mirror of https://github.com/FFmpeg/FFmpeg.git
There is really no need for two aac wrappers, we already have libfdk-aac which is better. Not to mention that faac doesn't even support HEv1, or HEv2. It's also under a license which is unusable for distribution, so it would only be useful to people who will compile their own ffmpeg, only use it themselves (which at that point should just use fdk-aac). Signed-off-by: Josh de Kock <josh@itanimul.li>pull/231/head
Josh de Kock
8 years ago
committed by
Rostislav Pehlivanov
parent
449f263f9f
commit
dc0f711459
11 changed files with 6 additions and 368 deletions
@ -1,248 +0,0 @@ |
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/*
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* Interface to libfaac for aac encoding |
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* Copyright (c) 2002 Gildas Bazin <gbazin@netcourrier.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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* @file |
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* Interface to libfaac for aac encoding. |
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*/ |
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#include <faac.h> |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/common.h" |
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#include "avcodec.h" |
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#include "audio_frame_queue.h" |
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#include "internal.h" |
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/* libfaac has an encoder delay of 1024 samples */ |
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#define FAAC_DELAY_SAMPLES 1024 |
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typedef struct FaacAudioContext { |
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faacEncHandle faac_handle; |
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AudioFrameQueue afq; |
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} FaacAudioContext; |
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static av_cold int Faac_encode_close(AVCodecContext *avctx) |
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{ |
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FaacAudioContext *s = avctx->priv_data; |
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av_freep(&avctx->extradata); |
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ff_af_queue_close(&s->afq); |
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if (s->faac_handle) |
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faacEncClose(s->faac_handle); |
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return 0; |
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} |
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static const int channel_maps[][6] = { |
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{ 2, 0, 1 }, //< C L R
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{ 2, 0, 1, 3 }, //< C L R Cs
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{ 2, 0, 1, 3, 4 }, //< C L R Ls Rs
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{ 2, 0, 1, 4, 5, 3 }, //< C L R Ls Rs LFE
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}; |
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static av_cold int Faac_encode_init(AVCodecContext *avctx) |
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{ |
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FaacAudioContext *s = avctx->priv_data; |
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faacEncConfigurationPtr faac_cfg; |
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unsigned long samples_input, max_bytes_output; |
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int ret; |
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/* number of channels */ |
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if (avctx->channels < 1 || avctx->channels > 6) { |
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av_log(avctx, AV_LOG_ERROR, "encoding %d channel(s) is not allowed\n", avctx->channels); |
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ret = AVERROR(EINVAL); |
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goto error; |
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} |
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s->faac_handle = faacEncOpen(avctx->sample_rate, |
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avctx->channels, |
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&samples_input, &max_bytes_output); |
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if (!s->faac_handle) { |
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av_log(avctx, AV_LOG_ERROR, "error in faacEncOpen()\n"); |
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ret = AVERROR_UNKNOWN; |
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goto error; |
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} |
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/* check faac version */ |
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faac_cfg = faacEncGetCurrentConfiguration(s->faac_handle); |
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if (faac_cfg->version != FAAC_CFG_VERSION) { |
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av_log(avctx, AV_LOG_ERROR, "wrong libfaac version (compiled for: %d, using %d)\n", FAAC_CFG_VERSION, faac_cfg->version); |
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ret = AVERROR(EINVAL); |
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goto error; |
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} |
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/* put the options in the configuration struct */ |
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switch(avctx->profile) { |
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case FF_PROFILE_AAC_MAIN: |
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faac_cfg->aacObjectType = MAIN; |
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break; |
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case FF_PROFILE_UNKNOWN: |
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case FF_PROFILE_AAC_LOW: |
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faac_cfg->aacObjectType = LOW; |
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break; |
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case FF_PROFILE_AAC_SSR: |
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faac_cfg->aacObjectType = SSR; |
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break; |
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case FF_PROFILE_AAC_LTP: |
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faac_cfg->aacObjectType = LTP; |
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break; |
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default: |
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av_log(avctx, AV_LOG_ERROR, "invalid AAC profile\n"); |
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ret = AVERROR(EINVAL); |
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goto error; |
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} |
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faac_cfg->mpegVersion = MPEG4; |
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faac_cfg->useTns = 0; |
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faac_cfg->allowMidside = 1; |
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faac_cfg->bitRate = avctx->bit_rate / avctx->channels; |
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faac_cfg->bandWidth = avctx->cutoff; |
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if(avctx->flags & AV_CODEC_FLAG_QSCALE) { |
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faac_cfg->bitRate = 0; |
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faac_cfg->quantqual = avctx->global_quality / FF_QP2LAMBDA; |
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} |
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faac_cfg->outputFormat = 1; |
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faac_cfg->inputFormat = FAAC_INPUT_16BIT; |
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if (avctx->channels > 2) |
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memcpy(faac_cfg->channel_map, channel_maps[avctx->channels-3], |
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avctx->channels * sizeof(int)); |
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avctx->frame_size = samples_input / avctx->channels; |
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/* Set decoder specific info */ |
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avctx->extradata_size = 0; |
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if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) { |
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unsigned char *buffer = NULL; |
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unsigned long decoder_specific_info_size; |
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if (!faacEncGetDecoderSpecificInfo(s->faac_handle, &buffer, |
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&decoder_specific_info_size)) { |
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avctx->extradata = av_malloc(decoder_specific_info_size + AV_INPUT_BUFFER_PADDING_SIZE); |
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if (!avctx->extradata) { |
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ret = AVERROR(ENOMEM); |
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goto error; |
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} |
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avctx->extradata_size = decoder_specific_info_size; |
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memcpy(avctx->extradata, buffer, avctx->extradata_size); |
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faac_cfg->outputFormat = 0; |
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} |
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free(buffer); |
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} |
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if (!faacEncSetConfiguration(s->faac_handle, faac_cfg)) { |
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int i; |
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for (i = avctx->bit_rate/1000; i ; i--) { |
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faac_cfg->bitRate = 1000*i / avctx->channels; |
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if (faacEncSetConfiguration(s->faac_handle, faac_cfg)) |
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break; |
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} |
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if (!i) { |
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av_log(avctx, AV_LOG_ERROR, "libfaac doesn't support this output format!\n"); |
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ret = AVERROR(EINVAL); |
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goto error; |
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} else { |
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avctx->bit_rate = 1000*i; |
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av_log(avctx, AV_LOG_WARNING, "libfaac doesn't support the specified bitrate, using %dkbit/s instead\n", i); |
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} |
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} |
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avctx->initial_padding = FAAC_DELAY_SAMPLES; |
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ff_af_queue_init(avctx, &s->afq); |
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return 0; |
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error: |
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Faac_encode_close(avctx); |
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return ret; |
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} |
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static int Faac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, |
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const AVFrame *frame, int *got_packet_ptr) |
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{ |
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FaacAudioContext *s = avctx->priv_data; |
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int bytes_written, ret; |
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int num_samples = frame ? frame->nb_samples : 0; |
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void *samples = frame ? frame->data[0] : NULL; |
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if ((ret = ff_alloc_packet2(avctx, avpkt, (7 + 768) * avctx->channels, 0)) < 0) |
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return ret; |
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bytes_written = faacEncEncode(s->faac_handle, samples, |
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num_samples * avctx->channels, |
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avpkt->data, avpkt->size); |
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if (bytes_written < 0) { |
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av_log(avctx, AV_LOG_ERROR, "faacEncEncode() error\n"); |
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return bytes_written; |
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} |
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/* add current frame to the queue */ |
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if (frame) { |
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if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) |
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return ret; |
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} |
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if (!bytes_written) |
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return 0; |
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/* Get the next frame pts/duration */ |
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ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts, |
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&avpkt->duration); |
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avpkt->size = bytes_written; |
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*got_packet_ptr = 1; |
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return 0; |
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} |
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static const AVProfile profiles[] = { |
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{ FF_PROFILE_AAC_MAIN, "Main" }, |
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{ FF_PROFILE_AAC_LOW, "LC" }, |
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{ FF_PROFILE_AAC_SSR, "SSR" }, |
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{ FF_PROFILE_AAC_LTP, "LTP" }, |
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{ FF_PROFILE_UNKNOWN }, |
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}; |
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static const uint64_t faac_channel_layouts[] = { |
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AV_CH_LAYOUT_MONO, |
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AV_CH_LAYOUT_STEREO, |
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AV_CH_LAYOUT_SURROUND, |
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AV_CH_LAYOUT_4POINT0, |
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AV_CH_LAYOUT_5POINT0_BACK, |
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AV_CH_LAYOUT_5POINT1_BACK, |
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0 |
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}; |
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AVCodec ff_libfaac_encoder = { |
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.name = "libfaac", |
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.long_name = NULL_IF_CONFIG_SMALL("libfaac AAC (Advanced Audio Coding)"), |
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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(FaacAudioContext), |
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.init = Faac_encode_init, |
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.encode2 = Faac_encode_frame, |
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.close = Faac_encode_close, |
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.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY, |
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.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, |
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AV_SAMPLE_FMT_NONE }, |
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.profiles = NULL_IF_CONFIG_SMALL(profiles), |
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.channel_layouts = faac_channel_layouts, |
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}; |
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