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https://github.com/FFmpeg/FFmpeg.git
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b44a242c3d
The latest fdk-aac code drop (from android 5.0) changed the channel layout enums (changing the value of existing enum constants), and renamed the option for downmixing. The failsafe comparison between ctype and FF_ARRAY_ELEMS(channel_counts) can trigger warnings (-Wtautological-constant-out-of-range-compare) when building with the old FDK AAC releases, where it can't be out of range with the enum values used there. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
410 lines
14 KiB
C
410 lines
14 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/opt.h"
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#include "avcodec.h"
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#include "internal.h"
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/* The version macro is introduced the same time as the setting enum was
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* changed, so this check should suffice. */
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#ifndef AACDECODER_LIB_VL0
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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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int initialized;
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uint8_t *decoder_buffer;
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uint8_t *anc_buffer;
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enum ConcealMethod 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_cut;
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} FDKAACDecContext;
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#define DMX_ANC_BUFFSIZE 128
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#define DECODER_MAX_CHANNELS 6
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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, "conceal" },
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{ "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, "conceal" },
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{ "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, "conceal" },
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{ "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, "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, 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, 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",
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OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 127, AD, 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, NULL },
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{ NULL }
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};
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static const AVClass fdk_aac_dec_class = {
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"libfdk-aac decoder", av_default_item_name, fdk_aac_dec_options, 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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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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if (!ch_error &&
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av_get_channel_layout_nb_channels(ch_layout) != 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->channel_layout = 0;
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else
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avctx->channel_layout = ch_layout;
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avctx->channels = info->numChannels;
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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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int ret;
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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 (avctx->request_channel_layout > 0 &&
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avctx->request_channel_layout != AV_CH_LAYOUT_NATIVE) {
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int downmix_channels = -1;
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switch (avctx->request_channel_layout) {
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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 request_channel_layout\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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ret = AVERROR(ENOMEM);
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goto fail;
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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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ret = AVERROR_UNKNOWN;
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goto fail;
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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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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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avctx->sample_fmt = AV_SAMPLE_FMT_S16;
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return 0;
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fail:
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fdk_aac_decode_close(avctx);
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return ret;
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}
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static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data,
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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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AVFrame *frame = 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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uint8_t *buf, *tmpptr = NULL;
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int buf_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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if (s->initialized) {
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frame->nb_samples = avctx->frame_size;
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if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
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return ret;
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if (s->anc_buffer) {
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buf_size = DECODER_BUFFSIZE * DECODER_MAX_CHANNELS;
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buf = s->decoder_buffer;
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} else {
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buf = frame->extended_data[0];
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buf_size = avctx->channels * frame->nb_samples *
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av_get_bytes_per_sample(avctx->sample_fmt);
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}
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} else {
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buf_size = DECODER_BUFFSIZE * DECODER_MAX_CHANNELS;
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if (!s->decoder_buffer)
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s->decoder_buffer = av_malloc(buf_size);
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if (!s->decoder_buffer)
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return AVERROR(ENOMEM);
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buf = tmpptr = s->decoder_buffer;
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}
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err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) buf, buf_size, 0);
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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 (!s->initialized) {
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if ((ret = get_stream_info(avctx)) < 0)
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goto end;
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s->initialized = 1;
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frame->nb_samples = avctx->frame_size;
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}
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if (tmpptr) {
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frame->nb_samples = avctx->frame_size;
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if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
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goto end;
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}
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if (s->decoder_buffer) {
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memcpy(frame->extended_data[0], buf,
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avctx->channels * avctx->frame_size *
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av_get_bytes_per_sample(avctx->sample_fmt));
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if (!s->anc_buffer)
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av_freep(&s->decoder_buffer);
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}
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*got_frame_ptr = 1;
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ret = avpkt->size - valid;
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end:
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return ret;
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}
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static av_cold void fdk_aac_decode_flush(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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if (!s->handle)
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return;
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if ((err = aacDecoder_SetParam(s->handle,
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AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK)
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av_log(avctx, AV_LOG_WARNING, "failed to clear buffer when flushing\n");
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}
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AVCodec ff_libfdk_aac_decoder = {
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.name = "libfdk_aac",
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.long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"),
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.type = AVMEDIA_TYPE_AUDIO,
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.id = AV_CODEC_ID_AAC,
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.priv_data_size = sizeof(FDKAACDecContext),
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.init = fdk_aac_decode_init,
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.decode = fdk_aac_decode_frame,
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.close = fdk_aac_decode_close,
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.flush = fdk_aac_decode_flush,
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.capabilities = CODEC_CAP_DR1 | CODEC_CAP_CHANNEL_CONF,
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.priv_class = &fdk_aac_dec_class,
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};
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