mirror of
https://github.com/vgmstream/vgmstream.git
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8ee5f1b89d
git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@486 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
#include "coding.h"
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#include "../util.h"
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void decode_pcm16LE(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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outbuf[sample_count]=read_16bitLE(stream->offset+i*2,stream->streamfile);
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}
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}
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void decode_pcm16BE(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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outbuf[sample_count]=read_16bitBE(stream->offset+i*2,stream->streamfile);
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}
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}
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void decode_pcm8(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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outbuf[sample_count]=read_8bit(stream->offset+i,stream->streamfile)*0x100;
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}
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}
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void decode_pcm8_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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outbuf[sample_count]=read_8bit(stream->offset+i*channelspacing,stream->streamfile)*0x100;
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}
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}
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void decode_pcm8_sb_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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int16_t v = (uint8_t)read_8bit(stream->offset+i*channelspacing,stream->streamfile);
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if (v&0x80) v = 0-(v&0x7f);
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outbuf[sample_count] = v*0x100;
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}
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}
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void decode_pcm8_unsigned_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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int16_t v = (uint8_t)read_8bit(stream->offset+i*channelspacing,stream->streamfile);
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outbuf[sample_count] = v*0x100 - 0x8000;
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}
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}
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void decode_pcm16LE_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
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int i;
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int32_t sample_count;
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for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
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outbuf[sample_count]=read_16bitLE(stream->offset+i*2*channelspacing,stream->streamfile);
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}
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}
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