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