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81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
#include "meta.h"
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#include "../util.h"
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/* PS2 SVAG (SNK)
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*
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* Found in SNK's World Heroes Anthology and Fatal Fury Battle Archives 2, maybe others
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* No relation with Konami's SVAG.
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*/
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VGMSTREAM * init_vgmstream_ps2_svag_snk(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 = 0x20;
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int loop_flag;
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int channel_count;
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int loop_start_block;
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int loop_end_block;
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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("svag",filename_extension(filename))) goto fail;
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/* check SNK SVAG Header ("VAGm") */
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if (read_32bitBE(0x00,streamFile) != 0x5641476D)
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goto fail;
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channel_count = read_32bitLE(0x0c,streamFile);
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loop_start_block = read_32bitLE(0x18,streamFile);
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loop_end_block = read_32bitLE(0x1c,streamFile);
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loop_flag = loop_end_block > 0; /* loop_start_block can be 0 */
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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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/* header data */
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vgmstream->coding_type = coding_PSX;
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vgmstream->meta_type = meta_PS2_SVAG_SNK;
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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitLE(0x08,streamFile);
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vgmstream->num_samples = read_32bitLE(0x10,streamFile) * 28; /* size in blocks */
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if( vgmstream->loop_flag ) {
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vgmstream->loop_start_sample = loop_start_block * 28;
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vgmstream->loop_end_sample = loop_end_block * 28;
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}
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x10;
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/* open the file for reading */
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{
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int i;
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STREAMFILE * file;
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file = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!file) goto fail;
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for (i=0;i<channel_count;i++) {
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vgmstream->ch[i].streamfile = file;
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vgmstream->ch[i].channel_start_offset =
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vgmstream->ch[i].offset =
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start_offset + vgmstream->interleave_block_size*i;
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}
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}
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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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