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0971fcf0a0
The aim of this is twofold: a) Clang warns when setting a deprecated
field in a definition and because several of the widely set
AVCodec fields are deprecated, one gets several hundred warnings
from Clang for an ordinary build. Yet fortunately Clang (unlike GCC)
allows to disable deprecation warnings inside a definition, so
that one can create simple macros to set these fields that also suppress
deprecation warnings for Clang. This has already been done in
fdff1b9cbf for AVCodec.channel_layouts.
b) Using macros will allow to easily migrate these fields to internal ones.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
103 lines
4.4 KiB
C
103 lines
4.4 KiB
C
/*
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* AC-3 Audio Decoder
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* This code was developed as part of Google Summer of Code 2006.
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* E-AC-3 support was added as part of Google Summer of Code 2007.
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*
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* Copyright (c) 2006 Kartikey Mahendra BHATT (bhattkm at gmail dot com)
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* Copyright (c) 2007-2008 Bartlomiej Wolowiec <bartek.wolowiec@gmail.com>
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* Copyright (c) 2007 Justin Ruggles <justin.ruggles@gmail.com>
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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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/**
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* Upmix delay samples from stereo to original channel layout.
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*/
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#include "config_components.h"
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#define IMDCT_TYPE AV_TX_FLOAT_MDCT
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#include "ac3dec.h"
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#include "codec_internal.h"
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#include "profiles.h"
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#if CONFIG_EAC3_DECODER
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#include "eac3dec.c"
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#endif
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#include "ac3dec.c"
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#define EXPORT (AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY)
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static const AVOption options[] = {
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{ "cons_noisegen", "enable consistent noise generation", OFFSET(consistent_noise_generation), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, PAR },
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{ "drc_scale", "percentage of dynamic range compression to apply", OFFSET(drc_scale), AV_OPT_TYPE_FLOAT, {.dbl = 1.0}, 0.0, 6.0, PAR },
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{ "heavy_compr", "enable heavy dynamic range compression", OFFSET(heavy_compression), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, PAR },
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{ "target_level", "target level in -dBFS (0 not applied)", OFFSET(target_level), AV_OPT_TYPE_INT, {.i64 = 0 }, -31, 0, PAR },
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{"dmix_mode", "Preferred Stereo Downmix Mode", OFFSET(preferred_stereo_downmix), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 3, EXPORT, .unit = "dmix_mode"},
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{"ltrt_cmixlev", "Lt/Rt Center Mix Level", OFFSET(ltrt_center_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
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{"ltrt_surmixlev", "Lt/Rt Surround Mix Level", OFFSET(ltrt_surround_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
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{"loro_cmixlev", "Lo/Ro Center Mix Level", OFFSET(loro_center_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
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{"loro_surmixlev", "Lo/Ro Surround Mix Level", OFFSET(loro_surround_mix_level), AV_OPT_TYPE_FLOAT, {.dbl = -1.0 }, -1.0, 2.0, EXPORT },
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{ "downmix", "Request a specific channel layout from the decoder", OFFSET(downmix_layout), AV_OPT_TYPE_CHLAYOUT, {.str = NULL}, .flags = PAR },
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{ NULL},
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};
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static const AVClass ac3_eac3_decoder_class = {
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.class_name = "(E-)AC3 decoder",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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const FFCodec ff_ac3_decoder = {
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.p.name = "ac3",
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.p.type = AVMEDIA_TYPE_AUDIO,
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.p.id = AV_CODEC_ID_AC3,
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.priv_data_size = sizeof (AC3DecodeContext),
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.init = ac3_decode_init,
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.flush = ac3_decode_flush,
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.close = ac3_decode_end,
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FF_CODEC_DECODE_CB(ac3_decode_frame),
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.p.capabilities = AV_CODEC_CAP_CHANNEL_CONF |
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AV_CODEC_CAP_DR1,
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CODEC_LONG_NAME("ATSC A/52A (AC-3)"),
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CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP),
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.p.priv_class = &ac3_eac3_decoder_class,
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.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
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};
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#if CONFIG_EAC3_DECODER
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const FFCodec ff_eac3_decoder = {
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.p.name = "eac3",
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.p.type = AVMEDIA_TYPE_AUDIO,
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.p.id = AV_CODEC_ID_EAC3,
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.priv_data_size = sizeof (AC3DecodeContext),
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.init = ac3_decode_init,
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.flush = ac3_decode_flush,
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.close = ac3_decode_end,
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FF_CODEC_DECODE_CB(ac3_decode_frame),
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.p.capabilities = AV_CODEC_CAP_CHANNEL_CONF |
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AV_CODEC_CAP_DR1,
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CODEC_LONG_NAME("ATSC A/52B (AC-3, E-AC-3)"),
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CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP),
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.p.priv_class = &ac3_eac3_decoder_class,
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.p.profiles = NULL_IF_CONFIG_SMALL(ff_eac3_profiles),
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.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
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};
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#endif
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