libavcodec/rv34.h

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/*
 * RV30/40 decoder common data declarations
 * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVCODEC_RV34_H
#define AVCODEC_RV34_H

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"

#include "h264pred.h"
#include "rv34dsp.h"

#define MB_TYPE_SEPARATE_DC 0x01000000
#define IS_SEPARATE_DC(a)   ((a) & MB_TYPE_SEPARATE_DC)

enum RV40BlockTypes{
    RV34_MB_TYPE_INTRA,      
    RV34_MB_TYPE_INTRA16x16, 
    RV34_MB_P_16x16,         
    RV34_MB_P_8x8,           
    RV34_MB_B_FORWARD,       
    RV34_MB_B_BACKWARD,      
    RV34_MB_SKIP,            
    RV34_MB_B_DIRECT,        
    RV34_MB_P_16x8,          
    RV34_MB_P_8x16,          
    RV34_MB_B_BIDIR,         
    RV34_MB_P_MIX16x16,      
    RV34_MB_TYPES
};

typedef struct RV34VLC{
    VLC cbppattern[2];     
    VLC cbp[2][4];         
    VLC first_pattern[4];  
    VLC second_pattern[2]; 
    VLC third_pattern[2];  
    VLC coefficient;       
}RV34VLC;

typedef struct SliceInfo{
    int type;              
    int quant;             
    int vlc_set;           
    int start, end;        
    int width;             
    int height;            
    int pts;               
}SliceInfo;

typedef struct RV34DecContext{
    MpegEncContext s;
    RV34DSPContext rdsp;
    int8_t *intra_types_hist;
    int8_t *intra_types;     
    int    intra_types_stride;
    const uint8_t *luma_dc_quant_i;
    const uint8_t *luma_dc_quant_p;

    RV34VLC *cur_vlcs;       
    H264PredContext h;       
    SliceInfo si;            

    int *mb_type;            
    int block_type;          
    int luma_vlc;            
    int chroma_vlc;          
    int is16;                
    int dmv[4][2];           

    int rv30;                
    int rpr;                 

    int cur_pts, last_pts, next_pts;
    int scaled_weight;
    int weight1, weight2;    
    int mv_weight1, mv_weight2;

    uint16_t *cbp_luma;      
    uint8_t  *cbp_chroma;    
    uint16_t *deblock_coefs; 

    DECLARE_ALIGNED(8, uint32_t, avail_cache)[3*4];

    uint8_t *tmp_b_block_y[2];
    uint8_t *tmp_b_block_uv[4];
    uint8_t *tmp_b_block_base;

    int (*parse_slice_header)(struct RV34DecContext *r, GetBitContext *gb, SliceInfo *si);
    int (*decode_mb_info)(struct RV34DecContext *r);
    int (*decode_intra_types)(struct RV34DecContext *r, GetBitContext *gb, int8_t *dst);
    void (*loop_filter)(struct RV34DecContext *r, int row);
}RV34DecContext;

int ff_rv34_get_start_offset(GetBitContext *gb, int blocks);
int ff_rv34_decode_init(AVCodecContext *avctx);
int ff_rv34_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt);
int ff_rv34_decode_end(AVCodecContext *avctx);
int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx);
int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);

#endif /* AVCODEC_RV34_H */

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