Cool_Tools/vgmstream
1
0
Fork 0
mirror of https://github.com/vgmstream/vgmstream.git synced 2025-01-29 19:37:30 +01:00
Code Issues Packages Projects Releases Wiki Activity

CRLF to LF

Browse Source
This commit is contained in:
bnnm 2020-03-07 23:04:10 +01:00
parent 443bc2db7c
commit 34b701693f
1 changed files with 29 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
src/coding/circus_decoder.c
View File

@ -1,29 +1,29 @@
#include "coding.h"
/* Circus XPCM mode 2 decoding, verified vs EF.exe (info from foo_adpcm/libpcm and https://github.com/lioncash/ExtractData) */
void decode_circus_adpcm(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
int i, sample_pos = 0;
int32_t hist = stream->adpcm_history1_32;
int scale = stream->adpcm_scale;
off_t frame_offset = stream->offset; /* frame size is 1 */
for (i = first_sample; i < first_sample + samples_to_do; i++) {
int8_t code = read_8bit(frame_offset+i,stream->streamfile);
hist += code << scale;
if (code == 0) {
if (scale > 0)
scale--;
}
else if (code == 127 || code == -128) {
if (scale < 8)
scale++;
}
outbuf[sample_pos] = hist;
}
stream->adpcm_history1_32 = hist;
stream->adpcm_scale = scale;
}
#include "coding.h"
/* Circus XPCM mode 2 decoding, verified vs EF.exe (info from foo_adpcm/libpcm and https://github.com/lioncash/ExtractData) */
void decode_circus_adpcm(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
int i, sample_pos = 0;
int32_t hist = stream->adpcm_history1_32;
int scale = stream->adpcm_scale;
off_t frame_offset = stream->offset; /* frame size is 1 */
for (i = first_sample; i < first_sample + samples_to_do; i++) {
int8_t code = read_8bit(frame_offset+i,stream->streamfile);
hist += code << scale;
if (code == 0) {
if (scale > 0)
scale--;
}
else if (code == 127 || code == -128) {
if (scale < 8)
scale++;
}
outbuf[sample_pos] = hist;
}
stream->adpcm_history1_32 = hist;
stream->adpcm_scale = scale;
}