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vgmstream/src/meta/txth.c
bnnm c3a391dc0b Minor tweak in TXTH path handling
2024-07-14 21:17:02 +02:00

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#include "meta.h"
#include "../coding/coding.h"
#include "../layout/layout.h"
#include "txth_streamfile.h"
#include "../util/text_reader.h"
#include "../util/endianness.h"
#include "../util/paths.h"
#define TXT_LINE_MAX 2048 /* probably ~1000 would be ok */
#define TXT_LINE_KEY_MAX 128
#define TXT_LINE_VAL_MAX (TXT_LINE_MAX - TXT_LINE_KEY_MAX)
/* known TXTH types */
typedef enum {
PSX = 0, /* PS-ADPCM */
XBOX = 1, /* XBOX IMA ADPCM */
NGC_DTK = 2, /* NGC ADP/DTK ADPCM */
PCM16BE = 3, /* 16-bit big endian PCM */
PCM16LE = 4, /* 16-bit little endian PCM */
PCM8 = 5, /* 8-bit PCM */
SDX2 = 6, /* SDX2 (3D0 games) */
DVI_IMA = 7, /* DVI IMA ADPCM (high nibble first) */
MPEG = 8, /* MPEG (MP3) */
IMA = 9, /* IMA ADPCM (low nibble first) */
AICA = 10, /* YAMAHA AICA ADPCM (Dreamcast games) */
MSADPCM = 11, /* MS ADPCM (Windows games) */
NGC_DSP = 12, /* NGC DSP (Nintendo games) */
PSX_bf = 14, /* PS-ADPCM with bad flags */
MS_IMA = 15, /* Microsoft IMA ADPCM */
PCM8_U = 16, /* 8-bit 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 */
AC3 = 23, /* AC3/SPDIF */
PCFX = 24, /* PC-FX ADPCM */
PCM4 = 25, /* 4-bit signed PCM (3rd and 4th gen games) */
PCM4_U = 26, /* 4-bit unsigned PCM (3rd and 4th gen games) */
OKI16 = 27, /* OKI ADPCM with 16-bit output (unlike OKI/VOX/Dialogic ADPCM's 12-bit) */
AAC = 28, /* Advanced Audio Coding (raw without .mp4) */
TGC = 29, /* Tiger Game.com 4-bit ADPCM */
ASF = 30, /* Argonaut ASF 4-bit ADPCM */
EAXA = 31, /* Electronic Arts EA-XA 4-bit ADPCM v1 */
OKI4S = 32, /* OKI ADPCM with 16-bit output (unlike OKI/VOX/Dialogic ADPCM's 12-bit) */
PCM24LE = 33, /* 24-bit Little Endian PCM */
PCM24BE = 34, /* 24-bit Big Endian PCM */
XA,
XA_EA,
CP_YM,
PCM_FLOAT_LE,
IMA_HV,
PCM8_SB,
HEVAG,
YMZ,
ULAW,
ALAW,
DPCM_KCEJ,
UNKNOWN = 255,
} txth_codec_t;
typedef enum { DEFAULT, NEGATIVE, POSITIVE, INVERTED } txth_loop_t;
typedef struct {
txth_codec_t codec;
uint32_t codec_mode;
uint32_t value_mul;
uint32_t value_div;
uint32_t value_add;
uint32_t value_sub;
uint32_t id_value;
uint32_t id_check;
uint32_t interleave;
uint32_t interleave_last;
uint32_t interleave_first;
uint32_t interleave_first_skip;
uint32_t frame_size;
uint32_t channels;
uint32_t sample_rate;
uint32_t data_size;
int data_size_set;
uint32_t start_offset;
uint32_t next_offset;
uint32_t padding_size;
int sample_type;
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;
txth_loop_t loop_behavior;
int loop_flag_set;
int loop_flag_auto;
uint32_t coef_offset;
uint32_t coef_spacing;
uint32_t coef_big_endian;
uint32_t coef_mode;
int coef_table_set;
uint8_t coef_table[0x02*16 * 16]; /* reasonable max */
int hist_set;
uint32_t hist_offset;
uint32_t hist_spacing;
uint32_t hist_big_endian;
int num_samples_data_size;
int target_subsong;
uint32_t subsong_count;
uint32_t subsong_spacing;
uint32_t subsong_sum;
uint32_t name_offset_set;
uint32_t name_offset;
uint32_t name_size;
int subfile_set;
uint32_t subfile_offset;
uint32_t subfile_size;
char subfile_extension[16];
uint32_t chunk_number;
uint32_t chunk_start;
uint32_t chunk_size;
uint32_t chunk_count;
uint32_t chunk_header_size;
uint32_t chunk_data_size;
uint32_t chunk_value;
uint32_t chunk_bsize_offset;
uint32_t chunk_dsize_offset;
uint32_t chunk_big_endian;
int chunk_start_set;
int chunk_size_set;
int chunk_count_set;
int chunk_bsize_set;
int chunk_dsize_set;
uint32_t base_offset;
uint32_t is_offset_absolute;
uint32_t name_values[16];
int name_values_count;
int is_multi_txth;
/* original STREAMFILE and its type (may be an unsupported "base" file or a .txth) */
STREAMFILE* sf;
int streamfile_is_txth;
/* configurable STREAMFILEs and if we opened it (thus must close it later) */
STREAMFILE* sf_text;
STREAMFILE* sf_head;
STREAMFILE* sf_body;
int sf_text_opened;
int sf_head_opened;
int sf_body_opened;
int debug;
} txth_header;
static VGMSTREAM* init_subfile(txth_header* txth);
static STREAMFILE* open_txth(STREAMFILE* sf);
static void clean_txth(txth_header* txth);
static int parse_txth(txth_header* txth);
/* 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* sf) {
VGMSTREAM* vgmstream = NULL;
txth_header txth = {0};
coding_t coding;
int i, j;
/* accept .txth (should set body_file or will fail later) */
if (check_extensions(sf, "txth")) {
txth.sf = sf;
txth.streamfile_is_txth = 1;
txth.sf_text = sf;
txth.sf_head = NULL;
txth.sf_body = NULL;
txth.sf_text_opened = 0;
txth.sf_head_opened = 0;
txth.sf_body_opened = 0;
}
else {
/* accept base file (no need for ID or ext checks --if a companion .TXTH exists all is good).
* player still needs to accept the streamfile's ext, so at worst rename to .vgmstream */
STREAMFILE* sf_text = open_txth(sf);
if (!sf_text) goto fail;
txth.sf = sf;
txth.streamfile_is_txth = 0;
txth.sf_text = sf_text;
txth.sf_head = sf;
txth.sf_body = sf;
txth.sf_text_opened = 1;
txth.sf_head_opened = 0;
txth.sf_body_opened = 0;
}
/* process the text file */
if (!parse_txth(&txth))
goto fail;
/* special case of parsing subfiles */
if (txth.subfile_set) {
VGMSTREAM* subfile_vgmstream = init_subfile(&txth);
clean_txth(&txth);
return subfile_vgmstream;
}
/* set common interleaves to simplify usage
* (maybe should ignore if manually overwritten, possibly with 0 on purpose?) */
if (txth.interleave == 0) {
uint32_t interleave = 0;
switch(txth.codec) {
case PSX:
case PSX_bf:
case HEVAG: interleave = 0x10; break;
case NGC_DSP: interleave = 0x08; break;
case PCM_FLOAT_LE: interleave = 0x04; break;
case PCM24LE: interleave = 0x03; break;
case PCM24BE: interleave = 0x03; break;
case PCM16LE:
case PCM16BE: interleave = 0x02; break;
case PCM8:
case PCM8_U:
case PCM8_SB:
case ULAW:
case ALAW:
default:
break;
}
txth.interleave = interleave;
}
/* type to coding conversion */
switch (txth.codec) {
case PSX: coding = coding_PSX; break;
case PSX_bf: coding = coding_PSX_badflags; break;
case HEVAG: coding = coding_HEVAG; break;
case XBOX: coding = coding_XBOX_IMA; break;
case NGC_DTK: coding = coding_NGC_DTK; break;
case PCM24LE: coding = coding_PCM24LE; break;
case PCM24BE: coding = coding_PCM24BE; break;
case PCM16LE: coding = coding_PCM16LE; break;
case PCM16BE: coding = coding_PCM16BE; break;
case PCM8: coding = coding_PCM8; break;
case PCM8_U: coding = coding_PCM8_U; break;
case PCM8_SB: coding = coding_PCM8_SB; break;
case ULAW: coding = coding_ULAW; break;
case ALAW: coding = coding_ALAW; break;
case DPCM_KCEJ: coding = coding_DPCM_KCEJ; break;
case PCM_FLOAT_LE: coding = coding_PCMFLOAT; break;
case SDX2: coding = coding_SDX2; break;
case DVI_IMA: coding = coding_DVI_IMA; break;
case IMA_HV: coding = coding_HV_IMA; break;
#ifdef VGM_USE_MPEG
case MPEG: coding = coding_MPEG_layer3; break; /* we later find out exactly which */
#endif
case IMA: coding = coding_IMA; break;
case YMZ:
case AICA: coding = coding_AICA; break;
case MSADPCM: coding = coding_MSADPCM; break;
case NGC_DSP: coding = coding_NGC_DSP; break;
case MS_IMA: coding = coding_MS_IMA; break;
case APPLE_IMA4: coding = coding_APPLE_IMA4; break;
#ifdef VGM_USE_FFMPEG
case ATRAC3:
case ATRAC3PLUS:
case XMA1:
case XMA2:
case AC3:
case AAC:
case FFMPEG: coding = coding_FFmpeg; break;
#endif
case PCFX: coding = coding_PCFX; break;
case PCM4: coding = coding_PCM4; break;
case PCM4_U: coding = coding_PCM4_U; break;
case OKI16: coding = coding_OKI16; break;
case OKI4S: coding = coding_OKI4S; break;
case TGC: coding = coding_TGC; break;
case ASF: coding = coding_ASF; break;
case EAXA: coding = coding_EA_XA; break;
case XA: coding = coding_XA; break;
case XA_EA: coding = coding_XA_EA; break;
case CP_YM: coding = coding_CP_YM; break;
default:
goto fail;
}
/* try to autodetect PS-ADPCM loop data */
if (txth.loop_flag_auto && coding == coding_PSX) {
txth.loop_flag = ps_find_loop_offsets(txth.sf_body, txth.start_offset, txth.data_size, txth.channels, txth.interleave,
(int32_t*)&txth.loop_start_sample, (int32_t*)&txth.loop_end_sample);
}
if (txth.debug) {
vgm_logi("TXTH: offset=%x, size=%x, coefs=%x + %x\n", txth.start_offset, txth.data_size, txth.coef_offset, txth.coef_spacing);
}
/* 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;
vgmstream->num_streams = txth.subsong_count;
vgmstream->stream_size = txth.data_size;
if (txth.name_offset_set) {
size_t name_size = txth.name_size ? txth.name_size + 1 : STREAM_NAME_SIZE;
read_string(vgmstream->stream_name,name_size, txth.name_offset,txth.sf_head);
}
/* codec specific (taken from GENH with minimal changes) */
switch (coding) {
case coding_PCM24LE:
case coding_PCM24BE:
case coding_PCM16LE:
case coding_PCM16BE:
case coding_PCM8:
case coding_PCM8_U:
case coding_PCM8_SB:
case coding_ULAW:
case coding_ALAW:
case coding_PCMFLOAT:
case coding_PCM4:
case coding_PCM4_U:
case coding_SDX2:
case coding_PSX:
case coding_PSX_badflags:
case coding_HEVAG:
case coding_DVI_IMA:
case coding_IMA:
case coding_HV_IMA:
case coding_AICA:
case coding_APPLE_IMA4:
case coding_TGC:
vgmstream->interleave_block_size = txth.interleave;
vgmstream->interleave_last_block_size = txth.interleave_last;
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;
if (coding == coding_AICA)
coding = coding_AICA_int;
}
/* to avoid endless loops */
if (!txth.interleave && (
coding == coding_PSX ||
coding == coding_PSX_badflags ||
coding == coding_HEVAG ||
coding == coding_IMA_int ||
coding == coding_DVI_IMA_int ||
coding == coding_SDX2_int ||
coding == coding_AICA_int) ) {
goto fail;
}
} else {
vgmstream->layout_type = layout_none;
}
/* to avoid problems with dual stereo files (_L+_R) for codecs with stereo modes */
if (coding == coding_AICA && txth.channels == 1)
coding = coding_AICA_int;
/* setup adpcm */
if (coding == coding_AICA || coding == coding_AICA_int) {
int ch;
for (ch = 0; ch < vgmstream->channels; ch++) {
vgmstream->ch[ch].adpcm_step_index = 0x7f;
}
}
if (coding == coding_PCM4 || coding == coding_PCM4_U) {
/* high nibble or low nibble first */
vgmstream->codec_config = txth.codec_mode;
}
if (txth.codec == YMZ) {
vgmstream->codec_config = 1; /* CONFIG_HIGH_NIBBLE */
}
//TODO recheck and use only for needed cases
vgmstream->allow_dual_stereo = 1; /* known to be used in: PSX, AICA, YMZ */
break;
case coding_DPCM_KCEJ:
if (vgmstream->channels == 1) goto fail; /* untested/unknown */
vgmstream->interleave_block_size = 0x01;
vgmstream->layout_type = layout_interleave;
break;
case coding_PCFX:
vgmstream->interleave_block_size = txth.interleave;
vgmstream->interleave_last_block_size = txth.interleave_last;
vgmstream->layout_type = layout_interleave;
if (txth.codec_mode >= 0 && txth.codec_mode <= 3)
vgmstream->codec_config = txth.codec_mode;
break;
case coding_OKI16:
case coding_OKI4S:
case coding_XA:
case coding_XA_EA:
case coding_CP_YM:
vgmstream->layout_type = layout_none;
break;
case coding_ASF:
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x11;
break;
case coding_EA_XA: /* from 'raw' modes in sx.exe [Harry Potter and the Chamber of Secrets (PC)] */
if (txth.codec_mode == 1) { /* mono interleave */
coding = coding_EA_XA_int;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = txth.interleave;
vgmstream->interleave_last_block_size = txth.interleave_last;
} else { /* mono/stereo */
if (vgmstream->channels > 2)
goto fail; /* only 1ch and 2ch are known */
vgmstream->layout_type = layout_none;
}
break;
case coding_MS_IMA:
if (txth.interleave && txth.frame_size) {
coding = coding_MS_IMA_mono;
vgmstream->frame_size = txth.frame_size;
vgmstream->interleave_block_size = txth.interleave;
vgmstream->layout_type = layout_interleave;
}
else {
vgmstream->frame_size = txth.frame_size ? txth.frame_size : txth.interleave;
vgmstream->layout_type = layout_none;
}
//TO-DO: needs to force MS_IMA_mono first if ch = 1, since dual_stereo + MS_IMA = assumes MS_IMA_stereo
// (or better do it after init / during setup stream)
//vgmstream->allow_dual_stereo = 1;
break;
case coding_MSADPCM:
if (vgmstream->channels > 2) goto fail; //can't handle (to-do: only non-mono?)
if (txth.interleave && txth.frame_size) {
coding = coding_MSADPCM_mono;
vgmstream->frame_size = txth.frame_size;
vgmstream->interleave_block_size = txth.interleave;
vgmstream->layout_type = layout_interleave;
}
else {
vgmstream->frame_size = txth.frame_size ? txth.frame_size : txth.interleave;
vgmstream->layout_type = layout_none;
}
break;
case coding_XBOX_IMA:
if (txth.codec_mode == 1) { /* mono interleave */
coding = coding_XBOX_IMA_mono;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = txth.interleave;
vgmstream->interleave_last_block_size = txth.interleave_last;
}
else { /* 1ch mono, or stereo interleave */
vgmstream->layout_type = txth.interleave ? layout_interleave : layout_none;
vgmstream->interleave_block_size = txth.interleave;
vgmstream->interleave_last_block_size = txth.interleave_last;
if (vgmstream->channels > 2 && vgmstream->channels % 2 != 0)
goto fail; /* only 2ch+..+2ch layout is known */
}
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_last_block_size = txth.interleave_last;
vgmstream->interleave_block_size = txth.interleave;
} else if (txth.channels > 1 && txth.codec_mode == 1) {
if (!txth.interleave) goto fail;
coding = coding_NGC_DSP_subint;
vgmstream->layout_type = layout_none;
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 */
{
read_s16_t read_s16 = txth.coef_big_endian ? read_s16be : read_s16le;
get_s16_t get_s16 =txth.coef_big_endian ? get_s16be : get_s16le;
for (i = 0; i < vgmstream->channels; i++) {
if (txth.coef_mode == 0) { /* normal coefs */
for (j = 0; j < 16; j++) {
int16_t coef;
if (txth.coef_table_set)
coef = get_s16(txth.coef_table + i*txth.coef_spacing + j*2);
else
coef = read_s16(txth.coef_offset + i*txth.coef_spacing + j*2, txth.sf_head);
vgmstream->ch[i].adpcm_coef[j] = coef;
}
}
else { /* split coefs (first all 8 positive, then all 8 negative [P.N.03 (GC), Viewtiful Joe (GC)] */
for (j = 0; j < 8; j++) {
vgmstream->ch[i].adpcm_coef[j*2+0] = read_s16(txth.coef_offset + i*txth.coef_spacing + j*2 + 0x00, txth.sf_head);
vgmstream->ch[i].adpcm_coef[j*2+1] = read_s16(txth.coef_offset + i*txth.coef_spacing + j*2 + 0x10, txth.sf_head);
}
}
}
}
/* get hist */
if (txth.hist_set) {
read_s16_t read_s16 = txth.coef_big_endian ? read_s16be : read_s16le;
for (i = 0; i < vgmstream->channels; i++) {
off_t offset = txth.hist_offset + i*txth.hist_spacing;
vgmstream->ch[i].adpcm_history1_16 = read_s16(offset + 0x00, txth.sf_head);
vgmstream->ch[i].adpcm_history2_16 = read_s16(offset + 0x02, txth.sf_head);
}
}
vgmstream->allow_dual_stereo = 1;
break;
#ifdef VGM_USE_MPEG
case coding_MPEG_layer3:
vgmstream->layout_type = layout_none;
vgmstream->codec_data = init_mpeg(txth.sf_body, 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 || txth.codec == AC3) {
/* default FFmpeg */
ffmpeg_data = init_ffmpeg_offset(txth.sf_body, txth.start_offset, txth.data_size);
if (!ffmpeg_data) goto fail;
if (vgmstream->num_samples == 0)
vgmstream->num_samples = ffmpeg_get_samples(ffmpeg_data); /* sometimes works */
}
else if (txth.codec == AAC) {
ffmpeg_data = init_ffmpeg_aac(txth.sf_body, txth.start_offset, txth.data_size, 0);
if (!ffmpeg_data) goto fail;
}
else if (txth.codec == ATRAC3) {
int block_align, encoder_delay;
block_align = txth.interleave;
encoder_delay = txth.skip_samples;
ffmpeg_data = init_ffmpeg_atrac3_raw(txth.sf_body, txth.start_offset,txth.data_size, vgmstream->num_samples,vgmstream->channels,vgmstream->sample_rate, block_align, encoder_delay);
if (!ffmpeg_data) goto fail;
}
else if (txth.codec == ATRAC3PLUS) {
int block_size = txth.interleave;
ffmpeg_data = init_ffmpeg_atrac3plus_raw(txth.sf_body, txth.start_offset, txth.data_size, vgmstream->num_samples, vgmstream->channels, vgmstream->sample_rate, block_size, txth.skip_samples);
if (!ffmpeg_data) goto fail;
}
else if (txth.codec == XMA1) {
int xma_stream_mode = txth.codec_mode == 1 ? 1 : 0;
ffmpeg_data = init_ffmpeg_xma1_raw(txth.sf_body, txth.start_offset, txth.data_size, vgmstream->channels, vgmstream->sample_rate, xma_stream_mode);
if (!ffmpeg_data) goto fail;
}
else if (txth.codec == XMA2) {
int block_size = txth.interleave;
ffmpeg_data = init_ffmpeg_xma2_raw(sf, txth.start_offset, txth.data_size, vgmstream->num_samples, vgmstream->channels, vgmstream->sample_rate, block_size, 0);
if (!ffmpeg_data) goto fail;
}
else {
goto fail;
}
vgmstream->codec_data = ffmpeg_data;
vgmstream->layout_type = layout_none;
if (txth.codec == XMA1 || txth.codec == XMA2) {
xma_fix_raw_samples(vgmstream, txth.sf_body, txth.start_offset,txth.data_size, 0, 0,0);
} else if (txth.skip_samples_set && txth.codec != ATRAC3 && txth.codec != ATRAC3PLUS) { /* force encoder delay */
ffmpeg_set_skip_samples(ffmpeg_data, txth.skip_samples);
}
break;
}
#endif
default:
break;
}
#ifdef VGM_USE_FFMPEG
if ((txth.sample_type==1 || txth.num_samples_data_size) && (txth.codec == XMA1 || txth.codec == XMA2)) {
/* manually find sample offsets */
ms_sample_data msd = {0};
msd.xma_version = 1;
msd.channels = txth.channels;
msd.data_offset = txth.start_offset;
msd.data_size = txth.data_size;
if (txth.sample_type==1) {
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, txth.sf_body);
vgmstream->num_samples = msd.num_samples;
if (txth.sample_type==1) {
vgmstream->loop_start_sample = msd.loop_start_sample;
vgmstream->loop_end_sample = msd.loop_end_sample;
}
}
#endif
if (vgmstream->interleave_block_size) {
if (txth.interleave_first_skip && !txth.interleave_first)
txth.interleave_first = txth.interleave;
if (txth.interleave_first > txth.interleave_first_skip)
txth.interleave_first -= txth.interleave_first_skip;
vgmstream->interleave_first_block_size = txth.interleave_first;
vgmstream->interleave_first_skip = txth.interleave_first_skip;
txth.start_offset += txth.interleave_first_skip;
}
vgmstream->coding_type = coding;
vgmstream->meta_type = meta_TXTH;
if (!vgmstream_open_stream(vgmstream, txth.sf_body, txth.start_offset))
goto fail;
clean_txth(&txth);
return vgmstream;
fail:
clean_txth(&txth);
close_vgmstream(vgmstream);
return NULL;
}
static VGMSTREAM* init_subfile(txth_header* txth) {
VGMSTREAM* vgmstream = NULL;
char extension[PATH_LIMIT];
STREAMFILE* sf_sub = NULL;
if (txth->subfile_size == 0) {
if (txth->data_size_set)
txth->subfile_size = txth->data_size;
else
txth->subfile_size = txth->data_size - txth->subfile_offset;
if (txth->subfile_size + txth->subfile_offset > get_streamfile_size(txth->sf_body))
txth->subfile_size = get_streamfile_size(txth->sf_body) - txth->subfile_offset;
}
if (txth->subfile_extension[0] == '\0')
get_streamfile_ext(txth->sf,txth->subfile_extension,sizeof(txth->subfile_extension));
/* must detect a potential infinite loop:
* - init_vgmstream enters TXTH and reads .txth
* - TXTH subfile calls init, nothing is detected
* - init_vgmstream enters TXTH and reads .txth
* - etc
* to avoid it we set a particular fake extension and detect it when reading .txth
*/
strcpy(extension, ".subfile_txth.");
strcat(extension, txth->subfile_extension);
sf_sub = setup_subfile_streamfile(txth->sf_body, txth->subfile_offset, txth->subfile_size, extension);
if (!sf_sub) goto fail;
sf_sub->stream_index = txth->sf->stream_index;
vgmstream = init_vgmstream_from_STREAMFILE(sf_sub);
if (!vgmstream) {
/* In case of subfiles with subsongs pass subsong N by default (ex. subfile is a .fsb with N subsongs).
* But if the subfile is a single-subsong subfile (ex. subfile is a .fsb with 1 subsong) try again
* without passing index (as it would fail first trying to open subsong N). */
if (sf_sub->stream_index > 1) {
sf_sub->stream_index = 0;
vgmstream = init_vgmstream_from_STREAMFILE(sf_sub);
if (!vgmstream) goto fail;
}
else {
goto fail;
}
}
/* apply some fields */
if (txth->sample_rate)
vgmstream->sample_rate = txth->sample_rate;
if (txth->num_samples)
vgmstream->num_samples = txth->num_samples;
/* load some fields for possible calcs */
if (!txth->channels)
txth->channels = vgmstream->channels;
if (!txth->sample_rate)
txth->sample_rate = vgmstream->sample_rate;
if (!txth->interleave)
txth->interleave = vgmstream->interleave_block_size;
if (!txth->interleave_last)
txth->interleave_last = vgmstream->interleave_last_block_size;
if (!txth->interleave_first)
txth->interleave_first = vgmstream->interleave_first_block_size;
if (!txth->interleave_first_skip)
txth->interleave_first_skip = vgmstream->interleave_first_skip;
//if (!txth->loop_flag) //?
// txth->loop_flag = vgmstream->loop_flag;
/* sometimes headers set loop start but getting loop_end before subfile init is hard */
if (!txth->loop_end_sample && txth->loop_flag)
txth->loop_end_sample = vgmstream->num_samples;
/* other init */
if (txth->loop_flag) {
vgmstream_force_loop(vgmstream, txth->loop_flag, txth->loop_start_sample, txth->loop_end_sample);
}
else if (txth->loop_flag_set && vgmstream->loop_flag) {
vgmstream_force_loop(vgmstream, 0, 0, 0);
}
/* assumes won't point to subfiles with subsongs */
if (/*txth->chunk_count &&*/ txth->subsong_count) {
vgmstream->num_streams = txth->subsong_count;
}
//todo: other combos with subsongs + subfile?
close_streamfile(sf_sub);
return vgmstream;
fail:
close_streamfile(sf_sub);
close_vgmstream(vgmstream);
return NULL;
}
static STREAMFILE* open_txth(STREAMFILE* sf) {
char filename[PATH_LIMIT];
const char* base_ext;
const char* txth_ext;
STREAMFILE* sf_text;
get_streamfile_name(sf, filename, sizeof(filename));
if (strstr(filename, ".subfile_txth") != NULL)
return NULL; /* detect special case of subfile-within-subfile */
base_ext = filename_extension(filename);
concatn(sizeof(filename), filename, ".txth");
txth_ext = filename_extension(filename);
/* try "(path/)(name.ext).txth" */
{
/* full filename, already prepared */
sf_text = open_streamfile(sf, filename);
if (sf_text) return sf_text;
}
/* try "(path/)(.ext).txth" */
if (base_ext) {
base_ext--; //get_streamfile_path(sf, filename, sizeof(filename));
sf_text = open_streamfile_by_filename(sf, base_ext);
if (sf_text) return sf_text;
}
/* try "(path/).txth" */
if (txth_ext) {
txth_ext--; /* points to "txth" due to the concat */
sf_text = open_streamfile_by_filename(sf, txth_ext);
if (sf_text) return sf_text;
}
/* not found */
return NULL;
}
static void clean_txth(txth_header* txth) {
/* close stuff manually opened during parse */
if (txth->sf_text_opened) close_streamfile(txth->sf_text);
if (txth->sf_head_opened) close_streamfile(txth->sf_head);
if (txth->sf_body_opened) close_streamfile(txth->sf_body);
}
/* ****************************************************************** */
static void set_body_chunk(txth_header* txth) {
STREAMFILE* temp_sf = NULL;
/* sets body "chunk" if all needed values are set
* (done inline for padding/get_samples/etc calculators to work) */
//todo maybe should only be done once, or have some count to retrigger to simplify?
if (!txth->chunk_start_set || !txth->chunk_size_set || !txth->chunk_count_set)
return;
if (txth->chunk_size == 0 && !(txth->chunk_bsize_set || txth->chunk_dsize_set))
return;
if (txth->chunk_start > txth->data_size || txth->chunk_count == 0)
return;
if (!txth->sf_body)
return;
/* treat chunks as subsongs (less subsongs than chunks could be allowed to ignore some chunks but it's kinda odd) */
if (txth->subsong_count > 1 && txth->subsong_count == txth->chunk_count)
txth->chunk_number = txth->target_subsong;
if (txth->chunk_number == 0)
txth->chunk_number = 1;
if (txth->chunk_number > txth->chunk_count)
return;
{
txth_io_config_data cfg = {0};
cfg.chunk_number = txth->chunk_number - 1; /* 1-index to 0-index */
cfg.chunk_header_size = txth->chunk_header_size;
cfg.chunk_data_size = txth->chunk_data_size;
cfg.chunk_value = txth->chunk_value;
cfg.chunk_bsize_offset = txth->chunk_bsize_offset;
cfg.chunk_dsize_offset = txth->chunk_dsize_offset;
cfg.chunk_be = txth->chunk_big_endian;
cfg.chunk_bsize_set = txth->chunk_bsize_set;
cfg.chunk_dsize_set = txth->chunk_dsize_set;
cfg.chunk_start = txth->chunk_start;
cfg.chunk_size = txth->chunk_size;
cfg.chunk_count = txth->chunk_count;
temp_sf = setup_txth_streamfile(txth->sf_body, cfg, txth->sf_body_opened);
if (!temp_sf) return;
}
/* closing is handled by temp_sf */
//if (txth->sf_body_opened) {
// close_streamfile(txth->sf_body);
// txth->sf_body = NULL;
// txth->sf_body_opened = 0;
//}
txth->sf_body = temp_sf;
txth->sf_body_opened = 1;
/* cancel values once set, to avoid weirdness and possibly allow chunks-in-chunks? */
txth->chunk_start_set = 0;
txth->chunk_size_set = 0;
txth->chunk_count_set = 0;
/* re-apply */
if (!txth->data_size_set) {
txth->data_size = get_streamfile_size(txth->sf_body);
}
}
static int parse_keyval(STREAMFILE* sf, txth_header* txth, const char* key, char* val);
static int parse_num(STREAMFILE* sf, txth_header* txth, const char* val, uint32_t* out_value);
static int parse_string(STREAMFILE* sf, txth_header* txth, const char* val, char* str, int str_len);
static int parse_coef_table(STREAMFILE* sf, txth_header* txth, const char* val, uint8_t* out_value, size_t out_size);
static int parse_name_table(txth_header* txth, char* val);
static int parse_multi_txth(txth_header* txth, char* val);
static int is_string(const char* val, const char* cmp);
static int get_bytes_to_samples(txth_header* txth, uint32_t bytes);
static int get_padding_size(txth_header* txth, int discard_empty);
/* Simple text parser of "key = value" lines.
* The code is meh and error handling not exactly the best. */
static int parse_txth(txth_header* txth) {
uint32_t txt_offset;
/* setup txth defaults */
if (txth->sf_body)
txth->data_size = get_streamfile_size(txth->sf_body);
txth->target_subsong = txth->sf->stream_index;
if (txth->target_subsong == 0) txth->target_subsong = 1;
txt_offset = read_bom(txth->sf_text);
/* read lines */
{
text_reader_t tr;
uint8_t buf[TXT_LINE_MAX + 1];
char key[TXT_LINE_KEY_MAX];
char val[TXT_LINE_VAL_MAX];
int ok, line_len;
char* line;
if (!text_reader_init(&tr, buf, sizeof(buf), txth->sf_text, txt_offset, 0))
goto fail;
do {
line_len = text_reader_get_line(&tr, &line);
if (line_len < 0) goto fail; /* too big for buf (maybe not text)) */
if (line == NULL) /* EOF */
break;
if (line_len == 0) /* empty */
continue;
/* get key/val (ignores lead spaces, stops at space/comment/separator) */
ok = sscanf(line, " %[^ \t#=] = %[^\t#\r\n] ", key,val);
if (ok != 2) /* ignore line if no key=val (comment or garbage) */
continue;
if (!parse_keyval(txth->sf, txth, key, val)) /* read key/val */
goto fail;
} while (line_len >= 0);
}
if (!txth->loop_flag_set)
txth->loop_flag = txth->loop_end_sample && txth->loop_end_sample != 0xFFFFFFFF;
if (!txth->sf_body)
goto fail;
if (txth->data_size > get_streamfile_size(txth->sf_body) - txth->start_offset || txth->data_size <= 0)
txth->data_size = get_streamfile_size(txth->sf_body) - txth->start_offset;
return 1;
fail:
return 0;
}
static txth_codec_t parse_codec(txth_header* txth, const char* val) {
if (is_string(val,"PSX")) return PSX;
else if (is_string(val,"XBOX")) return XBOX;
else if (is_string(val,"NGC_DTK")) return NGC_DTK;
else if (is_string(val,"DTK")) return NGC_DTK;
else if (is_string(val,"PCM24BE")) return PCM24BE;
else if (is_string(val,"PCM24LE")) return PCM24LE;
else if (is_string(val,"PCM16BE")) return PCM16BE;
else if (is_string(val,"PCM16LE")) return PCM16LE;
else if (is_string(val,"PCM8")) return PCM8;
else if (is_string(val,"PCM8_U")) return PCM8_U;
else if (is_string(val,"PCM8_SB")) return PCM8_SB;
else if (is_string(val,"SDX2")) return SDX2;
else if (is_string(val,"DVI_IMA")) return DVI_IMA;
else if (is_string(val,"MPEG")) return MPEG;
else if (is_string(val,"IMA")) return IMA;
else if (is_string(val,"AICA")) return AICA;
else if (is_string(val,"YMZ")) return YMZ;
else if (is_string(val,"MSADPCM")) return MSADPCM;
else if (is_string(val,"NGC_DSP")) return NGC_DSP;
else if (is_string(val,"DSP")) return NGC_DSP;
else if (is_string(val,"PSX_bf")) return PSX_bf;
else if (is_string(val,"MS_IMA")) return MS_IMA;
else if (is_string(val,"APPLE_IMA4")) return APPLE_IMA4;
else if (is_string(val,"ATRAC3")) return ATRAC3;
else if (is_string(val,"ATRAC3PLUS")) return ATRAC3PLUS;
else if (is_string(val,"XMA1")) return XMA1;
else if (is_string(val,"XMA2")) return XMA2;
else if (is_string(val,"FFMPEG")) return FFMPEG;
else if (is_string(val,"AC3")) return AC3;
else if (is_string(val,"PCFX")) return PCFX;
else if (is_string(val,"PCM4")) return PCM4;
else if (is_string(val,"PCM4_U")) return PCM4_U;
else if (is_string(val,"OKI16")) return OKI16;
else if (is_string(val,"OKI4S")) return OKI4S;
else if (is_string(val,"AAC")) return AAC;
else if (is_string(val,"TGC")) return TGC;
else if (is_string(val,"GCOM_ADPCM")) return TGC;
else if (is_string(val,"ASF")) return ASF;
else if (is_string(val,"EAXA")) return EAXA;
else if (is_string(val,"XA")) return XA;
else if (is_string(val,"XA_EA")) return XA_EA;
else if (is_string(val,"CP_YM")) return CP_YM;
else if (is_string(val,"PCM_FLOAT_LE")) return PCM_FLOAT_LE;
else if (is_string(val,"IMA_HV")) return IMA_HV;
else if (is_string(val,"HEVAG")) return HEVAG;
else if (is_string(val,"ULAW")) return ULAW;
else if (is_string(val,"ALAW")) return ALAW;
else if (is_string(val,"DPCM_KCEJ")) return DPCM_KCEJ;
/* special handling */
else if (is_string(val,"name_value")) return txth->name_values[0];
else if (is_string(val,"name_value1")) return txth->name_values[0];
else if (is_string(val,"name_value2")) return txth->name_values[1];
else if (is_string(val,"name_value3")) return txth->name_values[2];
//todo rest (handle in function)
return UNKNOWN;
}
static int parse_endianness(txth_header* txth, const char* val, uint32_t* p_value, uint32_t* mode) {
if (is_string(val, "BE")) {
*p_value = 1;
if (mode) *mode = 0;
}
else if (is_string(val, "LE")) {
*p_value = 0;
if (mode) *mode = 0;
}
else if (is_string(val, "BE_split")) {
*p_value = 1;
if (mode) *mode = 1;
}
else if (is_string(val, "LE_split")) {
*p_value = 0;
if (mode) *mode = 1;
}
else {
if (!parse_num(txth->sf_head,txth,val, p_value))
goto fail;
}
return 1;
fail:
return 0;
}
static int is_absolute(const char* fn) {
return fn[0] == '/' || fn[0] == '\\' || fn[1] == ':';
}
static STREAMFILE* open_path_streamfile(STREAMFILE* sf, char* path) {
fix_dir_separators(path); /* clean paths */
/* absolute paths are detected for convenience, but since it's hard to unify all OSs
* and plugins, they aren't "officially" supported nor documented, thus may or may not work */
if (is_absolute(path))
return open_streamfile(sf, path); /* from path as is */
else
return open_streamfile_by_filename(sf, path); /* from current path */
}
static int parse_keyval(STREAMFILE* sf_, txth_header* txth, const char* key, char* val) {
if (txth->debug)
vgm_logi("TXTH: reading key=%s, val=%s\n", key, val);
/* CODEC */
if (is_string(key,"codec")) {
txth->codec = parse_codec(txth, val);
if (txth->codec == UNKNOWN)
goto fail;
}
else if (is_string(key,"codec_mode")) {
if (!parse_num(txth->sf_head,txth,val, &txth->codec_mode)) goto fail;
}
/* VALUE MODIFIERS */
else if (is_string(key,"value_mul") || is_string(key,"value_*")) {
if (!parse_num(txth->sf_head,txth,val, &txth->value_mul)) goto fail;
}
else if (is_string(key,"value_div") || is_string(key,"value_/")) {
if (!parse_num(txth->sf_head,txth,val, &txth->value_div)) goto fail;
}
else if (is_string(key,"value_add") || is_string(key,"value_+")) {
if (!parse_num(txth->sf_head,txth,val, &txth->value_add)) goto fail;
}
else if (is_string(key,"value_sub") || is_string(key,"value_-")) {
if (!parse_num(txth->sf_head,txth,val, &txth->value_sub)) goto fail;
}
/* ID VALUES */
else if (is_string(key,"id_value")) {
if (!parse_num(txth->sf_head,txth,val, &txth->id_value)) goto fail;
}
else if (is_string(key,"id_check") || is_string(key,"id_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->id_check)) goto fail;
if (txth->id_value != txth->id_check) /* evaluate current ID */
goto fail;
}
/* INTERLEAVE / FRAME SIZE */
else if (is_string(key,"interleave")) {
if (is_string(val,"half_size")) {
if (txth->channels == 0) goto fail;
txth->interleave = txth->data_size / txth->channels;
}
else {
if (!parse_num(txth->sf_head,txth,val, &txth->interleave)) goto fail;
}
}
else if (is_string(key,"interleave_last")) {
if (is_string(val,"auto")) {
if (txth->channels > 0 && txth->interleave > 0)
txth->interleave_last = (txth->data_size % (txth->interleave * txth->channels)) / txth->channels;
}
else {
if (!parse_num(txth->sf_head,txth,val, &txth->interleave_last)) goto fail;
}
}
else if (is_string(key,"interleave_first")) {
if (!parse_num(txth->sf_head,txth,val, &txth->interleave_first)) goto fail;
}
else if (is_string(key,"interleave_first_skip")) {
if (!parse_num(txth->sf_head,txth,val, &txth->interleave_first_skip)) goto fail;
/* apply */
if (!txth->data_size_set) {
int skip = txth->interleave_first_skip * txth->channels;
if (txth->data_size && txth->data_size > skip)
txth->data_size -= skip;
}
}
else if (is_string(key,"frame_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->frame_size)) goto fail;
}
/* BASE CONFIG */
else if (is_string(key,"channels")) {
if (!parse_num(txth->sf_head,txth,val, &txth->channels)) goto fail;
}
else if (is_string(key,"sample_rate")) {
if (!parse_num(txth->sf_head,txth,val, &txth->sample_rate)) goto fail;
}
/* DATA CONFIG */
else if (is_string(key,"start_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->start_offset)) goto fail;
/* apply */
if (!txth->data_size_set) {
//TODO: this doesn't work when using name_table + subsongs, since values are pre-read
/* with subsongs we want to clamp data_size from this subsong start to next subsong start */
txth->next_offset = txth->data_size;
if (txth->subsong_count > 1 && txth->target_subsong < txth->subsong_count) {
/* temp move to next start_offset and move back*/
txth->target_subsong++;
parse_num(txth->sf_head,txth,val, &txth->next_offset);
txth->target_subsong--;
if (txth->next_offset < txth->start_offset)
txth->next_offset = 0;
}
if (txth->data_size && txth->data_size > txth->next_offset && txth->next_offset)
txth->data_size = txth->next_offset;
if (txth->data_size && txth->data_size > txth->start_offset)
txth->data_size -= txth->start_offset;
}
}
else if (is_string(key,"padding_size")) {
if (is_string(val,"auto")) {
txth->padding_size = get_padding_size(txth, 0);
}
else if (is_string(val,"auto-empty")) {
txth->padding_size = get_padding_size(txth, 1);
}
else {
if (!parse_num(txth->sf_head,txth,val, &txth->padding_size)) goto fail;
}
/* apply */
if (!txth->data_size_set) {
if (txth->data_size && txth->data_size > txth->padding_size)
txth->data_size -= txth->padding_size;
}
}
else if (is_string(key,"data_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->data_size)) goto fail;
txth->data_size_set = 1;
}
/* SAMPLES */
else if (is_string(key,"sample_type")) {
if (is_string(val,"samples")) txth->sample_type = 0;
else if (is_string(val,"bytes")) txth->sample_type = 1;
else if (is_string(val,"blocks")) txth->sample_type = 2;
else goto fail;
}
else if (is_string(key,"num_samples")) {
if (is_string(val,"data_size")) {
txth->num_samples = get_bytes_to_samples(txth, txth->data_size);
txth->num_samples_data_size = 1;
}
else {
if (!parse_num(txth->sf_head,txth,val, &txth->num_samples)) goto fail;
if (txth->sample_type==1)
txth->num_samples = get_bytes_to_samples(txth, txth->num_samples);
if (txth->sample_type==2)
txth->num_samples = get_bytes_to_samples(txth, txth->num_samples * (txth->interleave*txth->channels));
}
}
else if (is_string(key,"loop_start_sample") || is_string(key,"loop_start")) {
if (!parse_num(txth->sf_head,txth,val, &txth->loop_start_sample)) goto fail;
if (txth->sample_type==1)
txth->loop_start_sample = get_bytes_to_samples(txth, txth->loop_start_sample);
if (txth->sample_type==2)
txth->loop_start_sample = get_bytes_to_samples(txth, txth->loop_start_sample * (txth->interleave*txth->channels));
if (txth->loop_adjust)
txth->loop_start_sample += txth->loop_adjust;
}
else if (is_string(key,"loop_end_sample") || is_string(key,"loop_end")) {
if (is_string(val,"data_size")) {
txth->loop_end_sample = get_bytes_to_samples(txth, txth->data_size);
}
else {
if (!parse_num(txth->sf_head,txth,val, &txth->loop_end_sample)) goto fail;
if (txth->sample_type==1)
txth->loop_end_sample = get_bytes_to_samples(txth, txth->loop_end_sample);
if (txth->sample_type==2)
txth->loop_end_sample = get_bytes_to_samples(txth, txth->loop_end_sample * (txth->interleave*txth->channels));
}
if (txth->loop_adjust)
txth->loop_end_sample += txth->loop_adjust;
}
else if (is_string(key,"skip_samples")) {
if (!parse_num(txth->sf_head,txth,val, &txth->skip_samples)) goto fail;
txth->skip_samples_set = 1;
if (txth->sample_type==1)
txth->skip_samples = get_bytes_to_samples(txth, txth->skip_samples);
if (txth->sample_type==2)
txth->skip_samples = get_bytes_to_samples(txth, txth->skip_samples * (txth->interleave*txth->channels));
}
else if (is_string(key,"loop_adjust")) {
if (!parse_num(txth->sf_head,txth,val, &txth->loop_adjust)) goto fail;
if (txth->sample_type==1)
txth->loop_adjust = get_bytes_to_samples(txth, txth->loop_adjust);
if (txth->sample_type==2)
txth->loop_adjust = get_bytes_to_samples(txth, txth->loop_adjust * (txth->interleave*txth->channels));
}
else if (is_string(key,"loop_flag")) {
if (is_string(val,"auto")) {
txth->loop_flag_auto = 1;
}
else {
if (!parse_num(txth->sf_head,txth,val, &txth->loop_flag)) goto fail;
txth->loop_flag_set = 1;
if (txth->loop_behavior == DEFAULT) {
if ((txth->loop_flag == 0xFFFF || txth->loop_flag == 0xFFFFFFFF) )
txth->loop_flag = 0;
}
else if (txth->loop_behavior == NEGATIVE) {
if (txth->loop_flag == 0xFF || txth->loop_flag == 0xFFFF || txth->loop_flag == 0xFFFFFFFF)
txth->loop_flag = 1;
}
else if (txth->loop_behavior == POSITIVE) {
if (txth->loop_flag == 0xFF || txth->loop_flag == 0xFFFF || txth->loop_flag == 0xFFFFFFFF)
txth->loop_flag = 0;
else if (txth->loop_flag == 0)
txth->loop_flag = 1;
}
else if (txth->loop_behavior == INVERTED) {
txth->loop_flag = (txth->loop_flag == 0);
}
}
}
else if (is_string(key,"loop_behavior")) {
if (is_string(val, "default"))
txth->loop_behavior = DEFAULT;
else if (is_string(val, "negative"))
txth->loop_behavior = NEGATIVE;
else if (is_string(val, "positive"))
txth->loop_behavior = POSITIVE;
else if (is_string(val, "inverted"))
txth->loop_behavior = INVERTED;
else
goto fail;
}
else if (is_string(key,"offset_absolute")) {
if (!parse_num(txth->sf_head,txth,val, &txth->is_offset_absolute)) goto fail;
}
/* COEFS */
else if (is_string(key,"coef_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->coef_offset)) goto fail;
/* special adjustments */
txth->coef_offset += txth->base_offset;
if (txth->subsong_spacing && !txth->is_offset_absolute)
txth->coef_offset += txth->subsong_spacing * (txth->target_subsong - 1);
}
else if (is_string(key,"coef_spacing")) {
if (!parse_num(txth->sf_head,txth,val, &txth->coef_spacing)) goto fail;
}
else if (is_string(key,"coef_endianness")) {
if (!parse_endianness(txth, val, &txth->coef_big_endian, &txth->coef_mode)) goto fail;
}
else if (is_string(key,"coef_table")) {
if (!parse_coef_table(txth->sf_head,txth,val, txth->coef_table, sizeof(txth->coef_table))) goto fail;
txth->coef_table_set = 1;
}
/* HIST */
else if (is_string(key,"hist_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->hist_offset)) goto fail;
txth->hist_set = 1;
/* special adjustment */
txth->hist_offset += txth->hist_offset;
if (txth->subsong_spacing && !txth->is_offset_absolute)
txth->hist_offset += txth->subsong_spacing * (txth->target_subsong - 1);
}
else if (is_string(key,"hist_spacing")) {
if (!parse_num(txth->sf_head,txth,val, &txth->hist_spacing)) goto fail;
}
else if (is_string(key,"hist_endianness")) {
if (!parse_endianness(txth, val, &txth->hist_big_endian, NULL)) goto fail;
}
/* SUBSONGS */
else if (is_string(key,"subsong_count")) {
if (!parse_num(txth->sf_head,txth,val, &txth->subsong_count)) goto fail;
}
else if (is_string(key,"subsong_spacing") || is_string(key,"subsong_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->subsong_spacing)) goto fail;
}
else if (is_string(key,"subsong_sum")) {
/* add all values up to current subsong (for example, to add all sizes to get current offset, so get start_offset)
* doesn't include current (that is, reading size from fist subsong doesn't add anything) */
int default_subsong = txth->target_subsong;
uint32_t subsong_sum = 0;
for (int i = 0; i < default_subsong - 1; i++) {
txth->target_subsong = i + 1;
if (!parse_num(txth->sf_head,txth,val, &subsong_sum)) goto fail;
txth->subsong_sum += subsong_sum;
}
txth->target_subsong = default_subsong;
}
else if (is_string(key,"name_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->name_offset)) goto fail;
txth->name_offset_set = 1;
/* special adjustment */
txth->name_offset += txth->base_offset;
if (txth->subsong_spacing && !txth->is_offset_absolute)
txth->name_offset += txth->subsong_spacing * (txth->target_subsong - 1);
}
else if (is_string(key,"name_offset_absolute")) { //TODO: remove
if (!parse_num(txth->sf_head,txth,val, &txth->name_offset)) goto fail;
txth->name_offset_set = 1;
/* special adjustment */
txth->name_offset += txth->base_offset;
/* unlike the above this is meant for reads that point to somewhere in the file, regardless subsong number */
}
else if (is_string(key,"name_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->name_size)) goto fail;
}
/* SUBFILES */
else if (is_string(key,"subfile_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->subfile_offset)) goto fail;
txth->subfile_set = 1;
}
else if (is_string(key,"subfile_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->subfile_size)) goto fail;
txth->subfile_set = 1;
}
else if (is_string(key,"subfile_extension")) {
if (!parse_string(txth->sf_head,txth,val, txth->subfile_extension, sizeof(txth->subfile_extension))) goto fail;
txth->subfile_set = 1;
}
/* HEADER/BODY CONFIG */
else if (is_string(key,"header_file")) {
/* first remove old head if needed */
if (txth->sf_head_opened) {
close_streamfile(txth->sf_head);
txth->sf_head = NULL;
txth->sf_head_opened = 0;
}
if (is_string(val,"null")) { /* reset */
if (!txth->streamfile_is_txth) {
txth->sf_head = txth->sf; /* base non-txth file */
}
else {
goto fail; /* .txth, nothing to fall back */
}
}
else if (val[0]=='*' && val[1]=='.') { /* basename + extension */
txth->sf_head = open_streamfile_by_ext(txth->sf, (val+2));
if (!txth->sf_head) goto fail;
txth->sf_head_opened = 1;
}
else { /* open file */
txth->sf_head = open_path_streamfile(txth->sf, val);
if (!txth->sf_head) goto fail;
txth->sf_head_opened = 1;
}
}
else if (is_string(key,"body_file")) {
/* first remove old body if needed */
if (txth->sf_body_opened) {
close_streamfile(txth->sf_body);
txth->sf_body = NULL;
txth->sf_body_opened = 0;
}
if (is_string(val,"null")) { /* reset */
if (!txth->streamfile_is_txth) {
txth->sf_body = txth->sf; /* base non-txth file */
}
else {
goto fail; /* .txth, nothing to fall back */
}
}
else if (val[0]=='*' && val[1]=='.') { /* basename + extension */
txth->sf_body = open_streamfile_by_ext(txth->sf, (val+2));
if (!txth->sf_body) goto fail;
txth->sf_body_opened = 1;
}
else { /* open file */
txth->sf_body = open_path_streamfile(txth->sf, val);
if (!txth->sf_body) goto fail;
txth->sf_body_opened = 1;
}
/* use body as header when opening a .txth directly to simplify things */
if (txth->streamfile_is_txth && !txth->sf_head_opened) {
txth->sf_head = txth->sf_body;
}
/* re-apply */
if (!txth->data_size_set) {
txth->data_size = get_streamfile_size(txth->sf_body);
/* maybe should be manually set again? */
if (txth->data_size && txth->data_size > txth->next_offset && txth->next_offset)
txth->data_size = txth->next_offset;
if (txth->data_size && txth->data_size > txth->start_offset)
txth->data_size -= txth->start_offset;
if (txth->data_size && txth->data_size > txth->padding_size)
txth->data_size -= txth->padding_size;
}
}
/* CHUNKS */
else if (is_string(key,"chunk_count")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_count)) goto fail;
txth->chunk_count_set = 1;
set_body_chunk(txth);
}
else if (is_string(key,"chunk_start")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_start)) goto fail;
txth->chunk_start_set = 1;
set_body_chunk(txth);
}
else if (is_string(key,"chunk_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_size)) goto fail;
txth->chunk_size_set = 1;
set_body_chunk(txth);
}
/* optional and should go before the above */
else if (is_string(key,"chunk_number")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_number)) goto fail;
}
else if (is_string(key,"chunk_header_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_header_size)) goto fail;
}
else if (is_string(key,"chunk_data_size")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_data_size)) goto fail;
}
else if (is_string(key,"chunk_value")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_value)) goto fail;
}
else if (is_string(key,"chunk_size_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_bsize_offset)) goto fail;
txth->chunk_size_set = 1;
txth->chunk_bsize_set = 1;
}
else if (is_string(key,"chunk_data_size_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->chunk_dsize_offset)) goto fail;
txth->chunk_size_set = 1;
txth->chunk_dsize_set = 1;
}
else if (is_string(key,"chunk_endianness")) {
if (!parse_endianness(txth, val, &txth->chunk_big_endian, NULL)) goto fail;
}
/* BASE OFFSET */
else if (is_string(key,"base_offset")) {
if (!parse_num(txth->sf_head,txth,val, &txth->base_offset)) goto fail;
}
/* NAME TABLE */
else if (is_string(key,"name_table")) {
if (!parse_name_table(txth,val)) goto fail;
}
/* MULTI TXTH */
else if (is_string(key,"multi_txth")) {
if (!parse_multi_txth(txth,val)) goto fail;
}
/* DEBUG */
else if (is_string(key,"debug")) {
txth->debug = 1;
}
/* DEFAULT */
else {
VGM_LOG("TXTH: unknown key=%s, val=%s\n", key,val);
goto fail;
}
//;VGM_LOG("TXTH: data_size=%x, start=%x, next=%x, padding=%x\n", txth->data_size, txth->start_offset, txth->next_offset, txth->padding_size);
return 1;
fail:
vgm_logi("TXTH: error parsing key=%s, val=%s\n", key, val);
return 0;
}
static int is_substring(const char* val, const char* cmp, int inline_field) {
char chr;
int len = strlen(cmp);
/* "val" must contain "cmp" entirely */
if (strncmp(val, cmp, len) != 0)
return 0;
chr = val[len];
/* "val" can end with math for inline fields (like interleave*0x10) */
if (inline_field && (chr == '+' || chr == '-' || chr == '*' || chr == '/' || chr == '&'))
return len;
/* otherwise "val" ends in space or eof (to tell "interleave" and "interleave_last" apart) */
if (chr != '\0' && chr != ' ')
return 0;
return len;
}
static int is_string(const char* val, const char* cmp) {
int len = is_substring(val, cmp, 0);
if (!len) return 0;
/* also test that after string there aren't other values
* (comments are already removed but trailing spaces are allowed) */
while (val[len] != '\0') {
if (val[len] != ' ')
return 0;
len++;
}
return len;
}
static int is_string_field(const char* val, const char* cmp) {
return is_substring(val, cmp, 1);
}
static uint16_t get_string_wchar(const char* val, int pos, int* csize) {
uint16_t wchar = 0;
if ((val[pos] & 0x80) && val[pos+1] != '\0') {
wchar = (((val[pos] << 8u) & 0xFF00) | (val[pos+1] & 0xFF));
//wchar = ((((uint16_t)val[pos] << 8u)) | ((uint16_t)val[pos+1]));
if (csize) *csize = 2;
if (wchar >= 0xc380 && wchar <= 0xc39f) /* ghetto lowercase for common letters */
wchar += 0x20;
} else {
wchar = val[pos];
if (csize) *csize = 1;
if (wchar >= 0x41 && wchar <= 0x5a)
wchar += 0x20;
if (wchar == '\\')
wchar = '/'; /* normalize paths */
}
return wchar;
}
static int is_string_match(const char* text, const char* pattern) {
int t_pos = 0, p_pos = 0, t_len = 0, p_len = 0;
int p_size, t_size;
uint16_t p_char, t_char;
//;VGM_LOG("TXTH: match '%s' vs '%s'\n", text,pattern);
/* compares 2 strings (case insensitive, to a point) allowing wildcards
* ex. for "test": match = "Test*", "*est", "*teSt","T*ES*T"; fail = "tst", "teest"
*
* does some bleh UTF-8 handling, consuming dual bytes if needed (codepages set char's eighth bit).
* as such it's slower than standard funcs, but it's not like we need it to be ultra fast.
*/
while (text[t_pos] != '\0' && pattern[p_pos] != '\0') {
//;VGM_LOG("TXTH: compare '%s' vs '%s'\n", (text+t_pos), (pattern+p_pos));
if (pattern[p_pos] == '*') {
/* consume text wchars until one matches next pattern char */
p_pos++;
p_char = get_string_wchar(pattern, p_pos, NULL); /* stop char, or null */
while(text[t_pos] != '\0') {
t_char = get_string_wchar(text, t_pos, &t_size);
//;VGM_LOG("TXTH: consume %i '%s'\n", t_size, (text+t_pos));
/* break from this wildcard (AKA possible match = stop consuming) only if:
* - rest of string has the same length (=could be a match)
* - there are more wildcards (=would consume other parts)
* otherwise current wildcard must keep consuming text (without this,
* sound_1_1.adx vs *_1.adx wouldn't match since the _ would stop too early)
*/
if (t_char == p_char) {
if (strchr(&pattern[p_pos], '*'))
break;
if (!t_len || !p_len) { /* lazy init helpful? */
t_len = strlen(text);
p_len = strlen(pattern);
}
//;VGM_LOG("TXTH: possible match '%s' vs '%s'\n", (text+t_pos), (pattern+p_pos));
/* not strcmp to allow case insensitive-ness, handled below */
if (t_len - t_pos == p_len - p_pos)
break;
}
t_pos += t_size;
}
}
else if (pattern[p_pos] == '?') {
/* skip next text wchar */
get_string_wchar(text, t_pos, &t_size);
p_pos++;
t_pos += t_size;
}
else { /* must match char 1:1 */
//;VGM_LOG("TXTH: test 1:1 '%s' vs '%s'\n", (text+t_pos), (pattern+p_pos));
t_char = get_string_wchar(text, t_pos, &t_size);
p_char = get_string_wchar(pattern, p_pos, &p_size);
if (p_char != t_char)
break;
t_pos += t_size;
p_pos += p_size;
}
}
//;VGM_LOG("TXTH: current '%s' vs '%s'\n", (text+t_pos), (pattern+p_pos));
//;VGM_LOG("TXTH: match '%s' vs '%s' = %s\n", text,pattern, (text[t_pos] == '\0' && pattern[p_pos] == '\0') ? "true" : "false");
/* either all chars consumed/matched and both pos point to null, or one didn't so string didn't match */
return text[t_pos] == '\0' && pattern[p_pos] == '\0';
}
static int parse_string(STREAMFILE* sf, txth_header* txth, const char* val, char* str, int str_len) {
int n = 0;
if (strlen(val) >= str_len)
return 0;
/* read string without trailing spaces */
if (sscanf(val, " %s%n[^ ]%n", str, &n, &n) != 1)
return 0;
return n;
}
static int parse_coef_table(STREAMFILE* sf, txth_header* txth, const char* val, uint8_t* out_value, size_t out_size) {
uint32_t byte;
int done = 0;
/* read 2 char pairs = 1 byte ('N' 'N' 'M' 'M' = 0xNN 0xMM )*/
while (val[0] != '\0') {
if (val[0] == ' ') {
val++;
continue;
}
if (val[0] == '0' && val[1] == 'x') /* allow "0x" before values */
val += 2;
if (sscanf(val, " %2x", &byte) != 1)
goto fail;
if (done + 1 >= out_size)
goto fail;
out_value[done] = (uint8_t)byte;
done++;
val += 2;
}
return 1;
fail:
return 0;
}
static void string_trim(char* str) {
int str_len = strlen(str);
int i;
for (i = str_len - 1; i >= 0; i--) {
if (str[i] != ' ')
break;
str[i] = '\0';
}
}
static int read_name_table_keyval(txth_header* txth, const char* line, char* key, char* val) {
int ok;
int subsong;
/* get key/val (ignores lead spaces, stops at space/comment/separator) */
//todo names with # and subsongs don't work
/* ignore comments (that aren't subsongs) */
if (line[0] == '#' && strchr(line,':') == NULL)
return 0;
/* try "(name): (val))" */
ok = sscanf(line, " %[^\t#:] : %[^\t#\r\n] ", key, val);
if (ok == 2) {
string_trim(key); /* otherwise includes end spaces before : */
//;VGM_LOG("TXTH: name %s get\n", key);
return 1;
}
/* try "(empty): (val))" */
key[0] = '\0';
ok = sscanf(line, " : %[^\t#\r\n] ", val);
if (ok == 1) {
//;VGM_LOG("TXTH: default get\n");
return 1;
}
/* try "(name)#subsong: (val))" */
ok = sscanf(line, " %[^\t#:]#%i : %[^\t#\r\n] ", key, &subsong, val);
if (ok == 3 && subsong == txth->target_subsong) {
//;VGM_LOG("TXTH: name %s + subsong %i get\n", key, subsong);
return 1;
}
/* try "(empty)#subsong: (val))" */
key[0] = '\0';
ok = sscanf(line, " #%i: %[^\t#\r\n] ", &subsong, val);
if (ok == 2 && subsong == txth->target_subsong) {
//;VGM_LOG("TXTH: default + subsong %i get\n", subsong);
return 1;
}
return 0;
}
static int parse_name_val(txth_header* txth, char* subval) {
int ok;
ok = parse_num(txth->sf_head, txth, subval, &txth->name_values[txth->name_values_count]);
if (!ok) {
/* in rare cases may set codec */
txth_codec_t codec = parse_codec(txth, subval);
if (codec == UNKNOWN)
goto fail;
txth->name_values[txth->name_values_count] = codec;
}
txth->name_values_count++;
if (txth->name_values_count >= 16) /* surely nobody needs that many */
goto fail;
return 1;
fail:
return 0;
}
static int parse_name_table(txth_header* txth, char* set_name) {
STREAMFILE* sf_names = NULL;
off_t txt_offset, file_size;
char fullname[PATH_LIMIT];
char filename[PATH_LIMIT];
char basename[PATH_LIMIT];
const char* table_name;
/* just in case */
if (!txth->sf_text || !txth->sf_body)
goto fail;
/* trim just in case */
string_trim(set_name);
if (is_string(set_name,"*"))
table_name = ".names.txt";
else
table_name = set_name;
/* open companion file near .txth */
sf_names = open_streamfile_by_filename(txth->sf_text, table_name);
if (!sf_names) goto fail;
get_streamfile_name(txth->sf_body, fullname, sizeof(filename));
get_streamfile_filename(txth->sf_body, filename, sizeof(filename));
get_streamfile_basename(txth->sf_body, basename, sizeof(basename));
//;VGM_LOG("TXTH: names full=%s, file=%s, base=%s\n", fullname, filename, basename);
txt_offset = read_bom(sf_names);
file_size = get_streamfile_size(sf_names);
/* in case of repeated name tables */
memset(txth->name_values, 0, sizeof(txth->name_values));
txth->name_values_count = 0;
/* read lines and find target filename, format is (filename): value1, ... valueN */
{
char line[TXT_LINE_MAX];
char key[TXT_LINE_MAX];
char val[TXT_LINE_MAX];
while (txt_offset < file_size) {
int ok, bytes_read, line_ok;
bytes_read = read_line(line, sizeof(line), txt_offset, sf_names, &line_ok);
if (!line_ok) goto fail;
//;VGM_LOG("TXTH: line=%s\n",line);
txt_offset += bytes_read;
if (!read_name_table_keyval(txth, line, key, val))
continue;
//;VGM_LOG("TXTH: compare name '%s'\n", key);
/* parse values if key (name) matches default ("") or filename with/without extension */
if (key[0]=='\0'
|| is_string_match(filename, key)
|| is_string_match(basename, key)
|| is_string_match(fullname, key)) {
int n;
char subval[TXT_LINE_MAX];
const char *current = val;
while (current[0] != '\0') {
ok = sscanf(current, " %[^\t#\r\n,]%n ", subval, &n);
if (ok != 1)
goto fail;
current += n;
if (current[0] == ',')
current++;
if (!parse_name_val(txth, subval))
goto fail;
}
//;VGM_LOG("TXTH: found name '%s'\n", key);
break; /* target found */
}
}
}
/* ignore if name is not actually found (values will return 0) */
close_streamfile(sf_names);
return 1;
fail:
close_streamfile(sf_names);
return 0;
}
static int parse_multi_txth(txth_header* txth, char* names) {
STREAMFILE* sf_text = NULL;
char name[PATH_LIMIT];
int n, ok;
/* temp save */
sf_text = txth->sf_text;
txth->sf_text = NULL;
/* to avoid potential infinite recursion plus stack overflows */
if (txth->is_multi_txth > 3)
goto fail;
txth->is_multi_txth++;
while (names[0] != '\0') {
STREAMFILE* sf_test = NULL;
int found;
ok = sscanf(names, " %[^\t#\r\n,]%n ", name, &n);
if (ok != 1)
goto fail;
//;VGM_LOG("TXTH: multi name %s\n", name);
sf_test = open_streamfile_by_filename(txth->sf, name);
if (!sf_test)
goto fail;
/* re-parse with current txth and hope */
txth->sf_text = sf_test;
found = parse_txth(txth);
close_streamfile(sf_test);
//todo may need to close header/body streamfiles?
if (found) {
//;VGM_LOG("TXTH: found valid multi txth %s\n", name);
break; /* found, otherwise keep trying */
}
names += n;
if (names[0] == ',')
names++;
}
txth->is_multi_txth--;
txth->sf_text = sf_text;
return 1;
fail:
txth->is_multi_txth--;
txth->sf_text = sf_text;
return 0;
}
static int parse_num(STREAMFILE* sf, txth_header* txth, const char* val, uint32_t* out_value) {
/* out_value can be these, save before modifying */
uint32_t value_mul = txth->value_mul;
uint32_t value_div = txth->value_div;
uint32_t value_add = txth->value_add;
uint32_t value_sub = txth->value_sub;
uint32_t subsong_spacing = txth->subsong_spacing;
char op = ' ';
int brackets = 0;
uint32_t result = 0;
//;VGM_LOG("TXTH: initial val '%s'\n", val);
/* read "val" format: @(offset) (op) (field) (op) (number) ... */
while (val[0] != '\0') {
uint32_t value = 0;
char type = val[0];
int value_read = 0;
int n = 0;
if (type == ' ') { /* ignore */
n = 1;
}
else if (type == '(') { /* bracket */
brackets++;
n = 1;
}
else if (type == ')') { /* bracket */
if (brackets == 0) goto fail;
brackets--;
n = 1;
}
else if (type == '+' || type == '-' || type == '/' || type == '*' || type == '&') { /* op */
op = type;
n = 1;
}
else if (type == '@') { /* offset */
uint32_t offset = 0;
char ed1 = 'L', ed2 = 'E';
int size = 4;
int big_endian = 0;
int hex = (val[1]=='0' && val[2]=='x');
/* can happen when loading .txth and not setting body/head */
if (!sf) {
VGM_LOG("TXTH: wrong header\n");
goto fail;
}
/* read exactly N fields in the expected format */
if (strchr(val,':') && strchr(val,'$')) {
if (sscanf(val, hex ? "@%x:%c%c$%i%n" : "@%u:%c%c$%i%n", &offset, &ed1,&ed2, &size, &n) != 4) goto fail;
} else if (strchr(val,':')) {
if (sscanf(val, hex ? "@%x:%c%c%n" : "@%u:%c%c%n", &offset, &ed1,&ed2, &n) != 3) goto fail;
} else if (strchr(val,'$')) {
if (sscanf(val, hex ? "@%x$%i%n" : "@%u$%i%n", &offset, &size, &n) != 2) goto fail;
} else {
if (sscanf(val, hex ? "@%x%n" : "@%u%n", &offset, &n) != 1) goto fail;
}
/* adjust offset */
offset += txth->base_offset;
if (/*offset < 0 ||*/ offset > get_streamfile_size(sf)) {
vgm_logi("TXTH: wrong offset over file size (%x + %x)\n", offset - txth->base_offset, txth->base_offset);
goto fail;
}
if (ed1 == 'B' && ed2 == 'E')
big_endian = 1;
else if (!(ed1 == 'L' && ed2 == 'E'))
goto fail;
if (subsong_spacing)
offset = offset + subsong_spacing * (txth->target_subsong - 1);
if (txth->debug)
vgm_logi("TXTH: use value at 0x%x (%s %ib)\n", offset, big_endian ? "BE" : "LE", size * 8);
switch(size) {
case 1: value = read_u8(offset,sf); break;
case 2: value = big_endian ? read_u16be(offset,sf) : read_u16le(offset,sf); break;
case 3: value = (big_endian ? read_u32be(offset,sf) : read_u32le(offset,sf)) & 0x00FFFFFF; break;
case 4: value = big_endian ? read_u32be(offset,sf) : read_u32le(offset,sf); break;
default: goto fail;
}
value_read = 1;
}
else if (type >= '0' && type <= '9') { /* unsigned constant */
int hex = (val[0]=='0' && val[1]=='x');
if (sscanf(val, hex ? "%x%n" : "%u%n", &value, &n) != 1)
goto fail;
value_read = 1;
if (txth->debug)
vgm_logi(hex ? "TXTH: use constant 0x%x\n" : "TXTH: use constant %i\n", value);
}
else { /* known field */
if ((n = is_string_field(val,"interleave"))) value = txth->interleave;
else if ((n = is_string_field(val,"interleave_last"))) value = txth->interleave_last;
else if ((n = is_string_field(val,"interleave_first"))) value = txth->interleave_first;
else if ((n = is_string_field(val,"interleave_first_skip")))value = txth->interleave_first_skip;
else if ((n = is_string_field(val,"frame_size"))) value = txth->frame_size;
else if ((n = is_string_field(val,"channels"))) value = txth->channels;
else if ((n = is_string_field(val,"sample_rate"))) value = txth->sample_rate;
else if ((n = is_string_field(val,"start_offset"))) value = txth->start_offset;
else if ((n = is_string_field(val,"data_size"))) value = txth->data_size;
else if ((n = is_string_field(val,"padding_size"))) value = txth->padding_size;
else if ((n = is_string_field(val,"num_samples"))) value = txth->num_samples;
else if ((n = is_string_field(val,"loop_start_sample"))) value = txth->loop_start_sample;
else if ((n = is_string_field(val,"loop_start"))) value = txth->loop_start_sample;
else if ((n = is_string_field(val,"loop_end_sample"))) value = txth->loop_end_sample;
else if ((n = is_string_field(val,"loop_end"))) value = txth->loop_end_sample;
else if ((n = is_string_field(val,"subsong"))) value = txth->target_subsong;
else if ((n = is_string_field(val,"subsong_count"))) value = txth->subsong_count;
else if ((n = is_string_field(val,"subsong_spacing"))) value = txth->subsong_spacing;
else if ((n = is_string_field(val,"subsong_offset"))) value = txth->subsong_spacing;
else if ((n = is_string_field(val,"subsong_sum"))) value = txth->subsong_sum;
else if ((n = is_string_field(val,"subfile_offset"))) value = txth->subfile_offset;
else if ((n = is_string_field(val,"subfile_size"))) value = txth->subfile_size;
else if ((n = is_string_field(val,"base_offset"))) value = txth->base_offset;
else if ((n = is_string_field(val,"coef_offset"))) value = txth->coef_offset;
else if ((n = is_string_field(val,"coef_spacing"))) value = txth->coef_spacing;
else if ((n = is_string_field(val,"hist_offset"))) value = txth->hist_offset;
else if ((n = is_string_field(val,"hist_spacing"))) value = txth->hist_spacing;
else if ((n = is_string_field(val,"chunk_count"))) value = txth->chunk_count;
else if ((n = is_string_field(val,"chunk_start"))) value = txth->chunk_start;
else if ((n = is_string_field(val,"chunk_size"))) value = txth->chunk_size;
else if ((n = is_string_field(val,"chunk_size_offset"))) value = txth->chunk_bsize_offset;
else if ((n = is_string_field(val,"chunk_data_size_offset")))value = txth->chunk_dsize_offset;
else if ((n = is_string_field(val,"chunk_number"))) value = txth->chunk_number;
else if ((n = is_string_field(val,"chunk_data_size"))) value = txth->chunk_data_size;
else if ((n = is_string_field(val,"chunk_header_size"))) value = txth->chunk_header_size;
//todo whatever, improve
else if ((n = is_string_field(val,"name_value"))) value = txth->name_values[0];
else if ((n = is_string_field(val,"name_value1"))) value = txth->name_values[0];
else if ((n = is_string_field(val,"name_value2"))) value = txth->name_values[1];
else if ((n = is_string_field(val,"name_value3"))) value = txth->name_values[2];
else if ((n = is_string_field(val,"name_value4"))) value = txth->name_values[3];
else if ((n = is_string_field(val,"name_value5"))) value = txth->name_values[4];
else if ((n = is_string_field(val,"name_value6"))) value = txth->name_values[5];
else if ((n = is_string_field(val,"name_value7"))) value = txth->name_values[6];
else if ((n = is_string_field(val,"name_value8"))) value = txth->name_values[7];
else if ((n = is_string_field(val,"name_value9"))) value = txth->name_values[8];
else if ((n = is_string_field(val,"name_value10"))) value = txth->name_values[9];
else if ((n = is_string_field(val,"name_value11"))) value = txth->name_values[10];
else if ((n = is_string_field(val,"name_value12"))) value = txth->name_values[11];
else if ((n = is_string_field(val,"name_value13"))) value = txth->name_values[12];
else if ((n = is_string_field(val,"name_value14"))) value = txth->name_values[13];
else if ((n = is_string_field(val,"name_value15"))) value = txth->name_values[14];
else if ((n = is_string_field(val,"name_value16"))) value = txth->name_values[15];
else goto fail;
value_read = 1;
if (txth->debug)
vgm_logi("TXTH: use field value 0x%x\n", value);
}
/* apply simple left-to-right math though, for now "(" ")" are counted and validated
* (could use good ol' shunting-yard algo but whatevs) */
if (value_read) {
//;VGM_ASSERT(op != ' ', "MIX: %i %c %i\n", result, op, value);
switch(op) {
case '+': value = result + value; break;
case '-': value = result - value; break;
case '*': value = result * value; break;
case '/': if (value == 0) goto fail; value = result / value; break;
case '&': value = result & value; break;
default: break;
}
op = ' '; /* consume */
result = value;
}
/* move to next field (if any) */
val += n;
//;VGM_LOG("TXTH: val='%s', n=%i, brackets=%i, result=0x%x\n", val, n, brackets, result);
}
/* unbalanced brackets */
if (brackets > 0)
goto fail;
/* global operators, but only if current value wasn't set to 0 right before */
if (value_mul && txth->value_mul)
result = result * value_mul;
if (value_div && txth->value_div)
result = result / value_div;
if (value_add && txth->value_add)
result = result + value_add;
if (value_sub && txth->value_sub)
result = result - value_sub;
*out_value = result;
if (txth->debug)
vgm_logi("TXTH: final value: %u (0x%x)\n", result, result);
return 1;
fail:
if (txth->debug)
vgm_logi("TXTH: error parsing num '%s'\n", val);
return 0;
}
static int get_bytes_to_samples(txth_header* txth, uint32_t bytes) {
switch(txth->codec) {
case MS_IMA:
if (txth->interleave && txth->frame_size) /* mono mode */ //TODO maybe some helper instead
return ms_ima_bytes_to_samples(bytes / txth->channels, txth->frame_size, 1);
return ms_ima_bytes_to_samples(bytes, txth->frame_size ? txth->frame_size : txth->interleave, txth->channels);
case XBOX:
return xbox_ima_bytes_to_samples(bytes, txth->channels);
case NGC_DSP:
return dsp_bytes_to_samples(bytes, txth->channels);
case PSX:
case PSX_bf:
case HEVAG:
return ps_bytes_to_samples(bytes, txth->channels);
case PCM24BE:
return pcm24_bytes_to_samples(bytes, txth->channels);
case PCM24LE:
return pcm24_bytes_to_samples(bytes, txth->channels);
case PCM16BE:
case PCM16LE:
return pcm16_bytes_to_samples(bytes, txth->channels);
case PCM8:
case PCM8_U:
case PCM8_SB:
case ULAW:
case ALAW:
case DPCM_KCEJ:
return pcm8_bytes_to_samples(bytes, txth->channels);
case PCM_FLOAT_LE:
return pcm_bytes_to_samples(bytes, txth->channels, 32);
case PCM4:
case PCM4_U:
case TGC:
return pcm_bytes_to_samples(bytes, txth->channels, 4);
case MSADPCM:
if (txth->interleave && txth->frame_size) /* mono mode */ //TODO some helper instead
return msadpcm_bytes_to_samples(bytes / txth->channels, txth->frame_size, 1);
return msadpcm_bytes_to_samples(bytes, txth->frame_size ? txth->frame_size : txth->interleave, txth->channels);
case ATRAC3:
return atrac3_bytes_to_samples(bytes, txth->frame_size ? txth->frame_size : txth->interleave);
case ATRAC3PLUS:
return atrac3plus_bytes_to_samples(bytes, txth->frame_size ? txth->frame_size : txth->interleave);
case AAC:
return aac_get_samples(txth->sf_body, txth->start_offset, bytes);
#ifdef VGM_USE_MPEG
case MPEG:
return mpeg_get_samples(txth->sf_body, txth->start_offset, bytes);
#endif
case AC3:
return ac3_bytes_to_samples(bytes, txth->frame_size ? txth->frame_size : txth->interleave, txth->channels);
case ASF:
return asf_bytes_to_samples(bytes, txth->channels);
case EAXA:
return ea_xa_bytes_to_samples(bytes, txth->channels);
case XA:
case XA_EA:
return xa_bytes_to_samples(bytes, txth->channels, 0, 0, 4);
/* XMA bytes-to-samples is done at the end as the value meanings are a bit different */
case XMA1:
case XMA2:
return bytes; /* preserve */
case IMA:
case DVI_IMA:
case IMA_HV:
return ima_bytes_to_samples(bytes, txth->channels);
case AICA:
case YMZ:
case CP_YM:
return yamaha_bytes_to_samples(bytes, txth->channels);
case PCFX:
case OKI16:
case OKI4S:
return oki_bytes_to_samples(bytes, txth->channels);
/* untested */
case SDX2:
return bytes;
case NGC_DTK:
return bytes / 0x20 * 28; /* always stereo */
case APPLE_IMA4:
if (!txth->interleave) return 0;
return (bytes / txth->interleave) * (txth->interleave - 2) * 2;
case FFMPEG: /* too complex, try after init */
default:
return 0;
}
}
static int get_padding_size(txth_header* txth, int discard_empty) {
if (txth->data_size == 0 || txth->channels == 0)
return 0;
switch(txth->codec) {
case PSX:
return ps_find_padding(txth->sf_body, txth->start_offset, txth->data_size, txth->channels, txth->interleave, discard_empty);
default:
return 0;
}
}
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