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https://git.ffmpeg.org/ffmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
491 lines
18 KiB
C
491 lines
18 KiB
C
/*
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* AAC decoder wrapper
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* Copyright (c) 2012 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <fdk-aac/aacdecoder_lib.h>
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#include "libavutil/channel_layout.h"
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#include "libavutil/common.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "codec_internal.h"
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#include "decode.h"
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#ifdef AACDECODER_LIB_VL0
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#define FDKDEC_VER_AT_LEAST(vl0, vl1) \
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((AACDECODER_LIB_VL0 > vl0) || \
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(AACDECODER_LIB_VL0 == vl0 && AACDECODER_LIB_VL1 >= vl1))
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#else
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#define FDKDEC_VER_AT_LEAST(vl0, vl1) 0
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#endif
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#if !FDKDEC_VER_AT_LEAST(2, 5) // < 2.5.10
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#define AAC_PCM_MAX_OUTPUT_CHANNELS AAC_PCM_OUTPUT_CHANNELS
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#endif
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enum ConcealMethod {
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CONCEAL_METHOD_SPECTRAL_MUTING = 0,
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CONCEAL_METHOD_NOISE_SUBSTITUTION = 1,
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CONCEAL_METHOD_ENERGY_INTERPOLATION = 2,
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CONCEAL_METHOD_NB,
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};
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typedef struct FDKAACDecContext {
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const AVClass *class;
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HANDLE_AACDECODER handle;
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uint8_t *decoder_buffer;
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int decoder_buffer_size;
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uint8_t *anc_buffer;
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int conceal_method;
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int drc_level;
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int drc_boost;
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int drc_heavy;
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int drc_effect;
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int drc_cut;
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int album_mode;
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int level_limit;
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#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
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int output_delay_set;
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int flush_samples;
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int delay_samples;
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#endif
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AVChannelLayout downmix_layout;
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} FDKAACDecContext;
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#define DMX_ANC_BUFFSIZE 128
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#define DECODER_MAX_CHANNELS 8
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#define DECODER_BUFFSIZE 2048 * sizeof(INT_PCM)
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#define OFFSET(x) offsetof(FDKAACDecContext, x)
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#define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
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static const AVOption fdk_aac_dec_options[] = {
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{ "conceal", "Error concealment method", OFFSET(conceal_method), AV_OPT_TYPE_INT, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, CONCEAL_METHOD_SPECTRAL_MUTING, CONCEAL_METHOD_NB - 1, AD, .unit = "conceal" },
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{ "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, .unit = "conceal" },
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{ "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, .unit = "conceal" },
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{ "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, .unit = "conceal" },
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{ "drc_boost", "Dynamic Range Control: boost, where [0] is none and [127] is max boost",
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OFFSET(drc_boost), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, .unit = NULL },
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{ "drc_cut", "Dynamic Range Control: attenuation factor, where [0] is none and [127] is max compression",
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OFFSET(drc_cut), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, .unit = NULL },
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{ "drc_level", "Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB, -1 for auto, and -2 for disabled",
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OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -2, 127, AD, .unit = NULL },
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{ "drc_heavy", "Dynamic Range Control: heavy compression, where [1] is on (RF mode) and [0] is off",
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OFFSET(drc_heavy), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, .unit = NULL },
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#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
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{ "level_limit", "Signal level limiting",
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OFFSET(level_limit), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, AD },
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#endif
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#if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0
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{ "drc_effect","Dynamic Range Control: effect type, where e.g. [0] is none and [6] is general",
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OFFSET(drc_effect), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 8, AD, .unit = NULL },
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#endif
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#if FDKDEC_VER_AT_LEAST(3, 1) // 3.1.0
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{ "album_mode","Dynamic Range Control: album mode, where [0] is off and [1] is on",
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OFFSET(album_mode), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, .unit = NULL },
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#endif
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{ "downmix", "Request a specific channel layout from the decoder", OFFSET(downmix_layout), AV_OPT_TYPE_CHLAYOUT, {.str = NULL}, .flags = AD },
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{ NULL }
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};
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static const AVClass fdk_aac_dec_class = {
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.class_name = "libfdk-aac decoder",
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.item_name = av_default_item_name,
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.option = fdk_aac_dec_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static int get_stream_info(AVCodecContext *avctx)
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{
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FDKAACDecContext *s = avctx->priv_data;
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CStreamInfo *info = aacDecoder_GetStreamInfo(s->handle);
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int channel_counts[0x24] = { 0 };
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int i, ch_error = 0;
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uint64_t ch_layout = 0;
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if (!info) {
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av_log(avctx, AV_LOG_ERROR, "Unable to get stream info\n");
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return AVERROR_UNKNOWN;
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}
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if (info->sampleRate <= 0) {
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av_log(avctx, AV_LOG_ERROR, "Stream info not initialized\n");
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return AVERROR_UNKNOWN;
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}
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avctx->sample_rate = info->sampleRate;
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avctx->frame_size = info->frameSize;
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#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
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if (!s->output_delay_set && info->outputDelay) {
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// Set this only once.
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s->flush_samples = info->outputDelay;
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s->delay_samples = info->outputDelay;
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s->output_delay_set = 1;
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}
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#endif
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for (i = 0; i < info->numChannels; i++) {
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AUDIO_CHANNEL_TYPE ctype = info->pChannelType[i];
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if (ctype <= ACT_NONE || ctype >= FF_ARRAY_ELEMS(channel_counts)) {
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av_log(avctx, AV_LOG_WARNING, "unknown channel type\n");
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break;
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}
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channel_counts[ctype]++;
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}
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av_log(avctx, AV_LOG_DEBUG,
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"%d channels - front:%d side:%d back:%d lfe:%d top:%d\n",
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info->numChannels,
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channel_counts[ACT_FRONT], channel_counts[ACT_SIDE],
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channel_counts[ACT_BACK], channel_counts[ACT_LFE],
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channel_counts[ACT_FRONT_TOP] + channel_counts[ACT_SIDE_TOP] +
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channel_counts[ACT_BACK_TOP] + channel_counts[ACT_TOP]);
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switch (channel_counts[ACT_FRONT]) {
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case 4:
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ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_LEFT_OF_CENTER |
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AV_CH_FRONT_RIGHT_OF_CENTER;
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break;
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case 3:
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ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER;
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break;
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case 2:
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ch_layout |= AV_CH_LAYOUT_STEREO;
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break;
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case 1:
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ch_layout |= AV_CH_FRONT_CENTER;
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break;
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default:
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av_log(avctx, AV_LOG_WARNING,
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"unsupported number of front channels: %d\n",
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channel_counts[ACT_FRONT]);
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ch_error = 1;
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break;
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}
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if (channel_counts[ACT_SIDE] > 0) {
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if (channel_counts[ACT_SIDE] == 2) {
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ch_layout |= AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT;
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} else {
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av_log(avctx, AV_LOG_WARNING,
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"unsupported number of side channels: %d\n",
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channel_counts[ACT_SIDE]);
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ch_error = 1;
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}
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}
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if (channel_counts[ACT_BACK] > 0) {
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switch (channel_counts[ACT_BACK]) {
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case 3:
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ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | AV_CH_BACK_CENTER;
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break;
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case 2:
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ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT;
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break;
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case 1:
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ch_layout |= AV_CH_BACK_CENTER;
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break;
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default:
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av_log(avctx, AV_LOG_WARNING,
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"unsupported number of back channels: %d\n",
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channel_counts[ACT_BACK]);
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ch_error = 1;
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break;
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}
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}
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if (channel_counts[ACT_LFE] > 0) {
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if (channel_counts[ACT_LFE] == 1) {
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ch_layout |= AV_CH_LOW_FREQUENCY;
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} else {
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av_log(avctx, AV_LOG_WARNING,
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"unsupported number of LFE channels: %d\n",
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channel_counts[ACT_LFE]);
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ch_error = 1;
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}
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}
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av_channel_layout_uninit(&avctx->ch_layout);
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av_channel_layout_from_mask(&avctx->ch_layout, ch_layout);
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if (!ch_error && avctx->ch_layout.nb_channels != info->numChannels) {
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av_log(avctx, AV_LOG_WARNING, "unsupported channel configuration\n");
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ch_error = 1;
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}
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if (ch_error)
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avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
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return 0;
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}
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static av_cold int fdk_aac_decode_close(AVCodecContext *avctx)
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{
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FDKAACDecContext *s = avctx->priv_data;
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if (s->handle)
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aacDecoder_Close(s->handle);
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av_freep(&s->decoder_buffer);
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av_freep(&s->anc_buffer);
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return 0;
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}
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static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
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{
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FDKAACDecContext *s = avctx->priv_data;
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AAC_DECODER_ERROR err;
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s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
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if (!s->handle) {
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av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
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return AVERROR_UNKNOWN;
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}
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if (avctx->extradata_size) {
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if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata,
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&avctx->extradata_size)) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n");
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return AVERROR_INVALIDDATA;
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}
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}
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if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
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s->conceal_method)) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
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return AVERROR_UNKNOWN;
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}
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if (s->downmix_layout.nb_channels > 0 &&
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s->downmix_layout.order != AV_CHANNEL_ORDER_NATIVE) {
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int downmix_channels = -1;
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switch (s->downmix_layout.u.mask) {
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case AV_CH_LAYOUT_STEREO:
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case AV_CH_LAYOUT_STEREO_DOWNMIX:
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downmix_channels = 2;
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break;
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case AV_CH_LAYOUT_MONO:
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downmix_channels = 1;
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break;
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default:
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av_log(avctx, AV_LOG_WARNING, "Invalid downmix option\n");
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break;
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}
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if (downmix_channels != -1) {
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if (aacDecoder_SetParam(s->handle, AAC_PCM_MAX_OUTPUT_CHANNELS,
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downmix_channels) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_WARNING, "Unable to set output channels in the decoder\n");
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} else {
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s->anc_buffer = av_malloc(DMX_ANC_BUFFSIZE);
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if (!s->anc_buffer) {
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av_log(avctx, AV_LOG_ERROR, "Unable to allocate ancillary buffer for the decoder\n");
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return AVERROR(ENOMEM);
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}
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if (aacDecoder_AncDataInit(s->handle, s->anc_buffer, DMX_ANC_BUFFSIZE)) {
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av_log(avctx, AV_LOG_ERROR, "Unable to register downmix ancillary buffer in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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}
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}
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if (s->drc_boost != -1) {
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if (aacDecoder_SetParam(s->handle, AAC_DRC_BOOST_FACTOR, s->drc_boost) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set DRC boost factor in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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if (s->drc_cut != -1) {
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if (aacDecoder_SetParam(s->handle, AAC_DRC_ATTENUATION_FACTOR, s->drc_cut) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set DRC attenuation factor in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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if (s->drc_level != -1) {
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// This option defaults to -1, i.e. not calling
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// aacDecoder_SetParam(AAC_DRC_REFERENCE_LEVEL) at all, which defaults
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// to the level from DRC metadata, if available. The user can set
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// -drc_level -2, which calls aacDecoder_SetParam(
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// AAC_DRC_REFERENCE_LEVEL) with a negative value, which then
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// explicitly disables the feature.
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if (aacDecoder_SetParam(s->handle, AAC_DRC_REFERENCE_LEVEL, s->drc_level) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set DRC reference level in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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if (s->drc_heavy != -1) {
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if (aacDecoder_SetParam(s->handle, AAC_DRC_HEAVY_COMPRESSION, s->drc_heavy) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set DRC heavy compression in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
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// Setting this parameter to -1 enables the auto behaviour in the library.
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if (aacDecoder_SetParam(s->handle, AAC_PCM_LIMITER_ENABLE, s->level_limit) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set in signal level limiting in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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#endif
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#if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0
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if (s->drc_effect != -1) {
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if (aacDecoder_SetParam(s->handle, AAC_UNIDRC_SET_EFFECT, s->drc_effect) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set DRC effect type in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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#endif
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#if FDKDEC_VER_AT_LEAST(3, 1) // 3.1.0
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if (s->album_mode != -1) {
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if (aacDecoder_SetParam(s->handle, AAC_UNIDRC_ALBUM_MODE, s->album_mode) != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to set album mode in the decoder\n");
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return AVERROR_UNKNOWN;
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}
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}
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#endif
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avctx->sample_fmt = AV_SAMPLE_FMT_S16;
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s->decoder_buffer_size = DECODER_BUFFSIZE * DECODER_MAX_CHANNELS;
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s->decoder_buffer = av_malloc(s->decoder_buffer_size);
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if (!s->decoder_buffer)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int fdk_aac_decode_frame(AVCodecContext *avctx, AVFrame *frame,
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int *got_frame_ptr, AVPacket *avpkt)
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{
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FDKAACDecContext *s = avctx->priv_data;
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int ret;
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AAC_DECODER_ERROR err;
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UINT valid = avpkt->size;
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UINT flags = 0;
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int input_offset = 0;
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if (avpkt->size) {
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err = aacDecoder_Fill(s->handle, &avpkt->data, &avpkt->size, &valid);
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if (err != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR, "aacDecoder_Fill() failed: %x\n", err);
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return AVERROR_INVALIDDATA;
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}
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} else {
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#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
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/* Handle decoder draining */
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if (s->flush_samples > 0) {
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flags |= AACDEC_FLUSH;
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} else {
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return AVERROR_EOF;
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}
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#else
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return AVERROR_EOF;
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#endif
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}
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err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) s->decoder_buffer,
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s->decoder_buffer_size / sizeof(INT_PCM),
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flags);
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if (err == AAC_DEC_NOT_ENOUGH_BITS) {
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ret = avpkt->size - valid;
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goto end;
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}
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if (err != AAC_DEC_OK) {
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av_log(avctx, AV_LOG_ERROR,
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"aacDecoder_DecodeFrame() failed: %x\n", err);
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ret = AVERROR_UNKNOWN;
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goto end;
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}
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if ((ret = get_stream_info(avctx)) < 0)
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goto end;
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frame->nb_samples = avctx->frame_size;
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#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
|
|
if (flags & AACDEC_FLUSH) {
|
|
// Only return the right amount of samples at the end; if calling the
|
|
// decoder with AACDEC_FLUSH, it will keep returning frames indefinitely.
|
|
frame->nb_samples = FFMIN(s->flush_samples, frame->nb_samples);
|
|
av_log(s, AV_LOG_DEBUG, "Returning %d/%d delayed samples.\n",
|
|
frame->nb_samples, s->flush_samples);
|
|
s->flush_samples -= frame->nb_samples;
|
|
} else {
|
|
// Trim off samples from the start to compensate for extra decoder
|
|
// delay. We could also just adjust the pts, but this avoids
|
|
// including the extra samples in the output altogether.
|
|
if (s->delay_samples) {
|
|
int drop_samples = FFMIN(s->delay_samples, frame->nb_samples);
|
|
av_log(s, AV_LOG_DEBUG, "Dropping %d/%d delayed samples.\n",
|
|
drop_samples, s->delay_samples);
|
|
s->delay_samples -= drop_samples;
|
|
frame->nb_samples -= drop_samples;
|
|
input_offset = drop_samples * avctx->ch_layout.nb_channels;
|
|
if (frame->nb_samples <= 0)
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
|
|
goto end;
|
|
|
|
memcpy(frame->extended_data[0], s->decoder_buffer + input_offset,
|
|
avctx->ch_layout.nb_channels * frame->nb_samples *
|
|
av_get_bytes_per_sample(avctx->sample_fmt));
|
|
|
|
*got_frame_ptr = 1;
|
|
ret = avpkt->size - valid;
|
|
|
|
end:
|
|
return ret;
|
|
}
|
|
|
|
static av_cold void fdk_aac_decode_flush(AVCodecContext *avctx)
|
|
{
|
|
FDKAACDecContext *s = avctx->priv_data;
|
|
AAC_DECODER_ERROR err;
|
|
|
|
if (!s->handle)
|
|
return;
|
|
|
|
if ((err = aacDecoder_SetParam(s->handle,
|
|
AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK)
|
|
av_log(avctx, AV_LOG_WARNING, "failed to clear buffer when flushing\n");
|
|
}
|
|
|
|
const FFCodec ff_libfdk_aac_decoder = {
|
|
.p.name = "libfdk_aac",
|
|
CODEC_LONG_NAME("Fraunhofer FDK AAC"),
|
|
.p.type = AVMEDIA_TYPE_AUDIO,
|
|
.p.id = AV_CODEC_ID_AAC,
|
|
.priv_data_size = sizeof(FDKAACDecContext),
|
|
.init = fdk_aac_decode_init,
|
|
FF_CODEC_DECODE_CB(fdk_aac_decode_frame),
|
|
.close = fdk_aac_decode_close,
|
|
.flush = fdk_aac_decode_flush,
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF
|
|
#if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
|
|
| AV_CODEC_CAP_DELAY
|
|
#endif
|
|
,
|
|
.p.priv_class = &fdk_aac_dec_class,
|
|
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
|
|
.p.wrapper_name = "libfdk",
|
|
};
|