author | hgs |
Tue, 24 Aug 2010 03:16:41 -0500 | |
changeset 43 | 9894ed580e4a |
parent 0 | 71ca22bcf22a |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: The functions in this module implements the common behavior |
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* for the audio decoder base class. |
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* |
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*/ |
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|
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|
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// INCLUDE FILES |
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#include "AdvancedAudioDecoder.h" |
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#include "DebugMacros.h" |
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#include <mmfdatabuffer.h> |
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//#include <Mmfcodec.h> |
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EXPORT_C TCodecProcessResult CAdvancedAudioDecoder::ProcessHwL(CMMFBuffer& aSrc, CMMFBuffer& aDst) |
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{ |
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DP0(_L ("CAdvancedAudioDecoder::ProcessAccelL ---start")); |
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TMMFPtr8 codecSrc; |
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TMMFPtr8 codecDst; |
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TCodecProcessResult result; |
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result.iStatus = TCodecProcessResult::EProcessIncomplete; |
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//convert from generic CMMFBuffer to CMMFDataBuffer |
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iSrc = static_cast<const CMMFDataBuffer*>(&aSrc); |
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iDst = static_cast<CMMFDataBuffer*>(&aDst); |
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const TUint srcLen = iSrc->Data().Length(); |
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const TUint dstAvail = iDst->Data().MaxLength() - iDst->Position(); |
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if (!dstAvail) |
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User::Leave(KErrArgument); |
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TUint dstAdded = 0; |
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TUint srcUsed = 0; |
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TInt srcPos = iSrc->Position(); |
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TInt dstPos = iDst->Position(); |
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// DP4(_L ("CAdvancedAudioDecoder::ProcessAccelL: srcLen[%d], srcPos[%d] dstPos[%d], dstAvailLen[%d]"), srcLen, srcPos, dstPos, dstAvailLen); |
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while ((dstAdded < dstAvail) && (srcPos + srcUsed < srcLen)) |
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{ |
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codecSrc.Set(iSrc->Data()); |
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codecDst.Set(iDst->Data()); |
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codecDst.SetLength(codecDst.MaxLength()); |
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codecSrc.Shift(srcPos + srcUsed); |
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codecDst.Shift(dstPos + dstAdded); |
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// DP2(_L ("CAdvancedAudioDecoder::ProcessAccelL: before ProcessDecodeL offsetting srcptr to srcPos[%d]+srcUsed[%d]"), srcPos, srcUsed); |
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ProcessParseL(&codecSrc, &codecDst); |
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if (!iEnabled) |
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{ // output buffer is invalid when stopped - don't use it |
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DP0(_L ("CAdvancedAudioDecoder::ProcessAccelL --- end - disabled - returning")); |
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result.iStatus = TCodecProcessResult::EProcessComplete; |
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return result; |
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} |
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dstAdded += codecDst.Length(); |
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srcUsed += codecSrc.Length(); |
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if (iMarkPlayEnd) |
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{ // don't parse any more data |
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DP0(_L ("CAdvancedAudioDecoder::ProcessAccelL --- mark play end breaking")); |
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break; |
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} |
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} |
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result.iSrcBytesProcessed = srcUsed; |
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result.iDstBytesAdded = dstAdded; |
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if (result.iDstBytesAdded && (result.iSrcBytesProcessed + srcPos >= srcLen)) |
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result.iStatus = TCodecProcessResult::EProcessComplete; |
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else if (result.iDstBytesAdded < dstAvail) |
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result.iStatus = TCodecProcessResult::EDstNotFilled; |
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iDst->Data().SetLength(iDst->Position()+result.iDstBytesAdded); |
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DP0(_L ("CAdvancedAudioDecoder::ProcessAccelL ---end")); |
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return result; |
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} |
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// ----------------------------------------------------------------------------- |
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// CAdvancedAudioDecoder::ProcessParseL |
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// ProcessParseL method that shall be called from the ProcessL method to perform |
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// the parsing of the encoded data |
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// ----------------------------------------------------------------------------- |
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EXPORT_C void CAdvancedAudioDecoder::ProcessParseL(TMMFPtr8* aSrc, TMMFPtr8* aDst) |
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{ |
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103 |
DP0(_L ("CAdvancedAudioDecoder::ProcessParseL ---start")); |
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104 |
TUint8* srcPtr = NULL; |
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105 |
TUint8* dstPtr = NULL; |
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106 |
TInt srcLen = aSrc->Length(); |
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107 |
TInt dstAvail= aDst->Length(); |
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108 |
TInt srcUsed = 0; |
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109 |
TInt dstUsed = 0; |
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110 |
|
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111 |
//************************************************** |
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112 |
//* Get Input Data: Only want to process more input |
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113 |
//* data if the output buffer is empty. |
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114 |
//************************************************** |
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115 |
|
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116 |
if(iOutBufferCount == 0) |
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117 |
{ |
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118 |
srcPtr = (TUint8*) aSrc->Ptr(); |
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119 |
|
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120 |
//************************************************* |
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121 |
//* If the input buffer is empty, and there is |
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122 |
//* enough data in the input stream, then use the |
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123 |
//* data from the input stream. Else must append |
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124 |
//* available input data to the input buffer. |
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125 |
//************************************************* |
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126 |
|
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127 |
srcPtr = PrepareInFrame(srcPtr, srcLen, srcUsed); |
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128 |
|
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129 |
if (iInBufferCount > 0) |
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130 |
{ |
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131 |
srcLen = iInBufferCount; |
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132 |
} |
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133 |
} |
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|
134 |
|
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135 |
//************************************************* |
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136 |
//* If there is enough input data, then determine |
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137 |
//* where the output should go (output stream or |
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138 |
//* output buffer if output stream doesn't have |
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139 |
//* enough room). Then parse the data. |
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140 |
//************************************************* |
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|
141 |
|
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142 |
if(srcPtr) |
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143 |
{ |
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144 |
// Determine where to put output data |
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145 |
dstPtr = (TUint8*) aDst->Ptr(); |
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146 |
dstUsed = iOutFrameLength; |
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147 |
TInt inLen, outLen; |
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|
148 |
|
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149 |
outLen = dstAvail; |
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|
150 |
|
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151 |
if(dstAvail < iOutFrameLength) |
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152 |
{ |
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153 |
// DP2(_L ("CAdvancedAudioDecoder::ProcessParseL: dstAvail[%d], iOutFrameLength[%d]"), dstAvail, iOutFrameLength); |
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|
154 |
|
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155 |
dstPtr = iOutBuffer; |
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156 |
outLen = iOutFrameLength; // Set the dst length to the new length |
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157 |
} |
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|
158 |
|
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159 |
// Parse one frame |
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160 |
inLen = srcLen; |
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|
161 |
|
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162 |
ParseL(srcPtr, inLen, dstPtr, outLen); |
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|
163 |
if (!iEnabled) |
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|
164 |
{ // aDst and dstPtr invalid when stopped - don't use |
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165 |
DP0(_L ("CAdvancedAudioDecoder::ProcessParseL --- end - disabled - returning")); |
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166 |
return; |
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167 |
} |
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|
168 |
|
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|
169 |
// adjust in counters |
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170 |
if (iInBufferCount > 0) |
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|
171 |
{ |
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172 |
// if parse from the temp buf, adjust indexes |
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173 |
// DP3(_L ("CAdvancedAudioDecoder::ProcessParseL adjusting tempbuf after parse count[%d] indx[%d] used[%d]"), |
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174 |
// iInBufferCount, iInBufferIndx, inLen); |
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|
175 |
iInBufferCount -= inLen; |
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|
176 |
iInBufferIndx += inLen; |
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|
177 |
} |
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178 |
else |
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|
179 |
{ |
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180 |
srcUsed = inLen; |
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|
181 |
} |
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|
182 |
|
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183 |
if ((inLen == 0) && (iSrc->LastBuffer())) |
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|
184 |
{ |
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185 |
srcUsed = srcLen; |
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186 |
dstUsed = 0; |
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187 |
} |
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|
188 |
|
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189 |
// adjust out counters |
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190 |
dstUsed = outLen; |
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|
191 |
|
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192 |
if (dstAvail < iOutFrameLength) |
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193 |
iOutBufferCount = outLen; |
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194 |
} |
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|
195 |
|
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196 |
//************************************************* |
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197 |
//* If any data is stored in the output buffer, |
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198 |
//* then output as much of it as well fit in the |
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199 |
//* output stream. |
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|
200 |
//************************************************* |
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|
201 |
|
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202 |
if(iOutBufferCount > 0) |
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|
203 |
{ |
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204 |
dstUsed = Min (iOutBufferCount, dstAvail); |
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205 |
TPtrC8 outPtr (iOutBufferPtr, dstUsed); |
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|
206 |
|
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207 |
aDst->SetLength(0); |
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208 |
aDst->Append (outPtr); |
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|
209 |
|
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iOutBufferCount -= dstUsed; |
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iOutBufferPtr += dstUsed; |
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|
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if(iOutBufferCount == 0) |
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{ |
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iOutBufferPtr = iOutBuffer; |
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} |
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} |
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|
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|
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//************************************************* |
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//* Modify the length attributes of the source and |
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//* destination data streams to inform the caller |
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//* of how much data was used in each buffer. |
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//************************************************* |
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|
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|
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// DP2(_L ("CAdvancedAudioDecoder::ProcessParseL maxlen[%d] used[%d]"), aSrc->MaxLength(), srcUsed); |
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aSrc->SetLength(srcUsed); |
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aDst->SetLength(dstUsed); |
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DP0(_L ("CAdvancedAudioDecoder::ProcessParseL ---end")); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAdvancedAudioDecoder::PrepareInFrame |
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// ----------------------------------------------------------------------------- |
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EXPORT_C TUint8* CAdvancedAudioDecoder::PrepareInFrame(TUint8* aSrc, TInt aSrcLen, TInt& aSrcUsed) |
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{ |
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// DP0(_L ("CAdvancedAudioDecoder::PrepareInFrame ---start")); |
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// note: aSrcUsed returns how much data is used from source buffer. |
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// when it reaches the value of aSrcLen, we will be provided the next input buffer. |
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// while we are decoding from the temp buf, we set it to 0 because we have not decoded any from |
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// the current src buffer. |
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TUint8* dataPtr = NULL; |
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aSrcUsed = 0; |
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|
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if (iInBufferCount == 0) |
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{ |
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// decoding from src buffer |
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// DP2(_L("CAdvancedAudioDecoder::PrepareInFrame, aSrc[0x%x] aSrcLen[%d]"), aSrc, aSrcLen); |
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|
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iInBufferFilled = EFalse; |
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iInBufferIndx = 0; |
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|
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if (aSrcLen >= iMaxFrameSize) |
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{ // if enough data in input buffer, just use input buffer |
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// DP2(_L ("CAdvancedAudioDecoder::PrepareInFrame using input buffer[0x%x][0x%x]"), aSrc, aSrc[0]); |
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dataPtr = aSrc; |
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} |
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else if (iSrc->LastBuffer()) |
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{ // if input buffer is last buffer, then use it |
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// DP2(_L ("CAdvancedAudioDecoder::PrepareInFrame using last input buffer[0x%x][0x%x]"), aSrc, aSrc[0]); |
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dataPtr = aSrc; |
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} |
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else |
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{ |
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// save input data |
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// When not enough data in input buffer, move it to temp buffer |
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// DP5(_L ("CAdvancedAudioDecoder::PrepareInFrame moving to temp buffer[0x%x] src[0x%x]d0[0x%x]srclen[%d]dend[0x%x]"), |
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// iInBuffer, aSrc, aSrc[0], aSrcLen, aSrc[aSrcLen-1]); |
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Mem::Copy(iInBuffer, aSrc, aSrcLen); |
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iInBufferCount = aSrcLen; |
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aSrcUsed = aSrcLen; // inform that we used input buffer so we will get a new input buffer |
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iInBufferIndx = 0; // index will move with amount of data decoded |
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dataPtr = NULL; // NULL prevents decoder from decoding. We need to fill rest of temp buffer |
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iUsedInBuffer = iInBufferCount; |
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iSavedBytesCopiedFromSrc = 0; |
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} |
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} |
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else |
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280 |
{ |
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// decoding from temp buffer |
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dataPtr = iInBuffer+iInBufferIndx; // index is adjusted after decode and ptr is data to decode |
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// DP4(_L ("CAdvancedAudioDecoder::PrepareInFrame using temp buffer dataPtr[0x%x] iInBufferIndx[%d] iInBufferCount[%d] iInBufferFilled[%d]"), |
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// dataPtr, iInBufferIndx, iInBufferCount, iInBufferFilled); |
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285 |
|
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if (!iInBufferFilled) |
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{ |
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// need to fill rest of temp buffer |
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TInt bytesToCopy = iSizeOfInBuffer-iUsedInBuffer; |
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TInt bytesAvailable = aSrcLen; |
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|
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if (bytesAvailable < bytesToCopy) |
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{ |
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bytesToCopy = bytesAvailable; |
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} |
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|
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if (bytesToCopy) |
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{ |
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// only do this once - partial input buffer means last buffer |
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// DP5(_L ("CAdvancedAudioDecoder::PrepareInFrame putting more to temp buffer dstptr[0x%x] srcptr[0x%x]d0[0x%x]cnt[%d]dend[0x%x]"), |
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// dataPtr+iUsedInBuffer, aSrc, aSrc[0], bytesToCopy, iInBuffer[KSizeOfInBuffer-1]); |
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Mem::Copy(dataPtr+iUsedInBuffer, aSrc, bytesToCopy); |
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iSavedBytesCopiedFromSrc = bytesToCopy; // save byte count used from this src buffer |
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iInBufferCount += bytesToCopy; |
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iUsedInBuffer += bytesToCopy; |
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iInBufferFilled = ETrue; |
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} |
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} |
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309 |
else |
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310 |
{ |
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|
311 |
// temp buffer is filled and we are decoding from it |
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diff
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|
312 |
TInt decodeOffsetIntoInputBuf = iSavedBytesCopiedFromSrc - iInBufferCount; |
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Revision: 201003
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diff
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|
313 |
// DP1(_L ("CAdvancedAudioDecoder::PrepareInFrame using temp buf aSrcUsed[%d]"), decodeOffsetIntoInputBuf); |
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diff
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|
314 |
|
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Revision: 201003
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parents:
diff
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|
315 |
if (decodeOffsetIntoInputBuf >= 0) |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
316 |
{ |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
317 |
// within the temp buffer, we have decoded all of the prior src buffer's data |
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Revision: 201003
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diff
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|
318 |
// we are decoding into the data copied from the current input buffer |
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Revision: 201003
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parents:
diff
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|
319 |
// so we can set the pointer to start using input buffer again |
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Revision: 201003
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parents:
diff
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|
320 |
dataPtr = NULL; // NULL prevents decoder from decoding. Need to let src get updated by aSrcUsed |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
321 |
iInBufferCount = 0; |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
322 |
aSrcUsed = decodeOffsetIntoInputBuf; |
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Revision: 201003
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parents:
diff
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|
323 |
// DP1(_L ("CAdvancedAudioDecoder::PrepareInFrame using inbuffer again, aSrcUsed[%d]"), aSrcUsed); |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
324 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
325 |
else |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
326 |
{ |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
327 |
aSrcUsed = 0; // here references current src buffer that we are not decoding from yet. |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
328 |
// DP1(_L ("CAdvancedAudioDecoder::PrepareInFrame using inbuffer again, aSrcUsed[%d] b"), aSrcUsed); |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
329 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
330 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
331 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
332 |
|
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
333 |
return dataPtr; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
334 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
335 |
|
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
336 |
// ----------------------------------------------------------------------------- |
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Revision: 201003
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diff
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|
337 |
// CAdvancedAudioDecoder::ParseL |
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Revision: 201003
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diff
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|
338 |
// ----------------------------------------------------------------------------- |
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Revision: 201003
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|
339 |
EXPORT_C void CAdvancedAudioDecoder::ParseL(TUint8* aSrc, TInt& aSrcUsed, TUint8* aDst, TInt& aDstLen) |
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|
340 |
{ |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
341 |
DP1(_L ("CAdvancedAudioDecoder::ParseL [0x%x]"), aSrc[0]); |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
342 |
TInt savedLen = aSrcUsed; |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
343 |
TInt err = KErrNone; |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
344 |
TInt inLen = aSrcUsed; |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
345 |
// TAudioFrameInfo frameInfo; |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
346 |
TInt frameLen; |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
347 |
|
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
348 |
// Parse one frame |
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Revision: 201003
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parents:
diff
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|
349 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
350 |
err = FrameLength(aSrc, inLen, frameLen); |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
351 |
aSrcUsed = frameLen; |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
352 |
if (aSrcUsed > savedLen) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
353 |
{ // in case util reports more bytes used than what is available at the end of the content |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
354 |
aSrcUsed = savedLen; |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
355 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
356 |
|
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
357 |
if (!iRenderEnabled) |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
358 |
{ // seeking |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
359 |
aDstLen = 0; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
360 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
361 |
else |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
362 |
{ |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
363 |
if (err == KErrNone) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
364 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
365 |
Mem::Copy(aDst, aSrc, aSrcUsed); |
71ca22bcf22a
Revision: 201003
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parents:
diff
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|
366 |
aDstLen = aSrcUsed; |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
367 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
368 |
} |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
369 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
370 |
if (err != KErrNone) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
371 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
372 |
aSrcUsed = 0; |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
373 |
err = KErrCorrupt; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
374 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
375 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
376 |
// DP2(_L ("CAdvancedAudioDecoder::ParseL after decode aSrcUsed[%d] aDstLen[%d]"), aSrcUsed, aDstLen); |
71ca22bcf22a
Revision: 201003
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parents:
diff
changeset
|
377 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
378 |
DP1(_L ("CAdvancedAudioDecoder::ParseL err [%d]"),err); |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
379 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
380 |
if (err == KErrNone) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
381 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
382 |
if (iFrameTable) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
383 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
iFrameTable->SubmitTableEntry(iAccLen); // to add an entry for the frame actually decoded |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
388 |
if (err == KErrCorrupt) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
aDstLen = 0; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
// decode was not successful at this position, need to move forward because sync may still be found here. |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
TInt syncPos = SeekSync(aSrc+1, savedLen-1); // decoder's seek returns 0 if not found, so we need to use our own seek function |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
if (syncPos == savedLen-1) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
{ // search whole buffer - no sync found - so indicate the rest of the data has been used |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
aSrcUsed = savedLen; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
else |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
aSrcUsed = syncPos+1; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
400 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
err = KErrNone; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
iAccLen += aSrcUsed; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
|
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
if(err != KErrNone) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
{ // unrecoverable error |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
if (iSrc->LastBuffer()) |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
409 |
{ // don't have to error on last buffer, just indicate all the data was used |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
aSrcUsed = savedLen; |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
411 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
else |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
{ |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
User::Leave(err); |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
} |
71ca22bcf22a
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
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} |
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} |
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// ----------------------------------------------------------------------------- |
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// CAdvancedAudioDecoder::SeekSync |
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// ----------------------------------------------------------------------------- |
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TInt CAdvancedAudioDecoder::SeekSync(TUint8* /*aBuf*/, TInt /*aBufLen*/) |
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{ |
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return KErrNotSupported; |
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} |
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TInt CAdvancedAudioDecoder::FrameLength(const TUint8* /*aBuf*/, TInt /*aBufLen*/, TInt& /*aFrameLength*/) |
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{ |
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return KErrNotSupported; |
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} |
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|
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// End of file |