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https://github.com/vgmstream/vgmstream.git
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79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
#include "meta.h"
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#include "../util.h"
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/* DSP
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Teenage Mutant Ninja Turtles 2 (NGC)
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*/
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VGMSTREAM * init_vgmstream_ngc_dsp_konami(STREAMFILE *streamFile) {
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VGMSTREAM * vgmstream = NULL;
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char filename[PATH_LIMIT];
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int loop_flag = 0;
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int channel_count;
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int i, j;
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off_t ch1_start;
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off_t ch2_start;
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off_t coef_table[2] = {0x90, 0xD0};
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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("dsp",filename_extension(filename)))
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goto fail;
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/* check header */
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if ((read_32bitBE(0x00,streamFile)+0x800) != (get_streamfile_size(streamFile)))
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goto fail;
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loop_flag = (read_32bitBE(0x10,streamFile) != 0x0);
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channel_count = 2;
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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(0x04,streamFile);
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vgmstream->coding_type = coding_NGC_DSP;
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vgmstream->num_samples = (read_32bitBE(0x00,streamFile)/channel_count/8*14);
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if (loop_flag) {
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vgmstream->loop_start_sample = (read_32bitBE(0x14,streamFile)/channel_count/8*14);
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vgmstream->loop_end_sample = (read_32bitBE(0x00,streamFile)/channel_count/8*14);
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}
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vgmstream->layout_type = layout_interleave;
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vgmstream->interleave_block_size = 0x100;
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vgmstream->meta_type = meta_NGC_DSP_KONAMI;
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ch1_start = 0x800;
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ch2_start = 0x800 + vgmstream->interleave_block_size;
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// COEFFS
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{
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for (j=0;j<vgmstream->channels;j++) {
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for (i=0;i<16;i++) {
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vgmstream->ch[j].adpcm_coef[i] = read_16bitBE(coef_table[j]+i*2,streamFile);
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}
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}
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}
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/* open the file for reading */
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/* Channel 1 */
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vgmstream->ch[0].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!vgmstream->ch[0].streamfile)
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goto fail;
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vgmstream->ch[0].channel_start_offset = vgmstream->ch[0].offset=ch1_start;
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/* Channel 1 */
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vgmstream->ch[1].streamfile = streamFile->open(streamFile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
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if (!vgmstream->ch[1].streamfile)
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goto fail;
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vgmstream->ch[1].channel_start_offset = vgmstream->ch[1].offset=ch2_start;
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return vgmstream;
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fail:
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/* clean up anything we may have opened */
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if (vgmstream) close_vgmstream(vgmstream);
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return NULL;
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}
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