Cool_Tools/vgmstream
1
0
Fork 0
mirror of https://github.com/vgmstream/vgmstream.git synced 2024-12-14 07:32:52 +01:00
Code Issues Packages Projects Releases Wiki Activity
973c4bff1d
vgmstream/src/meta/ps3_sgh_sgb.c

326 lines
12 KiB
C
Raw Blame History

#include "meta.h"
#include "../util.h"
/* utils to fix AT3 looping */
typedef struct {
int32_t fact_samples;
int32_t loop_start_sample;
int32_t loop_end_sample;
int32_t skip_samples;
} at3_riff_info;
static int get_at3_riff_info(at3_riff_info* info, STREAMFILE *streamFile, int32_t offset);
/* Sony's SGB+SGH / SGD / SGX (variations of the same format)
* PS3: Genji (SGX only), Folklore, Afrika, Tokyo Jungle
* PSP: Brave Story, Sarugetchu Sarusaru Daisakusen, Kurohyo 1/2
*
* Contains header + chunks, usually:
* WAVE: stream(s) header of ADPCM, AC3, ATRAC3plus, etc
* NAME: stream name(s)
* WSUR, WMRK, BUSS: unknown
* RGND, SEQD: unknown (related to SE)
* Then data, containing the original header if applicable (ex. AT3 RIFF).
* The SGDX header has priority over it (ex. some ATRAC3plus files have 48000 while the data RIFF 44100)
*/
VGMSTREAM * init_vgmstream_ps3_sgdx(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
STREAMFILE * streamHeader = NULL;
char filename[PATH_LIMIT];
off_t start_offset, data_offset;
int i;
int is_sgx, is_sgd, is_sgb;
int chunk_offset;
int total_streams;
int target_stream = 0; /* usually only SE use substreams */
#ifdef VGM_USE_FFMPEG
ffmpeg_codec_data *ffmpeg_data = NULL;
#endif
/* check extension, case insensitive */
streamFile->get_name(streamFile,filename,sizeof(filename));
is_sgx = strcasecmp("sgx",filename_extension(filename))==0;
is_sgd = strcasecmp("sgd",filename_extension(filename))==0;
is_sgb = strcasecmp("sgb",filename_extension(filename))==0;
if ( !(is_sgx || is_sgd || is_sgb) )
goto fail;
/* SGB+SGH: use SGH as header; otherwise use the current file as header */
if (is_sgb) {
char fileheader[PATH_LIMIT];
strcpy(fileheader,filename);
strcpy(fileheader+strlen(fileheader)-3,"sgh");
streamHeader = streamFile->open(streamFile,fileheader,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!streamHeader) goto fail;
} else {
streamHeader = streamFile;
}
/* SGXD chunk (size 0x10) */
if (read_32bitBE(0x00,streamHeader) != 0x53475844) /* "SGXD" */
goto fail;
/* 0x04 SGX: full header_size; SGD/SGH: unknown header_size (counting from 0x0/0x8/0x10, varies) */
/* 0x08 SGX: first chunk offset? (0x10); SGD/SGH: full header_size */
/* 0x0c SGX/SGH: full data size with padding; SGD: full data size + 0x80000000 with padding */
if (is_sgb) {
data_offset = 0x00;
} else if ( is_sgx ) {
data_offset = read_32bitLE(0x04,streamHeader);
} else {
data_offset = read_32bitLE(0x08,streamHeader);
}
chunk_offset = 0x10;
/* WAVE chunk (size 0x10 + files * 0x38 + optional padding) */
/* the format reads chunks until header_size, but we only want WAVE in the first position meaning BGM */
if (read_32bitBE(chunk_offset+0x00,streamHeader) != 0x57415645) /* "WAVE" */
goto fail;
/* 0x04 SGX: unknown; SGD/SGH: chunk length */
/* 0x08 null */
/* usually only SE containers have multiple streams but just in case... */
total_streams = read_32bitLE(chunk_offset+0x0c,streamHeader);
if (target_stream+1 > total_streams)
goto fail;
/* read stream (skip until target_stream) */
chunk_offset += 0x10;
{
int stream_loop_flag;
int stream_type;
int stream_channels;
int32_t stream_sample_rate;
int32_t stream_num_samples, stream_loop_start_sample, stream_loop_end_sample;
off_t stream_start_offset;
int32_t stream_size;
for (i=0; i < total_streams; i++) {
if (i != target_stream) {
chunk_offset += 0x38; /* next file */
continue;
}
/* 0x00 ? (00/01/02) */
/* 0x04 sometimes global offset to wave_name */
stream_type = read_8bit(chunk_offset+0x08,streamHeader);
stream_channels = read_8bit(chunk_offset+0x09,streamHeader);
/* 0x0a null */
stream_sample_rate = read_32bitLE(chunk_offset+0x0c,streamHeader);
/* 0x10 info_type: meaning of the next value
* (00=null, 30/40=data size without padding (ADPCM, ATRAC3plus), 80/A0=block size (AC3) */
/* 0x14 info_value (see above) */
/* 0x18 unknown (ex. 0x0008/0010/3307/CC02/etc)x2 */
/* 0x1c null */
stream_num_samples = read_32bitLE(chunk_offset+0x20,streamHeader);
stream_loop_start_sample = read_32bitLE(chunk_offset+0x24,streamHeader);
stream_loop_end_sample = read_32bitLE(chunk_offset+0x28,streamHeader);
stream_size = read_32bitLE(chunk_offset+0x2c,streamHeader); /* stream size (without padding) / interleave (for type3) */
if (is_sgx) {
stream_start_offset = 0x0; /* TODO unknown (not seen multi SGX) */
} else{
stream_start_offset = read_32bitLE(chunk_offset+0x30,streamHeader);
}
/* 0x34 SGX: unknown; SGD/SGH: stream size (with padding) / interleave */
stream_loop_flag = stream_loop_start_sample!=0xffffffff && stream_loop_end_sample!=0xffffffff;
chunk_offset += 0x38; /* next file */
break;
}
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(stream_channels,stream_loop_flag);
if (!vgmstream) goto fail;
/* fill in the vital statistics */
vgmstream->num_samples = stream_num_samples;
vgmstream->sample_rate = stream_sample_rate;
vgmstream->channels = stream_channels;
if (stream_loop_flag) {
vgmstream->loop_start_sample = stream_loop_start_sample;
vgmstream->loop_end_sample = stream_loop_end_sample;
}
vgmstream->meta_type = meta_PS3_SGDX;
switch (stream_type) {
case 0x03: /* PSX ADPCM */
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = layout_interleave;
if (is_sgx) {
vgmstream->interleave_block_size = 0x10;
} else {
vgmstream->interleave_block_size = stream_size;
}
break;
#ifdef VGM_USE_FFMPEG
case 0x04: /* ATRAC3plus */
{
at3_riff_info info;
ffmpeg_data = init_ffmpeg_offset(streamFile, data_offset, streamFile->get_size(streamFile));
if ( !ffmpeg_data ) goto fail;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
/*vgmstream->meta_type = meta_FFmpeg;*/
vgmstream->codec_data = ffmpeg_data;
/* manually fix looping due to FFmpeg bugs */
if (stream_loop_flag && get_at3_riff_info(&info, streamFile, data_offset)) {
if (vgmstream->num_samples == info.fact_samples) { /* use if looks normal */
/* todo use "skip samples"; for now we just use absolute loop values */
vgmstream->loop_start_sample = info.loop_start_sample;
vgmstream->loop_end_sample = info.loop_end_sample;
vgmstream->num_samples += info.skip_samples; /* to ensure it always reaches loop_end */
}
}
break;
}
#endif
case 0x05: /* Short VAG ADPCM */
vgmstream->coding_type = coding_SHORT_VAG_ADPCM;
vgmstream->layout_type = layout_interleave;
vgmstream->interleave_block_size = 0x4;
break;
#ifdef VGM_USE_FFMPEG
case 0x06: /* AC3 */
ffmpeg_data = init_ffmpeg_offset(streamFile, data_offset, streamFile->get_size(streamFile));
if ( !ffmpeg_data ) goto fail;
vgmstream->coding_type = coding_FFmpeg;
vgmstream->layout_type = layout_none;
/*vgmstream->meta_type = meta_FFmpeg;*/
vgmstream->codec_data = ffmpeg_data;
break;
#endif
default:
goto fail;
}
start_offset = data_offset + stream_start_offset;
/* open the file for reading */
{
int i;
STREAMFILE * file;
file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
if (!file) goto fail;
for (i=0; i < vgmstream->channels; i++) {
vgmstream->ch[i].streamfile = file;
vgmstream->ch[i].channel_start_offset =
vgmstream->ch[i].offset =
start_offset + vgmstream->interleave_block_size * i;
}
}
}
return vgmstream;
fail:
#ifdef VGM_USE_FFMPEG
if (ffmpeg_data) {
free_ffmpeg(ffmpeg_data);
vgmstream->codec_data = NULL;
}
#endif
if (is_sgb && streamHeader) close_streamfile(streamHeader);
if (vgmstream) close_vgmstream(vgmstream);
return NULL;
}
/**
* AT3 RIFF headers have a "skip samples at the beginning" value that the decoder should use,
* and absolute loop values. However the SGDX header loop values assume those samples are skipped.
*
* FFmpeg doesn't support/export this, so we have to manually get the absolute values to fix looping.
*/
static int get_at3_riff_info(at3_riff_info* info, STREAMFILE *streamFile, int32_t offset) {
off_t current_chunk, riff_size;
int data_found = 0;
memset(info, 0, sizeof(at3_riff_info));
if (read_32bitBE(offset+0x0,streamFile)!=0x52494646 /* "RIFF" */
&& read_32bitBE(offset+0x8,streamFile)!=0x57415645 ) /* "WAVE" */
goto fail;
/* read chunks */
riff_size = read_32bitLE(offset+0x4,streamFile);
current_chunk = offset + 0xc;
while (!data_found && current_chunk < riff_size) {
uint32_t chunk_type = read_32bitBE(current_chunk,streamFile);
off_t chunk_size = read_32bitLE(current_chunk+4,streamFile);
switch(chunk_type) {
case 0x736D706C: /* smpl */
if (read_32bitLE(current_chunk+0x24, streamFile)==0
|| read_32bitLE(current_chunk+0x2c+0x4, streamFile)!=0 )
goto fail;
info->loop_start_sample = read_32bitLE(current_chunk+0x2c+0x8, streamFile);
info->loop_end_sample = read_32bitLE(current_chunk+0x2c+0xc,streamFile);
break;
case 0x66616374: /* fact */
if (chunk_size == 0x8) {
info->fact_samples = read_32bitLE(current_chunk+0x8, streamFile);
info->skip_samples = read_32bitLE(current_chunk+0xc, streamFile);
} else if (chunk_size == 0xc) {
info->fact_samples = read_32bitLE(current_chunk+0x8, streamFile);
info->skip_samples = read_32bitLE(current_chunk+0x10, streamFile);
} else {
goto fail;
}
break;
case 0x64617461: /* data */
data_found = 1;
break;
default:
break;
}
current_chunk += 8+chunk_size;
}
if (!data_found)
goto fail;
/* found */
return 1;
fail:
/* not found */
return 0;
}
Reference in New Issue View Git Blame Copy Permalink