mirror of
https://github.com/vgmstream/vgmstream.git
synced 2024-12-13 23:31:05 +01:00
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
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#include "meta.h"
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#include "../util.h"
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/*
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...EMFF - Eidos Music File Format...
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*/
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VGMSTREAM * init_vgmstream_emff(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[260];
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off_t start_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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/* check extension, case insensitive */
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streamFile->get_name(streamFile,filename,sizeof(filename));
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if (strcasecmp("emff",filename_extension(filename))) goto fail;
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/* check header */
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#if 0
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if (read_32bitBE(0x00,streamFile) != 0x53565300) /* "SVS\0" */
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goto fail;
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#endif
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loop_flag = (read_32bitLE(0x04,streamFile) != 0xFFFFFFFF);
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channel_count = read_32bitLE(0x0C,streamFile);
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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 = 0x800;
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitLE(0x00,streamFile);
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vgmstream->coding_type = coding_PSX;
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/* vgmstream->num_samples = read_32bitLE(0x08,streamFile); */
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if (loop_flag) {
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vgmstream->loop_start_sample = loop_flag;
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vgmstream->loop_end_sample = read_32bitLE(0x08,streamFile);
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}
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vgmstream->layout_type = layout_emff_blocked;
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vgmstream->interleave_block_size = 0x10;
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vgmstream->meta_type = meta_EMFF;
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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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emff_block_update(start_offset,vgmstream);
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vgmstream->num_samples=0;
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do {
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vgmstream->num_samples += vgmstream->current_block_size*28/16/channel_count;
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emff_block_update(vgmstream->next_block_offset,vgmstream);
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} while (vgmstream->next_block_offset<get_streamfile_size(streamFile));
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emff_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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