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/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the License.html file in the root of the source tree.
*/
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//
// Source: http://trac.musepack.net/trac/wiki/SV8Specification
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//---------------------------------------------------------------------------
// Pre-compilation
#include "MediaInfo/PreComp.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Setup.h"
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#if defined(MEDIAINFO_MPCSV8_YES)
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Audio/File_MpcSv8.h"
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//***************************************************************************
// Infos
//***************************************************************************
//---------------------------------------------------------------------------
extern const int16u Mpc_SampleFreq[];
//***************************************************************************
// Constants
//***************************************************************************
//---------------------------------------------------------------------------
namespace Elements
{
const int32u AP=0x4150;
const int32u CT=0x4354;
const int32u EI=0x4549;
const int32u RG=0x5247;
const int32u SE=0x5345;
const int32u SH=0x5348;
const int32u SO=0x534F;
const int32u ST=0x5354;
}
//***************************************************************************
// Constructor/Destructor
//***************************************************************************
//---------------------------------------------------------------------------
File_MpcSv8::File_MpcSv8()
:File__Analyze(), File__Tags_Helper()
{
//File__Tags_Helper
Base=this;
}
//***************************************************************************
// Static stuff
//***************************************************************************
//---------------------------------------------------------------------------
bool File_MpcSv8::FileHeader_Begin()
{
//Element_Size
if (Buffer_Size<4)
return false; //Must wait for more data
if (CC4(Buffer)!=0x4D50434B) //"MPCK"
{
File__Tags_Helper::Reject("Musepack SV8");
return false;
}
//All should be OK...
return true;
}
//***************************************************************************
// Buffer - File header
//***************************************************************************
//---------------------------------------------------------------------------
void File_MpcSv8::FileHeader_Parse()
{
//Parsing
Skip_C4( "Magic Number");
FILLING_BEGIN();
File__Tags_Helper::Accept("MpcSv8");
File__Tags_Helper::Stream_Prepare(Stream_Audio);
Fill(Stream_Audio, 0, Audio_Format, "Musepack SV8");
Fill(Stream_Audio, 0, Audio_Codec, "SV8");
FILLING_END();
}
//***************************************************************************
// Buffer - Per element
//***************************************************************************
//---------------------------------------------------------------------------
bool File_MpcSv8::Header_Begin()
{
//Tags
if (!File__Tags_Helper::Header_Begin())
return false;
return true;
}
//---------------------------------------------------------------------------
void File_MpcSv8::Header_Parse()
{
//Parsing
int64u Size;
int16u Key;
Get_C2 (Key, "Key");
Get_VS (Size, "Size");
//Filling
Header_Fill_Code(Key, Ztring().From_CC4(Key<<16)); //Quick filling for CC2 with text
Header_Fill_Size(Key==Elements::AP?Element_Offset:Size); //We don't need the data of audio packet, and we will stop here...
}
//***************************************************************************
// Elements
//***************************************************************************
//---------------------------------------------------------------------------
void File_MpcSv8::Data_Parse()
{
#define CASE_INFO(_NAME, _DETAIL) \
case Elements::_NAME : Element_Info1(_DETAIL); _NAME(); break;
//Parsing
switch (Element_Code)
{
CASE_INFO(AP, "Audio Packet");
CASE_INFO(CT, "Chapter-Tag");
CASE_INFO(EI, "Encoder Info");
CASE_INFO(RG, "Replay Gain");
CASE_INFO(SE, "Stream End");
CASE_INFO(SH, "Stream Header");
CASE_INFO(SO, "Seek Table Offset");
CASE_INFO(ST, "Seek Table");
default : Skip_XX(Element_Size, "Data");
}
}
//***************************************************************************
// Elements
//***************************************************************************
//---------------------------------------------------------------------------
void File_MpcSv8::AP()
{
//No more need data
File__Tags_Helper::Finish("MpcSv8");
}
//---------------------------------------------------------------------------
void File_MpcSv8::EI()
{
//Parsing
int8u Quality, Version1, Version2, Version3;
bool PNS;
BS_Begin();
Get_S1 (7, Quality, "Quality");
Get_SB ( PNS, "PNS");
BS_End();
Get_B1 (Version1, "Major version");
Get_B1 (Version2, "Minor version");
Get_B1 (Version3, "Build");
}
//---------------------------------------------------------------------------
void File_MpcSv8::RG()
{
//Parsing
int16u TitleGain, AlbumGain;
Skip_B1( "Version");
Get_L2 (TitleGain, "Title gain"); Param_Info3(((float32)((int16s)TitleGain))/1000, 2, " dB");
Skip_L2( "Title peak");
Get_L2 (AlbumGain, "Album gain"); Param_Info3(((float32)((int16s)TitleGain))/1000, 2, " dB");
Skip_L2( "Album peak");
}
//---------------------------------------------------------------------------
void File_MpcSv8::SH()
{
//Parsing
int64u SampleCount;
int8u Version, SampleFrequency, ChannelCount;
bool MidSideStereo;
Skip_B4( "CRC32");
Get_B1 (Version, "Version");
Get_VS (SampleCount, "Sample count");
Skip_VS( "Beginning silence");
BS_Begin();
Get_S1 (3, SampleFrequency, "Sample frequency"); Param_Info1(Mpc_SampleFreq[SampleFrequency]);
Skip_S1(5, "Max used bands");
Get_S1 (4, ChannelCount, "Channel count");
Get_SB ( MidSideStereo, "Mid side stereo used");
Skip_S1(3, "Audio block frames");
BS_End();
//Filling
FILLING_BEGIN();
Fill(Stream_Audio, 0, Audio_SamplingRate, Mpc_SampleFreq[SampleFrequency]);
if (SampleCount)
{
Fill(Stream_Audio, 0, Audio_SamplingCount, SampleCount);
Fill(Stream_Audio, 0, Audio_Duration, SampleCount*1000/Mpc_SampleFreq[SampleFrequency]);
Fill(Stream_Audio, 0, Audio_BitRate, File_Size*8*Mpc_SampleFreq[SampleFrequency]/SampleCount); //Should be more precise...
}
Fill(Stream_Audio, 0, Audio_BitDepth, 16); //MPC support only 16 bits
FILLING_END();
}
//---------------------------------------------------------------------------
void File_MpcSv8::SO()
{
//Parsing
Skip_VS( "Offset");
}
} //NameSpace
#endif //MEDIAINFO_MPCSV8_YES
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