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doom3-bfg/neo/sound/WaveFile.cpp
Brian Harris 5016f605b8 Initial commit
2012-11-26 12:58:24 -06:00

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/*
===========================================================================
Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#pragma hdrstop
#include "../idlib/precompiled.h"
/*
================================================================================================
Contains the WaveFile implementation.
================================================================================================
*/
#include "WaveFile.h"
/*
========================
idWaveFile::Open
Returns true if the Open was successful and the file matches the expected format. If this
returns false, there is no need to call Close.
========================
*/
bool idWaveFile::Open( const char * filename ) {
Close();
if ( filename == NULL || filename[0] == 0 ) {
return false;
}
if ( file == NULL ) {
file = fileSystem->OpenFileReadMemory( filename );
if ( file == NULL ) {
return false;
}
}
if ( file->Length() == 0 ) {
Close();
return false;
}
struct header_t {
uint32 id;
uint32 size;
uint32 format;
} header;
file->Read( &header, sizeof( header ) );
idSwap::Big( header.id );
idSwap::Little( header.size );
idSwap::Big( header.format );
if ( header.id != 'RIFF' || header.format != 'WAVE' || header.size < 4 ) {
Close();
idLib::Warning( "Header is not RIFF WAVE in %s", filename );
return false;
}
uint32 riffSize = header.size + 8;
uint32 offset = sizeof( header );
// Scan the file collecting chunks
while ( offset < riffSize ) {
struct chuckHeader_t {
uint32 id;
uint32 size;
} chunkHeader;
if ( file->Read( &chunkHeader, sizeof( chunkHeader ) ) != sizeof( chunkHeader ) ) {
// It seems like some tools have extra data after the last chunk for no apparent reason
// so don't treat this as an error
return true;
}
idSwap::Big( chunkHeader.id );
idSwap::Little( chunkHeader.size );
offset += sizeof( chunkHeader );
if ( chunks.Num() >= chunks.Max() ) {
Close();
idLib::Warning( "More than %d chunks in %s", chunks.Max(), filename );
return false;
}
chunk_t * chunk = chunks.Alloc();
chunk->id = chunkHeader.id;
chunk->size = chunkHeader.size;
chunk->offset = offset;
offset += chunk->size;
file->Seek( offset, FS_SEEK_SET );
}
return true;
}
/*
========================
idWaveFile::SeekToChunk
Seeks to the specified chunk and returns the size of the chunk or 0 if the chunk wasn't found.
========================
*/
uint32 idWaveFile::SeekToChunk( uint32 id ) {
for ( int i = 0; i < chunks.Num(); i++ ) {
if ( chunks[i].id == id ) {
file->Seek( chunks[i].offset, FS_SEEK_SET );
return chunks[i].size;
}
}
return 0;
}
/*
========================
idWaveFile::GetChunkOffset
Seeks to the specified chunk and returns the size of the chunk or 0 if the chunk wasn't found.
========================
*/
uint32 idWaveFile::GetChunkOffset( uint32 id ) {
for ( int i = 0; i < chunks.Num(); i++ ) {
if ( chunks[i].id == id ) {
return chunks[i].offset;
}
}
return 0;
}
// Used in XMA2WAVEFORMAT for per-stream data
typedef struct XMA2STREAMFORMAT {
byte Channels; // Number of channels in the stream (1 or 2)
byte RESERVED; // Reserved for future use
uint16 ChannelMask; // Spatial positions of the channels in the stream
} XMA2STREAMFORMAT;
// Legacy XMA2 format structure (big-endian byte ordering)
typedef struct XMA2WAVEFORMAT {
byte Version; // XMA encoder version that generated the file.
// Always 3 or higher for XMA2 files.
byte NumStreams; // Number of interleaved audio streams
byte RESERVED; // Reserved for future use
byte LoopCount; // Number of loop repetitions; 255 = infinite
uint32 LoopBegin; // Loop begin point, in samples
uint32 LoopEnd; // Loop end point, in samples
uint32 SampleRate; // The file's decoded sample rate
uint32 EncodeOptions; // Options for the XMA encoder/decoder
uint32 PsuedoBytesPerSec; // Used internally by the XMA encoder
uint32 BlockSizeInBytes; // Size in bytes of this file's XMA blocks (except
// possibly the last one). Always a multiple of
// 2Kb, since XMA blocks are arrays of 2Kb packets.
uint32 SamplesEncoded; // Total number of PCM samples encoded in this file
uint32 SamplesInSource; // Actual number of PCM samples in the source
// material used to generate this file
uint32 BlockCount; // Number of XMA blocks in this file (and hence
// also the number of entries in its seek table)
} XMA2WAVEFORMAT;
/*
========================
idWaveFile::ReadWaveFormat
Reads a wave format header, returns NULL if it found one and read it.
otherwise, returns a human-readable error message.
========================
*/
const char * idWaveFile::ReadWaveFormat( waveFmt_t & format ) {
memset( &format, 0, sizeof( format ) );
uint32 formatSize = SeekToChunk( waveFmt_t::id );
if ( formatSize == 0 ) {
return "No format chunk";
}
if ( formatSize < sizeof( format.basic ) ) {
return "Format chunk too small";
}
Read( &format.basic, sizeof( format.basic ) );
idSwapClass<waveFmt_t::basic_t> swap;
swap.Little( format.basic.formatTag );
swap.Little( format.basic.numChannels );
swap.Little( format.basic.samplesPerSec );
swap.Little( format.basic.avgBytesPerSec );
swap.Little( format.basic.blockSize );
swap.Little( format.basic.bitsPerSample );
if ( format.basic.formatTag == FORMAT_PCM ) {
} else if ( format.basic.formatTag == FORMAT_ADPCM ) {
Read( &format.extraSize, sizeof( format.extraSize ) );
idSwap::Little( format.extraSize );
if ( format.extraSize != sizeof( waveFmt_t::extra_t::adpcm_t ) ) {
return "Incorrect number of coefficients in ADPCM file";
}
Read( &format.extra.adpcm, sizeof( format.extra.adpcm ) );
idSwapClass<waveFmt_t::extra_t::adpcm_t> swap;
swap.Little( format.extra.adpcm.samplesPerBlock );
swap.Little( format.extra.adpcm.numCoef );
for ( int i = 0; i < format.extra.adpcm.numCoef; i++ ) {
swap.Little( format.extra.adpcm.aCoef[ i ].coef1 );
swap.Little( format.extra.adpcm.aCoef[ i ].coef2 );
}
} else if ( format.basic.formatTag == FORMAT_XMA2 ) {
Read( &format.extraSize, sizeof( format.extraSize ) );
idSwap::Little( format.extraSize );
if ( format.extraSize != sizeof( waveFmt_t::extra_t::xma2_t ) ) {
return "Incorrect chunk size in XMA2 file";
}
Read( &format.extra.xma2, sizeof( format.extra.xma2 ) );
idSwapClass<waveFmt_t::extra_t::xma2_t> swap;
swap.Little( format.extra.xma2.numStreams );
swap.Little( format.extra.xma2.channelMask );
swap.Little( format.extra.xma2.samplesEncoded );
swap.Little( format.extra.xma2.bytesPerBlock );
swap.Little( format.extra.xma2.playBegin );
swap.Little( format.extra.xma2.playLength );
swap.Little( format.extra.xma2.loopBegin );
swap.Little( format.extra.xma2.loopLength );
swap.Little( format.extra.xma2.loopCount );
swap.Little( format.extra.xma2.encoderVersion );
swap.Little( format.extra.xma2.blockCount );
} else if ( format.basic.formatTag == FORMAT_EXTENSIBLE ) {
Read( &format.extraSize, sizeof( format.extraSize ) );
idSwap::Little( format.extraSize );
if ( format.extraSize != sizeof( waveFmt_t::extra_t::extensible_t ) ) {
return "Incorrect chunk size in extensible wave file";
}
Read( &format.extra.extensible, sizeof( format.extra.extensible ) );
idSwapClass<waveFmt_t::extra_t::extensible_t> swap;
swap.Little( format.extra.extensible.validBitsPerSample );
swap.Little( format.extra.extensible.channelMask );
swap.Little( format.extra.extensible.subFormat.data1 );
swap.Little( format.extra.extensible.subFormat.data2 );
swap.Little( format.extra.extensible.subFormat.data3 );
swap.Little( format.extra.extensible.subFormat.data4 );
swap.LittleArray( format.extra.extensible.subFormat.data5, 6 );
waveFmt_t::extra_t::extensible_t::guid_t pcmGuid = {
FORMAT_PCM,
0x0000,
0x0010,
0x8000,
{ 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
};
if ( memcmp( &pcmGuid, &format.extra.extensible.subFormat, sizeof( pcmGuid ) ) != 0 ) {
return "Unsupported Extensible format";
}
} else {
return "Unknown wave format tag";
}
return NULL;
}
/*
========================
idWaveFile::ReadWaveFormatDirect
Reads a wave format header from a file ptr,
========================
*/
bool idWaveFile::ReadWaveFormatDirect( waveFmt_t & format, idFile *file ) {
file->Read( &format.basic, sizeof( format.basic ) );
idSwapClass<waveFmt_t::basic_t> swap;
swap.Little( format.basic.formatTag );
swap.Little( format.basic.numChannels );
swap.Little( format.basic.samplesPerSec );
swap.Little( format.basic.avgBytesPerSec );
swap.Little( format.basic.blockSize );
swap.Little( format.basic.bitsPerSample );
if ( format.basic.formatTag == FORMAT_PCM ) {
} else if ( format.basic.formatTag == FORMAT_ADPCM ) {
file->Read( &format.extraSize, sizeof( format.extraSize ) );
idSwap::Little( format.extraSize );
if ( format.extraSize != sizeof( waveFmt_t::extra_t::adpcm_t ) ) {
return false;
}
file->Read( &format.extra.adpcm, sizeof( format.extra.adpcm ) );
idSwapClass<waveFmt_t::extra_t::adpcm_t> swap;
swap.Little( format.extra.adpcm.samplesPerBlock );
swap.Little( format.extra.adpcm.numCoef );
for ( int i = 0; i < format.extra.adpcm.numCoef; i++ ) {
swap.Little( format.extra.adpcm.aCoef[ i ].coef1 );
swap.Little( format.extra.adpcm.aCoef[ i ].coef2 );
}
} else if ( format.basic.formatTag == FORMAT_XMA2 ) {
file->Read( &format.extraSize, sizeof( format.extraSize ) );
idSwap::Little( format.extraSize );
if ( format.extraSize != sizeof( waveFmt_t::extra_t::xma2_t ) ) {
return false;
}
file->Read( &format.extra.xma2, sizeof( format.extra.xma2 ) );
idSwapClass<waveFmt_t::extra_t::xma2_t> swap;
swap.Little( format.extra.xma2.numStreams );
swap.Little( format.extra.xma2.channelMask );
swap.Little( format.extra.xma2.samplesEncoded );
swap.Little( format.extra.xma2.bytesPerBlock );
swap.Little( format.extra.xma2.playBegin );
swap.Little( format.extra.xma2.playLength );
swap.Little( format.extra.xma2.loopBegin );
swap.Little( format.extra.xma2.loopLength );
swap.Little( format.extra.xma2.loopCount );
swap.Little( format.extra.xma2.encoderVersion );
swap.Little( format.extra.xma2.blockCount );
} else if ( format.basic.formatTag == FORMAT_EXTENSIBLE ) {
file->Read( &format.extraSize, sizeof( format.extraSize ) );
idSwap::Little( format.extraSize );
if ( format.extraSize != sizeof( waveFmt_t::extra_t::extensible_t ) ) {
return false;
}
file->Read( &format.extra.extensible, sizeof( format.extra.extensible ) );
idSwapClass<waveFmt_t::extra_t::extensible_t> swap;
swap.Little( format.extra.extensible.validBitsPerSample );
swap.Little( format.extra.extensible.channelMask );
swap.Little( format.extra.extensible.subFormat.data1 );
swap.Little( format.extra.extensible.subFormat.data2 );
swap.Little( format.extra.extensible.subFormat.data3 );
swap.Little( format.extra.extensible.subFormat.data4 );
swap.LittleArray( format.extra.extensible.subFormat.data5, 6 );
waveFmt_t::extra_t::extensible_t::guid_t pcmGuid = {
FORMAT_PCM,
0x0000,
0x0010,
0x8000,
{ 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }
};
if ( memcmp( &pcmGuid, &format.extra.extensible.subFormat, sizeof( pcmGuid ) ) != 0 ) {
return false;
}
} else {
return false;
}
return true;
}
/*
========================
idWaveFile::WriteWaveFormatDirect
Writes a wave format header to a file ptr,
========================
*/
bool idWaveFile::WriteWaveFormatDirect( waveFmt_t & format, idFile *file ) {
//idSwapClass<waveFmt_t::basic_t> swap;
//swap.Little( format.basic.formatTag );
//swap.Little( format.basic.numChannels );
//swap.Little( format.basic.samplesPerSec );
//swap.Little( format.basic.avgBytesPerSec );
//swap.Little( format.basic.blockSize );
//swap.Little( format.basic.bitsPerSample );
file->Write( &format.basic, sizeof( format.basic ) );
if ( format.basic.formatTag == FORMAT_PCM ) {
//file->Write( &format.basic, sizeof( format.basic ) );
} else if ( format.basic.formatTag == FORMAT_ADPCM ) {
//file->Write( &format.basic, sizeof( format.basic ) );
file->Write( &format.extraSize, sizeof( format.extraSize ) );
file->Write( &format.extra.adpcm, sizeof( format.extra.adpcm ) );
} else if ( format.basic.formatTag == FORMAT_XMA2 ) {
//file->Write( &format.basic, sizeof( format.basic ) );
file->Write( &format.extraSize, sizeof( format.extraSize ) );
file->Write( &format.extra.xma2, sizeof( format.extra.xma2 ) );
} else if ( format.basic.formatTag == FORMAT_EXTENSIBLE ) {
//file->Write( &format.basic, sizeof( format.basic ) );
file->Write( &format.extraSize, sizeof( format.extraSize ) );
file->Write( &format.extra.extensible, sizeof( format.extra.extensible ) );
} else {
return false;
}
return true;
}
/*
========================
idWaveFile::WriteWaveFormatDirect
Writes a wave format header to a file ptr,
========================
*/
bool idWaveFile::WriteSampleDataDirect( idList< sampleData_t > & sampleData, idFile * file ) {
static const uint32 sample = 'smpl';
file->WriteBig( sample );
uint32 samplerData = sampleData.Num() * 24;
uint32 chunkSize = 36 + samplerData;
uint32 zero = 0;
uint32 numSamples = sampleData.Num();
file->Write( &chunkSize, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &numSamples, sizeof( uint32 ) );
file->Write( &samplerData, sizeof( uint32 ) );
for ( int i = 0; i < sampleData.Num(); ++i ) {
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &sampleData[ i ].start, sizeof( uint32 ) );
file->Write( &sampleData[ i ].end, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
file->Write( &zero, sizeof( uint32 ) );
}
return true;
}
/*
========================
idWaveFile::WriteWaveFormatDirect
Writes a data chunk to a file ptr
========================
*/
bool idWaveFile::WriteDataDirect( char * _data, uint32 size, idFile * file ) {
static const uint32 data = 'data';
file->WriteBig( data );
file->Write( &size, sizeof( uint32 ) );
file->WriteBigArray( _data, size );
return true;
}
/*
========================
idWaveFile::WriteWaveFormatDirect
Writes a wave header to a file ptr,
========================
*/
bool idWaveFile::WriteHeaderDirect( uint32 fileSize, idFile * file ) {
static const uint32 riff = 'RIFF';
static const uint32 wave = 'WAVE';
file->WriteBig( riff );
file->WriteBig( fileSize );
file->WriteBig( wave );
return true;
}
/*
========================
idWaveFile::ReadLoopPoint
Reads a loop point from a 'smpl' chunk in a wave file, returns 0 if none are found.
========================
*/
bool idWaveFile::ReadLoopData( int & start, int & end ) {
uint32 chunkSize = SeekToChunk( samplerChunk_t::id );
if ( chunkSize < sizeof( samplerChunk_t ) ) {
return false;
}
samplerChunk_t smpl;
Read( &smpl, sizeof( smpl ) );
idSwap::Little( smpl.numSampleLoops );
if ( smpl.numSampleLoops < 1 ) {
return false; // this is possible returning false lets us know there are more then 1 sample look in the file and is not appropriate for traditional looping
}
sampleData_t smplData;
Read( &smplData, sizeof( smplData ) );
idSwap::Little( smplData.start );
idSwap::Little( smplData.end );
if ( smplData.type != 0 ) {
idLib::Warning( "Invalid loop type in %s", file->GetName() );
return false;
}
start = smplData.start;
end = smplData.end;
return true;
}
/*
========================
idWaveFile::Close
Closes the file and frees resources.
========================
*/
void idWaveFile::Close() {
if ( file != NULL ) {
delete file;
file = NULL;
}
chunks.SetNum( 0 );
}
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