mirror of
https://github.com/vgmstream/vgmstream.git
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80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
#include "meta.h"
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#include "../util.h"
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/* SND (Warriors of Might and Magic Heroes of M&M:Dragonbone Staff) */
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VGMSTREAM * init_vgmstream_ps2_snd(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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int loop_flag;
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int channel_count;
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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("snd",filename_extension(filename))) goto fail;
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/* check header */
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if (read_32bitBE(0x0,streamFile) !=0x53534e44) goto fail;
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/* Force Loop 0->end */
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loop_flag = 1;
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channel_count = read_16bitLE(0x0a,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 = read_32bitLE(0x04,streamFile)+8;
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vgmstream->sample_rate = (uint16_t)read_16bitLE(0xe,streamFile);
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if(read_8bit(0x08,streamFile)==1) {
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vgmstream->coding_type = coding_DVI_IMA_int;
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}
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else
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vgmstream->coding_type = coding_PCM16LE;
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vgmstream->num_samples = read_32bitLE(0x16,streamFile);
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vgmstream->interleave_block_size = (uint16_t)read_16bitLE(0x12,streamFile);
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if((get_streamfile_size(streamFile)-start_offset)%vgmstream->interleave_block_size)
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{
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/* not sure if this is right ... */
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vgmstream->layout_type = layout_interleave_shortblock;
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vgmstream->interleave_smallblock_size = ((get_streamfile_size(streamFile)-start_offset)%vgmstream->interleave_block_size)/vgmstream->channels;
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} else {
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vgmstream->layout_type = layout_interleave;
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}
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vgmstream->meta_type = meta_PS2_SND;
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if(loop_flag) {
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vgmstream->loop_start_sample=0;
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vgmstream->loop_end_sample=vgmstream->num_samples;
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}
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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=start_offset+
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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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