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https://github.com/vgmstream/vgmstream.git
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65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* S3V - from Konami arcade games [SOUND VOLTEX series (AC)] */
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VGMSTREAM * init_vgmstream_s3v(STREAMFILE *sf) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int32_t channel_count, loop_flag;
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size_t data_size;
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/* checks */
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if (!check_extensions(sf, "s3v"))
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goto fail;
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/* check header */
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if (read_32bitBE(0x00,sf) != 0x53335630) /* S3V0 */
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goto fail;
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/* No discernible loop_flag so we'll just use signatures.
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Might have to update on a per game basis. */
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switch (read_32bitBE(0x14, sf)) {
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case 0x82FA0000: // SOUND VOLTEX EXCEED GEAR ver5 Theme BGM
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case 0x1BFD0000: // SOUND VOLTEX EXCEED GEAR ver6 Theme BGM
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case 0x9AFD0000: // SOUND VOLTEX Custom song selection BGM TypeA
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case 0x9BFD0000: // SOUND VOLTEX Custom song selection BGM TypeB
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loop_flag = 1;
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break;
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default:
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loop_flag = 0;
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}
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start_offset = 0x20;
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data_size = read_32bitLE(0x08, sf);
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channel_count = 2;
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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->meta_type = meta_S3V;
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#ifdef VGM_USE_FFMPEG
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vgmstream->codec_data = init_ffmpeg_offset(sf, start_offset, data_size);
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if (!vgmstream->codec_data) goto fail;
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vgmstream->sample_rate = ffmpeg_get_sample_rate(vgmstream->codec_data);
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vgmstream->num_samples = ffmpeg_get_samples(vgmstream->codec_data);
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if (loop_flag) {
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vgmstream->loop_start_sample = read_32bitLE(0x10, sf);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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vgmstream->coding_type = coding_FFmpeg;
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vgmstream->layout_type = layout_none;
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#endif
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if (!vgmstream_open_stream(vgmstream, sf, start_offset))
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goto fail;
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return vgmstream;
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fail:
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close_vgmstream(vgmstream);
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return NULL;
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}
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