mirror of
https://github.com/vgmstream/vgmstream.git
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69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* ivaud (from GTA IV (PC)) */
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VGMSTREAM * init_vgmstream_ivaud(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[PATH_LIMIT];
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off_t start_offset;
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off_t block_table_offset;
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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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/* at this time, i only check for extension */
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/* i'll make further checks later */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("ivaud",filename_extension(filename))) goto fail;
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/* multiple sounds .ivaud files are not implemented */
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/* only used for voices & sfx */
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if(read_32bitLE(0x10,streamFile)!=0)
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goto fail;
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/* never looped and allways 2 channels */
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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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block_table_offset = read_32bitLE(0,streamFile);
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitLE(block_table_offset + 0x04,streamFile);
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vgmstream->coding_type = coding_IMA_int;
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vgmstream->layout_type = layout_ivaud_blocked;
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vgmstream->meta_type = meta_PC_IVAUD;
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/* open the file for reading */
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{
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,0x2000);
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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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start_offset = read_32bitLE(0x2C,streamFile);
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//block_count = read_32bitLE(0x08,streamFile);
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vgmstream->next_block_offset = read_32bitLE(0x2C,streamFile);
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// to avoid troubles with "extra" samples
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vgmstream->num_samples=((read_32bitLE(0x60,streamFile)/2)*2);
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ivaud_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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