mirror of
https://github.com/vgmstream/vgmstream.git
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51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* .SMV - from Cho Aniki Zero (PSP) */
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VGMSTREAM * init_vgmstream_smv(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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int loop_flag, channel_count;
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size_t channel_size, loop_start;
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/* check extension */
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if (!check_extensions(streamFile, "smv"))
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goto fail;
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channel_size = read_32bitLE(0x00,streamFile);
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/* 0x08: number of full interleave blocks */
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channel_count = read_16bitLE(0x0a,streamFile);
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loop_start = read_32bitLE(0x18,streamFile);
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loop_flag = (loop_start != -1);
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start_offset = 0x800;
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if (channel_size * channel_count + start_offset != get_streamfile_size(streamFile))
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goto fail;
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channel_size -= 0x10; /* last value has SPU end frame without flag 0x7 as it should */
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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(0x10, streamFile);
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vgmstream->num_samples = ps_bytes_to_samples(channel_size*channel_count, channel_count);
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vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start*channel_count, channel_count);
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vgmstream->loop_end_sample = vgmstream->num_samples;
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vgmstream->meta_type = meta_SMV;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_interleave_shortblock;
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vgmstream->interleave_block_size = read_32bitLE(0x04, streamFile);
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vgmstream->interleave_smallblock_size = read_32bitLE(0x0c, streamFile);
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if (!vgmstream_open_stream(vgmstream,streamFile,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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