1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - Initial contribution |
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11 * |
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12 * Contributors: |
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13 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * MPEG-4 bitstream parsing. |
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17 * |
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18 */ |
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19 |
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20 |
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21 /* |
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22 * Includes |
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23 */ |
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24 |
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25 #include "h263dConfig.h" |
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26 #include "viddemux.h" |
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27 #include "vdxint.h" |
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28 #include "mpegcons.h" |
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29 #include "sync.h" |
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30 #include "vdcaic.h" |
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31 #include "zigzag.h" |
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32 #include "debug.h" |
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33 #include "biblin.h" |
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34 /* MVE */ |
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35 #include "MPEG4Transcoder.h" |
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36 // <-- |
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37 |
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38 /* |
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39 * Local function prototypes |
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40 */ |
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41 |
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42 /* Macroblock Layer */ |
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43 |
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44 static int vdxGetIntraDCSize(bibBuffer_t *inBuffer, int compnum, int *IntraDCSize, |
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45 int *bitErrorIndication); |
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46 |
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47 static int vdxGetRVLCIndex(u_int32 bits, u_int32 *index, int *length, int intra_luma, |
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48 int *bitErrorIndication); |
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49 |
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50 |
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51 /* |
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52 * Picture Layer Global Functions |
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53 */ |
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54 |
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55 |
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56 /* |
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57 * |
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58 * vdxGetVolHeader |
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59 * |
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60 * Parameters: |
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61 * inBuffer pointer to bit buffer instance |
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62 * header output parameters: VOL header |
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63 * bitErrorIndication non-zero if a bit error has been detected |
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64 * within the bits accessed in this function, |
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65 * see biterr.h for possible values |
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66 * |
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67 * Function: |
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68 * This function reads the VO and VOL header from inBuffer. |
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69 * |
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70 * Returns: |
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71 * VDX_OK the function was successful |
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72 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
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73 * occured |
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74 * VDX_ERR_BIB an error occured when accessing bit buffer |
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75 * VDX_ERR_NO_START_CODE if start code is not found |
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76 * VDX_ERR_NOT_SUPPORTED if VOL header |
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77 * |
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78 * |
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79 */ |
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80 |
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81 int vdxGetVolHeader( |
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82 bibBuffer_t *inBuffer, |
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83 vdxVolHeader_t *header, |
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84 int *bitErrorIndication, |
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85 int getInfo, int *aByteIndex, int *aBitIndex, CMPEG4Transcoder *hTranscoder) |
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86 { |
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87 int bitsGot, sncCode, fUseDefaultVBVParams = 0, num_bits; |
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88 int16 bibError = 0; |
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89 u_int32 bits; |
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90 |
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91 memset(header, 0, sizeof(vdxVolHeader_t)); |
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92 *bitErrorIndication = 0; |
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93 |
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94 /* if Visual Object Sequence Start Code is present */ |
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95 bits = bibShowBits(MP4_VOS_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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96 if (bits == MP4_VOS_START_CODE) { |
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97 |
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98 /* vos_start_code */ |
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99 bibFlushBits(MP4_VOS_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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100 |
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101 /* profile_and_level_indication (8 bits) */ |
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102 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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103 /* If fatal bit error occurred (lost segment/packet etc.) */ |
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104 /* |
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105 1: Simple Profile Level 1 (from ISO/IEC 14496-2:1999/FPDAM4 [N4350] July 2001) |
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106 2: Simple Profile Level 2 (from ISO/IEC 14496-2:1999/FPDAM4 [N4350] July 2001) |
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107 3: Simple Profile Level 3 (from ISO/IEC 14496-2:1999/FPDAM4 [N4350] July 2001) |
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108 8: Simple Profile Level 0 (from ISO/IEC 14496-2:1999/FPDAM4 [N5743] July 2003) |
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109 9: Simple Profile Level 0b (from ISO/IEC 14496-2:1999/FPDAM4 [N5743] July 2003) |
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110 */ |
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111 #if 0 |
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112 // Disabled since some clips have this set incorrectly, and this is not used for anything important. |
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113 // Only simple profile clips seem to be available so this should not cause any harm. |
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114 // Further, it is still checked in vedVolReader which is always used before editing. It is not checked only when creating thumbnails |
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115 |
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116 |
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117 if (bits != 1 && bits != 2 && bits != 3 && bits != 8 && bits != 9) { |
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118 /* this is not a supported simple profile stream */ |
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119 deb("vdxGetMPEGVolHeader: ERROR - This is not a supported simple profile stream\n"); |
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120 goto notSupported; |
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121 } |
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122 #endif |
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123 if (bits != 8 && bits != 9) |
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124 header->profile_level = (int) bits; |
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125 else |
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126 header->profile_level = 0; |
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127 |
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128 /* User data if available */ |
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129 bits = bibShowBits(32, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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130 if (bits == MP4_USER_DATA_START_CODE) |
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131 { |
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132 if (!header->user_data) { |
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133 header->user_data = (char *) malloc(MAX_USER_DATA_LENGTH); |
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134 header->user_data_length = 0; |
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135 } |
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136 |
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137 if (vdxGetUserData(inBuffer, header->user_data, &(header->user_data_length), bitErrorIndication) != VDX_OK) |
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138 /* also bibError will be handled in exitAfterBitError */ |
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139 goto exitAfterBitError; |
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140 } |
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141 } |
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142 |
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143 /* if Visual Object Start Code is present */ |
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144 bits = bibShowBits(MP4_VO_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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145 if (bits == MP4_VO_START_CODE) { |
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146 |
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147 /* visual_object_start_code */ |
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148 bibFlushBits(MP4_VO_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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149 |
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150 /* is_visual_object_identifier (1 bit) */ |
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151 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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152 if (bits) { |
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153 |
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154 /* visual_object_ver_id (4 bits) */ |
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155 bits = bibGetBits(4, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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156 if (bits != 1) { |
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157 /* this is not an MPEG-4 version 1 stream */ |
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158 deb("vdxGetMPEGVolHeader: ERROR - This is not an MPEG-4 version 1 stream\n"); |
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159 goto notSupported; |
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160 } |
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161 |
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162 /* visual_object_priority (3 bits) */ |
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163 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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164 header->vo_priority = (int) bits; |
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165 |
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166 } else { |
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167 header->vo_priority = 0; |
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168 } |
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169 |
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170 /* visual_object_type (4 bits) */ |
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171 bits = bibGetBits(4, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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172 if (bits != 1) { |
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173 /* this is not a video object */ |
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174 deb("vdxGetMPEGVolHeader: ERROR - This is not a video object\n"); |
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175 goto notSupported; |
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176 } |
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177 |
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178 /* is_video_signal_type (1 bit) */ |
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179 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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180 if (bits) { |
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181 |
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182 /* Note: The following fields in the bitstream give information about the |
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183 video signal type before encoding. These parameters don't influence the |
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184 decoding algorithm, but the composition at the output of the video decoder. |
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185 There is no normative requirement however to utilize this information |
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186 during composition, therefore until a way to utilize them is found in |
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187 MoViDe, these fields are just dummyly read, but not interpreted. |
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188 For interpretation see the MPEG-4 Visual standard */ |
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189 |
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190 /* video_format (3 bits) */ |
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191 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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192 header->video_format = (int) bits; |
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193 |
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194 /* video_range (1 bit) */ |
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195 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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196 header->video_range = (int) bits; |
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197 |
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198 /* colour_description (1 bit) */ |
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199 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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200 if (bits) { |
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201 |
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202 /* colour_primaries (8 bits) */ |
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203 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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204 header->colour_primaries = (int) bits; |
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205 |
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206 /* transfer_characteristics (8 bits) */ |
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207 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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208 header->transfer_characteristics = (int) bits; |
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209 |
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210 /* matrix_coefficients (8 bits) */ |
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211 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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212 header->matrix_coefficients = (int) bits; |
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213 } else { |
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214 |
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215 header->colour_primaries = 1; /* default: ITU-R BT.709 */ |
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216 header->transfer_characteristics = 1; /* default: ITU-R BT.709 */ |
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217 header->matrix_coefficients = 1; /* default: ITU-R BT.709 */ |
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218 } |
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219 |
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220 } else { |
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221 |
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222 /* default values */ |
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223 header->video_format = 5; /* Unspecified video format */ |
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224 header->video_range = 0; /* Y range 16-235 pixel values */ |
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225 header->colour_primaries = 1; /* ITU-R BT.709 */ |
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226 header->transfer_characteristics = 1; /* ITU-R BT.709 */ |
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227 header->matrix_coefficients = 1; /* ITU-R BT.709 */ |
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228 } |
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229 |
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230 /* check the next start code */ |
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231 sncCode = sncCheckMpegSync(inBuffer, 0, &bibError); |
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232 |
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233 /* If User data is available */ |
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234 if (sncCode == SNC_USERDATA) |
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235 { |
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236 if (!header->user_data) { |
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237 header->user_data = (char *) malloc(MAX_USER_DATA_LENGTH); |
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238 header->user_data_length = 0; |
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239 } |
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240 |
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241 if (vdxGetUserData(inBuffer, header->user_data, &(header->user_data_length), bitErrorIndication) != VDX_OK) |
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242 /* also bibError will be handled in exitAfterBitError */ |
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243 goto exitAfterBitError; |
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244 |
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245 } else if (sncCode != SNC_VID) { |
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246 |
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247 deb("vdxGetMPEGVolHeader: ERROR. No Start code after VO header\n"); |
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248 goto exitAfterBitError; |
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249 } |
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250 } |
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251 |
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252 /* if Video Object Start Code is present */ |
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253 bits = bibShowBits(MP4_VID_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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254 if (bits == MP4_VID_START_CODE) { |
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255 /* video_object_start_code */ |
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256 bibFlushBits(MP4_VID_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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257 |
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258 /* video_object_id */ |
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259 bits = bibGetBits(MP4_VID_ID_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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260 header->vo_id = (int) bits; |
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261 } |
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262 |
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263 /* MVE */ |
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264 /* dummy indication of the position before VOL start code, only for recoginition of shortheader */ |
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265 if (!getInfo) |
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266 { |
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267 hTranscoder->ErrorResilienceInfo(NULL, inBuffer->getIndex, inBuffer->bitIndex); |
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268 } |
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269 |
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270 /* vol_start_code */ |
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271 bits = bibShowBits(MP4_VOL_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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272 if(bits != MP4_VOL_START_CODE) |
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273 { |
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274 /* If H.263 PSC, this is a short header stream, i.e. H.263 baseline */ |
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275 if ( (bits >> 6) == 32 ) { |
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276 return VDX_OK; |
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277 } else { |
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278 deb("vdxGetMPEGVolHeader: ERROR - Bitstream does not start with MP4_VOL_START_CODE\n"); |
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279 goto exitAfterBitError; |
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280 } |
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281 } |
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282 |
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283 bibFlushBits(MP4_VOL_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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284 |
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285 /* vol_id */ |
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286 bits = bibGetBits(MP4_VOL_ID_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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287 header->vol_id = (int) bits; |
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288 |
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289 /* random_accessible_vol (1 bit) */ |
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290 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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291 header->random_accessible_vol = (u_char) bits; |
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292 |
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293 /* video_object_type_indication (8 bits) */ |
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294 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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295 if (bits != 1) { |
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296 /* this is not a simple video object stream */ |
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297 deb("vdxGetMPEGVolHeader: ERROR - This is not a simple video object stream\n"); |
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298 goto notSupported; |
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299 } |
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300 |
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301 /* is_object_layer_identifier (1 bit) */ |
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302 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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303 if (bits) { |
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304 /* video_object_layer_verid (4 bits) */ |
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305 bits = bibGetBits(4, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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306 if (bits != 1) { |
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307 /* this is not an MPEG-4 version 1 stream */ |
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308 deb("vdxGetMPEGVolHeader: ERROR - This is not an MPEG-4 version 1 stream\n"); |
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309 goto notSupported; |
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310 } |
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311 |
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312 /* video_object_layer_priority (3 bits) */ |
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313 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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314 header->vo_priority = (int) bits; |
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315 } |
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316 |
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317 /* aspect_ratio_info: `0010`- 12:11 (625-type for 4:3 picture) */ |
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318 bits = bibGetBits(4, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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319 header->pixel_aspect_ratio = (int) bits; |
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320 |
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321 /* extended par */ |
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322 if (bits == 15) { |
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323 /* par_width */ |
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324 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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325 /* par_height */ |
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326 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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327 } |
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328 |
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329 /* vol_control_parameters flag */ |
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330 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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331 if (bits) { |
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332 |
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333 /* chroma_format (2 bits) */ |
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334 bits = bibGetBits(2, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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335 if (bits != 1) { |
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336 goto exitAfterBitError; |
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337 } |
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338 |
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339 /* low_delay (1 bits) */ |
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340 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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341 |
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342 /* vbv_parameters (1 bits) */ |
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343 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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344 if (bits) { |
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345 |
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346 /* first_half_bitrate (15 bits) */ |
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347 bits = bibGetBits(15, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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348 header->bit_rate = (bits << 15); |
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349 |
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350 /* marker_bit */ |
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351 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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352 goto exitAfterBitError; |
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353 |
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354 /* latter_half_bitrate (15 bits) */ |
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355 bits = bibGetBits(15, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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356 header->bit_rate += bits; |
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357 header->bit_rate *= 400; |
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358 |
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359 /* marker_bit */ |
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360 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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361 goto exitAfterBitError; |
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362 |
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363 /* first_half_vbv_buffer_size (15 bits) */ |
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364 bits = bibGetBits(15, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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365 header->vbv_buffer_size = (bits << 3); |
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366 |
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367 /* marker_bit */ |
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368 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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369 goto exitAfterBitError; |
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370 |
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371 /* latter_half_vbv_buffer_size (3 bits) */ |
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372 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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373 header->vbv_buffer_size += bits; |
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374 header->vbv_buffer_size <<= 14 /**= 16384*/; |
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375 |
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376 /* first_half_vbv_occupancy (11 bits) */ |
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377 bits = bibGetBits(11, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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378 header->vbv_occupancy = (bits << 15); |
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379 |
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380 /* marker_bit */ |
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381 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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382 goto exitAfterBitError; |
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383 |
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384 /* latter_half_vbv_occupancy (15 bits) */ |
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385 bits = bibGetBits(15, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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386 header->vbv_occupancy += bits; |
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387 header->vbv_occupancy <<= 6 /**= 64*/; |
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388 |
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389 /* marker_bit */ |
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390 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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391 goto exitAfterBitError; |
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392 |
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393 } else { |
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394 fUseDefaultVBVParams = 1; |
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395 } |
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396 } else { |
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397 fUseDefaultVBVParams = 1; |
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398 } |
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399 |
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400 if (fUseDefaultVBVParams) { |
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401 |
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402 /* default values */ |
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403 header->vbv_buffer_size = |
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404 ((header->profile_level == 0 || header->profile_level == 1) ? 5 : 20); |
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405 header->vbv_occupancy = header->vbv_buffer_size*170; |
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406 header->bit_rate = |
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407 ((header->profile_level == 0 || header->profile_level == 1) ? 64 : |
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408 ((header->profile_level == 2) ? 128 : 384)); |
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409 |
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410 header->vbv_occupancy <<= 6 /**= 64*/; |
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411 header->vbv_buffer_size <<= 14 /**= 16384*/; |
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412 header->bit_rate <<= 10 /**= 1024*/; |
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413 } |
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414 |
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415 /* vol_shape (2 bits) */ |
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416 bits = bibGetBits(2, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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417 /* rectangular_shape = '00' */ |
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418 if (bits != 0) { |
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419 deb("vdxGetMPEGVolHeader: ERROR - Not rectangular shape is not supported\n"); |
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420 goto notSupported; |
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421 } |
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422 |
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423 /* marker_bit */ |
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424 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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425 goto exitAfterBitError; |
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426 |
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427 /* MVE */ |
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428 if (!getInfo) |
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429 { |
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430 hTranscoder->MPEG4TimerResolution(inBuffer->getIndex, inBuffer->bitIndex); |
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431 } |
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432 |
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433 /* time_increment_resolution */ |
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434 bits = bibGetBits(16, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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435 header->time_increment_resolution = (int) bits; |
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436 |
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437 /* marker_bit */ |
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438 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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439 goto exitAfterBitError; |
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440 |
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441 /* fixed_vop_rate */ |
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442 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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443 |
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444 /* MVE */ |
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445 header->fixed_vop_rate = (u_char)bits; |
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446 |
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447 /* fixed_vop_time_increment (1-15 bits) */ |
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448 if (bits) { |
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449 for (num_bits = 1; ((header->time_increment_resolution-1) >> num_bits) != 0; num_bits++) |
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450 { |
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451 } |
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452 |
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453 bits = bibGetBits(num_bits, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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454 } |
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455 |
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456 /* if rectangular_shape !always! */ |
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457 |
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458 /* marker_bit */ |
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459 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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460 goto exitAfterBitError; |
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461 |
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462 /* vol_width (13 bits) */ |
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463 bits = bibGetBits(13, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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464 header->lumWidth = (int) bits; |
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465 |
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466 /* marker_bit */ |
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467 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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468 goto exitAfterBitError; |
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469 |
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470 /* vol_height (13 bits) */ |
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471 bits = bibGetBits(13, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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472 header->lumHeight = (int) bits; |
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473 |
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474 /* endif rectangular_shape */ |
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475 |
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476 /* marker_bit */ |
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477 if (!bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError)) |
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478 goto exitAfterBitError; |
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479 |
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480 /* interlaced (1 bit) */ |
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481 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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482 if (bits) |
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483 { |
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484 deb("vdxGetMPEGVolHeader: ERROR - Interlaced VOP not supported\n"); |
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485 goto notSupported; |
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486 } |
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487 |
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488 /* OBMC_disable */ |
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489 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
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490 if (!bits) { |
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491 deb("vdxGetMPEGVolHeader: ERROR - Overlapped motion compensation not supported\n"); |
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492 goto notSupported; |
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493 } |
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494 |
|
495 /* sprite_enable (1 bit) */ |
|
496 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
497 if (bits) { |
|
498 deb("vdxGetMPEGVolHeader: ERROR - Sprites not supported\n"); |
|
499 goto notSupported; |
|
500 } |
|
501 |
|
502 /* not_8_bit (1 bit) */ |
|
503 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
504 if (bits) { |
|
505 deb("vdxGetMPEGVolHeader: ERROR - Not 8 bits/pixel not supported\n"); |
|
506 goto notSupported; |
|
507 } |
|
508 |
|
509 /* quant_type (1 bit) */ |
|
510 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
511 if (bits) { |
|
512 deb("vdxGetMPEGVolHeader: ERROR - H.263/MPEG-2 Quant Table switch not supported\n"); |
|
513 goto notSupported; |
|
514 } |
|
515 |
|
516 /* complexity_estimation_disable (1 bit) */ |
|
517 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
518 if (!bits) { |
|
519 deb("vdxGetMPEGVolHeader: ERROR - Complexity estimation header not supported\n"); |
|
520 goto notSupported; |
|
521 } |
|
522 |
|
523 /* MVE */ |
|
524 if (!getInfo) |
|
525 { |
|
526 hTranscoder->ErrorResilienceInfo(NULL, inBuffer->getIndex, inBuffer->bitIndex); |
|
527 } |
|
528 else |
|
529 { |
|
530 *aByteIndex = inBuffer->getIndex; |
|
531 *aBitIndex = inBuffer->bitIndex; |
|
532 } |
|
533 |
|
534 /* resync_marker_disable (1 bit) */ |
|
535 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
536 header->error_res_disable = (u_char) bits; |
|
537 |
|
538 /* data_partitioned (1 bit) */ |
|
539 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
540 header->data_partitioned = (u_char) bits; |
|
541 |
|
542 if (header->data_partitioned) { |
|
543 /* reversible_vlc (1 bit) */ |
|
544 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
545 header->reversible_vlc = (u_char) bits; |
|
546 } |
|
547 |
|
548 /* MVE */ |
|
549 if (!getInfo) |
|
550 { |
|
551 hTranscoder->ErrorResilienceInfo(header, 0, 0); |
|
552 } |
|
553 |
|
554 /* scalability (1 bit) */ |
|
555 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
556 if (bits) { |
|
557 deb("vdxGetMPEGVolHeader: ERROR - Scalability not supported\n"); |
|
558 goto notSupported; |
|
559 } |
|
560 |
|
561 /* check the next start code */ |
|
562 sncCode = sncCheckMpegSync(inBuffer, 0, &bibError); |
|
563 |
|
564 /* Removed since the VOL header may be followed by another header (H.245 & MPEG-4 signaling) |
|
565 and sncCheckMpegSync does not recognize VOS start code |
|
566 if (sncCode == SNC_NO_SYNC || bibError) |
|
567 { |
|
568 deb("vdxGetMPEGVolHeader: ERROR. No Start code after VOL header\n"); |
|
569 goto exitAfterBitError; |
|
570 } |
|
571 */ |
|
572 /* If User data is available */ |
|
573 if (sncCode == SNC_USERDATA && !bibError) |
|
574 { |
|
575 if (!header->user_data) { |
|
576 header->user_data = (char *) malloc(MAX_USER_DATA_LENGTH); |
|
577 header->user_data_length = 0; |
|
578 } |
|
579 |
|
580 if (vdxGetUserData(inBuffer, header->user_data, &(header->user_data_length), bitErrorIndication) != VDX_OK) |
|
581 /* also bibError will be handled in exitAfterBitError */ |
|
582 goto exitAfterBitError; |
|
583 } |
|
584 |
|
585 /* If no error in bit buffer functions */ |
|
586 if (!bibError) |
|
587 return VDX_OK; |
|
588 |
|
589 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
590 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
591 return VDX_OK_BUT_BIT_ERROR; |
|
592 } |
|
593 |
|
594 /* Else other error in bit buffer functions */ |
|
595 else |
|
596 return VDX_ERR_BIB; |
|
597 |
|
598 exitAfterBitError: |
|
599 if (bibError && bibError != ERR_BIB_NOT_ENOUGH_DATA) |
|
600 return VDX_ERR_BIB; |
|
601 |
|
602 return VDX_OK_BUT_BIT_ERROR; |
|
603 |
|
604 notSupported: |
|
605 return VDX_ERR_NOT_SUPPORTED; |
|
606 } |
|
607 |
|
608 /* {{-output"vdxGetGovHeader.txt"}} */ |
|
609 /* |
|
610 * |
|
611 * vdxGetGovHeader |
|
612 * |
|
613 * Parameters: |
|
614 * inBuffer pointer to bit buffer instance |
|
615 * header output parameters: picture header |
|
616 * bitErrorIndication non-zero if a bit error has been detected |
|
617 * within the bits accessed in this function, |
|
618 * see biterr.h for possible values |
|
619 * |
|
620 * Function: |
|
621 * This function reads the GOV header from inBuffer. |
|
622 * |
|
623 * Returns: |
|
624 * VDX_OK the function was successful |
|
625 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
626 * occured |
|
627 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
628 * VDX_ERR_NO_START_CODE if start code is not found |
|
629 * VDX_ERR_NOT_SUPPORTED if broken_link and closed_gov conflict |
|
630 * |
|
631 */ |
|
632 |
|
633 int vdxGetGovHeader( |
|
634 bibBuffer_t *inBuffer, |
|
635 vdxGovHeader_t *header, |
|
636 int *bitErrorIndication) |
|
637 /* {{-output"vdxGetGovHeader.txt"}} */ |
|
638 { |
|
639 int tmpvar; |
|
640 u_int32 bits; |
|
641 int time_s; |
|
642 int bitsGot, sncCode; |
|
643 int16 bibError = 0; |
|
644 |
|
645 vdxAssert(inBuffer != NULL); |
|
646 vdxAssert(header != NULL); |
|
647 vdxAssert(bitErrorIndication != NULL); |
|
648 |
|
649 memset(header, 0, sizeof(vdxGovHeader_t)); |
|
650 *bitErrorIndication = 0; |
|
651 |
|
652 /* group_start_code (32 bits) */ |
|
653 bits = bibGetBits(32, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
654 |
|
655 if ( bibError ) |
|
656 goto exitAfterBitError; |
|
657 if( bits != MP4_GROUP_START_CODE ) |
|
658 { |
|
659 deb0p("ERROR. Bitstream does not start with MP4_GROUP_START_CODE\n"); |
|
660 goto exitAfterBitError; |
|
661 } |
|
662 |
|
663 /* time_code_hours (5 bits) */ |
|
664 tmpvar = (int) bibGetBits(5, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
665 |
|
666 if ( bibError ) |
|
667 goto exitAfterBitError; |
|
668 |
|
669 time_s= tmpvar*3600; |
|
670 |
|
671 /* time_code_minutes (6 bits) */ |
|
672 tmpvar = (int) bibGetBits(6, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
673 |
|
674 if ( bibError ) |
|
675 goto exitAfterBitError; |
|
676 |
|
677 time_s += tmpvar*60; |
|
678 |
|
679 /* marker_bit (1 bit) */ |
|
680 tmpvar = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
681 if ( bibError ) |
|
682 goto exitAfterBitError; |
|
683 if ( !tmpvar ) |
|
684 goto exitAfterBitError; |
|
685 |
|
686 /* time_code_seconds (6 bits) */ |
|
687 tmpvar = (int) bibGetBits(6, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
688 |
|
689 time_s += tmpvar; |
|
690 |
|
691 /* closed_gov (1 bit) */ |
|
692 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
693 if ( bibError ) |
|
694 goto exitAfterBitError; |
|
695 |
|
696 header->closed_gov= (u_char) bits; |
|
697 |
|
698 /* broken_link (1 bit) */ |
|
699 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
700 if ( bibError ) |
|
701 goto exitAfterBitError; |
|
702 |
|
703 header->broken_link = (u_char) bits; |
|
704 |
|
705 if ( (header->closed_gov == 0)&&(header->broken_link == 1) ) |
|
706 { |
|
707 deb0p("ERROR. GOVHeader: closed_gov = 0\tbroken_link = 1\n"); |
|
708 goto exitAfterBitError; |
|
709 } |
|
710 |
|
711 /* Stuff the bits before the next start code */ |
|
712 sncCode = sncCheckMpegSync(inBuffer, 1, &bibError); |
|
713 if ((sncCode == SNC_NO_SYNC) || bibError) |
|
714 { |
|
715 deb0p("ERROR. No VOP Start code after GOV header\n"); |
|
716 /* also bibError will be handled in exitAfterBitError */ |
|
717 goto exitAfterBitError; |
|
718 } |
|
719 |
|
720 /* If User data is available */ |
|
721 if (sncCode == SNC_USERDATA) |
|
722 { |
|
723 if (!header->user_data) { |
|
724 header->user_data = (char *) malloc(MAX_USER_DATA_LENGTH); |
|
725 header->user_data_length = 0; |
|
726 } |
|
727 |
|
728 if (vdxGetUserData(inBuffer, header->user_data, &(header->user_data_length), bitErrorIndication) != VDX_OK) |
|
729 /* also bibError will be handled in exitAfterBitError */ |
|
730 goto exitAfterBitError; |
|
731 } |
|
732 |
|
733 header->time_stamp = time_s; |
|
734 |
|
735 /* If no error in bit buffer functions */ |
|
736 if (!bibError) |
|
737 return VDX_OK; |
|
738 |
|
739 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
740 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
741 return VDX_OK_BUT_BIT_ERROR; |
|
742 } |
|
743 |
|
744 /* Else other error in bit buffer functions */ |
|
745 else |
|
746 return VDX_ERR_BIB; |
|
747 |
|
748 exitAfterBitError: |
|
749 if (bibError && bibError != ERR_BIB_NOT_ENOUGH_DATA) |
|
750 return VDX_ERR_BIB; |
|
751 |
|
752 return VDX_OK_BUT_BIT_ERROR; |
|
753 |
|
754 } |
|
755 |
|
756 /* {{-output"vdxGetVopHeader.txt"}} */ |
|
757 /* |
|
758 * |
|
759 * vdxGetVopHeader |
|
760 * |
|
761 * Parameters: |
|
762 * inBuffer pointer to bit buffer instance |
|
763 * inParam input parameters |
|
764 * header output parameters: picture header |
|
765 * bitErrorIndication non-zero if a bit error has been detected |
|
766 * within the bits accessed in this function, |
|
767 * see biterr.h for possible values |
|
768 * |
|
769 * Function: |
|
770 * This function reads the VOP header from inBuffer. |
|
771 * |
|
772 * Returns: |
|
773 * VDX_OK the function was successful |
|
774 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
775 * occured |
|
776 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
777 * VDX_ERR_NO_START_CODE if start code is not found |
|
778 * VDX_ERR_NOT_SUPPORTED if broken_link and closed_gov conflict |
|
779 * |
|
780 * |
|
781 */ |
|
782 |
|
783 int vdxGetVopHeader( |
|
784 bibBuffer_t *inBuffer, |
|
785 const vdxGetVopHeaderInputParam_t *inpParam, |
|
786 vdxVopHeader_t *header, |
|
787 int * ModuloByteIndex, |
|
788 int * ModuloBitIndex, |
|
789 int * ByteIndex, |
|
790 int * BitIndex, |
|
791 int *bitErrorIndication) |
|
792 /* {{-output"vdxGetVopHeader.txt"}} */ |
|
793 { |
|
794 |
|
795 int tmpvar; |
|
796 u_int32 bits; |
|
797 int bitsGot; |
|
798 int time_base_incr = 0, |
|
799 num_bits; |
|
800 int16 |
|
801 bibError = 0; |
|
802 |
|
803 vdxAssert(inBuffer != NULL); |
|
804 vdxAssert(header != NULL); |
|
805 vdxAssert(bitErrorIndication != NULL); |
|
806 |
|
807 memset(header, 0, sizeof(vdxVopHeader_t)); |
|
808 *bitErrorIndication = 0; |
|
809 |
|
810 /* vop_start_code (32 bits) */ |
|
811 bits = bibGetBits(MP4_VOP_START_CODE_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
812 if ( bibError ) |
|
813 goto exitFunction; |
|
814 |
|
815 if( bits != MP4_VOP_START_CODE ) |
|
816 { |
|
817 deb0p("ERROR. Bitstream does not start with MP4_VOP_START_CODE\n"); |
|
818 goto exitAfterBitError; |
|
819 } |
|
820 |
|
821 *bitErrorIndication = 0; |
|
822 |
|
823 /* vop_prediction_type (2 bits) */ |
|
824 bits = bibGetBits(2, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
825 if ( bibError ) |
|
826 goto exitAfterBitError; |
|
827 |
|
828 if ( (bits != VDX_VOP_TYPE_P && bits != VDX_VOP_TYPE_I) ) |
|
829 { |
|
830 deb("ERROR. Not supported VOP prediction type\n"); |
|
831 goto exitAfterBitError; |
|
832 } |
|
833 |
|
834 header->coding_type = (u_char) bits; |
|
835 |
|
836 /* MVE */ |
|
837 *ModuloByteIndex = inBuffer->numBytesRead; |
|
838 *ModuloBitIndex = inBuffer->bitIndex; |
|
839 |
|
840 /* modulo_time_base (? bits) */ |
|
841 tmpvar = (int) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
842 if ( bibError ) |
|
843 goto exitAfterBitError; |
|
844 |
|
845 while( tmpvar == 1 && !bibError ) |
|
846 { |
|
847 tmpvar = (int) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
848 time_base_incr++; |
|
849 } |
|
850 if ( bibError ) |
|
851 goto exitAfterBitError; |
|
852 |
|
853 header->time_base_incr = time_base_incr; |
|
854 |
|
855 /* marker_bit (1 bit) */ |
|
856 tmpvar = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
857 if ( bibError ) |
|
858 goto exitAfterBitError; |
|
859 if ( !tmpvar ) |
|
860 goto exitAfterBitError; |
|
861 |
|
862 /* MVE */ |
|
863 *ByteIndex = inBuffer->numBytesRead; |
|
864 *BitIndex = inBuffer->bitIndex; |
|
865 |
|
866 /* vop_time_increment (1-16 bits) */ |
|
867 for (num_bits = 1; ((inpParam->time_increment_resolution-1) >> num_bits) != 0; num_bits++) |
|
868 { |
|
869 } |
|
870 |
|
871 tmpvar = (int) bibGetBits(num_bits, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
872 if ( bibError ) |
|
873 goto exitAfterBitError; |
|
874 |
|
875 header->time_inc = tmpvar; |
|
876 |
|
877 /* marker_bit (1 bit) */ |
|
878 tmpvar = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
879 if ( bibError ) |
|
880 goto exitAfterBitError; |
|
881 if ( !tmpvar ) |
|
882 goto exitAfterBitError; |
|
883 |
|
884 /* vop_coded (1 bit) */ |
|
885 header->vop_coded = (u_char) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
886 if ( bibError ) |
|
887 goto exitAfterBitError; |
|
888 |
|
889 if ( !header->vop_coded ) { |
|
890 goto exitAfterBitError; |
|
891 } |
|
892 |
|
893 /* vop_rounding_type (1 bit) */ |
|
894 if (header->coding_type == VDX_VOP_TYPE_P) |
|
895 { |
|
896 bits = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
897 if ( bibError ) |
|
898 goto exitAfterBitError; |
|
899 header->rounding_type = (int) bits; |
|
900 } else |
|
901 header->rounding_type = 0; |
|
902 |
|
903 /* intra_dc_vlc_thr (3 bits) */ |
|
904 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
905 if ( bibError ) |
|
906 goto exitAfterBitError; |
|
907 |
|
908 header->intra_dc_vlc_thr = (int) bits; |
|
909 |
|
910 /* vop_quant (5 bits) */ |
|
911 bits = bibGetBits(5, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
912 if ( bibError ) |
|
913 goto exitAfterBitError; |
|
914 |
|
915 header->quant = (int) bits; |
|
916 |
|
917 /* vop_fcode_forward (3 bits) */ |
|
918 if (header->coding_type == VDX_VOP_TYPE_P) |
|
919 { |
|
920 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
921 if ( bibError ) |
|
922 goto exitAfterBitError; |
|
923 header->fcode_forward = (int) bits; |
|
924 } else { |
|
925 /* In case of an Intra Frame to calculate the length of the |
|
926 VP resynchronization marker later on fcode_forward should be |
|
927 assumed to have the value 1. */ |
|
928 header->fcode_forward = 1; |
|
929 } |
|
930 |
|
931 exitFunction: |
|
932 |
|
933 /* If no error in bit buffer functions */ |
|
934 if (!bibError) |
|
935 return VDX_OK; |
|
936 |
|
937 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
938 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
939 return VDX_OK_BUT_BIT_ERROR; |
|
940 } |
|
941 |
|
942 /* Else other error in bit buffer functions */ |
|
943 else |
|
944 return VDX_ERR_BIB; |
|
945 |
|
946 exitAfterBitError: |
|
947 |
|
948 if (bibError && bibError != ERR_BIB_NOT_ENOUGH_DATA) |
|
949 return VDX_ERR_BIB; |
|
950 |
|
951 return VDX_OK_BUT_BIT_ERROR; |
|
952 |
|
953 } |
|
954 |
|
955 /* |
|
956 * vdxGetUserData |
|
957 * |
|
958 * |
|
959 * Parameters: |
|
960 * inBuffer pointer to bit buffer instance |
|
961 * user_data string of user data read byte-by-byte from |
|
962 * the stream |
|
963 * user_data_length number of bytes of user data |
|
964 * bitErrorIndication non-zero if a bit error has been detected |
|
965 * within the bits accessed in this function, |
|
966 * see biterr.h for possible values |
|
967 * |
|
968 * Function: |
|
969 * This function reads a string of bytes as user data from the bitsream |
|
970 * It is called from te VOL header or GOV header |
|
971 * |
|
972 * Returns: |
|
973 * VDX_OK the function was successful |
|
974 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
975 * occured |
|
976 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
977 * |
|
978 * |
|
979 */ |
|
980 int vdxGetUserData(bibBuffer_t *inBuffer, |
|
981 char *user_data, int *user_data_length, |
|
982 int *bitErrorIndication) |
|
983 { |
|
984 int i; |
|
985 u_int32 bits; |
|
986 int bitsGot; |
|
987 int16 ownError=0; |
|
988 |
|
989 /* user_data_start_code (32 bits) */ |
|
990 bits = bibGetBits(32, inBuffer, &bitsGot, bitErrorIndication, &ownError); |
|
991 if ( ownError ) |
|
992 goto exitFunction; |
|
993 |
|
994 if (bits != MP4_USER_DATA_START_CODE) |
|
995 { |
|
996 deb0p("ERROR. Bitstream does not start with MP4_USER_DATA_START_CODE\n"); |
|
997 goto exitFunction; |
|
998 } |
|
999 |
|
1000 /* read until start_code 0x000001 */ |
|
1001 for ( i=(*user_data_length); |
|
1002 (((bits = bibShowBits(24, inBuffer, &bitsGot, bitErrorIndication, &ownError)) != 0x000001)&&(ownError==0)); |
|
1003 i++ ) |
|
1004 { |
|
1005 bits = bibGetBits(8, inBuffer, &bitsGot, bitErrorIndication, &ownError); |
|
1006 if (ownError) |
|
1007 goto exitFunction; |
|
1008 |
|
1009 if (i<MAX_USER_DATA_LENGTH) |
|
1010 { |
|
1011 user_data[i] = (u_char) bits; |
|
1012 } |
|
1013 else |
|
1014 { |
|
1015 break; |
|
1016 } |
|
1017 } |
|
1018 |
|
1019 |
|
1020 *user_data_length = (i>=MAX_USER_DATA_LENGTH) ? MAX_USER_DATA_LENGTH : i++; |
|
1021 |
|
1022 exitFunction: |
|
1023 |
|
1024 /* If no error in bit buffer functions */ |
|
1025 if (!ownError) |
|
1026 return VDX_OK; |
|
1027 |
|
1028 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
1029 else if (ownError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
1030 return VDX_OK_BUT_BIT_ERROR; |
|
1031 } |
|
1032 |
|
1033 /* Else other error in bit buffer functions */ |
|
1034 else |
|
1035 return VDX_ERR_BIB; |
|
1036 |
|
1037 } |
|
1038 |
|
1039 /* |
|
1040 * Video Packet Layer Global Functions |
|
1041 */ |
|
1042 |
|
1043 /* {{-output"vdxGetVideoPacketHeader.txt"}} */ |
|
1044 /* |
|
1045 * |
|
1046 * vdxGetVideoPacketHeader |
|
1047 * |
|
1048 * Parameters: |
|
1049 * inBuffer pointer to bit buffer instance |
|
1050 * header output parameters: picture header |
|
1051 * bitErrorIndication non-zero if a bit error has been detected |
|
1052 * within the bits accessed in this function, |
|
1053 * see biterr.h for possible values |
|
1054 * |
|
1055 * Function: |
|
1056 * This function reads the Video Packet header from inBuffer. |
|
1057 * |
|
1058 * Returns: |
|
1059 * VDX_OK the function was successful |
|
1060 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
1061 * occured |
|
1062 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
1063 * VDX_ERR_NO_START_CODE if start code is not found |
|
1064 * VDX_ERR_NOT_SUPPORTED if broken_link and closed_gov conflict |
|
1065 * |
|
1066 * |
|
1067 */ |
|
1068 |
|
1069 int vdxGetVideoPacketHeader( |
|
1070 bibBuffer_t *inBuffer, |
|
1071 const vdxGetVideoPacketHeaderInputParam_t *inpParam, |
|
1072 vdxVideoPacketHeader_t *header, |
|
1073 int *bitErrorIndication) |
|
1074 /* {{-output"vdxGetVideoPacketHeader.txt"}} */ |
|
1075 { |
|
1076 int tmpvar, num_bits, bitsGot; |
|
1077 u_int32 bits; |
|
1078 int MBNumLength, |
|
1079 time_base_incr = 0; |
|
1080 int16 |
|
1081 bibError = 0; |
|
1082 |
|
1083 vdxAssert(inBuffer != NULL); |
|
1084 vdxAssert(header != NULL); |
|
1085 vdxAssert(bitErrorIndication != NULL); |
|
1086 |
|
1087 memset(header, 0, sizeof(vdxVideoPacketHeader_t)); |
|
1088 *bitErrorIndication = 0; |
|
1089 |
|
1090 /* resync marker */ |
|
1091 tmpvar = bibGetBits(16 + inpParam->fcode_forward, inBuffer, &bitsGot, |
|
1092 bitErrorIndication, &bibError); |
|
1093 if ( bibError ) |
|
1094 goto exitAfterBitError; |
|
1095 if ( (int) tmpvar != MP4_RESYNC_MARKER ) |
|
1096 { |
|
1097 deb("ERROR. No Resync Marker found\n"); |
|
1098 goto exitAfterBitError; |
|
1099 } |
|
1100 |
|
1101 /* Macroblock Number */ |
|
1102 for (MBNumLength = 1; ((inpParam->numOfMBs-1) >> MBNumLength) != 0; MBNumLength++) |
|
1103 { |
|
1104 } |
|
1105 |
|
1106 header->currMBNum = (int) bibGetBits(MBNumLength, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1107 if ( bibError ) |
|
1108 goto exitAfterBitError; |
|
1109 |
|
1110 /* quant_scale (5 bits) */ |
|
1111 bits = bibGetBits(5, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1112 if ( bibError ) |
|
1113 goto exitAfterBitError; |
|
1114 |
|
1115 header->quant = (int) bits; |
|
1116 |
|
1117 /* header_extension_code (1 bit) */ |
|
1118 header->fHEC = (u_char) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1119 if ( bibError ) |
|
1120 goto exitAfterBitError; |
|
1121 |
|
1122 if(header->fHEC) { |
|
1123 /* modulo_time_base (? bits) */ |
|
1124 tmpvar = (int) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1125 if ( bibError ) |
|
1126 goto exitAfterBitError; |
|
1127 |
|
1128 while (tmpvar == 1 && !bibError) |
|
1129 { |
|
1130 tmpvar = (int) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1131 time_base_incr++; |
|
1132 } |
|
1133 if ( bibError ) |
|
1134 goto exitAfterBitError; |
|
1135 |
|
1136 header->time_base_incr = time_base_incr; |
|
1137 |
|
1138 /* marker_bit (1 bit) */ |
|
1139 tmpvar = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1140 if ( bibError ) |
|
1141 goto exitAfterBitError; |
|
1142 if ( !tmpvar ) |
|
1143 goto exitAfterBitError; |
|
1144 |
|
1145 /* vop_time_increment (1-15 bits) */ |
|
1146 for (num_bits = 1; ((inpParam->time_increment_resolution-1) >> num_bits) != 0; num_bits++) |
|
1147 { |
|
1148 } |
|
1149 |
|
1150 tmpvar = (int) bibGetBits(num_bits, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1151 if ( bibError ) |
|
1152 goto exitAfterBitError; |
|
1153 |
|
1154 header->time_inc = tmpvar; |
|
1155 |
|
1156 /* marker_bit (1 bit) */ |
|
1157 tmpvar = bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1158 if ( bibError ) |
|
1159 goto exitAfterBitError; |
|
1160 if (!tmpvar) |
|
1161 goto exitAfterBitError; |
|
1162 |
|
1163 /* vop_prediction_type (2 bits) */ |
|
1164 bits = bibGetBits(2, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1165 if ( bibError ) |
|
1166 goto exitAfterBitError; |
|
1167 |
|
1168 if ((bits != VDX_VOP_TYPE_P && bits != VDX_VOP_TYPE_I)) |
|
1169 { |
|
1170 deb("ERROR. Not supported VOP prediction type\n"); |
|
1171 goto exitAfterBitError; |
|
1172 } |
|
1173 |
|
1174 header->coding_type = (u_char) bits; |
|
1175 |
|
1176 /* intra_dc_vlc_thr (3 bits) */ |
|
1177 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1178 if ( bibError ) |
|
1179 goto exitAfterBitError; |
|
1180 |
|
1181 header->intra_dc_vlc_thr = (int) bits; |
|
1182 |
|
1183 /* vop_fcode_forward (3 bits) */ |
|
1184 if (header->coding_type == VDX_VOP_TYPE_P) |
|
1185 { |
|
1186 bits = bibGetBits(3, inBuffer, &bitsGot, bitErrorIndication, &bibError); |
|
1187 if ( bibError ) |
|
1188 goto exitAfterBitError; |
|
1189 header->fcode_forward = (int) bits; |
|
1190 } else |
|
1191 header->fcode_forward = 1; |
|
1192 } |
|
1193 |
|
1194 /* Check success and return */ |
|
1195 |
|
1196 /* If no error in bit buffer functions */ |
|
1197 if (!bibError) |
|
1198 return VDX_OK; |
|
1199 |
|
1200 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
1201 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
1202 return VDX_OK_BUT_BIT_ERROR; |
|
1203 } |
|
1204 |
|
1205 /* Else other error in bit buffer functions */ |
|
1206 else |
|
1207 return VDX_ERR_BIB; |
|
1208 |
|
1209 exitAfterBitError: |
|
1210 if (bibError && bibError != ERR_BIB_NOT_ENOUGH_DATA) |
|
1211 return VDX_ERR_BIB; |
|
1212 |
|
1213 return VDX_OK_BUT_BIT_ERROR; |
|
1214 } |
|
1215 |
|
1216 /* |
|
1217 * Macroblock Layer Global Functions |
|
1218 */ |
|
1219 |
|
1220 /* |
|
1221 * |
|
1222 * vdxGetDataPartitionedIMBLayer_Part1 |
|
1223 * |
|
1224 * Parameters: |
|
1225 * inBuffer input buffer |
|
1226 * inpParam input parameters |
|
1227 * MBList a double-linked list for soring |
|
1228 * MB parameters + DC values in the VP |
|
1229 * bitErrorIndication |
|
1230 * non-zero if a bit error has been detected |
|
1231 * within the bits accessed in this function, |
|
1232 * see biterr.h for possible values |
|
1233 * |
|
1234 * Function: |
|
1235 * This function gets the first (DC) partition of a data |
|
1236 * partitioned encoded Video Packet in an Intra-VOP. |
|
1237 * The parameters MCBPC, DQUANT and DC values of all the MBs |
|
1238 * in the VP are read and stored in the linked list. |
|
1239 * |
|
1240 * Returns: |
|
1241 * VDX_OK the function was successful |
|
1242 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
1243 * occured |
|
1244 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
1245 * |
|
1246 * Error codes: |
|
1247 * error codes returned by bibFlushBits/bibGetBits/bibShowBits |
|
1248 * |
|
1249 * |
|
1250 */ |
|
1251 |
|
1252 int vdxGetDataPartitionedIMBLayer_Part1( |
|
1253 bibBuffer_t *inBuffer, bibBuffer_t *outBuffer, bibBufferEdit_t *bufEdit, |
|
1254 int aColorEffect, int *aStartByteIndex, int *aStartBitIndex, |
|
1255 CMPEG4Transcoder *hTranscoder, |
|
1256 const vdxGetDataPartitionedIMBLayerInputParam_t *inpParam, |
|
1257 dlst_t *MBList, |
|
1258 int *bitErrorIndication) |
|
1259 { |
|
1260 |
|
1261 int mcbpcIndex, |
|
1262 retValue = VDX_OK, |
|
1263 fDQUANT, |
|
1264 new_quant, previous_quant, |
|
1265 bitsGot, |
|
1266 i, |
|
1267 IntraDC_size, |
|
1268 IntraDC_delta; |
|
1269 |
|
1270 /* MVE */ |
|
1271 int StartByteIndex; |
|
1272 int StartBitIndex; |
|
1273 |
|
1274 int16 error=0; |
|
1275 vdxIMBListItem_t *MBinstance = NULL; |
|
1276 |
|
1277 |
|
1278 vdxAssert(inpParam != NULL); |
|
1279 vdxAssert(inBuffer != NULL); |
|
1280 vdxAssert(bitErrorIndication != NULL); |
|
1281 |
|
1282 previous_quant = inpParam->quant; |
|
1283 |
|
1284 /* MVE */ |
|
1285 int stuffingStartByteIndex, stuffingStartBitIndex, stuffingEndByteIndex, stuffingEndBitIndex; |
|
1286 stuffingStartByteIndex = stuffingEndByteIndex = inBuffer->getIndex; |
|
1287 stuffingStartBitIndex = stuffingEndBitIndex = inBuffer->bitIndex; |
|
1288 |
|
1289 while (bibShowBits(MP4_DC_MARKER_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &error) != MP4_DC_MARKER && !error) |
|
1290 { |
|
1291 /* MVE */ |
|
1292 StartByteIndex = inBuffer->getIndex; |
|
1293 StartBitIndex = inBuffer->bitIndex; |
|
1294 |
|
1295 retValue = vdxGetMCBPCIntra(inBuffer, &mcbpcIndex, bitErrorIndication); |
|
1296 if (retValue != VDX_OK) |
|
1297 goto exitFunction; |
|
1298 |
|
1299 if (mcbpcIndex == 8) |
|
1300 { |
|
1301 /* MVE */ |
|
1302 stuffingEndByteIndex = inBuffer->getIndex; |
|
1303 stuffingEndBitIndex = inBuffer->bitIndex; |
|
1304 |
|
1305 continue; /* skip stuffing */ |
|
1306 } |
|
1307 |
|
1308 /* Create new MBInstance for the next MB */ |
|
1309 MBinstance = (vdxIMBListItem_t *) malloc(sizeof(vdxIMBListItem_t)); |
|
1310 if (!MBinstance) |
|
1311 { |
|
1312 deb("ERROR - MBinstance creation failed\n"); |
|
1313 retValue = H263D_ERROR; |
|
1314 goto exitFunction; |
|
1315 } |
|
1316 memset(MBinstance, 0, sizeof(vdxIMBListItem_t)); |
|
1317 |
|
1318 /* CBPC (2 LSBs of MCBPC) */ |
|
1319 MBinstance->cbpc = mcbpcIndex & 3; |
|
1320 |
|
1321 /* MVE */ |
|
1322 MBinstance->mcbpc = mcbpcIndex; |
|
1323 VDT_SET_START_POSITION(MBinstance,11,stuffingStartByteIndex,stuffingStartBitIndex); // 11: MB stuffing bits |
|
1324 VDT_SET_END_POSITION(MBinstance,11,stuffingEndByteIndex,stuffingEndBitIndex); // 11: MB stuffing bits |
|
1325 |
|
1326 VDT_SET_START_POSITION(MBinstance,0,StartByteIndex,StartBitIndex); // 0: mcbpc |
|
1327 VDT_SET_END_POSITION(MBinstance,0,inBuffer->getIndex,inBuffer->bitIndex); // 0: mcbpc |
|
1328 VDT_SET_START_POSITION(MBinstance,1,inBuffer->getIndex,inBuffer->bitIndex); // 1: dquant |
|
1329 |
|
1330 /* DQUANT is given for MCBPC indexes 4..7 */ |
|
1331 fDQUANT = mcbpcIndex & 4; |
|
1332 |
|
1333 if (fDQUANT) { |
|
1334 retValue = vdxUpdateQuant(inBuffer, 0, previous_quant, |
|
1335 &new_quant, bitErrorIndication); |
|
1336 if (retValue != VDX_OK) |
|
1337 goto exitFunction; |
|
1338 } |
|
1339 /* Else no DQUANT */ |
|
1340 else |
|
1341 new_quant = previous_quant; |
|
1342 |
|
1343 MBinstance->dquant = fDQUANT ? new_quant - previous_quant : 0; |
|
1344 MBinstance->quant = previous_quant = new_quant; |
|
1345 |
|
1346 /* MVE */ |
|
1347 VDT_SET_END_POSITION(MBinstance,1,inBuffer->getIndex,inBuffer->bitIndex); // 1: dquant |
|
1348 VDT_SET_START_POSITION(MBinstance,4,inBuffer->getIndex,inBuffer->bitIndex); // 4: intraDC |
|
1349 VDT_SET_START_POSITION(MBinstance,5,inBuffer->getIndex,inBuffer->bitIndex); // 5: intraDC |
|
1350 VDT_SET_START_POSITION(MBinstance,6,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC |
|
1351 VDT_SET_START_POSITION(MBinstance,7,inBuffer->getIndex,inBuffer->bitIndex); // 7: intraDC |
|
1352 VDT_SET_START_POSITION(MBinstance,8,inBuffer->getIndex,inBuffer->bitIndex); // 8: intraDC |
|
1353 VDT_SET_START_POSITION(MBinstance,9,inBuffer->getIndex,inBuffer->bitIndex); // 9: intraDC |
|
1354 |
|
1355 VDT_SET_END_POSITION(MBinstance,4,inBuffer->getIndex,inBuffer->bitIndex); // 4: intraDC |
|
1356 VDT_SET_END_POSITION(MBinstance,5,inBuffer->getIndex,inBuffer->bitIndex); // 5: intraDC |
|
1357 VDT_SET_END_POSITION(MBinstance,6,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC |
|
1358 VDT_SET_END_POSITION(MBinstance,7,inBuffer->getIndex,inBuffer->bitIndex); // 7: intraDC |
|
1359 VDT_SET_END_POSITION(MBinstance,8,inBuffer->getIndex,inBuffer->bitIndex); // 8: intraDC |
|
1360 VDT_SET_END_POSITION(MBinstance,9,inBuffer->getIndex,inBuffer->bitIndex); // 9: intraDC |
|
1361 |
|
1362 /* Color Toning */ |
|
1363 hTranscoder->AfterMBLayer(new_quant); |
|
1364 |
|
1365 |
|
1366 MBinstance->switched = aicIntraDCSwitch(inpParam->intra_dc_vlc_thr,new_quant); |
|
1367 |
|
1368 /* Intra_DC_Coeffs */ |
|
1369 if(!MBinstance->switched) { |
|
1370 for (i=0; i<6; i++) { |
|
1371 |
|
1372 /* MVE */ |
|
1373 VDT_SET_START_POSITION(MBinstance,i+4,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC,chrominance |
|
1374 |
|
1375 retValue = vdxGetIntraDC(inBuffer, outBuffer, bufEdit, aColorEffect, aStartByteIndex, aStartBitIndex, |
|
1376 i, &IntraDC_size, &IntraDC_delta, bitErrorIndication); |
|
1377 |
|
1378 /* MVE */ |
|
1379 VDT_SET_END_POSITION(MBinstance,i+4,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC,chrominance |
|
1380 |
|
1381 if (retValue != VDX_OK) |
|
1382 goto exitFunction; |
|
1383 |
|
1384 MBinstance->DC[i] = IntraDC_delta; |
|
1385 } |
|
1386 } |
|
1387 |
|
1388 |
|
1389 /* Put MBinstance into the queue */ |
|
1390 dlstAddAfterCurr(MBList, MBinstance); |
|
1391 MBinstance = NULL; |
|
1392 |
|
1393 /* MVE */ |
|
1394 // begin another MB, record the position of MB stuffing |
|
1395 stuffingStartByteIndex = stuffingEndByteIndex = inBuffer->getIndex; |
|
1396 stuffingStartBitIndex = stuffingEndBitIndex = inBuffer->bitIndex; |
|
1397 |
|
1398 } |
|
1399 |
|
1400 exitFunction: |
|
1401 |
|
1402 if (MBinstance) |
|
1403 free(MBinstance); |
|
1404 |
|
1405 |
|
1406 /* If no error in bit buffer functions */ |
|
1407 if (!error) |
|
1408 return retValue; |
|
1409 |
|
1410 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
1411 else if (error == ERR_BIB_NOT_ENOUGH_DATA) { |
|
1412 return VDX_OK_BUT_BIT_ERROR; |
|
1413 } |
|
1414 |
|
1415 /* Else other error in bit buffer functions */ |
|
1416 else |
|
1417 return VDX_ERR_BIB; |
|
1418 } |
|
1419 |
|
1420 /* |
|
1421 * |
|
1422 * vdxGetDataPartitionedIMBLayer_Part2 |
|
1423 * |
|
1424 * Parameters: |
|
1425 * inBuffer input buffer |
|
1426 * MBList a double-linked list for soring |
|
1427 * MB parameters + DC values in the VP |
|
1428 * numMBsInVP number of MBs in this VP |
|
1429 * bitErrorIndication |
|
1430 * non-zero if a bit error has been detected |
|
1431 * within the bits accessed in this function, |
|
1432 * see biterr.h for possible values |
|
1433 * |
|
1434 * Function: |
|
1435 * This function gets the second (CBPY) partition of a data |
|
1436 * partitioned encoded Video Packet in an Intra-VOP. |
|
1437 * The parameters CBPY and ac_pred_flag of all the MBs |
|
1438 * in the VP are read and stored in the linked list. |
|
1439 * |
|
1440 * Returns: |
|
1441 * VDX_OK the function was successful |
|
1442 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
1443 * occured |
|
1444 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
1445 * |
|
1446 * Error codes: |
|
1447 * error codes returned by bibFlushBits/bibGetBits/bibShowBits |
|
1448 * |
|
1449 * |
|
1450 * |
|
1451 */ |
|
1452 |
|
1453 int vdxGetDataPartitionedIMBLayer_Part2( |
|
1454 bibBuffer_t *inBuffer, bibBuffer_t */*outBuffer*/, bibBufferEdit_t */*bufEdit*/, |
|
1455 int /*aColorEffect*/, int */*aStartByteIndex*/, int */*aStartBitIndex*/, |
|
1456 dlst_t *MBList, |
|
1457 int numMBsInVP, |
|
1458 int *bitErrorIndication) |
|
1459 { |
|
1460 |
|
1461 int cbpyIndex, |
|
1462 i, |
|
1463 retValue = VDX_OK, |
|
1464 bitsGot; |
|
1465 |
|
1466 int16 error=0; |
|
1467 u_char code; |
|
1468 vdxIMBListItem_t *MBinstance; |
|
1469 |
|
1470 vdxAssert(inBuffer != NULL); |
|
1471 vdxAssert(bitErrorIndication != NULL); |
|
1472 |
|
1473 /* get the first MB of the list */ |
|
1474 dlstHead(MBList, (void **) &MBinstance); |
|
1475 |
|
1476 /* Get ac_pred_flag and cbpy of all MBs in VP */ |
|
1477 for (i = 0; i < numMBsInVP; i++) |
|
1478 { |
|
1479 if (!MBinstance) |
|
1480 { |
|
1481 retValue = H263D_ERROR; |
|
1482 goto exitFunction; |
|
1483 } |
|
1484 |
|
1485 /* MVE */ |
|
1486 VDT_SET_START_POSITION(MBinstance,3,inBuffer->getIndex,inBuffer->bitIndex); // 3: ac_pred_flag |
|
1487 |
|
1488 /* ac_pred_flag (1 bit) */ |
|
1489 code = (u_char) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &error); |
|
1490 if (error) |
|
1491 goto exitFunction; |
|
1492 |
|
1493 /* MVE */ |
|
1494 VDT_SET_END_POSITION(MBinstance,3,inBuffer->getIndex,inBuffer->bitIndex); // 3: ac_pred_flag |
|
1495 VDT_SET_START_POSITION(MBinstance,2,inBuffer->getIndex,inBuffer->bitIndex); // 2: cbpy |
|
1496 |
|
1497 /* CBPY */ |
|
1498 retValue = vdxGetCBPY(inBuffer, &cbpyIndex, bitErrorIndication); |
|
1499 if (retValue != VDX_OK) |
|
1500 goto exitFunction; |
|
1501 |
|
1502 /* MVE */ |
|
1503 VDT_SET_END_POSITION(MBinstance,2,inBuffer->getIndex,inBuffer->bitIndex); // 2: cbpy |
|
1504 |
|
1505 /* add the information to the MB data item. |
|
1506 If the Part1 of the VP was decoded without errors (all MBs were |
|
1507 attached to the list), MBinstance should always have a valid value. */ |
|
1508 if (MBinstance != NULL) { |
|
1509 MBinstance->ac_pred_flag = code; |
|
1510 MBinstance->cbpy = cbpyIndex; |
|
1511 |
|
1512 dlstNext(MBList, (void **) &MBinstance); |
|
1513 } |
|
1514 } |
|
1515 |
|
1516 exitFunction: |
|
1517 |
|
1518 |
|
1519 /* If no error in bit buffer functions */ |
|
1520 if (!error) |
|
1521 return retValue; |
|
1522 |
|
1523 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
1524 else if (error == ERR_BIB_NOT_ENOUGH_DATA) { |
|
1525 return VDX_OK_BUT_BIT_ERROR; |
|
1526 } |
|
1527 |
|
1528 /* Else other error in bit buffer functions */ |
|
1529 else |
|
1530 return VDX_ERR_BIB; |
|
1531 } |
|
1532 |
|
1533 /* |
|
1534 * |
|
1535 * vdxGetDataPartitionedPMBLayer_Part1 |
|
1536 * |
|
1537 * Parameters: |
|
1538 * inBuffer input buffer |
|
1539 * inpParam input parameters |
|
1540 * MBList a double-linked list for soring |
|
1541 * MB parameters + DC values in the VP |
|
1542 * bitErrorIndication |
|
1543 * non-zero if a bit error has been detected |
|
1544 * within the bits accessed in this function, |
|
1545 * see biterr.h for possible values |
|
1546 * |
|
1547 * Function: |
|
1548 * This function gets the first (Motion) partition of a data |
|
1549 * partitioned encoded Video Packet in an Inter-VOP. |
|
1550 * The parameters COD, MCBPC and motion vectors of all the MBs |
|
1551 * in the VP are read and stored in the linked list. |
|
1552 * |
|
1553 * Returns: |
|
1554 * VDX_OK the function was successful |
|
1555 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
1556 * occured |
|
1557 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
1558 * |
|
1559 * Error codes: |
|
1560 * error codes returned by bibFlushBits/bibGetBits/bibShowBits |
|
1561 * |
|
1562 * |
|
1563 * |
|
1564 */ |
|
1565 |
|
1566 int vdxGetDataPartitionedPMBLayer_Part1( |
|
1567 bibBuffer_t *inBuffer, |
|
1568 bibBuffer_t */*outBuffer*/, bibBufferEdit_t */*bufEdit*/, |
|
1569 int /*aColorEffect*/, int */*aStartByteIndex*/, int */*aStartBitIndex*/, |
|
1570 const vdxGetDataPartitionedPMBLayerInputParam_t *inpParam, |
|
1571 dlst_t *MBList, |
|
1572 int *bitErrorIndication) |
|
1573 { |
|
1574 |
|
1575 static const int mbTypeToMBClass[6] = |
|
1576 {VDX_MB_INTER, VDX_MB_INTER, VDX_MB_INTER, |
|
1577 VDX_MB_INTRA, VDX_MB_INTRA, VDX_MB_INTER}; |
|
1578 |
|
1579 int mvdx, mvdy, |
|
1580 numMVs, |
|
1581 mcbpcIndex, |
|
1582 retValue = VDX_OK, |
|
1583 bitsGot; |
|
1584 |
|
1585 int16 error=0; |
|
1586 u_char code; |
|
1587 vdxPMBListItem_t *MBinstance = NULL; |
|
1588 |
|
1589 /* MVE */ |
|
1590 int StartByteIndex = 0; |
|
1591 int StartBitIndex = 0; |
|
1592 int stuffingStartByteIndex, stuffingStartBitIndex, stuffingEndByteIndex, stuffingEndBitIndex; |
|
1593 |
|
1594 stuffingStartByteIndex = stuffingEndByteIndex = inBuffer->getIndex; |
|
1595 stuffingStartBitIndex = stuffingEndBitIndex = inBuffer->bitIndex; |
|
1596 |
|
1597 vdxAssert(inpParam != NULL); |
|
1598 vdxAssert(inBuffer != NULL); |
|
1599 vdxAssert(bitErrorIndication != NULL); |
|
1600 |
|
1601 while (bibShowBits(MP4_MOTION_MARKER_COMB_LENGTH, inBuffer, &bitsGot, bitErrorIndication, &error) |
|
1602 != MP4_MOTION_MARKER_COMB && !error) |
|
1603 { |
|
1604 /* COD */ |
|
1605 code = (u_char) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &error); |
|
1606 if (error) |
|
1607 goto exitFunction; |
|
1608 |
|
1609 if (code == 0) |
|
1610 { |
|
1611 |
|
1612 /* MVE */ |
|
1613 StartByteIndex = inBuffer->getIndex; |
|
1614 StartBitIndex = inBuffer->bitIndex; |
|
1615 |
|
1616 /* MCBPC */ |
|
1617 retValue = vdxGetMCBPCInter( |
|
1618 inBuffer, |
|
1619 0, /* No PLUSPTYPE present in MPEG-4 */ |
|
1620 1, /* Four motion vectors always possible in MPEG-4 */ |
|
1621 0, /* Flag to indicate if this is the first MB of a picture. |
|
1622 Since this value is used only for checking if |
|
1623 indices 21 - 24 are allowed in H.263, we don't have |
|
1624 to set this correctly. (Indices 21 - 24 are not allowed |
|
1625 in MPEG-4 at all.) */ |
|
1626 &mcbpcIndex, |
|
1627 bitErrorIndication); |
|
1628 |
|
1629 if (retValue != VDX_OK) |
|
1630 goto exitFunction; |
|
1631 |
|
1632 if (mcbpcIndex == 20) |
|
1633 { |
|
1634 /* MVE */ |
|
1635 stuffingEndByteIndex = inBuffer->getIndex; |
|
1636 stuffingEndBitIndex = inBuffer->bitIndex; |
|
1637 |
|
1638 continue; /* skip stuffing */ |
|
1639 } |
|
1640 |
|
1641 /* Indices > 20 not allowed */ |
|
1642 if (mcbpcIndex > 20) { |
|
1643 deb0p("vdxGetDataPartitionedPMBLayer_Part1: ERROR - Illegal code.\n"); |
|
1644 retValue = VDX_OK_BUT_BIT_ERROR; |
|
1645 goto exitFunction; |
|
1646 } |
|
1647 |
|
1648 |
|
1649 } |
|
1650 |
|
1651 /* Create new MBInstance for the MB */ |
|
1652 MBinstance = (vdxPMBListItem_t *) malloc(sizeof(vdxPMBListItem_t)); |
|
1653 if (!MBinstance) |
|
1654 { |
|
1655 deb("ERROR - MBinstance creation failed\n"); |
|
1656 goto exitFunction; |
|
1657 } |
|
1658 memset(MBinstance, 0, sizeof(vdxPMBListItem_t)); |
|
1659 |
|
1660 MBinstance->fCodedMB = (u_char) (code ^ 1); |
|
1661 |
|
1662 if (MBinstance->fCodedMB) |
|
1663 { |
|
1664 /* MCBPC */ |
|
1665 MBinstance->cbpc = mcbpcIndex; |
|
1666 |
|
1667 /* MCBPC --> MB type & included data elements */ |
|
1668 MBinstance->mbType = mcbpcIndex / 4; |
|
1669 MBinstance->mbClass = mbTypeToMBClass[MBinstance->mbType]; |
|
1670 |
|
1671 /* MVE */ |
|
1672 MBinstance->mcbpc = mcbpcIndex; |
|
1673 VDT_SET_START_POSITION(MBinstance,11,stuffingStartByteIndex,stuffingStartBitIndex); // 11: MB stuffing bits |
|
1674 VDT_SET_END_POSITION(MBinstance,11,stuffingEndByteIndex,stuffingEndBitIndex); // 11: MB stuffing bits |
|
1675 VDT_SET_START_POSITION(MBinstance,0,StartByteIndex,StartBitIndex); // MCBPC |
|
1676 VDT_SET_END_POSITION(MBinstance,0,inBuffer->getIndex,inBuffer->bitIndex); |
|
1677 |
|
1678 VDT_SET_START_POSITION(MBinstance,10,inBuffer->getIndex,inBuffer->bitIndex); // MVs |
|
1679 |
|
1680 /* MVD is included always for PB-frames and always if MB type is INTER */ |
|
1681 numMVs = MBinstance->numMVs = |
|
1682 (MBinstance->mbClass == VDX_MB_INTER) ? |
|
1683 ((MBinstance->mbType == 2 || MBinstance->mbType == 5) ? 4 : 1) : 0; |
|
1684 |
|
1685 if (numMVs) { |
|
1686 int i; |
|
1687 for (i = 0; i < numMVs; i++) { |
|
1688 retValue = vdxGetScaledMVD(inBuffer,inpParam->f_code,&mvdx,bitErrorIndication); |
|
1689 if (retValue != VDX_OK) |
|
1690 goto exitFunction; |
|
1691 retValue = vdxGetScaledMVD(inBuffer,inpParam->f_code,&mvdy,bitErrorIndication); |
|
1692 if (retValue != VDX_OK) |
|
1693 goto exitFunction; |
|
1694 |
|
1695 MBinstance->mvx[i] = mvdx; |
|
1696 MBinstance->mvy[i] = mvdy; |
|
1697 } |
|
1698 } |
|
1699 |
|
1700 /* MVE */ |
|
1701 VDT_SET_END_POSITION(MBinstance,10,inBuffer->getIndex,inBuffer->bitIndex); // MVs |
|
1702 |
|
1703 } |
|
1704 |
|
1705 /* MVE */ |
|
1706 // begin another MB, record the position of MB stuffing |
|
1707 stuffingStartByteIndex = stuffingEndByteIndex = inBuffer->getIndex; |
|
1708 stuffingStartBitIndex = stuffingEndBitIndex = inBuffer->bitIndex; |
|
1709 |
|
1710 /* Put MBinstance into the queue */ |
|
1711 dlstAddAfterCurr(MBList, MBinstance); |
|
1712 MBinstance = NULL; |
|
1713 } |
|
1714 |
|
1715 exitFunction: |
|
1716 |
|
1717 if (MBinstance) |
|
1718 free(MBinstance); |
|
1719 |
|
1720 |
|
1721 /* If no error in bit buffer functions */ |
|
1722 if (!error) |
|
1723 return retValue; |
|
1724 |
|
1725 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
1726 else if (error == ERR_BIB_NOT_ENOUGH_DATA) { |
|
1727 return VDX_OK_BUT_BIT_ERROR; |
|
1728 } |
|
1729 |
|
1730 /* Else other error in bit buffer functions */ |
|
1731 else |
|
1732 return VDX_ERR_BIB; |
|
1733 |
|
1734 } |
|
1735 |
|
1736 |
|
1737 /* |
|
1738 * |
|
1739 * vdxGetDataPartitionedPMBLayer_Part2 |
|
1740 * |
|
1741 * Parameters: |
|
1742 * inBuffer input buffer |
|
1743 * inpParam input parameters |
|
1744 * MBList a double-linked list for soring |
|
1745 * MB parameters + DC values in the VP |
|
1746 * bitErrorIndication |
|
1747 * non-zero if a bit error has been detected |
|
1748 * within the bits accessed in this function, |
|
1749 * see biterr.h for possible values |
|
1750 * |
|
1751 * Function: |
|
1752 * This function gets the second (CBPY) partition of a data |
|
1753 * partitioned encoded Video Packet in an Inter-VOP. |
|
1754 * The parameters CBPY, DQUANT and if Intra MB its DC coeffs |
|
1755 * of all the MBs in the VP are read and stored in the linked list. |
|
1756 * |
|
1757 * Returns: |
|
1758 * VDX_OK the function was successful |
|
1759 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
1760 * occured |
|
1761 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
1762 * |
|
1763 * Error codes: |
|
1764 * error codes returned by bibFlushBits/bibGetBits/bibShowBits |
|
1765 * |
|
1766 * |
|
1767 * |
|
1768 */ |
|
1769 |
|
1770 int vdxGetDataPartitionedPMBLayer_Part2( |
|
1771 bibBuffer_t *inBuffer, |
|
1772 bibBuffer_t *outBuffer, |
|
1773 bibBufferEdit_t *bufEdit, |
|
1774 int aColorEffect, int *aStartByteIndex, int *aStartBitIndex, |
|
1775 CMPEG4Transcoder *hTranscoder, |
|
1776 const vdxGetDataPartitionedPMBLayerInputParam_t *inpParam, |
|
1777 dlst_t *MBList, |
|
1778 int *bitErrorIndication) |
|
1779 { |
|
1780 |
|
1781 static const int mbTypeToDQUANTI[6] = |
|
1782 {0, 1, 0, 0, 1, 1}; |
|
1783 |
|
1784 int fDQUANT, |
|
1785 cbpyIndex, |
|
1786 retValue = VDX_OK, |
|
1787 new_quant, previous_quant, |
|
1788 bitsGot, |
|
1789 i, |
|
1790 IntraDC_size, |
|
1791 IntraDC_delta; |
|
1792 |
|
1793 int16 error=0; |
|
1794 u_char code; |
|
1795 vdxPMBListItem_t *MBinstance; |
|
1796 |
|
1797 vdxAssert(inpParam != NULL); |
|
1798 vdxAssert(inBuffer != NULL); |
|
1799 vdxAssert(bitErrorIndication != NULL); |
|
1800 |
|
1801 previous_quant = inpParam->quant; |
|
1802 |
|
1803 /* Get ac_pred_flag and cbpy of all MBs in VP */ |
|
1804 for (dlstHead(MBList, (void **) &MBinstance); |
|
1805 MBinstance != NULL; |
|
1806 dlstNext(MBList, (void **) &MBinstance)) |
|
1807 { |
|
1808 |
|
1809 if (!MBinstance->fCodedMB) continue; |
|
1810 |
|
1811 /* MVE */ |
|
1812 VDT_SET_START_POSITION(MBinstance,3,inBuffer->getIndex,inBuffer->bitIndex); // 3 ac_pred_flag |
|
1813 |
|
1814 if (MBinstance->mbClass == VDX_MB_INTRA) { |
|
1815 |
|
1816 /* ac_pred_flag (1 bit) */ |
|
1817 code = (u_char) bibGetBits(1, inBuffer, &bitsGot, bitErrorIndication, &error); |
|
1818 if (error) |
|
1819 goto exitFunction; |
|
1820 |
|
1821 MBinstance->ac_pred_flag = code; |
|
1822 } |
|
1823 |
|
1824 /* MVE */ |
|
1825 VDT_SET_END_POSITION(MBinstance,3,inBuffer->getIndex,inBuffer->bitIndex); // 3 ac_pred_flag |
|
1826 VDT_SET_START_POSITION(MBinstance,2,inBuffer->getIndex,inBuffer->bitIndex); // 2: cbpy |
|
1827 |
|
1828 /* CBPY */ |
|
1829 retValue = vdxGetCBPY(inBuffer, &cbpyIndex, bitErrorIndication); |
|
1830 if (retValue != VDX_OK) |
|
1831 goto exitFunction; |
|
1832 |
|
1833 if (MBinstance->mbClass == VDX_MB_INTER) |
|
1834 /* Convert index to INTER CBPY */ |
|
1835 cbpyIndex = 15 - cbpyIndex; |
|
1836 |
|
1837 MBinstance->cbpy = cbpyIndex; |
|
1838 |
|
1839 /* MVE */ |
|
1840 VDT_SET_END_POSITION(MBinstance,2,inBuffer->getIndex,inBuffer->bitIndex); // |
|
1841 VDT_SET_START_POSITION(MBinstance,1,inBuffer->getIndex,inBuffer->bitIndex); // 1: dquant |
|
1842 |
|
1843 /* DQUANT is given for MCBPC indexes 4..7 */ |
|
1844 fDQUANT = mbTypeToDQUANTI[MBinstance->mbType]; |
|
1845 |
|
1846 if (fDQUANT) { |
|
1847 retValue = vdxUpdateQuant(inBuffer, 0, previous_quant, |
|
1848 &new_quant, bitErrorIndication); |
|
1849 if (retValue != VDX_OK) |
|
1850 goto exitFunction; |
|
1851 } |
|
1852 /* Else no DQUANT */ |
|
1853 else |
|
1854 new_quant = previous_quant; |
|
1855 |
|
1856 MBinstance->dquant = fDQUANT ? new_quant - previous_quant : 0; |
|
1857 MBinstance->quant = previous_quant = new_quant; |
|
1858 |
|
1859 /* MVE */ |
|
1860 VDT_SET_END_POSITION(MBinstance,1,inBuffer->getIndex,inBuffer->bitIndex); // 1: dquant |
|
1861 VDT_SET_START_POSITION(MBinstance,4,inBuffer->getIndex,inBuffer->bitIndex); // 4: intraDC |
|
1862 VDT_SET_START_POSITION(MBinstance,5,inBuffer->getIndex,inBuffer->bitIndex); // 5: intraDC |
|
1863 VDT_SET_START_POSITION(MBinstance,6,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC |
|
1864 VDT_SET_START_POSITION(MBinstance,7,inBuffer->getIndex,inBuffer->bitIndex); // 7: intraDC |
|
1865 VDT_SET_START_POSITION(MBinstance,8,inBuffer->getIndex,inBuffer->bitIndex); // 8: intraDC |
|
1866 VDT_SET_START_POSITION(MBinstance,9,inBuffer->getIndex,inBuffer->bitIndex); // 9: intraDC |
|
1867 |
|
1868 VDT_SET_END_POSITION(MBinstance,4,inBuffer->getIndex,inBuffer->bitIndex); // 4: intraDC |
|
1869 VDT_SET_END_POSITION(MBinstance,5,inBuffer->getIndex,inBuffer->bitIndex); // 5: intraDC |
|
1870 VDT_SET_END_POSITION(MBinstance,6,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC |
|
1871 VDT_SET_END_POSITION(MBinstance,7,inBuffer->getIndex,inBuffer->bitIndex); // 7: intraDC |
|
1872 VDT_SET_END_POSITION(MBinstance,8,inBuffer->getIndex,inBuffer->bitIndex); // 8: intraDC |
|
1873 VDT_SET_END_POSITION(MBinstance,9,inBuffer->getIndex,inBuffer->bitIndex); // 9: intraDC |
|
1874 |
|
1875 /* Color Toning */ |
|
1876 hTranscoder->AfterMBLayer(new_quant); |
|
1877 |
|
1878 if (MBinstance->mbClass == VDX_MB_INTRA) { |
|
1879 MBinstance->switched = aicIntraDCSwitch(inpParam->intra_dc_vlc_thr,new_quant); |
|
1880 |
|
1881 /* Intra_DC_Coeffs */ |
|
1882 if(!MBinstance->switched) { |
|
1883 for (i=0; i<6; i++) { |
|
1884 |
|
1885 /* MVE */ |
|
1886 VDT_SET_START_POSITION(MBinstance,i+4,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC,chrominance |
|
1887 |
|
1888 retValue = vdxGetIntraDC(inBuffer, outBuffer, bufEdit, aColorEffect, aStartByteIndex, aStartBitIndex, |
|
1889 i, &IntraDC_size, &IntraDC_delta, bitErrorIndication); |
|
1890 |
|
1891 /* MVE */ |
|
1892 VDT_SET_END_POSITION(MBinstance,i+4,inBuffer->getIndex,inBuffer->bitIndex); // 6: intraDC,chrominance |
|
1893 |
|
1894 if (retValue != VDX_OK) |
|
1895 goto exitFunction; |
|
1896 MBinstance->DC[i] = IntraDC_delta; |
|
1897 } |
|
1898 } |
|
1899 } |
|
1900 } |
|
1901 |
|
1902 exitFunction: |
|
1903 |
|
1904 |
|
1905 /* If no error in bit buffer functions */ |
|
1906 if (!error) |
|
1907 return retValue; |
|
1908 |
|
1909 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
1910 else if (error == ERR_BIB_NOT_ENOUGH_DATA) { |
|
1911 return VDX_OK_BUT_BIT_ERROR; |
|
1912 } |
|
1913 |
|
1914 /* Else other error in bit buffer functions */ |
|
1915 else |
|
1916 return VDX_ERR_BIB; |
|
1917 |
|
1918 } |
|
1919 |
|
1920 /* |
|
1921 * Block Layer Global Functions |
|
1922 */ |
|
1923 |
|
1924 /* {{-output"vdxGetMPEGIntraDCTBlock.txt"}} */ |
|
1925 /* |
|
1926 * vdxGetMPEGIntraDCTBlock |
|
1927 * |
|
1928 * |
|
1929 * Parameters: |
|
1930 * inBuffer pointer to bit buffer instance |
|
1931 * startIndex the first index in block where to put data |
|
1932 * block DCT coefficients of the block |
|
1933 * in zigzag order |
|
1934 * bitErrorIndication non-zero if a bit error has been detected |
|
1935 * within the bits accessed in this function, |
|
1936 * see biterr.h for possible values |
|
1937 * |
|
1938 * Function: |
|
1939 * This function gets the DCT coefficients for one INTRA block. |
|
1940 * |
|
1941 * Returns: |
|
1942 * VDX_OK the function was successful |
|
1943 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
1944 * occured |
|
1945 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
1946 * |
|
1947 * |
|
1948 * |
|
1949 */ |
|
1950 |
|
1951 int vdxGetMPEGIntraDCTBlock( |
|
1952 bibBuffer_t *inBuffer, |
|
1953 int startIndex, |
|
1954 int *block, |
|
1955 int *bitErrorIndication) |
|
1956 /* {{-output"vdxGetMPEGIntraDCTBlock.txt"}} */ |
|
1957 { |
|
1958 int |
|
1959 numBitsGot, |
|
1960 retValue = VDX_OK, |
|
1961 tmpvar; |
|
1962 int16 |
|
1963 bibError = 0; |
|
1964 |
|
1965 static const vdxVLCTable_t Intra_tcoefTab0[] = { |
|
1966 {0x10401, 7}, {0x10301, 7}, {0x00601, 7}, {0x10501, 7}, |
|
1967 {0x00701, 7}, {0x00202, 7}, {0x00103, 7}, {0x00009, 7}, |
|
1968 {0x10002, 6}, {0x10002, 6}, {0x00501, 6}, {0x00501, 6}, |
|
1969 {0x10201, 6}, {0x10201, 6}, {0x10101, 6}, {0x10101, 6}, |
|
1970 {0x00401, 6}, {0x00401, 6}, {0x00301, 6}, {0x00301, 6}, |
|
1971 {0x00008, 6}, {0x00008, 6}, {0x00007, 6}, {0x00007, 6}, |
|
1972 {0x00102, 6}, {0x00102, 6}, {0x00006, 6}, {0x00006, 6}, |
|
1973 {0x00201, 5}, {0x00201, 5}, {0x00201, 5}, {0x00201, 5}, |
|
1974 {0x00005, 5}, {0x00005, 5}, {0x00005, 5}, {0x00005, 5}, |
|
1975 {0x00004, 5}, {0x00004, 5}, {0x00004, 5}, {0x00004, 5}, |
|
1976 {0x10001, 4}, {0x10001, 4}, {0x10001, 4}, {0x10001, 4}, |
|
1977 {0x10001, 4}, {0x10001, 4}, {0x10001, 4}, {0x10001, 4}, |
|
1978 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1979 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1980 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1981 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1982 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1983 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1984 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1985 {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, {0x00001, 2}, |
|
1986 {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, |
|
1987 {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, |
|
1988 {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, |
|
1989 {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, {0x00002, 3}, |
|
1990 {0x00101, 4}, {0x00101, 4}, {0x00101, 4}, {0x00101, 4}, |
|
1991 {0x00101, 4}, {0x00101, 4}, {0x00101, 4}, {0x00101, 4}, |
|
1992 {0x00003, 4}, {0x00003, 4}, {0x00003, 4}, {0x00003, 4}, |
|
1993 {0x00003, 4}, {0x00003, 4}, {0x00003, 4}, {0x00003, 4}, |
|
1994 }; |
|
1995 |
|
1996 |
|
1997 static const vdxVLCTable_t Intra_tcoefTab1[] = { |
|
1998 {0x00012,10}, {0x00011,10}, {0x10e01, 9}, {0x10e01, 9}, |
|
1999 {0x10d01, 9}, {0x10d01, 9}, {0x10c01, 9}, {0x10c01, 9}, |
|
2000 {0x10b01, 9}, {0x10b01, 9}, {0x10a01, 9}, {0x10a01, 9}, |
|
2001 {0x10102, 9}, {0x10102, 9}, {0x10004, 9}, {0x10004, 9}, |
|
2002 {0x00c01, 9}, {0x00c01, 9}, {0x00b01, 9}, {0x00b01, 9}, |
|
2003 {0x00702, 9}, {0x00702, 9}, {0x00602, 9}, {0x00602, 9}, |
|
2004 {0x00502, 9}, {0x00502, 9}, {0x00303, 9}, {0x00303, 9}, |
|
2005 {0x00203, 9}, {0x00203, 9}, {0x00106, 9}, {0x00106, 9}, |
|
2006 {0x00105, 9}, {0x00105, 9}, {0x00010, 9}, {0x00010, 9}, |
|
2007 {0x00402, 9}, {0x00402, 9}, {0x0000f, 9}, {0x0000f, 9}, |
|
2008 {0x0000e, 9}, {0x0000e, 9}, {0x0000d, 9}, {0x0000d, 9}, |
|
2009 {0x10801, 8}, {0x10801, 8}, {0x10801, 8}, {0x10801, 8}, |
|
2010 {0x10701, 8}, {0x10701, 8}, {0x10701, 8}, {0x10701, 8}, |
|
2011 {0x10601, 8}, {0x10601, 8}, {0x10601, 8}, {0x10601, 8}, |
|
2012 {0x10003, 8}, {0x10003, 8}, {0x10003, 8}, {0x10003, 8}, |
|
2013 {0x00a01, 8}, {0x00a01, 8}, {0x00a01, 8}, {0x00a01, 8}, |
|
2014 {0x00901, 8}, {0x00901, 8}, {0x00901, 8}, {0x00901, 8}, |
|
2015 {0x00801, 8}, {0x00801, 8}, {0x00801, 8}, {0x00801, 8}, |
|
2016 {0x10901, 8}, {0x10901, 8}, {0x10901, 8}, {0x10901, 8}, |
|
2017 {0x00302, 8}, {0x00302, 8}, {0x00302, 8}, {0x00302, 8}, |
|
2018 {0x00104, 8}, {0x00104, 8}, {0x00104, 8}, {0x00104, 8}, |
|
2019 {0x0000c, 8}, {0x0000c, 8}, {0x0000c, 8}, {0x0000c, 8}, |
|
2020 {0x0000b, 8}, {0x0000b, 8}, {0x0000b, 8}, {0x0000b, 8}, |
|
2021 {0x0000a, 8}, {0x0000a, 8}, {0x0000a, 8}, {0x0000a, 8}, |
|
2022 }; |
|
2023 |
|
2024 static const vdxVLCTable_t Intra_tcoefTab2[] = { |
|
2025 {0x10007,11}, {0x10007,11}, {0x10006,11}, {0x10006,11}, |
|
2026 {0x00016,11}, {0x00016,11}, {0x00015,11}, {0x00015,11}, |
|
2027 {0x10202,10}, {0x10202,10}, {0x10202,10}, {0x10202,10}, |
|
2028 {0x10103,10}, {0x10103,10}, {0x10103,10}, {0x10103,10}, |
|
2029 {0x10005,10}, {0x10005,10}, {0x10005,10}, {0x10005,10}, |
|
2030 {0x00d01,10}, {0x00d01,10}, {0x00d01,10}, {0x00d01,10}, |
|
2031 {0x00503,10}, {0x00503,10}, {0x00503,10}, {0x00503,10}, |
|
2032 {0x00802,10}, {0x00802,10}, {0x00802,10}, {0x00802,10}, |
|
2033 {0x00403,10}, {0x00403,10}, {0x00403,10}, {0x00403,10}, |
|
2034 {0x00304,10}, {0x00304,10}, {0x00304,10}, {0x00304,10}, |
|
2035 {0x00204,10}, {0x00204,10}, {0x00204,10}, {0x00204,10}, |
|
2036 {0x00107,10}, {0x00107,10}, {0x00107,10}, {0x00107,10}, |
|
2037 {0x00014,10}, {0x00014,10}, {0x00014,10}, {0x00014,10}, |
|
2038 {0x00013,10}, {0x00013,10}, {0x00013,10}, {0x00013,10}, |
|
2039 {0x00017,11}, {0x00017,11}, {0x00018,11}, {0x00018,11}, |
|
2040 {0x00108,11}, {0x00108,11}, {0x00902,11}, {0x00902,11}, |
|
2041 {0x10302,11}, {0x10302,11}, {0x10402,11}, {0x10402,11}, |
|
2042 {0x10f01,11}, {0x10f01,11}, {0x11001,11}, {0x11001,11}, |
|
2043 {0x00019,12}, {0x0001a,12}, {0x0001b,12}, {0x00109,12}, |
|
2044 {0x00603,12}, {0x0010a,12}, {0x00205,12}, {0x00703,12}, |
|
2045 {0x00e01,12}, {0x10008,12}, {0x10502,12}, {0x10602,12}, |
|
2046 {0x11101,12}, {0x11201,12}, {0x11301,12}, {0x11401,12}, |
|
2047 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2048 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2049 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2050 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2051 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2052 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2053 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2054 {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, {0x01bff, 7}, |
|
2055 }; |
|
2056 |
|
2057 static const int intra_max_level[2][64] = { |
|
2058 {27, 10, 5, 4, 3, 3, 3, 3, |
|
2059 2, 2, 1, 1, 1, 1, 1, 0, |
|
2060 0, 0, 0, 0, 0, 0, 0, 0, |
|
2061 0, 0, 0, 0, 0, 0, 0, 0, |
|
2062 0, 0, 0, 0, 0, 0, 0, 0, |
|
2063 0, 0, 0, 0, 0, 0, 0, 0, |
|
2064 0, 0, 0, 0, 0, 0, 0, 0, |
|
2065 0, 0, 0, 0, 0, 0, 0, 0, |
|
2066 }, |
|
2067 |
|
2068 {8, 3, 2, 2, 2, 2, 2, 1, |
|
2069 1, 1, 1, 1, 1, 1, 1, 1, |
|
2070 1, 1, 1, 1, 1, 0, 0, 0, |
|
2071 0, 0, 0, 0, 0, 0, 0, 0, |
|
2072 0, 0, 0, 0, 0, 0, 0, 0, |
|
2073 0, 0, 0, 0, 0, 0, 0, 0, |
|
2074 0, 0, 0, 0, 0, 0, 0, 0, |
|
2075 0, 0, 0, 0, 0, 0, 0, 0 |
|
2076 } |
|
2077 }; |
|
2078 |
|
2079 static const int intra_max_run0[28] = { 999, 14, 9, 7, 3, 2, 1, |
|
2080 1, 1, 1, 1, 0, 0, 0, |
|
2081 0, 0, 0, 0, 0, 0, 0, |
|
2082 0, 0, 0, 0, 0, 0, 0 |
|
2083 }; |
|
2084 |
|
2085 static const int intra_max_run1[9] = { 999, 20, 6, |
|
2086 1, 0, 0, |
|
2087 0, 0, 0 |
|
2088 }; |
|
2089 |
|
2090 int |
|
2091 code, /* bits got from bit buffer */ |
|
2092 index, /* index to zigzag table running from 1 to 63 */ |
|
2093 run, /* RUN code */ |
|
2094 level; /* LEVEL code */ |
|
2095 |
|
2096 u_int32 |
|
2097 last, /* LAST code (see standard) */ |
|
2098 sign; /* sign for level */ |
|
2099 |
|
2100 vdxVLCTable_t const *tab; /* pointer to lookup table */ |
|
2101 |
|
2102 vdxAssert(inBuffer != NULL); |
|
2103 vdxAssert(startIndex == 0 || startIndex == 1); |
|
2104 vdxAssert(block != NULL); |
|
2105 vdxAssert(bitErrorIndication != NULL); |
|
2106 |
|
2107 index = startIndex; |
|
2108 |
|
2109 do { |
|
2110 code = (int) bibShowBits(12, inBuffer, &numBitsGot, bitErrorIndication, |
|
2111 &bibError); |
|
2112 if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
2113 deb("vdxGetDCTBlock: bibShowBits returned not enough data --> " |
|
2114 "try to use the data available.\n"); |
|
2115 code <<= 12 - numBitsGot; |
|
2116 bibError = 0; |
|
2117 } |
|
2118 else if (bibError ) { |
|
2119 goto exitFunction; |
|
2120 } |
|
2121 |
|
2122 /* Select the right table and index for the codeword */ |
|
2123 if (code >= 512) |
|
2124 tab = &Intra_tcoefTab0[(code >> 5) - 16]; |
|
2125 else if (code >= 128) |
|
2126 tab = &Intra_tcoefTab1[(code >> 2) - 32]; |
|
2127 else if (code >= 8) |
|
2128 tab = &Intra_tcoefTab2[code - 8]; |
|
2129 else { |
|
2130 deb("ERROR - illegal TCOEF\n"); |
|
2131 retValue = VDX_OK_BUT_BIT_ERROR; |
|
2132 goto exitFunction; |
|
2133 } |
|
2134 |
|
2135 /* Flush the codeword from the buffer */ |
|
2136 bibFlushBits(tab->len, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2137 if (bibError) |
|
2138 goto exitFunction; |
|
2139 |
|
2140 /* the following is modified for 3-mode escape */ |
|
2141 if (tab->val == 7167) /* ESCAPE */ |
|
2142 { |
|
2143 |
|
2144 int run_offset=0, |
|
2145 level_offset=0; |
|
2146 |
|
2147 code = (int) bibShowBits(2, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2148 if (bibError) { |
|
2149 goto exitFunction; |
|
2150 } |
|
2151 |
|
2152 if (code<=2) { |
|
2153 |
|
2154 /* escape modes: level or run is offset */ |
|
2155 if (code==2) run_offset=1; |
|
2156 else level_offset=1; |
|
2157 |
|
2158 /* Flush the escape code from the buffer */ |
|
2159 if (run_offset) |
|
2160 bibFlushBits(2, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2161 else |
|
2162 bibFlushBits(1, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2163 |
|
2164 if (bibError) |
|
2165 goto exitFunction; |
|
2166 /* Read next codeword */ |
|
2167 code = (int) bibShowBits(12, inBuffer, &numBitsGot, bitErrorIndication, |
|
2168 &bibError); |
|
2169 if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
2170 deb("vdxGetDCTBlock: bibShowBits returned not enough data --> " |
|
2171 "try to use the data available.\n"); |
|
2172 code <<= 12 - numBitsGot; |
|
2173 bibError = 0; |
|
2174 } |
|
2175 else if (bibError) { |
|
2176 goto exitFunction; |
|
2177 } |
|
2178 |
|
2179 /* Select the right table and index for the codeword */ |
|
2180 if (code >= 512) |
|
2181 tab = &Intra_tcoefTab0[(code >> 5) - 16]; |
|
2182 else if (code >= 128) |
|
2183 tab = &Intra_tcoefTab1[(code >> 2) - 32]; |
|
2184 else if (code >= 8) |
|
2185 tab = &Intra_tcoefTab2[code - 8]; |
|
2186 else { |
|
2187 deb("ERROR - illegal TCOEF\n"); |
|
2188 retValue = VDX_OK_BUT_BIT_ERROR; |
|
2189 goto exitFunction; |
|
2190 } |
|
2191 |
|
2192 bibFlushBits(tab->len, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2193 if (bibError) |
|
2194 goto exitFunction; |
|
2195 |
|
2196 run = (tab->val >> 8) & 255; |
|
2197 level = tab->val & 255; |
|
2198 last = (tab->val >> 16) & 1; |
|
2199 |
|
2200 /* need to add back the max level */ |
|
2201 if (level_offset) |
|
2202 level = level + intra_max_level[last][run]; |
|
2203 else if (last) |
|
2204 run = run + intra_max_run1[level]+1; |
|
2205 else |
|
2206 run = run + intra_max_run0[level]+1; |
|
2207 |
|
2208 sign = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication, |
|
2209 &bibError); |
|
2210 |
|
2211 if ( bibError ) |
|
2212 goto exitFunction; |
|
2213 |
|
2214 if (sign) |
|
2215 level = -level; |
|
2216 |
|
2217 } else { |
|
2218 |
|
2219 /* Flush the codeword from the buffer */ |
|
2220 bibFlushBits(2, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2221 if (bibError) |
|
2222 goto exitFunction; |
|
2223 |
|
2224 /* LAST */ |
|
2225 last = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication, |
|
2226 &bibError); |
|
2227 if ( bibError ) |
|
2228 goto exitFunction; |
|
2229 /* RUN */ |
|
2230 run = (int) bibGetBits(6, inBuffer, &numBitsGot, bitErrorIndication, |
|
2231 &bibError); |
|
2232 if ( bibError ) |
|
2233 goto exitFunction; |
|
2234 /* MARKER BIT */ |
|
2235 tmpvar = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication,&bibError); |
|
2236 if ( bibError ) |
|
2237 goto exitFunction; |
|
2238 if (!tmpvar) { |
|
2239 |
|
2240 retValue = VDX_OK_BUT_BIT_ERROR; |
|
2241 goto exitFunction; |
|
2242 } |
|
2243 /* LEVEL */ |
|
2244 level = (int) bibGetBits(12, inBuffer, &numBitsGot, bitErrorIndication, |
|
2245 &bibError); |
|
2246 if ( bibError ) |
|
2247 goto exitFunction; |
|
2248 /* MARKER BIT */ |
|
2249 tmpvar = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication,&bibError); |
|
2250 if ( bibError ) |
|
2251 goto exitFunction; |
|
2252 if(!tmpvar) { |
|
2253 |
|
2254 retValue = VDX_OK_BUT_BIT_ERROR; |
|
2255 goto exitFunction; |
|
2256 } |
|
2257 |
|
2258 /* 0000 0000 0000 and 1000 0000 0000 is forbidden unless in MQ mode */ |
|
2259 if (level == 0 || level == 2048) { |
|
2260 deb("ERROR - illegal level.\n"); |
|
2261 retValue = VDX_OK_BUT_BIT_ERROR; |
|
2262 goto exitFunction; |
|
2263 } |
|
2264 |
|
2265 /* Codes 1000 0000 0001 .. 1111 1111 1111 */ |
|
2266 if (level > 2048) |
|
2267 level -= 4096; |
|
2268 |
|
2269 } /* flc */ |
|
2270 } |
|
2271 else { |
|
2272 |
|
2273 run = (tab->val >> 8) & 255; |
|
2274 level = tab->val & 255; |
|
2275 last = (tab->val >> 16) & 1; |
|
2276 |
|
2277 sign = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2278 if ( bibError ) |
|
2279 goto exitFunction; |
|
2280 |
|
2281 if (sign) |
|
2282 level = -level; |
|
2283 } |
|
2284 |
|
2285 /* If too many coefficients */ |
|
2286 if (index + run > 63) { |
|
2287 deb("ERROR - too many TCOEFs.\n"); |
|
2288 retValue = VDX_OK_BUT_BIT_ERROR; |
|
2289 goto exitFunction; |
|
2290 } |
|
2291 |
|
2292 /* Do run-length decoding */ |
|
2293 while (run--) |
|
2294 block[index++] = 0; |
|
2295 |
|
2296 block[index++] = level; |
|
2297 |
|
2298 } while (!last); |
|
2299 |
|
2300 exitFunction: |
|
2301 |
|
2302 /* Set the rest of the coefficients to zero */ |
|
2303 while (index <= 63) { |
|
2304 block[index++] = 0; |
|
2305 } |
|
2306 |
|
2307 if (!bibError) |
|
2308 return retValue; |
|
2309 |
|
2310 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
2311 return VDX_OK_BUT_BIT_ERROR; |
|
2312 } |
|
2313 |
|
2314 else |
|
2315 return VDX_ERR_BIB; |
|
2316 } |
|
2317 |
|
2318 /* |
|
2319 * Macroblock Layer Local Functions |
|
2320 */ |
|
2321 |
|
2322 /* |
|
2323 * |
|
2324 * vdxGetScaledMVD |
|
2325 * |
|
2326 * |
|
2327 * Parameters: |
|
2328 * inBuffer input buffer |
|
2329 * f_code f_code for current Vop |
|
2330 * error error code |
|
2331 * *mvd10 returned MV value (10x) |
|
2332 * *bitErrorIndication |
|
2333 * |
|
2334 * Function: |
|
2335 * Calculates a component of a block (or MB) vector by decoding |
|
2336 * the magnitude & residual of the diff. vector, making the prediction, |
|
2337 * and combining the decoded diff. and the predicted values |
|
2338 * |
|
2339 * Returns: |
|
2340 * VDX_OK the function was successful |
|
2341 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
2342 * occured |
|
2343 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
2344 * |
|
2345 * |
|
2346 */ |
|
2347 |
|
2348 |
|
2349 int vdxGetScaledMVD(bibBuffer_t *inBuffer, int f_code, |
|
2350 int *mvd10, int *bitErrorIndication) |
|
2351 { |
|
2352 |
|
2353 int residual=0, vlc_code_mag=0; |
|
2354 int diff_vector, |
|
2355 retValue = VDX_OK, |
|
2356 numBitsGot; |
|
2357 int16 bibError = 0; |
|
2358 |
|
2359 /* decode component */ |
|
2360 retValue = vdxGetMVD(inBuffer,&vlc_code_mag,bitErrorIndication); |
|
2361 if (retValue < 0) |
|
2362 goto exitFunction; |
|
2363 |
|
2364 if ((f_code > 1) && (vlc_code_mag != 0)) |
|
2365 { |
|
2366 vlc_code_mag /= 5; |
|
2367 |
|
2368 residual = (int) |
|
2369 bibGetBits(f_code-1, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2370 if (bibError) |
|
2371 goto exitFunction; |
|
2372 |
|
2373 diff_vector = ((abs(vlc_code_mag)-1)<<(f_code-1)) + residual + 1; |
|
2374 if (vlc_code_mag < 0) |
|
2375 diff_vector = -diff_vector; |
|
2376 |
|
2377 *mvd10 = diff_vector * 5; |
|
2378 } else |
|
2379 *mvd10 = vlc_code_mag; |
|
2380 |
|
2381 exitFunction: |
|
2382 |
|
2383 if (bibError) { |
|
2384 if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
2385 return VDX_OK_BUT_BIT_ERROR; |
|
2386 } |
|
2387 return VDX_ERR_BIB; |
|
2388 } |
|
2389 |
|
2390 return retValue; |
|
2391 } |
|
2392 |
|
2393 /* |
|
2394 * vdxGetIntraDC |
|
2395 * |
|
2396 * |
|
2397 * Parameters: |
|
2398 * inBuffer pointer to bit buffer instance |
|
2399 * compnum number of the block component in the |
|
2400 * 4:2:2 YUV scheme |
|
2401 * (0..3) luma, (4..5) chroma |
|
2402 * IntraDCDelta the read Intra DC value (quantized) |
|
2403 * bitErrorIndication non-zero if a bit error has been detected |
|
2404 * within the bits accessed in this function, |
|
2405 * see biterr.h for possible values |
|
2406 * |
|
2407 * Function: |
|
2408 * This function gets the Intra DC value |
|
2409 * |
|
2410 * Returns: |
|
2411 * VDX_OK the function was successful |
|
2412 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
2413 * occured |
|
2414 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
2415 * |
|
2416 * |
|
2417 * |
|
2418 */ |
|
2419 |
|
2420 int vdxGetIntraDC(bibBuffer_t *inBuffer, bibBuffer_t */*outBuffer*/, bibBufferEdit_t */*bufEdit*/, int /*aColorEffect*/, |
|
2421 int */*aStartByteIndex*/, int */*aStartBitIndex*/, int compnum, int *IntraDC_size, int *IntraDCDelta, |
|
2422 int *bitErrorIndication) |
|
2423 { |
|
2424 u_int32 code; |
|
2425 int16 bibError=0; |
|
2426 int first_bit, |
|
2427 numBitsGot, |
|
2428 retValue, |
|
2429 IntraDCSize=0, |
|
2430 tmpvar; |
|
2431 |
|
2432 vdxAssert(inBuffer != NULL); |
|
2433 vdxAssert(IntraDCDelta != NULL); |
|
2434 vdxAssert(bitErrorIndication != NULL); |
|
2435 |
|
2436 /* read DC size 2 - 8 bits */ |
|
2437 retValue = vdxGetIntraDCSize(inBuffer, compnum, &IntraDCSize, bitErrorIndication); |
|
2438 if (retValue != VDX_OK) |
|
2439 return retValue; |
|
2440 |
|
2441 *IntraDC_size = IntraDCSize; |
|
2442 if (IntraDCSize == 0) { |
|
2443 |
|
2444 *IntraDCDelta = 0; |
|
2445 |
|
2446 } else { |
|
2447 |
|
2448 /* read delta DC 0 - 8 bits */ |
|
2449 code = bibGetBits(IntraDCSize,inBuffer,&numBitsGot,bitErrorIndication, &bibError); |
|
2450 |
|
2451 if (bibError) { |
|
2452 if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
2453 return VDX_OK_BUT_BIT_ERROR; |
|
2454 } |
|
2455 return VDX_ERR_BIB; |
|
2456 } |
|
2457 |
|
2458 first_bit = code >> (IntraDCSize-1); |
|
2459 |
|
2460 if (first_bit == 0 ) |
|
2461 { /* negative delta INTRA DC */ |
|
2462 *IntraDCDelta = -1 * (int) (code ^ ((1 << IntraDCSize)-1)); |
|
2463 } |
|
2464 else |
|
2465 { /* positive delta INTRA DC */ |
|
2466 *IntraDCDelta = (int) code; |
|
2467 } |
|
2468 |
|
2469 if (IntraDCSize > 8) { |
|
2470 /* Marker Bit */ |
|
2471 tmpvar = bibGetBits(1,inBuffer,&numBitsGot,bitErrorIndication, &bibError); |
|
2472 if( !tmpvar ) { |
|
2473 return VDX_OK_BUT_BIT_ERROR; |
|
2474 } |
|
2475 } |
|
2476 } |
|
2477 |
|
2478 return VDX_OK; |
|
2479 } |
|
2480 |
|
2481 /* |
|
2482 * vdxGetIntraDCSize |
|
2483 * |
|
2484 * |
|
2485 * Parameters: |
|
2486 * inBuffer pointer to bit buffer instance |
|
2487 * compnum number of the block component in the |
|
2488 * 4:2:2 YUV scheme |
|
2489 * (0..3) luma, (4..5) chroma |
|
2490 * IntraDCSize Size of the following Intra DC FLC |
|
2491 * bitErrorIndication non-zero if a bit error has been detected |
|
2492 * within the bits accessed in this function, |
|
2493 * see biterr.h for possible values |
|
2494 * |
|
2495 * Function: |
|
2496 * This function gets the IntraDCSize VLC for luma or chroma |
|
2497 * |
|
2498 * Returns: |
|
2499 * VDX_OK the function was successful |
|
2500 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
2501 * occured |
|
2502 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
2503 * |
|
2504 * |
|
2505 * |
|
2506 */ |
|
2507 |
|
2508 static int vdxGetIntraDCSize(bibBuffer_t *inBuffer, int compnum, int *IntraDCSize, |
|
2509 int *bitErrorIndication) |
|
2510 { |
|
2511 u_int32 code; |
|
2512 int numBitsGot, |
|
2513 retValue = VDX_OK; |
|
2514 int16 |
|
2515 bibError = 0; |
|
2516 |
|
2517 if( compnum >=0 && compnum < 4 ) /* luminance block */ |
|
2518 { |
|
2519 code = bibShowBits(11, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2520 if (bibError && (bibError != ERR_BIB_NOT_ENOUGH_DATA)) { |
|
2521 return VDX_ERR_BIB; |
|
2522 } |
|
2523 |
|
2524 if ((bibError == ERR_BIB_NOT_ENOUGH_DATA) && (numBitsGot != 0)) { |
|
2525 code <<= (11-numBitsGot); |
|
2526 bibError = 0; |
|
2527 } |
|
2528 |
|
2529 if ( code == 1) |
|
2530 { |
|
2531 *IntraDCSize = 12; |
|
2532 bibFlushBits(11, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2533 goto exitFunction; |
|
2534 } |
|
2535 |
|
2536 code >>= 1; |
|
2537 if ( code == 1) |
|
2538 { |
|
2539 *IntraDCSize = 11; |
|
2540 bibFlushBits(10, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2541 goto exitFunction; |
|
2542 } |
|
2543 |
|
2544 code >>= 1; |
|
2545 if ( code == 1) |
|
2546 { |
|
2547 *IntraDCSize = 10; |
|
2548 bibFlushBits(9, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2549 goto exitFunction; |
|
2550 } |
|
2551 |
|
2552 code >>= 1; |
|
2553 if ( code == 1) |
|
2554 { |
|
2555 *IntraDCSize = 9; |
|
2556 bibFlushBits(8, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2557 goto exitFunction; |
|
2558 } |
|
2559 |
|
2560 code >>= 1; |
|
2561 if ( code == 1) |
|
2562 { |
|
2563 *IntraDCSize = 8; |
|
2564 bibFlushBits(7, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2565 goto exitFunction; |
|
2566 } |
|
2567 code >>= 1; |
|
2568 if ( code == 1) |
|
2569 { |
|
2570 *IntraDCSize = 7; |
|
2571 bibFlushBits(6, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2572 goto exitFunction; |
|
2573 } |
|
2574 code >>= 1; |
|
2575 if ( code == 1) |
|
2576 { |
|
2577 *IntraDCSize = 6; |
|
2578 bibFlushBits(5, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2579 goto exitFunction; |
|
2580 } |
|
2581 code >>= 1; |
|
2582 if ( code == 1) |
|
2583 { |
|
2584 *IntraDCSize = 5; |
|
2585 bibFlushBits(4, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2586 goto exitFunction; |
|
2587 } |
|
2588 code >>= 1; |
|
2589 if ( code == 1) |
|
2590 { |
|
2591 *IntraDCSize = 4; |
|
2592 bibFlushBits(3, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2593 goto exitFunction; |
|
2594 } else if (code == 2) { |
|
2595 *IntraDCSize = 3; |
|
2596 bibFlushBits(3, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2597 goto exitFunction; |
|
2598 } else if (code ==3) { |
|
2599 *IntraDCSize = 0; |
|
2600 bibFlushBits(3, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2601 goto exitFunction; |
|
2602 } |
|
2603 code >>= 1; |
|
2604 if ( code == 2) |
|
2605 { |
|
2606 *IntraDCSize = 2; |
|
2607 bibFlushBits(2, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2608 goto exitFunction; |
|
2609 } else if (code == 3) { |
|
2610 *IntraDCSize = 1; |
|
2611 bibFlushBits(2, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2612 goto exitFunction; |
|
2613 } |
|
2614 |
|
2615 } |
|
2616 else /* chrominance block */ |
|
2617 { |
|
2618 code = bibShowBits(12, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2619 if (bibError && (bibError != ERR_BIB_NOT_ENOUGH_DATA)) { |
|
2620 return VDX_ERR_BIB; |
|
2621 } |
|
2622 |
|
2623 if ((bibError == ERR_BIB_NOT_ENOUGH_DATA) && (numBitsGot != 0)) { |
|
2624 code <<= (12-numBitsGot); |
|
2625 bibError = 0; |
|
2626 } |
|
2627 |
|
2628 if ( code == 1) |
|
2629 { |
|
2630 *IntraDCSize = 12; |
|
2631 bibFlushBits(12, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2632 goto exitFunction; |
|
2633 } |
|
2634 |
|
2635 code >>= 1; |
|
2636 if ( code == 1) |
|
2637 { |
|
2638 *IntraDCSize = 11; |
|
2639 bibFlushBits(11, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2640 goto exitFunction; |
|
2641 } |
|
2642 |
|
2643 code >>= 1; |
|
2644 if ( code == 1) |
|
2645 { |
|
2646 *IntraDCSize = 10; |
|
2647 bibFlushBits(10, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2648 goto exitFunction; |
|
2649 } |
|
2650 |
|
2651 code >>= 1; |
|
2652 if ( code == 1) |
|
2653 { |
|
2654 *IntraDCSize = 9; |
|
2655 bibFlushBits(9, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2656 goto exitFunction; |
|
2657 } |
|
2658 |
|
2659 code >>= 1; |
|
2660 if ( code == 1) |
|
2661 { |
|
2662 *IntraDCSize = 8; |
|
2663 bibFlushBits(8, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2664 goto exitFunction; |
|
2665 } |
|
2666 code >>= 1; |
|
2667 if ( code == 1) |
|
2668 { |
|
2669 *IntraDCSize = 7; |
|
2670 bibFlushBits(7, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2671 goto exitFunction; |
|
2672 } |
|
2673 code >>= 1; |
|
2674 if ( code == 1) |
|
2675 { |
|
2676 *IntraDCSize = 6; |
|
2677 bibFlushBits(6, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2678 goto exitFunction; |
|
2679 } |
|
2680 code >>= 1; |
|
2681 if ( code == 1) |
|
2682 { |
|
2683 *IntraDCSize = 5; |
|
2684 bibFlushBits(5, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2685 goto exitFunction; |
|
2686 } |
|
2687 code >>= 1; |
|
2688 if ( code == 1) |
|
2689 { |
|
2690 *IntraDCSize = 4; |
|
2691 bibFlushBits(4, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2692 goto exitFunction; |
|
2693 } |
|
2694 code >>= 1; |
|
2695 if ( code == 1) |
|
2696 { |
|
2697 *IntraDCSize = 3; |
|
2698 bibFlushBits(3, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2699 goto exitFunction; |
|
2700 } |
|
2701 code >>= 1; |
|
2702 { |
|
2703 *IntraDCSize = 3-code; |
|
2704 bibFlushBits(2, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
2705 goto exitFunction; |
|
2706 } |
|
2707 } |
|
2708 |
|
2709 exitFunction: |
|
2710 |
|
2711 /* If no error in bit buffer functions */ |
|
2712 if (!bibError) |
|
2713 return retValue; |
|
2714 |
|
2715 /* Else if ran out of data (i.e. decoding out of sync) */ |
|
2716 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
2717 return VDX_OK_BUT_BIT_ERROR; |
|
2718 } |
|
2719 |
|
2720 /* Else other error in bit buffer functions */ |
|
2721 else |
|
2722 return VDX_ERR_BIB; |
|
2723 } |
|
2724 |
|
2725 /* |
|
2726 * vdxGetRVLCIndex |
|
2727 * |
|
2728 * |
|
2729 * Parameters: |
|
2730 * bits input: the bits read from the stream |
|
2731 * index output: the RVLC table index corresponding |
|
2732 * to "bits" |
|
2733 * length output: length of the codeword |
|
2734 * intra_luma indicates an intra "1" or inter "0" Block |
|
2735 * bitErrorIndication non-zero if a bit error has been detected |
|
2736 * within the bits accessed in this function, |
|
2737 * see biterr.h for possible values |
|
2738 * |
|
2739 * Function: |
|
2740 * This function finds the RVLC table index (LAST,RUN.LEVEL) and length |
|
2741 * of the code belonging to the input codeword. |
|
2742 * |
|
2743 * Returns: |
|
2744 * VDX_OK the function was successful |
|
2745 * VDX_OK_BUT_BIT_ERROR no such codeword exists in the table |
|
2746 * |
|
2747 * |
|
2748 */ |
|
2749 |
|
2750 int vdxGetRVLCIndex( |
|
2751 u_int32 bits, |
|
2752 u_int32 *index, |
|
2753 int *length, |
|
2754 int intra_luma, |
|
2755 int *bitErrorIndication) |
|
2756 { |
|
2757 |
|
2758 /* The indexes in the RVLC tables are written in equal RUN groups with |
|
2759 LEVEL increasing */ |
|
2760 |
|
2761 /* Intra RVLC table */ |
|
2762 static const vdxVLCTable_t RvlcTcoefTab0[] = { |
|
2763 /* [0] --> e.g.: RUN = 0; LEVEL = 1..27 */ |
|
2764 {1,3}, {2,3}, {3,4}, {4,5}, {5,6}, {6,6}, {7,7}, {8,8}, |
|
2765 {9,8}, {10,9}, {11,9}, {12,10}, {13,10}, {14,10}, {15,11}, {16,11}, |
|
2766 {17,11}, {18,12}, {19,12}, {20,13}, {21,13}, {22,12}, {23,13}, {24,14}, |
|
2767 {25,14}, {26,14}, {27,15}, |
|
2768 /* [27] */ |
|
2769 {257,4}, {258,5}, {259,7}, {260,8}, {261,8}, {262,9},{263,10},{264,11}, |
|
2770 {265,11},{266,12},{267,13},{268,14},{269,14}, |
|
2771 /* [40] */ |
|
2772 {513,5}, {514,7}, {515,9},{516,10},{517,11},{518,11},{519,13},{520,13}, |
|
2773 {521,13},{522,14},{523,14}, |
|
2774 /* [51] */ |
|
2775 {769,5}, {770,8}, {771,9},{772,11},{773,12},{774,13},{775,14},{776,14}, |
|
2776 {777,15}, |
|
2777 /* [60] */ |
|
2778 {1025,6},{1026,8},{1027,10},{1028,12},{1029,12},{1030,14}, |
|
2779 /* [66] */ |
|
2780 {1281,6},{1282,9},{1283,11},{1284,12},{1285,14},{1286,14}, |
|
2781 /* [72] */ |
|
2782 {1537,7},{1538,10},{1539,11},{1540,12},{1541,15}, |
|
2783 /* [77] */ |
|
2784 {1793,7},{1794,10},{1795,11},{1796,13},{1797,15}, |
|
2785 /* [82] */ |
|
2786 {2049,8},{2050,10},{2051,13},{2052,14}, |
|
2787 /* [86] */ |
|
2788 {2305,8},{2306,11},{2307,13},{2308,15}, |
|
2789 /* [90] */ |
|
2790 {2561,9},{2562,12}, |
|
2791 /* [92] */ |
|
2792 {2817,10},{2818,13}, |
|
2793 /* [94] */ |
|
2794 {3073,10},{3074,15}, |
|
2795 /* [96] */ |
|
2796 {3329,11}, |
|
2797 {3585,13}, |
|
2798 {3841,13}, |
|
2799 {4097,14}, |
|
2800 {4353,14}, |
|
2801 {4609,14}, |
|
2802 {4865,15}, |
|
2803 |
|
2804 /* [103] --> LAST = 1 */ |
|
2805 {65537,4},{65538,8},{65539,11},{65540,13},{65541,14}, |
|
2806 /* [108] */ |
|
2807 {65793,5},{65794,9},{65795,12},{65796,14},{65797,15}, |
|
2808 /* [113] */ |
|
2809 {66049,5},{66050,11},{66051,15}, |
|
2810 /* [116] */ |
|
2811 {66305,6},{66306,12}, |
|
2812 /* [118] */ |
|
2813 {66561,6},{66562,12}, |
|
2814 /* [120] */ |
|
2815 {66817,6},{66818,13}, |
|
2816 /* [122] */ |
|
2817 {67073,6},{67074,13}, |
|
2818 /* [124] */ |
|
2819 {67329,7},{67330,13}, |
|
2820 /* [126] */ |
|
2821 {67585,7},{67586,13}, |
|
2822 /* [128] */ |
|
2823 {67841,7},{67842,13}, |
|
2824 /* [130] */ |
|
2825 {68097,7},{68098,14}, |
|
2826 /* [132] */ |
|
2827 {68353,7},{68354,14}, |
|
2828 /* [134] */ |
|
2829 {68609,8},{68610,14}, |
|
2830 /* [136] */ |
|
2831 {68865,8},{68866,15}, |
|
2832 /* [138] */ |
|
2833 {69121,8}, |
|
2834 {69377,9}, |
|
2835 {69633,9}, |
|
2836 {69889,9}, |
|
2837 {70145,9}, |
|
2838 {70401,9}, |
|
2839 {70657,9}, |
|
2840 {70913,10}, |
|
2841 {71169,10}, |
|
2842 {71425,10}, |
|
2843 {71681,10}, |
|
2844 {71937,10}, |
|
2845 {72193,11}, |
|
2846 {72449,11}, |
|
2847 {72705,11}, |
|
2848 {72961,12}, |
|
2849 {73217,12}, |
|
2850 {73473,12}, |
|
2851 {73729,12}, |
|
2852 {73985,12}, |
|
2853 {74241,12}, |
|
2854 {74497,12}, |
|
2855 {74753,13}, |
|
2856 {75009,13}, |
|
2857 {75265,14}, |
|
2858 {75521,14}, |
|
2859 {75777,14}, |
|
2860 {76033,15}, |
|
2861 {76289,15}, |
|
2862 {76545,15}, |
|
2863 {76801,15}, |
|
2864 |
|
2865 /* [169] */ |
|
2866 {7167,4} /* last entry: escape code */ |
|
2867 |
|
2868 }; |
|
2869 |
|
2870 /* Inter RVLC table */ |
|
2871 static const vdxVLCTable_t RvlcTcoefTab1[] = { |
|
2872 /* [0] */ |
|
2873 {1,3}, {2,4}, {3,5}, {4,7}, {5,8}, {6,8}, {7,9}, {8,10}, |
|
2874 {9,10}, {10,11}, {11,11}, {12,12}, {13,13}, {14,13}, {15,13}, {16,13}, |
|
2875 {17,14}, {18,14}, {19,15}, |
|
2876 /* [19] */ |
|
2877 {257,3}, {258,6}, {259,8}, {260,9},{261,10},{262,11},{263,12},{264,13}, |
|
2878 {265,14},{266,14}, |
|
2879 /* [29] */ |
|
2880 {513,4}, {514,7}, {515,9},{516,11},{517,12},{518,14},{519,14}, |
|
2881 /* [36] */ |
|
2882 {769,5}, {770,8},{771,10},{772,12},{773,13},{774,14},{775,15}, |
|
2883 /* [43] */ |
|
2884 {1025,5},{1026,8},{1027,11},{1028,13},{1029,15}, |
|
2885 /* [48] */ |
|
2886 {1281,5},{1282,9},{1283,11},{1284,13}, |
|
2887 /* [52] */ |
|
2888 {1537,6},{1538,10},{1539,12},{1540,14}, |
|
2889 /* [56] */ |
|
2890 {1793,6},{1794,10},{1795,12},{1796,15}, |
|
2891 /* [60] */ |
|
2892 {2049,6},{2050,10},{2051,13}, |
|
2893 /* [63] */ |
|
2894 {2305,7},{2306,10},{2307,14}, |
|
2895 /* [66] */ |
|
2896 {2561,7},{2562,11}, |
|
2897 /* [68] */ |
|
2898 {2817,7},{2818,12}, |
|
2899 /* [70] */ |
|
2900 {3073,8},{3074,13}, |
|
2901 /* [72] */ |
|
2902 {3329,8},{3330,14}, |
|
2903 /* [74] */ |
|
2904 {3585,8},{3586,14}, |
|
2905 /* [76] */ |
|
2906 {3841,9},{3842,14}, |
|
2907 /* [78] */ |
|
2908 {4097,9},{4098,14}, |
|
2909 /* [80] */ |
|
2910 {4353,9},{4354,15}, |
|
2911 /* [82] */ |
|
2912 {4609,10}, |
|
2913 {4865,10}, |
|
2914 {5121,10}, |
|
2915 {5377,11}, |
|
2916 {5633,11}, |
|
2917 {5889,11}, |
|
2918 {6145,11}, |
|
2919 {6401,11}, |
|
2920 {6657,11}, |
|
2921 {6913,12}, |
|
2922 {7169,12}, |
|
2923 {7425,12}, |
|
2924 {7681,13}, |
|
2925 {7937,13}, |
|
2926 {8193,13}, |
|
2927 {8449,13}, |
|
2928 {8705,14}, |
|
2929 {8961,14}, |
|
2930 {9217,14}, |
|
2931 {9473,15}, |
|
2932 {9729,15}, |
|
2933 |
|
2934 /* [103] --> LAST = 1 */ |
|
2935 {65537,4},{65538,8},{65539,11},{65540,13},{65541,14}, |
|
2936 /* [108] */ |
|
2937 {65793,5},{65794,9},{65795,12},{65796,14},{65797,15}, |
|
2938 /* [113] */ |
|
2939 {66049,5},{66050,11},{66051,15}, |
|
2940 /* [116] */ |
|
2941 {66305,6},{66306,12}, |
|
2942 /* [118] */ |
|
2943 {66561,6},{66562,12}, |
|
2944 /* [120] */ |
|
2945 {66817,6},{66818,13}, |
|
2946 /* [122] */ |
|
2947 {67073,6},{67074,13}, |
|
2948 /* [124] */ |
|
2949 {67329,7},{67330,13}, |
|
2950 /* [126] */ |
|
2951 {67585,7},{67586,13}, |
|
2952 /* [128] */ |
|
2953 {67841,7},{67842,13}, |
|
2954 /* [130] */ |
|
2955 {68097,7},{68098,14}, |
|
2956 /* [132] */ |
|
2957 {68353,7},{68354,14}, |
|
2958 /* [134] */ |
|
2959 {68609,8},{68610,14}, |
|
2960 /* [136] */ |
|
2961 {68865,8},{68866,15}, |
|
2962 /* [138] */ |
|
2963 {69121,8}, |
|
2964 {69377,9}, |
|
2965 {69633,9}, |
|
2966 {69889,9}, |
|
2967 {70145,9}, |
|
2968 {70401,9}, |
|
2969 {70657,9}, |
|
2970 {70913,10}, |
|
2971 {71169,10}, |
|
2972 {71425,10}, |
|
2973 {71681,10}, |
|
2974 {71937,10}, |
|
2975 {72193,11}, |
|
2976 {72449,11}, |
|
2977 {72705,11}, |
|
2978 {72961,12}, |
|
2979 {73217,12}, |
|
2980 {73473,12}, |
|
2981 {73729,12}, |
|
2982 {73985,12}, |
|
2983 {74241,12}, |
|
2984 {74497,12}, |
|
2985 {74753,13}, |
|
2986 {75009,13}, |
|
2987 {75265,14}, |
|
2988 {75521,14}, |
|
2989 {75777,14}, |
|
2990 {76033,15}, |
|
2991 {76289,15}, |
|
2992 {76545,15}, |
|
2993 {76801,15}, |
|
2994 |
|
2995 /* [169] */ |
|
2996 {7167,4} /* last entry: escape code */ |
|
2997 }; |
|
2998 |
|
2999 vdxVLCTable_t const *tab; /* pointer to lookup table */ |
|
3000 |
|
3001 vdxAssert(bitErrorIndication != NULL); |
|
3002 |
|
3003 switch(bits) { |
|
3004 |
|
3005 case 0x0: |
|
3006 if (intra_luma) |
|
3007 tab = &RvlcTcoefTab0[169]; |
|
3008 else |
|
3009 tab = &RvlcTcoefTab1[169]; |
|
3010 break; |
|
3011 |
|
3012 case 0x1: |
|
3013 if (intra_luma) |
|
3014 tab = &RvlcTcoefTab0[27]; |
|
3015 else |
|
3016 tab = &RvlcTcoefTab1[1]; |
|
3017 break; |
|
3018 |
|
3019 case 0x4: |
|
3020 if (intra_luma) |
|
3021 tab = &RvlcTcoefTab0[40]; |
|
3022 else |
|
3023 tab = &RvlcTcoefTab1[2]; |
|
3024 break; |
|
3025 |
|
3026 case 0x5: |
|
3027 if (intra_luma) |
|
3028 tab = &RvlcTcoefTab0[51]; |
|
3029 else |
|
3030 tab = &RvlcTcoefTab1[36]; |
|
3031 break; |
|
3032 |
|
3033 case 0x6: |
|
3034 if (intra_luma) |
|
3035 tab = &RvlcTcoefTab0[0]; |
|
3036 else |
|
3037 tab = &RvlcTcoefTab1[0]; |
|
3038 break; |
|
3039 |
|
3040 case 0x7: |
|
3041 if (intra_luma) |
|
3042 tab = &RvlcTcoefTab0[1]; |
|
3043 else |
|
3044 tab = &RvlcTcoefTab1[19]; |
|
3045 break; |
|
3046 |
|
3047 case 0x8: |
|
3048 if (intra_luma) |
|
3049 tab = &RvlcTcoefTab0[28]; |
|
3050 else |
|
3051 tab = &RvlcTcoefTab1[43]; |
|
3052 break; |
|
3053 |
|
3054 case 0x9: |
|
3055 if (intra_luma) |
|
3056 tab = &RvlcTcoefTab0[3]; |
|
3057 else |
|
3058 tab = &RvlcTcoefTab1[48]; |
|
3059 break; |
|
3060 |
|
3061 case 0xa: |
|
3062 if (intra_luma) |
|
3063 tab = &RvlcTcoefTab0[2]; |
|
3064 else |
|
3065 tab = &RvlcTcoefTab1[29]; |
|
3066 break; |
|
3067 |
|
3068 case 0xb: |
|
3069 if (intra_luma) |
|
3070 tab = &RvlcTcoefTab0[103]; |
|
3071 else |
|
3072 tab = &RvlcTcoefTab1[103]; |
|
3073 break; |
|
3074 |
|
3075 case 0xc: |
|
3076 if (intra_luma) |
|
3077 tab = &RvlcTcoefTab0[60]; |
|
3078 else |
|
3079 tab = &RvlcTcoefTab1[20]; |
|
3080 break; |
|
3081 |
|
3082 case 0xd: |
|
3083 if (intra_luma) |
|
3084 tab = &RvlcTcoefTab0[66]; |
|
3085 else |
|
3086 tab = &RvlcTcoefTab1[52]; |
|
3087 break; |
|
3088 |
|
3089 case 0x12: |
|
3090 if (intra_luma) |
|
3091 tab = &RvlcTcoefTab0[108]; |
|
3092 else |
|
3093 tab = &RvlcTcoefTab1[108]; |
|
3094 break; |
|
3095 |
|
3096 case 0x13: |
|
3097 if (intra_luma) |
|
3098 tab = &RvlcTcoefTab0[113]; |
|
3099 else |
|
3100 tab = &RvlcTcoefTab1[113]; |
|
3101 break; |
|
3102 |
|
3103 case 0x14: |
|
3104 if (intra_luma) |
|
3105 tab = &RvlcTcoefTab0[4]; |
|
3106 else |
|
3107 tab = &RvlcTcoefTab1[56]; |
|
3108 break; |
|
3109 |
|
3110 case 0x15: |
|
3111 if (intra_luma) |
|
3112 tab = &RvlcTcoefTab0[5]; |
|
3113 else |
|
3114 tab = &RvlcTcoefTab1[60]; |
|
3115 break; |
|
3116 |
|
3117 case 0x18: |
|
3118 if (intra_luma) |
|
3119 tab = &RvlcTcoefTab0[116]; |
|
3120 else |
|
3121 tab = &RvlcTcoefTab1[116]; |
|
3122 break; |
|
3123 |
|
3124 case 0x19: |
|
3125 if (intra_luma) |
|
3126 tab = &RvlcTcoefTab0[118]; |
|
3127 else |
|
3128 tab = &RvlcTcoefTab1[118]; |
|
3129 break; |
|
3130 |
|
3131 case 0x1c: |
|
3132 if (intra_luma) |
|
3133 tab = &RvlcTcoefTab0[72]; |
|
3134 else |
|
3135 tab = &RvlcTcoefTab1[3]; |
|
3136 break; |
|
3137 |
|
3138 case 0x1d: |
|
3139 if (intra_luma) |
|
3140 tab = &RvlcTcoefTab0[77]; |
|
3141 else |
|
3142 tab = &RvlcTcoefTab1[30]; |
|
3143 break; |
|
3144 |
|
3145 case 0x22: |
|
3146 if (intra_luma) |
|
3147 tab = &RvlcTcoefTab0[120]; |
|
3148 else |
|
3149 tab = &RvlcTcoefTab1[120]; |
|
3150 break; |
|
3151 |
|
3152 case 0x23: |
|
3153 if (intra_luma) |
|
3154 tab = &RvlcTcoefTab0[122]; |
|
3155 else |
|
3156 tab = &RvlcTcoefTab1[122]; |
|
3157 break; |
|
3158 |
|
3159 case 0x2c: |
|
3160 if (intra_luma) |
|
3161 tab = &RvlcTcoefTab0[41]; |
|
3162 else |
|
3163 tab = &RvlcTcoefTab1[63]; |
|
3164 break; |
|
3165 |
|
3166 case 0x2d: |
|
3167 if (intra_luma) |
|
3168 tab = &RvlcTcoefTab0[29]; |
|
3169 else |
|
3170 tab = &RvlcTcoefTab1[66]; |
|
3171 break; |
|
3172 |
|
3173 case 0x34: |
|
3174 if (intra_luma) |
|
3175 tab = &RvlcTcoefTab0[6]; |
|
3176 else |
|
3177 tab = &RvlcTcoefTab1[68]; |
|
3178 break; |
|
3179 |
|
3180 case 0x35: |
|
3181 if (intra_luma) |
|
3182 tab = &RvlcTcoefTab0[124]; |
|
3183 else |
|
3184 tab = &RvlcTcoefTab1[124]; |
|
3185 break; |
|
3186 |
|
3187 case 0x38: |
|
3188 if (intra_luma) |
|
3189 tab = &RvlcTcoefTab0[126]; |
|
3190 else |
|
3191 tab = &RvlcTcoefTab1[126]; |
|
3192 break; |
|
3193 |
|
3194 case 0x39: |
|
3195 if (intra_luma) |
|
3196 tab = &RvlcTcoefTab0[128]; |
|
3197 else |
|
3198 tab = &RvlcTcoefTab1[128]; |
|
3199 break; |
|
3200 |
|
3201 case 0x3c: |
|
3202 if (intra_luma) |
|
3203 tab = &RvlcTcoefTab0[82]; |
|
3204 else |
|
3205 tab = &RvlcTcoefTab1[4]; |
|
3206 break; |
|
3207 |
|
3208 case 0x3d: |
|
3209 if (intra_luma) |
|
3210 tab = &RvlcTcoefTab0[86]; |
|
3211 else |
|
3212 tab = &RvlcTcoefTab1[5]; |
|
3213 break; |
|
3214 |
|
3215 case 0x42: |
|
3216 if (intra_luma) |
|
3217 tab = &RvlcTcoefTab0[130]; |
|
3218 else |
|
3219 tab = &RvlcTcoefTab1[130]; |
|
3220 break; |
|
3221 |
|
3222 case 0x43: |
|
3223 if (intra_luma) |
|
3224 tab = &RvlcTcoefTab0[132]; |
|
3225 else |
|
3226 tab = &RvlcTcoefTab1[132]; |
|
3227 break; |
|
3228 |
|
3229 case 0x5c: |
|
3230 if (intra_luma) |
|
3231 tab = &RvlcTcoefTab0[52]; |
|
3232 else |
|
3233 tab = &RvlcTcoefTab1[21]; |
|
3234 break; |
|
3235 |
|
3236 case 0x5d: |
|
3237 if (intra_luma) |
|
3238 tab = &RvlcTcoefTab0[61]; |
|
3239 else |
|
3240 tab = &RvlcTcoefTab1[37]; |
|
3241 break; |
|
3242 |
|
3243 case 0x6c: |
|
3244 if (intra_luma) |
|
3245 tab = &RvlcTcoefTab0[30]; |
|
3246 else |
|
3247 tab = &RvlcTcoefTab1[44]; |
|
3248 break; |
|
3249 |
|
3250 case 0x6d: |
|
3251 if (intra_luma) |
|
3252 tab = &RvlcTcoefTab0[31]; |
|
3253 else |
|
3254 tab = &RvlcTcoefTab1[70]; |
|
3255 break; |
|
3256 |
|
3257 case 0x74: |
|
3258 if (intra_luma) |
|
3259 tab = &RvlcTcoefTab0[7]; |
|
3260 else |
|
3261 tab = &RvlcTcoefTab1[72]; |
|
3262 break; |
|
3263 |
|
3264 case 0x75: |
|
3265 if (intra_luma) |
|
3266 tab = &RvlcTcoefTab0[8]; |
|
3267 else |
|
3268 tab = &RvlcTcoefTab1[74]; |
|
3269 break; |
|
3270 |
|
3271 case 0x78: |
|
3272 if (intra_luma) |
|
3273 tab = &RvlcTcoefTab0[104]; |
|
3274 else |
|
3275 tab = &RvlcTcoefTab1[104]; |
|
3276 break; |
|
3277 |
|
3278 case 0x79: |
|
3279 if (intra_luma) |
|
3280 tab = &RvlcTcoefTab0[134]; |
|
3281 else |
|
3282 tab = &RvlcTcoefTab1[134]; |
|
3283 break; |
|
3284 |
|
3285 case 0x7c: |
|
3286 if (intra_luma) |
|
3287 tab = &RvlcTcoefTab0[90]; |
|
3288 else |
|
3289 tab = &RvlcTcoefTab1[6]; |
|
3290 break; |
|
3291 |
|
3292 case 0x7d: |
|
3293 if (intra_luma) |
|
3294 tab = &RvlcTcoefTab0[67]; |
|
3295 else |
|
3296 tab = &RvlcTcoefTab1[22]; |
|
3297 break; |
|
3298 |
|
3299 case 0x82: |
|
3300 if (intra_luma) |
|
3301 tab = &RvlcTcoefTab0[136]; |
|
3302 else |
|
3303 tab = &RvlcTcoefTab1[136]; |
|
3304 break; |
|
3305 |
|
3306 case 0x83: |
|
3307 if (intra_luma) |
|
3308 tab = &RvlcTcoefTab0[138]; |
|
3309 else |
|
3310 tab = &RvlcTcoefTab1[138]; |
|
3311 break; |
|
3312 |
|
3313 case 0xbc: |
|
3314 if (intra_luma) |
|
3315 tab = &RvlcTcoefTab0[42]; |
|
3316 else |
|
3317 tab = &RvlcTcoefTab1[31]; |
|
3318 break; |
|
3319 |
|
3320 case 0xbd: |
|
3321 if (intra_luma) |
|
3322 tab = &RvlcTcoefTab0[53]; |
|
3323 else |
|
3324 tab = &RvlcTcoefTab1[49]; |
|
3325 break; |
|
3326 |
|
3327 case 0xdc: |
|
3328 if (intra_luma) |
|
3329 tab = &RvlcTcoefTab0[32]; |
|
3330 else |
|
3331 tab = &RvlcTcoefTab1[76]; |
|
3332 break; |
|
3333 |
|
3334 case 0xdd: |
|
3335 if (intra_luma) |
|
3336 tab = &RvlcTcoefTab0[9]; |
|
3337 else |
|
3338 tab = &RvlcTcoefTab1[78]; |
|
3339 break; |
|
3340 |
|
3341 case 0xec: |
|
3342 if (intra_luma) |
|
3343 tab = &RvlcTcoefTab0[10]; |
|
3344 else |
|
3345 tab = &RvlcTcoefTab1[80]; |
|
3346 break; |
|
3347 |
|
3348 case 0xed: |
|
3349 if (intra_luma) |
|
3350 tab = &RvlcTcoefTab0[109]; |
|
3351 else |
|
3352 tab = &RvlcTcoefTab1[109]; |
|
3353 break; |
|
3354 |
|
3355 case 0xf4: |
|
3356 if (intra_luma) |
|
3357 tab = &RvlcTcoefTab0[139]; |
|
3358 else |
|
3359 tab = &RvlcTcoefTab1[139]; |
|
3360 break; |
|
3361 |
|
3362 case 0xf5: |
|
3363 if (intra_luma) |
|
3364 tab = &RvlcTcoefTab0[140]; |
|
3365 else |
|
3366 tab = &RvlcTcoefTab1[140]; |
|
3367 break; |
|
3368 |
|
3369 case 0xf8: |
|
3370 if (intra_luma) |
|
3371 tab = &RvlcTcoefTab0[141]; |
|
3372 else |
|
3373 tab = &RvlcTcoefTab1[141]; |
|
3374 break; |
|
3375 |
|
3376 case 0xf9: |
|
3377 if (intra_luma) |
|
3378 tab = &RvlcTcoefTab0[142]; |
|
3379 else |
|
3380 tab = &RvlcTcoefTab1[142]; |
|
3381 break; |
|
3382 |
|
3383 case 0xfc: |
|
3384 if (intra_luma) |
|
3385 tab = &RvlcTcoefTab0[92]; |
|
3386 else |
|
3387 tab = &RvlcTcoefTab1[7]; |
|
3388 break; |
|
3389 |
|
3390 case 0xfd: |
|
3391 if (intra_luma) |
|
3392 tab = &RvlcTcoefTab0[94]; |
|
3393 else |
|
3394 tab = &RvlcTcoefTab1[8]; |
|
3395 break; |
|
3396 |
|
3397 case 0x102: |
|
3398 if (intra_luma) |
|
3399 tab = &RvlcTcoefTab0[143]; |
|
3400 else |
|
3401 tab = &RvlcTcoefTab1[143]; |
|
3402 break; |
|
3403 |
|
3404 case 0x103: |
|
3405 if (intra_luma) |
|
3406 tab = &RvlcTcoefTab0[144]; |
|
3407 else |
|
3408 tab = &RvlcTcoefTab1[144]; |
|
3409 break; |
|
3410 |
|
3411 case 0x17c: |
|
3412 if (intra_luma) |
|
3413 tab = &RvlcTcoefTab0[73]; |
|
3414 else |
|
3415 tab = &RvlcTcoefTab1[23]; |
|
3416 break; |
|
3417 |
|
3418 case 0x17d: |
|
3419 if (intra_luma) |
|
3420 tab = &RvlcTcoefTab0[78]; |
|
3421 else |
|
3422 tab = &RvlcTcoefTab1[38]; |
|
3423 break; |
|
3424 |
|
3425 case 0x1bc: |
|
3426 if (intra_luma) |
|
3427 tab = &RvlcTcoefTab0[83]; |
|
3428 else |
|
3429 tab = &RvlcTcoefTab1[53]; |
|
3430 break; |
|
3431 |
|
3432 case 0x1bd: |
|
3433 if (intra_luma) |
|
3434 tab = &RvlcTcoefTab0[62]; |
|
3435 else |
|
3436 tab = &RvlcTcoefTab1[57]; |
|
3437 break; |
|
3438 |
|
3439 case 0x1dc: |
|
3440 if (intra_luma) |
|
3441 tab = &RvlcTcoefTab0[43]; |
|
3442 else |
|
3443 tab = &RvlcTcoefTab1[61]; |
|
3444 break; |
|
3445 |
|
3446 case 0x1dd: |
|
3447 if (intra_luma) |
|
3448 tab = &RvlcTcoefTab0[33]; |
|
3449 else |
|
3450 tab = &RvlcTcoefTab1[64]; |
|
3451 break; |
|
3452 |
|
3453 case 0x1ec: |
|
3454 if (intra_luma) |
|
3455 tab = &RvlcTcoefTab0[11]; |
|
3456 else |
|
3457 tab = &RvlcTcoefTab1[82]; |
|
3458 break; |
|
3459 |
|
3460 case 0x1ed: |
|
3461 if (intra_luma) |
|
3462 tab = &RvlcTcoefTab0[12]; |
|
3463 else |
|
3464 tab = &RvlcTcoefTab1[83]; |
|
3465 break; |
|
3466 |
|
3467 case 0x1f4: |
|
3468 if (intra_luma) |
|
3469 tab = &RvlcTcoefTab0[13]; |
|
3470 else |
|
3471 tab = &RvlcTcoefTab1[84]; |
|
3472 break; |
|
3473 |
|
3474 case 0x1f5: |
|
3475 if (intra_luma) |
|
3476 tab = &RvlcTcoefTab0[145]; |
|
3477 else |
|
3478 tab = &RvlcTcoefTab1[145]; |
|
3479 break; |
|
3480 |
|
3481 case 0x1f8: |
|
3482 if (intra_luma) |
|
3483 tab = &RvlcTcoefTab0[146]; |
|
3484 else |
|
3485 tab = &RvlcTcoefTab1[146]; |
|
3486 break; |
|
3487 |
|
3488 case 0x1f9: |
|
3489 if (intra_luma) |
|
3490 tab = &RvlcTcoefTab0[147]; |
|
3491 else |
|
3492 tab = &RvlcTcoefTab1[147]; |
|
3493 break; |
|
3494 |
|
3495 case 0x1fc: |
|
3496 if (intra_luma) |
|
3497 tab = &RvlcTcoefTab0[96]; |
|
3498 else |
|
3499 tab = &RvlcTcoefTab1[9]; |
|
3500 break; |
|
3501 |
|
3502 case 0x1fd: |
|
3503 if (intra_luma) |
|
3504 tab = &RvlcTcoefTab0[87]; |
|
3505 else |
|
3506 tab = &RvlcTcoefTab1[10]; |
|
3507 break; |
|
3508 |
|
3509 case 0x202: |
|
3510 if (intra_luma) |
|
3511 tab = &RvlcTcoefTab0[148]; |
|
3512 else |
|
3513 tab = &RvlcTcoefTab1[148]; |
|
3514 break; |
|
3515 |
|
3516 case 0x203: |
|
3517 if (intra_luma) |
|
3518 tab = &RvlcTcoefTab0[149]; |
|
3519 else |
|
3520 tab = &RvlcTcoefTab1[149]; |
|
3521 break; |
|
3522 |
|
3523 case 0x2fc: |
|
3524 if (intra_luma) |
|
3525 tab = &RvlcTcoefTab0[68]; |
|
3526 else |
|
3527 tab = &RvlcTcoefTab1[24]; |
|
3528 break; |
|
3529 |
|
3530 case 0x2fd: |
|
3531 if (intra_luma) |
|
3532 tab = &RvlcTcoefTab0[74]; |
|
3533 else |
|
3534 tab = &RvlcTcoefTab1[32]; |
|
3535 break; |
|
3536 |
|
3537 case 0x37c: |
|
3538 if (intra_luma) |
|
3539 tab = &RvlcTcoefTab0[79]; |
|
3540 else |
|
3541 tab = &RvlcTcoefTab1[45]; |
|
3542 break; |
|
3543 |
|
3544 case 0x37d: |
|
3545 if (intra_luma) |
|
3546 tab = &RvlcTcoefTab0[54]; |
|
3547 else |
|
3548 tab = &RvlcTcoefTab1[50]; |
|
3549 break; |
|
3550 |
|
3551 case 0x3bc: |
|
3552 if (intra_luma) |
|
3553 tab = &RvlcTcoefTab0[44]; |
|
3554 else |
|
3555 tab = &RvlcTcoefTab1[67]; |
|
3556 break; |
|
3557 |
|
3558 case 0x3bd: |
|
3559 if (intra_luma) |
|
3560 tab = &RvlcTcoefTab0[45]; |
|
3561 else |
|
3562 tab = &RvlcTcoefTab1[85]; |
|
3563 break; |
|
3564 |
|
3565 case 0x3dc: |
|
3566 if (intra_luma) |
|
3567 tab = &RvlcTcoefTab0[34]; |
|
3568 else |
|
3569 tab = &RvlcTcoefTab1[86]; |
|
3570 break; |
|
3571 |
|
3572 case 0x3dd: |
|
3573 if (intra_luma) |
|
3574 tab = &RvlcTcoefTab0[35]; |
|
3575 else |
|
3576 tab = &RvlcTcoefTab1[87]; |
|
3577 break; |
|
3578 |
|
3579 case 0x3ec: |
|
3580 if (intra_luma) |
|
3581 tab = &RvlcTcoefTab0[14]; |
|
3582 else |
|
3583 tab = &RvlcTcoefTab1[88]; |
|
3584 break; |
|
3585 |
|
3586 case 0x3ed: |
|
3587 if (intra_luma) |
|
3588 tab = &RvlcTcoefTab0[15]; |
|
3589 else |
|
3590 tab = &RvlcTcoefTab1[89]; |
|
3591 break; |
|
3592 |
|
3593 case 0x3f4: |
|
3594 if (intra_luma) |
|
3595 tab = &RvlcTcoefTab0[16]; |
|
3596 else |
|
3597 tab = &RvlcTcoefTab1[90]; |
|
3598 break; |
|
3599 |
|
3600 case 0x3f5: |
|
3601 if (intra_luma) |
|
3602 tab = &RvlcTcoefTab0[105]; |
|
3603 else |
|
3604 tab = &RvlcTcoefTab1[105]; |
|
3605 break; |
|
3606 |
|
3607 case 0x3f8: |
|
3608 if (intra_luma) |
|
3609 tab = &RvlcTcoefTab0[114]; |
|
3610 else |
|
3611 tab = &RvlcTcoefTab1[114]; |
|
3612 break; |
|
3613 |
|
3614 case 0x3f9: |
|
3615 if (intra_luma) |
|
3616 tab = &RvlcTcoefTab0[150]; |
|
3617 else |
|
3618 tab = &RvlcTcoefTab1[150]; |
|
3619 break; |
|
3620 |
|
3621 case 0x3fc: |
|
3622 if (intra_luma) |
|
3623 tab = &RvlcTcoefTab0[91]; |
|
3624 else |
|
3625 tab = &RvlcTcoefTab1[11]; |
|
3626 break; |
|
3627 |
|
3628 case 0x3fd: |
|
3629 if (intra_luma) |
|
3630 tab = &RvlcTcoefTab0[63]; |
|
3631 else |
|
3632 tab = &RvlcTcoefTab1[25]; |
|
3633 break; |
|
3634 |
|
3635 case 0x402: |
|
3636 if (intra_luma) |
|
3637 tab = &RvlcTcoefTab0[151]; |
|
3638 else |
|
3639 tab = &RvlcTcoefTab1[151]; |
|
3640 break; |
|
3641 |
|
3642 case 0x403: |
|
3643 if (intra_luma) |
|
3644 tab = &RvlcTcoefTab0[152]; |
|
3645 else |
|
3646 tab = &RvlcTcoefTab1[152]; |
|
3647 break; |
|
3648 |
|
3649 case 0x5fc: |
|
3650 if (intra_luma) |
|
3651 tab = &RvlcTcoefTab0[69]; |
|
3652 else |
|
3653 tab = &RvlcTcoefTab1[33]; |
|
3654 break; |
|
3655 |
|
3656 case 0x5fd: |
|
3657 if (intra_luma) |
|
3658 tab = &RvlcTcoefTab0[75]; |
|
3659 else |
|
3660 tab = &RvlcTcoefTab1[39]; |
|
3661 break; |
|
3662 |
|
3663 case 0x6fc: |
|
3664 if (intra_luma) |
|
3665 tab = &RvlcTcoefTab0[55]; |
|
3666 else |
|
3667 tab = &RvlcTcoefTab1[54]; |
|
3668 break; |
|
3669 |
|
3670 case 0x6fd: |
|
3671 if (intra_luma) |
|
3672 tab = &RvlcTcoefTab0[64]; |
|
3673 else |
|
3674 tab = &RvlcTcoefTab1[58]; |
|
3675 break; |
|
3676 |
|
3677 case 0x77c: |
|
3678 if (intra_luma) |
|
3679 tab = &RvlcTcoefTab0[36]; |
|
3680 else |
|
3681 tab = &RvlcTcoefTab1[69]; |
|
3682 break; |
|
3683 |
|
3684 case 0x77d: |
|
3685 if (intra_luma) |
|
3686 tab = &RvlcTcoefTab0[17]; |
|
3687 else |
|
3688 tab = &RvlcTcoefTab1[91]; |
|
3689 break; |
|
3690 |
|
3691 case 0x7bc: |
|
3692 if (intra_luma) |
|
3693 tab = &RvlcTcoefTab0[18]; |
|
3694 else |
|
3695 tab = &RvlcTcoefTab1[92]; |
|
3696 break; |
|
3697 |
|
3698 case 0x7bd: |
|
3699 if (intra_luma) |
|
3700 tab = &RvlcTcoefTab0[21]; |
|
3701 else |
|
3702 tab = &RvlcTcoefTab1[93]; |
|
3703 break; |
|
3704 |
|
3705 case 0x7dc: |
|
3706 if (intra_luma) |
|
3707 tab = &RvlcTcoefTab0[110]; |
|
3708 else |
|
3709 tab = &RvlcTcoefTab1[110]; |
|
3710 break; |
|
3711 |
|
3712 case 0x7dd: |
|
3713 if (intra_luma) |
|
3714 tab = &RvlcTcoefTab0[117]; |
|
3715 else |
|
3716 tab = &RvlcTcoefTab1[117]; |
|
3717 break; |
|
3718 |
|
3719 case 0x7ec: |
|
3720 if (intra_luma) |
|
3721 tab = &RvlcTcoefTab0[119]; |
|
3722 else |
|
3723 tab = &RvlcTcoefTab1[119]; |
|
3724 break; |
|
3725 |
|
3726 case 0x7ed: |
|
3727 if (intra_luma) |
|
3728 tab = &RvlcTcoefTab0[153]; |
|
3729 else |
|
3730 tab = &RvlcTcoefTab1[153]; |
|
3731 break; |
|
3732 |
|
3733 case 0x7f4: |
|
3734 if (intra_luma) |
|
3735 tab = &RvlcTcoefTab0[154]; |
|
3736 else |
|
3737 tab = &RvlcTcoefTab1[154]; |
|
3738 break; |
|
3739 |
|
3740 case 0x7f5: |
|
3741 if (intra_luma) |
|
3742 tab = &RvlcTcoefTab0[155]; |
|
3743 else |
|
3744 tab = &RvlcTcoefTab1[155]; |
|
3745 break; |
|
3746 |
|
3747 case 0x7f8: |
|
3748 if (intra_luma) |
|
3749 tab = &RvlcTcoefTab0[156]; |
|
3750 else |
|
3751 tab = &RvlcTcoefTab1[156]; |
|
3752 break; |
|
3753 |
|
3754 case 0x7f9: |
|
3755 if (intra_luma) |
|
3756 tab = &RvlcTcoefTab0[157]; |
|
3757 else |
|
3758 tab = &RvlcTcoefTab1[157]; |
|
3759 break; |
|
3760 |
|
3761 case 0x7fc: |
|
3762 if (intra_luma) |
|
3763 tab = &RvlcTcoefTab0[97]; |
|
3764 else |
|
3765 tab = &RvlcTcoefTab1[12]; |
|
3766 break; |
|
3767 |
|
3768 case 0x7fd: |
|
3769 if (intra_luma) |
|
3770 tab = &RvlcTcoefTab0[98]; |
|
3771 else |
|
3772 tab = &RvlcTcoefTab1[13]; |
|
3773 break; |
|
3774 |
|
3775 case 0x802: |
|
3776 if (intra_luma) |
|
3777 tab = &RvlcTcoefTab0[158]; |
|
3778 else |
|
3779 tab = &RvlcTcoefTab1[158]; |
|
3780 break; |
|
3781 |
|
3782 case 0x803: |
|
3783 if (intra_luma) |
|
3784 tab = &RvlcTcoefTab0[159]; |
|
3785 else |
|
3786 tab = &RvlcTcoefTab1[159]; |
|
3787 break; |
|
3788 |
|
3789 case 0xbfc: |
|
3790 if (intra_luma) |
|
3791 tab = &RvlcTcoefTab0[93]; |
|
3792 else |
|
3793 tab = &RvlcTcoefTab1[14]; |
|
3794 break; |
|
3795 |
|
3796 case 0xbfd: |
|
3797 if (intra_luma) |
|
3798 tab = &RvlcTcoefTab0[84]; |
|
3799 else |
|
3800 tab = &RvlcTcoefTab1[15]; |
|
3801 break; |
|
3802 |
|
3803 case 0xdfc: |
|
3804 if (intra_luma) |
|
3805 tab = &RvlcTcoefTab0[88]; |
|
3806 else |
|
3807 tab = &RvlcTcoefTab1[26]; |
|
3808 break; |
|
3809 |
|
3810 case 0xdfd: |
|
3811 if (intra_luma) |
|
3812 tab = &RvlcTcoefTab0[80]; |
|
3813 else |
|
3814 tab = &RvlcTcoefTab1[40]; |
|
3815 break; |
|
3816 |
|
3817 case 0xefc: |
|
3818 if (intra_luma) |
|
3819 tab = &RvlcTcoefTab0[56]; |
|
3820 else |
|
3821 tab = &RvlcTcoefTab1[46]; |
|
3822 break; |
|
3823 |
|
3824 case 0xefd: |
|
3825 if (intra_luma) |
|
3826 tab = &RvlcTcoefTab0[46]; |
|
3827 else |
|
3828 tab = &RvlcTcoefTab1[51]; |
|
3829 break; |
|
3830 |
|
3831 case 0xf7c: |
|
3832 if (intra_luma) |
|
3833 tab = &RvlcTcoefTab0[47]; |
|
3834 else |
|
3835 tab = &RvlcTcoefTab1[62]; |
|
3836 break; |
|
3837 |
|
3838 case 0xf7d: |
|
3839 if (intra_luma) |
|
3840 tab = &RvlcTcoefTab0[48]; |
|
3841 else |
|
3842 tab = &RvlcTcoefTab1[71]; |
|
3843 break; |
|
3844 |
|
3845 case 0xfbc: |
|
3846 if (intra_luma) |
|
3847 tab = &RvlcTcoefTab0[37]; |
|
3848 else |
|
3849 tab = &RvlcTcoefTab1[94]; |
|
3850 break; |
|
3851 |
|
3852 case 0xfbd: |
|
3853 if (intra_luma) |
|
3854 tab = &RvlcTcoefTab0[19]; |
|
3855 else |
|
3856 tab = &RvlcTcoefTab1[95]; |
|
3857 break; |
|
3858 |
|
3859 case 0xfdc: |
|
3860 if (intra_luma) |
|
3861 tab = &RvlcTcoefTab0[20]; |
|
3862 else |
|
3863 tab = &RvlcTcoefTab1[96]; |
|
3864 break; |
|
3865 |
|
3866 case 0xfdd: |
|
3867 if (intra_luma) |
|
3868 tab = &RvlcTcoefTab0[22]; |
|
3869 else |
|
3870 tab = &RvlcTcoefTab1[97]; |
|
3871 break; |
|
3872 |
|
3873 case 0xfec: |
|
3874 if (intra_luma) |
|
3875 tab = &RvlcTcoefTab0[106]; |
|
3876 else |
|
3877 tab = &RvlcTcoefTab1[106]; |
|
3878 break; |
|
3879 |
|
3880 case 0xfed: |
|
3881 if (intra_luma) |
|
3882 tab = &RvlcTcoefTab0[121]; |
|
3883 else |
|
3884 tab = &RvlcTcoefTab1[121]; |
|
3885 break; |
|
3886 |
|
3887 case 0xff4: |
|
3888 if (intra_luma) |
|
3889 tab = &RvlcTcoefTab0[123]; |
|
3890 else |
|
3891 tab = &RvlcTcoefTab1[123]; |
|
3892 break; |
|
3893 |
|
3894 case 0xff5: |
|
3895 if (intra_luma) |
|
3896 tab = &RvlcTcoefTab0[125]; |
|
3897 else |
|
3898 tab = &RvlcTcoefTab1[125]; |
|
3899 break; |
|
3900 |
|
3901 case 0xff8: |
|
3902 if (intra_luma) |
|
3903 tab = &RvlcTcoefTab0[127]; |
|
3904 else |
|
3905 tab = &RvlcTcoefTab1[127]; |
|
3906 break; |
|
3907 |
|
3908 case 0xff9: |
|
3909 if (intra_luma) |
|
3910 tab = &RvlcTcoefTab0[129]; |
|
3911 else |
|
3912 tab = &RvlcTcoefTab1[129]; |
|
3913 break; |
|
3914 |
|
3915 case 0xffc: |
|
3916 if (intra_luma) |
|
3917 tab = &RvlcTcoefTab0[99]; |
|
3918 else |
|
3919 tab = &RvlcTcoefTab1[16]; |
|
3920 break; |
|
3921 |
|
3922 case 0xffd: |
|
3923 if (intra_luma) |
|
3924 tab = &RvlcTcoefTab0[100]; |
|
3925 else |
|
3926 tab = &RvlcTcoefTab1[17]; |
|
3927 break; |
|
3928 |
|
3929 case 0x1002: |
|
3930 if (intra_luma) |
|
3931 tab = &RvlcTcoefTab0[160]; |
|
3932 else |
|
3933 tab = &RvlcTcoefTab1[160]; |
|
3934 break; |
|
3935 |
|
3936 case 0x1003: |
|
3937 if (intra_luma) |
|
3938 tab = &RvlcTcoefTab0[161]; |
|
3939 else |
|
3940 tab = &RvlcTcoefTab1[161]; |
|
3941 break; |
|
3942 |
|
3943 case 0x17fc: |
|
3944 if (intra_luma) |
|
3945 tab = &RvlcTcoefTab0[101]; |
|
3946 else |
|
3947 tab = &RvlcTcoefTab1[27]; |
|
3948 break; |
|
3949 |
|
3950 case 0x17fd: |
|
3951 if (intra_luma) |
|
3952 tab = &RvlcTcoefTab0[85]; |
|
3953 else |
|
3954 tab = &RvlcTcoefTab1[28]; |
|
3955 break; |
|
3956 |
|
3957 case 0x1bfc: |
|
3958 if (intra_luma) |
|
3959 tab = &RvlcTcoefTab0[70]; |
|
3960 else |
|
3961 tab = &RvlcTcoefTab1[34]; |
|
3962 break; |
|
3963 |
|
3964 case 0x1bfd: |
|
3965 if (intra_luma) |
|
3966 tab = &RvlcTcoefTab0[65]; |
|
3967 else |
|
3968 tab = &RvlcTcoefTab1[35]; |
|
3969 break; |
|
3970 |
|
3971 case 0x1dfc: |
|
3972 if (intra_luma) |
|
3973 tab = &RvlcTcoefTab0[71]; |
|
3974 else |
|
3975 tab = &RvlcTcoefTab1[41]; |
|
3976 break; |
|
3977 |
|
3978 case 0x1dfd: |
|
3979 if (intra_luma) |
|
3980 tab = &RvlcTcoefTab0[57]; |
|
3981 else |
|
3982 tab = &RvlcTcoefTab1[55]; |
|
3983 break; |
|
3984 |
|
3985 case 0x1efc: |
|
3986 if (intra_luma) |
|
3987 tab = &RvlcTcoefTab0[58]; |
|
3988 else |
|
3989 tab = &RvlcTcoefTab1[65]; |
|
3990 break; |
|
3991 |
|
3992 case 0x1efd: |
|
3993 if (intra_luma) |
|
3994 tab = &RvlcTcoefTab0[49]; |
|
3995 else |
|
3996 tab = &RvlcTcoefTab1[73]; |
|
3997 break; |
|
3998 |
|
3999 case 0x1f7c: |
|
4000 if (intra_luma) |
|
4001 tab = &RvlcTcoefTab0[50]; |
|
4002 else |
|
4003 tab = &RvlcTcoefTab1[75]; |
|
4004 break; |
|
4005 |
|
4006 case 0x1f7d: |
|
4007 if (intra_luma) |
|
4008 tab = &RvlcTcoefTab0[38]; |
|
4009 else |
|
4010 tab = &RvlcTcoefTab1[77]; |
|
4011 break; |
|
4012 |
|
4013 case 0x1fbc: |
|
4014 if (intra_luma) |
|
4015 tab = &RvlcTcoefTab0[39]; |
|
4016 else |
|
4017 tab = &RvlcTcoefTab1[79]; |
|
4018 break; |
|
4019 |
|
4020 case 0x1fbd: |
|
4021 if (intra_luma) |
|
4022 tab = &RvlcTcoefTab0[23]; |
|
4023 else |
|
4024 tab = &RvlcTcoefTab1[98]; |
|
4025 break; |
|
4026 |
|
4027 case 0x1fdc: |
|
4028 if (intra_luma) |
|
4029 tab = &RvlcTcoefTab0[24]; |
|
4030 else |
|
4031 tab = &RvlcTcoefTab1[99]; |
|
4032 break; |
|
4033 |
|
4034 case 0x1fdd: |
|
4035 if (intra_luma) |
|
4036 tab = &RvlcTcoefTab0[25]; |
|
4037 else |
|
4038 tab = &RvlcTcoefTab1[100]; |
|
4039 break; |
|
4040 |
|
4041 case 0x1fec: |
|
4042 if (intra_luma) |
|
4043 tab = &RvlcTcoefTab0[107]; |
|
4044 else |
|
4045 tab = &RvlcTcoefTab1[107]; |
|
4046 break; |
|
4047 |
|
4048 case 0x1fed: |
|
4049 if (intra_luma) |
|
4050 tab = &RvlcTcoefTab0[111]; |
|
4051 else |
|
4052 tab = &RvlcTcoefTab1[111]; |
|
4053 break; |
|
4054 |
|
4055 case 0x1ff4: |
|
4056 if (intra_luma) |
|
4057 tab = &RvlcTcoefTab0[131]; |
|
4058 else |
|
4059 tab = &RvlcTcoefTab1[131]; |
|
4060 break; |
|
4061 |
|
4062 case 0x1ff5: |
|
4063 if (intra_luma) |
|
4064 tab = &RvlcTcoefTab0[133]; |
|
4065 else |
|
4066 tab = &RvlcTcoefTab1[133]; |
|
4067 break; |
|
4068 |
|
4069 case 0x1ff8: |
|
4070 if (intra_luma) |
|
4071 tab = &RvlcTcoefTab0[135]; |
|
4072 else |
|
4073 tab = &RvlcTcoefTab1[135]; |
|
4074 break; |
|
4075 |
|
4076 case 0x1ff9: |
|
4077 if (intra_luma) |
|
4078 tab = &RvlcTcoefTab0[162]; |
|
4079 else |
|
4080 tab = &RvlcTcoefTab1[162]; |
|
4081 break; |
|
4082 |
|
4083 case 0x1ffc: |
|
4084 if (intra_luma) |
|
4085 tab = &RvlcTcoefTab0[26]; |
|
4086 else |
|
4087 tab = &RvlcTcoefTab1[18]; |
|
4088 break; |
|
4089 |
|
4090 case 0x1ffd: |
|
4091 if (intra_luma) |
|
4092 tab = &RvlcTcoefTab0[59]; |
|
4093 else |
|
4094 tab = &RvlcTcoefTab1[42]; |
|
4095 break; |
|
4096 |
|
4097 case 0x2002: |
|
4098 if (intra_luma) |
|
4099 tab = &RvlcTcoefTab0[163]; |
|
4100 else |
|
4101 tab = &RvlcTcoefTab1[163]; |
|
4102 break; |
|
4103 |
|
4104 case 0x2003: |
|
4105 if (intra_luma) |
|
4106 tab = &RvlcTcoefTab0[164]; |
|
4107 else |
|
4108 tab = &RvlcTcoefTab1[164]; |
|
4109 break; |
|
4110 |
|
4111 case 0x2ffc: |
|
4112 if (intra_luma) |
|
4113 tab = &RvlcTcoefTab0[76]; |
|
4114 else |
|
4115 tab = &RvlcTcoefTab1[47]; |
|
4116 break; |
|
4117 |
|
4118 case 0x2ffd: |
|
4119 if (intra_luma) |
|
4120 tab = &RvlcTcoefTab0[81]; |
|
4121 else |
|
4122 tab = &RvlcTcoefTab1[59]; |
|
4123 break; |
|
4124 |
|
4125 case 0x37fc: |
|
4126 if (intra_luma) |
|
4127 tab = &RvlcTcoefTab0[89]; |
|
4128 else |
|
4129 tab = &RvlcTcoefTab1[81]; |
|
4130 break; |
|
4131 |
|
4132 case 0x37fd: |
|
4133 if (intra_luma) |
|
4134 tab = &RvlcTcoefTab0[95]; |
|
4135 else |
|
4136 tab = &RvlcTcoefTab1[101]; |
|
4137 break; |
|
4138 |
|
4139 case 0x3bfc: |
|
4140 if (intra_luma) |
|
4141 tab = &RvlcTcoefTab0[102]; |
|
4142 else |
|
4143 tab = &RvlcTcoefTab1[102]; |
|
4144 break; |
|
4145 |
|
4146 case 0x3bfd: |
|
4147 if (intra_luma) |
|
4148 tab = &RvlcTcoefTab0[112]; |
|
4149 else |
|
4150 tab = &RvlcTcoefTab1[112]; |
|
4151 break; |
|
4152 |
|
4153 case 0x3dfc: |
|
4154 if (intra_luma) |
|
4155 tab = &RvlcTcoefTab0[115]; |
|
4156 else |
|
4157 tab = &RvlcTcoefTab1[115]; |
|
4158 break; |
|
4159 |
|
4160 case 0x3dfd: |
|
4161 if (intra_luma) |
|
4162 tab = &RvlcTcoefTab0[137]; |
|
4163 else |
|
4164 tab = &RvlcTcoefTab1[137]; |
|
4165 break; |
|
4166 |
|
4167 case 0x3efc: |
|
4168 if (intra_luma) |
|
4169 tab = &RvlcTcoefTab0[165]; |
|
4170 else |
|
4171 tab = &RvlcTcoefTab1[165]; |
|
4172 break; |
|
4173 |
|
4174 case 0x3efd: |
|
4175 if (intra_luma) |
|
4176 tab = &RvlcTcoefTab0[166]; |
|
4177 else |
|
4178 tab = &RvlcTcoefTab1[166]; |
|
4179 break; |
|
4180 |
|
4181 case 0x3f7c: |
|
4182 if (intra_luma) |
|
4183 tab = &RvlcTcoefTab0[167]; |
|
4184 else |
|
4185 tab = &RvlcTcoefTab1[167]; |
|
4186 break; |
|
4187 |
|
4188 case 0x3f7d: |
|
4189 if (intra_luma) |
|
4190 tab = &RvlcTcoefTab0[168]; |
|
4191 else |
|
4192 tab = &RvlcTcoefTab1[168]; |
|
4193 break; |
|
4194 |
|
4195 default: |
|
4196 deb("ERROR - illegal RVLC TCOEF\n"); |
|
4197 return VDX_OK_BUT_BIT_ERROR; |
|
4198 } |
|
4199 |
|
4200 *index = tab->val; |
|
4201 *length = tab->len; |
|
4202 |
|
4203 return VDX_OK; |
|
4204 } |
|
4205 |
|
4206 /* |
|
4207 * vdxGetRVLCDCTBlock |
|
4208 * |
|
4209 * |
|
4210 * Parameters: |
|
4211 * inBuffer pointer to bit buffer instance |
|
4212 * startIndex the first index in block where to put data |
|
4213 * block array for block (length 64) |
|
4214 * fIntraBlock indicates an intra "1" or inter "0" Block |
|
4215 * bitErrorIndication non-zero if a bit error has been detected |
|
4216 * within the bits accessed in this function, |
|
4217 * see biterr.h for possible values |
|
4218 * |
|
4219 * Function: |
|
4220 * This function reads a block from bit buffer using Huffman codes listed |
|
4221 * in RVLC TCOEF table. The place, where the block is read is given as a |
|
4222 * pointer parameter. |
|
4223 * |
|
4224 * Returns: |
|
4225 * VDX_OK the function was successful |
|
4226 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
4227 * occured |
|
4228 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
4229 * |
|
4230 * |
|
4231 * |
|
4232 */ |
|
4233 |
|
4234 int vdxGetRVLCDCTBlock( |
|
4235 bibBuffer_t *inBuffer, |
|
4236 int startIndex, |
|
4237 int fIntraBlock, |
|
4238 int *block, |
|
4239 int *bitErrorIndication) |
|
4240 { |
|
4241 int numBitsGot, |
|
4242 retValue = VDX_OK, |
|
4243 index = startIndex, /* index to zigzag table running from 1 to 63 */ |
|
4244 tmpvar; |
|
4245 u_int32 |
|
4246 bits, |
|
4247 RVLCIndex = 0, |
|
4248 RVLCLength = 0; |
|
4249 int16 |
|
4250 bibError = 0; |
|
4251 |
|
4252 int run, /* RUN code */ |
|
4253 level; /* LEVEL code */ |
|
4254 u_int32 |
|
4255 last, /* LAST code (see standard) */ |
|
4256 sign; /* sign for level */ |
|
4257 |
|
4258 vdxAssert(inBuffer != NULL); |
|
4259 vdxAssert(startIndex == 0 || startIndex == 1); |
|
4260 vdxAssert(block != NULL); |
|
4261 vdxAssert(bitErrorIndication != NULL); |
|
4262 |
|
4263 do { |
|
4264 |
|
4265 /* Read next codeword */ |
|
4266 bits = (int) bibShowBits(15, inBuffer, &numBitsGot, bitErrorIndication, |
|
4267 &bibError); |
|
4268 if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
4269 deb("vdxGetRVLCDCTBlock: bibShowBits returned not enough data --> " |
|
4270 "try to use the data available.\n"); |
|
4271 bits <<= (15 - numBitsGot); |
|
4272 bibError = 0; |
|
4273 } |
|
4274 else if (bibError ) { |
|
4275 deb("vdxGetRVLCDCTBlock: ERROR - bibShowBits failed.\n"); |
|
4276 goto exitFunction; |
|
4277 } |
|
4278 |
|
4279 /* Identifying the codeword in the read bits */ |
|
4280 { |
|
4281 int count, len = 1; |
|
4282 u_int32 mask = 0x4000; /* mask 100000000000000 */ |
|
4283 |
|
4284 if (bits & mask) { |
|
4285 count = 1; |
|
4286 for (len = 1; count > 0 && len < 15; len++) { |
|
4287 mask = mask >> 1; |
|
4288 if (bits & mask) |
|
4289 count--; |
|
4290 } |
|
4291 } else { |
|
4292 count = 2; |
|
4293 for (len = 1; count > 0 && len < 15; len++) { |
|
4294 mask = mask >> 1; |
|
4295 if (!(bits & mask)) |
|
4296 count--; |
|
4297 } |
|
4298 } |
|
4299 |
|
4300 if (len >= 15) { |
|
4301 deb("vdxGetRVLCDCTBlock:ERROR - illegal RVLC codeword.\n"); |
|
4302 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4303 goto exitFunction; |
|
4304 } |
|
4305 |
|
4306 bits = bits & 0x7fff; |
|
4307 bits = bits >> (15 - (len + 1)); |
|
4308 } |
|
4309 |
|
4310 /* Get the RVLC table Index and length belonging to the codeword */ |
|
4311 if (vdxGetRVLCIndex(bits, &RVLCIndex, (int *) &RVLCLength, fIntraBlock, bitErrorIndication) != VDX_OK) |
|
4312 goto exitFunction; |
|
4313 |
|
4314 /* Flush the codeword from the buffer */ |
|
4315 bibFlushBits(RVLCLength, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
4316 if (bibError) |
|
4317 goto exitFunction; |
|
4318 |
|
4319 if (RVLCIndex == 7167) /* ESCAPE */ |
|
4320 { |
|
4321 /* Flush the rest of the ESCAPE code from the buffer */ |
|
4322 bibFlushBits(1, inBuffer, &numBitsGot, bitErrorIndication, &bibError); |
|
4323 if (bibError) |
|
4324 goto exitFunction; |
|
4325 |
|
4326 /* LAST */ |
|
4327 last = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication, |
|
4328 &bibError); |
|
4329 if (bibError) |
|
4330 goto exitFunction; |
|
4331 /* RUN */ |
|
4332 run = (int) bibGetBits(6, inBuffer, &numBitsGot, bitErrorIndication, |
|
4333 &bibError); |
|
4334 if (bibError) |
|
4335 goto exitFunction; |
|
4336 /* MARKER BIT */ |
|
4337 tmpvar = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication,&bibError); |
|
4338 if (bibError) |
|
4339 goto exitFunction; |
|
4340 if (!tmpvar) { |
|
4341 deb("vdxGetRVLCDCTBlock:ERROR - Wrong marker bit.\n"); |
|
4342 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4343 goto exitFunction; |
|
4344 } |
|
4345 /* LEVEL */ |
|
4346 level = (int) bibGetBits(11, inBuffer, &numBitsGot, bitErrorIndication, |
|
4347 &bibError); |
|
4348 if (bibError) |
|
4349 goto exitFunction; |
|
4350 if (level == 0) { |
|
4351 deb("vdxGetRVLCDCTBlock:ERROR - Escape level invalid.\n"); |
|
4352 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4353 goto exitFunction; |
|
4354 } |
|
4355 /* MARKER BIT */ |
|
4356 tmpvar = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication,&bibError); |
|
4357 if (bibError) |
|
4358 goto exitFunction; |
|
4359 if (!tmpvar) { |
|
4360 deb("vdxGetRVLCDCTBlock:ERROR - Wrong marker bit.\n"); |
|
4361 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4362 goto exitFunction; |
|
4363 } |
|
4364 /* SIGN */ |
|
4365 sign = bibGetBits(5, inBuffer, &numBitsGot, bitErrorIndication, |
|
4366 &bibError); |
|
4367 if (bibError) |
|
4368 goto exitFunction; |
|
4369 |
|
4370 if (sign == 1) { |
|
4371 level = -level; |
|
4372 } else if (sign != 0) { |
|
4373 deb("vdxGetRVLCDCTBlock:ERROR - illegal sign.\n"); |
|
4374 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4375 goto exitFunction; |
|
4376 } |
|
4377 |
|
4378 } else { |
|
4379 |
|
4380 last = (RVLCIndex >> 16) & 1; |
|
4381 run = (RVLCIndex >> 8) & 255; |
|
4382 level = RVLCIndex & 255; |
|
4383 |
|
4384 sign = bibGetBits(1, inBuffer, &numBitsGot, bitErrorIndication, |
|
4385 &bibError); |
|
4386 if (bibError) |
|
4387 goto exitFunction; |
|
4388 |
|
4389 if (sign) |
|
4390 level = -level; |
|
4391 } |
|
4392 |
|
4393 /* If too many coefficients */ |
|
4394 if (index + run > 63) { |
|
4395 deb("vdxGetRVLCDCTBlock:ERROR - too many TCOEFs.\n"); |
|
4396 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4397 goto exitFunction; |
|
4398 } |
|
4399 |
|
4400 /* Do run-length decoding */ |
|
4401 while (run--) |
|
4402 block[index++] = 0; |
|
4403 |
|
4404 block[index++] = level; |
|
4405 |
|
4406 } while (!last); |
|
4407 |
|
4408 exitFunction: |
|
4409 |
|
4410 /* Set the rest of the coefficients to zero */ |
|
4411 while (index <= 63) { |
|
4412 block[index++] = 0; |
|
4413 } |
|
4414 |
|
4415 if (!bibError) |
|
4416 return retValue; |
|
4417 |
|
4418 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
4419 return VDX_OK_BUT_BIT_ERROR; |
|
4420 } |
|
4421 |
|
4422 else |
|
4423 return VDX_ERR_BIB; |
|
4424 } |
|
4425 |
|
4426 /* |
|
4427 * vdxGetRVLCDCTBlockBackwards |
|
4428 * |
|
4429 * |
|
4430 * Parameters: |
|
4431 * inBuffer pointer to bit buffer instance |
|
4432 * startIndex the first index in block where to put data |
|
4433 * fIntraBlock indicates an intra "1" or inter "0" Block |
|
4434 * BitPosBeforeRVLC bit position of inBuffer before the RVLC block, |
|
4435 * indicates the point to stop decoding backwards |
|
4436 * block array for block (length 64) |
|
4437 * bitErrorIndication non-zero if a bit error has been detected |
|
4438 * within the bits accessed in this function, |
|
4439 * see biterr.h for possible values |
|
4440 * |
|
4441 * Function: |
|
4442 * This function reads a block in backwards direction from the bit buffer |
|
4443 * using Huffman codes listed in RVLC TCOEF table. The bit position of the |
|
4444 * buffer at return from the function is where the DCT data of the current |
|
4445 * block starts. |
|
4446 * |
|
4447 * Returns: |
|
4448 * VDX_OK the function was successful |
|
4449 * VDX_OK_BUT_BIT_ERROR the function behaved normally, but a bit error |
|
4450 * occured |
|
4451 * VDX_ERR_BIB an error occured when accessing bit buffer |
|
4452 * |
|
4453 * |
|
4454 * |
|
4455 */ |
|
4456 |
|
4457 int vdxGetRVLCDCTBlockBackwards( |
|
4458 bibBuffer_t *inBuffer, |
|
4459 int startIndex, |
|
4460 int fIntraBlock, |
|
4461 // u_int32 BitPosBeforeRVLC, |
|
4462 int *block, |
|
4463 int *bitErrorIndication) |
|
4464 { |
|
4465 int numBitsGot, |
|
4466 retValue = VDX_OK, |
|
4467 index = 63; /* index to zigzag table running from 1 to 63 */ |
|
4468 u_int32 |
|
4469 bits, |
|
4470 RVLCIndex = 0, |
|
4471 RVLCLength = 0; |
|
4472 int16 |
|
4473 bibError = 0; |
|
4474 |
|
4475 int run, /* RUN code */ |
|
4476 level; /* LEVEL code */ |
|
4477 u_int32 |
|
4478 last, /* LAST code (see standard) */ |
|
4479 sign, /* sign for level */ |
|
4480 escape; |
|
4481 |
|
4482 vdxAssert(inBuffer != NULL); |
|
4483 vdxAssert(startIndex == 0 || startIndex == 1); |
|
4484 vdxAssert(block != NULL); |
|
4485 vdxAssert(bitErrorIndication != NULL); |
|
4486 |
|
4487 do { |
|
4488 /* SIGN */ |
|
4489 bibRewindBits(1, inBuffer, &bibError); |
|
4490 if (bibError) |
|
4491 goto exitFunction; |
|
4492 sign = bibShowBits(1, inBuffer, &numBitsGot, bitErrorIndication, |
|
4493 &bibError); |
|
4494 if (bibError) { |
|
4495 goto exitFunction; |
|
4496 } |
|
4497 |
|
4498 /* Read next codeword */ |
|
4499 bibRewindBits(15, inBuffer, &bibError); |
|
4500 if (bibError) |
|
4501 goto exitFunction; |
|
4502 bits = (int) bibGetBits(15, inBuffer, &numBitsGot, bitErrorIndication, |
|
4503 &bibError); |
|
4504 if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
4505 deb("vdxGetRVLCDCTBlockBackwards: bibShowBits returned not enough data --> " |
|
4506 "try to use the data available.\n"); |
|
4507 bits <<= (15 - numBitsGot); |
|
4508 bibError = 0; |
|
4509 } |
|
4510 else if (bibError) { |
|
4511 deb("vdxGetRVLCDCTBlockBackwards: ERROR - bibGetBits failed.\n"); |
|
4512 goto exitFunction; |
|
4513 } |
|
4514 |
|
4515 /* Identifying the codeword in the read bits */ |
|
4516 { |
|
4517 int count, len = 1; |
|
4518 u_int32 mask = 2; /* mask 000000000000010 */ |
|
4519 |
|
4520 if (bits & mask) { |
|
4521 count = 1; |
|
4522 for (len = 1; count > 0 && len < 15; len++) { |
|
4523 mask = mask << 1; |
|
4524 if (bits & mask) |
|
4525 count--; |
|
4526 } |
|
4527 } else { |
|
4528 count = 2; |
|
4529 for (len = 1; count > 0 && len < 15; len++) { |
|
4530 mask = mask << 1; |
|
4531 if (!(bits & mask)) |
|
4532 count--; |
|
4533 } |
|
4534 } |
|
4535 |
|
4536 if (len >= 15) { |
|
4537 deb("vdxGetRVLCDCTBlockBackwards:ERROR - illegal RVLC codeword.\n"); |
|
4538 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4539 goto exitFunction; |
|
4540 } |
|
4541 |
|
4542 bits = bits & (0x7fff >> (15 - (len + 1))); |
|
4543 } |
|
4544 |
|
4545 /* Get the RVLC table Index and length belonging to the codeword */ |
|
4546 if (vdxGetRVLCIndex(bits, &RVLCIndex, (int *) &RVLCLength, fIntraBlock, bitErrorIndication) != VDX_OK) |
|
4547 goto exitFunction; |
|
4548 |
|
4549 /* Flush the codeword from the buffer */ |
|
4550 bibRewindBits(RVLCLength, inBuffer, &bibError); |
|
4551 if (bibError) |
|
4552 goto exitFunction; |
|
4553 |
|
4554 if (RVLCIndex == 7167) /* ESCAPE */ |
|
4555 { |
|
4556 /* MARKER BIT */ |
|
4557 bibRewindBits(1, inBuffer, &bibError); |
|
4558 if (bibError) |
|
4559 goto exitFunction; |
|
4560 if(!bibShowBits(1, inBuffer, &numBitsGot, bitErrorIndication,&bibError) |
|
4561 || bibError ) { |
|
4562 deb("vdxGetRVLCDCTBlockBackwards:ERROR - Wrong marker bit.\n"); |
|
4563 if ( !bibError ) |
|
4564 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4565 goto exitFunction; |
|
4566 } |
|
4567 /* LEVEL */ |
|
4568 bibRewindBits(11, inBuffer, &bibError); |
|
4569 if (bibError) |
|
4570 goto exitFunction; |
|
4571 level = (int) bibShowBits(11, inBuffer, &numBitsGot, bitErrorIndication, |
|
4572 &bibError); |
|
4573 if (level == 0 || bibError ) { |
|
4574 if (!bibError) { |
|
4575 deb("vdxGetRVLCDCTBlockBackwards:ERROR - Invalid Level.\n"); |
|
4576 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4577 } |
|
4578 goto exitFunction; |
|
4579 } |
|
4580 /* MARKER BIT */ |
|
4581 bibRewindBits(1, inBuffer, &bibError); |
|
4582 if (bibError) |
|
4583 goto exitFunction; |
|
4584 if(!bibShowBits(1, inBuffer, &numBitsGot, bitErrorIndication,&bibError) |
|
4585 || bibError ) { |
|
4586 if ( !bibError ) { |
|
4587 deb("vdxGetRVLCDCTBlockBackwards:ERROR - Wrong marker bit.\n"); |
|
4588 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4589 } |
|
4590 goto exitFunction; |
|
4591 } |
|
4592 /* RUN */ |
|
4593 bibRewindBits(6, inBuffer, &bibError); |
|
4594 if (bibError) |
|
4595 goto exitFunction; |
|
4596 run = (int) bibShowBits(6, inBuffer, &numBitsGot, bitErrorIndication, |
|
4597 &bibError); |
|
4598 if (bibError) { |
|
4599 goto exitFunction; |
|
4600 } |
|
4601 /* LAST */ |
|
4602 bibRewindBits(1, inBuffer, &bibError); |
|
4603 if (bibError) |
|
4604 goto exitFunction; |
|
4605 last = bibShowBits(1, inBuffer, &numBitsGot, bitErrorIndication, |
|
4606 &bibError); |
|
4607 if (bibError) { |
|
4608 goto exitFunction; |
|
4609 } |
|
4610 |
|
4611 /* Get the first ESCAPE code from the buffer */ |
|
4612 bibRewindBits(5, inBuffer, &bibError); |
|
4613 if (bibError) |
|
4614 goto exitFunction; |
|
4615 escape = bibShowBits(5, inBuffer, &numBitsGot, bitErrorIndication, |
|
4616 &bibError); |
|
4617 if (bibError) { |
|
4618 goto exitFunction; |
|
4619 } |
|
4620 |
|
4621 if (escape != 1) { |
|
4622 deb("vdxGetRVLCDCTBlockBackwards:ERROR - illegal escape code.\n"); |
|
4623 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4624 goto exitFunction; |
|
4625 } |
|
4626 |
|
4627 RVLCLength += 25; |
|
4628 |
|
4629 } else { |
|
4630 |
|
4631 last = (RVLCIndex >> 16) & 1; |
|
4632 run = (RVLCIndex >> 8) & 255; |
|
4633 level = RVLCIndex & 255; |
|
4634 } |
|
4635 |
|
4636 if (sign) |
|
4637 level = -level; |
|
4638 |
|
4639 if (index == 63) { |
|
4640 if (!last) { |
|
4641 deb("vdxGetRVLCDCTBlockBackwards:ERROR - last TCOEFF problem.\n"); |
|
4642 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4643 goto exitFunction; |
|
4644 } else |
|
4645 last = 0; |
|
4646 } |
|
4647 |
|
4648 if (last) { |
|
4649 bibFlushBits((RVLCLength + 1), inBuffer, &numBitsGot, bitErrorIndication, |
|
4650 &bibError); |
|
4651 if (bibError) |
|
4652 goto exitFunction; |
|
4653 |
|
4654 } else if (index - run < startIndex) { |
|
4655 deb("vdxGetRVLCDCTBlockBackwards:ERROR - too many TCOEFFs.\n"); |
|
4656 retValue = VDX_OK_BUT_BIT_ERROR; |
|
4657 goto exitFunction; |
|
4658 |
|
4659 } else { |
|
4660 /* Do run-length decoding. Since we are decoding backwards, level has to be inserted first */ |
|
4661 block[index--] = level; |
|
4662 |
|
4663 while (run--) |
|
4664 block[index--] = 0; |
|
4665 |
|
4666 } |
|
4667 |
|
4668 } while (!last); |
|
4669 |
|
4670 exitFunction: |
|
4671 |
|
4672 { |
|
4673 int i; |
|
4674 for(i=startIndex,index++; i<=63; i++,index++) |
|
4675 block[i]= (index <= 63) ? block[index] : 0; |
|
4676 } |
|
4677 |
|
4678 |
|
4679 if (!bibError) |
|
4680 return retValue; |
|
4681 else if (bibError == ERR_BIB_NOT_ENOUGH_DATA) { |
|
4682 return VDX_OK_BUT_BIT_ERROR; |
|
4683 } else |
|
4684 return VDX_ERR_BIB; |
|
4685 } |
|
4686 |
|
4687 // End of File |
|