h264pred.h
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上传日期:2022-07-11
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- /*
- * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
- * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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
- */
- /**
- * @file h264pred.h
- * H.264 / AVC / MPEG4 prediction functions.
- * @author Michael Niedermayer <michaelni@gmx.at>
- */
- #ifndef AVCODEC_H264PRED_H
- #define AVCODEC_H264PRED_H
- //#include "common.h"
- #include "dsputil.h"
- /**
- * Prediction types
- */
- //@{
- #define VERT_PRED 0
- #define HOR_PRED 1
- #define DC_PRED 2
- #define DIAG_DOWN_LEFT_PRED 3
- #define DIAG_DOWN_RIGHT_PRED 4
- #define VERT_RIGHT_PRED 5
- #define HOR_DOWN_PRED 6
- #define VERT_LEFT_PRED 7
- #define HOR_UP_PRED 8
- #define LEFT_DC_PRED 9
- #define TOP_DC_PRED 10
- #define DC_128_PRED 11
- #define DIAG_DOWN_LEFT_PRED_RV40_NODOWN 12
- #define HOR_UP_PRED_RV40_NODOWN 13
- #define VERT_LEFT_PRED_RV40_NODOWN 14
- #define DC_PRED8x8 0
- #define HOR_PRED8x8 1
- #define VERT_PRED8x8 2
- #define PLANE_PRED8x8 3
- #define LEFT_DC_PRED8x8 4
- #define TOP_DC_PRED8x8 5
- #define DC_128_PRED8x8 6
- #define ALZHEIMER_DC_L0T_PRED8x8 7
- #define ALZHEIMER_DC_0LT_PRED8x8 8
- #define ALZHEIMER_DC_L00_PRED8x8 9
- #define ALZHEIMER_DC_0L0_PRED8x8 10
- //@}
- /**
- * Context for storing H.264 prediction functions
- */
- typedef struct H264PredContext{
- void (*pred4x4 [9+3+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
- void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
- void (*pred8x8 [4+3+4])(uint8_t *src, int stride);
- void (*pred16x16[4+3])(uint8_t *src, int stride);
- void (*pred4x4_add [2])(uint8_t *pix/*align 4*/, const DCTELEM *block/*align 16*/, int stride);
- void (*pred8x8l_add [2])(uint8_t *pix/*align 8*/, const DCTELEM *block/*align 16*/, int stride);
- void (*pred8x8_add [3])(uint8_t *pix/*align 8*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
- void (*pred16x16_add[3])(uint8_t *pix/*align 16*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
- }H264PredContext;
- void ff_h264_pred_init(H264PredContext *h, int codec_id);
- #endif /* AVCODEC_H264PRED_H */