3 * Copyright (C) 2008 Konstantin Shishkov
5 * This file is part of Libav.
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.
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.
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
22 #ifndef AVCODEC_AACENC_H
23 #define AVCODEC_AACENC_H
25 #include "libavutil/float_dsp.h"
31 #include "audio_frame_queue.h"
34 typedef struct AACEncOptions
{
40 typedef struct AACCoefficientsEncoder
{
41 void (*search_for_quantizers
)(AVCodecContext
*avctx
, struct AACEncContext
*s
,
42 SingleChannelElement
*sce
, const float lambda
);
43 void (*encode_window_bands_info
)(struct AACEncContext
*s
, SingleChannelElement
*sce
,
44 int win
, int group_len
, const float lambda
);
45 void (*quantize_and_encode_band
)(struct AACEncContext
*s
, PutBitContext
*pb
, const float *in
, int size
,
46 int scale_idx
, int cb
, const float lambda
);
47 void (*search_for_ms
)(struct AACEncContext
*s
, ChannelElement
*cpe
, const float lambda
);
48 } AACCoefficientsEncoder
;
50 extern AACCoefficientsEncoder ff_aac_coders
[];
55 typedef struct AACEncContext
{
57 AACEncOptions options
; ///< encoding options
59 FFTContext mdct1024
; ///< long (1024 samples) frame transform context
60 FFTContext mdct128
; ///< short (128 samples) frame transform context
61 AVFloatDSPContext fdsp
;
62 float *planar_samples
[6]; ///< saved preprocessed input
64 int samplerate_index
; ///< MPEG-4 samplerate index
65 int channels
; ///< channel count
66 const uint8_t *chan_map
; ///< channel configuration map
68 ChannelElement
*cpe
; ///< channel elements
70 struct FFPsyPreprocessContext
* psypp
;
71 AACCoefficientsEncoder
*coder
;
76 DECLARE_ALIGNED(16, int, qcoefs
)[96]; ///< quantized coefficients
77 DECLARE_ALIGNED(32, float, scoefs
)[1024]; ///< scaled coefficients
84 extern float ff_aac_pow34sf_tab
[428];
86 #endif /* AVCODEC_AACENC_H */