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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 * Header file for video encoder class. |
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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 #ifndef VIDEOENCODER_H |
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22 #define VIDEOENCODER_H |
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23 |
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24 // INCLUDES |
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25 |
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26 #include <CCMRMediaSink.h> |
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27 #include "CTRTranscoderObserver.h" |
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28 #include "CTRTranscoder.h" |
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29 #include "CTRCommon.h" |
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30 #include "CTRVideoPictureSink.h" |
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31 #include "Vedcommon.h" |
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32 |
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33 // FORWARD DECLARATIONS |
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34 |
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35 class CStatusMonitor; |
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36 class CVedVolReader; |
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37 class CVedAVCEdit; |
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38 |
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39 class CVideoEncoder : public CActive, public MTRTranscoderObserver, |
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40 public MCMRMediaSink, public MTRVideoPictureSink |
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41 { |
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42 |
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43 public: // Constructors and destructor |
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44 |
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45 /** |
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46 * Two-phased constructor. |
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47 */ |
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48 static CVideoEncoder* NewL(CStatusMonitor *aMonitor, CVedAVCEdit* aAvcEdit, |
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49 const TPtrC8& aVideoMimeType); |
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50 |
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51 /** |
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52 * Destructor. |
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53 */ |
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54 |
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55 ~CVideoEncoder(); |
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56 |
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57 public: // Constants |
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58 |
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59 enum TErrorCode |
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60 { |
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61 EInternalAssertionFailure = -10030, |
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62 }; |
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63 |
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64 public: // Functions from base classes |
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65 |
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66 /** |
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67 * From CActive Active object running method |
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68 */ |
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69 void RunL(); |
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70 |
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71 /** |
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72 * From CActive Active object error method |
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73 */ |
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74 TInt RunError(TInt aError); |
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75 |
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76 /** |
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77 * From CActive Active object cancelling method |
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78 */ |
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79 void DoCancel(); |
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80 |
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81 /** |
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82 * From MTRTranscoderObserver |
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83 */ |
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84 void MtroInitializeComplete(TInt aError); |
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85 |
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86 /** |
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87 * From MTRTranscoderObserver |
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88 */ |
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89 void MtroFatalError(TInt aError); |
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90 |
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91 /** |
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92 * From MTRTranscoderObserver |
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93 */ |
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94 void MtroReturnCodedBuffer(CCMRMediaBuffer* aBuffer); |
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95 |
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96 /** |
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97 * From MTRTranscoderObserver |
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98 */ |
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99 void MtroSetInputFrameRate(TReal& aRate); |
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100 |
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101 /** |
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102 * From MTRTranscoderObserver |
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103 */ |
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104 void MtroAsyncStopComplete(); |
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105 |
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106 /** |
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107 * From MTRTranscoderObserver |
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108 */ |
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109 inline void MtroSuspend() { }; |
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110 |
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111 /** |
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112 * From MTRTranscoderObserver |
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113 */ |
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114 inline void MtroResume() { }; |
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115 |
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116 /** |
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117 * From MCMRMediaSink |
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118 */ |
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119 void WriteBufferL(CCMRMediaBuffer* aBuffer); |
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120 |
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121 /** |
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122 * From MCMRMediaSink |
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123 */ |
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124 TInt SetVideoFrameSize(TSize aSize); |
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125 |
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126 /** |
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127 * From MCMRMediaSink |
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128 */ |
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129 TInt SetAverageVideoBitRate(TInt aBitRate); |
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130 |
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131 /** |
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132 * From MCMRMediaSink |
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133 */ |
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134 TInt SetMaxVideoBitRate(TInt aBitRate); |
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135 |
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136 /** |
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137 * From MCMRMediaSink |
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138 */ |
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139 TInt SetAverageAudioBitRate(TInt aBitRate); |
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140 |
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141 /** |
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142 * From MTRVideoPictureSink |
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143 */ |
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144 void MtroPictureFromTranscoder(TTRVideoPicture* aPicture); |
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145 |
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146 public: // New functions |
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147 |
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148 /** |
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149 * Sets the used frame size |
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150 * |
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151 * @param aSize Frame size |
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152 * @return Error codew |
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153 */ |
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154 void SetFrameSizeL(const TSize& aSize); |
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155 |
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156 /** |
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157 * Gets the current frame size |
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158 * |
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159 * @param aSize Frame size |
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160 * @return void |
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161 */ |
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162 void FrameSize(TSize& aSize) const; |
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163 |
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164 /** |
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165 * Sets the target frame rate |
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166 * |
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167 * @param aFrameRate frame rate |
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168 * @return Error code |
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169 */ |
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170 TInt SetFrameRate(const TReal aFrameRate); |
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171 |
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172 /** |
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173 * Sets the frame rate of input sequence |
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174 * |
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175 * @param aFrameRate frame rate |
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176 * @return Error code |
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177 */ |
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178 TInt SetInputFrameRate(const TReal aFrameRate); |
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179 |
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180 /** |
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181 * Sets the target random access rate |
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182 * |
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183 * @param aRate random access rate |
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184 * @return Error code |
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185 */ |
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186 TInt SetRandomAccessRate(const TReal aRate); |
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187 |
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188 /** |
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189 * Sets the target bitrate |
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190 * |
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191 * @param aBitrate Bitrate |
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192 * @return Error code |
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193 */ |
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194 TInt SetBitrate(const TInt aBitrate); |
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195 |
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196 /** |
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197 * Initializes the encoder |
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198 * |
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199 * @param aStatus Status object for active object |
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200 * @return void |
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201 */ |
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202 void InitializeL(TRequestStatus &aStatus); |
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203 |
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204 /** |
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205 * Encodes a frame |
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206 * |
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207 * @param aYUVFrame Frame to be encoded |
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208 * @param aStatus Status object for active object |
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209 * @param Timestamp of the frame |
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210 * @return void |
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211 */ |
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212 void EncodeFrameL(TPtr8 &aYUVFrame, TRequestStatus &aStatus, TTimeIntervalMicroSeconds aTimeStamp); |
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213 |
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214 /** |
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215 * Gets the encoded bitstream |
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216 * |
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217 * @param aKeyFrame Keyframe flag, True if the frame is Intra |
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218 * @return Descriptor containing the output bitstream |
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219 */ |
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220 TPtrC8& GetBufferL(TBool& aKeyFrame); |
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221 |
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222 /** |
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223 * Return used bitstream buffer |
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224 * |
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225 * @return void |
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226 */ |
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227 void ReturnBuffer(); |
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228 |
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229 /** |
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230 * Starts the encoder |
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231 * |
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232 * @return void |
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233 */ |
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234 void Start(); |
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235 |
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236 /** |
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237 * Stops the encoder |
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238 * |
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239 * @return void |
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240 */ |
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241 void Stop(); |
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242 |
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243 /** |
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244 * Resets the encoder |
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245 * |
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246 * @param aStatus Status object for active object |
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247 * @return void |
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248 */ |
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249 void Reset(TRequestStatus &aStatus); |
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250 |
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251 /** |
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252 * Resets the encoder synchronously |
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253 * |
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254 * @return void |
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255 */ |
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256 void Reset(); |
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257 |
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258 /** |
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259 * Gets status of whether encoding has been started |
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260 * |
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261 * @return ETrue if encoding has been started |
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262 */ |
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263 inline TBool BeenStarted() const { return iStarted; } |
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264 |
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265 /** |
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266 * Gets status of whether encoding request is pending |
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267 * |
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268 * @return ETrue if encode is pending |
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269 */ |
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270 inline TBool IsEncodePending() const { return iEncodePending; } |
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271 |
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272 /** |
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273 * Gets time increment resolution used in MPEG-4 |
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274 * |
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275 * @return Time increment resolution |
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276 */ |
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277 TInt GetTimeIncrementResolution() const; |
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278 |
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279 /** |
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280 * Forces the next encoded frame to be Intra |
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281 * |
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282 */ |
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283 void SetRandomAccessPoint(); |
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284 |
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285 private: |
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286 |
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287 /** |
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288 * C++ default constructor. |
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289 */ |
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290 CVideoEncoder(); |
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291 |
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292 /** |
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293 * By default EPOC constructor is private. |
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294 */ |
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295 void ConstructL(CStatusMonitor *aMonitor, CVedAVCEdit* aAvcEdit, |
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296 const TPtrC8& aVideoMimeType); |
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297 |
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298 /** |
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299 * Interpret and store video codec MIME-type, used by ConstructL |
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300 * @return void |
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301 */ |
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302 void SetVideoCodecL(const TPtrC8& aMimeType); |
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303 |
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304 /** |
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305 * Set encoding options |
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306 * @return void |
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307 */ |
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308 void SetupEncoderL(); |
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309 |
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310 /** |
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311 * Parses and writes codec specific information, i.e |
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312 * MPEG-4 VOL header and AVC decoder configuration record |
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313 * @return void |
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314 */ |
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315 void HandleCodingStandardSpecificInfoL(); |
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316 |
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317 private: // Data |
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318 |
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319 // Transcoder |
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320 CTRTranscoder* iTranscoder; |
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321 |
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322 // is encode pending ? |
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323 TBool iEncodePending; |
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324 |
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325 // has encoding been started ? |
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326 TBool iStarted; |
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327 |
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328 // used & max frame size, and info if size can be arbitrary |
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329 TSize iFrameSize; |
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330 TSize iMaxResolution; |
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331 TBool iArbitrarySizeAllowed; |
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332 |
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333 // target and max allowed frame rate |
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334 TReal32 iFrameRate; |
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335 TReal32 iMaxFrameRate; |
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336 |
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337 // input frame rate |
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338 TReal32 iInputFrameRate; |
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339 |
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340 // target random access rate |
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341 TReal iRandomAccessRate; |
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342 |
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343 // target and max allowed bit rate |
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344 TInt iBitRate; |
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345 TInt iMaxBitRate; |
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346 |
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347 // Mime type for encoded data |
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348 TBuf8<256> iMimeType; |
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349 |
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350 // input picture |
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351 TTRVideoPicture* iInputPicture; |
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352 |
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353 // bitstream buffer |
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354 HBufC8* iDataBuffer; |
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355 |
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356 // keyframe flag for bitstream buffer |
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357 TBool iKeyFrame; |
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358 |
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359 TPtrC8 iReturnDes; |
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360 |
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361 // External status info |
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362 TRequestStatus *iResetRequestStatus; |
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363 |
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364 TRequestStatus *iEncodeRequestStatus; |
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365 |
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366 TTimeIntervalMicroSeconds iPreviousTimeStamp; |
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367 |
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368 // MPEG-4 time increment resolution |
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369 TInt iTimeIncrementResolution; |
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370 |
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371 // input YUV data |
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372 TPtr8 iInputBuffer; |
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373 |
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374 // status monitor object |
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375 CStatusMonitor *iMonitor; |
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376 |
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377 // video object layer reader |
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378 CVedVolReader *iVolReader; |
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379 |
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380 RTimer iTimer; // timer object |
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381 TBool iTimerCreated; |
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382 TBool iTimerRequestPending; |
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383 |
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384 // Timer timeout, depends on codec and resolution |
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385 TUint iMaxEncodingDelay; |
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386 |
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387 // flag to check if devvideorec methods can be called or not; they can't be called after a fatal error |
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388 TBool iFatalError; |
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389 |
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390 #ifdef _DEBUG |
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391 TTime iEncodeStartTime; |
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392 #endif |
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393 |
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394 // AVC editing module |
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395 CVedAVCEdit* iAvcEdit; |
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396 |
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397 }; |
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398 |
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399 |
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400 |
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401 #endif |