Add and update include guards

Include guards in most changed files were missing, I added them keeping
the same style as other SDL files. In some cases I moved the include
guards around to be the first thing the header has to take advantage of
any possible improvements compiler may have for inclusion guards.

src/render/SDL_yuv_sw_c.h

@@ -18,6 +18,10 @@
      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"
 
 #include "SDL_video.h"
@@ -64,4 +68,6 @@ void SDL_SW_DestroyYUVTexture(SDL_SW_YUVTexture * swdata);
 #define USE_MMX_ASSEMBLY 1
 #endif
 
+#endif /* SDL_yuv_sw_c_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/opengl/SDL_shaders_gl.h

@@ -18,6 +18,10 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+
+#ifndef SDL_shaders_gl_h_
+#define SDL_shaders_gl_h_
+
 #include "../../SDL_internal.h"
 
 /* OpenGL shader implementation */
@@ -44,4 +48,6 @@ extern GL_ShaderContext * GL_CreateShaderContext(void);
 extern void GL_SelectShader(GL_ShaderContext *ctx, GL_Shader shader);
 extern void GL_DestroyShaderContext(GL_ShaderContext *ctx);
 
+#endif /* SDL_shaders_gl_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_blendfillrect.h

@@ -18,10 +18,16 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+
+#ifndef SDL_blendfillrect_h_
+#define SDL_blendfillrect_h_
+
 #include "../../SDL_internal.h"
 
 
 extern int SDL_BlendFillRect(SDL_Surface * dst, const SDL_Rect * rect, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
 extern int SDL_BlendFillRects(SDL_Surface * dst, const SDL_Rect * rects, int count, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
 
+#endif /* SDL_blendfillrect_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_blendline.h

@@ -18,10 +18,16 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+
+#ifndef SDL_blendline_h_
+#define SDL_blendline_h_
+
 #include "../../SDL_internal.h"
 
 
 extern int SDL_BlendLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
 extern int SDL_BlendLines(SDL_Surface * dst, const SDL_Point * points, int count, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
 
+#endif /* SDL_blendline_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_blendpoint.h

@@ -18,10 +18,16 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+
+#ifndef SDL_blendpoint_h_
+#define SDL_blendpoint_h_
+
 #include "../../SDL_internal.h"
 
 
 extern int SDL_BlendPoint(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
 extern int SDL_BlendPoints(SDL_Surface * dst, const SDL_Point * points, int count, SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
 
+#endif /* SDL_blendpoint_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_drawline.h

@@ -18,10 +18,16 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+
+#ifndef SDL_drawline_h_
+#define SDL_drawline_h_
+
 #include "../../SDL_internal.h"
 
 
 extern int SDL_DrawLine(SDL_Surface * dst, int x1, int y1, int x2, int y2, Uint32 color);
 extern int SDL_DrawLines(SDL_Surface * dst, const SDL_Point * points, int count, Uint32 color);
 
+#endif /* SDL_drawline_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_drawpoint.h

@@ -18,10 +18,16 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
+
+#ifndef SDL_drawpoint_h_
+#define SDL_drawpoint_h_
+
 #include "../../SDL_internal.h"
 
 
 extern int SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color);
 extern int SDL_DrawPoints(SDL_Surface * dst, const SDL_Point * points, int count, Uint32 color);
 
+#endif /* SDL_drawpoint_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_render_sw_c.h

@@ -19,6 +19,11 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
+#ifndef SDL_render_sw_c_h_
+#define SDL_render_sw_c_h_
+
 extern SDL_Renderer * SW_CreateRendererForSurface(SDL_Surface * surface);
 
+#endif /* SDL_render_sw_c_h_ */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/render/software/SDL_rotate.h

@@ -19,6 +19,9 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
+#ifndef SDL_rotate_h_
+#define SDL_rotate_h_
+
 #ifndef MIN
 #define MIN(a,b)    (((a) < (b)) ? (a) : (b))
 #endif
@@ -26,3 +29,4 @@
 extern SDL_Surface *SDLgfx_rotateSurface(SDL_Surface * src, double angle, int centerx, int centery, int smooth, int flipx, int flipy, int dstwidth, int dstheight, double cangle, double sangle);
 extern void SDLgfx_rotozoomSurfaceSizeTrig(int width, int height, double angle, int *dstwidth, int *dstheight, double *cangle, double *sangle);
 
+#endif /* SDL_rotate_h_ */