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2026-03-23 12:11:07 +01:00
commit e64eb40b38
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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_yuv_sw_c_h_
+#define SDL_yuv_sw_c_h_
+
+#include "SDL_internal.h"
+
+// This is the software implementation of the YUV texture support
+
+struct SDL_SW_YUVTexture
+{
+    SDL_PixelFormat format;
+    SDL_Colorspace colorspace;
+    SDL_PixelFormat target_format;
+    int w, h;
+    Uint8 *pixels;
+
+    // These are just so we don't have to allocate them separately
+    int 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;
+
+extern SDL_SW_YUVTexture *SDL_SW_CreateYUVTexture(SDL_PixelFormat format, SDL_Colorspace colorspace, int w, int h);
+extern bool SDL_SW_QueryYUVTexturePixels(SDL_SW_YUVTexture *swdata, void **pixels, int *pitch);
+extern bool SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect, const void *pixels, int pitch);
+extern bool SDL_SW_UpdateYUVTexturePlanar(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect,
+                                         const Uint8 *Yplane, int Ypitch,
+                                         const Uint8 *Uplane, int Upitch,
+                                         const Uint8 *Vplane, int Vpitch);
+extern bool SDL_SW_UpdateNVTexturePlanar(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect,
+                                         const Uint8 *Yplane, int Ypitch,
+                                         const Uint8 *UVplane, int UVpitch);
+extern bool SDL_SW_LockYUVTexture(SDL_SW_YUVTexture *swdata, const SDL_Rect *rect, void **pixels, int *pitch);
+extern void SDL_SW_UnlockYUVTexture(SDL_SW_YUVTexture *swdata);
+extern bool SDL_SW_CopyYUVToRGB(SDL_SW_YUVTexture *swdata, const SDL_Rect *srcrect, SDL_PixelFormat target_format, int w, int h, void *pixels, int pitch);
+extern void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture *swdata);
+
+#endif // SDL_yuv_sw_c_h_