mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 15:21:04 +01:00
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* ISH+ISD - from various games [Chaos Field (GC), Pokemon XD - Gale of Darkness (GC)] */
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VGMSTREAM * init_vgmstream_ish_isd(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;
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/* checks */
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if (!check_extensions(streamFile, "isd"))
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goto fail;
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streamHeader = open_streamfile_by_ext(streamFile,"ish");
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if (!streamHeader) goto fail;
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if (read_32bitBE(0x00,streamHeader) != 0x495F5346) /* "I_SF" */
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goto fail;
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channel_count = read_32bitBE(0x14,streamHeader);
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loop_flag = (read_32bitBE(0x1C,streamHeader) != 0);
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start_offset = 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 = read_32bitBE(0x08,streamHeader);
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vgmstream->num_samples = read_32bitBE(0x0C,streamHeader);
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if (loop_flag) {
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vgmstream->loop_start_sample = read_32bitBE(0x20,streamHeader)*14 / 0x08 /channel_count;
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vgmstream->loop_end_sample = read_32bitBE(0x24,streamHeader)*14 / 0x08 / channel_count;
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}
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vgmstream->meta_type = meta_ISH_ISD;
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vgmstream->coding_type = coding_NGC_DSP;
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if (channel_count == 1) {
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vgmstream->layout_type = layout_none;
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} else {
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_32bitBE(0x18,streamHeader);
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}
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dsp_read_coefs_be(vgmstream,streamHeader,0x40,0x40);
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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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