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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 Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* H.264 / AVC / MPEG4 prediction functions.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#ifndef AVCODEC_H264PRED_H
#define AVCODEC_H264PRED_H
#include <stddef.h>
#include <stdint.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
// DC edge (not for VP8)
#define LEFT_DC_PRED 9
#define TOP_DC_PRED 10
#define DC_128_PRED 11
// RV40 specific
#define DIAG_DOWN_LEFT_PRED_RV40_NODOWN 12
#define HOR_UP_PRED_RV40_NODOWN 13
#define VERT_LEFT_PRED_RV40_NODOWN 14
// VP8 specific
#define TM_VP8_PRED 9 ///< "True Motion", used instead of plane
#define VERT_VP8_PRED 10 ///< for VP8, #VERT_PRED is the average of
///< (left col+cur col x2+right col) / 4;
///< this is the "unaveraged" one
#define HOR_VP8_PRED 14 ///< unaveraged version of #HOR_PRED, see
///< #VERT_VP8_PRED for details
#define DC_127_PRED 12
#define DC_129_PRED 13
#define DC_PRED8x8 0
#define HOR_PRED8x8 1
#define VERT_PRED8x8 2
#define PLANE_PRED8x8 3
// DC edge
#define LEFT_DC_PRED8x8 4
#define TOP_DC_PRED8x8 5
#define DC_128_PRED8x8 6
// H264/SVQ3 (8x8) specific
#define ALZHEIMER_DC_L0T_PRED8x8 7
#define ALZHEIMER_DC_0LT_PRED8x8 8
#define ALZHEIMER_DC_L00_PRED8x8 9
#define ALZHEIMER_DC_0L0_PRED8x8 10
// VP8 specific
#define DC_127_PRED8x8 7
#define DC_129_PRED8x8 8
//@}
/**
* Context for storing H.264 prediction functions
*/
typedef struct H264PredContext {
void(*pred4x4[9 + 3 + 3])(uint8_t *src, const uint8_t *topright,
ptrdiff_t stride);
void(*pred8x8l[9 + 3])(uint8_t *src, int topleft, int topright,
ptrdiff_t stride);
void(*pred8x8[4 + 3 + 4])(uint8_t *src, ptrdiff_t stride);
void(*pred16x16[4 + 3 + 2])(uint8_t *src, ptrdiff_t stride);
void(*pred4x4_add[2])(uint8_t *pix /*align 4*/,
int16_t *block /*align 16*/, ptrdiff_t stride);
void(*pred8x8l_add[2])(uint8_t *pix /*align 8*/,
int16_t *block /*align 16*/, ptrdiff_t stride);
void(*pred8x8_add[3])(uint8_t *pix /*align 8*/,
const int *block_offset,
int16_t *block /*align 16*/, ptrdiff_t stride);
void(*pred16x16_add[3])(uint8_t *pix /*align 16*/,
const int *block_offset,
int16_t *block /*align 16*/, ptrdiff_t stride);
} H264PredContext;
void ff_h264_pred_init(H264PredContext *h, int codec_id,
const int bit_depth, const int chroma_format_idc);
void ff_h264_pred_init_arm(H264PredContext *h, int codec_id,
const int bit_depth, const int chroma_format_idc);
void ff_h264_pred_init_x86(H264PredContext *h, int codec_id,
const int bit_depth, const int chroma_format_idc);
#endif /* AVCODEC_H264PRED_H */
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