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1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Constants and structs specific to H.263. See the DevVideo specs for more details. |
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15 // |
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16 // |
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17 |
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18 #ifndef __DEVVIDEO_H263_H__ |
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19 #define __DEVVIDEO_H263_H__ |
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20 |
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21 #include <e32base.h> |
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22 |
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23 |
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24 /** |
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25 Specifies the H263 picture type. |
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26 @publishedAll |
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27 @released |
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28 */ |
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29 enum TH263PictureType |
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30 { |
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31 /**INTRA picture*/ |
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32 EH263PictureTypeI = 0x01, |
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33 /**INTER picture*/ |
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34 EH263PictureTypeP = 0x02, |
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35 /**B picture according to H.263 Annex O*/ |
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36 EH263PictureTypeB = 0x04, |
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37 /**EI picture according to H.263 Annex O*/ |
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38 EH263PictureTypeEI = 0x08, |
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39 /**EP picture according to H.263 Annex O*/ |
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40 EH263PictureTypeEP = 0x10 |
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41 }; |
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42 |
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43 /** |
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44 These enumerations can be used in codec capability indication and/or bitstream property indication. |
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45 When used as part of an encoder capability indication, a signalled value indicates the capability |
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46 of an encoder to produce such supplemental information to the bitstream and the additional meanings |
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47 as specified below. When used as part of a decoder capability indication, a signalled value |
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48 indicates the capability of a decoder to react to such supplemental information in a way as |
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49 specified below. If a decoder does not have such capability, it shall be able to parse and discard |
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50 the supplemental information. When used as part of a bitstream property indication, a non-signalled |
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51 value indicates the absence of such information in the bitstream and a signalled value indicates |
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52 the possibility of having such information in the bitstream. |
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53 @publishedAll |
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54 @released |
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55 */ |
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56 enum TH263SupplementalInformation |
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57 { |
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58 /** |
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59 encoder capability: no meaning |
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60 decoder capability: no meaning |
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61 bitstream property: existence of FTYPE equal to 1 |
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62 */ |
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63 EH263SEIDoNothing = 0x00000001, |
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64 |
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65 /** |
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66 encoder capability: no meaning |
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67 decoder capability: capability to freeze displayed picture according to subclause L.4 of H.263capability to release frozen displayed picture as a response to bit 5 of PTYPE |
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68 bitstream property: existence of FTYPE equal to 2 |
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69 */ |
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70 EH263SEIFullPictureFreeze = 0x00000002, |
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71 |
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72 /** |
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73 encoder capability: no meaning |
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74 decoder capability: capability to freeze displayed picture partially (subclause L.5 of H.263) |
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75 bitstream property: existence of FTYPE equal to 3 |
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76 */ |
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77 EH263SEIPartialPictureFreeze = 0x00000004, |
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78 |
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79 /** |
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80 encoder capability: no meaning |
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81 decoder capability: capability to freeze and resize displayed picture partially (H.263 L.6) |
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82 bitstream property: existence of FTYPE equal to 4 |
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83 */ |
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84 EH263SEIResizingPartialPictureFreeze = 0x00000008, |
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85 |
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86 /** |
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87 encoder capability: no meaning |
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88 decoder capability: capability to release partially frozen picture (subclause L.7 of H.263) |
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89 bitstream property: existence of FTYPE equal to 5 |
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90 */ |
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91 EH263SEIPartialPictureFreezeRelease = 0x00000010, |
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92 |
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93 /** |
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94 encoder capability: no meaning |
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95 decoder capability: no meaning |
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96 bitstream property: existence of FTYPE equal to 6 |
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97 */ |
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98 EH263SEIFullPictureSnapshotTag = 0x00000020, |
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99 |
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100 /** |
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101 encoder capability: no meaning |
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102 decoder capability: no meaning |
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103 bitstream property: existence of FTYPE equal to 7 |
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104 */ |
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105 EH263SEIPartialPictureSnapshotTag = 0x00000040, |
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106 |
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107 /** |
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108 encoder capability: no meaning |
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109 decoder capability: no meaning |
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110 bitstream property: existence of FTYPE equal to 8 |
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111 */ |
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112 EH263SEIVideoTimeSegmentStartTag = 0x00000080, |
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113 |
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114 /** |
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115 encoder capability: no meaning |
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116 decoder capability: no meaning |
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117 bitstream property: existence of FTYPE equal to 9 |
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118 */ |
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119 EH263SEIVideoTimeSegmentEndTag = 0x00000100, |
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120 |
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121 /** |
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122 encoder capability: no meaning |
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123 decoder capability: no meaning |
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124 bitstream property: existence of FTYPE equal to 10 |
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125 */ |
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126 EH263SEIProgressiveRefinementStartTag = 0x00000200, |
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127 |
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128 /** |
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129 encoder capability: no meaning |
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130 decoder capability: no meaning |
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131 bitstream property: existence of FTYPE equal to 11 |
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132 */ |
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133 EH263SEIProgressiveRefinementEndTag = 0x00000400, |
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134 |
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135 /** |
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136 encoder capability: no meaning |
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137 decoder capability: operation according to sublause L.14 of H.263 |
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138 bitstream property: existence of FTYPE equal to 12 |
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139 */ |
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140 EH263SEIChromaKeying = 0x00000800, |
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141 |
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142 /** |
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143 encoder capability: use of the fixed-point IDCT algorithm specified in Annex W of H.263 |
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144 decoder capability: use of the fixed-point IDCT algorithm specified in Annex W of H.263 |
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145 bitstream property: existence of FTYPE equal to 13 |
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146 */ |
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147 EH263SEIFixedPointIDCT = 0x00001000, |
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148 |
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149 /** |
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150 encoder capability: no meaning |
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151 decoder capability: no meaning |
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152 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 0 |
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153 */ |
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154 EH263SEIArbitraryBinaryData = 0x00002000, |
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155 |
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156 /** |
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157 encoder capability: no meaning |
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158 decoder capability: no meaning |
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159 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 1 |
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160 */ |
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161 EH263SEIArbitraryText = 0x00004000, |
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162 |
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163 /** |
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164 encoder capability: no meaning |
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165 decoder capability: no meaning |
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166 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 2 |
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167 */ |
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168 EH263SEICopyrightText = 0x00008000, |
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169 |
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170 /** |
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171 encoder capability: no meaning |
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172 decoder capability: capability of display caption text as specified in subclause W.6.3.5 of H.263 |
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173 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 3 |
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174 */ |
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175 EH263SEICaptionText = 0x00010000, |
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176 |
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177 /** |
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178 encoder capability: no meaning |
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179 decoder capability: no meaning |
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180 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 4 |
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181 */ |
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182 EH263SEIVideoDescriptionText = 0x00020000, |
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183 |
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184 /** |
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185 encoder capability: no meaning |
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186 decoder capability: no meaning |
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187 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 5 |
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188 */ |
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189 EH263SEIUniformResourceIdentifierText = 0x00040000, |
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190 |
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191 /** |
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192 encoder capability: capability to repeat the current picture header (subclause W.6.3.7 of H.263) |
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193 decoder capability: capability to recover a corrupted picture header with a repeated one |
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194 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 6 |
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195 */ |
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196 EH263SEICurrentPictureHeaderRepetition = 0x00080000, |
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197 |
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198 /** |
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199 encoder capability: capability to repeat the previous picture header (subclause W.6.3.8 of H.263) |
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200 decoder capability: capability to recover a corrupted or lost picture header with a repeated one |
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201 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 7 |
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202 */ |
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203 EH263SEIPreviousPictureHeaderRepetition = 0x00100000, |
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204 |
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205 /** |
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206 encoder capability: capability to repeat the next picture header (W.6.3.9 of H.263) |
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207 decoder capability: capability to recover a corrupted or lost picture header with a repeated one |
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208 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 8 |
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209 */ |
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210 EH263SEINextPictureHeaderRepetitionReliableTR = 0x00200000, |
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211 |
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212 /** |
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213 encoder capability: capability to repeat the next picture header (W.6.3.10 of H.263) |
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214 decoder capability: capability to recover a corrupted or lost picture header with a repeated one |
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215 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 9 |
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216 */ |
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217 EH263SEINextPictureHeaderRepetitionUnreliableTR = 0x00400000, |
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218 |
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219 /** |
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220 encoder capability: capability to encode top fields of interlaced pictures |
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221 decoder capability: capability to decode and display top fields of interlaced pictures (W.6.3.11of H.263) |
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222 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 10 |
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223 */ |
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224 EH263SEITopInterlacedFieldIndication = 0x00800000, |
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225 |
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226 /** |
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227 encoder capability: capability to encode bottom fields of interlaced pictures |
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228 decoder capability: capability to decode and display bottom fields of interlaced pictures (W.6.3.11of H.263) |
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229 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 10 |
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230 */ |
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231 EH263SEIBottomInterlacedFieldIndication = 0x01000000, |
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232 |
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233 /** |
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234 encoder capability: capability to transmit picture numbers (subclause W.6.3.12 of H.263) |
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235 decoder capability: capability to indicate reference picture losses from missing picture numbers |
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236 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 12 |
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237 */ |
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238 EH263SEIPictureNumber = 0x02000000, |
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239 |
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240 /** |
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241 encoder capability: capability to generate spare reference picture information (W.6.3.13 of H.263) |
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242 decoder capability: capability to use a spare reference picture in absence of real reference picture |
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243 bitstream property: existence of FTYPE equal to 14 and MTYPE equal to 13 |
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244 */ |
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245 EH263SEISpareReferencePictures = 0x04000000 |
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246 }; |
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247 |
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248 |
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249 /** |
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250 H.263 picture header. |
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251 @publishedAll |
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252 @released |
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253 */ |
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254 class TH263PictureHeader |
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255 { |
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256 public: |
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257 /** |
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258 Indicates the temporal reference. iTemporalReference is equal to the value of TR or the value |
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259 of (ETR << 8) + TR if ETR is present in the picture header. |
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260 */ |
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261 TUint iTemporalReference; |
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262 |
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263 /** |
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264 iLongTermPicture equal to ETrue indicates that the picture has been marked as a long-term |
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265 picture according to the memory management control operation (MMCO) commands as specified |
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266 in Annex U of H.263. Otherwise the picture is not a long-term picture. |
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267 */ |
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268 TBool iLongTermPicture; |
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269 |
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270 /** |
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271 iSplitScreen is equal to the value of bit 3 of PTYPE. |
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272 */ |
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273 TBool iSplitScreen; |
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274 |
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275 /** |
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276 iDocumentCamera is equal to the value of bit 4 of PTYPE. |
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277 */ |
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278 TBool iDocumentCamera; |
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279 |
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280 /** |
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281 iFreezePictureRelease is equal to the value of bit 5 of PTYPE. |
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282 */ |
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283 TBool iFreezePictureRelease; |
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284 |
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285 /** |
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286 Indicates the picture coding type. iPictureType is set according to the picture header as one |
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287 of the values defined in TH263PictureType. |
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288 */ |
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289 TH263PictureType iPictureType; |
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290 |
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291 /** |
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292 Indicates the initial value of the quantization parameter. iPQuant is equal to the value of |
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293 the PQUANT syntax element. |
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294 */ |
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295 TUint iPQuant; |
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296 |
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297 /** |
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298 Indicates the presence of the extended PTYPE field in the picture layer. The extended PTYPE |
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299 field is specified in ITU-T Recommendation H.263 version 2 and later. iPlusPType is equal to 1 |
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300 if bits 6 - 8 of PTYPE are equal to '111'. Otherwise, iPlusPType is equal to 0. |
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301 */ |
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302 TBool iPlusPType; |
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303 |
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304 /** |
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305 Indicates the presence of the full extended PTYPE field in the picture layer. If iPlusPType is |
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306 EFalse, the value of of iUpdateFullExtendedPType is not valid. Otherwise, |
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307 iUpdateFullExtendedPType is equal to the value of the UFEP syntax element. |
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308 */ |
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309 TBool iUpdateFullExtendedPType; |
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310 |
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311 /** |
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312 Pixel aspect ratio numerator and denominator respectively. The pixel aspect ratio is defined as |
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313 iAspectRatioNum/iAspectRatioDenom, where the values are positive integers and relatively prime. |
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314 If iPlusPType is equal to 0, or iPlusPType is ETrue and iUpdateFullExtendedPType is ETrue and |
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315 bits 1 - 3 of the OPPTYPE syntax element are not equal to '110', iAspectRatioNum shall be equal |
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316 to 12 and iAspectRatioDenom shall be equal to 11 (as specified in subclause 4.1 of ITU-T |
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317 Recommendation H.263). If iPlusPType is ETrue and iUpdateFullExtendedPType is ETrue and bits |
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318 1 - 3 of the OPPTYPE syntax element are equal to '110', the values of iAspectRatioNum and |
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319 iAspectRatioDenom are set as specified in subclauses 5.1.5 and 5.1.6 of ITU-T Recommendation |
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320 H.263. Otherwise (iPlusPType is ETrue and iUpdateFullExtendedPType is EFalse), the values of |
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321 iAspectRatioNum and iAspectRatioDenom are not valid. |
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322 */ |
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323 TUint iAspectRatioNum; |
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324 |
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325 /** |
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326 Pixel aspect ratio numerator and denominator respectively. The pixel aspect ratio is defined as |
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327 iAspectRatioNum/iAspectRatioDenom, where the values are positive integers and relatively prime. |
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328 If iPlusPType is equal to 0, or iPlusPType is ETrue and iUpdateFullExtendedPType is ETrue and |
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329 bits 1 - 3 of the OPPTYPE syntax element are not equal to '110', iAspectRatioNum shall be equal |
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330 to 12 and iAspectRatioDenom shall be equal to 11 (as specified in subclause 4.1 of ITU-T |
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331 Recommendation H.263). If iPlusPType is ETrue and iUpdateFullExtendedPType is ETrue and bits |
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332 1 - 3 of the OPPTYPE syntax element are equal to '110', the values of iAspectRatioNum and |
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333 iAspectRatioDenom are set as specified in subclauses 5.1.5 and 5.1.6 of ITU-T Recommendation |
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334 H.263. Otherwise (iPlusPType is ETrue and iUpdateFullExtendedPType is EFalse), the values of |
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335 iAspectRatioNum and iAspectRatioDenom are not valid. |
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336 */ |
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337 TUint iAspectRatioDenom; |
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338 |
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339 /** |
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340 Picture clock frequency numerator and denominator respectively. The picture clock frequency |
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341 for temporal reference is defined as iPictureClockFrequencyRate / iPictureClockFrequencyScale |
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342 in floating point arithmetic and where the values are positive integers and relatively prime. |
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343 If iPlusPType is equal to 0, or iPlusPType is equal to 1 and iUpdateFullExtendedPType is equal |
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344 to 1 and bit 4 of the OPPTYPE syntax element is equal to 0, iPictureClockFrequencyRate shall be |
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345 equal to 30000 and iPictureClockFrequencyScale shall be equal to 1001 (as specified in subclause |
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346 4.1 of ITU-T Recommendation H.263). If iPlusPType is equal to 1 and iUpdateFullExtendedPType is |
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347 equal to 1 and bit 4 of the OPPTYPE syntax element is equal to 1, the values of |
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348 iPictureClockFrequencyRate and iPictureClockFrequencyScale are set as specified in subclause |
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349 5.1.7 of ITU-T Recommendation H.263. Otherwise (iPlusPType is equal to 1 and |
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350 iUpdateFullExtendedPType is equal to 0), the values of iPictureClockFrequencyRate and |
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351 iPictureClockFrequencyScale are not valid. |
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352 */ |
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353 TUint iPictureClockFrequencyRate; |
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354 |
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355 /** |
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356 Picture clock frequency numerator and denominator respectively. The picture clock frequency |
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357 for temporal reference is defined as iPictureClockFrequencyRate / iPictureClockFrequencyScale |
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358 in floating point arithmetic and where the values are positive integers and relatively prime. |
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359 If iPlusPType is equal to 0, or iPlusPType is equal to 1 and iUpdateFullExtendedPType is equal |
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360 to 1 and bit 4 of the OPPTYPE syntax element is equal to 0, iPictureClockFrequencyRate shall be |
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361 equal to 30000 and iPictureClockFrequencyScale shall be equal to 1001 (as specified in subclause |
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362 4.1 of ITU-T Recommendation H.263). If iPlusPType is equal to 1 and iUpdateFullExtendedPType is |
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363 equal to 1 and bit 4 of the OPPTYPE syntax element is equal to 1, the values of |
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364 iPictureClockFrequencyRate and iPictureClockFrequencyScale are set as specified in subclause |
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365 5.1.7 of ITU-T Recommendation H.263. Otherwise (iPlusPType is equal to 1 and |
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366 iUpdateFullExtendedPType is equal to 0), the values of iPictureClockFrequencyRate and |
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367 iPictureClockFrequencyScale are not valid. |
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368 */ |
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369 TUint iPictureClockFrequencyScale; |
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370 }; |
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371 |
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372 /** |
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373 This class is used to signal decoder or encoder capabilities or bitstream properties. |
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374 @publishedAll |
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375 @released |
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376 */ |
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377 class TH263VideoCapability |
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378 { |
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379 public: |
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380 /** |
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381 When part of a codec capability indication, iProfileLevel[ProfileNumber] indicates the |
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382 maximum processing level that a decoder or an encoder supports for a particular profile |
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383 indicated by ProfileNumber. A negative value indicates that the profile is not supported. |
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384 When part of a stream property indication, iProfileLevel[ProfileNumber] indicates the maximum |
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385 processing level that is present in the stream for a particular profile indicated by |
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386 ProfileNumber. A negative value indicates that the stream does not contain data coded according |
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387 to the indicated profile. |
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388 */ |
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389 TInt iProfileLevel[9]; |
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390 |
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391 /** |
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392 When equal to ETrue, indicating that it is allowed to use PLUSPTYPE (specified in the 1998 |
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393 version of H.263) to indicate custom picture sizes or clock frequencies. When equal to EFalse, |
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394 PLUSPTYPE shall not be used. |
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395 */ |
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396 TBool iPLUSPTYPEAllowed; |
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397 |
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398 /** |
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399 iSupplementalInformationCap indicates the supported supplemental enhancement functions. The |
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400 value is a binary OR of values from TH263SupplementalInformation. |
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401 */ |
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402 TUint32 iSupplementalInformationCap; |
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403 }; |
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404 |
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405 |
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406 /** |
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407 This class is used to set the encoder operation mode. |
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408 @publishedAll |
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409 @released |
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410 */ |
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411 class TH263VideoMode |
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412 { |
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413 public: |
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414 /** |
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415 Specifies the picture types allowed in the bitstream. The value is a binary OR of values from |
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416 TH263PictureType. Signaled picture types that are not included in the prevailing coding profile |
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417 are ignored. |
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418 */ |
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419 TUint32 iAllowedPictureTypes; |
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420 |
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421 /** |
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422 iForceRoundingTypeToZero equal to EFalse specifies that the value of the RTYPE bit (bit 6 of |
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423 MPPTYPE) is not constrained. It is recommended to change the value of the RTYPE bit for each |
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424 reference picture in error-free communication (subclause 5.1.4.3 of ITU-T H.263 Recommendation). |
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425 iForceRoundingTypeToZero equal to ETrue specifies that the value of the RTYPE bit shall be equal |
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426 to 0 or that the RTYPE field shall not be present in the picture layer. It is recommended to set |
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427 iForceRoundingTypeToZero equal to ETrue (and consequently RTYPE equal to 0) in error-prone |
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428 communication as recommended in section 4.2.6 of H.263 Appendix III [R6] and [R7]. |
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429 */ |
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430 TBool iForceRoundingTypeToZero; |
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431 |
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432 /** |
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433 Specifies the frequency of picture header repetition as specified in this paragraph. If |
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434 iPictureHeaderRepetition is equal to 0, picture headers are not repeated. Otherwise, a picture |
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435 header is repeated, if the value of the GFID syntax element is not equal to the value of the |
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436 GFID syntax element of the previous picture in bitstream order. If EDuRtpPayload data unit |
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437 encapsulation is in use, a picture header is repeated the number of times indicated by the value |
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438 of iPictureHeaderRepetition in those RTP payloads of the picture where the P bit according to |
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439 RFC 2429 [R8] is set equal to 1 and which do not contain the original picture header. If |
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440 EDuElementaryStream data unit encapsulation is in use, the picture header is repeated once in |
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441 the supplemental enhancement information of the next picture as specified in subclause W.6.3.8 |
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442 of ITU-T Recommendation H.263 and section 4.2.6 of H.263 Appendix III [R6]. |
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443 */ |
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444 TUint iPictureHeaderRepetition; |
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445 |
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446 /** |
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447 Specifies the interval of non-empty GOB headers in units of GOBs. The value of |
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448 iGOBHeaderInterval is valid if no slice structured coding mode (Annex K or Annex V) is in use. |
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449 If iGOBHeaderInterval is equal to 0 and an unlimited segment size is specified with the |
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450 SetSegmentTargetSize method, the encoder should not generate GOB headers. If iGOBHeaderInterval |
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451 is greater than 0 and an unlimited segment size is specified with the SetSegmentTargetSize |
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452 method, the encoder should generate a non-empty GOB header for every iGOBHeaderInterval-th GOB. |
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453 If SetSegmentTargetSize is used to set a limited segment size, the encoder should generate |
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454 segments (i.e., insert non-empty GOB headers) so that the length of the segment is no larger |
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455 than the target size in bytes and no larger than the GOB header frequency specified with the |
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456 value of iGOBHeaderInterval. |
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457 */ |
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458 TUint iGOBHeaderInterval; |
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459 }; |
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460 |
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461 /** |
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462 H.263 HRD parameters. |
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463 @publishedAll |
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464 @released |
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465 */ |
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466 class TH263HrdParams |
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467 { |
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468 public: |
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469 /** |
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470 When iAnnexXConstraints is equal to EFalse, iBPPmaxKb, iB, and iRmax indicate the values of HRD |
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471 parameters. When iAnnexXConstraints is equal to ETrue, the values of iBPPmaxKb, iB, and iRmax in |
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472 this class are ignored but rather their values are specified in Annex X of ITU-T Recommendation |
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473 H.263. |
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474 */ |
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475 TBool iAnnexXConstraints; |
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476 |
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477 /** |
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478 Signals the BPPmaxKb parameter of H.263. As specified in ITU-T Recommendation H.263. The number |
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479 of bits created by coding any single picture shall not exceed a maximum value specified by the |
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480 parameter BPPmaxKb that is measured in units of 1024 bits. The minimum value of BPPmaxKb is |
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481 specified in Table 1 of ITU-T Recommendation H.263. |
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482 */ |
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483 TUint iBPPmaxKb; |
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484 |
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485 /** |
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486 Signals the B parameter of H.263 Annex B. As specified in Annex B of ITU-T Recommendation H.263. |
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487 The value of B shall be equal to or greater than 4 * Rmax / PCF, where PCF is the picture clock |
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488 frequency specified in subclause 5.1.7 of ITU-T Recommendation H.263. The HRD receiving buffer |
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489 size is equal to (B + BPPmaxKb * 1024 bits). |
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490 */ |
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491 TUint iB; |
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492 |
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493 /** |
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494 Signals the maximum video bit rate in bits per second, i.e., the Rmax parameter of H.263 Annex B. |
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495 */ |
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496 TUint iRmax; |
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497 }; |
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498 |
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499 /** |
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500 H.263 redundant picture header. |
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501 Points to a buffer to contain the redundant picture header in the orignal bitstream order. The |
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502 buffer may be used by the MSL client in playback to pass the decapsulated redundant picture header |
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503 from an RTP payload formatted according to RFC 2429, or used by the MSL client in recording to pass |
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504 the picture header to the RTP encapsulator. |
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505 @publishedAll |
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506 @released |
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507 */ |
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508 typedef TPtr8* TH263RedundantPictureHeader; |
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509 |
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510 #endif |