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-rw-r--r--Changelog1
-rw-r--r--doc/general.texi1
-rw-r--r--libavcodec/Makefile1
-rw-r--r--libavcodec/adpcm.c33
-rw-r--r--libavcodec/adpcm_data.c13
-rw-r--r--libavcodec/adpcm_data.h2
-rw-r--r--libavcodec/allcodecs.c1
-rw-r--r--libavcodec/codec_desc.c7
-rw-r--r--libavcodec/codec_id.h1
-rw-r--r--libavcodec/version.h2
10 files changed, 61 insertions, 1 deletions
diff --git a/Changelog b/Changelog
index f3f905dd2f..83b8a4a46e 100644
--- a/Changelog
+++ b/Changelog
@@ -62,6 +62,7 @@ version <next>:
- tmedian filter
- maskedthreshold filter
- Support for muxing pcm and pgs in m2ts
+- Cunning Developments ADPCM decoder
version 4.2:
diff --git a/doc/general.texi b/doc/general.texi
index 4adcc9e742..4aaf506e56 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -1102,6 +1102,7 @@ following image formats are supported:
@item ADPCM G.726 @tab X @tab X
@item ADPCM IMA AMV @tab @tab X
@tab Used in AMV files
+@item ADPCM IMA Cunning Developments @tab @tab X
@item ADPCM IMA Electronic Arts EACS @tab @tab X
@item ADPCM IMA Electronic Arts SEAD @tab @tab X
@item ADPCM IMA Funcom @tab @tab X
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 88944d9a3a..28076c2c83 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -843,6 +843,7 @@ OBJS-$(CONFIG_ADPCM_IMA_AMV_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_ALP_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_APC_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_APM_DECODER) += adpcm.o adpcm_data.o
+OBJS-$(CONFIG_ADPCM_IMA_CUNNING_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_DAT4_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_DK3_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_DK4_DECODER) += adpcm.o adpcm_data.o
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 9ea6a268eb..c6735a49c9 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -16,6 +16,7 @@
* Simon & Schuster Interactive ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
* Ubisoft ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
* High Voltage Software ALP decoder by Zane van Iperen (zane@zanevaniperen.com)
+ * Cunning Developments decoder by Zane van Iperen (zane@zanevaniperen.com)
*
* This file is part of FFmpeg.
*
@@ -109,6 +110,9 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
unsigned int max_channels = 2;
switch(avctx->codec->id) {
+ case AV_CODEC_ID_ADPCM_IMA_CUNNING:
+ max_channels = 1;
+ break;
case AV_CODEC_ID_ADPCM_DTK:
case AV_CODEC_ID_ADPCM_EA:
min_channels = 2;
@@ -325,6 +329,26 @@ static inline int16_t adpcm_ima_mtf_expand_nibble(ADPCMChannelStatus *c, int nib
return (int16_t)c->predictor;
}
+static inline int16_t adpcm_ima_cunning_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
+{
+ int step_index;
+ int predictor;
+ int step;
+
+ nibble = sign_extend(nibble & 0xF, 4);
+
+ step = ff_adpcm_ima_cunning_step_table[c->step_index];
+ step_index = c->step_index + ff_adpcm_ima_cunning_index_table[abs(nibble)];
+ step_index = av_clip(step_index, 0, 60);
+
+ predictor = c->predictor + step * nibble;
+
+ c->predictor = av_clip_int16(predictor);
+ c->step_index = step_index;
+
+ return c->predictor;
+}
+
static inline int16_t adpcm_ima_wav_expand_nibble(ADPCMChannelStatus *c, GetBitContext *gb, int bps)
{
int nibble, step_index, predictor, sign, delta, diff, step, shift;
@@ -713,6 +737,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
/* simple 4-bit adpcm */
case AV_CODEC_ID_ADPCM_CT:
case AV_CODEC_ID_ADPCM_IMA_APC:
+ case AV_CODEC_ID_ADPCM_IMA_CUNNING:
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
case AV_CODEC_ID_ADPCM_IMA_OKI:
case AV_CODEC_ID_ADPCM_IMA_WS:
@@ -1304,6 +1329,13 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
samples += avctx->channels;
}
break;
+ case AV_CODEC_ID_ADPCM_IMA_CUNNING:
+ for (n = 0; n < nb_samples / 2; n++) {
+ int v = bytestream2_get_byteu(&gb);
+ *samples++ = adpcm_ima_cunning_expand_nibble(&c->status[0], v & 0x0F);
+ *samples++ = adpcm_ima_cunning_expand_nibble(&c->status[0], v >> 4);
+ }
+ break;
case AV_CODEC_ID_ADPCM_IMA_OKI:
for (n = nb_samples >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
@@ -2053,6 +2085,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16p, adpcm_ea_xas,
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APM, sample_fmts_s16, adpcm_ima_apm, "ADPCM IMA Ubisoft APM");
+ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_CUNNING, sample_fmts_s16, adpcm_ima_cunning, "ADPCM IMA Cunning Developments");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DAT4, sample_fmts_s16, adpcm_ima_dat4, "ADPCM IMA Eurocom DAT4");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
diff --git a/libavcodec/adpcm_data.c b/libavcodec/adpcm_data.c
index 4cce0a5857..cb9d20948e 100644
--- a/libavcodec/adpcm_data.c
+++ b/libavcodec/adpcm_data.c
@@ -177,3 +177,16 @@ const int16_t ff_adpcm_mtaf_stepsize[32][16] = {
{ 424, 1273, 2121, 2970, 3819, 4668, 5516, 6365,
-424, -1273, -2121, -2970, -3819, -4668, -5516, -6365, },
};
+
+const int8_t ff_adpcm_ima_cunning_index_table[8] = {
+ -1, -1, -1, -1, 1, 2, 3, 4,
+};
+
+const int16_t ff_adpcm_ima_cunning_step_table[61] = {
+ 1, 1, 1, 1, 2, 2, 3, 3, 4, 5,
+ 6, 7, 8, 10, 12, 14, 16, 20, 24, 28,
+ 32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
+ 192, 224, 256, 320, 384, 448, 512, 640, 768, 896,
+ 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120,
+ 6144, 7168, 8192, 10240, 12288, 14336, 16384, 20480, 24576, 28672, 0
+};
diff --git a/libavcodec/adpcm_data.h b/libavcodec/adpcm_data.h
index 5a687131d8..fa8a03ee1f 100644
--- a/libavcodec/adpcm_data.h
+++ b/libavcodec/adpcm_data.h
@@ -42,5 +42,7 @@ extern const int16_t ff_adpcm_yamaha_indexscale[];
extern const int8_t ff_adpcm_yamaha_difflookup[];
extern const int16_t ff_adpcm_afc_coeffs[2][16];
extern const int16_t ff_adpcm_mtaf_stepsize[32][16];
+extern const int8_t ff_adpcm_ima_cunning_index_table[8];
+extern const int16_t ff_adpcm_ima_cunning_step_table[61];
#endif /* AVCODEC_ADPCM_DATA_H */
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index e7b29426db..54d40ebdbc 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -605,6 +605,7 @@ extern AVCodec ff_adpcm_ima_amv_decoder;
extern AVCodec ff_adpcm_ima_alp_decoder;
extern AVCodec ff_adpcm_ima_apc_decoder;
extern AVCodec ff_adpcm_ima_apm_decoder;
+extern AVCodec ff_adpcm_ima_cunning_decoder;
extern AVCodec ff_adpcm_ima_dat4_decoder;
extern AVCodec ff_adpcm_ima_dk3_decoder;
extern AVCodec ff_adpcm_ima_dk4_decoder;
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index a7049f93a4..93433b5a27 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -2348,6 +2348,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Capcom's MT Framework"),
.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
},
+ {
+ .id = AV_CODEC_ID_ADPCM_IMA_CUNNING,
+ .type = AVMEDIA_TYPE_AUDIO,
+ .name = "adpcm_ima_cunning",
+ .long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Cunning Developments"),
+ .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
+ },
/* AMR */
{
diff --git a/libavcodec/codec_id.h b/libavcodec/codec_id.h
index 0244af663d..e7d6e059db 100644
--- a/libavcodec/codec_id.h
+++ b/libavcodec/codec_id.h
@@ -382,6 +382,7 @@ enum AVCodecID {
AV_CODEC_ID_ADPCM_IMA_APM,
AV_CODEC_ID_ADPCM_IMA_ALP,
AV_CODEC_ID_ADPCM_IMA_MTF,
+ AV_CODEC_ID_ADPCM_IMA_CUNNING,
/* AMR */
AV_CODEC_ID_AMR_NB = 0x12000,
diff --git a/libavcodec/version.h b/libavcodec/version.h
index ad85fb15e5..3de16c884c 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -28,7 +28,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 58
-#define LIBAVCODEC_VERSION_MINOR 81
+#define LIBAVCODEC_VERSION_MINOR 82
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 03:59:50 +0000