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https://gitee.com/openharmony/third_party_ffmpeg
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60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#ifndef AVCODEC_INTRAX8_H
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#define AVCODEC_INTRAX8_H
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#include "get_bits.h"
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#include "mpegvideo.h"
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#include "intrax8dsp.h"
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typedef struct IntraX8Context {
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VLC * j_ac_vlc[4];//they point to the static j_mb_vlc
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VLC * j_orient_vlc;
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VLC * j_dc_vlc[3];
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int use_quant_matrix;
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//set by ff_intrax8_common_init
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uint8_t * prediction_table;//2*(mb_w*2)
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ScanTable scantable[3];
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//set by the caller codec
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MpegEncContext * s;
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IntraX8DSPContext dsp;
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int quant;
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int dquant;
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int qsum;
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//calculated per frame
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int quant_dc_chroma;
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int divide_quant_dc_luma;
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int divide_quant_dc_chroma;
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//changed per block
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int edges;
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int flat_dc;
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int predicted_dc;
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int raw_orient;
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int chroma_orient;
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int orient;
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int est_run;
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} IntraX8Context;
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void ff_intrax8_common_init(IntraX8Context * w, MpegEncContext * const s);
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void ff_intrax8_common_end(IntraX8Context * w);
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int ff_intrax8_decode_picture(IntraX8Context * w, int quant, int halfpq);
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#endif /* AVCODEC_INTRAX8_H */
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