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comparison src/render/SDL_yuv_sw_c.h @ 5159:307ccc9c135e

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Made it possible to create a texture of any format, even if not supported by the renderer. This allows me to reduce the set of formats supported by the renderers to the most optimal set, for a nice speed boost.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Feb 2011 00:19:40 -0800
parents src/video/SDL_yuv_sw_c.h@f7b03b6838cb
children b530ef003506
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5158:f3ebd1950442 5159:307ccc9c135e
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2010 Sam Lantinga
4
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.
9
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.
14
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
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #include "SDL_video.h"
25
26 /* This is the software implementation of the YUV texture support */
27
28 struct SDL_SW_YUVTexture
29 {
30 Uint32 format;
31 Uint32 target_format;
32 int w, h;
33 Uint8 *pixels;
34 int *colortab;
35 Uint32 *rgb_2_pix;
36 void (*Display1X) (int *colortab, Uint32 * rgb_2_pix,
37 unsigned char *lum, unsigned char *cr,
38 unsigned char *cb, unsigned char *out,
39 int rows, int cols, int mod);
40 void (*Display2X) (int *colortab, Uint32 * rgb_2_pix,
41 unsigned char *lum, unsigned char *cr,
42 unsigned char *cb, unsigned char *out,
43 int rows, int cols, int mod);
44
45 /* These are just so we don't have to allocate them separately */
46 Uint16 pitches[3];
47 Uint8 *planes[3];
48
49 /* This is a temporary surface in case we have to stretch copy */
50 SDL_Surface *stretch;
51 SDL_Surface *display;
52 };
53
54 typedef struct SDL_SW_YUVTexture SDL_SW_YUVTexture;
55
56 SDL_SW_YUVTexture *SDL_SW_CreateYUVTexture(Uint32 format, int w, int h);
57 int SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels,
58 int *pitch);
59 int SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
60 const void *pixels, int pitch);
61 int SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
62 void **pixels, int *pitch);
63 void SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata);
64 int SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect,
65 Uint32 target_format, int w, int h, void *pixels,
66 int pitch);
67 void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata);
68
69 /* vi: set ts=4 sw=4 expandtab: */