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avcodec: add support for Cunning Developments' ADPCM
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Zane van Iperen
Michael Niedermayer
parent
f4d8fad802
commit
3e22e738c0
@ -62,6 +62,7 @@ version <next>:
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- tmedian filter
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- maskedthreshold filter
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- Support for muxing pcm and pgs in m2ts
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- Cunning Developments ADPCM decoder
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version 4.2:
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@ -1102,6 +1102,7 @@ following image formats are supported:
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@item ADPCM G.726 @tab X @tab X
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@item ADPCM IMA AMV @tab @tab X
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@tab Used in AMV files
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@item ADPCM IMA Cunning Developments @tab @tab X
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@item ADPCM IMA Electronic Arts EACS @tab @tab X
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@item ADPCM IMA Electronic Arts SEAD @tab @tab X
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@item ADPCM IMA Funcom @tab @tab X
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@ -843,6 +843,7 @@ OBJS-$(CONFIG_ADPCM_IMA_AMV_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_ALP_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_APC_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_APM_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_CUNNING_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_DAT4_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_DK3_DECODER) += adpcm.o adpcm_data.o
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OBJS-$(CONFIG_ADPCM_IMA_DK4_DECODER) += adpcm.o adpcm_data.o
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@ -16,6 +16,7 @@
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* Simon & Schuster Interactive ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
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* Ubisoft ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
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* High Voltage Software ALP decoder by Zane van Iperen (zane@zanevaniperen.com)
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* Cunning Developments decoder by Zane van Iperen (zane@zanevaniperen.com)
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*
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* This file is part of FFmpeg.
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*
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@ -109,6 +110,9 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
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unsigned int max_channels = 2;
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switch(avctx->codec->id) {
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case AV_CODEC_ID_ADPCM_IMA_CUNNING:
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max_channels = 1;
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break;
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case AV_CODEC_ID_ADPCM_DTK:
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case AV_CODEC_ID_ADPCM_EA:
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min_channels = 2;
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@ -325,6 +329,26 @@ static inline int16_t adpcm_ima_mtf_expand_nibble(ADPCMChannelStatus *c, int nib
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return (int16_t)c->predictor;
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}
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static inline int16_t adpcm_ima_cunning_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
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{
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int step_index;
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int predictor;
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int step;
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nibble = sign_extend(nibble & 0xF, 4);
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step = ff_adpcm_ima_cunning_step_table[c->step_index];
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step_index = c->step_index + ff_adpcm_ima_cunning_index_table[abs(nibble)];
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step_index = av_clip(step_index, 0, 60);
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predictor = c->predictor + step * nibble;
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c->predictor = av_clip_int16(predictor);
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c->step_index = step_index;
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return c->predictor;
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}
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static inline int16_t adpcm_ima_wav_expand_nibble(ADPCMChannelStatus *c, GetBitContext *gb, int bps)
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{
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int nibble, step_index, predictor, sign, delta, diff, step, shift;
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@ -713,6 +737,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
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/* simple 4-bit adpcm */
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case AV_CODEC_ID_ADPCM_CT:
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case AV_CODEC_ID_ADPCM_IMA_APC:
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case AV_CODEC_ID_ADPCM_IMA_CUNNING:
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case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
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case AV_CODEC_ID_ADPCM_IMA_OKI:
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case AV_CODEC_ID_ADPCM_IMA_WS:
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@ -1304,6 +1329,13 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
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samples += avctx->channels;
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}
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break;
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case AV_CODEC_ID_ADPCM_IMA_CUNNING:
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for (n = 0; n < nb_samples / 2; n++) {
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int v = bytestream2_get_byteu(&gb);
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*samples++ = adpcm_ima_cunning_expand_nibble(&c->status[0], v & 0x0F);
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*samples++ = adpcm_ima_cunning_expand_nibble(&c->status[0], v >> 4);
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}
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break;
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case AV_CODEC_ID_ADPCM_IMA_OKI:
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for (n = nb_samples >> (1 - st); n > 0; n--) {
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int v = bytestream2_get_byteu(&gb);
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@ -2053,6 +2085,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16p, adpcm_ea_xas,
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APM, sample_fmts_s16, adpcm_ima_apm, "ADPCM IMA Ubisoft APM");
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_CUNNING, sample_fmts_s16, adpcm_ima_cunning, "ADPCM IMA Cunning Developments");
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DAT4, sample_fmts_s16, adpcm_ima_dat4, "ADPCM IMA Eurocom DAT4");
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
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ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
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@ -177,3 +177,16 @@ const int16_t ff_adpcm_mtaf_stepsize[32][16] = {
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{ 424, 1273, 2121, 2970, 3819, 4668, 5516, 6365,
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-424, -1273, -2121, -2970, -3819, -4668, -5516, -6365, },
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};
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const int8_t ff_adpcm_ima_cunning_index_table[8] = {
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-1, -1, -1, -1, 1, 2, 3, 4,
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};
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const int16_t ff_adpcm_ima_cunning_step_table[61] = {
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1, 1, 1, 1, 2, 2, 3, 3, 4, 5,
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6, 7, 8, 10, 12, 14, 16, 20, 24, 28,
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32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
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192, 224, 256, 320, 384, 448, 512, 640, 768, 896,
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1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120,
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6144, 7168, 8192, 10240, 12288, 14336, 16384, 20480, 24576, 28672, 0
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};
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@ -42,5 +42,7 @@ extern const int16_t ff_adpcm_yamaha_indexscale[];
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extern const int8_t ff_adpcm_yamaha_difflookup[];
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extern const int16_t ff_adpcm_afc_coeffs[2][16];
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extern const int16_t ff_adpcm_mtaf_stepsize[32][16];
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extern const int8_t ff_adpcm_ima_cunning_index_table[8];
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extern const int16_t ff_adpcm_ima_cunning_step_table[61];
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#endif /* AVCODEC_ADPCM_DATA_H */
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@ -605,6 +605,7 @@ extern AVCodec ff_adpcm_ima_amv_decoder;
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extern AVCodec ff_adpcm_ima_alp_decoder;
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extern AVCodec ff_adpcm_ima_apc_decoder;
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extern AVCodec ff_adpcm_ima_apm_decoder;
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extern AVCodec ff_adpcm_ima_cunning_decoder;
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extern AVCodec ff_adpcm_ima_dat4_decoder;
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extern AVCodec ff_adpcm_ima_dk3_decoder;
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extern AVCodec ff_adpcm_ima_dk4_decoder;
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@ -2348,6 +2348,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
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.long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Capcom's MT Framework"),
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.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
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},
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{
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.id = AV_CODEC_ID_ADPCM_IMA_CUNNING,
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.type = AVMEDIA_TYPE_AUDIO,
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.name = "adpcm_ima_cunning",
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.long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Cunning Developments"),
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.props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
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},
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/* AMR */
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{
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@ -382,6 +382,7 @@ enum AVCodecID {
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AV_CODEC_ID_ADPCM_IMA_APM,
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AV_CODEC_ID_ADPCM_IMA_ALP,
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AV_CODEC_ID_ADPCM_IMA_MTF,
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AV_CODEC_ID_ADPCM_IMA_CUNNING,
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/* AMR */
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AV_CODEC_ID_AMR_NB = 0x12000,
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@ -28,7 +28,7 @@
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#include "libavutil/version.h"
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#define LIBAVCODEC_VERSION_MAJOR 58
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#define LIBAVCODEC_VERSION_MINOR 81
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#define LIBAVCODEC_VERSION_MINOR 82
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#define LIBAVCODEC_VERSION_MICRO 100
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#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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