mirror of
https://github.com/vgmstream/vgmstream.git
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53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
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#include "meta.h"
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#include "../coding/coding.h"
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/* VIS - from Konami games [AirForce Delta Strike (PS2) (PS2)] */
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VGMSTREAM * init_vgmstream_vis(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset;
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size_t data_size;
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int loop_flag, channel_count;
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/* checks */
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if ( !check_extensions(streamFile,"vis") )
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x56495341) /* "VISA" */
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goto fail;
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start_offset = 0x800;
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data_size = get_streamfile_size(streamFile) - start_offset;
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loop_flag = read_32bitLE(0x18,streamFile);
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channel_count = read_32bitLE(0x20,streamFile); /* assumed */
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/* 0x1c: always 0x10 */
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/* 0x24: always 0x01 */
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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->meta_type = meta_VIS;
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vgmstream->sample_rate = read_32bitLE(0x08,streamFile);
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vgmstream->num_samples = ps_bytes_to_samples(data_size,channel_count);
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vgmstream->loop_start_sample = ps_bytes_to_samples(read_32bitLE(0x0c,streamFile),channel_count);
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vgmstream->loop_end_sample = ps_bytes_to_samples(read_32bitLE(0x10,streamFile),channel_count);
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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_32bitLE(0x14,streamFile); /* usually 0x10 or 0x4000 */
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if (vgmstream->interleave_block_size)
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vgmstream->interleave_last_block_size =
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(data_size % (vgmstream->interleave_block_size*channel_count)) / channel_count;
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read_string(vgmstream->stream_name,0x10+1, 0x28,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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