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

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
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/render/SDL_yuv_sw_c.h	Thu Feb 03 00:19:40 2011 -0800
@@ -0,0 +1,69 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2010 Sam Lantinga
+
+    This library 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.
+
+    This library 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 this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#include "SDL_video.h"
+
+/* This is the software implementation of the YUV texture support */
+
+struct SDL_SW_YUVTexture
+{
+    Uint32 format;
+    Uint32 target_format;
+    int w, h;
+    Uint8 *pixels;
+    int *colortab;
+    Uint32 *rgb_2_pix;
+    void (*Display1X) (int *colortab, Uint32 * rgb_2_pix,
+                       unsigned char *lum, unsigned char *cr,
+                       unsigned char *cb, unsigned char *out,
+                       int rows, int cols, int mod);
+    void (*Display2X) (int *colortab, Uint32 * rgb_2_pix,
+                       unsigned char *lum, unsigned char *cr,
+                       unsigned char *cb, unsigned char *out,
+                       int rows, int cols, int mod);
+
+    /* These are just so we don't have to allocate them separately */
+    Uint16 pitches[3];
+    Uint8 *planes[3];
+
+    /* This is a temporary surface in case we have to stretch copy */
+    SDL_Surface *stretch;
+    SDL_Surface *display;
+};
+
+typedef struct SDL_SW_YUVTexture SDL_SW_YUVTexture;
+
+SDL_SW_YUVTexture *SDL_SW_CreateYUVTexture(Uint32 format, int w, int h);
+int SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture * swdata, void **pixels,
+                                 int *pitch);
+int SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
+                            const void *pixels, int pitch);
+int SDL_SW_LockYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
+                          void **pixels, int *pitch);
+void SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture * swdata);
+int SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture * swdata, const SDL_Rect * srcrect,
+                        Uint32 target_format, int w, int h, void *pixels,
+                        int pitch);
+void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata);
+
+/* vi: set ts=4 sw=4 expandtab: */