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"
35 typedef enum AACCoder {
44 typedef struct AACEncOptions {
55 typedef struct AACCoefficientsEncoder {
56 void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s,
57 SingleChannelElement *sce, const float lambda);
58 void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce,
59 int win, int group_len, const float lambda);
60 void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, float *out, int size,
61 int scale_idx, int cb, const float lambda, int rtz);
62 void (*encode_tns_info)(struct AACEncContext *s, SingleChannelElement *sce);
63 void (*encode_main_pred)(struct AACEncContext *s, SingleChannelElement *sce);
64 void (*adjust_common_pred)(struct AACEncContext *s, ChannelElement *cpe);
65 void (*apply_main_pred)(struct AACEncContext *s, SingleChannelElement *sce);
66 void (*apply_tns_filt)(struct AACEncContext *s, SingleChannelElement *sce);
67 void (*set_special_band_scalefactors)(struct AACEncContext *s, SingleChannelElement *sce);
68 void (*search_for_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);
69 void (*mark_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);
70 void (*search_for_tns)(struct AACEncContext *s, SingleChannelElement *sce);
71 void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe);
72 void (*search_for_is)(struct AACEncContext *s, AVCodecContext *avctx, ChannelElement *cpe);
73 void (*search_for_pred)(struct AACEncContext *s, SingleChannelElement *sce);
74 } AACCoefficientsEncoder;
76 extern AACCoefficientsEncoder ff_aac_coders[];
78 typedef struct AACQuantizeBandCostCacheEntry {
81 int bits; ///< -1 means uninitialized entry
84 char padding[2]; ///< Keeps the entry size a multiple of 32 bits
85 } AACQuantizeBandCostCacheEntry;
90 typedef struct AACEncContext {
92 AACEncOptions options; ///< encoding options
94 FFTContext mdct1024; ///< long (1024 samples) frame transform context
95 FFTContext mdct128; ///< short (128 samples) frame transform context
96 AVFloatDSPContext *fdsp;
97 float *planar_samples[8]; ///< saved preprocessed input
99 int profile; ///< copied from avctx
100 LPCContext lpc; ///< used by TNS
101 int samplerate_index; ///< MPEG-4 samplerate index
102 int channels; ///< channel count
103 const uint8_t *chan_map; ///< channel configuration map
105 ChannelElement *cpe; ///< channel elements
107 struct FFPsyPreprocessContext* psypp;
108 AACCoefficientsEncoder *coder;
109 int cur_channel; ///< current channel for coder context
113 float lambda_sum; ///< sum(lambda), for Qvg reporting
114 int lambda_count; ///< count(lambda), for Qvg reporting
115 enum RawDataBlockType cur_type; ///< channel group type cur_channel belongs to
118 DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients
119 DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients
121 AACQuantizeBandCostCacheEntry quantize_band_cost_cache[256][128]; ///< memoization area for quantize_band_cost
128 void ff_aac_coder_init_mips(AACEncContext *c);
129 void ff_quantize_band_cost_cache_init(struct AACEncContext *s);
132 #endif /* AVCODEC_AACENC_H */