mirror of
https://github.com/vgmstream/vgmstream.git
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79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
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#include "meta.h"
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#include "../util.h"
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extern caf_block_update(off_t block_offset, VGMSTREAM * vgmstream);
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VGMSTREAM * init_vgmstream_caf(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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// Calculate sample length ...
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int32_t num_of_samples=0;
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int32_t block_count=0;
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uint32_t loop_start=-1;
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off_t offset=0;
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off_t next_block;
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off_t file_length;
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int i;
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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("cfn",filename_extension(filename))) goto fail;
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/* Check "CAF " ID */
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if (read_32bitBE(0,streamFile)!=0x43414620) goto fail;
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// Calculate sample length ...
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file_length=(off_t)get_streamfile_size(streamFile);
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do {
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next_block=read_32bitBE(offset+0x04,streamFile);
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num_of_samples+=read_32bitBE(offset+0x14,streamFile)/8*14;
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if(read_32bitBE(offset+0x20,streamFile)==read_32bitBE(offset+0x08,streamFile)) {
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loop_start=num_of_samples-read_32bitBE(offset+0x14,streamFile)/8*14;
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}
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offset+=next_block;
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block_count++;
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} while(offset<file_length);
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/* build the VGMSTREAM */
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vgmstream = allocate_vgmstream(2,(loop_start!=-1)); /* always stereo */
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if (!vgmstream) goto fail;
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vgmstream->channels=2;
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vgmstream->sample_rate=32000;
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vgmstream->num_samples=num_of_samples;
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if(loop_start!=-1) {
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vgmstream->loop_start_sample=loop_start;
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vgmstream->loop_end_sample=num_of_samples;
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}
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_caf_blocked;
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vgmstream->meta_type = meta_CFN;
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/* open the file for reading by each channel */
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{
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for (i=0;i<2;i++) {
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vgmstream->ch[i].streamfile = streamFile->open(streamFile,filename,0x8000);
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if (!vgmstream->ch[i].streamfile) goto fail;
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}
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}
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caf_block_update(0,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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