cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

SDL_yuv_sw_c.h (3069B)

      1/*
      2  Simple DirectMedia Layer
      3  Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
      4
      5  This software is provided 'as-is', without any express or implied
      6  warranty.  In no event will the authors be held liable for any damages
      7  arising from the use of this software.
      8
      9  Permission is granted to anyone to use this software for any purpose,
     10  including commercial applications, and to alter it and redistribute it
     11  freely, subject to the following restrictions:
     12
     13  1. The origin of this software must not be misrepresented; you must not
     14     claim that you wrote the original software. If you use this software
     15     in a product, an acknowledgment in the product documentation would be
     16     appreciated but is not required.
     17  2. Altered source versions must be plainly marked as such, and must not be
     18     misrepresented as being the original software.
     19  3. This notice may not be removed or altered from any source distribution.
     20*/
     21#include "../SDL_internal.h"
     22
     23#include "SDL_video.h"
     24
     25/* This is the software implementation of the YUV texture support */
     26
     27struct SDL_SW_YUVTexture
     28{
     29    Uint32 format;
     30    Uint32 target_format;
     31    int w, h;
     32    Uint8 *pixels;
     33    int *colortab;
     34    Uint32 *rgb_2_pix;
     35    void (*Display1X) (int *colortab, Uint32 * rgb_2_pix,
     36                       unsigned char *lum, unsigned char *cr,
     37                       unsigned char *cb, unsigned char *out,
     38                       int rows, int cols, int mod);
     39    void (*Display2X) (int *colortab, Uint32 * rgb_2_pix,
     40                       unsigned char *lum, unsigned char *cr,
     41                       unsigned char *cb, unsigned char *out,
     42                       int rows, int cols, int mod);
     43
     44    /* These are just so we don't have to allocate them separately */
     45    Uint16 pitches[3];
     46    Uint8 *planes[3];
     47
     48    /* This is a temporary surface in case we have to stretch copy */
     49    SDL_Surface *stretch;
     50    SDL_Surface *display;
     51};
     52
     53typedef struct SDL_SW_YUVTexture SDL_SW_YUVTexture;
     54
     55SDL_SW_YUVTexture *SDL_SW_CreateYUVTexture(Uint32 format, int w, int h);
     56int SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels,
     57                                 int *pitch);
     58int SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
     59                            const void *pixels, int pitch);
     60int SDL_SW_UpdateYUVTexturePlanar(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
     61                                  const Uint8 *Yplane, int Ypitch,
     62                                  const Uint8 *Uplane, int Upitch,
     63                                  const Uint8 *Vplane, int Vpitch);
     64int SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
     65                          void **pixels, int *pitch);
     66void SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata);
     67int SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect,
     68                        Uint32 target_format, int w, int h, void *pixels,
     69                        int pitch);
     70void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata);
     71
     72/* vi: set ts=4 sw=4 expandtab: */