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123 lines
4.5 KiB
123 lines
4.5 KiB
/* |
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* H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder |
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* H.264 / AVC / MPEG4 prediction functions. |
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* @author Michael Niedermayer <michaelni@gmx.at> |
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*/ |
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#ifndef AVCODEC_H264PRED_H |
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#define AVCODEC_H264PRED_H |
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#include <stddef.h> |
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#include <stdint.h> |
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/** |
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* Prediction types |
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*/ |
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//@{ |
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#define VERT_PRED 0 |
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#define HOR_PRED 1 |
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#define DC_PRED 2 |
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#define DIAG_DOWN_LEFT_PRED 3 |
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#define DIAG_DOWN_RIGHT_PRED 4 |
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#define VERT_RIGHT_PRED 5 |
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#define HOR_DOWN_PRED 6 |
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#define VERT_LEFT_PRED 7 |
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#define HOR_UP_PRED 8 |
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// DC edge (not for VP8) |
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#define LEFT_DC_PRED 9 |
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#define TOP_DC_PRED 10 |
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#define DC_128_PRED 11 |
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// RV40 specific |
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#define DIAG_DOWN_LEFT_PRED_RV40_NODOWN 12 |
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#define HOR_UP_PRED_RV40_NODOWN 13 |
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#define VERT_LEFT_PRED_RV40_NODOWN 14 |
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// VP8 specific |
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#define TM_VP8_PRED 9 ///< "True Motion", used instead of plane |
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#define VERT_VP8_PRED 10 ///< for VP8, #VERT_PRED is the average of |
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///< (left col+cur col x2+right col) / 4; |
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///< this is the "unaveraged" one |
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#define HOR_VP8_PRED 14 ///< unaveraged version of #HOR_PRED, see |
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///< #VERT_VP8_PRED for details |
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#define DC_127_PRED 12 |
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#define DC_129_PRED 13 |
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#define DC_PRED8x8 0 |
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#define HOR_PRED8x8 1 |
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#define VERT_PRED8x8 2 |
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#define PLANE_PRED8x8 3 |
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// DC edge |
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#define LEFT_DC_PRED8x8 4 |
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#define TOP_DC_PRED8x8 5 |
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#define DC_128_PRED8x8 6 |
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// H264/SVQ3 (8x8) specific |
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#define ALZHEIMER_DC_L0T_PRED8x8 7 |
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#define ALZHEIMER_DC_0LT_PRED8x8 8 |
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#define ALZHEIMER_DC_L00_PRED8x8 9 |
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#define ALZHEIMER_DC_0L0_PRED8x8 10 |
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// VP8 specific |
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#define DC_127_PRED8x8 7 |
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#define DC_129_PRED8x8 8 |
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//@} |
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/** |
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* Context for storing H.264 prediction functions |
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*/ |
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typedef struct H264PredContext { |
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void(*pred4x4[9 + 3 + 3])(uint8_t *src, const uint8_t *topright, |
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ptrdiff_t stride); |
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void(*pred8x8l[9 + 3])(uint8_t *src, int topleft, int topright, |
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ptrdiff_t stride); |
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void(*pred8x8[4 + 3 + 4])(uint8_t *src, ptrdiff_t stride); |
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void(*pred16x16[4 + 3 + 2])(uint8_t *src, ptrdiff_t stride); |
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void(*pred4x4_add[2])(uint8_t *pix /*align 4*/, |
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int16_t *block /*align 16*/, ptrdiff_t stride); |
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void(*pred8x8l_add[2])(uint8_t *pix /*align 8*/, |
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int16_t *block /*align 16*/, ptrdiff_t stride); |
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void(*pred8x8l_filter_add[2])(uint8_t *pix /*align 8*/, |
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int16_t *block /*align 16*/, int topleft, int topright, ptrdiff_t stride); |
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void(*pred8x8_add[3])(uint8_t *pix /*align 8*/, |
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const int *block_offset, |
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int16_t *block /*align 16*/, ptrdiff_t stride); |
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void(*pred16x16_add[3])(uint8_t *pix /*align 16*/, |
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const int *block_offset, |
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int16_t *block /*align 16*/, ptrdiff_t stride); |
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} H264PredContext; |
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void ff_h264_pred_init(H264PredContext *h, int codec_id, |
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const int bit_depth, const int chroma_format_idc); |
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void ff_h264_pred_init_arm(H264PredContext *h, int codec_id, |
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const int bit_depth, const int chroma_format_idc); |
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void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, |
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const int bit_depth, const int chroma_format_idc); |
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void ff_h264_pred_init_mips(H264PredContext *h, int codec_id, |
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const int bit_depth, const int chroma_format_idc); |
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#endif /* AVCODEC_H264PRED_H */
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