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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 * |
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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 * Name : Mp4demux.h |
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22 * Part of : Videoplayer |
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23 * Origin : |
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24 * Created : Mon Sep 10 13:48:59 2001 by jykokkon |
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25 * Description: |
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26 * |
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27 * Version : |
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28 * %version: 3 %, %date_modified: Wed Jan 28 15:16:13 2009 % by %derived_by: mkarimak % |
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29 * |
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30 * --------------------------------------------------------------------------- |
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31 * Version history: |
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32 * Template version: 1.02, 21.6.2000 by maparnan |
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33 * <ccm_history> |
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34 * |
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35 * Version: 1, Mon Sep 10 13:49:00 2001 by jykokkon |
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36 * Ref: ?reference_to_reason_doc_if_any (e.g. ActionDb Id) |
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37 * ?change_reason_comment |
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38 * |
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39 * </ccm_history> |
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40 * ============================================================================ |
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41 */ |
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42 |
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43 #ifndef __MP4DEMUX_H__ |
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44 #define __MP4DEMUX_H__ |
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45 |
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46 // INCLUDES |
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47 |
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48 #ifndef __DEMULTIPLEXER_H__ |
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49 #include "demultiplexer.h" |
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50 #endif |
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51 |
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52 // FORWARD DECLARATIONS |
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53 |
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54 class CActiveQueue; |
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55 class CStatusMonitor; |
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56 class CMP4Parser; |
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57 |
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58 // CLASS DEFINITIONS |
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59 |
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60 class CMP4Demux : public CDemultiplexer |
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61 { |
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62 public: // Constants |
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63 |
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64 enum TErrorCode |
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65 { |
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66 EInternalAssertionFailure = -2300 |
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67 }; |
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68 |
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69 // The type of data in an output channel |
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70 enum TChannelDataType |
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71 { |
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72 EDataNone = 0, |
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73 EDataAudio, |
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74 EDataVideo |
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75 }; |
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76 |
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77 public: // Data structures |
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78 |
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79 // Demux parameters |
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80 struct TStreamParameters |
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81 { |
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82 TUint iPicturePeriodMs; |
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83 TUint iAudioFramesInSample; |
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84 }; |
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85 |
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86 // One output channel |
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87 struct TOutputChannel |
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88 { |
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89 TChannelDataType iDataType; |
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90 CActiveQueue *iTargetQueue; |
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91 }; |
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92 |
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93 |
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94 public: // Constructors and destructor |
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95 |
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96 /** |
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97 * Two-phased constructor. |
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98 */ |
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99 |
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100 static CMP4Demux* NewL(CActiveQueue *anInputQueue, |
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101 TUint aNumChannels, TOutputChannel *aOutputChannels, |
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102 TStreamParameters *aParameters, |
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103 CStatusMonitor *aStatusMonitor, |
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104 CMP4Parser *aParser, |
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105 TInt aPriority=EPriorityStandard); |
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106 |
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107 /** |
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108 * Destructor. |
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109 */ |
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110 ~CMP4Demux(); |
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111 |
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112 public: // New functions |
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113 |
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114 /** |
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115 * Read a number of frames to video queue |
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116 * |
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117 * @param aCount Number of frames to read |
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118 * @return Error code |
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119 */ |
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120 TInt ReadVideoFrames(TInt aCount); |
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121 |
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122 public: // Functions from base classes |
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123 |
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124 /** |
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125 * From CDemultiplexer Start demultiplexing |
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126 */ |
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127 void Start(); |
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128 |
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129 /** |
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130 * From CDemultiplexer Stop demultiplexing |
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131 */ |
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132 void Stop(); |
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133 |
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134 /** |
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135 * From CDataProcessor Standard active object running method |
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136 */ |
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137 void RunL(); |
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138 |
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139 /** |
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140 * From CDataProcessor Called by the input queue object when |
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141 * the input stream has ended |
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142 * @param aUserPointer user data pointer |
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143 */ |
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144 void StreamEndReached(TAny *aUserPointer); |
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145 |
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146 /** |
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147 * From CDataProcessor Cancels any asynchronous requests pending |
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148 */ |
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149 void DoCancel(); |
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150 |
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151 private: // Internal methods |
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152 |
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153 /** |
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154 * C++ default constructor. |
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155 */ |
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156 CMP4Demux(CActiveQueue *anInputQueue, |
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157 TUint aNumChannels, TOutputChannel *aOutputChannels, |
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158 TStreamParameters *aParameters, |
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159 CStatusMonitor *aStatusMonitor, |
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160 CMP4Parser *aParser, |
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161 TInt aPriority); |
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162 |
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163 /** |
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164 * Second-phase constructor |
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165 */ |
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166 void ConstructL(); |
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167 |
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168 /** |
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169 * Select audio/video frame to be demuxed next |
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170 * (used when stream is in a local file) |
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171 */ |
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172 void SetFrameType(); |
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173 |
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174 /** |
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175 * Get number of free blocks in target queue |
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176 * @return TUint number of blocks |
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177 */ |
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178 TUint NumFreeBlocks(); |
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179 |
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180 /** |
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181 * Get information about next frame from parser |
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182 * @return TInt error code |
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183 */ |
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184 TInt GetFrameInfo(); |
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185 |
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186 /** |
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187 * Read next frame(s) from parser & send them to |
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188 * decoder |
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189 * @return TInt error code |
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190 */ |
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191 TInt ReadAndSendFrames(); |
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192 |
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193 private: // Data |
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194 CStatusMonitor *iMonitor; // status monitor object |
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195 CActiveQueue *iInputQueue; // input data queue |
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196 CMP4Parser *iParser; // MP4 format parser object |
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197 |
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198 TUint iNumOutputChannels; // the number of output channels used |
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199 TOutputChannel *iOutputChannels; // the output channels |
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200 |
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201 TBool iGotFrame; // TRUE if a frame is available |
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202 |
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203 TUint iBytesDemuxed; // bytes demuxed during current run |
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204 |
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205 TOutputChannel *iVideoChannel; // the channel used for output space checks |
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206 TOutputChannel *iAudioChannel; // the channel used for output space checks |
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207 |
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208 TUint iAudioFramesInSample; // number of audio frames in MP4 sample |
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209 TUint iPicturePeriodMs; // average coded picture period |
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210 |
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211 TBool iDemultiplexing; // are we demuxing? |
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212 |
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213 TUint iFrameLen; // length of next frame to be retrieved |
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214 TChannelDataType iFrameType; // type of next frame to be retrieved |
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215 |
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216 TBool iAudioEnd; |
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217 TBool iVideoEnd; |
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218 TBool iStreamEnd; // has the stream end been reached? |
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219 TBool iStreamEndDemuxed; // have we demultiplexed everything up to strem end? |
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220 TBool iReaderSet; // have we been set as a reader to the input queue? |
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221 TBool iWriterSet; // have we been set as a writer to the output queues? |
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222 |
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223 TPtr8 *iInputBlock; // current input queue block |
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224 |
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225 }; |
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226 |
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227 #endif // __MP4DEMUX_H__ |
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228 |
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229 // End of File |