repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * AAC encoder | |
| 3 | * Copyright (C) 2008 Konstantin Shishkov | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 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. | |
| 11 | * | |
| 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. | |
| 16 | * | |
| 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 | |
| 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 enum AACCoder { | |
| 34 | AAC_CODER_FAAC = 0, | |
| 35 | AAC_CODER_ANMR, | |
| 36 | AAC_CODER_TWOLOOP, | |
| 37 | AAC_CODER_FAST, | |
| 38 | ||
| 39 | AAC_CODER_NB, | |
| 40 | }AACCoder; | |
| 41 | ||
| 42 | typedef struct AACEncOptions { | |
| 43 | int stereo_mode; | |
| 44 | int aac_coder; | |
| 45 | } AACEncOptions; | |
| 46 | ||
| 47 | struct AACEncContext; | |
| 48 | ||
| 49 | typedef struct AACCoefficientsEncoder { | |
| 50 | void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s, | |
| 51 | SingleChannelElement *sce, const float lambda); | |
| 52 | void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce, | |
| 53 | int win, int group_len, const float lambda); | |
| 54 | void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, int size, | |
| 55 | int scale_idx, int cb, const float lambda); | |
| 56 | void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda); | |
| 57 | } AACCoefficientsEncoder; | |
| 58 | ||
| 59 | extern AACCoefficientsEncoder ff_aac_coders[]; | |
| 60 | ||
| 61 | /** | |
| 62 | * AAC encoder context | |
| 63 | */ | |
| 64 | typedef struct AACEncContext { | |
| 65 | AVClass *av_class; | |
| 66 | AACEncOptions options; ///< encoding options | |
| 67 | PutBitContext pb; | |
| 68 | FFTContext mdct1024; ///< long (1024 samples) frame transform context | |
| 69 | FFTContext mdct128; ///< short (128 samples) frame transform context | |
| 70 | AVFloatDSPContext fdsp; | |
| 71 | float *planar_samples[6]; ///< saved preprocessed input | |
| 72 | ||
| 73 | int samplerate_index; ///< MPEG-4 samplerate index | |
| 74 | int channels; ///< channel count | |
| 75 | const uint8_t *chan_map; ///< channel configuration map | |
| 76 | ||
| 77 | ChannelElement *cpe; ///< channel elements | |
| 78 | FFPsyContext psy; | |
| 79 | struct FFPsyPreprocessContext* psypp; | |
| 80 | AACCoefficientsEncoder *coder; | |
| 81 | int cur_channel; | |
| 82 | int last_frame; | |
| 83 | float lambda; | |
| 84 | AudioFrameQueue afq; | |
| 85 | DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients | |
| 86 | DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients | |
| 87 | ||
| 88 | struct { | |
| 89 | float *samples; | |
| 90 | } buffer; | |
| 91 | } AACEncContext; | |
| 92 | ||
| 93 | extern float ff_aac_pow34sf_tab[428]; | |
| 94 | ||
| 95 | void ff_aac_coder_init_mips(AACEncContext *c); | |
| 96 | ||
| 97 | #endif /* AVCODEC_AACENC_H */ |