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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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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 "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 * |
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14 * Description: |
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15 * |
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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 // ============================ INCLUDES ======================================= |
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21 |
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22 #include "mcch263newpayloadencoder.h" |
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23 #include "mcch263formatlogs.h" |
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24 |
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25 // ============================ MEMBER FUNCTIONS =============================== |
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26 |
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27 // ----------------------------------------------------------------------------- |
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28 // CMccH263NewPayloadEncoder::NewL() |
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29 // First stage constructor |
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30 // (other items were commented in a header). |
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31 // ----------------------------------------------------------------------------- |
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32 // |
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33 CMccH263NewPayloadEncoder* CMccH263NewPayloadEncoder::NewL() |
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34 { |
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35 return new ( ELeave ) CMccH263NewPayloadEncoder(); |
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36 } |
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37 |
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38 CMccH263NewPayloadEncoder::~CMccH263NewPayloadEncoder() |
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39 { |
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40 } |
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41 |
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42 // ----------------------------------------------------------------------------- |
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43 // CMccH263NewPayloadEncoder::WriteBufferL() |
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44 // Write media buffer |
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45 // (other items were commented in a header). |
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46 // ----------------------------------------------------------------------------- |
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47 // |
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48 void CMccH263NewPayloadEncoder::EncodeL( |
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49 CMMFBuffer* aMMFBuffer, |
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50 RPointerArray<CBufferContainer>& aDesBuffers ) |
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51 { |
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52 __H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL, enter") |
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53 |
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54 const TInt KMccValZero = 0; |
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55 const TInt KMccValOne = 1; |
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56 |
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57 CMMFDataBuffer* buf = static_cast<CMMFDataBuffer*>( aMMFBuffer ); |
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58 iSendHeader.iMarker = 0; |
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59 |
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60 // Get timestamp to RTP header. conversion to 90kHz clock |
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61 TInt64 tmpStamp = |
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62 ( buf->TimeToPlay().Int64() + iTimeStamp.Int64() ) / KConst100 * KConst9 ; |
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63 iSendHeader.iTimestamp = TRtpTimeStamp( tmpStamp ) ; |
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64 |
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65 __H263FORMAT_MEDIA_INT2("CMccH263NewPayloadEncoder::EncodeL > TimeStamp:", |
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66 iSendHeader.iTimestamp, "Length:", buf->BufferSize()) |
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67 |
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68 // Reset marker from last frame |
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69 iSendHeader.iMarker = 0; |
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70 // Get pointer to raw data |
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71 TPtrC8 frame = buf->Data(); |
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72 |
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73 // Check that descriptor length is included. |
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74 // Missing length causes panic in frame.Mid() function |
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75 if ( frame.Length() == 0 || buf->BufferSize() != frame.Length() ) |
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76 { |
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77 __H263FORMAT_MEDIA ("CMccH263NewPayloadEncoder::EncodeL, ERROR Buffer corrupted") |
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78 User::Leave( KErrBadDescriptor ); |
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79 } |
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80 const TUint8 *dataPtr = buf->Data().Ptr(); |
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81 |
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82 // Get buffer length |
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83 TUint frameLength = buf->BufferSize(); |
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84 |
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85 // Initialize splitting variables |
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86 TInt lastGOB = 0; |
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87 TInt lastsend = 0; |
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88 TPtrC8 packetData; |
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89 |
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90 // Scan frame for GOBs |
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91 for( TUint i= 0; i < frameLength - KConst2; i++ ) |
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92 { |
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93 dataPtr += i; |
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94 if ( *dataPtr == TUint8( 0x00 ) ) |
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95 { |
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96 dataPtr++; |
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97 if ( *dataPtr == TUint8( 0x00 ) ) |
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98 { |
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99 dataPtr++; |
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100 if ( TUint8( *dataPtr&0xfc ) > 0x80 ) |
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101 { |
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102 if ( ( i - lastsend ) >= KVideoPacketSize && |
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103 ( i - lastsend ) <= KMaxPacketSize && |
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104 lastGOB ) |
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105 { |
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106 __H263FORMAT_MEDIA_INT2( |
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107 "CMccH263NewPayloadEncoder::EncodeL(scan gobs), Sending packet f:", |
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108 lastsend, "len:", ( lastGOB - lastsend ) ) |
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109 |
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110 // Packet size exceeded send new RTP Packet |
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111 // +2 exclude first 2 0-bytes |
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112 packetData.Set( |
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113 frame.Mid( ( lastsend + KConst2 ), |
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114 ( lastGOB - lastsend ) - KConst2 ) ); |
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115 |
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116 CreateNewBufferL( aMMFBuffer, |
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117 aDesBuffers, |
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118 packetData, |
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119 packetData.Length() + KConst4, |
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120 KMccValZero, |
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121 KMccValZero, |
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122 KMccValOne ); |
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123 |
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124 lastsend = lastGOB; |
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125 } |
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126 |
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127 lastGOB = i; |
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128 } |
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129 } |
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130 } |
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131 // Return pointer to begining of frame |
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132 dataPtr = frame.Ptr(); |
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133 } |
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134 |
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135 // Check that last packet does not exceed packet size |
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136 if ( ( frameLength - lastsend ) >= KVideoPacketSize && lastsend != 0 ) |
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137 { |
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138 __H263FORMAT_MEDIA_INT2( |
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139 "CMccH263NewPayloadEncoder::EncodeL(last packet check), Sending packet f:", |
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140 lastsend, "len:", ( lastGOB - lastsend ) ) |
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141 |
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142 // +2 exlude first 2 0-bytes |
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143 packetData.Set( |
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144 frame.Mid( ( lastsend + KConst2 ), ( lastGOB - lastsend ) - KConst2 ) ); |
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145 |
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146 CreateNewBufferL( aMMFBuffer, |
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147 aDesBuffers, |
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148 packetData, |
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149 packetData.Length() + KConst4, |
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150 KMccValZero, |
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151 KMccValZero, |
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152 KMccValOne ); |
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153 |
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154 lastsend = lastGOB; |
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155 } |
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156 |
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157 // Send last packet to RTP API |
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158 if ( lastsend != 0 ) |
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159 { |
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160 __H263FORMAT_MEDIA_INT2( |
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161 "CMccH263NewPayloadEncoder::EncodeL(last packet), Sending packet f:", |
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162 lastsend, "len:", ( frameLength - lastsend ) ) |
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163 |
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164 // +2 exlude first 2 0-bytes |
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165 packetData.Set( |
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166 frame.Mid( ( lastsend + KConst2 ),( frameLength - lastsend ) - KConst2 ) ); |
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167 |
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168 // Set marker to indicate last packet of current frame |
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169 CreateNewBufferL( aMMFBuffer, |
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170 aDesBuffers, |
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171 packetData, |
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172 packetData.Length() + KConst4, |
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173 KMccValOne, |
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174 KMccValZero, |
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175 KMccValOne ); |
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176 |
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177 } |
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178 |
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179 // Special case no GOBs found try to send whole frame |
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180 else |
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181 { |
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182 if ( buf->BufferSize() > TInt( KVideoPacketSize + KConst2 ) ) |
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183 { |
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184 __H263FORMAT_MEDIA( |
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185 "CMccH263NewPayloadEncoder::EncodeL(no gobs), divide to multiple packets") |
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186 |
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187 // First packet |
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188 // 2 exlude first 2 0-bytes |
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189 packetData.Set( frame.Mid( KConst2, ( KVideoPacketSize - KConst2 ) ) ); |
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190 |
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191 // Set marker to indicate last packet of current frame |
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192 CreateNewBufferL( aMMFBuffer, |
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193 aDesBuffers, |
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194 packetData, |
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195 KVideoPacketSize, |
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196 KMccValZero, |
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197 KMccValZero, |
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198 KMccValOne ); |
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199 |
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200 // Other pieces |
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201 TUint index = KVideoPacketSize, size; |
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202 while (index < buf->BufferSize()) |
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203 { |
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204 __H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL(no gobs), looping") |
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205 |
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206 size= buf->BufferSize() - index; |
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207 packetData.Set( |
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208 frame.Mid( index, Min( TInt( KVideoPacketSize - KConst2 ), size ) ) ); |
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209 |
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210 // Set marker to indicate last packet of current frame |
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211 TInt marker = size > TInt( KVideoPacketSize ) ? KMccValZero : KMccValOne; |
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212 |
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213 CreateNewBufferL( aMMFBuffer, |
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214 aDesBuffers, |
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215 packetData, |
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216 Min( TInt( KVideoPacketSize ), size + KConst2 ), |
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217 marker, |
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218 KMccValOne, |
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219 KMccValOne ); |
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220 |
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221 index += KVideoPacketSize - KConst2; |
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222 } |
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223 } |
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224 else |
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225 { |
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226 __H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL(no gobs), fits one packet") |
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227 |
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228 // 2 exlude first 2 0-bytes |
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229 packetData.Set( frame.Mid( KConst2, ( frameLength - KConst2 ) ) ); |
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230 |
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231 CreateNewBufferL( aMMFBuffer, |
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232 aDesBuffers, |
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233 packetData,frameLength, |
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234 KMccValOne, |
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235 KMccValZero, |
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236 KMccValOne ); |
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237 |
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238 } |
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239 } |
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240 |
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241 __H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL, exit") |
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242 |
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243 } |
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244 // ----------------------------------------------------------------------------- |
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245 // CMccH263NewPayloadEncoder::WriteHeaderData() |
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246 // Write payload header information byte |
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247 // (other items were commented in a header). |
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248 // ----------------------------------------------------------------------------- |
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249 // |
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250 TUint8 CMccH263NewPayloadEncoder::WriteHeaderData( TInt aByte ) |
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251 { |
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252 __H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::WriteHeaderData") |
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253 |
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254 TUint8 wbyte = 0; |
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255 switch ( aByte ) |
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256 { |
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257 case 0: |
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258 { |
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259 wbyte |= TUint8( 1 << KConst2 ); //indicate that fist 2 0-bytes are excluded |
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260 }break; //from start codes |
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261 case 1: |
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262 { |
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263 }break; |
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264 default: |
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265 { |
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266 }break; |
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267 } |
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268 return wbyte; |
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269 } |
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270 // ----------------------------------------------------------------------------- |
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271 // CMccH263NewPayloadEncoder::SetPayloadType() |
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272 // ----------------------------------------------------------------------------- |
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273 // |
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274 void CMccH263NewPayloadEncoder::SetPayloadType( TUint8 aPayloadType ) |
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275 { |
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276 __H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::SetPayloadType") |
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277 iSendHeader.iPayloadType = aPayloadType; |
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278 } |
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279 |
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280 // ----------------------------------------------------------------------------- |
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281 // CMccH263NewPayloadEncoder::CreateNewBufferL() |
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282 // ----------------------------------------------------------------------------- |
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283 // |
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284 void CMccH263NewPayloadEncoder::CreateNewBufferL( |
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285 CMMFBuffer* aMMFBuffer, |
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286 RPointerArray<CBufferContainer>& aDesBuffers, |
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287 const TDesC8& aPacketData, |
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288 TInt aLength, |
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289 TInt aMarker, |
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290 TInt aHeaderDataByteOne, |
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291 TInt aHeaderDataByteTwo ) |
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292 { |
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293 CMMFDataBuffer* newBuffer = |
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294 CMMFDataBuffer::NewL( aLength ); |
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295 CleanupStack::PushL( newBuffer ); |
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296 newBuffer->Data().Append( WriteHeaderData( aHeaderDataByteOne ) ); |
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297 newBuffer->Data().Append( WriteHeaderData( aHeaderDataByteTwo ) ); |
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298 newBuffer->Data().Append( aPacketData ); |
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299 newBuffer->SetTimeToPlay( aMMFBuffer->TimeToPlay() ); |
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300 newBuffer->SetFrameNumber( aMMFBuffer->FrameNumber() + iSequenceNumIncrementer ); |
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301 |
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302 // If frame is divided in several packets, sequence numbers of following |
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303 // packets have to be modified |
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304 if ( aMarker == 0 ) |
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305 { |
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306 iSequenceNumIncrementer++; |
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307 } |
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308 |
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309 CBufferContainer* cont = new (ELeave) CBufferContainer(); |
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310 CleanupStack::Pop( newBuffer ); |
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311 cont->iBuffer = newBuffer; |
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312 iSendHeader.iMarker = aMarker; |
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313 cont->iSendHeader = iSendHeader; |
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314 CleanupStack::PushL( cont ); |
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315 aDesBuffers.AppendL( cont ); |
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316 CleanupStack::Pop( cont ); |
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317 } |
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318 |