[FFmpeg-devel] [PATCH v3 1/2] avcodec: add adpcm_ima_ssi encoder
Zane van Iperen
zane at zanevaniperen.com
Fri Apr 10 15:26:50 EEST 2020
Signed-off-by: Zane van Iperen <zane at zanevaniperen.com>
---
Changelog | 1 +
doc/general.texi | 2 +-
libavcodec/Makefile | 1 +
libavcodec/adpcmenc.c | 30 ++++++++++++++++++++++++++++++
libavcodec/allcodecs.c | 1 +
libavcodec/utils.c | 1 +
libavcodec/version.h | 2 +-
7 files changed, 36 insertions(+), 2 deletions(-)
diff --git a/Changelog b/Changelog
index b0c016185e..f84420c6eb 100644
--- a/Changelog
+++ b/Changelog
@@ -57,6 +57,7 @@ version <next>:
- overlay_cuda filter
- switch from AvxSynth to AviSynth+ on Linux
- mv30 decoder
+- Simon & Schuster Interactive ADPCM encoder
version 4.2:
diff --git a/doc/general.texi b/doc/general.texi
index 4adcc9e742..a7b0cc1718 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -1107,7 +1107,7 @@ 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 abb4992b60..52b566fcfe 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -852,6 +852,7 @@ 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 668939c778..1d6ea798a9 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) {
+ /*
+ * Trellis sort-of works, but has some DC offset problems.
+ * Disable it until I can figure out why.
+ */
+ av_log(avctx, AV_LOG_ERROR, "trellis not supported\n");
+ return AVERROR(EINVAL);
+ }
+
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;
+ avctx->block_align = BLKSIZE;
+ break;
default:
ret = AVERROR(EINVAL);
goto error;
@@ -568,6 +581,22 @@ 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;
@@ -720,6 +749,7 @@ AVCodec ff_ ## name_ ## _encoder = { \
}
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, sample_fmts_p, "ADPCM IMA QuickTime");
+ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_SSI, adpcm_ima_ssi, sample_fmts, "ADPCM IMA Simon & Schuster Interactive");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, sample_fmts_p, "ADPCM IMA WAV");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_MS, adpcm_ms, sample_fmts, "ADPCM Microsoft");
ADPCM_ENCODER(AV_CODEC_ID_ADPCM_SWF, adpcm_swf, sample_fmts, "ADPCM Shockwave Flash");
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index e7b29426db..b4e0d65052 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -617,6 +617,7 @@ 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 4ab8cff4f5..b297eb3552 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -1463,6 +1463,7 @@ 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 e62d1a7925..a4eb83124c 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 78
+#define LIBAVCODEC_VERSION_MINOR 79
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
--
2.17.1
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