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https://github.com/vgmstream/vgmstream.git
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50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
#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* sf) {
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VGMSTREAM* vgmstream = NULL;
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uint32_t start_offset, channel_size, loop_start;
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int loop_flag, channels;
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/* check extension */
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if (!check_extensions(sf, "smv"))
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goto fail;
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channel_size = read_u32le(0x00,sf);
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/* 0x08: number of full interleave blocks */
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channels = read_u16le(0x0a,sf);
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loop_start = read_u32le(0x18,sf);
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loop_flag = (loop_start != -1);
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start_offset = 0x800;
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if (channel_size * channels + start_offset != get_streamfile_size(sf))
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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(channels, loop_flag);
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if (!vgmstream) goto fail;
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vgmstream->sample_rate = read_s32le(0x10, sf);
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vgmstream->num_samples = ps_bytes_to_samples(channel_size, 1);
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vgmstream->loop_start_sample = ps_bytes_to_samples(loop_start, 1);
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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;
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vgmstream->interleave_block_size = read_u32le(0x04, sf);
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vgmstream->interleave_last_block_size = read_u32le(0x0c, sf);
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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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