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avcodec: add adpcm_ima_apm encoder

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Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
This commit is contained in:
Zane van Iperen 2020-05-27 00:17:59 +10:00
parent 8598fc4010
commit 80dda80981
7 changed files with 38 additions and 4 deletions
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1
Changelog
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@ -7,6 +7,7 @@ version <next>:
- PGX decoder
- chromanr video filter
- VDPAU accelerated HEVC 10/12bit decoding
- ADPCM IMA Ubisoft APM encoder
version 4.3:

2
doc/general.texi
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@ -1113,7 +1113,7 @@ following image formats are supported:
@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 X @tab X
@item ADPCM IMA Ubisoft APM @tab @tab X
@item ADPCM IMA Ubisoft APM @tab X @tab X
@item ADPCM IMA Loki SDL MJPEG @tab @tab X
@item ADPCM IMA WAV @tab X @tab X
@item ADPCM IMA Westwood @tab @tab X

1
libavcodec/Makefile
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@ -854,6 +854,7 @@ 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-$(CONFIG_ADPCM_IMA_APM_ENCODER) += adpcmenc.o adpcm_data.o
OBJS-$(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

34
libavcodec/adpcmenc.c
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@ -74,7 +74,9 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
return AVERROR(EINVAL);
}
if (avctx->trellis && avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_SSI) {
if (avctx->trellis &&
(avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_SSI ||
avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_APM)) {
/*
* The current trellis implementation doesn't work for extended
* runs of samples without periodic resets. Disallow it.
@ -145,6 +147,14 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
avctx->frame_size = BLKSIZE * 2 / avctx->channels;
avctx->block_align = BLKSIZE;
break;
case AV_CODEC_ID_ADPCM_IMA_APM:
avctx->frame_size = BLKSIZE * 2 / avctx->channels;
avctx->block_align = BLKSIZE;
if (!(avctx->extradata = av_mallocz(28 + AV_INPUT_BUFFER_PADDING_SIZE)))
return AVERROR(ENOMEM);
avctx->extradata_size = 28;
break;
default:
return AVERROR(EINVAL);
}
@ -486,7 +496,8 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
if (avctx->codec_id == AV_CODEC_ID_ADPCM_SWF)
pkt_size = (2 + avctx->channels * (22 + 4 * (frame->nb_samples - 1)) + 7) / 8;
else if (avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_SSI)
else if (avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_SSI ||
avctx->codec_id == AV_CODEC_ID_ADPCM_IMA_APM)
pkt_size = (frame->nb_samples * avctx->channels) / 2;
else
pkt_size = avctx->block_align;
@ -711,6 +722,24 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
*dst++ = nibble;
}
break;
case AV_CODEC_ID_ADPCM_IMA_APM:
{
PutBitContext pb;
init_put_bits(&pb, dst, pkt_size);
av_assert0(avctx->trellis == 0);
for (n = frame->nb_samples / 2; n > 0; n--) {
for (ch = 0; ch < avctx->channels; ch++) {
put_bits(&pb, 4, adpcm_ima_qt_compress_sample(c->status + ch, *samples++));
put_bits(&pb, 4, adpcm_ima_qt_compress_sample(c->status + ch, samples[st]));
}
samples += avctx->channels;
}
flush_put_bits(&pb);
break;
}
default:
return AVERROR(EINVAL);
}
@ -743,6 +772,7 @@ AVCodec ff_ ## name_ ## _encoder = { \
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP, \
}
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_APM, adpcm_ima_apm, sample_fmts, AV_CODEC_CAP_SMALL_LAST_FRAME, "ADPCM IMA Ubisoft APM");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, sample_fmts_p, 0, "ADPCM IMA QuickTime");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_SSI, adpcm_ima_ssi, sample_fmts, AV_CODEC_CAP_SMALL_LAST_FRAME, "ADPCM IMA Simon & Schuster Interactive");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, sample_fmts_p, 0, "ADPCM IMA WAV");

1
libavcodec/allcodecs.c
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@ -608,6 +608,7 @@ 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_apm_encoder;
extern AVCodec ff_adpcm_ima_cunning_decoder;
extern AVCodec ff_adpcm_ima_dat4_decoder;
extern AVCodec ff_adpcm_ima_dk3_decoder;

1
libavcodec/utils.c
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@ -1481,6 +1481,7 @@ int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
case AV_CODEC_ID_8SVX_FIB:
case AV_CODEC_ID_ADPCM_CT:
case AV_CODEC_ID_ADPCM_IMA_APC:
case AV_CODEC_ID_ADPCM_IMA_APM:
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
case AV_CODEC_ID_ADPCM_IMA_OKI:
case AV_CODEC_ID_ADPCM_IMA_WS:

2
libavcodec/version.h
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@ -28,7 +28,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 58
#define LIBAVCODEC_VERSION_MINOR 96
#define LIBAVCODEC_VERSION_MINOR 97
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \