67 lines
2.8 KiB
C
67 lines
2.8 KiB
C
|
/*
|
||
|
|
* Texture block module
|
||
|
|
* Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com>
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* 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 (*rgtc1u_gray_block) (uint8_t *dst, ptrdiff_t stride, const uint8_t *block);
|
||
|
|
int (*rgtc1u_alpha_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 */
|