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gzdoom-gles/libraries/timidityplus/smplfile.cpp
Christoph Oelckers b5ebe264ab - consolidated the different file access interfaces in the backends into one shared version. 
This was getting a bit unwieldy. The include path setup is not perfect yet, that's work for later.
(It's about time we're getting C++20 with modules so that this include path madness can be put to an end.)
2020-01-05 11:46:28 +01:00

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/*
TiMidity++ -- MIDI to WAVE converter and player
Copyright (C) 1999-2002 Masanao Izumo <mo@goice.co.jp>
Copyright (C) 1995 Tuukka Toivonen <tt@cgs.fi>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
smplfile.c
core and WAVE,AIFF/AIFF-C importer by Kentaro Sato <kentaro@ranvis.com>
*/
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "timidity.h"
#include "common.h"
#include "filter.h"
#include "instrum.h"
#include "playmidi.h"
#include "resample.h"
#include "tables.h"
namespace TimidityPlus
{
typedef int (Instruments::*SampleImporterDiscriminateProc)(char *sample_file);
/* returns 0 if file may be loadable */
typedef int (Instruments::*SampleImporterSampleLoaderProc)(char *sample_file, Instrument *inst);
/* sets inst->samples, inst->sample and returns 0 if loaded */
/* inst is pre-allocated, and is freed by caller if loading failed */
/* -1 to let caller give up testing other importers */
struct SampleImporter {
const char *extension; /* file extension excluding '.' */
SampleImporterDiscriminateProc discriminant;
SampleImporterSampleLoaderProc load;
/* either extension or discriminant may be NULL */
int added; /* for get_importers()'s internal use */
};
static double ConvertFromIeeeExtended(const char *);
Instrument *Instruments::extract_sample_file(char *sample_file)
{
Instrument *inst;
SampleImporter *importers[10], *importer;
int i, j, count, result;
Sample *sample;
if ((count = get_importers(sample_file, sizeof importers / sizeof importers[0], importers)) == 0)
return NULL;
inst = (Instrument *)safe_malloc(sizeof(Instrument));
inst->type = INST_PCM;
inst->instname = NULL;
inst->samples = 0;
inst->sample = NULL;
i = 0;
importer = NULL;
while ((i = get_next_importer(sample_file, i, count, importers)) < count)
{
if ((result = (this->*(importers[i]->load))(sample_file, inst)) == 0)
{
importer = importers[i];
break;
}
if (result == -1) /* importer told to give up test */
break;
j = inst->samples;
while(j > 0)
{
if (inst->sample[--j].data_alloced)
free(inst->sample[j].data);
}
inst->samples = 0;
free(inst->sample);
inst->sample = NULL;
i++; /* try next */
}
if (importer == NULL)
{
free_instrument(inst);
return NULL;
}
/* post-process */
if (inst->instname == NULL)
{
const char *name;
name = strrchr(sample_file, '/');
if (name == NULL)
name = sample_file - 1;
inst->instname = strdup(name + 1);
}
for(i = 0; i < inst->samples; i++)
{
sample = &inst->sample[i];
/* If necessary do some anti-aliasing filtering */
if (antialiasing_allowed)
antialiasing((int16_t *)sample->data,
sample->data_length >> FRACTION_BITS,
sample->sample_rate, playback_rate);
/* resample it if possible */
if (sample->note_to_use && !(sample->modes & MODES_LOOPING))
pre_resample(sample);
}
return inst;
}
#define ADD_IMPORTER importer->added = 1; \
importers[count++] = importer;
/* returns number of importers which may be suitable for the file */
int Instruments::get_importers(const char *sample_file, int limit, SampleImporter **importers)
{
static SampleImporter sample_importers[] = {
{"wav", &Instruments::import_wave_discriminant, &Instruments::import_wave_load},
{"aiff", &Instruments::import_aiff_discriminant, &Instruments::import_aiff_load},
{NULL, NULL, NULL},
};
SampleImporter *importer;
int count;
const char *extension;
count = 0;
importer = sample_importers;
while(importer->load != NULL && count < limit)
{
importer->added = 0;
importer++;
}
/* first, extension matched importers */
extension = strrchr(sample_file, '/');
if (extension != NULL && (extension = strrchr(extension, '.')) != NULL)
{
extension++;
/* ones which have discriminant first */
importer = sample_importers;
while(importer->load != NULL && count < limit)
{
if (!importer->added && importer->extension != NULL && importer->discriminant != NULL
&& strcasecmp(extension, importer->extension) == 0)
{ADD_IMPORTER}
importer++;
}
/* then ones which don't have discriminant */
importer = sample_importers;
while(importer->load != NULL && count < limit)
{
if (!importer->added && importer->extension != NULL
&& importer->discriminant == NULL
&& strcasecmp(extension, importer->extension) == 0)
{ADD_IMPORTER}
importer++;
}
}
/* lastly, ones which has discriminant */
importer = sample_importers;
while(importer->load != NULL && count < limit)
{
if (!importer->added && importer->discriminant != NULL)
{ADD_IMPORTER}
importer++;
}
return count;
}
/* returns importer index for the file */
/* returns count if no importer available */
int Instruments::get_next_importer(char *sample_file, int start, int count, SampleImporter **importers)
{
int i;
for(i = start; i < count; i++)
{
if (importers[i]->discriminant != NULL)
{
if ((this->*(importers[i]->discriminant))(sample_file) != 0)
continue;
}
return i;
}
return i;
}
/*************** Sample Importers ***************/
#define MAX_SAMPLE_CHANNELS 16
/* from instrum.c */
#define READ_CHAR(thing) \
if (1 != tf_read(&tmpchar, 1, 1, tf)) goto fail; \
thing = tmpchar;
#define READ_SHORT_LE(thing) \
if (1 != tf_read(&tmpshort, 2, 1, tf)) goto fail; \
thing = LE_SHORT(tmpshort);
#define READ_LONG_LE(thing) \
if (1 != tf_read(&tmplong, 4, 1, tf)) goto fail; \
thing = LE_LONG(tmplong);
#define READ_SHORT_BE(thing) \
if (1 != tf_read(&tmpshort, 2, 1, tf)) goto fail; \
thing = BE_SHORT(tmpshort);
#define READ_LONG_BE(thing) \
if (1 != tf_read(&tmplong, 4, 1, tf)) goto fail; \
thing = BE_LONG(tmplong);
const uint8_t pan_mono[] = {64}; /* center */
const uint8_t pan_stereo[] = {1,127}; /* left,right */
const uint8_t pan_3ch[] = {1,127,64}; /* left,right,center*/
/* pannings below are set by guess */
/*const uint8_t pan_quad[] = {1,127,16,112};*/ /* front-left?,front-right?,rear-left?,rear-right? */
const uint8_t pan_4ch[] = {1,64,127,64}; /* left,center,right,surround?*/
const uint8_t pan_6ch[] = {1,32,64,127,95,64}; /* left,left-center?,center,right,right-center?,surround? */
const uint8_t *const gen_pan_list[6] = {
pan_mono, pan_stereo, pan_3ch,
pan_4ch, NULL, pan_6ch,
};
typedef struct {
uint8_t baseNote;
int8_t detune;
uint8_t lowNote;
uint8_t highNote;
uint8_t lowVelocity;
uint8_t highVelocity;
int16_t gain;
} GeneralInstrumentInfo;
static void apply_GeneralInstrumentInfo(int samples, Sample *sample, const GeneralInstrumentInfo *info);
/* read_sample_data() flags */
#define SAMPLE_BIG_ENDIAN (1 << 0)
#define SAMPLE_8BIT_UNSIGNED (1 << 1)
static int read_sample_data(int32_t flags, timidity_file *tf, int bits, int samples, int frames, sample_t **sdata);
/*************** WAV Importer ***************/
typedef struct {
int16_t wFormatTag;
uint16_t wChannels;
uint32_t dwSamplesPerSec;
uint32_t dwAvgBytesPerSec;
uint16_t wBlockAlign;
uint16_t wBitsPerSample;
} WAVFormatChunk;
typedef struct {
int32_t dwSamplePeriod;
int32_t dwMIDIUnityNote;
uint32_t dwMIDIPitchFraction;
int hasLoop, loopType;
int32_t loop_dwStart, loop_dwEnd, loop_dwFraction;
} WAVSamplerChunk;
static int read_WAVFormatChunk(timidity_file *tf, WAVFormatChunk *fmt, int psize);
static int read_WAVSamplerChunk(timidity_file *tf, WAVSamplerChunk *smpl, int psize);
static int read_WAVInstrumentChunk(timidity_file *tf, GeneralInstrumentInfo *inst, int psize);
int Instruments::import_wave_discriminant(char *sample_file)
{
timidity_file *tf;
char buf[12];
if ((tf = open_file(sample_file, sfreader)) == NULL)
return 1;
if (tf_read(buf, 12, 1, tf) != 1
|| memcmp(&buf[0], "RIFF", 4) != 0 || memcmp(&buf[8], "WAVE", 4) != 0)
{
tf_close(tf);
return 1;
}
tf_close(tf);
return 0;
}
#define WAVE_CHUNKFLAG_SAMPLER (1 << 0)
#define WAVE_CHUNKFLAG_INSTRUMENT (1 << 1)
int Instruments::import_wave_load(char *sample_file, Instrument *inst)
{
timidity_file *tf;
union {
int32_t i[3];
char c[12];
} xbuf;
char *buf = xbuf.c;
int state; /* initial > fmt_read > data_read */
int i, chunk_size, type_index, type_size, samples = 0;
int32_t chunk_flags;
Sample *sample;
WAVFormatChunk format = {0,};
WAVSamplerChunk samplerc = {0,};
GeneralInstrumentInfo instc;
if ((tf = open_file(sample_file, sfreader)) == NULL)
return 1;
if (tf_read(buf, 12, 1, tf) != 1
|| memcmp(&buf[0], "RIFF", 4) != 0 || memcmp(&buf[8], "WAVE", 4) != 0)
{
tf_close(tf);
return 1;
}
//printMessage(CMSG_INFO,VERB_NOISY,"Loading WAV: %s", sample_file);
state = chunk_flags = 0;
type_index = 4, type_size = 8;
for(;;) {
if (tf_read(&buf[type_index], type_size, 1, tf) != 1)
break;
chunk_size = LE_LONG(xbuf.i[2]);
if (memcmp(&buf[4 + 0], "fmt ", 4) == 0)
{
if (state != 0 /* only one format chunk is required */
|| chunk_size < 0x10) /* too small */
break;
if (!read_WAVFormatChunk(tf, &format, chunk_size))
break;
if (format.wChannels < 1 /* invalid range */
|| format.wChannels > MAX_SAMPLE_CHANNELS
|| format.wFormatTag != 1 /* compressed */
|| format.wBitsPerSample & 0x7 /* padding not supported */
|| format.wBitsPerSample > 16) /* more than 16-bit is not supported */
break;
state++;
}
else if (memcmp(&buf[4 + 0], "data", 4) == 0)
{
int frames;
sample_t *sdata[MAX_SAMPLE_CHANNELS];
if (state != 1)
break;
frames = chunk_size / format.wBlockAlign;
inst->samples = samples = format.wChannels;
inst->sample = (Sample *)safe_malloc(sizeof(Sample) * samples);
//printMessage(CMSG_INFO,VERB_NOISY,"Format: %d-bits %dHz %dch, %d frames", format.wBitsPerSample, format.dwSamplesPerSec, samples, frames);
initialize_sample(inst, frames, format.wBitsPerSample, format.dwSamplesPerSec);
/* load waveform data */
for(i = 0; i < samples; i++)
{
inst->sample[i].data = sdata[i] = (sample_t *)safe_malloc(sizeof(sample_t) * frames);
inst->sample[i].data_alloced = 1;
}
if (!read_sample_data(SAMPLE_8BIT_UNSIGNED, tf, format.wBitsPerSample, samples, frames, sdata))
break;
state++;
}
else if (!(chunk_flags & WAVE_CHUNKFLAG_SAMPLER) && memcmp(&buf[4 + 0], "smpl", 4) == 0)
{
if (!read_WAVSamplerChunk(tf, &samplerc, chunk_size))
break;
chunk_flags |= WAVE_CHUNKFLAG_SAMPLER;
}
else if (!(chunk_flags & WAVE_CHUNKFLAG_INSTRUMENT) && memcmp(&buf[4 + 0], "inst", 4) == 0)
{
if (!read_WAVInstrumentChunk(tf, &instc, chunk_size))
break;
chunk_flags |= WAVE_CHUNKFLAG_INSTRUMENT;
}
else if (tf_seek(tf, chunk_size, SEEK_CUR) == -1)
break;
type_index = 4 - (chunk_size & 1);
type_size = 8 + (chunk_size & 1);
}
tf_close(tf);
if (chunk_flags & WAVE_CHUNKFLAG_SAMPLER)
{
uint8_t modes;
int32_t sample_rate, root_freq;
uint32_t loopStart = 0, loopEnd = 0;
sample_rate = samplerc.dwSamplePeriod == 0 ? 0 : 1000000000 / samplerc.dwSamplePeriod;
root_freq = freq_table[samplerc.dwMIDIUnityNote];
if (samplerc.dwMIDIPitchFraction != 0
&& samplerc.dwMIDIUnityNote != 127) /* no table data */
{
int32_t diff;
diff = freq_table[samplerc.dwMIDIUnityNote + 1] - root_freq;
root_freq += int32_t((double)samplerc.dwMIDIPitchFraction * diff / 0xFFFFFFFF);
}
if (samplerc.hasLoop)
{
const uint8_t loopModes[] = {MODES_LOOPING, MODES_LOOPING | MODES_PINGPONG, MODES_LOOPING | MODES_REVERSE};
modes = loopModes[samplerc.loopType];
loopStart = samplerc.loop_dwStart << FRACTION_BITS;
loopEnd = samplerc.loop_dwEnd << FRACTION_BITS;
}
else
modes = 0;
for(i = 0; i < samples; i++)
{
sample = &inst->sample[i];
if (sample_rate != 0)
sample->sample_rate = sample_rate;
sample->root_freq = root_freq;
if (modes != 0)
{
sample->loop_start = loopStart;
sample->loop_end = loopEnd;
}
sample->modes |= modes;
}
}
if (chunk_flags & WAVE_CHUNKFLAG_INSTRUMENT)
apply_GeneralInstrumentInfo(samples, inst->sample, &instc);
return (state != 2);
}
static int read_WAVFormatChunk(timidity_file *tf, WAVFormatChunk *fmt, int csize)
{
int32_t tmplong;
int16_t tmpshort;
READ_SHORT_LE(fmt->wFormatTag);
READ_SHORT_LE(fmt->wChannels);
READ_LONG_LE(fmt->dwSamplesPerSec);
READ_LONG_LE(fmt->dwAvgBytesPerSec);
READ_SHORT_LE(fmt->wBlockAlign);
READ_SHORT_LE(fmt->wBitsPerSample);
if (tf_seek(tf, csize - 0x10, SEEK_CUR) == -1)
goto fail;
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read format chunk");
return 0;
}
static int read_WAVSamplerChunk(timidity_file *tf, WAVSamplerChunk *smpl, int psize)
{
int32_t tmplong;
int i, loopCount, cbSamplerData, dwPlayCount;
unsigned int loopType;
smpl->hasLoop = 0;
/* skip dwManufacturer, dwProduct */
if (tf_seek(tf, 4 + 4, SEEK_CUR) == -1)
goto fail;
READ_LONG_LE(smpl->dwSamplePeriod);
READ_LONG_LE(smpl->dwMIDIUnityNote);
READ_LONG_LE(smpl->dwMIDIPitchFraction);
/* skip dwSMPTEFormat, dwSMPTEOffset */
if (tf_seek(tf, 4 + 4, SEEK_CUR) == -1)
goto fail;
READ_LONG_LE(loopCount);
READ_LONG_LE(cbSamplerData);
psize -= 4 * 9 + loopCount * 4 * 6;
for(i = 0; i < loopCount; i++)
{
/* skip dwIdentifier */
if (tf_seek(tf, 4, SEEK_CUR) == -1)
goto fail;
READ_LONG_LE(loopType); /* dwType */
if (!smpl->hasLoop && loopType <= 2)
{
smpl->loopType = loopType;
READ_LONG_LE(smpl->loop_dwStart);
READ_LONG_LE(smpl->loop_dwEnd);
READ_LONG_LE(smpl->loop_dwFraction);
READ_LONG_LE(dwPlayCount);
if (dwPlayCount == 0) /* infinite loop */
smpl->hasLoop = 1;
}
else
{
if (tf_seek(tf, 4 * 4, SEEK_CUR) == -1)
goto fail;
}
}
if (psize != cbSamplerData)
printMessage(CMSG_WARNING, VERB_NOISY, "Bad sampler chunk length");
if (tf_seek(tf, psize, SEEK_CUR) == -1)
goto fail;
//printMessage(CMSG_INFO,VERB_NOISY,"Sampler: %dns/frame, note=%d, loops=%d", smpl->dwSamplePeriod, smpl->dwMIDIUnityNote, loopCount);
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read sampler chunk");
return 0;
}
static int read_WAVInstrumentChunk(timidity_file *tf, GeneralInstrumentInfo *inst, int psize)
{
int8_t tmpchar;
if (psize != 7)
goto fail;
READ_CHAR(inst->baseNote);
READ_CHAR(inst->detune);
READ_CHAR(inst->gain);
READ_CHAR(inst->lowNote);
READ_CHAR(inst->highNote);
READ_CHAR(inst->lowVelocity);
READ_CHAR(inst->highVelocity);
printMessage(CMSG_INFO, VERB_VERBOSE, "Instrument: note=%d (%d-%d), gain=%ddb, velocity=%d-%d",
inst->baseNote, inst->lowNote, inst->highNote, inst->gain,
inst->lowVelocity, inst->highVelocity);
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read instrument chunk");
return 0;
}
/*************** AIFF importer ***************/
struct AIFFCommonChunk {
uint16_t numChannels;
uint32_t numSampleFrames;
uint16_t sampleSize;
double sampleRate;
};
struct AIFFSoundDataChunk {
uint32_t position;
Instrument *inst;
AIFFCommonChunk *common;
};
typedef struct {
uint16_t mode;
int16_t beginID, endID;
} AIFFLoopInfo;
typedef struct {
int16_t id;
uint32_t position;
} AIFFMarkerData;
static int read_AIFFInstumentChunk(timidity_file *tf, GeneralInstrumentInfo *inst, AIFFLoopInfo *loop, int csize);
static int read_AIFFMarkerChunk(timidity_file *tf, AIFFMarkerData **markers, int csize);
static int AIFFGetMarkerPosition(int16_t id, const AIFFMarkerData *markers, uint32_t *position);
int Instruments::import_aiff_discriminant(char *sample_file)
{
timidity_file *tf;
char buf[12];
if ((tf = open_file(sample_file, sfreader)) == NULL)
return 1;
if (tf_read(buf, 12, 1, tf) != 1
|| memcmp(&buf[0], "FORM", 4) != 0 || memcmp(&buf[8], "AIF", 3) != 0
|| (buf[8 + 3] != 'F' && buf[8 + 3] != 'C'))
{
tf_close(tf);
return 1;
}
tf_close(tf);
return 0;
}
#define AIFF_CHUNKFLAG_COMMON (1 << 0)
#define AIFF_CHUNKFLAG_SOUND (1 << 1)
#define AIFF_CHUNKFLAG_INSTRUMENT (1 << 2)
#define AIFF_CHUNKFLAG_MARKER (1 << 3)
#define AIFF_CHUNKFLAG_SOUNDREAD (1 << 29)
#define AIFF_CHUNKFLAG_READERR (1 << 30)
#define AIFF_CHUNKFLAG_DUPCHUNK (1 << 31)
#define AIFF_CHUNKFLAG_REQUIRED (AIFF_CHUNKFLAG_COMMON | AIFF_CHUNKFLAG_SOUND)
#define AIFF_CHUNKFLAG_FAILED (AIFF_CHUNKFLAG_READERR | AIFF_CHUNKFLAG_DUPCHUNK)
int Instruments::import_aiff_load(char *sample_file, Instrument *inst)
{
timidity_file *tf;
union {
int32_t i[3];
char c[12];
} xbuf;
char *buf = xbuf.c;
int chunk_size, type_index, type_size;
int compressed;
int32_t chunk_flags;
AIFFCommonChunk common;
AIFFSoundDataChunk sound;
GeneralInstrumentInfo inst_info;
AIFFLoopInfo loop_info = {0,0,0};
AIFFMarkerData *marker_data;
if ((tf = open_file(sample_file, sfreader)) == NULL)
return 1;
if (tf_read(buf, 12, 1, tf) != 1
|| memcmp(&buf[0], "FORM", 4) != 0 || memcmp(&buf[8], "AIF", 3) != 0
|| (buf[8 + 3] != 'F' && buf[8 + 3] != 'C'))
{
tf_close(tf);
return 1;
}
compressed = buf[8 + 3] == 'C';
//printMessage(CMSG_INFO,VERB_NOISY,"Loading AIFF: %s", sample_file);
type_index = 4, type_size = 8;
chunk_flags = 0;
sound.inst = inst;
sound.common = &common;
marker_data = NULL;
for(;;) {
if (tf_read(&buf[type_index], type_size, 1, tf) != 1)
break;
chunk_size = BE_LONG(xbuf.i[2]);
if (memcmp(&buf[4 + 0], "COMM", 4) == 0)
{
if (chunk_flags & AIFF_CHUNKFLAG_COMMON)
{
chunk_flags |= AIFF_CHUNKFLAG_DUPCHUNK;
break;
}
if (chunk_size < 18) /* too small */
break;
if (!read_AIFFCommonChunk(tf, &common, chunk_size, compressed))
break;
chunk_flags |= AIFF_CHUNKFLAG_COMMON;
}
else if (memcmp(&buf[4 + 0], "SSND", 4) == 0)
{
if (chunk_flags & AIFF_CHUNKFLAG_SOUND)
{
chunk_flags |= AIFF_CHUNKFLAG_DUPCHUNK;
break;
}
if (chunk_flags & AIFF_CHUNKFLAG_COMMON)
{
if (!read_AIFFSoundDataChunk(tf, &sound, chunk_size, 0))
break;
chunk_flags |= AIFF_CHUNKFLAG_SOUNDREAD;
}
else if (!read_AIFFSoundDataChunk(tf, &sound, chunk_size, 1))
break;
chunk_flags |= AIFF_CHUNKFLAG_SOUND;
}
else if (memcmp(&buf[4 + 0], "INST", 4) == 0)
{
if (chunk_flags & AIFF_CHUNKFLAG_INSTRUMENT)
{
chunk_flags |= AIFF_CHUNKFLAG_DUPCHUNK;
break;
}
else if (!read_AIFFInstumentChunk(tf, &inst_info, &loop_info, chunk_size))
break;
chunk_flags |= AIFF_CHUNKFLAG_INSTRUMENT;
}
else if (memcmp(&buf[4 + 0], "MARK", 4) == 0)
{
if (chunk_flags & AIFF_CHUNKFLAG_MARKER)
{
chunk_flags |= AIFF_CHUNKFLAG_DUPCHUNK;
break;
}
else if (chunk_size < 2 || !read_AIFFMarkerChunk(tf, &marker_data, chunk_size))
break;
chunk_flags |= AIFF_CHUNKFLAG_MARKER;
}
else if (inst->instname == NULL && memcmp(&buf[4 + 0], "NAME", 4) == 0)
{
inst->instname = (char*)malloc(chunk_size + 1);
if (tf_read(inst->instname, chunk_size, 1, tf) != 1)
{
chunk_flags |= AIFF_CHUNKFLAG_READERR;
break;
}
inst->instname[chunk_size] = '\0';
}
else if (tf_seek(tf, chunk_size, SEEK_CUR) == -1)
break;
/* no need to check format version chunk */
type_index = 4 - (chunk_size & 1);
type_size = 8 + (chunk_size & 1);
}
if (chunk_flags & AIFF_CHUNKFLAG_FAILED
|| (chunk_flags & AIFF_CHUNKFLAG_REQUIRED) != AIFF_CHUNKFLAG_REQUIRED)
{
if (marker_data != NULL)
free(marker_data);
tf_close(tf);
return -1;
}
if (!(chunk_flags & AIFF_CHUNKFLAG_SOUNDREAD))
{
if (!read_AIFFSoundDataChunk(tf, &sound, 0, 2))
{
if (marker_data != NULL)
free(marker_data);
tf_close(tf);
return 1;
}
}
if (chunk_flags & AIFF_CHUNKFLAG_INSTRUMENT)
{
apply_GeneralInstrumentInfo(inst->samples, inst->sample, &inst_info);
if ((loop_info.mode == 1 || loop_info.mode == 2)
&& chunk_flags & AIFF_CHUNKFLAG_MARKER && marker_data != NULL)
{
Sample *sample;
int i;
uint32_t loopStart, loopEnd;
uint8_t loopMode;
if (AIFFGetMarkerPosition(loop_info.beginID, marker_data, &loopStart)
&& AIFFGetMarkerPosition(loop_info.endID, marker_data, &loopEnd))
{
loopMode = (loop_info.mode == 1) ? MODES_LOOPING : (MODES_LOOPING | MODES_PINGPONG);
loopStart <<= FRACTION_BITS;
loopEnd <<= FRACTION_BITS;
if (loopStart <= loopEnd)
{
for(i = 0; i < inst->samples; i++)
{
sample = &inst->sample[i];
sample->loop_start = loopStart;
sample->loop_end = loopEnd;
sample->modes |= loopMode;
}
}
}
}
}
if (marker_data != NULL)
free(marker_data);
tf_close(tf);
return 0;
}
int Instruments::read_AIFFCommonChunk(timidity_file *tf, AIFFCommonChunk *comm, int csize, int compressed)
{
int32_t tmplong;
int16_t tmpshort;
int8_t tmpchar;
char sampleRate[10];
uint32_t compressionType;
READ_SHORT_BE(comm->numChannels);
READ_LONG_BE(comm->numSampleFrames);
READ_SHORT_BE(comm->sampleSize);
if (tf_read(sampleRate, 10, 1, tf) != 1)
goto fail;
comm->sampleRate = ConvertFromIeeeExtended(sampleRate);
csize -= 8 + 10;
//printMessage(CMSG_INFO,VERB_NOISY,"Format: %d-bits %dHz %dch, %d frames", comm->sampleSize, (int)comm->sampleRate, comm->numChannels, comm->numSampleFrames);
if (compressed)
{
READ_LONG_BE(compressionType);
if (compressionType != (uint32_t)BE_LONG(0x4E4F4E45) /* NONE */)
{
char compressionName[256];
uint8_t compressionNameLength;
READ_CHAR(compressionNameLength);
if (tf_read(compressionName, compressionNameLength, 1, tf) != 1)
goto fail;
compressionName[compressionNameLength] = '\0';
printMessage(CMSG_WARNING, VERB_VERBOSE, "AIFF-C unknown compression type: %s", compressionName);
goto fail;
}
csize -= 4;
/* ignore compressionName and its padding */
}
if (tf_seek(tf, csize, SEEK_CUR) == -1)
goto fail;
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read common chunk");
return 0;
}
int Instruments::read_AIFFSoundDataChunk(timidity_file *tf, AIFFSoundDataChunk *sound, int csize, int mode)
{
int32_t tmplong;
uint32_t offset, blockSize;
if (mode == 0 || mode == 1)
{
READ_LONG_BE(offset);
READ_LONG_BE(blockSize);
if (blockSize != 0) /* not implemented */
goto fail;
if (mode == 0) /* read both information and data */
return read_AIFFSoundData(tf, sound->inst, sound->common);
/* read information only */
auto pos = tf_tell(tf);
if (pos == -1)
goto fail;
sound->position = pos + offset;
csize -= 8;
if (tf_seek(tf, csize, SEEK_CUR) == -1)
goto fail;
return 1;
}
else if (mode == 2) /* read data using information previously read */
{
if (tf_seek(tf, sound->position, SEEK_SET) == -1)
goto fail;
return read_AIFFSoundData(tf, sound->inst, sound->common);
}
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read sound data chunk");
return 0;
}
int Instruments::read_AIFFSoundData(timidity_file *tf, Instrument *inst, AIFFCommonChunk *common)
{
int i, samples;
Sample *sample;
sample_t *sdata[MAX_SAMPLE_CHANNELS];
if ((samples = common->numChannels) > MAX_SAMPLE_CHANNELS)
goto fail;
inst->samples = samples;
inst->sample = sample = (Sample *)safe_malloc(sizeof(Sample) * samples);
initialize_sample(inst, common->numSampleFrames, common->sampleSize, (int)common->sampleRate);
/* load samples */
for(i = 0; i < samples; i++)
{
sample[i].data = sdata[i] = (sample_t *)safe_malloc(sizeof(sample_t) * common->numSampleFrames);
sample[i].data_alloced = 1;
}
if (!read_sample_data(SAMPLE_BIG_ENDIAN, tf, common->sampleSize, samples, common->numSampleFrames, sdata))
goto fail;
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read sound data");
return 0;
}
static int read_AIFFInstumentChunk(timidity_file *tf, GeneralInstrumentInfo *inst, AIFFLoopInfo *loop, int csize)
{
int8_t tmpchar;
int16_t tmpshort;
if (csize != 20)
{
printMessage(CMSG_WARNING, VERB_VERBOSE, "Bad instrument chunk length");
if (tf_seek(tf, csize, SEEK_CUR) == -1)
goto fail;
return 1;
}
READ_CHAR(inst->baseNote);
READ_CHAR(inst->detune);
READ_CHAR(inst->lowNote);
READ_CHAR(inst->highNote);
READ_CHAR(inst->lowVelocity);
READ_CHAR(inst->highVelocity);
READ_SHORT_BE(inst->gain);
READ_SHORT_BE(loop->mode); /* sustain loop */
READ_SHORT_BE(loop->beginID);
READ_SHORT_BE(loop->endID);
if (tf_seek(tf, 2 + 2 + 2, SEEK_CUR) == -1) /* release loop */
goto fail;
printMessage(CMSG_INFO, VERB_VERBOSE, "Instrument: note=%d (%d-%d), gain=%ddb, velocity=%d-%d",
inst->baseNote, inst->lowNote, inst->highNote, inst->gain,
inst->lowVelocity, inst->highVelocity);
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read instrument chunk");
return 0;
}
static int read_AIFFMarkerChunk(timidity_file *tf, AIFFMarkerData **markers, int csize)
{
int32_t tmplong;
int16_t tmpshort;
int16_t markerCount;
int i, dest;
AIFFMarkerData *m;
m = NULL;
READ_SHORT_BE(markerCount)
if (csize != 2 + markerCount * (2 + 4))
{
printMessage(CMSG_WARNING, VERB_VERBOSE, "Bad marker chunk length");
if (tf_seek(tf, csize, SEEK_CUR) == -1)
goto fail;
return 1;
}
if ((m = (AIFFMarkerData*)malloc(sizeof(AIFFMarkerData) * (markerCount + 1))) == NULL)
goto fail;
for(i = dest = 0; i < markerCount; i++)
{
READ_SHORT_BE(m[dest].id);
READ_LONG_BE(m[dest].position);
if (m[dest].id > 0)
dest++;
}
m[dest].id = 0;
*markers = m;
return 1;
fail:
if (m != NULL)
free(m);
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read marker chunk");
return 0;
}
static int AIFFGetMarkerPosition(int16_t id, const AIFFMarkerData *markers, uint32_t *position)
{
const AIFFMarkerData *marker;
marker = markers;
while(marker->id != 0)
{
if (marker->id == id)
{
*position = marker->position;
return 1;
}
marker++;
}
return 0;
}
/******************************/
#define WAVE_BUF_SIZE (1 << 11) /* should be power of 2 */
#define READ_WAVE_SAMPLE(dest, b, s) \
if (tf_read(dest, (b) * (s), 1, tf) != 1) \
goto fail
#define READ_WAVE_FRAME(dest, b, f) \
READ_WAVE_SAMPLE(dest, b, (f) * channels)
#define BITS_S8_TO_16(n) ((uint16_t)((n) << 8) | ((n) ^ 0x80))
#define BITS_U8_TO_16(n) ((uint16_t)(((n) ^ 0x80) << 8) | (n))
#define BLOCK_READ_BEGIN(stype, sbyte, fch) { /* sbyte may be sizeof(stype) */ \
stype data[WAVE_BUF_SIZE / sizeof(stype)]; \
int j; \
for(block_frame_count = (sizeof data / sbyte / fch); block_frame_count != 0; block_frame_count >>= 1) { \
while(i <= frames - block_frame_count) { \
READ_WAVE_FRAME(data, sbyte, block_frame_count); \
for(j = 0; j < (block_frame_count * (fch)); i++)
#define BLOCK_READ_END } } }
static int read_sample_data(int32_t flags, timidity_file *tf, int bits, int channels, int frames, sample_t **sdata)
{
int i, block_frame_count;
i = 0;
if (bits == 16)
{
if (channels == 1)
{
READ_WAVE_SAMPLE(sdata[0], 2, frames);
if (flags & SAMPLE_BIG_ENDIAN) {
#ifndef _BIG_ENDIAN_
for(i = 0; i < frames; i++)
sdata[0][i] = BE_SHORT(sdata[0][i]);
#endif
} else {
#ifdef _BIG_ENDIAN_
for(i = 0; i < frames; i++)
sdata[0][i] = LE_SHORT(sdata[0][i]);
#endif
}
} else {
if (flags & SAMPLE_BIG_ENDIAN) {
BLOCK_READ_BEGIN(uint16_t, 2, channels)
{
int c;
for(c = 0; c < channels; c++, j++)
sdata[c][i] = BE_SHORT(data[j]);
}
BLOCK_READ_END
} else {
BLOCK_READ_BEGIN(uint16_t, 2, channels)
{
int c;
for(c = 0; c < channels; c++, j++)
sdata[c][i] = LE_SHORT(data[j]);
}
BLOCK_READ_END
}
}
}
else
{
if (channels == 1)
{
if (flags & SAMPLE_8BIT_UNSIGNED) {
BLOCK_READ_BEGIN(uint8_t, 1, 1)
{
sdata[0][i] = BITS_U8_TO_16(data[j]); j++;
}
BLOCK_READ_END
} else {
BLOCK_READ_BEGIN(uint8_t, 1, 1)
{
sdata[0][i] = BITS_S8_TO_16(data[j]); j++;
}
BLOCK_READ_END
}
} else {
if (flags & SAMPLE_8BIT_UNSIGNED) {
BLOCK_READ_BEGIN(uint8_t, 1, channels)
{
int c;
for(c = 0; c < channels; c++, j++)
sdata[c][i] = BITS_U8_TO_16(data[j]);
}
BLOCK_READ_END
} else {
BLOCK_READ_BEGIN(uint8_t, 1, channels)
{
int c;
for(c = 0; c < channels; c++, j++)
sdata[c][i] = BITS_S8_TO_16(data[j]);
}
BLOCK_READ_END
}
}
}
return 1;
fail:
printMessage(CMSG_WARNING, VERB_VERBOSE, "Unable to read sample data");
return 0;
}
/* from instrum.c */
int32_t Instruments::convert_envelope_rate_s(uint8_t rate)
{
int32_t r;
r = 3 - ((rate >> 6) & 0x3);
r *= 3;
r = (int32_t)(rate & 0x3f) << r; /* 6.9 fixed point */
/* 15.15 fixed point. */
return (((r * 44100) / playback_rate) * control_ratio)
<< ((fast_decay) ? 10 : 9);
}
void Instruments::initialize_sample(Instrument *inst, int frames, int sample_bits, int sample_rate)
{
int i, j, samples;
Sample *sample;
const uint8_t *panning;
samples = inst->samples;
for(i = 0; i < samples; i++)
{
sample = &inst->sample[i];
sample->data_alloced = 0;
sample->loop_start = 0;
sample->loop_end = sample->data_length = frames << FRACTION_BITS;
sample->sample_rate = sample_rate;
sample->low_freq = freq_table[0];
sample->high_freq = freq_table[127];
sample->root_freq = freq_table[60];
sample->panning = 64;
sample->note_to_use = 0;
sample->volume = 1.0;
sample->modes = MODES_16BIT;
sample->low_vel = 0;
sample->high_vel = 127;
sample->tremolo_sweep_increment =
sample->tremolo_phase_increment = sample->tremolo_depth =
sample->vibrato_sweep_increment = sample->vibrato_control_ratio = sample->vibrato_depth = 0;
sample->cutoff_freq = sample->resonance = sample->tremolo_to_pitch =
sample->tremolo_to_fc = sample->modenv_to_pitch = sample->modenv_to_fc =
sample->vel_to_fc = sample->key_to_fc = sample->vel_to_resonance = 0;
sample->envelope_velf_bpo = sample->modenv_velf_bpo =
sample->vel_to_fc_threshold = 64;
sample->key_to_fc_bpo = 60;
sample->scale_freq = 60;
sample->scale_factor = 1024;
memset(sample->envelope_velf, 0, sizeof(sample->envelope_velf));
memset(sample->envelope_keyf, 0, sizeof(sample->envelope_keyf));
memset(sample->modenv_velf, 0, sizeof(sample->modenv_velf));
memset(sample->modenv_keyf, 0, sizeof(sample->modenv_keyf));
memset(sample->modenv_rate, 0, sizeof(sample->modenv_rate));
memset(sample->modenv_offset, 0, sizeof(sample->modenv_offset));
sample->envelope_delay = sample->modenv_delay =
sample->tremolo_delay = sample->vibrato_delay = 0;
sample->inst_type = INST_PCM;
sample->sample_type = SF_SAMPLETYPE_MONO;
sample->sf_sample_link = -1;
sample->sf_sample_index = 0;
}
if (samples <= 6 && (panning = gen_pan_list[samples - 1]) != NULL)
{
for(i = 0; i < samples; i++)
inst->sample[i].panning = panning[i];
}
for(i = 0; i < 6; i++)
{
int32_t envelope_rate, envelope_offset;
envelope_rate = convert_envelope_rate_s(63); /* wav2pat.c */
envelope_offset = convert_envelope_offset(240); /* wav2pat.c */
for(j = 0; j < samples; j++)
{
sample = &inst->sample[j];
sample->envelope_rate[i] = envelope_rate;
sample->envelope_offset[i] = envelope_offset;
}
}
}
static void apply_GeneralInstrumentInfo(int samples, Sample *sample, const GeneralInstrumentInfo *info)
{
int32_t root_freq;
double gain;
int i;
root_freq = freq_table[info->baseNote];
if (info->detune < 0)
{
if (info->baseNote != 0) /* no table data */
root_freq += (root_freq - freq_table[info->baseNote - 1]) * 50 / info->detune;
}
else if (info->detune > 0)
{
if (info->baseNote != 127) /* no table data */
root_freq += (freq_table[info->baseNote + 1] - root_freq) * 50 / info->detune;
}
gain = pow(10, info->gain / 20.0);
for(i = 0; i < samples; i++)
{
sample[i].low_freq = freq_table[info->lowNote];
sample[i].high_freq = freq_table[info->highNote];
sample[i].root_freq = root_freq;
sample[i].volume *= gain;
sample[i].low_vel = info->lowVelocity;
sample[i].high_vel = info->highVelocity;
}
}
/* Copyright (C) 1989-1991 Ken Turkowski. <turk@computer.org>
*
* All rights reserved.
*
* Warranty Information
* Even though I have reviewed this software, I make no warranty
* or representation, either express or implied, with respect to this
* software, its quality, accuracy, merchantability, or fitness for a
* particular purpose. As a result, this software is provided "as is,"
* and you, its user, are assuming the entire risk as to its quality
* and accuracy.
*
* This code may be used and freely distributed as long as it includes
* this copyright notice and the above warranty information.
*
* Machine-independent I/O routines for IEEE floating-point numbers.
*
* NaN's and infinities are converted to HUGE_VAL or HUGE, which
* happens to be infinity on IEEE machines. Unfortunately, it is
* impossible to preserve NaN's in a machine-independent way.
* Infinities are, however, preserved on IEEE machines.
*
* These routines have been tested on the following machines:
* Apple Macintosh, MPW 3.1 C compiler
* Apple Macintosh, THINK C compiler
* Silicon Graphics IRIS, MIPS compiler
* Cray X/MP and Y/MP
* Digital Equipment VAX
* Sequent Balance (Multiprocesor 386)
* NeXT
*
*
* Implemented by Malcolm Slaney and Ken Turkowski.
*
* Malcolm Slaney contributions during 1988-1990 include big- and little-
* endian file I/O, conversion to and from Motorola's extended 80-bit
* floating-point format, and conversions to and from IEEE single-
* precision floating-point format.
*
* In 1991, Ken Turkowski implemented the conversions to and from
* IEEE double-precision format, added more precision to the extended
* conversions, and accommodated conversions involving +/- infinity,
* NaN's, and denormalized numbers.
*/
/****************************************************************
* Extended precision IEEE floating-point conversion routines.
* Extended is an 80-bit number as defined by Motorola,
* with a sign bit, 15 bits of exponent (offset 16383?),
* and a 64-bit mantissa, with no hidden bit.
****************************************************************/
static double ConvertFromIeeeExtended(const char *bytes)
{
double f;
int32_t expon;
uint32_t hiMant, loMant;
expon = ((bytes[0] & 0x7F) << 8) | (bytes[1] & 0xFF);
hiMant = ((uint32_t)(bytes[2] & 0xFF) << 24)
| ((uint32_t)(bytes[3] & 0xFF) << 16)
| ((uint32_t)(bytes[4] & 0xFF) << 8)
| ((uint32_t)(bytes[5] & 0xFF));
loMant = ((uint32_t)(bytes[6] & 0xFF) << 24)
| ((uint32_t)(bytes[7] & 0xFF) << 16)
| ((uint32_t)(bytes[8] & 0xFF) << 8)
| ((uint32_t)(bytes[9] & 0xFF));
if (expon == 0 && hiMant == 0 && loMant == 0) {
f = 0;
}
else {
if (expon == 0x7FFF) { /* Infinity or NaN */
f = HUGE_VAL;
}
else {
expon -= 16383;
f = ldexp(hiMant, expon-=31);
f += ldexp(loMant, expon-=32);
}
}
if (bytes[0] & 0x80)
return -f;
else
return f;
}
}
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