diff options
author | Martin Storsjö <martin@martin.st> | 2012-06-16 00:42:13 +0300 |
---|---|---|
committer | Martin Storsjö <martin@martin.st> | 2012-06-18 22:00:35 +0300 |
commit | 3641b0489ce8517ae4ce75ea43c1445b6d1ad2f2 (patch) | |
tree | c27059ecbf8de8dccab3901bdbe93cfb42b44913 | |
parent | 46743a859ceb6b6bf4f0b1cbe26e5b311ed9eef4 (diff) | |
download | ffmpeg-3641b0489ce8517ae4ce75ea43c1445b6d1ad2f2.tar.gz |
Add support for iLBC decoding/encoding via the external library libilbc
The library is 3-clause BSD licensed.
Signed-off-by: Martin Storsjö <martin@martin.st>
-rw-r--r-- | Changelog | 1 | ||||
-rwxr-xr-x | configure | 6 | ||||
-rw-r--r-- | doc/general.texi | 13 | ||||
-rw-r--r-- | libavcodec/Makefile | 2 | ||||
-rw-r--r-- | libavcodec/allcodecs.c | 1 | ||||
-rw-r--r-- | libavcodec/avcodec.h | 1 | ||||
-rw-r--r-- | libavcodec/libilbc.c | 209 | ||||
-rw-r--r-- | libavcodec/utils.c | 5 | ||||
-rw-r--r-- | libavcodec/version.h | 2 |
9 files changed, 239 insertions, 1 deletions
@@ -26,6 +26,7 @@ version <next>: - Indeo Audio decoder - channelsplit audio filter - RTMPT protocol support +- iLBC encoding/decoding via libilbc version 0.8: @@ -172,6 +172,7 @@ External library support: --enable-libfaac enable FAAC support via libfaac [no] --enable-libfreetype enable libfreetype [no] --enable-libgsm enable GSM support via libgsm [no] + --enable-libilbc enable iLBC de/encoding via libilbc [no] --enable-libmp3lame enable MP3 encoding via libmp3lame [no] --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no] --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no] @@ -945,6 +946,7 @@ CONFIG_LIST=" libfaac libfreetype libgsm + libilbc libmp3lame libopencore_amrnb libopencore_amrwb @@ -1427,6 +1429,8 @@ libgsm_decoder_deps="libgsm" libgsm_encoder_deps="libgsm" libgsm_ms_decoder_deps="libgsm" libgsm_ms_encoder_deps="libgsm" +libilbc_decoder_deps="libilbc" +libilbc_encoder_deps="libilbc" libmp3lame_encoder_deps="libmp3lame" libopencore_amrnb_decoder_deps="libopencore_amrnb" libopencore_amrnb_encoder_deps="libopencore_amrnb" @@ -2917,6 +2921,7 @@ enabled gnutls && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_in enabled libfaac && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType enabled libgsm && require libgsm gsm/gsm.h gsm_create -lgsm +enabled libilbc && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc enabled libmp3lame && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb @@ -3206,6 +3211,7 @@ echo "libcdio support ${libcdio-no}" echo "libdc1394 support ${libdc1394-no}" echo "libfaac enabled ${libfaac-no}" echo "libgsm enabled ${libgsm-no}" +echo "libilbc enabled ${libilbc-no}" echo "libmp3lame enabled ${libmp3lame-no}" echo "libopencore-amrnb support ${libopencore_amrnb-no}" echo "libopencore-amrwb support ${libopencore_amrwb-no}" diff --git a/doc/general.texi b/doc/general.texi index 9a4746a570..0c600ce948 100644 --- a/doc/general.texi +++ b/doc/general.texi @@ -85,6 +85,17 @@ x264 is under the GNU Public License Version 2 or later details), you must upgrade Libav's license to GPL in order to use it. @end float +@section libilbc + +iLBC is a narrowband speech codec that has been made freely available +by Google as part of the WebRTC project. libilbc is a packaging friendly +copy of the iLBC codec. Libav can make use of the libilbc library for +iLBC encoding and decoding. + +Go to @url{https://github.com/dekkers/libilbc} and follow the instructions for +installing the library. Then pass @code{--enable-libilbc} to configure to +enable it. + @chapter Supported File Formats and Codecs @@ -707,6 +718,8 @@ following image formats are supported: @item GSM Microsoft variant @tab E @tab X @tab encoding supported through external library libgsm @item IAC (Indeo Audio Coder) @tab @tab X +@item iLBC (Internet Low Bitrate Codec) @tab E @tab E + @tab encoding and decoding supported through external library libilbc @item IMC (Intel Music Coder) @tab @tab X @item MACE (Macintosh Audio Compression/Expansion) 3:1 @tab @tab X @item MACE (Macintosh Audio Compression/Expansion) 6:1 @tab @tab X diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 3bfd78bc63..c4f7e986fa 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -596,6 +596,8 @@ OBJS-$(CONFIG_LIBGSM_DECODER) += libgsm.o OBJS-$(CONFIG_LIBGSM_ENCODER) += libgsm.o OBJS-$(CONFIG_LIBGSM_MS_DECODER) += libgsm.o OBJS-$(CONFIG_LIBGSM_MS_ENCODER) += libgsm.o +OBJS-$(CONFIG_LIBILBC_DECODER) += libilbc.o +OBJS-$(CONFIG_LIBILBC_ENCODER) += libilbc.o OBJS-$(CONFIG_LIBMP3LAME_ENCODER) += libmp3lame.o mpegaudiodecheader.o \ audio_frame_queue.o OBJS-$(CONFIG_LIBOPENCORE_AMRNB_DECODER) += libopencore-amr.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 01d13d5348..a9d85e694f 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -379,6 +379,7 @@ void avcodec_register_all(void) REGISTER_ENCODER (LIBFAAC, libfaac); REGISTER_ENCDEC (LIBGSM, libgsm); REGISTER_ENCDEC (LIBGSM_MS, libgsm_ms); + REGISTER_ENCDEC (LIBILBC, libilbc); REGISTER_ENCODER (LIBMP3LAME, libmp3lame); REGISTER_ENCDEC (LIBOPENCORE_AMRNB, libopencore_amrnb); REGISTER_DECODER (LIBOPENCORE_AMRWB, libopencore_amrwb); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 4a07d6dd57..94c2ed7655 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -394,6 +394,7 @@ enum CodecID { CODEC_ID_BMV_AUDIO, CODEC_ID_RALF, CODEC_ID_IAC, + CODEC_ID_ILBC, /* subtitle codecs */ CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs. diff --git a/libavcodec/libilbc.c b/libavcodec/libilbc.c new file mode 100644 index 0000000000..1c056d5cd7 --- /dev/null +++ b/libavcodec/libilbc.c @@ -0,0 +1,209 @@ +/* + * iLBC decoder/encoder stub + * Copyright (c) 2012 Martin Storsjo + * + * 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 <ilbc.h> + +#include "avcodec.h" +#include "libavutil/opt.h" +#include "internal.h" + +static int get_mode(AVCodecContext *avctx) +{ + if (avctx->block_align == 38) + return 20; + else if (avctx->block_align == 50) + return 30; + else if (avctx->bit_rate > 0) + return avctx->bit_rate <= 14000 ? 30 : 20; + else + return -1; +} + +typedef struct ILBCDecContext { + const AVClass *class; + AVFrame frame; + iLBC_Dec_Inst_t decoder; + int enhance; +} ILBCDecContext; + +static const AVOption ilbc_dec_options[] = { + { "enhance", "Enhance the decoded audio (adds delay)", offsetof(ILBCDecContext, enhance), AV_OPT_TYPE_INT, { 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM }, + { NULL } +}; + +static const AVClass ilbc_dec_class = { + "libilbc", av_default_item_name, ilbc_dec_options, LIBAVUTIL_VERSION_INT +}; + +static av_cold int ilbc_decode_init(AVCodecContext *avctx) +{ + ILBCDecContext *s = avctx->priv_data; + int mode; + + if ((mode = get_mode(avctx)) < 0) { + av_log(avctx, AV_LOG_ERROR, "iLBC frame mode not indicated\n"); + return AVERROR(EINVAL); + } + + WebRtcIlbcfix_InitDecode(&s->decoder, mode, s->enhance); + avcodec_get_frame_defaults(&s->frame); + avctx->coded_frame = &s->frame; + + avctx->channels = 1; + avctx->sample_rate = 8000; + avctx->sample_fmt = AV_SAMPLE_FMT_S16; + + return 0; +} + +static int ilbc_decode_frame(AVCodecContext *avctx, void *data, + int *got_frame_ptr, AVPacket *avpkt) +{ + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + ILBCDecContext *s = avctx->priv_data; + int ret; + + if (s->decoder.no_of_bytes > buf_size) { + av_log(avctx, AV_LOG_ERROR, "iLBC frame too short (%u, should be %u)\n", + buf_size, s->decoder.no_of_bytes); + return AVERROR_INVALIDDATA; + } + + s->frame.nb_samples = s->decoder.blockl; + if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return ret; + } + + WebRtcIlbcfix_DecodeImpl((WebRtc_Word16*) s->frame.data[0], + (const WebRtc_UWord16*) buf, &s->decoder, 1); + + *got_frame_ptr = 1; + *(AVFrame *)data = s->frame; + + return s->decoder.no_of_bytes; +} + +AVCodec ff_libilbc_decoder = { + .name = "libilbc", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_ILBC, + .priv_data_size = sizeof(ILBCDecContext), + .init = ilbc_decode_init, + .decode = ilbc_decode_frame, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Internet Low Bitrate Codec (iLBC)"), + .priv_class = &ilbc_dec_class, +}; + +typedef struct ILBCEncContext { + const AVClass *class; + iLBC_Enc_Inst_t encoder; + int mode; +} ILBCEncContext; + +static const AVOption ilbc_enc_options[] = { + { "mode", "iLBC mode (20 or 30 ms frames)", offsetof(ILBCEncContext, mode), AV_OPT_TYPE_INT, { 20 }, 20, 30, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, + { NULL } +}; + +static const AVClass ilbc_enc_class = { + "libilbc", av_default_item_name, ilbc_enc_options, LIBAVUTIL_VERSION_INT +}; + +static av_cold int ilbc_encode_init(AVCodecContext *avctx) +{ + ILBCEncContext *s = avctx->priv_data; + int mode; + + if (avctx->sample_rate != 8000) { + av_log(avctx, AV_LOG_ERROR, "Only 8000Hz sample rate supported\n"); + return AVERROR(EINVAL); + } + + if (avctx->channels != 1) { + av_log(avctx, AV_LOG_ERROR, "Only mono supported\n"); + return AVERROR(EINVAL); + } + + if ((mode = get_mode(avctx)) > 0) + s->mode = mode; + else + s->mode = s->mode != 30 ? 20 : 30; + WebRtcIlbcfix_InitEncode(&s->encoder, s->mode); + + avctx->block_align = s->encoder.no_of_bytes; + avctx->frame_size = s->encoder.blockl; +#if FF_API_OLD_ENCODE_AUDIO + avctx->coded_frame = avcodec_alloc_frame(); + if (!avctx->coded_frame) + return AVERROR(ENOMEM); +#endif + + return 0; +} + +static av_cold int ilbc_encode_close(AVCodecContext *avctx) +{ +#if FF_API_OLD_ENCODE_AUDIO + av_freep(&avctx->coded_frame); +#endif + return 0; +} + +static int ilbc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, + const AVFrame *frame, int *got_packet_ptr) +{ + ILBCEncContext *s = avctx->priv_data; + int ret; + + if ((ret = ff_alloc_packet(avpkt, 50))) { + av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n"); + return ret; + } + + WebRtcIlbcfix_EncodeImpl((WebRtc_UWord16*) avpkt->data, (const WebRtc_Word16*) frame->data[0], &s->encoder); + + avpkt->size = s->encoder.no_of_bytes; + *got_packet_ptr = 1; + return 0; +} + +static const AVCodecDefault ilbc_encode_defaults[] = { + { "b", "0" }, + { NULL } +}; + +AVCodec ff_libilbc_encoder = { + .name = "libilbc", + .type = AVMEDIA_TYPE_AUDIO, + .id = CODEC_ID_ILBC, + .priv_data_size = sizeof(ILBCEncContext), + .init = ilbc_encode_init, + .encode2 = ilbc_encode_frame, + .close = ilbc_encode_close, + .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, + AV_SAMPLE_FMT_NONE }, + .long_name = NULL_IF_CONFIG_SMALL("Internet Low Bitrate Codec (iLBC)"), + .defaults = ilbc_encode_defaults, + .priv_class = &ilbc_enc_class, +}; diff --git a/libavcodec/utils.c b/libavcodec/utils.c index d2ee9f893b..514a1f5569 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -1832,6 +1832,11 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes) case 29: return 288; case 37: return 480; } + } else if (id == CODEC_ID_ILBC) { + switch (ba) { + case 38: return 160; + case 50: return 240; + } } } diff --git a/libavcodec/version.h b/libavcodec/version.h index e8f0b5cb84..46b0f2358d 100644 --- a/libavcodec/version.h +++ b/libavcodec/version.h @@ -27,7 +27,7 @@ */ #define LIBAVCODEC_VERSION_MAJOR 54 -#define LIBAVCODEC_VERSION_MINOR 14 +#define LIBAVCODEC_VERSION_MINOR 15 #define LIBAVCODEC_VERSION_MICRO 0 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ |