SDL: src/video/SDL_yuv_sw_c.h@f7b03b6838cb

     1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2010 Sam Lantinga

     5     This library is free software; you can redistribute it and/or

     6     modify it under the terms of the GNU Lesser General Public

     7     License as published by the Free Software Foundation; either

     8     version 2.1 of the License, or (at your option) any later version.

    10     This library is distributed in the hope that it will be useful,

    11     but WITHOUT ANY WARRANTY; without even the implied warranty of

    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13     Lesser General Public License for more details.

    15     You should have received a copy of the GNU Lesser General Public

    16     License along with this library; if not, write to the Free Software

    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    19     Sam Lantinga

    20     slouken@libsdl.org

    21 */

    22 #include "SDL_config.h"

    24 #include "SDL_video.h"

    25 #include "SDL_sysvideo.h"

    27 /* This is the software implementation of the YUV texture support */

    29 struct SDL_SW_YUVTexture

    30 {

    31     Uint32 format;

    32     Uint32 target_format;

    33     int w, h;

    34     Uint8 *pixels;

    35     int *colortab;

    36     Uint32 *rgb_2_pix;

    37     void (*Display1X) (int *colortab, Uint32 * rgb_2_pix,

    38                        unsigned char *lum, unsigned char *cr,

    39                        unsigned char *cb, unsigned char *out,

    40                        int rows, int cols, int mod);

    41     void (*Display2X) (int *colortab, Uint32 * rgb_2_pix,

    42                        unsigned char *lum, unsigned char *cr,

    43                        unsigned char *cb, unsigned char *out,

    44                        int rows, int cols, int mod);

    46     /* These are just so we don't have to allocate them separately */

    47     Uint16 pitches[3];

    48     Uint8 *planes[3];

    50     /* This is a temporary surface in case we have to stretch copy */

    51     SDL_Surface *stretch;

    52     SDL_Surface *display;

    53 };

    55 typedef struct SDL_SW_YUVTexture SDL_SW_YUVTexture;

    57 SDL_SW_YUVTexture *SDL_SW_CreateYUVTexture(Uint32 format, int w, int h);

    58 int SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels,

    59                                  int *pitch);

    60 int SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,

    61                             const void *pixels, int pitch);

    62 int SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,

    63                           int markDirty, void **pixels, int *pitch);

    64 void SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata);

    65 int SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect,

    66                         Uint32 target_format, int w, int h, void *pixels,

    67                         int pitch);

    68 void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata);

    70 /* vi: set ts=4 sw=4 expandtab: */

author	Sam Lantinga
	Sun, 24 Jan 2010 21:10:53 +0000
changeset 3697	f7b03b6838cb
parent 3257	94fb40a4a9a7
permissions	-rw-r--r--