mirror of
https://github.com/librempeg/librempeg
synced 2024-11-23 11:39:47 +00:00
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/*
|
|
* 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
|
|
* H.264 / AVC / MPEG4 prediction functions.
|
|
* @author Michael Niedermayer <michaelni@gmx.at>
|
|
*/
|
|
|
|
#ifndef AVCODEC_H264PRED_H
|
|
#define AVCODEC_H264PRED_H
|
|
|
|
#include "libavutil/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
|
|
|
|
// 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 11 ///< 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, 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+2])(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, 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 */
|