77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* .PCM+SRE. - Capcom's header+data container thing [Viewtiful Joe (PS2)] */
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VGMSTREAM * init_vgmstream_pcm_sre(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 loop_flag, channel_count;
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size_t table1_entries, table2_entries;
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off_t table1_offset, table2_offset, header_offset;
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int total_subsongs, target_subsong = streamFile->stream_index;
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/* checks */
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/* .pcm=data, .sre=header */
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if (!check_extensions(streamFile, "pcm"))
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goto fail;
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/* first PS-ADPCM frame should be is null */
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if (read_32bitBE(0x00,streamFile) != 0x00020000 ||
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read_32bitBE(0x04,streamFile) != 0x00000000 ||
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read_32bitBE(0x08,streamFile) != 0x00000000 ||
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read_32bitBE(0x0c,streamFile) != 0x00000000)
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goto fail;
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streamHeader = open_streamfile_by_ext(streamFile, "sre");
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if (!streamHeader) goto fail;
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table1_entries = read_32bitLE(0x00, streamHeader);
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table1_offset = read_32bitLE(0x04, streamHeader);
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table2_entries = read_32bitLE(0x08, streamHeader);
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table2_offset = read_32bitLE(0x0c, streamHeader);
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if (table1_entries*0x60 + table1_offset != table2_offset)
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goto fail; /* just in case */
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total_subsongs = table2_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 = table2_offset + (target_subsong-1)*0x20;
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channel_count = read_32bitLE(header_offset+0x00,streamHeader);
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loop_flag = read_32bitLE(header_offset+0x18,streamHeader);
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start_offset = read_32bitLE(header_offset+0x08,streamHeader);
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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 = read_16bitLE(header_offset+0x04,streamHeader);
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vgmstream->meta_type = meta_PCM_SRE;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x1000;
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vgmstream->num_samples = ps_bytes_to_samples(read_32bitLE(header_offset+0x0c,streamHeader), channel_count);
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vgmstream->loop_start_sample = ps_bytes_to_samples(read_32bitLE(header_offset+0x10,streamHeader)*channel_count, channel_count);
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vgmstream->loop_end_sample = ps_bytes_to_samples(read_32bitLE(header_offset+0x14,streamHeader)*channel_count, channel_count);
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vgmstream->num_streams = total_subsongs;
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vgmstream->stream_size = read_32bitLE(header_offset+0x0c,streamHeader);
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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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