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raze-gles/libraries/timidityplus/sffile.cpp

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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
*/
/*================================================================
* sffile.c
* read SoundFont file (SBK/SF2) and store the layer lists
*
* Copyright (C) 1996,1997 Takashi Iwai
*
* 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
*================================================================*/
/*
* Modified by Masanao Izumo <mo@goice.co.jp>
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "timidity.h"
#include "common.h"
#include "instrum.h"
namespace TimidityPlus
{
/*================================================================
* preset / instrument bag record
*================================================================*/
/*----------------------------------------------------------------
* function prototypes
*----------------------------------------------------------------*/
#define NEW(type,nums) (type*)safe_malloc(sizeof(type) * (nums))
static int READCHUNK(SFChunk *vp, timidity_file *tf)
{
if (tf_read(vp, 8, 1, tf) != 1)
return -1;
vp->size = LE_LONG(vp->size);
return 1;
}
static int READDW(uint32_t *vp, timidity_file *tf)
{
if (tf_read(vp, 4, 1, tf) != 1)
return -1;
*vp = LE_LONG(*vp);
return 1;
}
static int READW(uint16_t *vp, timidity_file *tf)
{
if (tf_read(vp, 2, 1, tf) != 1)
return -1;
*vp = LE_SHORT(*vp);
return 1;
}
static int READSTR(char *str, timidity_file *tf)
{
int n;
if (tf_read(str, 20, 1, tf) != 1)
return -1;
str[19] = '\0';
n = (int)strlen(str);
while (n > 0 && str[n - 1] == ' ')
n--;
str[n] = '\0';
return n;
}
#define READID(var,tf) tf_read(var, 4, 1, tf)
#define READB(var,tf) tf_read(&var, 1, 1, tf)
#define SKIPB(tf) skip(tf, 1)
#define SKIPW(tf) skip(tf, 2)
#define SKIPDW(tf) skip(tf, 4)
#define FSKIP(size,tf) skip(tf, size)
/*----------------------------------------------------------------*/
/*----------------------------------------------------------------
* id numbers
*----------------------------------------------------------------*/
enum {
/* level 0; chunk */
UNKN_ID, RIFF_ID, LIST_ID, SFBK_ID,
/* level 1; id only */
INFO_ID, SDTA_ID, PDTA_ID,
/* info stuff; chunk */
IFIL_ID, ISNG_ID, IROM_ID, INAM_ID, IVER_ID, IPRD_ID, ICOP_ID,
ICRD_ID, IENG_ID, ISFT_ID, ICMT_ID,
/* sample data stuff; chunk */
SNAM_ID, SMPL_ID,
/* preset stuff; chunk */
PHDR_ID, PBAG_ID, PMOD_ID, PGEN_ID,
/* inst stuff; chunk */
INST_ID, IBAG_ID, IMOD_ID, IGEN_ID,
/* sample header; chunk */
SHDR_ID
};
/*================================================================
* load a soundfont file
*================================================================*/
int Instruments::load_soundfont(SFInfo *sf, timidity_file *fd)
{
SFChunk chunk;
sf->preset = NULL;
sf->sample = NULL;
sf->inst = NULL;
sf->sf_name = NULL;
prbags.bag = inbags.bag = NULL;
prbags.gen = inbags.gen = NULL;
prbags.nbags = inbags.nbags =
prbags.ngens = inbags.ngens = 0;
/* check RIFF file header */
READCHUNK(&chunk, fd);
if (chunkid(chunk.id) != RIFF_ID) {
printMessage(CMSG_ERROR, VERB_NORMAL,
"%s: *** not a RIFF file", fd->filename.c_str());
return -1;
}
/* check file id */
READID(chunk.id, fd);
if (chunkid(chunk.id) != SFBK_ID) {
printMessage(CMSG_ERROR, VERB_NORMAL,
"%s: *** not a SoundFont file", fd->filename.c_str());
return -1;
}
for (;;) {
if (READCHUNK(&chunk, fd) <= 0)
break;
else if (chunkid(chunk.id) == LIST_ID) {
if (process_list(chunk.size, sf, fd))
break;
}
else {
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: *** illegal id in level 0: %4.4s %4d", fd->filename.c_str(), chunk.id, chunk.size);
FSKIP(chunk.size, fd);
// Not aborting here will inevitably crash.
return -1;
}
}
/* parse layer structure */
convert_layers(sf);
/* free private tables */
if (prbags.bag) free(prbags.bag);
if (prbags.gen) free(prbags.gen);
if (inbags.bag) free(inbags.bag);
if (inbags.gen) free(inbags.gen);
return 0;
}
/*================================================================
* free buffer
*================================================================*/
void Instruments::free_soundfont(SFInfo *sf)
{
int i;
if (sf->preset) {
for (i = 0; i < sf->npresets; i++)
free_layer(&sf->preset[i].hdr);
free(sf->preset);
}
if (sf->inst) {
for (i = 0; i < sf->ninsts; i++)
free_layer(&sf->inst[i].hdr);
free(sf->inst);
}
if (sf->sample) free(sf->sample);
if (sf->sf_name) free(sf->sf_name);
}
/*----------------------------------------------------------------
* get id value from 4bytes ID string
*----------------------------------------------------------------*/
int Instruments::chunkid(char *id)
{
static struct idstring {
const char *str;
int id;
} idlist[] = {
{"RIFF", RIFF_ID},
{"LIST", LIST_ID},
{"sfbk", SFBK_ID},
{"INFO", INFO_ID},
{"sdta", SDTA_ID},
{"snam", SNAM_ID},
{"smpl", SMPL_ID},
{"pdta", PDTA_ID},
{"phdr", PHDR_ID},
{"pbag", PBAG_ID},
{"pmod", PMOD_ID},
{"pgen", PGEN_ID},
{"inst", INST_ID},
{"ibag", IBAG_ID},
{"imod", IMOD_ID},
{"igen", IGEN_ID},
{"shdr", SHDR_ID},
{"ifil", IFIL_ID},
{"isng", ISNG_ID},
{"irom", IROM_ID},
{"iver", IVER_ID},
{"INAM", INAM_ID},
{"IPRD", IPRD_ID},
{"ICOP", ICOP_ID},
{"ICRD", ICRD_ID},
{"IENG", IENG_ID},
{"ISFT", ISFT_ID},
{"ICMT", ICMT_ID},
};
for (unsigned i = 0; i < sizeof(idlist) / sizeof(idlist[0]); i++) {
if (strncmp(id, idlist[i].str, 4) == 0)
return idlist[i].id;
}
return UNKN_ID;
}
/*================================================================
* process a list chunk
*================================================================*/
int Instruments::process_list(int size, SFInfo *sf, timidity_file *fd)
{
SFChunk chunk;
/* read the following id string */
READID(chunk.id, fd); size -= 4;
printMessage(CMSG_INFO, VERB_DEBUG, "%c%c%c%c:",
chunk.id[0], chunk.id[1], chunk.id[2], chunk.id[3]);
switch (chunkid(chunk.id)) {
case INFO_ID:
return process_info(size, sf, fd);
case SDTA_ID:
return process_sdta(size, sf, fd);
case PDTA_ID:
return process_pdta(size, sf, fd);
default:
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: *** illegal id in level 1: %4.4s", fd->filename.c_str(), chunk.id);
FSKIP(size, fd); /* skip it */
return 0;
}
}
/*================================================================
* process info list
*================================================================*/
int Instruments::process_info(int size, SFInfo *sf, timidity_file *fd)
{
sf->infopos = tf_tell(fd);
sf->infosize = size;
/* parse the buffer */
while (size > 0) {
SFChunk chunk;
/* read a sub chunk */
if (READCHUNK(&chunk, fd) <= 0)
return -1;
size -= 8;
printMessage(CMSG_INFO, VERB_DEBUG, " %c%c%c%c:",
chunk.id[0], chunk.id[1], chunk.id[2], chunk.id[3]);
switch (chunkid(chunk.id)) {
case IFIL_ID:
/* soundfont file version */
READW(&sf->version, fd);
READW(&sf->minorversion, fd);
printMessage(CMSG_INFO, VERB_DEBUG,
" version %d, minor %d",
sf->version, sf->minorversion);
break;
case INAM_ID:
/* name of the font */
sf->sf_name = (char*)safe_malloc(chunk.size + 1);
tf_read(sf->sf_name, 1, chunk.size, fd);
sf->sf_name[chunk.size] = 0;
printMessage(CMSG_INFO, VERB_DEBUG,
" name %s", sf->sf_name);
break;
default:
FSKIP(chunk.size, fd);
break;
}
size -= chunk.size;
}
return 0;
}
/*================================================================
* process sample data list
*================================================================*/
int Instruments::process_sdta(int size, SFInfo *sf, timidity_file *fd)
{
while (size > 0) {
SFChunk chunk;
/* read a sub chunk */
if (READCHUNK(&chunk, fd) <= 0)
return -1;
size -= 8;
printMessage(CMSG_INFO, VERB_DEBUG, " %c%c%c%c:",
chunk.id[0], chunk.id[1], chunk.id[2], chunk.id[3]);
switch (chunkid(chunk.id)) {
case SNAM_ID:
/* sample name list */
load_sample_names(chunk.size, sf, fd);
break;
case SMPL_ID:
/* sample data starts from here */
sf->samplepos = tf_tell(fd);
sf->samplesize = chunk.size;
FSKIP(chunk.size, fd);
break;
default:
FSKIP(chunk.size, fd);
break;
}
size -= chunk.size;
}
return 0;
}
/*================================================================
* process preset data list
*================================================================*/
int Instruments::process_pdta(int size, SFInfo *sf, timidity_file *fd)
{
while (size > 0) {
SFChunk chunk;
/* read a subchunk */
if (READCHUNK(&chunk, fd) <= 0)
return -1;
size -= 8;
printMessage(CMSG_INFO, VERB_DEBUG, " %c%c%c%c:",
chunk.id[0], chunk.id[1], chunk.id[2], chunk.id[3]);
switch (chunkid(chunk.id)) {
case PHDR_ID:
load_preset_header(chunk.size, sf, fd);
break;
case PBAG_ID:
load_bag(chunk.size, &prbags, fd);
break;
case PGEN_ID:
load_gen(chunk.size, &prbags, fd);
break;
case INST_ID:
load_inst_header(chunk.size, sf, fd);
break;
case IBAG_ID:
load_bag(chunk.size, &inbags, fd);
break;
case IGEN_ID:
load_gen(chunk.size, &inbags, fd);
break;
case SHDR_ID:
load_sample_info(chunk.size, sf, fd);
break;
case PMOD_ID: /* ignored */
case IMOD_ID: /* ingored */
default:
FSKIP(chunk.size, fd);
break;
}
size -= chunk.size;
}
return 0;
}
/*----------------------------------------------------------------
* store sample name list; sf1 only
*----------------------------------------------------------------*/
void Instruments::load_sample_names(int size, SFInfo *sf, timidity_file *fd)
{
int i, nsamples;
if (sf->version > 1) {
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: *** version 2 has obsolete format??",fd->filename.c_str());
FSKIP(size, fd);
return;
}
/* each sample name has a fixed lentgh (20 bytes) */
nsamples = size / 20;
if (sf->sample == NULL) {
sf->nsamples = nsamples;
sf->sample = NEW(SFSampleInfo, sf->nsamples);
}
else if (sf->nsamples != nsamples) {
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: *** different # of samples ?? (%d : %d)\n",fd->filename.c_str(), sf->nsamples, nsamples);
FSKIP(size, fd);
return;
}
/* read each name from file */
for (i = 0; i < sf->nsamples; i++) {
READSTR(sf->sample[i].name, fd);
}
}
/*----------------------------------------------------------------
* preset header list
*----------------------------------------------------------------*/
void Instruments::load_preset_header(int size, SFInfo *sf, timidity_file *fd)
{
int i;
sf->npresets = size / 38;
sf->preset = NEW(SFPresetHdr, sf->npresets);
for (i = 0; i < sf->npresets; i++) {
READSTR(sf->preset[i].hdr.name, fd);
READW(&sf->preset[i].preset, fd);
READW(&sf->preset[i].bank, fd);
READW(&sf->preset[i].hdr.bagNdx, fd);
SKIPDW(fd); /* lib; ignored*/
SKIPDW(fd); /* genre; ignored */
SKIPDW(fd); /* morph; ignored */
/* initialize layer table; it'll be parsed later */
sf->preset[i].hdr.nlayers = 0;
sf->preset[i].hdr.layer = NULL;
}
}
/*----------------------------------------------------------------
* instrument header list
*----------------------------------------------------------------*/
void Instruments::load_inst_header(int size, SFInfo *sf, timidity_file *fd)
{
int i;
sf->ninsts = size / 22;
sf->inst = NEW(SFInstHdr, sf->ninsts);
for (i = 0; i < sf->ninsts; i++) {
READSTR(sf->inst[i].hdr.name, fd);
READW(&sf->inst[i].hdr.bagNdx, fd);
/* iniitialize layer table; it'll be parsed later */
sf->inst[i].hdr.nlayers = 0;
sf->inst[i].hdr.layer = NULL;
printMessage(CMSG_INFO, VERB_DEBUG,
" InstHdr %d (%s) bagNdx=%d",
i, sf->inst[i].hdr.name, sf->inst[i].hdr.bagNdx);
}
}
/*----------------------------------------------------------------
* load preset/instrument bag list on the private table
*----------------------------------------------------------------*/
void Instruments::load_bag(int size, SFBags *bagp, timidity_file *fd)
{
int i;
size /= 4;
bagp->bag = NEW(uint16_t, size);
for (i = 0; i < size; i++) {
READW(&bagp->bag[i], fd);
SKIPW(fd); /* mod; ignored */
}
bagp->nbags = size;
}
/*----------------------------------------------------------------
* load preset/instrument generator list on the private table
*----------------------------------------------------------------*/
void Instruments::load_gen(int size, SFBags *bagp, timidity_file *fd)
{
int i;
size /= 4;
bagp->gen = NEW(SFGenRec, size);
for (i = 0; i < size; i++) {
READW((uint16_t *)&bagp->gen[i].oper, fd);
READW((uint16_t *)&bagp->gen[i].amount, fd);
}
bagp->ngens = size;
}
/*----------------------------------------------------------------
* load sample info list
*----------------------------------------------------------------*/
void Instruments::load_sample_info(int size, SFInfo *sf, timidity_file *fd)
{
int i;
int in_rom;
/* the record size depends on the soundfont version */
if (sf->version > 1) {
/* SF2 includes sample name and other infos */
sf->nsamples = size / 46;
sf->sample = NEW(SFSampleInfo, sf->nsamples);
}
else {
/* SBK; sample name may be read already */
int nsamples = size / 16;
if (sf->sample == NULL) {
sf->nsamples = nsamples;
sf->sample = NEW(SFSampleInfo, sf->nsamples);
}
else if (sf->nsamples != nsamples) {
/* overwrite it */
sf->nsamples = nsamples;
}
}
in_rom = 1; /* data may start from ROM samples */
for (i = 0; i < sf->nsamples; i++) {
if (sf->version > 1) /* SF2 only */
READSTR(sf->sample[i].name, fd);
READDW((uint32_t *)&sf->sample[i].startsample, fd);
READDW((uint32_t *)&sf->sample[i].endsample, fd);
READDW((uint32_t *)&sf->sample[i].startloop, fd);
READDW((uint32_t *)&sf->sample[i].endloop, fd);
if (sf->version > 1) { /* SF2 only */
READDW((uint32_t *)&sf->sample[i].samplerate, fd);
READB(sf->sample[i].originalPitch, fd);
READB(sf->sample[i].pitchCorrection, fd);
READW(&sf->sample[i].samplelink, fd);
READW(&sf->sample[i].sampletype, fd);
}
else { /* for SBK; set missing infos */
sf->sample[i].samplerate = 44100;
sf->sample[i].originalPitch = 60;
sf->sample[i].pitchCorrection = 0;
sf->sample[i].samplelink = 0;
/* the first RAM data starts from address 0 */
if (sf->sample[i].startsample == 0)
in_rom = 0;
if (in_rom)
sf->sample[i].sampletype = 0x8001;
else
sf->sample[i].sampletype = 1;
}
}
}
/*================================================================
* convert from bags to layers
*================================================================*/
void Instruments::convert_layers(SFInfo *sf)
{
int i;
if (prbags.bag == NULL || prbags.gen == NULL ||
inbags.bag == NULL || inbags.gen == NULL) {
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: *** illegal bags / gens", sf->sf_name);
return;
}
for (i = 0; i < sf->npresets - 1; i++) {
generate_layers(&sf->preset[i].hdr,
&sf->preset[i + 1].hdr,
&prbags);
}
for (i = 0; i < sf->ninsts - 1; i++) {
generate_layers(&sf->inst[i].hdr,
&sf->inst[i + 1].hdr,
&inbags);
}
}
/*----------------------------------------------------------------
* generate layer lists from stored bags
*----------------------------------------------------------------*/
void Instruments::generate_layers(SFHeader *hdr, SFHeader *next, SFBags *bags)
{
int i;
SFGenLayer *layp;
hdr->nlayers = next->bagNdx - hdr->bagNdx;
if (hdr->nlayers < 0) {
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: illegal layer numbers %d", "", hdr->nlayers);
return;
}
if (hdr->nlayers == 0)
return;
hdr->layer = (SFGenLayer*)safe_malloc(sizeof(SFGenLayer) * hdr->nlayers);
layp = hdr->layer;
for (layp = hdr->layer, i = hdr->bagNdx; i < next->bagNdx; layp++, i++) {
int genNdx = bags->bag[i];
layp->nlists = bags->bag[i + 1] - genNdx;
if (layp->nlists < 0) {
printMessage(CMSG_WARNING, VERB_NORMAL, "%s: illegal list numbers %d", "", layp->nlists);
return;
}
layp->list = (SFGenRec*)safe_malloc(sizeof(SFGenRec) * layp->nlists);
memcpy(layp->list, &bags->gen[genNdx],
sizeof(SFGenRec) * layp->nlists);
}
}
/*----------------------------------------------------------------
* free a layer
*----------------------------------------------------------------*/
void Instruments::free_layer(SFHeader *hdr)
{
int i;
for (i = 0; i < hdr->nlayers; i++) {
SFGenLayer *layp = &hdr->layer[i];
if (layp->nlists >= 0)
free(layp->list);
}
if (hdr->nlayers > 0)
free(hdr->layer);
}
/* add blank loop for each data */
static const int auto_add_blank = 0;
void Instruments::correct_samples(SFInfo *sf)
{
int i;
SFSampleInfo *sp;
int prev_end;
prev_end = 0;
for (sp = sf->sample, i = 0; i < sf->nsamples; i++, sp++) {
/* correct sample positions for SBK file */
if (sf->version == 1) {
sp->startloop++;
sp->endloop += 2;
}
/* calculate sample data size */
if (sp->sampletype & 0x8000)
sp->size = 0;
else if (sp->startsample < prev_end && sp->startsample != 0)
sp->size = 0;
else {
sp->size = -1;
if (!auto_add_blank && i != sf->nsamples - 1)
sp->size = sp[1].startsample - sp->startsample;
if (sp->size < 0)
sp->size = sp->endsample - sp->startsample + 48;
}
prev_end = sp->endsample;
/* calculate short-shot loop size */
if (auto_add_blank || i == sf->nsamples - 1)
sp->loopshot = 48;
else {
sp->loopshot = sp[1].startsample - sp->endsample;
if (sp->loopshot < 0 || sp->loopshot > 48)
sp->loopshot = 48;
}
}
}
}
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