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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * Copyright (C) 2012 Ronald S. Bultje |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | * @file |
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| 23 | * Core video DSP helper functions |
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| 24 | */ |
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| 25 | |||
| 26 | #ifndef AVCODEC_VIDEODSP_H |
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| 27 | #define AVCODEC_VIDEODSP_H |
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| 28 | |||
| 29 | #include |
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| 30 | #include |
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| 31 | |||
| 32 | #define EMULATED_EDGE(depth) \ |
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| 33 | void ff_emulated_edge_mc_ ## depth(uint8_t *dst, ptrdiff_t dst_stride, \ |
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| 34 | const uint8_t *src, ptrdiff_t src_stride, \ |
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| 35 | int block_w, int block_h,\ |
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| 36 | int src_x, int src_y, int w, int h); |
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| 37 | |||
| 38 | EMULATED_EDGE(8) |
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| 39 | EMULATED_EDGE(16) |
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| 40 | |||
| 41 | typedef struct VideoDSPContext { |
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| 42 | /** |
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| 43 | * Copy a rectangular area of samples to a temporary buffer and replicate |
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| 44 | * the border samples. |
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| 45 | * |
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| 46 | * @param dst destination buffer |
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| 47 | * @param dst_stride number of bytes between 2 vertically adjacent samples |
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| 48 | * in destination buffer |
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| 49 | * @param src source buffer |
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| 50 | * @param src_stride number of bytes between 2 vertically adjacent samples |
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| 51 | * in source buffer |
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| 52 | * @param block_w width of block |
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| 53 | * @param block_h height of block |
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| 54 | * @param src_x x coordinate of the top left sample of the block in the |
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| 55 | * source buffer |
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| 56 | * @param src_y y coordinate of the top left sample of the block in the |
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| 57 | * source buffer |
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| 58 | * @param w width of the source buffer |
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| 59 | * @param h height of the source buffer |
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| 60 | */ |
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| 61 | void (*emulated_edge_mc)(uint8_t *dst, ptrdiff_t dst_stride, |
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| 62 | const uint8_t *src, ptrdiff_t src_stride, |
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| 63 | int block_w, int block_h, |
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| 64 | int src_x, int src_y, int w, int h); |
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| 65 | |||
| 66 | /** |
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| 67 | * Prefetch memory into cache (if supported by hardware). |
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| 68 | * |
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| 69 | * @param buf pointer to buffer to prefetch memory from |
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| 70 | * @param stride distance between two lines of buf (in bytes) |
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| 71 | * @param h number of lines to prefetch |
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| 72 | */ |
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| 73 | void (*prefetch)(uint8_t *buf, ptrdiff_t stride, int h); |
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| 74 | } VideoDSPContext; |
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| 75 | |||
| 76 | void ff_videodsp_init(VideoDSPContext *ctx, int bpc); |
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| 77 | |||
| 78 | /* for internal use only (i.e. called by ff_videodsp_init() */ |
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| 79 | void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc); |
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| 80 | void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc); |
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| 81 | void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc); |
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| 82 | |||
| 83 | #endif /* AVCODEC_VIDEODSP_H */ |