mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-22 07:20:45 +00:00
721be99371
* qatar/master: cosmetics: fix some then/than typos doxygen: Include libavcodec and libavformat examples into the documentation avutil: elaborate documentation for av_get_random_seed Add support for aac streams in mp4/mov without extradata. aes: whitespace cosmetics adler32: whitespace cosmetics swscale: fix another yuv range conversion overflow in 16bit scaling. Fix cpu flags test program opt-test: Add missing braces to silence compiler warnings. build: Eliminate obsolete test targets. udp: Fix a compilation warning swscale: Unbreak build with --enable-small base64: add fate test aes: improve test program and add fate test adler32: make test program more useful and add fate test swscale: fix yuv range correction when using 16-bit scaling. aacenc: Make chan_map const correct Conflicts: Makefile doc/examples/muxing-example.c libavformat/udp.c libavutil/random_seed.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
78 lines
2.8 KiB
C
78 lines
2.8 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 "avcodec.h"
|
|
#include "put_bits.h"
|
|
#include "dsputil.h"
|
|
|
|
#include "aac.h"
|
|
|
|
#include "psymodel.h"
|
|
|
|
typedef struct AACEncOptions {
|
|
int stereo_mode;
|
|
} 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, int size,
|
|
int scale_idx, int cb, const float lambda);
|
|
void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda);
|
|
} 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
|
|
DSPContext dsp;
|
|
int16_t *samples; ///< saved preprocessed input
|
|
|
|
int samplerate_index; ///< MPEG-4 samplerate index
|
|
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;
|
|
DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients
|
|
DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients
|
|
} AACEncContext;
|
|
|
|
#endif /* AVCODEC_AACENC_H */
|