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Diffstat (limited to 'media/ffvpx/libavcodec/h264pred.h')
| -rw-r--r-- | media/ffvpx/libavcodec/h264pred.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/h264pred.h b/media/ffvpx/libavcodec/h264pred.h new file mode 100644 index 000000000..2863dc9bd --- /dev/null +++ b/media/ffvpx/libavcodec/h264pred.h @@ -0,0 +1,126 @@ +/* + * 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 / MPEG-4 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 + +// H.264/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(*pred8x8l_filter_add[2])(uint8_t *pix /*align 8*/, + int16_t *block /*align 16*/, int topleft, int topright, 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_aarch64(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); +void ff_h264_pred_init_mips(H264PredContext *h, int codec_id, + const int bit_depth, const int chroma_format_idc); + +#endif /* AVCODEC_H264PRED_H */ |