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c3c646a868
Japanese DTV uses some non standard extensions in AAC audio. One example is 'dual mono', which combines two independent audio into one stereo stream, storing them in left and right channels respectively. Historically, dual mono audio has been used for multi-lingual audio, one for local/native language, and another for english, and usually the "main" (local language) channel should be output without any user interactions. The frames of those dual mono audio are allowed to set ADTS channel_config field to 0, and just contain two SCE's *WITHOUT* PCE, which is a non standard extension by Japanese DTV standard. (ref. ARIB STD-B32 PartII 5.2.3) This patch adds an AVPacket side data, AV_PKT_DATA_JP_DUALMONO, which indicates that the AVPacket is likely to contain an audio frame with the above dual mono extension, and has the parameter to specify the desired channel selection in that case. It also makes aacdec to detect dual mono and output just the desired channel when this side data is attached. Signed-off-by: Akihiro Tsukada <atsukada@users.sourceforge.net> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/*
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VERSION_H
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#define AVCODEC_VERSION_H
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/**
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* @file
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* @ingroup libavc
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* Libavcodec version macros.
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*/
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#define LIBAVCODEC_VERSION_MAJOR 54
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#define LIBAVCODEC_VERSION_MINOR 56
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#define LIBAVCODEC_VERSION_MICRO 100
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#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
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LIBAVCODEC_VERSION_MINOR, \
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LIBAVCODEC_VERSION_MICRO)
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#define LIBAVCODEC_VERSION AV_VERSION(LIBAVCODEC_VERSION_MAJOR, \
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LIBAVCODEC_VERSION_MINOR, \
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LIBAVCODEC_VERSION_MICRO)
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#define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT
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#define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
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/**
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* FF_API_* defines may be placed below to indicate public API that will be
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* dropped at a future version bump. The defines themselves are not part of
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* the public API and may change, break or disappear at any time.
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*/
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#ifndef FF_API_REQUEST_CHANNELS
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#define FF_API_REQUEST_CHANNELS (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_ALLOC_CONTEXT
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#define FF_API_ALLOC_CONTEXT (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_AVCODEC_OPEN
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#define FF_API_AVCODEC_OPEN (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_OLD_DECODE_AUDIO
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#define FF_API_OLD_DECODE_AUDIO (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_OLD_TIMECODE
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#define FF_API_OLD_TIMECODE (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_OLD_ENCODE_AUDIO
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#define FF_API_OLD_ENCODE_AUDIO (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_OLD_ENCODE_VIDEO
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#define FF_API_OLD_ENCODE_VIDEO (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_MPV_GLOBAL_OPTS
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#define FF_API_MPV_GLOBAL_OPTS (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_COLOR_TABLE_ID
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#define FF_API_COLOR_TABLE_ID (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_INTER_THRESHOLD
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#define FF_API_INTER_THRESHOLD (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_SUB_ID
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#define FF_API_SUB_ID (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_DSP_MASK
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#define FF_API_DSP_MASK (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_FIND_BEST_PIX_FMT
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#define FF_API_FIND_BEST_PIX_FMT (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_CODEC_ID
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#define FF_API_CODEC_ID (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#ifndef FF_API_VDA_ASYNC
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#define FF_API_VDA_ASYNC (LIBAVCODEC_VERSION_MAJOR < 55)
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#endif
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#endif /* AVCODEC_VERSION_H */
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