mirror of
https://github.com/vgmstream/vgmstream.git
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66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* CAF - from tri-Crescendo games [Baten Kaitos 1/2 (GC), Fragile (Wii)] */
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VGMSTREAM * init_vgmstream_caf(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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off_t start_offset, offset;
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size_t file_size;
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int channel_count, loop_flag;
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int32_t num_samples = 0;
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uint32_t loop_start = -1;
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/* checks */
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/* .caf: header id, .cfn: fake extension? , "" is accepted as files don't have extensions in the disc */
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if (!check_extensions(streamFile,"caf,cfn,"))
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goto fail;
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if (read_32bitBE(0x00,streamFile) != 0x43414620) /* "CAF " */
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goto fail;
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/* get total samples */
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offset = 0;
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file_size = get_streamfile_size(streamFile);
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while (offset < file_size) {
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off_t next_block = read_32bitBE(offset+0x04,streamFile);
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num_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_samples - read_32bitBE(offset+0x14,streamFile)/8*14;
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}
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offset += next_block;
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}
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start_offset = 0x00;
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channel_count = 2; /* always stereo */
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loop_flag = (loop_start!=-1);
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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->sample_rate = 32000;
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vgmstream->num_samples = num_samples;
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if (loop_flag) {
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vgmstream->loop_start_sample = loop_start;
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vgmstream->loop_end_sample = num_samples;
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}
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vgmstream->meta_type = meta_CAF;
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->layout_type = layout_blocked_caf;
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if ( !vgmstream_open_stream(vgmstream,streamFile,start_offset) )
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goto fail;
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block_update_caf(start_offset,vgmstream);
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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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