mirror of
https://github.com/vgmstream/vgmstream.git
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113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
#include "meta.h"
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#include "../layout/layout.h"
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#include "../util.h"
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/* GSP+GSB - 2008-11-28 - manakoAT
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Super Swing Golf 1 & 2 (WII) */
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VGMSTREAM * init_vgmstream_gsp_gsb(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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STREAMFILE * streamFileGSP = NULL;
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char filename[PATH_LIMIT];
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char filenameGSP[PATH_LIMIT];
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int channel_count;
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int loop_flag;
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int header_len;
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int i;
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off_t coef1_start;
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off_t coef2_start;
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off_t start_offset;
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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("gsb",filename_extension(filename))) goto fail;
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strcpy(filenameGSP,filename);
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strcpy(filenameGSP+strlen(filenameGSP)-3,"gsp");
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streamFileGSP = streamFile->open(streamFile,filenameGSP,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!streamFileGSP) goto fail;
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/* check header */
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if (read_32bitBE(0x00,streamFileGSP) != 0x47534E44) /* "GSND" */
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goto fail;
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channel_count = (uint16_t)read_16bitBE(0x3A,streamFileGSP);
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loop_flag = (read_32bitBE(0x64,streamFileGSP) != 0xFFFFFFFF);
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header_len = read_32bitBE(0x1C,streamFileGSP);
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coef1_start = header_len-0x4C;
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coef2_start = header_len-0x1C;
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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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vgmstream->channels = channel_count;
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vgmstream->sample_rate = read_32bitBE(0x34,streamFileGSP);
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vgmstream->coding_type = coding_NGC_DSP;
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if(loop_flag) {
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vgmstream->loop_start_sample = read_32bitBE(0x64,streamFileGSP);
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vgmstream->loop_end_sample = read_32bitBE(0x68,streamFileGSP);
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}
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if (channel_count == 1) {
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vgmstream->layout_type = layout_gsb_blocked;
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} else if (channel_count > 1) {
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vgmstream->layout_type = layout_gsb_blocked;
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vgmstream->interleave_block_size = read_32bitBE(header_len-0x64,streamFileGSP);
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}
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vgmstream->meta_type = meta_GSP_GSB;
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/* open the file for reading by each channel */
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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,vgmstream->interleave_block_size);
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if (!vgmstream->ch[i].streamfile) goto fail;
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vgmstream->ch[i].channel_start_offset=
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vgmstream->ch[i].offset=i*vgmstream->interleave_block_size;
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}
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}
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if (vgmstream->coding_type == coding_NGC_DSP) {
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int i;
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for (i=0;i<16;i++) {
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vgmstream->ch[0].adpcm_coef[i] = read_16bitBE(coef1_start+i*2,streamFileGSP);
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}
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if (vgmstream->channels == 2) {
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for (i=0;i<16;i++) {
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vgmstream->ch[1].adpcm_coef[i] = read_16bitBE(coef2_start+i*2,streamFileGSP);
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}
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}
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}
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/* Calc num_samples */
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start_offset = 0x0;
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gsb_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*14/8;
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gsb_block_update(vgmstream->next_block_offset,vgmstream);
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} while (vgmstream->next_block_offset<get_streamfile_size(streamFile));
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gsb_block_update(start_offset,vgmstream);
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close_streamfile(streamFileGSP); streamFileGSP=NULL;
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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 (streamFileGSP) close_streamfile(streamFileGSP);
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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