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 * A header file for implementation class of AVC editing API. |
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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 #ifndef VEDAVCEDITIMP_H |
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23 #define VEDAVCEDITIMP_H |
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24 |
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25 // INCLUDES |
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26 #include "avcdapi.h" |
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27 #include "vedavcedit.h" |
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28 |
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29 // FORWARD DECLARATIONS |
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30 |
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31 // CLASS DECLARATION |
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32 |
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33 /** |
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34 * CTranscoder Implementation class |
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35 * @lib VEDAVCEDIT.LIB |
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36 * @since |
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37 */ |
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38 |
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39 NONSHARABLE_CLASS(CVedAVCEditImp) : public CVedAVCEdit |
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40 { |
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41 |
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42 public: // Constructors and destructor |
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43 |
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44 /** |
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45 * Two-phased constructor. |
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46 */ |
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47 static CVedAVCEditImp* NewL(); |
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48 |
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49 /** |
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50 * Destructor. |
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51 */ |
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52 ~CVedAVCEditImp(); |
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53 |
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54 public: // Functions from CVedAVCEdit |
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55 |
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56 /** |
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57 * From CVedAVCEdit Add MDF specific NAL headers to input AVC frame |
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58 */ |
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59 void ProcessAVCBitStreamL(TDes8& aBuf, TInt& aFrameLen, TInt aDecInfoSize, TBool aFirstFrame); |
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60 |
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61 /** |
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62 * From CVedAVCEdit Calculate default value for max no. of buffered frames |
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63 */ |
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64 TInt GetMaxAVCFrameBuffering(TInt aLevel, TSize aResolution); |
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65 |
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66 /** |
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67 * From CVedAVCEdit Get input bitstream level from SPS |
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68 */ |
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69 TInt GetLevel(TDesC8& aBuf, TInt& aLevel); |
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70 |
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71 /** |
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72 * From CVedAVCEdit Get input bitstream resolution from SPS |
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73 */ |
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74 TInt GetResolution(TDesC8& aBuf, TSize& aResolution); |
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75 |
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76 #ifdef VIDEOEDITORENGINE_AVC_EDITING |
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77 |
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78 /** |
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79 * From CVedAVCEdit Convert AVC decoder config info to AVCDecoderConfigurationRecord -format |
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80 */ |
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81 void ConvertAVCHeaderL(TDesC8& aSrcBuf, TDes8& aDstBuf ); |
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82 |
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83 /** |
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84 * From CVedAVCEdit Save SPS/PPS NAL units from AVCDecoderConfigurationRecord |
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85 */ |
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86 void SaveAVCDecoderConfigurationRecordL(TDes8& aBuf, TBool aFromEncoder); |
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87 |
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88 /** |
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89 * From CVedAVCEdit Update slice header information: frame number and PPS id |
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90 */ |
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91 TInt ParseFrame(HBufC8*& aBuf, TBool aContainsDCR, TBool aFromEncoder); |
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92 |
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93 /** |
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94 * From CVedAVCEdit Constructs AVCDecoderConfigurationRecord for the output sequence |
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95 */ |
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96 void ConstructAVCDecoderConfigurationRecordL( TDes8& aDstBuf ); |
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97 |
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98 /** |
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99 * From CVedAVCEdit Set length of NAL size field of output sequence |
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100 */ |
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101 void inline SetNALLengthSize( TInt aSize ) { iNalLengthSize = aSize; } |
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102 |
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103 /** |
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104 * From CVedAVCEdit Set output level for constructing AVCDecoderConfigurationRecord |
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105 */ |
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106 void inline SetOutputLevel(TInt aLevel) { iOutputLevel = aLevel; } |
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107 |
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108 /** |
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109 * From CVedAVCEdit Check if encoding is required until the next IDR unit |
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110 */ |
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111 TBool EncodeUntilIDR(); |
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112 |
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113 /** |
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114 * From CVedAVCEdit Check if NAL unit is an IDR NAL |
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115 */ |
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116 TBool IsNALUnitIDR( TDes8& aNalBuf ); |
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117 |
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118 /** |
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119 * From CVedAVCEdit Store PPS id from current slice |
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120 */ |
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121 void StoreCurrentPPSId( TDes8& aNalBuf ); |
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122 |
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123 /** |
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124 * From CVedAVCEdit Generate a not coded frame |
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125 */ |
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126 TInt GenerateNotCodedFrame( TDes8& aNalBuf, TUint aFrameNumber ); |
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127 |
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128 /** |
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129 * From CVedAVCEdit Modify the frame number of the NAL unit |
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130 */ |
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131 void ModifyFrameNumber( TDes8& aNalBuf, TUint aFrameNumber ); |
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132 |
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133 private: // Private methods |
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134 |
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135 /* |
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136 * Saves one SPS/PPS NAL unit for later use |
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137 * |
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138 * @param aBuf Input buffer containing AVCDecoderConfigurationRecord |
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139 */ |
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140 TInt ParseOneNAL(void *aNalUnitData, TUint* aNalUnitLength, TBool aFromEncoder); |
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141 |
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142 TInt ParseParameterSet(void *aNalUnitData, TUint* aNalUnitLength, TBool aFromEncoder); |
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143 #endif |
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144 |
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145 private: |
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146 |
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147 /** |
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148 * C++ default constructor. |
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149 */ |
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150 CVedAVCEditImp(); |
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151 |
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152 /** |
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153 * 2nd phase constructor |
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154 */ |
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155 void ConstructL(); |
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156 |
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157 private: // Data |
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158 |
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159 avcdDecoder_t* iAvcDecoder; // For parsing AVC content / for CD operations |
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160 |
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161 TInt iFrameLengthBytes; // no. of bytes used for length field |
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162 |
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163 #ifdef VIDEOEDITORENGINE_AVC_EDITING |
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164 |
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165 TInt iNalLengthSize; // The number of bytes used to signal NAL unit's length |
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166 |
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167 TInt iOutputLevel; // output level |
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168 |
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169 #endif |
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170 |
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171 }; |
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172 |
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173 |
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174 #endif |
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175 |
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176 // End of File |
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