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https://github.com/vgmstream/vgmstream.git
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52 lines
2.1 KiB
C
52 lines
2.1 KiB
C
#include "meta.h"
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#include "../coding/coding.h"
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/* VDS/VDM - from Procyon Studio games [Grafitti Kingdom / Rakugaki Oukoku 2 (PS2), Tsukiyo ni Saraba (PS2)] */
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VGMSTREAM * init_vgmstream_ps2_vds_vdm(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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/* checks */
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if ( !check_extensions(streamFile,"vds,vdm"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x56445320 && /* "VDS " (music)*/
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read_32bitBE(0x00,streamFile) != 0x56444D20) /* "VDM " (voices) */
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goto fail;
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loop_flag = read_8bit(0x20,streamFile);
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channel_count = read_32bitLE(0x10,streamFile);
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start_offset = 0x800;
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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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/* 0x08: unknown, always 0x10 */
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vgmstream->sample_rate = read_32bitLE(0x0c,streamFile);
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/* when looping (or maybe when stereo) data_size at 0x04 is actually smaller than file_size,
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* sometimes cutting outros with loop disabled; doesn't affect looping though */
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if (!loop_flag)
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vgmstream->num_samples = ps_bytes_to_samples(read_32bitLE(0x04,streamFile), channel_count);
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else
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vgmstream->num_samples = ps_bytes_to_samples(get_streamfile_size(streamFile) - start_offset, channel_count);
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vgmstream->loop_start_sample = ps_bytes_to_samples(read_32bitLE(0x18,streamFile) - start_offset, channel_count);
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vgmstream->loop_end_sample = ps_bytes_to_samples(read_32bitLE(0x1c,streamFile) - start_offset, channel_count);
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/* 0x21: volume?, 0x22: pan?, 0x23: 02=VDS 04=VDM? 02/05=VDM in Tsukiyo ni Saraba? */
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vgmstream->meta_type = meta_PS2_VDS_VDM;
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = (channel_count == 1) ? layout_none : layout_interleave;
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vgmstream->interleave_block_size = read_32bitLE(0x14,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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