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libavcodec/intrax8.h

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00001 /*
00002  * This file is part of FFmpeg.
00003  *
00004  * FFmpeg is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU Lesser General Public
00006  * License as published by the Free Software Foundation; either
00007  * version 2.1 of the License, or (at your option) any later version.
00008  *
00009  * FFmpeg is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * Lesser General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU Lesser General Public
00015  * License along with FFmpeg; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00017  */
00018 
00019 #ifndef AVCODEC_INTRAX8_H
00020 #define AVCODEC_INTRAX8_H
00021 
00022 #include "get_bits.h"
00023 #include "mpegvideo.h"
00024 
00025 typedef struct{
00026     VLC * j_ac_vlc[4];//they point to the static j_mb_vlc
00027     VLC * j_orient_vlc;
00028     VLC * j_dc_vlc[3];
00029 
00030     int use_quant_matrix;
00031 //set by ff_intrax8_common_init
00032     uint8_t * prediction_table;//2*(mb_w*2)
00033     ScanTable scantable[3];
00034 //set by the caller codec
00035     MpegEncContext * s;
00036     int quant;
00037     int dquant;
00038     int qsum;
00039 //calculated per frame
00040     int quant_dc_chroma;
00041     int divide_quant_dc_luma;
00042     int divide_quant_dc_chroma;
00043 //changed per block
00044     int edges;
00045     int flat_dc;
00046     int predicted_dc;
00047     int raw_orient;
00048     int chroma_orient;
00049     int orient;
00050     int est_run;
00051 } IntraX8Context;
00052 
00053 void ff_intrax8_common_init(IntraX8Context * w, MpegEncContext * const s);
00054 void ff_intrax8_common_end(IntraX8Context * w);
00055 int  ff_intrax8_decode_picture(IntraX8Context * w, int quant, int halfpq);
00056 
00057 #endif /* AVCODEC_INTRAX8_H */

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