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 defining the 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 |
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23 #ifndef VEDAVCEDIT_H |
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24 #define VEDAVCEDIT_H |
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25 |
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26 #include <e32base.h> |
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27 |
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28 /** |
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29 * CVedAVCEdit abstract base class for AVC editing class |
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30 * |
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31 * @lib vedAVCEdit |
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32 * @since |
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33 */ |
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34 class CVedAVCEdit : public CBase |
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35 { |
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36 |
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37 public: // Constants |
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38 |
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39 public: // Constructors and destructor |
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40 |
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41 /** |
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42 * Two-phased constructor. |
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43 * |
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44 */ |
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45 IMPORT_C static CVedAVCEdit* NewL(); |
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46 |
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47 /** |
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48 * Destructor. |
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49 */ |
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50 virtual ~CVedAVCEdit(); |
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51 |
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52 public: // New functions |
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53 |
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54 /* |
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55 * Add MDF specific NAL headers to input AVC frame |
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56 * |
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57 * @param aBuf Input/output buffer |
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58 * @param aFrameLen Input/output frame length |
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59 * @param aDecInfoSize Decoder specific info size |
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60 * @param aFirstFrame ETrue for first frame in sequence |
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61 */ |
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62 virtual void ProcessAVCBitStreamL(TDes8& aBuf, TInt& aFrameLen, TInt aDecInfoSize, TBool aFirstFrame) = 0; |
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63 |
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64 /* |
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65 * Calculate default value for no. of buffered frames according to |
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66 * H.264 spec Annex A |
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67 * |
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68 * @param aLevel AVC level |
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69 * @param aResolution Video resolution |
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70 */ |
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71 virtual TInt GetMaxAVCFrameBuffering(TInt aLevel, TSize aResolution) = 0; |
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72 |
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73 /* |
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74 * Get input bitstream level from SPS. Note: SPS Nal unit must be at the |
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75 * beginning of the input buffer |
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76 * |
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77 * @param aBuf Input buffer containing SPS |
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78 * @param aLevel Output: Baseline profile level |
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79 */ |
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80 virtual TInt GetLevel(TDesC8& aBuf, TInt& aLevel) = 0; |
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81 |
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82 /* |
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83 * Get input bitstream video resolution from SPS. Note: SPS Nal unit must |
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84 * be at the beginning of the input buffer |
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85 * |
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86 * @param aBuf Input buffer containing SPS |
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87 * @param aResolution Output: Resolution |
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88 */ |
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89 virtual TInt GetResolution(TDesC8& aBuf, TSize& aResolution) = 0; |
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90 |
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91 #ifdef VIDEOEDITORENGINE_AVC_EDITING |
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92 |
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93 /* |
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94 * Convert AVC specific decoder config info to AVCDecoderConfigurationRecord -format |
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95 * |
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96 * @param aSrcBuf Source buffer containing SPS/PPS NAL units in AVC MDF buffer format |
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97 * @param aDstBuf Destination buffer for AVCDecoderConfigurationRecord |
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98 */ |
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99 virtual void ConvertAVCHeaderL(TDesC8& aSrcBuf, TDes8& aDstBuf ) = 0; |
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100 |
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101 /* |
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102 * Save SPS/PPS NAL units from AVCDecoderConfigurationRecord |
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103 * for later use |
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104 * |
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105 * @param aBuf Input buffer containing AVCDecoderConfigurationRecord |
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106 */ |
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107 virtual void SaveAVCDecoderConfigurationRecordL(TDes8& aBuf, TBool aFromEncoder) = 0; |
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108 |
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109 /* |
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110 * Update slice header information: frame number and PPS id |
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111 * |
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112 * @param aBuf Buffer containing input frame |
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113 * @param aContainsDCR ETrue if AVC decoder config. record is included |
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114 * @param aFromEncoder ETrue if frame comes from the encoder |
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115 */ |
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116 virtual TInt ParseFrame(HBufC8*& aBuf, TBool aContainsDCR, TBool aFromEncoder) = 0; |
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117 |
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118 /* |
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119 * Constructs AVCDecoderConfigurationRecord for the whole sequence, taking |
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120 * into account all input DCR's |
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121 * |
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122 * @param aDstBuf Destination buffer for AVCDecoderConfigurationRecord |
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123 * @param aLevel Level output sequence |
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124 */ |
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125 virtual void ConstructAVCDecoderConfigurationRecordL( TDes8& aDstBuf ) = 0; |
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126 |
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127 /* |
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128 * Set length of NAL size field of output sequence |
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129 * |
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130 * @param aSize Length of size field in bytes |
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131 */ |
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132 virtual void SetNALLengthSize( TInt aSize ) = 0; |
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133 |
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134 /* |
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135 * Set output level for constructing AVCDecoderConfigurationRecord |
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136 * |
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137 * @param aLevel Output level |
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138 */ |
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139 virtual void SetOutputLevel(TInt aLevel) = 0; |
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140 |
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141 /* |
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142 * Check if encoding is required until the next IDR unit |
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143 * |
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144 */ |
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145 virtual TBool EncodeUntilIDR() = 0; |
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146 |
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147 /* |
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148 * Check if NAL unit is an IDR NAL |
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149 * |
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150 * @param aNalBuf buffer containing NAL unit |
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151 */ |
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152 virtual TBool IsNALUnitIDR( TDes8& aNalBuf ) = 0; |
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153 |
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154 /* |
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155 * Store PPS id from the current slice |
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156 * |
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157 * @param aNalBuf buffer containing NAL unit |
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158 */ |
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159 virtual void StoreCurrentPPSId( TDes8& aNalBuf ) = 0; |
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160 |
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161 /* |
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162 * Generate a not coded frame |
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163 * |
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164 * @param aNalBuf buffer containing NAL unit |
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165 */ |
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166 virtual TInt GenerateNotCodedFrame( TDes8& aNalBuf, TUint aFrameNumber ) = 0; |
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167 |
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168 /* |
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169 * Modify the frame number of the NAL unit |
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170 * |
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171 * @param aNalBuf buffer containing NAL unit |
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172 */ |
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173 virtual void ModifyFrameNumber( TDes8& aNalBuf, TUint aFrameNumber ) = 0; |
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174 #endif |
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175 |
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176 }; |
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177 |
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178 |
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179 #endif |
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180 |
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181 // End of File |
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