2011-09-26 02:28:21 +02:00
|
|
|
/*
|
|
|
|
* Interface to libaacplus for aac+ (sbr+ps) encoding
|
|
|
|
* Copyright (c) 2010 tipok <piratfm@gmail.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 libaacplus for aac+ (sbr+ps) encoding.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <aacplus.h>
|
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
#include "avcodec.h"
|
|
|
|
#include "internal.h"
|
|
|
|
|
2011-09-26 02:28:21 +02:00
|
|
|
typedef struct aacPlusAudioContext {
|
|
|
|
aacplusEncHandle aacplus_handle;
|
2012-03-24 18:41:55 +01:00
|
|
|
unsigned long max_output_bytes;
|
|
|
|
unsigned long samples_input;
|
2011-09-26 02:28:21 +02:00
|
|
|
} aacPlusAudioContext;
|
|
|
|
|
|
|
|
static av_cold int aacPlus_encode_init(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
aacPlusAudioContext *s = avctx->priv_data;
|
|
|
|
aacplusEncConfiguration *aacplus_cfg;
|
|
|
|
|
|
|
|
/* number of channels */
|
|
|
|
if (avctx->channels < 1 || avctx->channels > 2) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "encoding %d channel(s) is not allowed\n", avctx->channels);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
s->aacplus_handle = aacplusEncOpen(avctx->sample_rate, avctx->channels,
|
|
|
|
&s->samples_input, &s->max_output_bytes);
|
2011-09-26 02:28:21 +02:00
|
|
|
if(!s->aacplus_handle) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "can't open encoder\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* check aacplus version */
|
|
|
|
aacplus_cfg = aacplusEncGetCurrentConfiguration(s->aacplus_handle);
|
|
|
|
|
|
|
|
/* put the options in the configuration struct */
|
|
|
|
if(avctx->profile != FF_PROFILE_AAC_LOW && avctx->profile != FF_PROFILE_UNKNOWN) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid AAC profile: %d, only LC supported\n", avctx->profile);
|
|
|
|
aacplusEncClose(s->aacplus_handle);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
aacplus_cfg->bitRate = avctx->bit_rate;
|
|
|
|
aacplus_cfg->bandWidth = avctx->cutoff;
|
2011-11-24 13:53:19 +01:00
|
|
|
aacplus_cfg->outputFormat = !(avctx->flags & CODEC_FLAG_GLOBAL_HEADER);
|
2011-09-26 02:28:21 +02:00
|
|
|
aacplus_cfg->inputFormat = AACPLUS_INPUT_16BIT;
|
|
|
|
if (!aacplusEncSetConfiguration(s->aacplus_handle, aacplus_cfg)) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "libaacplus doesn't support this output format!\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
avctx->frame_size = s->samples_input / avctx->channels;
|
2011-09-26 02:28:21 +02:00
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
#if FF_API_OLD_ENCODE_AUDIO
|
2011-09-26 02:28:21 +02:00
|
|
|
avctx->coded_frame= avcodec_alloc_frame();
|
|
|
|
avctx->coded_frame->key_frame= 1;
|
2012-03-24 18:41:55 +01:00
|
|
|
#endif
|
2011-09-26 02:28:21 +02:00
|
|
|
|
|
|
|
/* 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 (aacplusEncGetDecoderSpecificInfo(s->aacplus_handle, &buffer,
|
|
|
|
&decoder_specific_info_size) == 1) {
|
|
|
|
avctx->extradata = av_malloc(decoder_specific_info_size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
|
|
avctx->extradata_size = decoder_specific_info_size;
|
|
|
|
memcpy(avctx->extradata, buffer, avctx->extradata_size);
|
|
|
|
}
|
|
|
|
#undef free
|
|
|
|
free(buffer);
|
|
|
|
#define free please_use_av_free
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
static int aacPlus_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
|
|
const AVFrame *frame, int *got_packet)
|
2011-09-26 02:28:21 +02:00
|
|
|
{
|
|
|
|
aacPlusAudioContext *s = avctx->priv_data;
|
2012-03-24 18:41:55 +01:00
|
|
|
int32_t *input_buffer = (int32_t *)frame->data[0];
|
|
|
|
int ret;
|
2011-09-26 02:28:21 +02:00
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
if ((ret = ff_alloc_packet2(avctx, pkt, s->max_output_bytes)))
|
|
|
|
return ret;
|
2011-09-26 02:28:21 +02:00
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
pkt->size = aacplusEncEncode(s->aacplus_handle, input_buffer,
|
|
|
|
s->samples_input, pkt->data, pkt->size);
|
|
|
|
*got_packet = 1;
|
|
|
|
pkt->pts = frame->pts;
|
|
|
|
return 0;
|
2011-09-26 02:28:21 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static av_cold int aacPlus_encode_close(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
aacPlusAudioContext *s = avctx->priv_data;
|
|
|
|
|
2012-03-24 18:41:55 +01:00
|
|
|
#if FF_API_OLD_ENCODE_AUDIO
|
2011-09-26 02:28:21 +02:00
|
|
|
av_freep(&avctx->coded_frame);
|
2012-03-24 18:41:55 +01:00
|
|
|
#endif
|
2011-09-26 02:28:21 +02:00
|
|
|
av_freep(&avctx->extradata);
|
|
|
|
|
|
|
|
aacplusEncClose(s->aacplus_handle);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVCodec ff_libaacplus_encoder = {
|
2011-12-30 20:00:53 +01:00
|
|
|
.name = "libaacplus",
|
|
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
|
|
.id = CODEC_ID_AAC,
|
|
|
|
.priv_data_size = sizeof(aacPlusAudioContext),
|
|
|
|
.init = aacPlus_encode_init,
|
2012-03-24 18:41:55 +01:00
|
|
|
.encode2 = aacPlus_encode_frame,
|
2011-12-30 20:00:53 +01:00
|
|
|
.close = aacPlus_encode_close,
|
2012-06-12 22:41:18 +02:00
|
|
|
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
|
|
|
|
AV_SAMPLE_FMT_NONE },
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("libaacplus AAC+ (Advanced Audio Codec with SBR+PS)"),
|
2011-09-26 02:28:21 +02:00
|
|
|
};
|