[FFmpeg-cvslog] avcodec: add adpcm MTAF decoder
Paul B Mahol
git at videolan.org
Sat May 21 18:54:35 CEST 2016
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sun May 15 20:45:04 2016 +0200| [8c17eea46fea2e56f8a772f6e9658cc208c51d7a] | committer: Paul B Mahol
avcodec: add adpcm MTAF decoder
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8c17eea46fea2e56f8a772f6e9658cc208c51d7a
---
libavcodec/Makefile | 1 +
libavcodec/adpcm.c | 41 +++++++++++++++++++++++++++++
libavcodec/adpcm_data.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/adpcm_data.h | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/avcodec.h | 1 +
libavcodec/codec_desc.c | 7 +++++
libavcodec/utils.c | 2 ++
libavcodec/version.h | 2 +-
9 files changed, 122 insertions(+), 1 deletion(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 472e8f0..1d4aaba 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -707,6 +707,7 @@ OBJS-$(CONFIG_ADPCM_IMA_WAV_ENCODER) += adpcmenc.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_WS_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_MS_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_MS_ENCODER) += adpcmenc.o adpcm_data.o
+OBJS-$(CONFIG_ADPCM_MTAF_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_PSX_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_SBPRO_2_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_SBPRO_3_DECODER) += adpcm.o adpcm_data.o
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index ac74318..3c92fc6 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -107,6 +107,10 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
case AV_CODEC_ID_ADPCM_EA_XAS:
max_channels = 6;
break;
+ case AV_CODEC_ID_ADPCM_MTAF:
+ min_channels = 2;
+ max_channels = 8;
+ break;
case AV_CODEC_ID_ADPCM_PSX:
max_channels = 8;
break;
@@ -159,6 +163,7 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
case AV_CODEC_ID_ADPCM_AFC:
case AV_CODEC_ID_ADPCM_DTK:
case AV_CODEC_ID_ADPCM_PSX:
+ case AV_CODEC_ID_ADPCM_MTAF:
avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
break;
case AV_CODEC_ID_ADPCM_IMA_WS:
@@ -342,6 +347,15 @@ static inline int16_t adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, uint8_t
return c->predictor;
}
+static inline int16_t adpcm_mtaf_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
+{
+ c->predictor += ff_adpcm_mtaf_stepsize[c->step][nibble];
+ c->predictor = av_clip_int16(c->predictor);
+ c->step += ff_adpcm_index_table[nibble];
+ c->step = av_clip_uintp2(c->step, 5);
+ return c->predictor;
+}
+
static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1,
const uint8_t *in, ADPCMChannelStatus *left,
ADPCMChannelStatus *right, int channels, int sample_offset)
@@ -617,6 +631,11 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
buf_size = FFMIN(buf_size, avctx->block_align);
nb_samples = (buf_size - 6 * ch) * 2 / ch;
break;
+ case AV_CODEC_ID_ADPCM_MTAF:
+ if (avctx->block_align > 0)
+ buf_size = FFMIN(buf_size, avctx->block_align);
+ nb_samples = (buf_size - 16 * (ch / 2)) * 2 / ch;
+ break;
case AV_CODEC_ID_ADPCM_SBPRO_2:
case AV_CODEC_ID_ADPCM_SBPRO_3:
case AV_CODEC_ID_ADPCM_SBPRO_4:
@@ -887,6 +906,27 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
break;
}
+ case AV_CODEC_ID_ADPCM_MTAF:
+ for (channel = 0; channel < avctx->channels; channel+=2) {
+ bytestream2_skipu(&gb, 4);
+ c->status[channel ].step = bytestream2_get_le16u(&gb);
+ c->status[channel + 1].step = bytestream2_get_le16u(&gb);
+ c->status[channel ].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
+ bytestream2_skipu(&gb, 2);
+ c->status[channel + 1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
+ bytestream2_skipu(&gb, 2);
+ for (n = 0; n < nb_samples; n+=2) {
+ int v = bytestream2_get_byteu(&gb);
+ samples_p[channel][n ] = adpcm_mtaf_expand_nibble(&c->status[channel], v & 0x0F);
+ samples_p[channel][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel], v >> 4 );
+ }
+ for (n = 0; n < nb_samples; n+=2) {
+ int v = bytestream2_get_byteu(&gb);
+ samples_p[channel + 1][n ] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v & 0x0F);
+ samples_p[channel + 1][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v >> 4 );
+ }
+ }
+ break;
case AV_CODEC_ID_ADPCM_IMA_DK4:
for (channel = 0; channel < avctx->channels; channel++) {
cs = &c->status[channel];
@@ -1706,6 +1746,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg,
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_both, adpcm_ima_ws, "ADPCM IMA Westwood");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_s16, adpcm_ms, "ADPCM Microsoft");
+ADPCM_DECODER(AV_CODEC_ID_ADPCM_MTAF, sample_fmts_s16p, adpcm_mtaf, "ADPCM MTAF");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_PSX, sample_fmts_s16p, adpcm_psx, "ADPCM Playstation");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
diff --git a/libavcodec/adpcm_data.c b/libavcodec/adpcm_data.c
index 9c38360..655bfc4 100644
--- a/libavcodec/adpcm_data.c
+++ b/libavcodec/adpcm_data.c
@@ -110,3 +110,70 @@ const int16_t ff_adpcm_afc_coeffs[2][16] = {
{ 0, 2048, 0, 1024, 4096, 3584, 3072, 4608, 4200, 4800, 5120, 2048, 1024, 64512, 64512, 63488 },
{ 0, 0, 2048, 1024, 63488, 64000, 64512, 62976, 63288, 63236, 62464, 63488, 64512, 1024, 0, 0 }
};
+
+const int16_t ff_adpcm_mtaf_stepsize[32][16] = {
+ { 1, 5, 9, 13, 16, 20, 24, 28,
+ -1, -5, -9, -13, -16, -20, -24, -28, },
+ { 2, 6, 11, 15, 20, 24, 29, 33,
+ -2, -6, -11, -15, -20, -24, -29, -33, },
+ { 2, 7, 13, 18, 23, 28, 34, 39,
+ -2, -7, -13, -18, -23, -28, -34, -39, },
+ { 3, 9, 15, 21, 28, 34, 40, 46,
+ -3, -9, -15, -21, -28, -34, -40, -46, },
+ { 3, 11, 18, 26, 33, 41, 48, 56,
+ -3, -11, -18, -26, -33, -41, -48, -56, },
+ { 4, 13, 22, 31, 40, 49, 58, 67,
+ -4, -13, -22, -31, -40, -49, -58, -67, },
+ { 5, 16, 26, 37, 48, 59, 69, 80,
+ -5, -16, -26, -37, -48, -59, -69, -80, },
+ { 6, 19, 31, 44, 57, 70, 82, 95,
+ -6, -19, -31, -44, -57, -70, -82, -95, },
+ { 7, 22, 38, 53, 68, 83, 99, 114,
+ -7, -22, -38, -53, -68, -83, -99, -114, },
+ { 9, 27, 45, 63, 81, 99, 117, 135,
+ -9, -27, -45, -63, -81, -99, -117, -135, },
+ { 10, 32, 53, 75, 96, 118, 139, 161,
+ -10, -32, -53, -75, -96, -118, -139, -161, },
+ { 12, 38, 64, 90, 115, 141, 167, 193,
+ -12, -38, -64, -90, -115, -141, -167, -193, },
+ { 15, 45, 76, 106, 137, 167, 198, 228,
+ -15, -45, -76, -106, -137, -167, -198, -228, },
+ { 18, 54, 91, 127, 164, 200, 237, 273,
+ -18, -54, -91, -127, -164, -200, -237, -273, },
+ { 21, 65, 108, 152, 195, 239, 282, 326,
+ -21, -65, -108, -152, -195, -239, -282, -326, },
+ { 25, 77, 129, 181, 232, 284, 336, 388,
+ -25, -77, -129, -181, -232, -284, -336, -388, },
+ { 30, 92, 153, 215, 276, 338, 399, 461,
+ -30, -92, -153, -215, -276, -338, -399, -461, },
+ { 36, 109, 183, 256, 329, 402, 476, 549,
+ -36, -109, -183, -256, -329, -402, -476, -549, },
+ { 43, 130, 218, 305, 392, 479, 567, 654,
+ -43, -130, -218, -305, -392, -479, -567, -654, },
+ { 52, 156, 260, 364, 468, 572, 676, 780,
+ -52, -156, -260, -364, -468, -572, -676, -780, },
+ { 62, 186, 310, 434, 558, 682, 806, 930,
+ -62, -186, -310, -434, -558, -682, -806, -930, },
+ { 73, 221, 368, 516, 663, 811, 958, 1106,
+ -73, -221, -368, -516, -663, -811, -958, -1106, },
+ { 87, 263, 439, 615, 790, 966, 1142, 1318,
+ -87, -263, -439, -615, -790, -966, -1142, -1318, },
+ { 104, 314, 523, 733, 942, 1152, 1361, 1571,
+ -104, -314, -523, -733, -942, -1152, -1361, -1571, },
+ { 124, 374, 623, 873, 1122, 1372, 1621, 1871,
+ -124, -374, -623, -873, -1122, -1372, -1621, -1871, },
+ { 148, 445, 743, 1040, 1337, 1634, 1932, 2229,
+ -148, -445, -743, -1040, -1337, -1634, -1932, -2229, },
+ { 177, 531, 885, 1239, 1593, 1947, 2301, 2655,
+ -177, -531, -885, -1239, -1593, -1947, -2301, -2655, },
+ { 210, 632, 1053, 1475, 1896, 2318, 2739, 3161,
+ -210, -632, -1053, -1475, -1896, -2318, -2739, -3161, },
+ { 251, 753, 1255, 1757, 2260, 2762, 3264, 3766,
+ -251, -753, -1255, -1757, -2260, -2762, -3264, -3766, },
+ { 299, 897, 1495, 2093, 2692, 3290, 3888, 4486,
+ -299, -897, -1495, -2093, -2692, -3290, -3888, -4486, },
+ { 356, 1068, 1781, 2493, 3206, 3918, 4631, 5343,
+ -356, -1068, -1781, -2493, -3206, -3918, -4631, -5343, },
+ { 424, 1273, 2121, 2970, 3819, 4668, 5516, 6365,
+ -424, -1273, -2121, -2970, -3819, -4668, -5516, -6365, },
+};
diff --git a/libavcodec/adpcm_data.h b/libavcodec/adpcm_data.h
index b179d65..3ae2784 100644
--- a/libavcodec/adpcm_data.h
+++ b/libavcodec/adpcm_data.h
@@ -41,5 +41,6 @@ extern const int8_t ff_adpcm_AdaptCoeff2[];
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];
#endif /* AVCODEC_ADPCM_DATA_H */
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 44ebafd..6d0a7e7 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -524,6 +524,7 @@ void avcodec_register_all(void)
REGISTER_ENCDEC (ADPCM_IMA_WAV, adpcm_ima_wav);
REGISTER_DECODER(ADPCM_IMA_WS, adpcm_ima_ws);
REGISTER_ENCDEC (ADPCM_MS, adpcm_ms);
+ REGISTER_DECODER(ADPCM_MTAF, adpcm_mtaf);
REGISTER_DECODER(ADPCM_PSX, adpcm_psx);
REGISTER_DECODER(ADPCM_SBPRO_2, adpcm_sbpro_2);
REGISTER_DECODER(ADPCM_SBPRO_3, adpcm_sbpro_3);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 9ec9adf..00d0ef8 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -489,6 +489,7 @@ enum AVCodecID {
AV_CODEC_ID_ADPCM_PSX,
AV_CODEC_ID_ADPCM_AICA,
AV_CODEC_ID_ADPCM_IMA_DAT4,
+ AV_CODEC_ID_ADPCM_MTAF,
/* AMR */
AV_CODEC_ID_AMR_NB = 0x12000,
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index 23d5911..c7acd01 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -2690,6 +2690,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("DST (Direct Stream Transfer)"),
.props = AV_CODEC_PROP_LOSSLESS,
},
+ {
+ .id = AV_CODEC_ID_ADPCM_MTAF,
+ .type = AVMEDIA_TYPE_AUDIO,
+ .name = "adpcm_mtaf",
+ .long_name = NULL_IF_CONFIG_SMALL("ADPCM MTAF"),
+ .props = AV_CODEC_PROP_LOSSY,
+ },
/* subtitle codecs */
{
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 11ae4e8..7b99526 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -3601,6 +3601,8 @@ static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
return blocks * ((ba - 4 * ch) * 2 / ch);
case AV_CODEC_ID_ADPCM_MS:
return blocks * (2 + (ba - 7 * ch) * 2 / ch);
+ case AV_CODEC_ID_ADPCM_MTAF:
+ return blocks * (ba - 16) * 2 / ch;
}
}
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 0916f81..ee3006c 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -28,7 +28,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 57
-#define LIBAVCODEC_VERSION_MINOR 42
+#define LIBAVCODEC_VERSION_MINOR 43
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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