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Diffstat (limited to 'libavcodec/texturedsp.h')
| -rw-r--r-- | libavcodec/texturedsp.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/libavcodec/texturedsp.h b/libavcodec/texturedsp.h new file mode 100644 index 0000000000..fcbe7a4d26 --- /dev/null +++ b/libavcodec/texturedsp.h @@ -0,0 +1,64 @@ +/* + * Texture block module + * Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com> + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Texture block (4x4) module + * + * References: + * https://www.opengl.org/wiki/S3_Texture_Compression + * https://www.opengl.org/wiki/Red_Green_Texture_Compression + * https://msdn.microsoft.com/en-us/library/bb694531%28v=vs.85%29.aspx + * + * All functions return how much data has been written or read. + * + * Pixel input or output format is always AV_PIX_FMT_RGBA. + */ + +#ifndef AVCODEC_TEXTUREDSP_H +#define AVCODEC_TEXTUREDSP_H + +#include <stddef.h> +#include <stdint.h> + +#define TEXTURE_BLOCK_W 4 +#define TEXTURE_BLOCK_H 4 + +typedef struct TextureDSPContext { + int (*dxt1_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt1a_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt2_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt3_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt4_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt5_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt5y_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxt5ys_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*rgtc1s_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*rgtc1u_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*rgtc2s_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*rgtc2u_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); + int (*dxn3dc_block)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block); +} TextureDSPContext; + +void ff_texturedsp_init(TextureDSPContext *c); +void ff_texturedspenc_init(TextureDSPContext *c); + +#endif /* AVCODEC_TEXTUREDSP_H */ |