Libav
aacenc.h
Go to the documentation of this file.
1 /*
2  * AAC encoder
3  * Copyright (C) 2008 Konstantin Shishkov
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_AACENC_H
23 #define AVCODEC_AACENC_H
24 
25 #include "libavutil/float_dsp.h"
26 #include "avcodec.h"
27 #include "put_bits.h"
28 
29 #include "aac.h"
30 #include "audio_frame_queue.h"
31 #include "psymodel.h"
32 
33 typedef struct AACEncOptions {
36 
37 struct AACEncContext;
38 
39 typedef struct AACCoefficientsEncoder {
41  SingleChannelElement *sce, const float lambda);
43  int win, int group_len, const float lambda);
44  void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, int size,
45  int scale_idx, int cb, const float lambda);
46  void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda);
48 
50 
54 typedef struct AACEncContext {
61  float *planar_samples[6];
62 
64  int channels;
65  const uint8_t *chan_map;
66 
73  float lambda;
75  DECLARE_ALIGNED(16, int, qcoefs)[96];
76  DECLARE_ALIGNED(32, float, scoefs)[1024];
77 
78  struct {
79  float *samples;
80  } buffer;
82 
83 extern float ff_aac_pow34sf_tab[428];
84 
85 #endif /* AVCODEC_AACENC_H */