[FFmpeg-cvslog] avcodec: add adpcm_ima_ssi encoder
Zane van Iperen
git at videolan.org
Wed May 27 23:19:39 EEST 2020
ffmpeg | branch: master | Zane van Iperen <zane at zanevaniperen.com> | Sat May 16 11:53:36 2020 +0000| [b1189c1571321626b2777bd04f81b3e237f8210b] | committer: Michael Niedermayer
avcodec: add adpcm_ima_ssi encoder
Signed-off-by: Zane van Iperen <zane at zanevaniperen.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b1189c1571321626b2777bd04f81b3e237f8210b
---
Changelog | 1 +
doc/general.texi | 2 +-
libavcodec/Makefile | 1 +
libavcodec/adpcmenc.c | 32 ++++++++++++++++++++++++++++++++
libavcodec/allcodecs.c | 1 +
libavcodec/utils.c | 1 +
libavcodec/version.h | 2 +-
7 files changed, 38 insertions(+), 2 deletions(-)
diff --git a/Changelog b/Changelog
index 57521b963a..24dbbc2208 100644
--- a/Changelog
+++ b/Changelog
@@ -71,6 +71,7 @@ version <next>:
- gradients source video filter
- MediaFoundation encoder wrapper
- untile filter
+- Simon & Schuster Interactive ADPCM encoder
version 4.2:
diff --git a/doc/general.texi b/doc/general.texi
index 4aaf506e56..9b0ee96752 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -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
- at item ADPCM IMA Simon & Schuster Interactive @tab @tab X
+ at 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
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 6d816308c7..d0917a656f 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -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
diff --git a/libavcodec/adpcmenc.c b/libavcodec/adpcmenc.c
index a514c2ffa7..6a5f50568c 100644
--- a/libavcodec/adpcmenc.c
+++ b/libavcodec/adpcmenc.c
@@ -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");
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index eb5044f80e..5899eee5ee 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -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;
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 3899a13b99..a9c69e30dd 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -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:
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 2d2cc69ab6..91002dc0b9 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -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, \
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