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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Texture block module |
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| 3 | * Copyright (C) 2015 Vittorio Giovara |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * @file |
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| 24 | * Texture block (4x4) module |
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| 25 | * |
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| 26 | * References: |
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| 27 | * https://www.opengl.org/wiki/S3_Texture_Compression |
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| 28 | * https://www.opengl.org/wiki/Red_Green_Texture_Compression |
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| 29 | * https://msdn.microsoft.com/en-us/library/bb694531%28v=vs.85%29.aspx |
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| 30 | * |
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| 31 | * All functions return how much data has been written or read. |
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| 32 | * |
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| 33 | * Pixel input or output format is always AV_PIX_FMT_RGBA. |
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| 34 | */ |
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| 35 | |||
| 36 | #ifndef AVCODEC_TEXTUREDSP_H |
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| 37 | #define AVCODEC_TEXTUREDSP_H |
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| 38 | |||
| 39 | #include |
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| 40 | #include |
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| 41 | |||
| 42 | #define TEXTURE_BLOCK_W 4 |
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| 43 | #define TEXTURE_BLOCK_H 4 |
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| 44 | |||
| 45 | typedef struct TextureDSPContext { |
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| 46 | int (*dxt1_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 47 | int (*dxt1a_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 48 | int (*dxt2_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 49 | int (*dxt3_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 50 | int (*dxt4_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 51 | int (*dxt5_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 52 | int (*dxt5y_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 53 | int (*dxt5ys_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 54 | int (*rgtc1s_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 55 | int (*rgtc1u_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 56 | int (*rgtc2s_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 57 | int (*rgtc2u_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 58 | int (*dxn3dc_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); |
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| 59 | } TextureDSPContext; |
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| 60 | |||
| 61 | void ff_texturedsp_init(TextureDSPContext *c); |
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| 62 | void ff_texturedspenc_init(TextureDSPContext *c); |
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| 63 | |||
| 64 | #endif /* AVCODEC_TEXTUREDSP_H */ |