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Code Issues Releases Activity

avcodec: add adpcm_ima_ssi encoder

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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 2020-05-16 11:53:36 +00:00 committed by Michael Niedermayer
parent 908199802a
commit b1189c1571
7 changed files with 38 additions and 2 deletions
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1
Changelog
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@ -71,6 +71,7 @@ version <next>:
- gradients source video filter
- MediaFoundation encoder wrapper
- untile filter
- Simon & Schuster Interactive ADPCM encoder
version 4.2:

2
doc/general.texi
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@ -1108,7 +1108,7 @@ following image formats are supported:
@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 Simon & Schuster Interactive @tab X @tab X
@item ADPCM IMA Ubisoft APM @tab @tab X
@item ADPCM IMA Loki SDL MJPEG @tab @tab X
@item ADPCM IMA WAV @tab X @tab X

1
libavcodec/Makefile
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@ -865,6 +865,7 @@ OBJS-$(CONFIG_ADPCM_IMA_QT_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_QT_ENCODER) += adpcmenc.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_RAD_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_SSI_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_SSI_ENCODER) += adpcmenc.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_SMJPEG_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_WAV_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_IMA_WAV_ENCODER) += adpcmenc.o adpcm_data.o

32
libavcodec/adpcmenc.c
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@ -77,6 +77,15 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
return AVERROR(EINVAL);
}
if (avctx->trellis && avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_SSI) {
/*
* The current trellis implementation doesn't work for extended
* runs of samples without periodic resets. Disallow it.
*/
av_log(avctx, AV_LOG_ERROR, "trellis not supported\n");
return AVERROR_PATCHWELCOME;
}
if (avctx->trellis) {
int frontier = 1 << avctx->trellis;
int max_paths = frontier * FREEZE_INTERVAL;
@ -139,6 +148,10 @@ static av_cold int adpcm_encode_init(AVCodecContext *avctx)
}
avctx->frame_size = 512 * (avctx->sample_rate / 11025);
break;
case AV_CODEC_ID_ADPCM_IMA_SSI:
avctx->frame_size = BLKSIZE * 2 / avctx->channels;
avctx->block_align = BLKSIZE;
break;
default:
ret = AVERROR(EINVAL);
goto error;
@ -483,6 +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)
pkt_size = (frame->nb_samples * avctx->channels) / 2;
else
pkt_size = avctx->block_align;
if ((ret = ff_alloc_packet2(avctx, avpkt, pkt_size, 0)) < 0)
@ -567,6 +582,22 @@ static int adpcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
flush_put_bits(&pb);
break;
}
case AV_CODEC_ID_ADPCM_IMA_SSI:
{
PutBitContext pb;
init_put_bits(&pb, dst, pkt_size);
av_assert0(avctx->trellis == 0);
for (i = 0; i < frame->nb_samples; i++) {
for (ch = 0; ch < avctx->channels; ch++) {
put_bits(&pb, 4, adpcm_ima_qt_compress_sample(c->status + ch, *samples++));
}
}
flush_put_bits(&pb);
break;
}
case AV_CODEC_ID_ADPCM_SWF:
{
PutBitContext pb;
@ -721,6 +752,7 @@ AVCodec ff_ ## name_ ## _encoder = { \
}
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");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_MS, adpcm_ms, sample_fmts, 0, "ADPCM Microsoft");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_SWF, adpcm_swf, sample_fmts, 0, "ADPCM Shockwave Flash");

1
libavcodec/allcodecs.c
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@ -619,6 +619,7 @@ extern AVCodec ff_adpcm_ima_qt_encoder;
extern AVCodec ff_adpcm_ima_qt_decoder;
extern AVCodec ff_adpcm_ima_rad_decoder;
extern AVCodec ff_adpcm_ima_ssi_decoder;
extern AVCodec ff_adpcm_ima_ssi_encoder;
extern AVCodec ff_adpcm_ima_smjpeg_decoder;
extern AVCodec ff_adpcm_ima_wav_encoder;
extern AVCodec ff_adpcm_ima_wav_decoder;

1
libavcodec/utils.c
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@ -1475,6 +1475,7 @@ int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
case AV_CODEC_ID_ADPCM_IMA_OKI:
case AV_CODEC_ID_ADPCM_IMA_WS:
case AV_CODEC_ID_ADPCM_IMA_SSI:
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_ADPCM_YAMAHA:
case AV_CODEC_ID_ADPCM_AICA:

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 88
#define LIBAVCODEC_VERSION_MINOR 89
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \