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| author | Zane van Iperen <zane@zanevaniperen.com> | 2020-03-08 12:09:02 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-03-09 01:43:51 +0100 |
| commit | d90413e1e52ca453078f4cfd948466ffb591df21 (patch) | |
| tree | 8e3e50362e5c7775894d48864820f7d457616d55 | |
| parent | 0830e9116f786572865a9c800a9156d0c4294f27 (diff) | |
| download | ffmpeg-d90413e1e52ca453078f4cfd948466ffb591df21.tar.gz | |
avcodec: add decoder for High Voltage Software's ALP ADPCM
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | Changelog | 1 | ||||
| -rw-r--r-- | doc/general.texi | 1 | ||||
| -rw-r--r-- | libavcodec/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/adpcm.c | 36 | ||||
| -rw-r--r-- | libavcodec/allcodecs.c | 1 | ||||
| -rw-r--r-- | libavcodec/avcodec.h | 1 | ||||
| -rw-r--r-- | libavcodec/codec_desc.c | 7 | ||||
| -rw-r--r-- | libavcodec/version.h | 4 |
8 files changed, 50 insertions, 2 deletions
@@ -43,6 +43,7 @@ version <next>: - Rayman 2 ADPCM decoder - Rayman 2 APM demuxer - cas video filter +- High Voltage Software ADPCM decoder version 4.2: diff --git a/doc/general.texi b/doc/general.texi index dbdc348598..87eaad7791 100644 --- a/doc/general.texi +++ b/doc/general.texi @@ -1100,6 +1100,7 @@ following image formats are supported: @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 +@item ADPCM IMA High Voltage Software ALP @tab @tab X @item ADPCM IMA QuickTime @tab X @tab X @item ADPCM IMA Simon & Schuster Interactive @tab @tab X @item ADPCM IMA Ubisoft APM @tab @tab X diff --git a/libavcodec/Makefile b/libavcodec/Makefile index f1c032b456..0fd374ffed 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -834,6 +834,7 @@ OBJS-$(CONFIG_ADPCM_G726_ENCODER) += g726.o OBJS-$(CONFIG_ADPCM_G726LE_DECODER) += g726.o OBJS-$(CONFIG_ADPCM_G726LE_ENCODER) += g726.o OBJS-$(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_DAT4_DECODER) += adpcm.o adpcm_data.o diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c index 5f152ee6ef..c69cac3379 100644 --- a/libavcodec/adpcm.c +++ b/libavcodec/adpcm.c @@ -15,6 +15,7 @@ * Argonaut Games ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com) * 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) * * This file is part of FFmpeg. * @@ -280,6 +281,29 @@ static inline int16_t adpcm_ima_expand_nibble(ADPCMChannelStatus *c, int8_t nibb return (int16_t)c->predictor; } +static inline int16_t adpcm_ima_alp_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int shift) +{ + int step_index; + int predictor; + int sign, delta, diff, step; + + step = ff_adpcm_step_table[c->step_index]; + step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble]; + step_index = av_clip(step_index, 0, 88); + + sign = nibble & 8; + delta = nibble & 7; + diff = (delta * step) >> shift; + predictor = c->predictor; + if (sign) predictor -= diff; + else predictor += diff; + + c->predictor = av_clip_int16(predictor); + c->step_index = step_index; + + return (int16_t)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; @@ -675,6 +699,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb, case AV_CODEC_ID_ADPCM_AICA: case AV_CODEC_ID_ADPCM_IMA_SSI: case AV_CODEC_ID_ADPCM_IMA_APM: + case AV_CODEC_ID_ADPCM_IMA_ALP: nb_samples = buf_size * 2 / ch; break; } @@ -1247,6 +1272,16 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data, samples += avctx->channels; } break; + case AV_CODEC_ID_ADPCM_IMA_ALP: + for (n = nb_samples / 2; n > 0; n--) { + for (channel = 0; channel < avctx->channels; channel++) { + int v = bytestream2_get_byteu(&gb); + *samples++ = adpcm_ima_alp_expand_nibble(&c->status[channel], v >> 4 , 2); + samples[st] = adpcm_ima_alp_expand_nibble(&c->status[channel], v & 0x0F, 2); + } + samples += avctx->channels; + } + break; case AV_CODEC_ID_ADPCM_IMA_OKI: while (bytestream2_get_bytes_left(&gb) > 0) { int v = bytestream2_get_byteu(&gb); @@ -1997,6 +2032,7 @@ ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_RAD, sample_fmts_s16, adpcm_ima_rad, "ADPCM IMA Radical"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SSI, sample_fmts_s16, adpcm_ima_ssi, "ADPCM IMA Simon & Schuster Interactive"); ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG"); +ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ALP, sample_fmts_s16, adpcm_ima_alp, "ADPCM IMA High Voltage Software ALP"); 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_both, adpcm_ms, "ADPCM Microsoft"); diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 674995df72..f4cf180716 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -599,6 +599,7 @@ extern AVCodec ff_adpcm_g726_decoder; extern AVCodec ff_adpcm_g726le_encoder; extern AVCodec ff_adpcm_g726le_decoder; 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_dat4_decoder; diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 5a0fc3405c..833642d692 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -552,6 +552,7 @@ enum AVCodecID { AV_CODEC_ID_ADPCM_IMA_SSI, AV_CODEC_ID_ADPCM_ZORK, AV_CODEC_ID_ADPCM_IMA_APM, + AV_CODEC_ID_ADPCM_IMA_ALP, /* AMR */ AV_CODEC_ID_AMR_NB = 0x12000, diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c index 52178e7afe..0f5ddd9a9f 100644 --- a/libavcodec/codec_desc.c +++ b/libavcodec/codec_desc.c @@ -2325,6 +2325,13 @@ static const AVCodecDescriptor codec_descriptors[] = { .long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA Ubisoft APM"), .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY, }, + { + .id = AV_CODEC_ID_ADPCM_IMA_ALP, + .type = AVMEDIA_TYPE_AUDIO, + .name = "adpcm_ima_alp", + .long_name = NULL_IF_CONFIG_SMALL("ADPCM IMA High Voltage Software ALP"), + .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY, + }, /* AMR */ { diff --git a/libavcodec/version.h b/libavcodec/version.h index 36536c3725..c051ac0754 100644 --- a/libavcodec/version.h +++ b/libavcodec/version.h @@ -28,8 +28,8 @@ #include "libavutil/version.h" #define LIBAVCODEC_VERSION_MAJOR 58 -#define LIBAVCODEC_VERSION_MINOR 73 -#define LIBAVCODEC_VERSION_MICRO 102 +#define LIBAVCODEC_VERSION_MINOR 74 +#define LIBAVCODEC_VERSION_MICRO 100 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ LIBAVCODEC_VERSION_MINOR, \ |