mirror of https://git.ffmpeg.org/ffmpeg.git
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
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/*
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* AAC encoder main-type prediction
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* Copyright (C) 2015 Rostislav Pehlivanov
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* AAC encoder main prediction
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* @author Rostislav Pehlivanov ( atomnuker gmail com )
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*/
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#ifndef AVCODEC_AACENC_PRED_H
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#define AVCODEC_AACENC_PRED_H
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#include "aacenc.h"
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/* Every predictor group needs to get reset at least once in this many frames */
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#define PRED_RESET_FRAME_MIN 240
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/* Any frame with less than this amount of frames since last reset is ok */
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#define PRED_RESET_MIN 128
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/* Raise to filter any low frequency artifacts due to prediction */
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#define PRED_SFB_START 10
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/* Offset for the number of bits to encode normal coefficients */
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#define PRICE_OFFSET 440
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void apply_main_pred(AACEncContext *s, SingleChannelElement *sce);
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void update_main_pred(AACEncContext *s, SingleChannelElement *sce, ChannelElement *cpe);
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void adjust_common_prediction(AACEncContext *s, ChannelElement *cpe);
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void search_for_pred(AACEncContext *s, SingleChannelElement *sce);
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void encode_main_pred(AACEncContext *s, SingleChannelElement *sce);
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#endif /* AVCODEC_AACENC_PRED_H */
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