mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-09-21 05:46:55 +00:00
eab12d072e
This commit permits for the use of the Main profile in encoding. The functionality of that profile will be added in the commits following. By itself, this commit does not alter anything. Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
/*
|
|
* AAC encoder
|
|
* Copyright (C) 2008 Konstantin Shishkov
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVCODEC_AACENC_H
|
|
#define AVCODEC_AACENC_H
|
|
|
|
#include "libavutil/float_dsp.h"
|
|
#include "avcodec.h"
|
|
#include "put_bits.h"
|
|
|
|
#include "aac.h"
|
|
#include "audio_frame_queue.h"
|
|
#include "psymodel.h"
|
|
|
|
#include "lpc.h"
|
|
|
|
typedef enum AACCoder {
|
|
AAC_CODER_FAAC = 0,
|
|
AAC_CODER_ANMR,
|
|
AAC_CODER_TWOLOOP,
|
|
AAC_CODER_FAST,
|
|
|
|
AAC_CODER_NB,
|
|
}AACCoder;
|
|
|
|
typedef struct AACEncOptions {
|
|
int stereo_mode;
|
|
int aac_coder;
|
|
int pns;
|
|
int pred;
|
|
int intensity_stereo;
|
|
} AACEncOptions;
|
|
|
|
struct AACEncContext;
|
|
|
|
typedef struct AACCoefficientsEncoder {
|
|
void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s,
|
|
SingleChannelElement *sce, const float lambda);
|
|
void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce,
|
|
int win, int group_len, const float lambda);
|
|
void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, float *out, int size,
|
|
int scale_idx, int cb, const float lambda, int rtz);
|
|
void (*set_special_band_scalefactors)(struct AACEncContext *s, SingleChannelElement *sce);
|
|
void (*search_for_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);
|
|
void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe);
|
|
void (*search_for_is)(struct AACEncContext *s, AVCodecContext *avctx, ChannelElement *cpe);
|
|
} AACCoefficientsEncoder;
|
|
|
|
extern AACCoefficientsEncoder ff_aac_coders[];
|
|
|
|
/**
|
|
* AAC encoder context
|
|
*/
|
|
typedef struct AACEncContext {
|
|
AVClass *av_class;
|
|
AACEncOptions options; ///< encoding options
|
|
PutBitContext pb;
|
|
FFTContext mdct1024; ///< long (1024 samples) frame transform context
|
|
FFTContext mdct128; ///< short (128 samples) frame transform context
|
|
AVFloatDSPContext *fdsp;
|
|
float *planar_samples[6]; ///< saved preprocessed input
|
|
|
|
int profile; ///< copied from avctx
|
|
LPCContext lpc; ///< used by TNS
|
|
int samplerate_index; ///< MPEG-4 samplerate index
|
|
int channels; ///< channel count
|
|
const uint8_t *chan_map; ///< channel configuration map
|
|
|
|
ChannelElement *cpe; ///< channel elements
|
|
FFPsyContext psy;
|
|
struct FFPsyPreprocessContext* psypp;
|
|
AACCoefficientsEncoder *coder;
|
|
int cur_channel;
|
|
int last_frame;
|
|
float lambda;
|
|
AudioFrameQueue afq;
|
|
DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients
|
|
DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients
|
|
|
|
struct {
|
|
float *samples;
|
|
} buffer;
|
|
} AACEncContext;
|
|
|
|
void ff_aac_coder_init_mips(AACEncContext *c);
|
|
|
|
#endif /* AVCODEC_AACENC_H */
|