mirror of
https://github.com/vgmstream/vgmstream.git
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71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* IAB: Ueki no Housoku - Taosu ze Robert Juudan!! (PS2) */
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VGMSTREAM * init_vgmstream_ps2_iab(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[PATH_LIMIT];
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int loop_flag = 0;
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int channel_count;
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int i;
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off_t start_offset;
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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("iab",filename_extension(filename))) goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFile) != 0x10000000)
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goto fail;
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/* check file size */
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if (read_32bitLE(0x1C,streamFile) != get_streamfile_size(streamFile))
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goto fail;
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loop_flag = 0;
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channel_count = 2;
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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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/* fill in the vital statistics */
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start_offset = 0x40;
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitLE(0x4,streamFile);
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vgmstream->coding_type = coding_PSX;
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vgmstream->layout_type = layout_ps2_iab_blocked;
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vgmstream->interleave_block_size = read_32bitLE(0xC, streamFile);
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vgmstream->meta_type = meta_PS2_IAB;
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/* open the file for reading by each channel */
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{
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for (i=0;i<channel_count;i++)
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{
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vgmstream->ch[i].streamfile = streamFile->open(streamFile, filename, vgmstream->interleave_block_size);
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if (!vgmstream->ch[i].streamfile) goto fail;
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}
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}
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/* Calc num_samples */
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ps2_iab_block_update(start_offset, vgmstream);
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vgmstream->num_samples=0;
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do
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{
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vgmstream->num_samples += 0x4000 * 14 / 16;
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ps2_iab_block_update(vgmstream->next_block_offset, vgmstream);
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} while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
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ps2_iab_block_update(start_offset, vgmstream);
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return vgmstream;
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/* clean up anything we may have opened */
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fail:
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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