/* * 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 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, 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 */