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vgmstream/src/meta/txth.c

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Add TXTH generic header format It's a single text file with basic read commands; similar to GENH but meant to simplify addition/distribution of (semi)headerless formats
2017-07-15 11:49:28 +02:00
#include "meta.h"
#include "../coding/coding.h"
#include "../layout/layout.h"
#include "../util.h"
/* known TXTH types */
typedef enum {
PSX = 0, /* PSX ADPCM */
XBOX = 1, /* XBOX IMA ADPCM */
NGC_DTK = 2, /* NGC ADP/DTK ADPCM */
PCM16BE = 3, /* 16bit big endian PCM */
PCM16LE = 4, /* 16bit little endian PCM */
PCM8 = 5, /* 8bit PCM */
SDX2 = 6, /* SDX2 (3D0 games) */
DVI_IMA = 7, /* DVI IMA ADPCM */
MPEG = 8, /* MPEG (MP3) */
IMA = 9, /* IMA ADPCM */
AICA = 10, /* AICA ADPCM (dreamcast) */
MSADPCM = 11, /* MS ADPCM (windows) */
NGC_DSP = 12, /* NGC DSP (GC) */
PCM8_U_int = 13, /* 8bit unsigned PCM (interleaved) */
PSX_bf = 14, /* PSX ADPCM bad flagged */
MS_IMA = 15, /* Microsoft IMA ADPCM */
PCM8_U = 16, /* 8bit unsigned PCM */
APPLE_IMA4 = 17, /* Apple Quicktime 4-bit IMA ADPCM */
ATRAC3 = 18, /* raw ATRAC3 */
ATRAC3PLUS = 19, /* raw ATRAC3PLUS */
XMA1 = 20, /* raw XMA1 */
XMA2 = 21, /* raw XMA2 */
FFMPEG = 22, /* any headered FFmpeg format */
} txth_type;
typedef struct {
txth_type codec;
txth_type codec_mode;
uint32_t interleave;
uint32_t id_value;
uint32_t id_offset;
uint32_t channels;
uint32_t sample_rate;
uint32_t data_size;
int data_size_set;
uint32_t start_offset;
int sample_type_bytes;
uint32_t num_samples;
uint32_t loop_start_sample;
uint32_t loop_end_sample;
uint32_t loop_adjust;
int skip_samples_set;
uint32_t skip_samples;
uint32_t loop_flag;
int loop_flag_set;
uint32_t coef_offset;
uint32_t coef_spacing;
uint32_t coef_mode;
uint32_t coef_big_endian;
} txth_header;
static int parse_txth(STREAMFILE * streamFile, STREAMFILE * streamText, txth_header * txth);
static int parse_keyval(STREAMFILE * streamFile, STREAMFILE * streamText, txth_header * txth, const char * key, const char * val);
static int parse_num(STREAMFILE * streamFile, const char * val, uint32_t * out_value);
static int get_bytes_to_samples(txth_header * txth, uint32_t bytes);
/* TXTH - an artificial "generic" header for headerless streams.
* Similar to GENH, but with a single separate .txth file in the dir and text-based. */
VGMSTREAM * init_vgmstream_txth(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
STREAMFILE * streamText = NULL;
txth_header txth;
coding_t coding;
int i, j;
/* no need for ID or ext checks -- if a .TXTH exists all is good
* (player still needs to accept the ext, so at worst rename to .vgmstream) */
{
char filename[PATH_LIMIT];
char fileext[PATH_LIMIT];
/* try "(path/)(name.ext).txth" */
if (!get_streamfile_name(streamFile,filename,PATH_LIMIT)) goto fail;
strcat(filename, ".txth");
streamText = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (streamText) goto found;
/* try "(path/)(.ext).txth" */
if (!get_streamfile_path(streamFile,filename,PATH_LIMIT)) goto fail;
if (!get_streamfile_ext(streamFile,fileext,PATH_LIMIT)) goto fail;
strcat(filename,".");
strcat(filename, fileext);
strcat(filename, ".txth");
streamText = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (streamText) goto found;
/* try "(path/).txth" */
if (!get_streamfile_path(streamFile,filename,PATH_LIMIT)) goto fail;
strcat(filename, ".txth");
streamText = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (streamText) goto found;
/* not found */
goto fail;
}
found:
/* process the text file */
memset(&txth,0,sizeof(txth_header));
if (!parse_txth(streamFile, streamText, &txth))
goto fail;
/* type to coding conversion */
switch (txth.codec) {
case PSX: coding = coding_PSX; break;
case XBOX: coding = coding_XBOX; break;
case NGC_DTK: coding = coding_NGC_DTK; break;
case PCM16BE: coding = coding_PCM16BE; break;
case PCM16LE: coding = coding_PCM16LE; break;
case PCM8: coding = coding_PCM8; break;
case SDX2: coding = coding_SDX2; break;
case DVI_IMA: coding = coding_DVI_IMA; break;
#ifdef VGM_USE_MPEG
Simplify MPEG coding/layouts to allow blocked layouts and future changes
2017-07-29 13:05:23 +02:00
case MPEG: coding = coding_MPEG_layer3; break; /* we later find out exactly which */
Add TXTH generic header format It's a single text file with basic read commands; similar to GENH but meant to simplify addition/distribution of (semi)headerless formats
2017-07-15 11:49:28 +02:00
#endif
case IMA: coding = coding_IMA; break;
case AICA: coding = coding_AICA; break;
case MSADPCM: coding = coding_MSADPCM; break;
case NGC_DSP: coding = coding_NGC_DSP; break;
case PCM8_U_int: coding = coding_PCM8_U_int; break;
case PSX_bf: coding = coding_PSX_badflags; break;
case MS_IMA: coding = coding_MS_IMA; break;
case PCM8_U: coding = coding_PCM8_U; break;
case APPLE_IMA4: coding = coding_APPLE_IMA4; break;
#ifdef VGM_USE_FFMPEG
case ATRAC3:
case ATRAC3PLUS:
case XMA1:
case XMA2:
case FFMPEG: coding = coding_FFmpeg; break;
#endif
default:
goto fail;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(txth.channels,txth.loop_flag);
if (!vgmstream) goto fail;
vgmstream->sample_rate = txth.sample_rate;
vgmstream->num_samples = txth.num_samples;
vgmstream->loop_start_sample = txth.loop_start_sample;
vgmstream->loop_end_sample = txth.loop_end_sample;
/* codec specific (taken from GENH with minimal changes) */
switch (coding) {
case coding_PCM8_U_int:
vgmstream->layout_type = layout_none;
break;
case coding_PCM16LE:
case coding_PCM16BE:
case coding_PCM8:
case coding_PCM8_U:
case coding_SDX2:
case coding_PSX:
case coding_PSX_badflags:
case coding_DVI_IMA:
case coding_IMA:
case coding_AICA:
case coding_APPLE_IMA4:
vgmstream->interleave_block_size = txth.interleave;
if (vgmstream->channels > 1)
{
if (coding == coding_SDX2) {
coding = coding_SDX2_int;
}
if (vgmstream->interleave_block_size==0xffffffff || vgmstream->interleave_block_size == 0) {
vgmstream->layout_type = layout_none;
}
else {
vgmstream->layout_type = layout_interleave;
if (coding == coding_DVI_IMA)
coding = coding_DVI_IMA_int;
if (coding == coding_IMA)
coding = coding_IMA_int;
}
/* to avoid endless loops */
if (!txth.interleave && (
coding == coding_PSX ||
coding == coding_PSX_badflags ||
coding == coding_IMA_int ||
coding == coding_DVI_IMA_int ||
coding == coding_SDX2_int) ) {
goto fail;
}
} else {
vgmstream->layout_type = layout_none;
}
/* setup adpcm */
if (coding == coding_AICA) {
int i;
for (i=0;i<vgmstream->channels;i++) {
vgmstream->ch[i].adpcm_step_index = 0x7f;
}
}
break;
case coding_MS_IMA:
if (!txth.interleave) goto fail; /* creates garbage */
vgmstream->interleave_block_size = txth.interleave;
vgmstream->layout_type = layout_none;
break;
case coding_MSADPCM:
if (vgmstream->channels > 2) goto fail;
if (!txth.interleave) goto fail; /* creates garbage */
vgmstream->interleave_block_size = txth.interleave;
vgmstream->layout_type = layout_none;
break;
case coding_XBOX:
vgmstream->layout_type = layout_none;
break;
case coding_NGC_DTK:
if (vgmstream->channels != 2) goto fail;
vgmstream->layout_type = layout_none;
break;
case coding_NGC_DSP:
if (txth.channels > 1 && txth.codec_mode == 0) {
if (!txth.interleave) goto fail;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = txth.interleave;
} else if (txth.channels > 1 && txth.codec_mode == 1) {
if (!txth.interleave) goto fail;
vgmstream->layout_type = layout_interleave_byte;
vgmstream->interleave_block_size = txth.interleave;
} else if (txth.channels == 1 || txth.codec_mode == 2) {
vgmstream->layout_type = layout_none;
} else {
goto fail;
}
/* get coefs */
for (i=0;i<vgmstream->channels;i++) {
int16_t (*read_16bit)(off_t , STREAMFILE*) = txth.coef_big_endian ? read_16bitBE : read_16bitLE;
/* normal/split coefs */
if (txth.coef_mode == 0) {
for (j=0;j<16;j++) {
vgmstream->ch[i].adpcm_coef[j] = read_16bit(txth.coef_offset + i*txth.coef_spacing + j*2,streamFile);
}
} else {
goto fail; //IDK what is this
/*
for (j=0;j<8;j++) {
vgmstream->ch[i].adpcm_coef[j*2]=read_16bit(coef[i]+j*2,streamFile);
vgmstream->ch[i].adpcm_coef[j*2+1]=read_16bit(coef_splitted[i]+j*2,streamFile);
}
*/
}
}
break;
#ifdef VGM_USE_MPEG
Simplify MPEG coding/layouts to allow blocked layouts and future changes
2017-07-29 13:05:23 +02:00
case coding_MPEG_layer3:
vgmstream->layout_type = layout_none;
Add TXTH generic header format It's a single text file with basic read commands; similar to GENH but meant to simplify addition/distribution of (semi)headerless formats
2017-07-15 11:49:28 +02:00
vgmstream->codec_data = init_mpeg_codec_data(streamFile, txth.start_offset, &coding, vgmstream->channels);
if (!vgmstream->codec_data) goto fail;
break;
#endif
#ifdef VGM_USE_FFMPEG
case coding_FFmpeg: {
ffmpeg_codec_data *ffmpeg_data = NULL;
if (txth.codec == FFMPEG) {
/* default FFmpeg */
ffmpeg_data = init_ffmpeg_offset(streamFile, txth.start_offset,txth.data_size);
if ( !ffmpeg_data ) goto fail;
}
else {
/* fake header FFmpeg */
uint8_t buf[200];
int32_t bytes;
if (txth.codec == ATRAC3) {
int block_size = txth.interleave;
int joint_stereo;
switch(txth.codec_mode) {
case 0: joint_stereo = vgmstream->channels > 1 && txth.interleave/vgmstream->channels==0x60 ? 1 : 0; break; /* autodetect */
case 1: joint_stereo = 1; break; /* force joint stereo */
case 2: joint_stereo = 0; break; /* force stereo */
default: goto fail;
}
bytes = ffmpeg_make_riff_atrac3(buf, 200, vgmstream->num_samples, txth.data_size, vgmstream->channels, vgmstream->sample_rate, block_size, joint_stereo, txth.skip_samples);
}
else if (txth.codec == ATRAC3PLUS) {
int block_size = txth.interleave;
bytes = ffmpeg_make_riff_atrac3plus(buf, 200, vgmstream->num_samples, txth.data_size, vgmstream->channels, vgmstream->sample_rate, block_size, txth.skip_samples);
}
else if (txth.codec == XMA1) {
int xma_stream_mode = txth.codec_mode == 1 ? 1 : 0;
bytes = ffmpeg_make_riff_xma1(buf, 100, vgmstream->num_samples, txth.data_size, vgmstream->channels, vgmstream->sample_rate, xma_stream_mode);
}
else if (txth.codec == XMA2) {
int block_size = txth.interleave ? txth.interleave : 2048;
int block_count = txth.data_size / block_size;
bytes = ffmpeg_make_riff_xma2(buf, 200, vgmstream->num_samples, txth.data_size, vgmstream->channels, vgmstream->sample_rate, block_count, block_size);
}
else {
goto fail;
}
if (bytes <= 0) goto fail;
ffmpeg_data = init_ffmpeg_header_offset(streamFile, buf,bytes, txth.start_offset,txth.data_size);
if ( !ffmpeg_data ) goto fail;
}
vgmstream->codec_data = ffmpeg_data;
vgmstream->layout_type = layout_none;
/* force encoder delay */
if (txth.skip_samples_set) {
ffmpeg_set_skip_samples(ffmpeg_data, txth.skip_samples);
}
break;
}
#endif
default:
break;
}
#ifdef VGM_USE_FFMPEG
if (txth.sample_type_bytes && (txth.codec == XMA1 || txth.codec == XMA2)) {
/* manually find sample offsets */
ms_sample_data msd;
memset(&msd,0,sizeof(ms_sample_data));
msd.xma_version = 1;
msd.channels = txth.channels;
msd.data_offset = txth.start_offset;
msd.data_size = txth.data_size;
msd.loop_flag = txth.loop_flag;
msd.loop_start_b = txth.loop_start_sample;
msd.loop_end_b = txth.loop_end_sample;
msd.loop_start_subframe = txth.loop_adjust & 0xF; /* lower 4b: subframe where the loop starts, 0..4 */
msd.loop_end_subframe = txth.loop_adjust >> 4; /* upper 4b: subframe where the loop ends, 0..3 */
xma_get_samples(&msd, streamFile);
vgmstream->num_samples = msd.num_samples;
vgmstream->loop_start_sample = msd.loop_start_sample;
vgmstream->loop_end_sample = msd.loop_end_sample;
//skip_samples = msd.skip_samples; //todo add skip samples
}
#endif
vgmstream->coding_type = coding;
vgmstream->meta_type = meta_TXTH;
if ( !vgmstream_open_stream(vgmstream,streamFile,txth.start_offset) )
goto fail;
if (streamText) close_streamfile(streamText);
return vgmstream;
fail:
if (streamText) close_streamfile(streamText);
close_vgmstream(vgmstream);
return NULL;
}
/* Simple text parser of "key = value" lines.
* The code is meh and error handling not exactly the best. */
static int parse_txth(STREAMFILE * streamFile, STREAMFILE * streamText, txth_header * txth) {
off_t off = 0;
off_t file_size = get_streamfile_size(streamText);
Fix for macOS, possibly other Unices.
2017-07-24 01:47:43 +02:00
#ifndef LINE_MAX /* some platforms define this via limits.h */
Fix constexpr to enum for old MSVC.
2017-07-24 01:28:37 +02:00
#if defined(_MSC_VER) && (_MSC_VER < 1900)
enum { LINE_MAX = 0x2000 };
#else
const size_t LINE_MAX = 0x2000; /* arbitrary max */
Fix for macOS, possibly other Unices.
2017-07-24 01:47:43 +02:00
#endif
Fix constexpr to enum for old MSVC.
2017-07-24 01:28:37 +02:00
#endif
Add TXTH generic header format It's a single text file with basic read commands; similar to GENH but meant to simplify addition/distribution of (semi)headerless formats
2017-07-15 11:49:28 +02:00
txth->data_size = get_streamfile_size(streamFile); /* for later use */
/* skip BOM if needed */
if (read_16bitLE(0x00, streamText) == 0xFFFE || read_16bitLE(0x00, streamText) == 0xFEFF)
off = 0x02;
/* read lines */
while (off < file_size) {
char line[LINE_MAX];
char key[LINE_MAX];
char val[LINE_MAX]; /* at least as big as a line to avoid overflows (I hope) */
int ok;
off_t line_start = off, line_end = 0;
line[0] = key[0] = val[0] = 0;
/* find line end */
while (line_end == 0 && off - line_start < LINE_MAX) {
char c = (char)read_8bit(off, streamText);
if (c == '\n')
line_end = off;
else if (off >= file_size)
line_end = off-1;
off++;
}
if (line_end == 0)
goto fail; /* bad file / line too long */
/* get key/val (ignores lead/trail spaces, stops at space/comment/separator) */
read_streamfile((uint8_t*)line,line_start,line_end, streamText);
line[line_end - line_start + 1] = '\0';
ok = sscanf(line, " %[^ \t#=] = %[^ \t#\r\n] ", key,val);
//VGM_LOG("TXTH: ok=%i, key=\"%s\", val=\"%s\" from 0x%lx to 0x%lx\n", ok, key, val, line_start, line_end);
if (ok != 2) /* ignore line if no key=val (comment or garbage) */
continue;
if (!parse_keyval(streamFile, streamText, txth, key, val)) /* read key/val */
goto fail;
}
if (!txth->loop_flag_set)
txth->loop_flag = txth->loop_end_sample && txth->loop_end_sample != 0xFFFFFFFF;
return 1;
fail:
return 0;
}
static int parse_keyval(STREAMFILE * streamFile, STREAMFILE * streamText, txth_header * txth, const char * key, const char * val) {
if (0==strcmp(key,"codec")) {
if (0==strcmp(val,"PSX")) txth->codec = PSX;
else if (0==strcmp(val,"XBOX")) txth->codec = XBOX;
else if (0==strcmp(val,"NGC_DTK")) txth->codec = NGC_DTK;
else if (0==strcmp(val,"PCM16BE")) txth->codec = PCM16BE;
else if (0==strcmp(val,"PCM16LE")) txth->codec = PCM16LE;
else if (0==strcmp(val,"PCM8")) txth->codec = PCM8;
else if (0==strcmp(val,"SDX2")) txth->codec = SDX2;
else if (0==strcmp(val,"DVI_IMA")) txth->codec = DVI_IMA;
else if (0==strcmp(val,"MPEG")) txth->codec = MPEG;
else if (0==strcmp(val,"IMA")) txth->codec = IMA;
else if (0==strcmp(val,"AICA")) txth->codec = AICA;
else if (0==strcmp(val,"MSADPCM")) txth->codec = MSADPCM;
else if (0==strcmp(val,"NGC_DSP")) txth->codec = NGC_DSP;
else if (0==strcmp(val,"PCM8_U_int")) txth->codec = PCM8_U_int;
else if (0==strcmp(val,"PSX_bf")) txth->codec = PSX_bf;
else if (0==strcmp(val,"MS_IMA")) txth->codec = MS_IMA;
else if (0==strcmp(val,"PCM8_U")) txth->codec = PCM8_U;
else if (0==strcmp(val,"APPLE_IMA4")) txth->codec = APPLE_IMA4;
else if (0==strcmp(val,"ATRAC3")) txth->codec = ATRAC3;
else if (0==strcmp(val,"ATRAC3PLUS")) txth->codec = ATRAC3PLUS;
else if (0==strcmp(val,"XMA1")) txth->codec = XMA1;
else if (0==strcmp(val,"XMA2")) txth->codec = XMA2;
else if (0==strcmp(val,"FFMPEG")) txth->codec = FFMPEG;
else goto fail;
}
else if (0==strcmp(key,"codec_mode")) {
if (!parse_num(streamFile,val, &txth->codec_mode)) goto fail;
}
else if (0==strcmp(key,"interleave")) {
if (!parse_num(streamFile,val, &txth->interleave)) goto fail;
}
else if (0==strcmp(key,"id_value")) {
if (!parse_num(streamFile,val, &txth->id_value)) goto fail;
}
else if (0==strcmp(key,"id_offset")) {
if (!parse_num(streamFile,val, &txth->id_offset)) goto fail;
if (txth->id_value != txth->id_offset) /* evaluate current ID */
goto fail;
}
else if (0==strcmp(key,"channels")) {
if (!parse_num(streamFile,val, &txth->channels)) goto fail;
}
else if (0==strcmp(key,"sample_rate")) {
if (!parse_num(streamFile,val, &txth->sample_rate)) goto fail;
}
else if (0==strcmp(key,"start_offset")) {
if (!parse_num(streamFile,val, &txth->start_offset)) goto fail;
if (!txth->data_size_set)
txth->data_size = get_streamfile_size(streamFile) - txth->start_offset; /* re-evaluate */
}
else if (0==strcmp(key,"data_size")) {
if (!parse_num(streamFile,val, &txth->data_size)) goto fail;
txth->data_size_set = 1;
}
else if (0==strcmp(key,"sample_type")) {
if (0==strcmp(val,"bytes")) txth->sample_type_bytes = 1;
else if (0==strcmp(val,"samples")) txth->sample_type_bytes = 0;
else goto fail;
}
else if (0==strcmp(key,"num_samples")) {
if (0==strcmp(val,"data_size")) {
txth->num_samples = get_bytes_to_samples(txth, txth->data_size);
}
else {
if (!parse_num(streamFile,val, &txth->num_samples)) goto fail;
if (txth->sample_type_bytes)
txth->num_samples = get_bytes_to_samples(txth, txth->num_samples);
}
}
else if (0==strcmp(key,"loop_start_sample")) {
if (!parse_num(streamFile,val, &txth->loop_start_sample)) goto fail;
if (txth->sample_type_bytes)
txth->loop_start_sample = get_bytes_to_samples(txth, txth->loop_start_sample);
if (txth->loop_adjust)
txth->loop_start_sample += txth->loop_adjust;
}
else if (0==strcmp(key,"loop_end_sample")) {
if (0==strcmp(val,"data_size")) {
txth->loop_end_sample = get_bytes_to_samples(txth, txth->data_size);
}
else {
if (!parse_num(streamFile,val, &txth->loop_end_sample)) goto fail;
if (txth->sample_type_bytes)
txth->loop_end_sample = get_bytes_to_samples(txth, txth->loop_end_sample);
}
if (txth->loop_adjust)
txth->loop_end_sample += txth->loop_adjust;
}
else if (0==strcmp(key,"skip_samples")) {
if (!parse_num(streamFile,val, &txth->skip_samples)) goto fail;
txth->skip_samples_set = 1;
if (txth->sample_type_bytes)
txth->skip_samples = get_bytes_to_samples(txth, txth->skip_samples);
}
else if (0==strcmp(key,"loop_adjust")) {
if (!parse_num(streamFile,val, &txth->loop_adjust)) goto fail;
if (txth->sample_type_bytes)
txth->loop_adjust = get_bytes_to_samples(txth, txth->loop_adjust);
}
else if (0==strcmp(key,"loop_flag")) {
if (!parse_num(streamFile,val, &txth->loop_flag)) goto fail;
txth->loop_flag_set = 1;
}
else if (0==strcmp(key,"coef_offset")) {
if (!parse_num(streamFile,val, &txth->coef_offset)) goto fail;
}
else if (0==strcmp(key,"coef_spacing")) {
if (!parse_num(streamFile,val, &txth->coef_spacing)) goto fail;
}
else if (0==strcmp(key,"coef_endianness")) {
if (val[0]=='B' && val[1]=='E')
txth->coef_big_endian = 1;
else if (val[0]=='L' && val[1]=='E')
txth->coef_big_endian = 0;
else if (!parse_num(streamFile,val, &txth->coef_big_endian)) goto fail;
}
else if (0==strcmp(key,"coef_mode")) {
if (!parse_num(streamFile,val, &txth->coef_mode)) goto fail;
}
else {
VGM_LOG("TXTH: unknown key=%s, val=%s\n", key,val);
goto fail;
}
return 1;
fail:
return 0;
}
static int parse_num(STREAMFILE * streamFile, const char * val, uint32_t * out_value) {
if (val[0] == '@') { /* offset */
uint32_t off = 0;
char ed1 = 'L', ed2 = 'E';
int size = 4;
int big_endian = 0;
int hex = (val[1]=='0' && val[2]=='x');
/* read exactly N fields in the expected format */
if (strchr(val,':') && strchr(val,'$')) {
if (sscanf(val, hex ? "@%x:%c%c$%i" : "@%u:%c%c$%i", &off, &ed1,&ed2, &size) != 4) goto fail;
} else if (strchr(val,':')) {
if (sscanf(val, hex ? "@%x:%c%c" : "@%u:%c%c", &off, &ed1,&ed2) != 3) goto fail;
} else if (strchr(val,'$')) {
if (sscanf(val, hex ? "@%x$%i" : "@%u$%i", &off, &size) != 2) goto fail;
} else {
if (sscanf(val, hex ? "@%x" : "@%u", &off) != 1) goto fail;
}
if (off < 0 || off > get_streamfile_size(streamFile))
goto fail;
if (ed1 == 'B' && ed2 == 'E')
big_endian = 1;
else if (!(ed1 == 'L' && ed2 == 'E'))
goto fail;
switch(size) {
case 1: *out_value = read_8bit(off,streamFile); break;
case 2: *out_value = big_endian ? (uint16_t)read_16bitBE(off,streamFile) : (uint16_t)read_16bitLE(off,streamFile); break;
case 3: *out_value = (big_endian ? (uint32_t)read_32bitBE(off,streamFile) : (uint32_t)read_32bitLE(off,streamFile)) & 0x00FFFFFF; break;
case 4: *out_value = big_endian ? (uint32_t)read_32bitBE(off,streamFile) : (uint32_t)read_32bitLE(off,streamFile); break;
default: goto fail;
}
}
else { /* constant */
int hex = (val[0]=='0' && val[1]=='x');
if (sscanf(val, hex ? "%x" : "%u", out_value)!=1) goto fail;
}
//VGM_LOG("TXTH: value=%s, read %u\n", val, *out_value);
return 1;
fail:
return 0;
}
static int get_bytes_to_samples(txth_header * txth, uint32_t bytes) {
switch(txth->codec) {
case MS_IMA:
return ms_ima_bytes_to_samples(bytes, txth->interleave, txth->channels);
case XBOX:
return ms_ima_bytes_to_samples(bytes, 0x24 * txth->channels, txth->channels);
case NGC_DSP:
return dsp_bytes_to_samples(bytes, txth->channels);
case PSX:
case PSX_bf:
return ps_bytes_to_samples(bytes, txth->channels);
case PCM16BE:
case PCM16LE:
return pcm_bytes_to_samples(bytes, txth->channels, 16);
case PCM8:
case PCM8_U_int:
case PCM8_U:
return pcm_bytes_to_samples(bytes, txth->channels, 8);
case MSADPCM:
return msadpcm_bytes_to_samples(bytes, txth->interleave, txth->channels);
case ATRAC3:
return atrac3_bytes_to_samples(bytes, txth->interleave);
case ATRAC3PLUS:
return atrac3plus_bytes_to_samples(bytes, txth->interleave);
/* XMA bytes-to-samples is done at the end as the value meanings are a bit different */
case XMA1:
case XMA2:
return bytes; /* preserve */
/* untested */
case IMA:
case DVI_IMA:
case SDX2:
return bytes;
case AICA:
return bytes * 2 / txth->channels;
case NGC_DTK:
return bytes / 32 * 28; /* always stereo? */
case APPLE_IMA4:
return (bytes / txth->interleave) * (txth->interleave - 2) * 2;
case MPEG: /* a bit complex */
case FFMPEG: /* too complex */
default:
return 0;
}
}
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