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1 #include "StdAfx.h"
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2 #include "packet_decoder_mp3_common.h"
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3 #include "mp3_utils.h"
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4
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5 unsigned packet_decoder_mp3_common::parseDecoderSetup( const GUID & p_owner,t_size p_param1,const void * p_param2,t_size p_param2size )
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6 {
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7 if (p_owner == owner_MP3) return 3;
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8 else if (p_owner == owner_MP2) return 2;
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9 else if (p_owner == owner_MP1) return 1;
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10 else if (p_owner == owner_MP4)
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11 {
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12 switch(p_param1)
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13 {
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14 case 0x6B:
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15 return 3;
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16 break;
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17 case 0x69:
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18 return 3;
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19 break;
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20 default:
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21 return 0;
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22 }
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23 }
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24 else if (p_owner == owner_matroska)
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25 {
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26 if (p_param2size==sizeof(matroska_setup))
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27 {
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28 const matroska_setup * setup = (const matroska_setup*) p_param2;
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29 if (!strcmp(setup->codec_id,"A_MPEG/L3")) return 3;
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30 else if (!strcmp(setup->codec_id,"A_MPEG/L2")) return 2;
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31 else if (!strcmp(setup->codec_id,"A_MPEG/L1")) return 1;
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32 else return 0;
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33 }
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34 else return 0;
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35 }
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36 else return 0;
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37 }
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38
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39 unsigned packet_decoder_mp3_common::layer_from_frame(const void * frame, size_t size) {
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40 using namespace mp3_utils;
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41 TMPEGFrameInfo info;
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42 if (!ParseMPEGFrameHeader(info, frame, size)) throw exception_io_data();
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43 return info.m_layer;
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44 }
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