sm64pc/tools/audiofile-0.3.6/libaudiofile/IRCAM.cpp

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2020-05-05 12:15:53 +00:00
/*
Audio File Library
Copyright (C) 2001, Silicon Graphics, Inc.
Copyright (C) 2011, Michael Pruett <michael@68k.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA
*/
/*
IRCAM.cpp
This file contains routines for reading and writing
Berkeley/IRCAM/CARL sound files.
*/
#include "config.h"
#include "IRCAM.h"
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "File.h"
#include "Marker.h"
#include "Setup.h"
#include "Track.h"
#include "byteorder.h"
#include "util.h"
enum
{
SF_CHAR = 1,
SF_SHORT = 2,
SF_24INT = 3,
SF_LONG = 0x40004,
SF_FLOAT = 4,
SF_DOUBLE = 8,
SF_ALAW = 0x10001,
SF_ULAW = 0x20001
};
#define SF_MAXCHAN 4
#define SF_MAXCOMMENT 512
#define SF_MINCOMMENT 256
enum
{
SF_END,
SF_MAXAMP,
SF_COMMENT,
SF_LINKCODE
};
#define SIZEOF_BSD_HEADER 1024
static const uint8_t ircam_vax_le_magic[4] = {0x64, 0xa3, 0x01, 0x00},
ircam_vax_be_magic[4] = {0x00, 0x01, 0xa3, 0x64},
ircam_sun_be_magic[4] = {0x64, 0xa3, 0x02, 0x00},
ircam_sun_le_magic[4] = {0x00, 0x02, 0xa3, 0x64},
ircam_mips_le_magic[4] = {0x64, 0xa3, 0x03, 0x00},
ircam_mips_be_magic[4] = {0x00, 0x03, 0xa3, 0x64},
ircam_next_be_magic[4] = {0x64, 0xa3, 0x04, 0x00},
ircam_next_le_magic[4] = {0x00, 0x04, 0xa3, 0x64};
static const _AFfilesetup ircam_default_filesetup =
{
_AF_VALID_FILESETUP, /* valid */
AF_FILE_IRCAM, /* fileFormat */
true, /* trackSet */
true, /* instrumentSet */
true, /* miscellaneousSet */
1, /* trackCount */
NULL, /* tracks */
0, /* instrumentCount */
NULL, /* instruments */
0, /* miscellaneousCount */
NULL /* miscellaneous */
};
const int _af_ircam_compression_types[_AF_IRCAM_NUM_COMPTYPES] =
{
AF_COMPRESSION_G711_ULAW,
AF_COMPRESSION_G711_ALAW
};
bool IRCAMFile::recognize(File *fh)
{
uint8_t buffer[4];
fh->seek(0, File::SeekFromBeginning);
if (fh->read(buffer, 4) != 4)
return false;
/* Check to see if the file's magic number matches. */
if (!memcmp(buffer, ircam_vax_le_magic, 4) ||
!memcmp(buffer, ircam_vax_be_magic, 4) ||
!memcmp(buffer, ircam_sun_be_magic, 4) ||
!memcmp(buffer, ircam_sun_le_magic, 4) ||
!memcmp(buffer, ircam_mips_le_magic, 4) ||
!memcmp(buffer, ircam_mips_be_magic, 4) ||
!memcmp(buffer, ircam_next_be_magic, 4) ||
!memcmp(buffer, ircam_next_le_magic, 4))
{
return true;
}
return false;
}
AFfilesetup IRCAMFile::completeSetup(AFfilesetup setup)
{
if (setup->trackSet && setup->trackCount != 1)
{
_af_error(AF_BAD_NUMTRACKS, "BICSF file must have 1 track");
return AF_NULL_FILESETUP;
}
TrackSetup *track = &setup->tracks[0];
if (track->sampleFormatSet)
{
if (track->f.isUnsigned())
{
_af_error(AF_BAD_SAMPFMT,
"BICSF format does not support unsigned data");
return AF_NULL_FILESETUP;
}
if (track->f.isSigned() &&
track->f.sampleWidth != 8 &&
track->f.sampleWidth != 16 &&
track->f.sampleWidth != 24 &&
track->f.sampleWidth != 32)
{
_af_error(AF_BAD_WIDTH,
"BICSF format supports only 8-, 16-, 24-, or 32-bit "
"two's complement audio data");
return AF_NULL_FILESETUP;
}
}
if (track->rateSet && track->f.sampleRate <= 0.0)
{
_af_error(AF_BAD_RATE,
"invalid sample rate %.30g for BICSF file",
track->f.sampleRate);
return AF_NULL_FILESETUP;
}
if (track->channelCountSet && track->f.channelCount != 1 &&
track->f.channelCount != 2 && track->f.channelCount != 4)
{
_af_error(AF_BAD_CHANNELS,
"invalid channel count (%d) for BICSF format "
"(1, 2, or 4 channels only)",
track->f.channelCount);
return AF_NULL_FILESETUP;
}
if (track->compressionSet &&
track->f.compressionType != AF_COMPRESSION_NONE &&
track->f.compressionType != AF_COMPRESSION_G711_ULAW &&
track->f.compressionType != AF_COMPRESSION_G711_ALAW)
{
_af_error(AF_BAD_NOT_IMPLEMENTED,
"BICSF format does not support compression type %d",
track->f.compressionType);
return AF_NULL_FILESETUP;
}
if (track->aesDataSet)
{
_af_error(AF_BAD_FILESETUP, "BICSF file cannot have AES data");
return AF_NULL_FILESETUP;
}
if (track->markersSet && track->markerCount != 0)
{
_af_error(AF_BAD_NUMMARKS, "BICSF format does not support markers");
return AF_NULL_FILESETUP;
}
if (setup->instrumentSet && setup->instrumentCount != 0)
{
_af_error(AF_BAD_NUMINSTS, "BICSF format does not support instruments");
return AF_NULL_FILESETUP;
}
/* XXXmpruett: We don't support miscellaneous chunks for now. */
if (setup->miscellaneousSet && setup->miscellaneousCount != 0)
{
_af_error(AF_BAD_NOT_IMPLEMENTED, "BICSF format does not currently support miscellaneous chunks");
return AF_NULL_FILESETUP;
}
return _af_filesetup_copy(setup, &ircam_default_filesetup, true);
}
status IRCAMFile::readInit(AFfilesetup setup)
{
float maxAmp = 1.0;
m_fh->seek(0, File::SeekFromBeginning);
uint8_t magic[4];
if (m_fh->read(magic, 4) != 4)
{
_af_error(AF_BAD_READ, "Could not read BICSF file header");
return AF_FAIL;
}
if (memcmp(magic, ircam_vax_le_magic, 4) != 0 &&
memcmp(magic, ircam_vax_be_magic, 4) != 0 &&
memcmp(magic, ircam_sun_be_magic, 4) != 0 &&
memcmp(magic, ircam_sun_le_magic, 4) != 0 &&
memcmp(magic, ircam_mips_le_magic, 4) != 0 &&
memcmp(magic, ircam_mips_be_magic, 4) != 0 &&
memcmp(magic, ircam_next_be_magic, 4) != 0 &&
memcmp(magic, ircam_next_le_magic, 4) != 0)
{
_af_error(AF_BAD_FILEFMT,
"file is not a BICSF file (bad magic number)");
return AF_FAIL;
}
// Check whether the file's magic number indicates little-endian data.
bool isLittleEndian = !memcmp(magic, ircam_vax_le_magic, 4) ||
!memcmp(magic, ircam_sun_le_magic, 4) ||
!memcmp(magic, ircam_mips_le_magic, 4) ||
!memcmp(magic, ircam_next_le_magic, 4);
setFormatByteOrder(isLittleEndian ? AF_BYTEORDER_LITTLEENDIAN :
AF_BYTEORDER_BIGENDIAN);
float rate;
readFloat(&rate);
uint32_t channels;
readU32(&channels);
uint32_t packMode;
readU32(&packMode);
Track *track = allocateTrack();
if (!track)
return AF_FAIL;
track->f.sampleRate = rate;
track->f.compressionType = AF_COMPRESSION_NONE;
if (isLittleEndian)
track->f.byteOrder = AF_BYTEORDER_LITTLEENDIAN;
else
track->f.byteOrder = AF_BYTEORDER_BIGENDIAN;
if (channels != 1 && channels != 2 && channels != 4)
{
_af_error(AF_BAD_FILEFMT,
"invalid channel count (%d) for BICSF format (1, 2, or 4 only)",
channels);
return AF_FAIL;
}
track->f.channelCount = channels;
track->f.framesPerPacket = 1;
switch (packMode)
{
case SF_CHAR:
track->f.byteOrder = _AF_BYTEORDER_NATIVE;
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.sampleWidth = 8;
break;
case SF_SHORT:
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.sampleWidth = 16;
break;
case SF_24INT:
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.sampleWidth = 24;
break;
case SF_LONG:
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.sampleWidth = 32;
break;
case SF_FLOAT:
track->f.sampleFormat = AF_SAMPFMT_FLOAT;
track->f.sampleWidth = 32;
break;
case SF_DOUBLE:
track->f.sampleFormat = AF_SAMPFMT_DOUBLE;
track->f.sampleWidth = 64;
break;
case SF_ALAW:
track->f.compressionType = AF_COMPRESSION_G711_ALAW;
track->f.byteOrder = _AF_BYTEORDER_NATIVE;
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.sampleWidth = 16;
track->f.bytesPerPacket = channels;
break;
case SF_ULAW:
track->f.compressionType = AF_COMPRESSION_G711_ULAW;
track->f.byteOrder = _AF_BYTEORDER_NATIVE;
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.sampleWidth = 16;
track->f.bytesPerPacket = channels;
break;
default:
_af_error(AF_BAD_NOT_IMPLEMENTED,
"BICSF data format %d not supported", packMode);
return AF_FAIL;
}
if (track->f.isUncompressed())
track->f.computeBytesPerPacketPCM();
if (_af_set_sample_format(&track->f, track->f.sampleFormat,
track->f.sampleWidth) == AF_FAIL)
{
return AF_FAIL;
}
if (track->f.sampleFormat == AF_SAMPFMT_FLOAT)
track->f.pcm.slope = maxAmp;
track->data_size = m_fh->length() - SIZEOF_BSD_HEADER;
track->computeTotalFileFrames();
track->fpos_first_frame = SIZEOF_BSD_HEADER;
track->nextfframe = 0;
track->fpos_next_frame = track->fpos_first_frame;
return AF_SUCCEED;
}
/* We write IRCAM files using the native byte order. */
status IRCAMFile::writeInit(AFfilesetup setup)
{
if (initFromSetup(setup) == AF_FAIL)
return AF_FAIL;
uint32_t dataOffset = SIZEOF_BSD_HEADER;
Track *track = getTrack();
track->totalfframes = 0;
track->fpos_first_frame = dataOffset;
track->nextfframe = 0;
track->fpos_next_frame = track->fpos_first_frame;
/* Choose the magic number appropriate for the byte order. */
const uint8_t *magic;
#ifdef WORDS_BIGENDIAN
magic = ircam_sun_be_magic;
#else
magic = ircam_vax_le_magic;
#endif
uint32_t channels = track->f.channelCount;
float rate = track->f.sampleRate;
if (track->f.compressionType != AF_COMPRESSION_NONE &&
track->f.compressionType != AF_COMPRESSION_G711_ULAW &&
track->f.compressionType != AF_COMPRESSION_G711_ALAW)
{
_af_error(AF_BAD_COMPTYPE,
"unsupported compression type %d in IRCAM sound file",
track->f.compressionType);
return AF_FAIL;
}
uint32_t packMode = 0;
if (track->f.compressionType == AF_COMPRESSION_G711_ULAW)
packMode = SF_ULAW;
else if (track->f.compressionType == AF_COMPRESSION_G711_ALAW)
packMode = SF_ALAW;
else if (track->f.isSigned())
{
switch (track->f.bytesPerSample(false))
{
case 1: packMode = SF_CHAR; break;
case 2: packMode = SF_SHORT; break;
case 3: packMode = SF_24INT; break;
case 4: packMode = SF_LONG; break;
default:
_af_error(AF_BAD_SAMPFMT,
"unsupported sample width %d for two's complement BICSF file",
track->f.sampleWidth);
return AF_FAIL;
}
}
else if (track->f.isFloat())
{
if (track->f.sampleWidth == 32)
packMode = SF_FLOAT;
else if (track->f.sampleWidth == 64)
packMode = SF_DOUBLE;
else
{
_af_error(AF_BAD_SAMPFMT,
"unsupported sample width %d for BICSF file",
track->f.sampleWidth);
return AF_FAIL;
}
}
else if (track->f.isUnsigned())
{
_af_error(AF_BAD_SAMPFMT, "BICSF format does not support unsigned integer audio data");
return AF_FAIL;
}
m_fh->seek(0, File::SeekFromBeginning);
m_fh->write(magic, 4);
writeFloat(&rate);
writeU32(&channels);
writeU32(&packMode);
/* Zero the entire description block. */
uint8_t zeros[SIZEOF_BSD_HEADER];
memset(zeros, 0, SIZEOF_BSD_HEADER);
m_fh->write(zeros, SIZEOF_BSD_HEADER - 4*4);
return AF_SUCCEED;
}
status IRCAMFile::update()
{
return AF_SUCCEED;
}