vgmstream/src/meta/hd3_bd3.c
2019-06-23 22:25:42 +02:00

116 lines
4.3 KiB
C

#include "meta.h"
#include "../coding/coding.h"
/* HD3+BD3 - Sony PS3 bank format [Elevator Action Deluxe (PS3), R-Type Dimensions (PS3)] */
VGMSTREAM * init_vgmstream_hd3_bd3(STREAMFILE *streamFile) {
VGMSTREAM * vgmstream = NULL;
STREAMFILE * streamHeader = NULL;
off_t start_offset;
int channel_count, loop_flag, sample_rate;
size_t interleave, stream_size;
int total_subsongs, target_subsong = streamFile->stream_index;
/* checks */
if (!check_extensions(streamFile, "bd3"))
goto fail;
streamHeader = open_streamfile_by_ext(streamFile,"hd3");
if (!streamHeader) goto fail;
if (read_32bitBE(0x00,streamHeader) != 0x50334844) /* "P3HD" */
goto fail;
/* 0x04: section size (not including first 0x08) */
/* 0x08: version? 0x00020000 */
/* 0x10: "P3PG" offset (seems mostly empty and contains number of subsongs towards the end) */
/* 0x14: "P3TN" offset (some kind of config?) */
/* 0x18: "P3VA" offset (VAG headers) */
{
off_t section_offset = read_32bitBE(0x18,streamHeader);
off_t header_offset;
size_t section_size;
int i, entries, is_bgm = 0;
if (read_32bitBE(section_offset+0x00,streamHeader) != 0x50335641) /* "P3VA" */
goto fail;
section_size = read_32bitBE(section_offset+0x04,streamHeader); /* (not including first 0x08) */
/* 0x08 always 0x10? */
entries = read_32bitBE(section_offset+0x14,streamHeader) + 1;
if (entries * 0x10 > section_size) /* just in case, padding after entries is possible */
goto fail;
/* autodetect use of N bank entries as channels [Elevator Action Deluxe (PS3)] */
if (entries > 1) {
size_t channel_size = read_32bitBE(section_offset+0x20+0x08,streamHeader);
is_bgm = 1;
for (i = 1; i < entries; i++) {
size_t next_size = read_32bitBE(section_offset+0x20+(i*0x10)+0x08,streamHeader);
if (channel_size != next_size) {
is_bgm = 0;
break;
}
}
}
if (is_bgm) {
total_subsongs = 1;
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
header_offset = section_offset+0x20+(0)*0x10;
start_offset = read_32bitBE(header_offset+0x00,streamHeader); /* 0x00 */
sample_rate = read_32bitBE(header_offset+0x04,streamHeader);
stream_size = get_streamfile_size(streamFile);
if (read_32bitBE(header_offset+0x0c,streamHeader) != -1)
goto fail;
channel_count = entries;
interleave = stream_size / channel_count;
}
else {
total_subsongs = entries;
if (target_subsong == 0) target_subsong = 1;
if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
header_offset = section_offset+0x20+(target_subsong-1)*0x10;
start_offset = read_32bitBE(header_offset+0x00,streamHeader);
sample_rate = read_32bitBE(header_offset+0x04,streamHeader);
stream_size = read_32bitBE(header_offset+0x08,streamHeader);
if (read_32bitBE(header_offset+0x0c,streamHeader) != -1)
goto fail;
channel_count = 1;
interleave = 0;
}
}
loop_flag = 0;
/* build the VGMSTREAM */
vgmstream = allocate_vgmstream(channel_count,loop_flag);
if (!vgmstream) goto fail;
vgmstream->sample_rate = sample_rate;
vgmstream->num_samples = ps_bytes_to_samples(stream_size, channel_count);
vgmstream->num_streams = total_subsongs;
vgmstream->stream_size = stream_size;
vgmstream->meta_type = meta_HD3_BD3;
vgmstream->coding_type = coding_PSX;
vgmstream->layout_type = (channel_count == 1) ? layout_none : layout_interleave;
vgmstream->interleave_block_size = interleave;
if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
goto fail;
close_streamfile(streamHeader);
return vgmstream;
fail:
close_streamfile(streamHeader);
close_vgmstream(vgmstream);
return NULL;
}