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71 lines
2.5 KiB
71 lines
2.5 KiB
/* |
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* Copyright (C) 2012 Ronald S. Bultje |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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* Core video DSP helper functions |
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*/ |
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#ifndef AVCODEC_VIDEODSP_H |
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#define AVCODEC_VIDEODSP_H |
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#include <stddef.h> |
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#include <stdint.h> |
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typedef struct VideoDSPContext { |
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/** |
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* Copy a rectangular area of samples to a temporary buffer and replicate |
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* the border samples. |
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* |
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* @param buf destination buffer |
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* @param src source buffer |
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* @param linesize number of bytes between 2 vertically adjacent samples |
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* in both the source and destination buffers |
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* @param block_w width of block |
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* @param block_h height of block |
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* @param src_x x coordinate of the top left sample of the block in the |
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* source buffer |
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* @param src_y y coordinate of the top left sample of the block in the |
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* source buffer |
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* @param w width of the source buffer |
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* @param h height of the source buffer |
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*/ |
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void (*emulated_edge_mc)(uint8_t *buf, const uint8_t *src, |
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ptrdiff_t linesize, int block_w, int block_h, |
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int src_x, int src_y, int w, int h); |
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/** |
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* Prefetch memory into cache (if supported by hardware). |
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* |
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* @buf pointer to buffer to prefetch memory from |
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* @stride distance between two lines of buf (in bytes) |
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* @h number of lines to prefetch |
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*/ |
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void (*prefetch)(uint8_t *buf, ptrdiff_t stride, int h); |
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} VideoDSPContext; |
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void ff_videodsp_init(VideoDSPContext *ctx, int bpc); |
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/* for internal use only (i.e. called by ff_videodsp_init() */ |
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void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc); |
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void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc); |
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void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc); |
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#endif /* AVCODEC_VIDEODSP_H */
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