3 * Copyright (C) 2008 Konstantin Shishkov
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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"
30 #include "audio_frame_queue.h"
33 typedef enum AACCoder {
42 typedef struct AACEncOptions {
51 typedef struct AACCoefficientsEncoder {
52 void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s,
53 SingleChannelElement *sce, const float lambda);
54 void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce,
55 int win, int group_len, const float lambda);
56 void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, int size,
57 int scale_idx, int cb, const float lambda, int rtz);
58 void (*set_special_band_scalefactors)(struct AACEncContext *s, SingleChannelElement *sce);
59 void (*search_for_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);
60 void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe);
61 void (*search_for_is)(struct AACEncContext *s, AVCodecContext *avctx, ChannelElement *cpe);
62 } AACCoefficientsEncoder;
64 extern AACCoefficientsEncoder ff_aac_coders[];
69 typedef struct AACEncContext {
71 AACEncOptions options; ///< encoding options
73 FFTContext mdct1024; ///< long (1024 samples) frame transform context
74 FFTContext mdct128; ///< short (128 samples) frame transform context
75 AVFloatDSPContext *fdsp;
76 float *planar_samples[6]; ///< saved preprocessed input
78 int samplerate_index; ///< MPEG-4 samplerate index
79 int channels; ///< channel count
80 const uint8_t *chan_map; ///< channel configuration map
82 ChannelElement *cpe; ///< channel elements
84 struct FFPsyPreprocessContext* psypp;
85 AACCoefficientsEncoder *coder;
90 DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients
91 DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients
98 void ff_aac_coder_init_mips(AACEncContext *c);
100 #endif /* AVCODEC_AACENC_H */