1 /* 2 * AAC encoder main-type prediction 3 * Copyright (C) 2015 Rostislav Pehlivanov 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 /** 23 * @file 24 * AAC encoder main-type prediction 25 * @author Rostislav Pehlivanov ( atomnuker gmail com ) 26 */ 27 28 #ifndef AVCODEC_AACENC_PRED_H 29 #define AVCODEC_AACENC_PRED_H 30 31 #include "aacenc.h" 32 33 /* Every predictor group needs to get reset at least once in this many frames */ 34 #define PRED_RESET_FRAME_MIN 240 35 36 /* Any frame with less than this amount of frames since last reset is ok */ 37 #define PRED_RESET_MIN 64 38 39 /* Raise to filter any low frequency artifacts due to prediction */ 40 #define PRED_SFB_START 10 41 42 void ff_aac_apply_main_pred(AACEncContext *s, SingleChannelElement *sce); 43 void ff_aac_adjust_common_pred(AACEncContext *s, ChannelElement *cpe); 44 void ff_aac_search_for_pred(AACEncContext *s, SingleChannelElement *sce); 45 void ff_aac_encode_main_pred(AACEncContext *s, SingleChannelElement *sce); 46 47 #endif /* AVCODEC_AACENC_PRED_H */ 48