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libtwolame MP2 encoding support

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2012-08-01 14:33:34 +00:00
parent fe40dc1cec
commit f5f98727b3
6 changed files with 213 additions and 0 deletions
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1
Changelog
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@ -40,6 +40,7 @@ version next:
- flite filter
- Canopus Lossless Codec decoder
- bitmap subtitles in filters (experimental and temporary)
- MP2 encoding via TwoLAME
version 0.11:

5
configure vendored
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@ -202,6 +202,7 @@ External library support:
--enable-libspeex enable Speex de/encoding via libspeex [no]
--enable-libstagefright-h264 enable H.264 decoding via libstagefright [no]
--enable-libtheora enable Theora encoding via libtheora [no]
--enable-libtwolame enable MP2 encoding via libtwolame [no]
--enable-libutvideo enable Ut Video encoding and decoding via libutvideo [no]
--enable-libv4l2 enable libv4l2/v4l-utils [no]
--enable-libvo-aacenc enable AAC encoding via libvo-aacenc [no]
@ -1101,6 +1102,7 @@ CONFIG_LIST="
libspeex
libstagefright_h264
libtheora
libtwolame
libutvideo
libv4l2
libvo_aacenc
@ -1676,6 +1678,7 @@ libspeex_decoder_deps="libspeex"
libspeex_encoder_deps="libspeex"
libstagefright_h264_decoder_deps="libstagefright_h264"
libtheora_encoder_deps="libtheora"
libtwolame_encoder_deps="libtwolame"
libvo_aacenc_encoder_deps="libvo_aacenc"
libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
libvorbis_decoder_deps="libvorbis"
@ -3440,6 +3443,7 @@ enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessS
media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
enabled libtheora && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
enabled libtwolame && require libtwolame twolame.h twolame_init -ltwolame
enabled libutvideo && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
enabled libv4l2 && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
@ -3825,6 +3829,7 @@ echo "libschroedinger enabled ${libschroedinger-no}"
echo "libspeex enabled ${libspeex-no}"
echo "libstagefright-h264 enabled ${libstagefright_h264-no}"
echo "libtheora enabled ${libtheora-no}"
echo "libtwolame enabled ${libtwolame-no}"
echo "libutvideo enabled ${libutvideo-no}"
echo "libv4l2 enabled ${libv4l2-no}"
echo "libvo-aacenc support ${libvo_aacenc-no}"

9
doc/general.texi
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@ -79,6 +79,14 @@ Go to @url{http://lame.sourceforge.net/} and follow the
instructions for installing the library.
Then pass @code{--enable-libmp3lame} to configure to enable it.
@section TwoLAME
FFmpeg can make use of the TwoLAME library for MP2 encoding.
Go to @url{http://www.twolame.org/} and follow the
instructions for installing the library.
Then pass @code{--enable-libtwolame} to configure to enable it.
@section libvpx
FFmpeg can make use of the libvpx library for VP8 encoding.
@ -797,6 +805,7 @@ following image formats are supported:
@tab Only versions 3.97-3.99 are supported.
@item MP1 (MPEG audio layer 1) @tab @tab IX
@item MP2 (MPEG audio layer 2) @tab IX @tab IX
@tab libtwolame can be used alternatively for encoding.
@item MP3 (MPEG audio layer 3) @tab E @tab IX
@tab encoding supported through external library LAME, ADU MP3 and MP3onMP4 also supported
@item MPEG-4 Audio Lossless Coding (ALS) @tab @tab X

1
libavcodec/Makefile
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@ -697,6 +697,7 @@ OBJS-$(CONFIG_LIBSPEEX_DECODER) += libspeexdec.o
OBJS-$(CONFIG_LIBSPEEX_ENCODER) += libspeexenc.o audio_frame_queue.o
OBJS-$(CONFIG_LIBSTAGEFRIGHT_H264_DECODER)+= libstagefright.o
OBJS-$(CONFIG_LIBTHEORA_ENCODER) += libtheoraenc.o
OBJS-$(CONFIG_LIBTWOLAME_ENCODER) += libtwolame.o
OBJS-$(CONFIG_LIBUTVIDEO_DECODER) += libutvideodec.o
OBJS-$(CONFIG_LIBUTVIDEO_ENCODER) += libutvideoenc.o
OBJS-$(CONFIG_LIBVO_AACENC_ENCODER) += libvo-aacenc.o mpeg4audio.o \

1
libavcodec/allcodecs.c
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@ -434,6 +434,7 @@ void avcodec_register_all(void)
REGISTER_ENCDEC (LIBSPEEX, libspeex);
REGISTER_DECODER (LIBSTAGEFRIGHT_H264, libstagefright_h264);
REGISTER_ENCODER (LIBTHEORA, libtheora);
REGISTER_ENCODER (LIBTWOLAME, libtwolame);
REGISTER_ENCDEC (LIBUTVIDEO, libutvideo);
REGISTER_ENCODER (LIBVO_AACENC, libvo_aacenc);
REGISTER_ENCODER (LIBVO_AMRWBENC, libvo_amrwbenc);

196
libavcodec/libtwolame.c Normal file
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@ -0,0 +1,196 @@
/*
* Interface to libtwolame for mp2 encoding
* Copyright (c) 2012 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Interface to libtwolame for mp2 encoding.
*/
#include <twolame.h>
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include "mpegaudio.h"
typedef struct TWOLAMEContext {
AVClass *class;
int mode;
int psymodel;
int energy;
int error_protection;
int copyright;
int original;
twolame_options *glopts;
int64_t next_pts;
} TWOLAMEContext;
static av_cold int twolame_encode_close(AVCodecContext *avctx)
{
TWOLAMEContext *s = avctx->priv_data;
twolame_close(&s->glopts);
return 0;
}
static av_cold int twolame_encode_init(AVCodecContext *avctx)
{
TWOLAMEContext *s = avctx->priv_data;
int ret;
avctx->frame_size = TWOLAME_SAMPLES_PER_FRAME;
s->glopts = twolame_init();
if (!s->glopts)
return AVERROR(ENOMEM);
twolame_set_verbosity(s->glopts, 0);
twolame_set_mode(s->glopts, s->mode);
twolame_set_psymodel(s->glopts, s->psymodel);
twolame_set_energy_levels(s->glopts, s->energy);
twolame_set_error_protection(s->glopts, s->error_protection);
twolame_set_num_channels(s->glopts, avctx->channels);
twolame_set_in_samplerate(s->glopts, avctx->sample_rate);
twolame_set_out_samplerate(s->glopts, avctx->sample_rate);
if (avctx->flags & CODEC_FLAG_QSCALE || !avctx->bit_rate) {
twolame_set_VBR(s->glopts, TRUE);
twolame_set_VBR_level(s->glopts, avctx->global_quality);
av_log(avctx, AV_LOG_WARNING, "VBR mode is experimental!\n");
} else {
twolame_set_bitrate(s->glopts, avctx->bit_rate / 1000);
}
if ((ret = twolame_init_params(s->glopts)))
goto error;
return 0;
error:
twolame_encode_close(avctx);
return ret;
}
static int twolame_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr)
{
TWOLAMEContext *s = avctx->priv_data;
int ret;
if ((ret = ff_alloc_packet2(avctx, avpkt, MPA_MAX_CODED_FRAME_SIZE)))
return ret;
if (frame) {
switch (avctx->sample_fmt) {
case AV_SAMPLE_FMT_FLT:
ret = twolame_encode_buffer_float32_interleaved(s->glopts,
frame->data[0],
frame->nb_samples,
avpkt->data, avpkt->size);
break;
case AV_SAMPLE_FMT_FLTP:
ret = twolame_encode_buffer_float32(s->glopts,
frame->data[0], frame->data[1],
frame->nb_samples,
avpkt->data, avpkt->size);
break;
case AV_SAMPLE_FMT_S16:
ret = twolame_encode_buffer_interleaved(s->glopts,
frame->data[0],
frame->nb_samples,
avpkt->data, avpkt->size);
break;
case AV_SAMPLE_FMT_S16P:
ret = twolame_encode_buffer(s->glopts,
frame->data[0], frame->data[1],
frame->nb_samples,
avpkt->data, avpkt->size);
break;
default:
return AVERROR_BUG;
}
} else {
ret = twolame_encode_flush(s->glopts, avpkt->data, avpkt->size);
}
if (ret > 0) {
avpkt->duration = ff_samples_to_time_base(avctx, avctx->frame_size);
if (frame) {
if (frame->pts != AV_NOPTS_VALUE)
avpkt->pts = frame->pts;
} else {
avpkt->pts = s->next_pts;
}
if (avpkt->pts != AV_NOPTS_VALUE)
s->next_pts = avpkt->pts + avpkt->duration;
avpkt->size = ret;
*got_packet_ptr = 1;
return 0;
}
return ret;
}
#define OFFSET(x) offsetof(TWOLAMEContext, x)
#define AE AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "mode", "Mpeg Mode", OFFSET(mode), AV_OPT_TYPE_INT, { TWOLAME_AUTO_MODE }, TWOLAME_AUTO_MODE, TWOLAME_MONO, AE, "mode"},
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { TWOLAME_AUTO_MODE }, 0, 0, AE, "mode" },
{ "stereo", NULL, 0, AV_OPT_TYPE_CONST, { TWOLAME_STEREO }, 0, 0, AE, "mode" },
{ "joint_stereo", NULL, 0, AV_OPT_TYPE_CONST, { TWOLAME_JOINT_STEREO }, 0, 0, AE, "mode" },
{ "dual_channel", NULL, 0, AV_OPT_TYPE_CONST, { TWOLAME_DUAL_CHANNEL }, 0, 0, AE, "mode" },
{ "mono", NULL, 0, AV_OPT_TYPE_CONST, { TWOLAME_MONO }, 0, 0, AE, "mode" },
{ "psymodel", "Psychoacoustic Model", OFFSET(psymodel), AV_OPT_TYPE_INT, { 3 }, -1, 4, AE},
{ "energy_levels","enable energy levels", OFFSET(energy), AV_OPT_TYPE_INT, { 0 }, 0, 1, AE},
{ "error_protection","enable CRC error protection", OFFSET(error_protection), AV_OPT_TYPE_INT, { 0 }, 0, 1, AE},
{ "copyright", "set MPEG Audio Copyright flag", OFFSET(copyright), AV_OPT_TYPE_INT, { 0 }, 0, 1, AE},
{ "original", "set MPEG Audio Original flag", OFFSET(original), AV_OPT_TYPE_INT, { 0 }, 0, 1, AE},
{ NULL },
};
static const AVClass libtwolame_class = {
.class_name = "libtwolame encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
AVCodec ff_libtwolame_encoder = {
.name = "libtwolame",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MP3,
.priv_data_size = sizeof(TWOLAMEContext),
.init = twolame_encode_init,
.encode2 = twolame_encode_frame,
.close = twolame_encode_close,
.capabilities = CODEC_CAP_DELAY,
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLT,
AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_S16P,
AV_SAMPLE_FMT_NONE },
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_MONO,
AV_CH_LAYOUT_STEREO,
0 },
.supported_samplerates = (const int[]){ 16000, 22050, 24000, 32000, 44100, 48000, 0 },
.long_name = NULL_IF_CONFIG_SMALL("libtwolame MP2 (MPEG audio layer 2)"),
.priv_class = &libtwolame_class,
};