/*
Audio File Library
Copyright (C) 1998-2000, 2003, Michael Pruett <michael@68k.org>
Copyright (C) 2000, Silicon Graphics, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307 USA.
*/
/*
aiff.c
This file contains routines for parsing AIFF and AIFF-C sound
files.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#include "extended.h"
#include "audiofile.h"
#include "util.h"
#include "afinternal.h"
#include "byteorder.h"
#include "aiff.h"
#include "setup.h"
#include "track.h"
#include "marker.h"
static status ParseFVER (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size);
static status ParseAESD (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size);
static status ParseMiscellaneous (AFfilehandle file, AFvirtualfile *fh,
u_int32_t type, size_t size);
static status ParseINST (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size);
static status ParseMARK (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size);
static status ParseCOMM (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size);
static status ParseSSND (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size);
_InstParamInfo _af_aiff_inst_params[_AF_AIFF_NUM_INSTPARAMS] =
{
{ AF_INST_MIDI_BASENOTE, AU_PVTYPE_LONG, "MIDI base note", {60} },
{ AF_INST_NUMCENTS_DETUNE, AU_PVTYPE_LONG, "Detune in cents", {0} },
{ AF_INST_MIDI_LOVELOCITY, AU_PVTYPE_LONG, "Low velocity", {1} },
{ AF_INST_MIDI_HIVELOCITY, AU_PVTYPE_LONG, "High velocity", {127} },
{ AF_INST_MIDI_LONOTE, AU_PVTYPE_LONG, "Low note", {0} },
{ AF_INST_MIDI_HINOTE, AU_PVTYPE_LONG, "High note", {127} },
{ AF_INST_NUMDBS_GAIN, AU_PVTYPE_LONG, "Gain in dB", {0} },
{ AF_INST_SUSLOOPID, AU_PVTYPE_LONG, "Sustain loop id", {0} },
{ AF_INST_RELLOOPID, AU_PVTYPE_LONG, "Release loop id", {0} }
};
int _af_aiffc_compression_types[_AF_AIFF_NUM_COMPTYPES] =
{
AF_COMPRESSION_G711_ULAW,
AF_COMPRESSION_G711_ALAW
};
_AFfilesetup _af_aiff_default_filesetup =
{
_AF_VALID_FILESETUP, /* valid */
AF_FILE_AIFF, /* fileFormat */
AF_TRUE, /* trackSet */
AF_TRUE, /* instrumentSet */
AF_TRUE, /* miscellaneousSet */
1, /* trackCount */
NULL, /* tracks */
1, /* instrumentCount */
NULL, /* instruments */
0, /* miscellaneousCount */
NULL /* miscellaneous */
};
/*
FVER chunks are only present in AIFF-C files.
*/
static status ParseFVER (AFfilehandle file, AFvirtualfile *fh, u_int32_t type, size_t size)
{
u_int32_t timestamp;
assert(!memcmp(&type, "FVER", 4));
af_fread(×tamp, sizeof (u_int32_t), 1, fh);
timestamp = BENDIAN_TO_HOST_INT32(timestamp);
/* timestamp holds the number of seconds since January 1, 1904. */
return AF_SUCCEED;
}
/*
Parse AES recording data.
*/
static status ParseAESD (AFfilehandle file, AFvirtualfile *fh, u_int32_t type, size_t size)
{
_Track *track;
unsigned char aesChannelStatusData[24];
assert(!memcmp(&type, "AESD", 4));
assert(size == 24);
track = _af_filehandle_get_track(file, AF_DEFAULT_TRACK);
track->hasAESData = AF_TRUE;
/*
Try to read 24 bytes of AES nonaudio data from the file.
Fail if the file disappoints.
*/
if (af_fread(aesChannelStatusData, 1, 24, fh) != 24)
return AF_FAIL;
memcpy(track->aesData, aesChannelStatusData, 24);
return AF_SUCCEED;
}
/*
Parse miscellaneous data chunks such as name, author, copyright,
and annotation chunks.
*/
static status ParseMiscellaneous (AFfilehandle file, AFvirtualfile *fh,
u_int32_t type, size_t size)
{
int misctype = AF_MISC_UNRECOGNIZED;
assert(!memcmp(&type, "NAME", 4) || !memcmp(&type, "AUTH", 4) ||
!memcmp(&type, "(c) ", 4) || !memcmp(&type, "ANNO", 4) ||
!memcmp(&type, "APPL", 4) || !memcmp(&type, "MIDI", 4));
/* Skip zero-length miscellaneous chunks. */
if (size == 0)
return AF_FAIL;
file->miscellaneousCount++;
file->miscellaneous = (_Miscellaneous *) _af_realloc(file->miscellaneous,
file->miscellaneousCount * sizeof (_Miscellaneous));
if (!memcmp(&type, "NAME", 4))
misctype = AF_MISC_NAME;
else if (!memcmp(&type, "AUTH", 4))
misctype = AF_MISC_AUTH;
else if (!memcmp(&type, "(c) ", 4))
misctype = AF_MISC_COPY;
else if (!memcmp(&type, "ANNO", 4))
misctype = AF_MISC_ANNO;
else if (!memcmp(&type, "APPL", 4))
misctype = AF_MISC_APPL;
else if (!memcmp(&type, "MIDI", 4))
misctype = AF_MISC_MIDI;
file->miscellaneous[file->miscellaneousCount - 1].id = file->miscellaneousCount;
file->miscellaneous[file->miscellaneousCount - 1].type = misctype;
file->miscellaneous[file->miscellaneousCount - 1].size = size;
file->miscellaneous[file->miscellaneousCount - 1].position = 0;
file->miscellaneous[file->miscellaneousCount - 1].buffer = _af_malloc(size);
af_fread(file->miscellaneous[file->miscellaneousCount - 1].buffer,
size, 1, file->fh);
return AF_SUCCEED;
}
/*
Parse instrument chunks, which contain information about using
sound data as a sampled instrument.
*/
static status ParseINST (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size)
{
_Instrument *instrument;
u_int8_t baseNote;
int8_t detune;
u_int8_t lowNote, highNote, lowVelocity, highVelocity;
int16_t gain;
u_int16_t sustainLoopPlayMode, sustainLoopBegin, sustainLoopEnd;
u_int16_t releaseLoopPlayMode, releaseLoopBegin, releaseLoopEnd;
assert(!memcmp(&type, "INST", 4));
instrument = (_Instrument *) _af_calloc(1, sizeof (_Instrument));
instrument->id = AF_DEFAULT_INST;
instrument->values = (AFPVu *) _af_calloc(_AF_AIFF_NUM_INSTPARAMS, sizeof (AFPVu));
instrument->loopCount = 2;
instrument->loops = (_Loop *) _af_calloc(2, sizeof (_Loop));
file->instrumentCount = 1;
file->instruments = instrument;
af_fread(&baseNote, 1, 1, fh);
af_fread(&detune, 1, 1, fh);
af_fread(&lowNote, 1, 1, fh);
af_fread(&highNote, 1, 1, fh);
af_fread(&lowVelocity, 1, 1, fh);
af_fread(&highVelocity, 1, 1, fh);
af_fread(&gain, 2, 1, fh);
gain = BENDIAN_TO_HOST_INT16(gain);
#ifdef DEBUG
printf("baseNote/detune/lowNote/highNote/lowVelocity/highVelocity/gain:"
" %d %d %d %d %d %d %d\n",
baseNote, detune, lowNote, highNote, lowVelocity, highVelocity,
gain);
#endif
instrument->values[0].l = baseNote;
instrument->values[1].l = detune;
instrument->values[2].l = lowVelocity;
instrument->values[3].l = highVelocity;
instrument->values[4].l = lowNote;
instrument->values[5].l = highNote;
instrument->values[6].l = gain;
instrument->values[7].l = 1; /* sustain loop id */
instrument->values[8].l = 2; /* release loop id */
af_fread(&sustainLoopPlayMode, sizeof (u_int16_t), 1, fh);
sustainLoopPlayMode = BENDIAN_TO_HOST_INT16(sustainLoopPlayMode);
af_fread(&sustainLoopBegin, sizeof (u_int16_t), 1, fh);
sustainLoopBegin = BENDIAN_TO_HOST_INT16(sustainLoopBegin);
af_fread(&sustainLoopEnd, sizeof (u_int16_t), 1, fh);
sustainLoopEnd = BENDIAN_TO_HOST_INT16(sustainLoopEnd);
af_fread(&releaseLoopPlayMode, sizeof (u_int16_t), 1, fh);
releaseLoopPlayMode = BENDIAN_TO_HOST_INT16(releaseLoopPlayMode);
af_fread(&releaseLoopBegin, sizeof (u_int16_t), 1, fh);
releaseLoopBegin = BENDIAN_TO_HOST_INT16(releaseLoopBegin);
af_fread(&releaseLoopEnd, sizeof (u_int16_t), 1, fh);
releaseLoopEnd = BENDIAN_TO_HOST_INT16(releaseLoopEnd);
#ifdef DEBUG
printf("sustain loop: mode %d, begin %d, end %d\n",
sustainLoopPlayMode, sustainLoopBegin, sustainLoopEnd);
printf("release loop: mode %d, begin %d, end %d\n",
releaseLoopPlayMode, releaseLoopBegin, releaseLoopEnd);
#endif
instrument->loops[0].id = 1;
instrument->loops[0].mode = sustainLoopPlayMode;
instrument->loops[0].beginMarker = sustainLoopBegin;
instrument->loops[0].endMarker = sustainLoopEnd;
instrument->loops[1].id = 2;
instrument->loops[1].mode = releaseLoopPlayMode;
instrument->loops[1].beginMarker = releaseLoopBegin;
instrument->loops[1].endMarker = releaseLoopEnd;
return AF_SUCCEED;
}
/*
Parse marker chunks, which contain the positions and names of loop markers.
*/
static status ParseMARK (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size)
{
_Track *track;
int i;
u_int16_t numMarkers;
assert(!memcmp(&type, "MARK", 4));
track = _af_filehandle_get_track(file, AF_DEFAULT_TRACK);
af_fread(&numMarkers, sizeof (u_int16_t), 1, fh);
numMarkers = BENDIAN_TO_HOST_INT16(numMarkers);
track->markerCount = numMarkers;
if (numMarkers)
track->markers = _af_marker_new(numMarkers);
for (i=0; i<numMarkers; i++)
{
u_int16_t markerID = 0;
u_int32_t markerPosition = 0;
u_int8_t sizeByte = 0;
char *markerName = NULL;
af_fread(&markerID, sizeof (u_int16_t), 1, fh);
markerID = BENDIAN_TO_HOST_INT16(markerID);
af_fread(&markerPosition, sizeof (u_int32_t), 1, fh);
markerPosition = BENDIAN_TO_HOST_INT32(markerPosition);
af_fread(&sizeByte, sizeof (unsigned char), 1, fh);
markerName = (char *) _af_malloc(sizeByte + 1);
af_fread(markerName, sizeof (unsigned char), sizeByte, fh);
markerName[sizeByte] = '\0';
#ifdef DEBUG
printf("marker id: %d, position: %d, name: %s\n",
markerID, markerPosition, markerName);
printf("size byte: %d\n", sizeByte);
#endif
/*
If sizeByte is even, then 1+sizeByte (the length
of the string) is odd. Skip an extra byte to
make it even.
*/
if ((sizeByte % 2) == 0)
af_fseek(fh, 1, SEEK_CUR);
track->markers[i].id = markerID;
track->markers[i].position = markerPosition;
track->markers[i].name = markerName;
track->markers[i].comment = _af_strdup("");
}
return AF_SUCCEED;
}
/*
Parse common data chunks, which contain information regarding the
sampling rate, the number of sample frames, and the number of
sound channels.
*/
static status ParseCOMM (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size)
{
_Track *track;
u_int16_t numChannels;
u_int32_t numSampleFrames;
u_int16_t sampleSize;
unsigned char sampleRate[10];
assert(!memcmp(&type, "COMM", 4));
track = _af_filehandle_get_track(file, AF_DEFAULT_TRACK);
af_fread(&numChannels, sizeof (u_int16_t), 1, fh);
track->f.channelCount = BENDIAN_TO_HOST_INT16(numChannels);
af_fread(&numSampleFrames, sizeof (u_int32_t), 1, fh);
track->totalfframes = BENDIAN_TO_HOST_INT32(numSampleFrames);
af_fread(&sampleSize, sizeof (u_int16_t), 1, fh);
track->f.sampleWidth = BENDIAN_TO_HOST_INT16(sampleSize);
af_fread(sampleRate, 10, 1, fh);
track->f.sampleRate = _af_convert_from_ieee_extended(sampleRate);
track->f.compressionType = AF_COMPRESSION_NONE;
track->f.sampleFormat = AF_SAMPFMT_TWOSCOMP;
track->f.byteOrder = AF_BYTEORDER_BIGENDIAN;
if (file->fileFormat == AF_FILE_AIFFC)
{
u_int8_t compressionID[4];
/* Pascal strings are at most 255 bytes long. */
unsigned char compressionName[256];
unsigned char compressionNameLength;
af_fread(compressionID, 4, 1, fh);
/* Read the Pascal-style string containing the name. */
af_fread(&compressionNameLength, 1, 1, fh);
af_fread(compressionName, compressionNameLength, 1, fh);
compressionName[compressionNameLength] = '\0';
if (!memcmp(compressionID, "NONE", 4))
track->f.compressionType = AF_COMPRESSION_NONE;
else if (!memcmp(compressionID, "ACE2", 4) ||
!memcmp(compressionID, "ACE8", 4) ||
!memcmp(compressionID, "MAC3", 4) ||
!memcmp(compressionID, "MAC6", 4))
{
_af_error(AF_BAD_NOT_IMPLEMENTED, "AIFF-C format does not support Apple's proprietary %s compression format", compressionName);
return AF_FAIL;
}
else if (!memcmp(compressionID, "ulaw", 4) ||
!memcmp(compressionID, "ULAW", 4))
{
track->f.compressionType = AF_COMPRESSION_G711_ULAW;
}
else if (!memcmp(compressionID, "alaw", 4) ||
!memcmp(compressionID, "ALAW", 4))
{
track->f.compressionType = AF_COMPRESSION_G711_ALAW;
}
else if (!memcmp(compressionID, "fl32", 4) ||
!memcmp(compressionID, "FL32", 4))
{
track->f.sampleFormat = AF_SAMPFMT_FLOAT;
track->f.sampleWidth = 32;
track->f.compressionType = AF_COMPRESSION_NONE;
}
else if (!memcmp(compressionID, "fl64", 4) ||
!memcmp(compressionID, "FL64", 4))
{
track->f.sampleFormat = AF_SAMPFMT_DOUBLE;
track->f.sampleWidth = 64;
track->f.compressionType = AF_COMPRESSION_NONE;
}
else if (!memcmp(compressionID, "sowt", 4))
{
track->f.compressionType = AF_COMPRESSION_NONE;
track->f.byteOrder = AF_BYTEORDER_LITTLEENDIAN;
}
else
{
_af_error(AF_BAD_NOT_IMPLEMENTED, "AIFF-C compression type '%c%c%c%c' not currently supported",
compressionID[0],
compressionID[1],
compressionID[2],
compressionID[3]);
return AF_FAIL;
}
}
_af_set_sample_format(&track->f, track->f.sampleFormat, track->f.sampleWidth);
return AF_SUCCEED;
}
/*
Parse the stored sound chunk, which usually contains little more
than the sound data.
*/
static status ParseSSND (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size)
{
_Track *track;
u_int32_t offset, blockSize;
assert(!memcmp(&type, "SSND", 4));
track = _af_filehandle_get_track(file, AF_DEFAULT_TRACK);
af_fread(&offset, sizeof (u_int32_t), 1, fh);
offset = BENDIAN_TO_HOST_INT32(offset);
af_fread(&blockSize, sizeof (u_int32_t), 1, fh);
blockSize = BENDIAN_TO_HOST_INT32(blockSize);
/*
This seems like a reasonable way to calculate the number of
bytes in an SSND chunk.
*/
track->data_size = size - 8 - offset;
#ifdef DEBUG
printf("offset: %d\n", offset);
printf("block size: %d\n", blockSize);
#endif
track->fpos_first_frame = af_ftell(fh) + offset;
#ifdef DEBUG
printf("data start: %d\n", track->fpos_first_frame);
#endif
/* Sound data follows. */
return AF_SUCCEED;
}
status _af_aiff_read_init (AFfilesetup setup, AFfilehandle file)
{
u_int32_t type, size, formtype;
size_t index = 0;
bool hasCOMM, hasFVER, hasSSND, hasMARK, hasINST;
bool hasAESD, hasNAME, hasAUTH, hasCOPY;
_Track *track;
hasCOMM = AF_FALSE;
hasFVER = AF_FALSE;
hasSSND = AF_FALSE;
hasMARK = AF_FALSE;
hasINST = AF_FALSE;
hasAESD = AF_FALSE;
hasNAME = AF_FALSE;
hasAUTH = AF_FALSE;
hasCOPY = AF_FALSE;
assert(file != NULL);
assert(file->fh != NULL);
af_fseek(file->fh, 0, SEEK_SET);
af_fread(&type, 4, 1, file->fh);
af_fread(&size, 4, 1, file->fh);
size = BENDIAN_TO_HOST_INT32(size);
af_fread(&formtype, 4, 1, file->fh);
if (memcmp(&type, "FORM", 4) != 0 ||
(memcmp(&formtype, "AIFF", 4) && memcmp(&formtype, "AIFC", 4)))
return AF_FAIL;
#ifdef DEBUG
printf("size: %d\n", size);
#endif
file->instrumentCount = 0;
file->instruments = NULL;
file->miscellaneousCount = 0;
file->miscellaneous = NULL;
/* AIFF files have only one track. */
track = _af_track_new();
file->trackCount = 1;
file->tracks = track;
/* Include the offset of the form type. */
index += 4;
while (index < size)
{
u_int32_t chunkid = 0, chunksize = 0;
status result = AF_SUCCEED;
#ifdef DEBUG
printf("index: %d\n", index);
#endif
af_fread(&chunkid, 4, 1, file->fh);
af_fread(&chunksize, 4, 1, file->fh);
chunksize = BENDIAN_TO_HOST_INT32(chunksize);
#ifdef DEBUG
_af_printid(chunkid);
printf(" size: %d\n", chunksize);
#endif
if (!memcmp("COMM", &chunkid, 4))
{
hasCOMM = AF_TRUE;
result = ParseCOMM(file, file->fh, chunkid, chunksize);
}
else if (!memcmp("FVER", &chunkid, 4))
{
hasFVER = AF_TRUE;
ParseFVER(file, file->fh, chunkid, chunksize);
}
else if (!memcmp("INST", &chunkid, 4))
{
hasINST = AF_TRUE;
ParseINST(file, file->fh, chunkid, chunksize);
}
else if (!memcmp("MARK", &chunkid, 4))
{
hasMARK = AF_TRUE;
ParseMARK(file, file->fh, chunkid, chunksize);
}
else if (!memcmp("AESD", &chunkid, 4))
{
hasAESD = AF_TRUE;
ParseAESD(file, file->fh, chunkid, chunksize);
}
else if (!memcmp("NAME", &chunkid, 4) ||
!memcmp("AUTH", &chunkid, 4) ||
!memcmp("(c) ", &chunkid, 4) ||
!memcmp("ANNO", &chunkid, 4) ||
!memcmp("APPL", &chunkid, 4) ||
!memcmp("MIDI", &chunkid, 4))
{
ParseMiscellaneous(file, file->fh, chunkid, chunksize);
}
/*
The sound data chunk is required if there are more than
zero sample frames.
*/
else if (!memcmp("SSND", &chunkid, 4))
{
if (hasSSND)
{
_af_error(AF_BAD_AIFF_SSND, "AIFF file has more than one SSND chunk");
return AF_FAIL;
}
hasSSND = AF_TRUE;
result = ParseSSND(file, file->fh, chunkid, chunksize);
}
if (result == AF_FAIL)
return AF_FAIL;
index += chunksize + 8;
/* all chunks must be aligned on an even number of bytes */
if ((index % 2) != 0)
index++;
af_fseek(file->fh, index + 8, SEEK_SET);
}
if (!hasCOMM)
{
_af_error(AF_BAD_AIFF_COMM, "bad AIFF COMM chunk");
}
/* The file has been successfully parsed. */
return AF_SUCCEED;
}
bool _af_aiff_recognize (AFvirtualfile *fh)
{
u_int8_t buffer[8];
af_fseek(fh, 0, SEEK_SET);
if (af_fread(buffer, 1, 8, fh) != 8 || memcmp(buffer, "FORM", 4) != 0)
return AF_FALSE;
if (af_fread(buffer, 1, 4, fh) != 4 || memcmp(buffer, "AIFF", 4) != 0)
return AF_FALSE;
return AF_TRUE;
}
bool _af_aifc_recognize (AFvirtualfile *fh)
{
u_int8_t buffer[8];
af_fseek(fh, 0, SEEK_SET);
if (af_fread(buffer, 1, 8, fh) != 8 || memcmp(buffer, "FORM", 4) != 0)
return AF_FALSE;
if (af_fread(buffer, 1, 4, fh) != 4 || memcmp(buffer, "AIFC", 4) != 0)
return AF_FALSE;
return AF_TRUE;
}
AFfilesetup _af_aiff_complete_setup (AFfilesetup setup)
{
_TrackSetup *track;
bool isAIFF = setup->fileFormat == AF_FILE_AIFF;
if (setup->trackSet && setup->trackCount != 1)
{
_af_error(AF_BAD_NUMTRACKS, "AIFF/AIFF-C file must have 1 track");
return AF_NULL_FILESETUP;
}
track = &setup->tracks[0];
if (track->sampleFormatSet)
{
if (track->f.sampleFormat == AF_SAMPFMT_UNSIGNED)
{
_af_error(AF_BAD_FILEFMT, "AIFF/AIFF-C format does not support unsigned data");
return AF_NULL_FILESETUP;
}
else if (isAIFF && track->f.sampleFormat != AF_SAMPFMT_TWOSCOMP)
{
_af_error(AF_BAD_FILEFMT, "AIFF format supports only two's complement integer data");
return AF_NULL_FILESETUP;
}
}
else
_af_set_sample_format(&track->f, AF_SAMPFMT_TWOSCOMP,
track->f.sampleWidth);
/* Check sample width if writing two's complement. Otherwise ignore. */
if (track->f.sampleFormat == AF_SAMPFMT_TWOSCOMP &&
(track->f.sampleWidth < 1 || track->f.sampleWidth > 32))
{
_af_error(AF_BAD_WIDTH,
"invalid sample width %d for AIFF/AIFF-C file "
"(must be 1-32)", track->f.sampleWidth);
return AF_NULL_FILESETUP;
}
if (isAIFF && track->f.compressionType != AF_COMPRESSION_NONE)
{
_af_error(AF_BAD_FILESETUP,
"AIFF does not support compression; use AIFF-C");
return AF_NULL_FILESETUP;
}
/* XXXmpruett handle compression here */
if (track->byteOrderSet &&
track->f.byteOrder != AF_BYTEORDER_BIGENDIAN &&
track->f.sampleWidth > 8)
{
_af_error(AF_BAD_BYTEORDER,
"AIFF/AIFF-C format supports only big-endian data");
}
track->f.byteOrder = AF_BYTEORDER_BIGENDIAN;
if (setup->instrumentSet)
{
if (setup->instrumentCount != 0 && setup->instrumentCount != 1)
{
_af_error(AF_BAD_NUMINSTS, "AIFF/AIFF-C file must have 0 or 1 instrument chunk");
return AF_NULL_FILESETUP;
}
if (setup->instruments != 0 &&
setup->instruments[0].loopCount != 2)
{
_af_error(AF_BAD_NUMLOOPS, "AIFF/AIFF-C file with instrument must also have 2 loops");
return AF_NULL_FILESETUP;
}
}
if (setup->miscellaneousSet)
{
int i;
for (i=0; i<setup->miscellaneousCount; i++)
{
switch (setup->miscellaneous[i].type)
{
case AF_MISC_COPY:
case AF_MISC_AUTH:
case AF_MISC_NAME:
case AF_MISC_ANNO:
case AF_MISC_APPL:
case AF_MISC_MIDI:
break;
default:
_af_error(AF_BAD_MISCTYPE, "invalid miscellaneous type %d for AIFF/AIFF-C file", setup->miscellaneous[i].type);
return AF_NULL_FILESETUP;
}
}
}
return _af_filesetup_copy(setup, &_af_aiff_default_filesetup, AF_TRUE);
}
bool _af_aiff_instparam_valid (AFfilehandle filehandle, AUpvlist list, int i)
{
int param, type, lval;
AUpvgetparam(list, i, ¶m);
AUpvgetvaltype(list, i, &type);
if (type != AU_PVTYPE_LONG)
return AF_FALSE;
AUpvgetval(list, i, &lval);
switch (param)
{
case AF_INST_MIDI_BASENOTE:
return ((lval >= 0) && (lval <= 127));
case AF_INST_NUMCENTS_DETUNE:
return ((lval >= -50) && (lval <= 50));
case AF_INST_MIDI_LOVELOCITY:
return ((lval >= 1) && (lval <= 127));
case AF_INST_MIDI_HIVELOCITY:
return ((lval >= 1) && (lval <= 127));
case AF_INST_MIDI_LONOTE:
return ((lval >= 0) && (lval <= 127));
case AF_INST_MIDI_HINOTE:
return ((lval >= 0) && (lval <= 127));
case AF_INST_NUMDBS_GAIN:
case AF_INST_SUSLOOPID:
case AF_INST_RELLOOPID:
return AF_TRUE;
default:
return AF_FALSE;
break;
}
return AF_TRUE;
}
int _af_aifc_get_version (AFfilehandle file)
{
return AIFC_VERSION_1;
}
syntax highlighted by Code2HTML, v. 0.9.1