diff options
Diffstat (limited to 'libavcodec/libfaac.c')
-rw-r--r-- | libavcodec/libfaac.c | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/libavcodec/libfaac.c b/libavcodec/libfaac.c deleted file mode 100644 index db04a37..0000000 --- a/libavcodec/libfaac.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * Interface to libfaac for aac encoding - * Copyright (c) 2002 Gildas Bazin <gbazin@netcourrier.com> - * - * This file is part of Libav. - * - * Libav is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * Libav is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Interface to libfaac for aac encoding. - */ - -#include <faac.h> - -#include "libavutil/channel_layout.h" -#include "libavutil/common.h" -#include "avcodec.h" -#include "audio_frame_queue.h" -#include "internal.h" - - -/* libfaac has an encoder delay of 1024 samples */ -#define FAAC_DELAY_SAMPLES 1024 - -typedef struct FaacAudioContext { - faacEncHandle faac_handle; - AudioFrameQueue afq; -} FaacAudioContext; - - -static av_cold int Faac_encode_close(AVCodecContext *avctx) -{ - FaacAudioContext *s = avctx->priv_data; - - av_freep(&avctx->extradata); - ff_af_queue_close(&s->afq); - - if (s->faac_handle) - faacEncClose(s->faac_handle); - - return 0; -} - -static const int channel_maps[][6] = { - { 2, 0, 1 }, //< C L R - { 2, 0, 1, 3 }, //< C L R Cs - { 2, 0, 1, 3, 4 }, //< C L R Ls Rs - { 2, 0, 1, 4, 5, 3 }, //< C L R Ls Rs LFE -}; - -static av_cold int Faac_encode_init(AVCodecContext *avctx) -{ - FaacAudioContext *s = avctx->priv_data; - faacEncConfigurationPtr faac_cfg; - unsigned long samples_input, max_bytes_output; - int ret; - - /* number of channels */ - if (avctx->channels < 1 || avctx->channels > 6) { - av_log(avctx, AV_LOG_ERROR, "encoding %d channel(s) is not allowed\n", avctx->channels); - ret = AVERROR(EINVAL); - goto error; - } - - s->faac_handle = faacEncOpen(avctx->sample_rate, - avctx->channels, - &samples_input, &max_bytes_output); - if (!s->faac_handle) { - av_log(avctx, AV_LOG_ERROR, "error in faacEncOpen()\n"); - ret = AVERROR_UNKNOWN; - goto error; - } - - /* check faac version */ - faac_cfg = faacEncGetCurrentConfiguration(s->faac_handle); - if (faac_cfg->version != FAAC_CFG_VERSION) { - av_log(avctx, AV_LOG_ERROR, "wrong libfaac version (compiled for: %d, using %d)\n", FAAC_CFG_VERSION, faac_cfg->version); - ret = AVERROR(EINVAL); - goto error; - } - - /* put the options in the configuration struct */ - switch(avctx->profile) { - case FF_PROFILE_AAC_MAIN: - faac_cfg->aacObjectType = MAIN; - break; - case FF_PROFILE_UNKNOWN: - case FF_PROFILE_AAC_LOW: - faac_cfg->aacObjectType = LOW; - break; - case FF_PROFILE_AAC_SSR: - faac_cfg->aacObjectType = SSR; - break; - case FF_PROFILE_AAC_LTP: - faac_cfg->aacObjectType = LTP; - break; - default: - av_log(avctx, AV_LOG_ERROR, "invalid AAC profile\n"); - ret = AVERROR(EINVAL); - goto error; - } - faac_cfg->mpegVersion = MPEG4; - faac_cfg->useTns = 0; - faac_cfg->allowMidside = 1; - faac_cfg->bitRate = avctx->bit_rate / avctx->channels; - faac_cfg->bandWidth = avctx->cutoff; - if(avctx->flags & AV_CODEC_FLAG_QSCALE) { - faac_cfg->bitRate = 0; - faac_cfg->quantqual = avctx->global_quality / FF_QP2LAMBDA; - } - faac_cfg->outputFormat = 1; - faac_cfg->inputFormat = FAAC_INPUT_16BIT; - if (avctx->channels > 2) - memcpy(faac_cfg->channel_map, channel_maps[avctx->channels-3], - avctx->channels * sizeof(int)); - - avctx->frame_size = samples_input / avctx->channels; - - /* Set decoder specific info */ - avctx->extradata_size = 0; - if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) { - - unsigned char *buffer = NULL; - unsigned long decoder_specific_info_size; - - if (!faacEncGetDecoderSpecificInfo(s->faac_handle, &buffer, - &decoder_specific_info_size)) { - avctx->extradata = av_malloc(decoder_specific_info_size + AV_INPUT_BUFFER_PADDING_SIZE); - if (!avctx->extradata) { - ret = AVERROR(ENOMEM); - goto error; - } - avctx->extradata_size = decoder_specific_info_size; - memcpy(avctx->extradata, buffer, avctx->extradata_size); - faac_cfg->outputFormat = 0; - } - free(buffer); - } - - if (!faacEncSetConfiguration(s->faac_handle, faac_cfg)) { - av_log(avctx, AV_LOG_ERROR, "libfaac doesn't support this output format!\n"); - ret = AVERROR(EINVAL); - goto error; - } - - avctx->initial_padding = FAAC_DELAY_SAMPLES; - ff_af_queue_init(avctx, &s->afq); - - return 0; -error: - Faac_encode_close(avctx); - return ret; -} - -static int Faac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr) -{ - FaacAudioContext *s = avctx->priv_data; - int bytes_written, ret; - int num_samples = frame ? frame->nb_samples : 0; - void *samples = frame ? frame->data[0] : NULL; - - if ((ret = ff_alloc_packet(avpkt, (7 + 768) * avctx->channels))) { - av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n"); - return ret; - } - - bytes_written = faacEncEncode(s->faac_handle, samples, - num_samples * avctx->channels, - avpkt->data, avpkt->size); - if (bytes_written < 0) { - av_log(avctx, AV_LOG_ERROR, "faacEncEncode() error\n"); - return bytes_written; - } - - /* add current frame to the queue */ - if (frame) { - if ((ret = ff_af_queue_add(&s->afq, frame)) < 0) - return ret; - } - - if (!bytes_written) - return 0; - - /* Get the next frame pts/duration */ - ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts, - &avpkt->duration); - - avpkt->size = bytes_written; - *got_packet_ptr = 1; - return 0; -} - -static const AVProfile profiles[] = { - { FF_PROFILE_AAC_MAIN, "Main" }, - { FF_PROFILE_AAC_LOW, "LC" }, - { FF_PROFILE_AAC_SSR, "SSR" }, - { FF_PROFILE_AAC_LTP, "LTP" }, - { FF_PROFILE_UNKNOWN }, -}; - -static const uint64_t faac_channel_layouts[] = { - AV_CH_LAYOUT_MONO, - AV_CH_LAYOUT_STEREO, - AV_CH_LAYOUT_SURROUND, - AV_CH_LAYOUT_4POINT0, - AV_CH_LAYOUT_5POINT0_BACK, - AV_CH_LAYOUT_5POINT1_BACK, - 0 -}; - -AVCodec ff_libfaac_encoder = { - .name = "libfaac", - .long_name = NULL_IF_CONFIG_SMALL("libfaac AAC (Advanced Audio Coding)"), - .type = AVMEDIA_TYPE_AUDIO, - .id = AV_CODEC_ID_AAC, - .priv_data_size = sizeof(FaacAudioContext), - .init = Faac_encode_init, - .encode2 = Faac_encode_frame, - .close = Faac_encode_close, - .capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY, - .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16, - AV_SAMPLE_FMT_NONE }, - .profiles = NULL_IF_CONFIG_SMALL(profiles), - .channel_layouts = faac_channel_layouts, - .wrapper_name = "libfaac", -}; |