Libav 0.7.1
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00001 /* 00002 * AAC encoder 00003 * Copyright (C) 2008 Konstantin Shishkov 00004 * 00005 * This file is part of Libav. 00006 * 00007 * Libav is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * Libav is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with Libav; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #ifndef AVCODEC_AACENC_H 00023 #define AVCODEC_AACENC_H 00024 00025 #include "avcodec.h" 00026 #include "put_bits.h" 00027 #include "dsputil.h" 00028 00029 #include "aac.h" 00030 00031 #include "psymodel.h" 00032 00033 typedef struct AACEncOptions { 00034 int stereo_mode; 00035 } AACEncOptions; 00036 00037 struct AACEncContext; 00038 00039 typedef struct AACCoefficientsEncoder { 00040 void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s, 00041 SingleChannelElement *sce, const float lambda); 00042 void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce, 00043 int win, int group_len, const float lambda); 00044 void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, int size, 00045 int scale_idx, int cb, const float lambda); 00046 void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda); 00047 } AACCoefficientsEncoder; 00048 00049 extern AACCoefficientsEncoder ff_aac_coders[]; 00050 00054 typedef struct AACEncContext { 00055 AVClass *av_class; 00056 AACEncOptions options; 00057 PutBitContext pb; 00058 FFTContext mdct1024; 00059 FFTContext mdct128; 00060 DSPContext dsp; 00061 int16_t *samples; 00062 00063 int samplerate_index; 00064 00065 ChannelElement *cpe; 00066 FFPsyContext psy; 00067 struct FFPsyPreprocessContext* psypp; 00068 AACCoefficientsEncoder *coder; 00069 int cur_channel; 00070 int last_frame; 00071 float lambda; 00072 DECLARE_ALIGNED(16, int, qcoefs)[96]; 00073 DECLARE_ALIGNED(32, float, scoefs)[1024]; 00074 } AACEncContext; 00075 00076 #endif /* AVCODEC_AACENC_H */