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authorZane van Iperen <zane@zanevaniperen.com>2020-05-27 00:17:59 +1000
committerZane van Iperen <zane@zanevaniperen.com>2020-07-21 11:36:14 +1000
commit80dda809811ea68cc7d7e4064b51fc433c54384e (patch)
treefb2e96dd98c5b348736ea2f836142e30d7f93be9 /libavcodec
parent8598fc4010dc49ffdb360a844c4f60dc7d8cef15 (diff)
downloadffmpeg-80dda809811ea68cc7d7e4064b51fc433c54384e.tar.gz
avcodec: add adpcm_ima_apm encoder
Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
Diffstat (limited to 'libavcodec')
-rw-r--r--libavcodec/Makefile1
-rw-r--r--libavcodec/adpcmenc.c34
-rw-r--r--libavcodec/allcodecs.c1
-rw-r--r--libavcodec/utils.c1
-rw-r--r--libavcodec/version.h2
5 files changed, 36 insertions, 3 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 18353da549..c48138d0ad 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -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
diff --git a/libavcodec/adpcmenc.c b/libavcodec/adpcmenc.c
index 1e94ef4047..4985abb163 100644
--- a/libavcodec/adpcmenc.c
+++ b/libavcodec/adpcmenc.c
@@ -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");
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index a5048290f7..7a941b257e 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -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;
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 2ece34f921..a379d62802 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -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:
diff --git a/libavcodec/version.h b/libavcodec/version.h
index ad0bfd619d..d5dca8cbda 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 96
+#define LIBAVCODEC_VERSION_MINOR 97
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \