[Ffmpeg-cvslog] CVS: ffmpeg/libavcodec adpcm.c, 1.32, 1.33 allcodecs.c, 1.129, 1.130 avcodec.h, 1.452, 1.453
Aurelien Jacobs CVS
aurel
Thu Feb 16 01:09:25 CET 2006
Update of /cvsroot/ffmpeg/ffmpeg/libavcodec
In directory mail:/var2/tmp/cvs-serv178/libavcodec
Modified Files:
adpcm.c allcodecs.c avcodec.h
Log Message:
add Creative 8 bits ADPCM schemes support
Index: adpcm.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/adpcm.c,v
retrieving revision 1.32
retrieving revision 1.33
diff -u -d -r1.32 -r1.33
--- adpcm.c 12 Jan 2006 22:43:14 -0000 1.32
+++ adpcm.c 16 Feb 2006 00:09:22 -0000 1.33
@@ -514,6 +514,34 @@
return (short)predictor;
}
+static inline short adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, char nibble, int size, int shift)
+{
+ int sign, delta, diff;
+
+ sign = nibble & (1<<(size-1));
+ delta = nibble & ((1<<(size-1))-1);
+ diff = delta << (7 + c->step + shift);
+
+ if (sign)
+ c->predictor -= diff;
+ else
+ c->predictor += diff;
+
+ /* clamp result */
+ if (c->predictor > 16256)
+ c->predictor = 16256;
+ else if (c->predictor < -16384)
+ c->predictor = -16384;
+
+ /* calculate new step */
+ if (delta >= (2*size - 3) && c->step < 3)
+ c->step++;
+ else if (delta == 0 && c->step > 0)
+ c->step--;
+
+ return (short) c->predictor;
+}
+
static inline short adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, unsigned char nibble)
{
if(!c->step) {
@@ -644,7 +672,7 @@
samples = data;
src = buf;
- st = avctx->channels == 2;
+ st = avctx->channels == 2 ? 1 : 0;
switch(avctx->codec->id) {
case CODEC_ID_ADPCM_IMA_QT:
@@ -973,6 +1001,48 @@
src++;
}
break;
+ case CODEC_ID_ADPCM_SBPRO_4:
+ case CODEC_ID_ADPCM_SBPRO_3:
+ case CODEC_ID_ADPCM_SBPRO_2:
+ if (!c->status[0].step_index) {
+ /* the first byte is a raw sample */
+ *samples++ = 128 * (*src++ - 0x80);
+ if (st)
+ *samples++ = 128 * (*src++ - 0x80);
+ c->status[0].step_index = 1;
+ }
+ if (avctx->codec->id == CODEC_ID_ADPCM_SBPRO_4) {
+ while (src < buf + buf_size) {
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
+ (src[0] >> 4) & 0x0F, 4, 0);
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
+ src[0] & 0x0F, 4, 0);
+ src++;
+ }
+ } else if (avctx->codec->id == CODEC_ID_ADPCM_SBPRO_3) {
+ while (src < buf + buf_size) {
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
+ (src[0] >> 5) & 0x07, 3, 0);
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
+ (src[0] >> 2) & 0x07, 3, 0);
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
+ src[0] & 0x03, 2, 0);
+ src++;
+ }
+ } else {
+ while (src < buf + buf_size) {
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
+ (src[0] >> 6) & 0x03, 2, 2);
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
+ (src[0] >> 4) & 0x03, 2, 2);
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
+ (src[0] >> 2) & 0x03, 2, 2);
+ *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
+ src[0] & 0x03, 2, 2);
+ src++;
+ }
+ }
+ break;
case CODEC_ID_ADPCM_SWF:
{
GetBitContext gb;
@@ -1117,5 +1187,8 @@
ADPCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
ADPCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
ADPCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
+ADPCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
+ADPCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
+ADPCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
#undef ADPCM_CODEC
Index: allcodecs.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/allcodecs.c,v
retrieving revision 1.129
retrieving revision 1.130
diff -u -d -r1.129 -r1.130
--- allcodecs.c 12 Feb 2006 08:53:29 -0000 1.129
+++ allcodecs.c 16 Feb 2006 00:09:22 -0000 1.130
@@ -593,6 +593,9 @@
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
+PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
+PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
+PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
#undef PCM_CODEC
/* subtitles */
Index: avcodec.h
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/avcodec.h,v
retrieving revision 1.452
retrieving revision 1.453
diff -u -d -r1.452 -r1.453
--- avcodec.h 13 Feb 2006 12:00:27 -0000 1.452
+++ avcodec.h 16 Feb 2006 00:09:22 -0000 1.453
@@ -21,8 +21,8 @@
#define AV_STRINGIFY(s) AV_TOSTRING(s)
#define AV_TOSTRING(s) #s
-#define LIBAVCODEC_VERSION_INT ((51<<16)+(5<<8)+0)
-#define LIBAVCODEC_VERSION 51.5.0
+#define LIBAVCODEC_VERSION_INT ((51<<16)+(6<<8)+0)
+#define LIBAVCODEC_VERSION 51.6.0
#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@@ -153,6 +153,9 @@
CODEC_ID_ADPCM_CT,
CODEC_ID_ADPCM_SWF,
CODEC_ID_ADPCM_YAMAHA,
+ CODEC_ID_ADPCM_SBPRO_4,
+ CODEC_ID_ADPCM_SBPRO_3,
+ CODEC_ID_ADPCM_SBPRO_2,
/* AMR */
CODEC_ID_AMR_NB= 0x12000,
@@ -2271,6 +2274,9 @@
PCM_CODEC(CODEC_ID_ADPCM_CT, adpcm_ct);
PCM_CODEC(CODEC_ID_ADPCM_SWF, adpcm_swf);
PCM_CODEC(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha);
+PCM_CODEC(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4);
+PCM_CODEC(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3);
+PCM_CODEC(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2);
#undef PCM_CODEC
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