mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-23 20:04:50 +01:00
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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#include "jstm_streamfile.h"
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/* JSTM - from Tantei Jinguji Saburo - Kind of Blue (PS2) */
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VGMSTREAM * init_vgmstream_jstm(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE *temp_streamFile = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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/* checks */
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/* .stm: original, .jstm: header id */
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if (!check_extensions(streamFile, "stm,jstm"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x4A53544D) /* "JSTM" */
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goto fail;
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start_offset = 0x20;
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channel_count = read_16bitLE(0x04,streamFile);
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if (channel_count != read_16bitLE(0x06,streamFile)) /* 0x02, interleave? */
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goto fail;
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loop_flag = (read_32bitLE(0x14,streamFile) != -1);
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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_32bitLE(0x08,streamFile);
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vgmstream->num_samples = pcm_bytes_to_samples(read_32bitLE(0x0C,streamFile),channel_count,16);
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if (loop_flag) {
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vgmstream->loop_start_sample = pcm_bytes_to_samples(read_32bitLE(0x14,streamFile),channel_count,16);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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}
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vgmstream->meta_type = meta_PS2_JSTM;
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x02;
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temp_streamFile = setup_jstm_streamfile(streamFile, start_offset);
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if (!temp_streamFile) goto fail;
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if (!vgmstream_open_stream(vgmstream,temp_streamFile,start_offset))
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goto fail;
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close_streamfile(temp_streamFile);
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return vgmstream;
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fail:
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close_streamfile(temp_streamFile);
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close_vgmstream(vgmstream);
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return NULL;
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}
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