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<a href="MpegAudioStream_8cxx.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * UNIVERSITAT POMPEU FABRA</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * along with this program; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="MpegAudioStream_8hxx.html">MpegAudioStream.hxx</a>"</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="AudioFile_8hxx.html">AudioFile.hxx</a>"</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="Assert_8hxx.html" title="Bug hunting and detection facilities for developers.">Assert.hxx</a>"</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>CLAM</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>AudioCodecs</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="comment">// A reasonable multiple of four</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">const</span> <a class="code" href="namespaceCLAM.html#a33598bc354b7042bc0d6529a155937a7">TSize</a> MpegAudioStream::mMaxDecodedBlockSize = 8192;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a24113380b0385eab258d062b1739de3d"> 35</a></span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a24113380b0385eab258d062b1739de3d">MpegAudioStream::MpegAudioStream</a>( <span class="keyword">const</span> <a class="code" href="classCLAM_1_1AudioFile.html">AudioFile</a>& file )</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  : mpHandle( <a class="code" href="OSDefines_8hxx.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> )</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  mName = file.<a class="code" href="classCLAM_1_1AudioFile.html#a031394d48ff9dc1647667d367858dcc3">GetLocation</a>();</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  mEncodedSampleRate = (<a class="code" href="classint.html">int</a>)file.<a class="code" href="classCLAM_1_1AudioFile.html#a1e487b072ed2dd5b1e0b03404795e572">GetHeader</a>().GetSampleRate();</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a> = (<a class="code" href="classint.html">int</a>)file.<a class="code" href="classCLAM_1_1AudioFile.html#a1e487b072ed2dd5b1e0b03404795e572">GetHeader</a>().GetChannels();</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  mDecodeBuffer.resize( <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a> );</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  }</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#ae5f81d07d86b1a432a836400394de2f0"> 44</a></span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#ae5f81d07d86b1a432a836400394de2f0">MpegAudioStream::~MpegAudioStream</a>()</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> ( not mpHandle ) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  fclose(mpHandle);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a44887df437739808d7b110dfeb518a4a"> 50</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a44887df437739808d7b110dfeb518a4a" title="Open the stream in read mode.">MpegAudioStream::PrepareReading</a>()</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  {</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  mpHandle = fopen( mName.c_str(), <span class="stringliteral">"rb"</span>);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> ( !mpHandle )</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  std::string msgString = <span class="stringliteral">"Could not open "</span>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  msgString += mName;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  msgString += <span class="stringliteral">" for reading!"</span>;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="Assert_8hxx.html#a0013fa617be6fec21a9ad7180e7d8cff" title="An assertion is a check on an expression that must be true given that all the contracts are fullfille...">CLAM_ASSERT</a>( <span class="keyword">false</span>, msgString.c_str() );</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ade8cbba0e144f0985c678286725fbad0">Init</a>( mpHandle );</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  mSamplesDecoded = 0;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a26d0baf336510345bf00b19f5894765a">mFramePosition</a> = 0;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  _mp3Frame = 0;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a17067c8efa465de0f87ab9d63f311374"> 70</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a17067c8efa465de0f87ab9d63f311374" title="Open the stream in write mode.">MpegAudioStream::PrepareWriting</a>()</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="Assert_8hxx.html#a0013fa617be6fec21a9ad7180e7d8cff" title="An assertion is a check on an expression that must be true given that all the contracts are fullfille...">CLAM_ASSERT</a>( <span class="keyword">false</span>, <span class="stringliteral">"CLAM does not encode Mpeg Audio!!!"</span>);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#af5f1f7bd84d22a46b72f1d68354dfd82"> 75</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#af5f1f7bd84d22a46b72f1d68354dfd82" title="Close the stream.">MpegAudioStream::Dispose</a>()</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#aa0d2c2bfe55a9305e294f827d91d3abc">Finish</a>();</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#af55830725732bf5904ccaf8a081f4816"> 80</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#af55830725732bf5904ccaf8a081f4816" title="Move data from the file to mInterleavedData.">MpegAudioStream::DiskToMemoryTransfer</a>()</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">unsigned</span> nFrames = <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a2e4d3d7ae3d3a5c6f9e8da2bf71a6aef">mInterleavedData</a>.size()/<a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">while</span>( mDecodeBuffer[0].size() < nFrames</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  && mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a8ce7b29b3a2f2876528f68410260f043" title="Returns false on eof, fatal decoding error or file error Returns true on successfull frame read...">NextFrame</a>() )</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> filePos = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ac630ccfd898d5be633c755775dd7f00c">CurrentFrameFileOffset</a>();</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> (_mp3Frame>=_seekCache.size())</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  _seekCache.push_back(filePos);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> std::cout</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> << "Mp3 frame "</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> << mFramePosition << " "</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> << _mp3Frame << " R:"</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> << filePos << " E:"</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> << _seekCache[_mp3Frame] << " R-E:"</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> << int(filePos)-int(_seekCache[_mp3Frame])</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> << std::endl;</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="Assert_8hxx.html#adcb270c005eb2d28c1210743e9431c53">CLAM_WARNING</a>(filePos==_seekCache[_mp3Frame],</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="stringliteral">"MP3 indexing not matching"</span>);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#af11537ac13a2338220639a969291c002">SynthesizeCurrent</a>();</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="Assert_8hxx.html#a0013fa617be6fec21a9ad7180e7d8cff" title="An assertion is a check on an expression that must be true given that all the contracts are fullfille...">CLAM_ASSERT</a>( <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a> == MAD_NCHANNELS( &mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a2f52a9a96ccb816e810188935a1357ab">CurrentFrame</a>().header ),</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="stringliteral">"MpegAudioStream: A frame had not the expected channels."</span> );</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <a class="code" href="Assert_8hxx.html#a0013fa617be6fec21a9ad7180e7d8cff" title="An assertion is a check on an expression that must be true given that all the contracts are fullfille...">CLAM_ASSERT</a>( <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a> == mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a78f415c0007811996243cf1c785660a5">CurrentSynthesis</a>().pcm.channels,</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="stringliteral">"MpegAudioStream: Synthesis result had not the expected number of channels"</span> );</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="classint.html">TSize</a> samplesDecodedThisTime = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a78f415c0007811996243cf1c785660a5">CurrentSynthesis</a>().pcm.length;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a>; i++ )</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  {</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  mad_fixed_t* channelData = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a78f415c0007811996243cf1c785660a5">CurrentSynthesis</a>().pcm.samples[i];</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  mDecodeBuffer[i].insert( mDecodeBuffer[i].end(),</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  channelData,</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  channelData + samplesDecodedThisTime );</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  mSamplesDecoded += samplesDecodedThisTime;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  _mp3Frame++;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#ac8692702b2e5d256288194d2927b726d">mFramesLastRead</a> = mDecodeBuffer[0].size();</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a3a4170527573f5241a40856a85460693">mEOFReached</a> = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a1b8b3230cda863618a60aaa3666bf4b4">EOS</a>() && mDecodeBuffer[0].empty();</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (mDecodeBuffer[0].empty()) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a>; i++ )</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">if</span> ( mDecodeBuffer[i].size() < nFrames )</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  {</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  mDecodeBuffer[i].insert(</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  mDecodeBuffer[i].end(),</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  nFrames - mDecodeBuffer[i].size(),</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  mad_fixed_t(0) );</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  ConsumeDecodedSamples();</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordtype">void</span> MpegAudioStream::ConsumeDecodedSamples()</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  {</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">unsigned</span> nFrames = <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a2e4d3d7ae3d3a5c6f9e8da2bf71a6aef">mInterleavedData</a>.size()/<a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a>;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a>; i++ )</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordtype">unsigned</span> currOffset = 0;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">for</span> ( std::deque<mad_fixed_t>::iterator j = mDecodeBuffer[i].begin();</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  currOffset < <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a2e4d3d7ae3d3a5c6f9e8da2bf71a6aef">mInterleavedData</a>.size(); </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  j++, currOffset+=<a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a8c2bcfb7c7885eba044194f14bbd9da8">mChannels</a> )</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">double</span> sampleValue = mad_f_todouble(*j);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">// :TODO: Finding a nicer way to clamp things</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">// to the -1,1 could be necessary</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// clipping</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> ( sampleValue > 1.0 )</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  sampleValue = 1.0;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( sampleValue < -1.0 )</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  sampleValue = -1.0;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a2e4d3d7ae3d3a5c6f9e8da2bf71a6aef">mInterleavedData</a>[ currOffset + i ] = <a class="code" href="namespaceCLAM.html#ab9c6321b061069797fcc173f61e8111a">TData</a>(sampleValue);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  mDecodeBuffer[i].erase( mDecodeBuffer[i].begin(),</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  mDecodeBuffer[i].begin() + nFrames );</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a26d0baf336510345bf00b19f5894765a">mFramePosition</a> += nFrames;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a4ff8d0b7d30afaef0453f758cc7394bf"> 169</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#a4ff8d0b7d30afaef0453f758cc7394bf" title="Move data from mInterleavedData to the file.">MpegAudioStream::MemoryToDiskTransfer</a>()</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  {</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="code" href="Assert_8hxx.html#a0013fa617be6fec21a9ad7180e7d8cff" title="An assertion is a check on an expression that must be true given that all the contracts are fullfille...">CLAM_ASSERT</a>( <span class="keyword">false</span>, <span class="stringliteral">"CLAM does not encode Mpeg Audio!!!"</span>);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
<div class="line"><a name="l00174"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#ad9c5f5460f6430f6669fc90ac1c3849c"> 174</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegAudioStream.html#ad9c5f5460f6430f6669fc90ac1c3849c" title="Moves the current position to framePosition. If such functionality is not supported by the stream it ...">MpegAudioStream::SeekTo</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> framePosition)</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// Warning: two 'frames' here, mp3's and AudioStream's (items*channels)</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> (framePosition==<a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a26d0baf336510345bf00b19f5894765a">mFramePosition</a>) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">unsigned</span> mp3FrameSize = 32*MAD_NSBSAMPLES(&mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a2f52a9a96ccb816e810188935a1357ab">CurrentFrame</a>().header);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordtype">unsigned</span> targetMp3Frame = framePosition/mp3FrameSize;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  std::cout << <span class="stringliteral">"targetMp3Frame: "</span> << targetMp3Frame << std::endl;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// TODO: Jumps beyond the last played frame are too expensive to be frame accurate</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordtype">unsigned</span> maxForwarJump = _seekCache.size()+100;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span> (targetMp3Frame>maxForwarJump) targetMp3Frame=maxForwarJump;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (targetMp3Frame>=_seekCache.size())</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  {</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">// Construct the index beyond current limits, til the target frame</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  fseek(mpHandle, _seekCache[_seekCache.size()-2], SEEK_SET);</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ade8cbba0e144f0985c678286725fbad0">Init</a>();</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> mp3Frame=_seekCache.size();</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  mp3Frame<=targetMp3Frame; mp3Frame++)</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  {</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">if</span> (not mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a8ce7b29b3a2f2876528f68410260f043" title="Returns false on eof, fatal decoding error or file error Returns true on successfull frame read...">NextFrame</a>()) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> filePos = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ac630ccfd898d5be633c755775dd7f00c">CurrentFrameFileOffset</a>();</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> std::cout << "fwd "</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> << _seekCache.back() << " "</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> << filePos << " " </span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"> << int(filePos)-_seekCache.back() << std::endl;</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (filePos<=_seekCache.back()) <span class="keywordflow">continue</span>; <span class="comment">// filtering already done</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  _seekCache.push_back(filePos);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordtype">unsigned</span> skip = targetMp3Frame>4?3:0;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">unsigned</span> jumpingFrame = targetMp3Frame-skip;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  std::cout << <span class="stringliteral">"jumpingFrame:"</span> << jumpingFrame << std::endl;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  fseek(mpHandle, _seekCache[jumpingFrame], SEEK_SET);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ade8cbba0e144f0985c678286725fbad0">Init</a>();</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  _mp3Frame = targetMp3Frame;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">// TODO: Because the already buffered bins this is not true</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html#a26d0baf336510345bf00b19f5894765a">mFramePosition</a> = mp3FrameSize * _mp3Frame;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (targetMp3Frame == 0) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> previousFrameFilePos = _seekCache[targetMp3Frame-1];</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">while</span> (<span class="keyword">true</span>)</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  {</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#a8ce7b29b3a2f2876528f68410260f043" title="Returns false on eof, fatal decoding error or file error Returns true on successfull frame read...">NextFrame</a>();</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> filePos = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ac630ccfd898d5be633c755775dd7f00c">CurrentFrameFileOffset</a>();</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment"> std::cout << "seek "</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment"> << filePos << " "</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> << previousFrameFilePos << std::endl;</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">if</span> (filePos >= previousFrameFilePos) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#af11537ac13a2338220639a969291c002">SynthesizeCurrent</a>();</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> filePos = mBitstream.<a class="code" href="classCLAM_1_1AudioCodecs_1_1MpegBitstream.html#ac630ccfd898d5be633c755775dd7f00c">CurrentFrameFileOffset</a>();</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment"> std::cout << "Jump n target: " </span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"> << _mp3Frame << " "</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"> << targetMp3Frame << " "</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> << filePos << " "</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> << _seekCache[targetMp3Frame-1]</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"> << std::endl;</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// TODO: Sample accurate seek (now it is frame accurate)</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"> CLAM_ASSERT(_seekCache[targetMp3Frame-1]==filePos,</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment"> "File postions don't match");</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment"> CLAM_ASSERT(_mp3Frame==targetMp3Frame, "Seek mp3 frames don't match");</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment"> // We should synthesize the previous frame to the one we want.</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="comment">*/</span> }</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> }</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> }</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
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