[FFmpeg-cvslog] lavc: add a libwavpack encoder wrapper
Anton Khirnov
git at videolan.org
Tue Jun 11 09:42:15 CEST 2013
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sat May 25 19:22:59 2013 +0200| [84d3ff50cd679e0f35f0b7ce2cb2cedd99169959] | committer: Anton Khirnov
lavc: add a libwavpack encoder wrapper
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=84d3ff50cd679e0f35f0b7ce2cb2cedd99169959
---
Changelog | 1 +
configure | 4 +
doc/encoders.texi | 29 +++++++
doc/general.texi | 11 ++-
libavcodec/Makefile | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/libwavpackenc.c | 194 ++++++++++++++++++++++++++++++++++++++++++++
libavcodec/version.h | 2 +-
8 files changed, 241 insertions(+), 2 deletions(-)
diff --git a/Changelog b/Changelog
index db2be8d..7a2a7c8 100644
--- a/Changelog
+++ b/Changelog
@@ -24,6 +24,7 @@ version 10:
- VC-1 interlaced B-frame support
- support for WavPack muxing (raw and in Matroska)
- Go2Webinar decoder
+- WavPack encoding through libwavpack
version 9:
diff --git a/configure b/configure
index 25fab1d..93a9b30 100755
--- a/configure
+++ b/configure
@@ -200,6 +200,7 @@ External library support:
--enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]
--enable-libvorbis enable Vorbis encoding via libvorbis [no]
--enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]
+ --enable-libwavpack enable wavpack encoding via libwavpack [no]
--enable-libx264 enable H.264 encoding via x264 [no]
--enable-libxavs enable AVS encoding via xavs [no]
--enable-libxvid enable Xvid encoding via xvidcore,
@@ -1060,6 +1061,7 @@ EXTERNAL_LIBRARY_LIST="
libvo_amrwbenc
libvorbis
libvpx
+ libwavpack
libx264
libxavs
libxvid
@@ -1790,6 +1792,7 @@ libvpx_vp8_decoder_deps="libvpx"
libvpx_vp8_encoder_deps="libvpx"
libvpx_vp9_decoder_deps="libvpx"
libvpx_vp9_encoder_deps="libvpx"
+libwavpack_encoder_deps="libwavpack"
libx264_encoder_deps="libx264"
libxavs_encoder_deps="libxavs"
libxvid_encoder_deps="libxvid"
@@ -3735,6 +3738,7 @@ enabled libvpx && {
die "ERROR: libvpx encoder version must be >=0.9.6"; }
enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
+enabled libwavpack && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput -lwavpack
enabled libx264 && require libx264 x264.h x264_encoder_encode -lx264 &&
{ check_cpp_condition x264.h "X264_BUILD >= 118" ||
die "ERROR: libx264 version must be >= 0.118."; }
diff --git a/doc/encoders.texi b/doc/encoders.texi
index abf5dbf..3d9ba75 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -412,6 +412,35 @@ Selected by Encoder (default)
@end table
+ at section libwavpack
+
+A wrapper providing WavPack encoding through libwavpack.
+
+Only lossless mode using 32-bit integer samples is supported currently.
+The @option{compression_level} option can be used to control speed vs.
+compression tradeoff, with the values mapped to libwavpack as follows:
+
+ at table @option
+
+ at item 0
+Fast mode - corresponding to the wavpack @option{-f} option.
+
+ at item 1
+Normal (default) settings.
+
+ at item 2
+High quality - corresponding to the wavpack @option{-h} option.
+
+ at item 3
+Very high quality - corresponding to the wavpack @option{-hh} option.
+
+ at item 4-8
+Same as 3, but with extra processing enabled - corresponding to the wavpack
+ at option{-x} option. I.e. 4 is the same as @option{-x2} and 8 is the same as
+ at option{-x6}.
+
+ at end table
+
@c man end AUDIO ENCODERS
@chapter Video Encoders
diff --git a/doc/general.texi b/doc/general.texi
index 16fc5e1..2f0e2b9 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -79,6 +79,14 @@ Go to @url{http://www.webmproject.org/} and follow the instructions for
installing the library. Then pass @code{--enable-libvpx} to configure to
enable it.
+ at section libwavpack
+
+Libav can make use of the libwavpack library for WavPack encoding.
+
+Go to @url{http://www.wavpack.com/} and follow the instructions for
+installing the library. Then pass @code{--enable-libwavpack} to configure to
+enable it.
+
@section x264
Libav can make use of the x264 library for H.264 encoding.
@@ -810,7 +818,8 @@ following image formats are supported:
@item TwinVQ (VQF flavor) @tab @tab X
@item Vorbis @tab E @tab X
@tab A native but very primitive encoder exists.
- at item WavPack @tab @tab X
+ at item WavPack @tab E @tab X
+ @tab supported through external library libwavpack
@item Westwood Audio (SND1) @tab @tab X
@item Windows Media Audio 1 @tab X @tab X
@item Windows Media Audio 2 @tab X @tab X
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 0381b79..d9c6e33 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -599,6 +599,7 @@ OBJS-$(CONFIG_LIBVPX_VP8_DECODER) += libvpxdec.o
OBJS-$(CONFIG_LIBVPX_VP8_ENCODER) += libvpxenc.o
OBJS-$(CONFIG_LIBVPX_VP9_DECODER) += libvpxdec.o
OBJS-$(CONFIG_LIBVPX_VP9_ENCODER) += libvpxenc.o
+OBJS-$(CONFIG_LIBWAVPACK_ENCODER) += libwavpackenc.o
OBJS-$(CONFIG_LIBX264_ENCODER) += libx264.o
OBJS-$(CONFIG_LIBXAVS_ENCODER) += libxavs.o
OBJS-$(CONFIG_LIBXVID_ENCODER) += libxvid.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index ceadcf5..6bfc042 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -432,6 +432,7 @@ void avcodec_register_all(void)
REGISTER_ENCODER(LIBVORBIS, libvorbis);
REGISTER_ENCDEC (LIBVPX_VP8, libvpx_vp8);
REGISTER_ENCDEC (LIBVPX_VP9, libvpx_vp9);
+ REGISTER_ENCODER(LIBWAVPACK, libwavpack);
REGISTER_ENCODER(LIBX264, libx264);
REGISTER_ENCODER(LIBXAVS, libxavs);
REGISTER_ENCODER(LIBXVID, libxvid);
diff --git a/libavcodec/libwavpackenc.c b/libavcodec/libwavpackenc.c
new file mode 100644
index 0000000..34ec013
--- /dev/null
+++ b/libavcodec/libwavpackenc.c
@@ -0,0 +1,194 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <wavpack/wavpack.h>
+#include <string.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/opt.h"
+#include "libavutil/samplefmt.h"
+
+#include "audio_frame_queue.h"
+#include "avcodec.h"
+#include "internal.h"
+
+#define WV_DEFAULT_BLOCK_SIZE 32768
+
+typedef struct LibWavpackContext {
+ const AVClass *class;
+ WavpackContext *wv;
+ AudioFrameQueue afq;
+
+ AVPacket *pkt;
+ int user_size;
+
+ int got_output;
+} LibWavpackContext;
+
+static int wavpack_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *frame, int *got_output)
+{
+ LibWavpackContext *s = avctx->priv_data;
+ int ret;
+
+ s->got_output = 0;
+ s->pkt = pkt;
+ s->user_size = pkt->size;
+
+ if (frame) {
+ ret = ff_af_queue_add(&s->afq, frame);
+ if (ret < 0)
+ return ret;
+
+ ret = WavpackPackSamples(s->wv, (int32_t*)frame->data[0], frame->nb_samples);
+ if (!ret) {
+ av_log(avctx, AV_LOG_ERROR, "Error encoding a frame: %s\n",
+ WavpackGetErrorMessage(s->wv));
+ return AVERROR_UNKNOWN;
+ }
+ }
+
+ if (!s->got_output &&
+ (!frame || frame->nb_samples < avctx->frame_size)) {
+ ret = WavpackFlushSamples(s->wv);
+ if (!ret) {
+ av_log(avctx, AV_LOG_ERROR, "Error flushing the encoder: %s\n",
+ WavpackGetErrorMessage(s->wv));
+ return AVERROR_UNKNOWN;
+ }
+ }
+
+ if (s->got_output) {
+ ff_af_queue_remove(&s->afq, avctx->frame_size, &pkt->pts, &pkt->duration);
+ *got_output = 1;
+ }
+
+ return 0;
+}
+
+static int encode_callback(void *id, void *data, int32_t count)
+{
+ AVCodecContext *avctx = id;
+ LibWavpackContext *s = avctx->priv_data;
+ int ret, offset = s->pkt->size;
+
+ if (s->user_size) {
+ if (s->user_size - count < s->pkt->size) {
+ av_log(avctx, AV_LOG_ERROR, "Provided packet too small.\n");
+ return 0;
+ }
+ s->pkt->size += count;
+ } else {
+ ret = av_grow_packet(s->pkt, count);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Error allocating output packet.\n");
+ return 0;
+ }
+ }
+
+ memcpy(s->pkt->data + offset, data, count);
+
+ s->got_output = 1;
+
+ return 1;
+}
+
+static av_cold int wavpack_encode_init(AVCodecContext *avctx)
+{
+ LibWavpackContext *s = avctx->priv_data;
+ WavpackConfig config = { 0 };
+ int ret;
+
+ s->wv = WavpackOpenFileOutput(encode_callback, avctx, NULL);
+ if (!s->wv) {
+ av_log(avctx, AV_LOG_ERROR, "Error allocating the encoder.\n");
+ return AVERROR(ENOMEM);
+ }
+
+ if (!avctx->frame_size)
+ avctx->frame_size = WV_DEFAULT_BLOCK_SIZE;
+
+ config.bytes_per_sample = 4;
+ config.bits_per_sample = 32;
+ config.block_samples = avctx->frame_size;
+ config.channel_mask = avctx->channel_layout;
+ config.num_channels = avctx->channels;
+ config.sample_rate = avctx->sample_rate;
+
+ if (avctx->compression_level != FF_COMPRESSION_DEFAULT) {
+ if (avctx->compression_level >= 3) {
+ config.flags |= CONFIG_VERY_HIGH_FLAG;
+
+ if (avctx->compression_level >= 8)
+ config.xmode = 6;
+ else if (avctx->compression_level >= 7)
+ config.xmode = 5;
+ else if (avctx->compression_level >= 6)
+ config.xmode = 4;
+ else if (avctx->compression_level >= 5)
+ config.xmode = 3;
+ else if (avctx->compression_level >= 4)
+ config.xmode = 2;
+ } else if (avctx->compression_level >= 2)
+ config.flags |= CONFIG_HIGH_FLAG;
+ else if (avctx->compression_level < 1)
+ config.flags |= CONFIG_FAST_FLAG;
+ }
+
+ ret = WavpackSetConfiguration(s->wv, &config, -1);
+ if (!ret)
+ goto fail;
+
+ ret = WavpackPackInit(s->wv);
+ if (!ret)
+ goto fail;
+
+ ff_af_queue_init(avctx, &s->afq);
+
+ return 0;
+
+fail:
+ av_log(avctx, AV_LOG_ERROR, "Error configuring the encoder: %s.\n",
+ WavpackGetErrorMessage(s->wv));
+ WavpackCloseFile(s->wv);
+ return AVERROR_UNKNOWN;
+}
+
+static av_cold int wavpack_encode_close(AVCodecContext *avctx)
+{
+ LibWavpackContext *s = avctx->priv_data;
+
+ WavpackCloseFile(s->wv);
+
+ ff_af_queue_close(&s->afq);
+
+ return 0;
+}
+
+AVCodec ff_libwavpack_encoder = {
+ .name = "libwavpack",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_WAVPACK,
+ .priv_data_size = sizeof(LibWavpackContext),
+ .init = wavpack_encode_init,
+ .encode2 = wavpack_encode_frame,
+ .close = wavpack_encode_close,
+ .capabilities = CODEC_CAP_DELAY | CODEC_CAP_SMALL_LAST_FRAME,
+ .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S32,
+ AV_SAMPLE_FMT_NONE },
+};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index e1b00ee..3405ce9 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -27,7 +27,7 @@
*/
#define LIBAVCODEC_VERSION_MAJOR 55
-#define LIBAVCODEC_VERSION_MINOR 8
+#define LIBAVCODEC_VERSION_MINOR 9
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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