mirror of
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81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#include "meta.h"
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#include "../util.h"
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/**
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* Guerrilla's MSS
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*
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* Found in ShellShock Nam '67, Killzone (PS2)
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*/
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VGMSTREAM * init_vgmstream_ps2_mss(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, datasize, num_samples;
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int loop_flag = 0;
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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("mss",filename_extension(filename))) goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFile) != 0x4D435353) /* "MCSS" */
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goto fail;
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loop_flag = 0;
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channel_count = read_16bitLE(0x16,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(0x08,streamFile);
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vgmstream->channels = channel_count;
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datasize = read_32bitLE(0x0c,streamFile);
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vgmstream->sample_rate = read_32bitLE(0x10,streamFile);
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num_samples = read_32bitLE(0x1C,streamFile);
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vgmstream->coding_type = coding_PSX;
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if (num_samples * vgmstream->channels <= datasize)
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{
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num_samples = num_samples / 16 * 28;
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}
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vgmstream->num_samples = num_samples;
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if (channel_count == 1)
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{
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vgmstream->layout_type = layout_none;
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}
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else
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{
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = read_32bitLE(0x18,streamFile);
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}
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vgmstream->meta_type = meta_PS2_MSS;
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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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