mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
ee77140afa
* commit 'b2bed9325dbd6be0da1d91ffed3f513c40274fd2': cosmetics: Group .name and .long_name together in codec/format declarations Conflicts: libavcodec/8svx.c libavcodec/alac.c libavcodec/cljr.c libavcodec/dnxhddec.c libavcodec/dnxhdenc.c libavcodec/dpxenc.c libavcodec/dvdec.c libavcodec/dvdsubdec.c libavcodec/dvdsubenc.c libavcodec/ffv1dec.c libavcodec/flacdec.c libavcodec/flvdec.c libavcodec/fraps.c libavcodec/frwu.c libavcodec/g726.c libavcodec/gif.c libavcodec/gifdec.c libavcodec/h261dec.c libavcodec/h263dec.c libavcodec/iff.c libavcodec/imc.c libavcodec/libopencore-amr.c libavcodec/libopenjpegdec.c libavcodec/libopenjpegenc.c libavcodec/libspeexenc.c libavcodec/libvo-amrwbenc.c libavcodec/libvorbisenc.c libavcodec/libvpxenc.c libavcodec/libx264.c libavcodec/libxavs.c libavcodec/libxvid.c libavcodec/ljpegenc.c libavcodec/mjpegbdec.c libavcodec/mjpegdec.c libavcodec/mpeg12dec.c libavcodec/mpeg4videodec.c libavcodec/msmpeg4dec.c libavcodec/pgssubdec.c libavcodec/pngdec.c libavcodec/pngenc.c libavcodec/proresdec_lgpl.c libavcodec/proresenc_kostya.c libavcodec/ra144enc.c libavcodec/rawdec.c libavcodec/rv10.c libavcodec/sp5xdec.c libavcodec/takdec.c libavcodec/tta.c libavcodec/v210dec.c libavcodec/vp6.c libavcodec/wavpack.c libavcodec/xbmenc.c libavcodec/yop.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
249 lines
7.8 KiB
C
249 lines
7.8 KiB
C
/*
|
|
* Interface to libfaac for aac encoding
|
|
* Copyright (c) 2002 Gildas Bazin <gbazin@netcourrier.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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 & 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 & 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 + FF_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)) {
|
|
int i;
|
|
for (i = avctx->bit_rate/1000; i ; i--) {
|
|
faac_cfg->bitRate = 1000*i / avctx->channels;
|
|
if (faacEncSetConfiguration(s->faac_handle, faac_cfg))
|
|
break;
|
|
}
|
|
if (!i) {
|
|
av_log(avctx, AV_LOG_ERROR, "libfaac doesn't support this output format!\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto error;
|
|
} else {
|
|
avctx->bit_rate = 1000*i;
|
|
av_log(avctx, AV_LOG_WARNING, "libfaac doesn't support the specified bitrate, using %dkbit/s instead\n", i);
|
|
}
|
|
}
|
|
|
|
avctx->delay = 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_packet2(avctx, avpkt, (7 + 768) * avctx->channels)) < 0)
|
|
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 = CODEC_CAP_SMALL_LAST_FRAME | 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,
|
|
};
|