Date: Thu, 4 Dec 2003 07:48:40 +0200

From: "Mike Gorchak"
Subject: SDL/QNX6 new patch

Here in attachment my patch for the SDL/QNX6 again :) It contain non-crtitical/cosmetic fixes:

1. Fixed window centering at other than the first consoles.
2. Fixed window centering algorithm in case when window height or width are greater than the desktop resolution.
3. Fixed window positioning on other than the first consoles.
4. Fixed occasional input focus lost when switching to fullscreen.
5. Removed the Photon's default chroma color for the overlays, added RGB(12, 6, 12) color instead (very dark pink).
6. Added more checks to the YUV overlay code (fixed crashes during resolution mode switches).
7. Added support for Enter/Backspace keys in unicode mode (used by Maelstrom and by other games).
8. Fixed window restore/maximize function. It works, finally.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40754

README.QNX

 README by Mike Gorchak <mike@malva.ua>, <lestat@i.com.ua>
-Last changed at 12 Aug 2003.
+Last changed at 30 Sep 2003.
+
+======================================================================
+Table of Contents:
+
+1. OpenGL.
+2. Wheel and multi-button mouses.
+3. CDROM handling issues.
+4. Hardware video overlays.
+5. Shared library building.
+6. Some building issues.
+7. Environment variables.
 
 ======================================================================
 OpenGL:
@@ -14,7 +25,7 @@ below 6.1.0 are not supported.
 cially selected (QSSL made acceleration  only  for  Voodoo  boards  in
 fullscreen mode, sorry but I don't have this board  to  test  OpenGL -
 maybe it works or maybe not :)). If you  want  acceleration - you  can
-remove one line in the source code: find the  file SDL_ph_video.c  and
+remove one line in the source code: find the  file SDL_ph_image.c  and
 remove the following
 
     OGLAttrib[OGLargc++]=PHOGL_ATTRIB_FORCE_SW;
@@ -50,7 +61,7 @@ can't do anything about that, /dev/cd0 has brw------- permissions  and
 root:root rights.
 
 ======================================================================
-Video Overlays:
+Hardware video overlays:
 
     Overlays can flicker  during  window  movement,  resizing, etc. It
 happens because the photon driver updates the real window contents be-
@@ -77,8 +88,11 @@ Shared library building:
 script you must manually delete the libtool.m4 stuff from the acinclu-
 de.m4 file (it comes after the ESD detection code up to the end of the
 file), because the libtool stuff in the acinclude.m4 file is very  old
-and  doesn't  know  anything  about  QNX. Just   remove  it, then  run
-"libtoolize --force --copy" and after that run the autogen.sh script.
+in SDL distribution before the version 1.2.7 and doesn't know anything
+about QNX. SDL 1.2.7 distribution contain  the  new libtool.m4 script,
+but anyway  it  is  broken :), Just  remove  it, then  run "libtoolize
+--force --copy",  delete the file aclocal.m4 and after  that  run  the
+autogen.sh script.
 
 ======================================================================
 Some building issues:
@@ -107,3 +121,24 @@ x11 support, e.g.:
     ./configure  --with-sdl-prefix=/usr            \
                  --with-sdl-exec-prefix=/usr       \
                  --prefix=/usr --without-x
+
+======================================================================
+Environment variables:
+
+    Please note that the photon driver  is  sensible to the  following
+environmental variables:
+
+ * SDL_VIDEO_WINDOW_POS - can be  set in the "X,Y" format.  If X and Y
+coordinates are bigger than the current desktop resolution, then  win-
+dow positioning across  virtual  consoles is activated. If X and Y are
+smaller than the desktop resolution  then  window  positioning  in the
+current console is activated. The word "center" can be used instead of
+coordinates, it  produces  the  same  behavior  as  SDL_VIDEO_CENTERED
+environmental variable.
+
+ * SDL_VIDEO_CENTERED - if this environmental variable exists then the
+window centering is perfomed in the current virtual console.
+
+    The SDL_VIDEO_CENTERED enviromental variable has greater  priority
+than the SDL_VIDEO_WINDOW_POS in case if both variables  are  supplied
+to the application.

SDL.qpg.in

@@ -62,7 +62,7 @@
             </QPM:PackageDescription>
 
             <QPM:ProductDescription>
-               <QPM:ProductName>SDL</QPM:ProductName>
+               <QPM:ProductName>Simple DirectMedia Layer (SDL)</QPM:ProductName>
                <QPM:ProductIdentifier>SDL</QPM:ProductIdentifier>
                <QPM:ProductEmail>slouken@libsdl.org</QPM:ProductEmail>
                <QPM:VendorName>public</QPM:VendorName>
@@ -95,10 +95,11 @@
 
             <QPM:ContentDescription>
                <QPM:ContentTopic xmlmultiple="true">Software Development/Libraries and Extensions/C Libraries</QPM:ContentTopic>
-               <QPM:ContentKeyword>SDL, audio, graphics, demos, games, emulators, media, layer</QPM:ContentKeyword>
+               <QPM:ContentKeyword>SDL, audio, graphics, demos, games, emulators, direct, media, layer</QPM:ContentKeyword>
                <QPM:TargetOS>qnx6</QPM:TargetOS>
                <QPM:HostOS>none</QPM:HostOS>
                <QPM:DisplayEnvironment xmlmultiple="true">Photon</QPM:DisplayEnvironment>
+               <QPM:DisplayEnvironment xmlmultiple="true">Console</QPM:DisplayEnvironment>
                <QPM:TargetAudience xmlmultiple="true">Developer</QPM:TargetAudience>
                <QPM:TargetAudience xmlmultiple="true">User</QPM:TargetAudience>
             </QPM:ContentDescription>

configure.in

@@ -1582,7 +1582,9 @@ CheckDLOPEN()
 
         if test x$use_dlopen = xyes; then
             CFLAGS="$CFLAGS -DUSE_DLOPEN"
-            AC_CHECK_LIB(dl, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS -ldl", AC_CHECK_LIB(ltdl, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS -lltdl"))
+            AC_CHECK_LIB(c, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS",
+               AC_CHECK_LIB(dl, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS -ldl",
+                  AC_CHECK_LIB(ltdl, dlopen, SYSTEM_LIBS="$SYSTEM_LIBS -lltdl")))
         fi
     fi
 }

src/video/photon/SDL_ph_events.c

@@ -217,12 +217,12 @@ static int ph_DispatchEvent(_THIS)
                 set_motion_sensitivity(this, -1);
                 posted = SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
             }
-            /* request to quit */
+            /* quit request */
             else if (winEvent->event_f==Ph_WM_CLOSE)
             {
                 posted = SDL_PrivateQuit();
             }
-            /* request to hide/unhide */
+            /* hide/unhide request */
             else if (winEvent->event_f==Ph_WM_HIDE)
             {
                 if (currently_hided)
@@ -241,7 +241,7 @@ static int ph_DispatchEvent(_THIS)
             /* request to resize */
             else if (winEvent->event_f==Ph_WM_RESIZE)
             {
-                SDL_PrivateResize(winEvent->size.w, winEvent->size.h);
+                SDL_PrivateResize(winEvent->size.w+1, winEvent->size.h+1);
             }
             /* request to move */
             else if (winEvent->event_f==Ph_WM_MOVE)
@@ -250,6 +250,7 @@ static int ph_DispatchEvent(_THIS)
                 {
                    int lockedstate=current_overlay->hwdata->locked;
                    int chromastate=current_overlay->hwdata->ischromakey;
+                   int error;
                    SDL_Rect target;
 
                    current_overlay->hwdata->locked=1;
@@ -258,20 +259,25 @@ static int ph_DispatchEvent(_THIS)
                    target.w=current_overlay->hwdata->CurrentViewPort.size.w;
                    target.h=current_overlay->hwdata->CurrentViewPort.size.h;
                    current_overlay->hwdata->ischromakey=0;
-                   ph_DisplayYUVOverlay(this, current_overlay, &target);
+                   error=ph_DisplayYUVOverlay(this, current_overlay, &target);
+                   if (!error)
+                   {
                        current_overlay->hwdata->ischromakey=chromastate;
                        current_overlay->hwdata->locked=lockedstate;
                    }
                 }
-            /* request to maximize */
+            }
+            /* maximize request */
             else if (winEvent->event_f==Ph_WM_MAX)
             {
                 /* window already moved and resized here */
-                SDL_PrivateResize(winEvent->size.w-winEvent->pos.x, winEvent->size.h-winEvent->pos.y);
+                currently_maximized=1;
             }
-            /* request to restore */
+            /* restore request */
             else if (winEvent->event_f==Ph_WM_RESTORE)
             {
+                /* window already moved and resized here */
+                currently_maximized=0;
             }
         }
         break;
@@ -285,7 +291,7 @@ static int ph_DispatchEvent(_THIS)
                 {
                     rect = PhGetRects(event);
 
-                    for(i=0;i<event->num_rects;i++)
+                    for(i=0; i<event->num_rects; i++)
                     {
                         sdlrects[i].x = rect[i].ul.x;
                         sdlrects[i].y = rect[i].ul.y;
@@ -298,6 +304,7 @@ static int ph_DispatchEvent(_THIS)
                     if (current_overlay!=NULL)
                     {
                         int lockedstate=current_overlay->hwdata->locked;
+                        int error;
                         SDL_Rect target;
 
                         current_overlay->hwdata->locked=1;
@@ -306,13 +313,16 @@ static int ph_DispatchEvent(_THIS)
                         target.w=current_overlay->hwdata->CurrentViewPort.size.w;
                         target.h=current_overlay->hwdata->CurrentViewPort.size.h;
                         current_overlay->hwdata->forcedredraw=1;
-                        ph_DisplayYUVOverlay(this, current_overlay, &target);
+                        error=ph_DisplayYUVOverlay(this, current_overlay, &target);
+                        if (!error)
+                        {
                             current_overlay->hwdata->forcedredraw=0;
                             current_overlay->hwdata->locked=lockedstate;
                         }
                     }
                 }
             }
+        }
 	break;
 
         case Ph_EV_KEY:
@@ -355,6 +365,11 @@ static int ph_DispatchEvent(_THIS)
             }
         }
         break;
+        
+        case Ph_EV_INFO:
+        {
+        }
+        break;
     }
 
     return(posted);
@@ -542,8 +557,15 @@ SDL_keysym *ph_TranslateKey(PhKeyEvent_t *key, SDL_keysym *keysym)
 
         switch (keysym->scancode)
         {
+           /* Esc key */
            case 0x01: keysym->unicode = 27;
                       break;
+           /* BackSpace key */
+           case 0x0E: keysym->unicode = 127;
+                      break;
+           /* Enter key */
+           case 0x1C: keysym->unicode = 10;
+                      break;
            default:
                       utf8len = PhKeyToMb(utf8, key);
                       if (utf8len > 0)

src/video/photon/SDL_ph_video.c

@@ -186,7 +186,7 @@ static PtWidget_t *ph_CreateWindow(_THIS)
 {
     PtWidget_t *widget;
     
-    widget = PtCreateWidget(PtWindow, NULL, 0, 0);
+    widget = PtCreateWidget(PtWindow, NULL, 0, NULL);
 
     return widget;
 }
@@ -195,20 +195,28 @@ static int ph_SetupWindow(_THIS, int w, int h, int flags)
 {
     PtArg_t     args[32];
     PhPoint_t   pos = {0, 0};
+    PhDim_t*    olddim;
     PhDim_t     dim = {w, h};
+    PhRect_t    desktopextent;
     int         nargs = 0;
     const char* windowpos;
     const char* iscentered;
     int         x, y;
 
+    /* check if window size has been changed by Window Manager */
+    PtGetResource(window, Pt_ARG_DIM, &olddim, 0);
+    if ((olddim->w!=w) || (olddim->h!=h))
+    {
        PtSetArg(&args[nargs++], Pt_ARG_DIM, &dim, 0);
+    }
 
     if ((flags & SDL_RESIZABLE) == SDL_RESIZABLE)
     {
-        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_FALSE, Ph_WM_RESIZE | Ph_WM_CLOSE);
-        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_MAX | Ph_WM_RESTORE);
-        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_RESIZE | Ph_WM_MOVE | Ph_WM_MAX | Ph_WM_RESTORE | Ph_WM_CLOSE);
+        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_FALSE, Ph_WM_CLOSE);
+        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_MAX | Ph_WM_RESTORE | Ph_WM_RESIZE);
+        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_RESIZE | Ph_WM_MOVE | Ph_WM_CLOSE | Ph_WM_MAX | Ph_WM_RESTORE);
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_TRUE, Ph_WM_RENDER_RESIZE | Ph_WM_RENDER_MAX | Ph_WM_RENDER_COLLAPSE | Ph_WM_RENDER_RETURN);
+        PtSetArg(&args[nargs++], Pt_ARG_RESIZE_FLAGS, Pt_TRUE, Pt_RESIZE_XY_AS_REQUIRED);
     }
     else
     {
@@ -216,6 +224,7 @@ static int ph_SetupWindow(_THIS, int w, int h, int flags)
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_FALSE, Ph_WM_RESIZE | Ph_WM_MAX | Ph_WM_RESTORE);
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_MOVE | Ph_WM_CLOSE);
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_RENDER_FLAGS, Pt_FALSE, Ph_WM_RENDER_RESIZE | Ph_WM_RENDER_MAX | Ph_WM_RENDER_COLLAPSE | Ph_WM_RENDER_RETURN);
+        PtSetArg(&args[nargs++], Pt_ARG_RESIZE_FLAGS, Pt_FALSE, Pt_RESIZE_XY_AS_REQUIRED);
     }
 
     if (((flags & SDL_NOFRAME)==SDL_NOFRAME) || ((flags & SDL_FULLSCREEN)==SDL_FULLSCREEN))
@@ -240,39 +249,71 @@ static int ph_SetupWindow(_THIS, int w, int h, int flags)
     {
         PtSetArg(&args[nargs++], Pt_ARG_POS, &pos, 0);
         PtSetArg(&args[nargs++], Pt_ARG_BASIC_FLAGS, Pt_TRUE, Pt_BASIC_PREVENT_FILL);
-        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_FFRONT | Ph_WM_MAX);
+        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_FFRONT | Ph_WM_MAX | Ph_WM_TOFRONT | Ph_WM_CONSWITCH);
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISFRONT | Ph_WM_STATE_ISFOCUS | Ph_WM_STATE_ISALTKEY);
     }
     else
+    {
+        if (!currently_maximized)
         {
             windowpos = getenv("SDL_VIDEO_WINDOW_POS");
             iscentered = getenv("SDL_VIDEO_CENTERED");
 
             if ((iscentered) || ((windowpos) && (strcmp(windowpos, "center")==0)))
+            {
+                PhWindowQueryVisible(Ph_QUERY_CONSOLE, 0, 0, &desktopextent);
+                if (desktop_mode.width>w)
                 {
                     pos.x = (desktop_mode.width - w)/2;
+                }
+                if (desktop_mode.height>h)
+                {
                     pos.y = (desktop_mode.height - h)/2;
+                }
+
+                pos.x+=desktopextent.ul.x;
+                pos.y+=desktopextent.ul.y;
                 PtSetArg(&args[nargs++], Pt_ARG_POS, &pos, 0);
             }
             else
             {
                 if (windowpos)
                 {
-                if (sscanf(windowpos, "%d,%d", &x, &y) == 2 )
+                    if (sscanf(windowpos, "%d,%d", &x, &y) == 2)
                     {
-                    pos.x=x;
-                    pos.y=y;
+                        if ((x<desktop_mode.width) && (y<desktop_mode.height))
+                        {
+                            PhWindowQueryVisible(Ph_QUERY_CONSOLE, 0, 0, &desktopextent);
+                            pos.x=x+desktopextent.ul.x;
+                            pos.y=y+desktopextent.ul.y;
+                        }
                         PtSetArg(&args[nargs++], Pt_ARG_POS, &pos, 0);
                     }
                 }
             }
-
+        }
 
         PtSetArg(&args[nargs++], Pt_ARG_FILL_COLOR, Pg_BLACK, 0);
-        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_FALSE, Ph_WM_STATE_ISFRONT | Ph_WM_STATE_ISMAX | Ph_WM_STATE_ISALTKEY);
+        
+        /* if window is maximized render it as maximized */
+        if (currently_maximized)
+        {
+           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISMAX);
+        }
+        else
+        {
+           PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_FALSE, Ph_WM_STATE_ISMAX);
+        }
+
+        /* do not grab the keyboard by default */
+        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_FALSE, Ph_WM_STATE_ISALTKEY);
+
+        /* bring the focus to the window */
+        PtSetArg(&args[nargs++], Pt_ARG_WINDOW_STATE, Pt_TRUE, Ph_WM_STATE_ISFOCUS);
+
+        /* allow to catch hide events */
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_MANAGED_FLAGS, Pt_TRUE, Ph_WM_HIDE);
         PtSetArg(&args[nargs++], Pt_ARG_WINDOW_NOTIFY_FLAGS, Pt_TRUE, Ph_WM_HIDE);
-        PtSetArg(&args[nargs++], Pt_ARG_RESIZE_FLAGS, Pt_FALSE, Pt_RESIZE_XY_AS_REQUIRED);
     }
 
     PtSetResources(window, nargs, args);
@@ -386,6 +427,7 @@ static int ph_VideoInit(_THIS, SDL_PixelFormat *vformat)
          
     currently_fullscreen = 0;
     currently_hided = 0;
+    currently_maximized = 0;
     current_overlay = NULL;
 
     OCImage.direct_context = NULL;
@@ -396,7 +438,6 @@ static int ph_VideoInit(_THIS, SDL_PixelFormat *vformat)
     OCImage.FrameData0 = NULL;
     OCImage.FrameData1 = NULL;
     
-    
     this->info.wm_available = 1;
     
     return 0;

src/video/photon/SDL_ph_video.h

@@ -62,7 +62,8 @@ struct ColourMasks
 };
 
 /* Private display data */
-struct SDL_PrivateVideoData {
+struct SDL_PrivateVideoData
+{
     PgDisplaySettings_t mode_settings;	
     PtWidget_t *Window;                  /* used to handle input events */
     PhImage_t *image;	                 /* used to display image       */
@@ -102,6 +103,7 @@ struct SDL_PrivateVideoData {
 
     int currently_fullscreen;
     int currently_hided;            /* 1 - window hided (minimazed), 0 - normal    */
+    int currently_maximized;        /* 1 - window hided (minimazed), 0 - normal    */
 
     PhEvent_t* event;
     SDL_Overlay* overlay;
@@ -120,6 +122,7 @@ struct SDL_PrivateVideoData {
 #define syspalph             (this->hidden->syspalph)
 #define currently_fullscreen (this->hidden->currently_fullscreen)
 #define currently_hided      (this->hidden->currently_hided)
+#define currently_maximized  (this->hidden->currently_maximized)
 #define event                (this->hidden->event)
 #define current_overlay      (this->hidden->overlay)
 #define desktop_mode         (this->hidden->desktop_mode)

src/video/photon/SDL_ph_wm.c

@@ -43,9 +43,6 @@ static char rcsid =
 #include "SDL_ph_modes_c.h"
 #include "SDL_ph_wm_c.h"
 
-/* This is necessary for working properly with Enlightenment, etc. */
-#define USE_ICON_WINDOW
-
 void ph_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
 {
     return;

src/video/photon/SDL_phyuv.c

@@ -182,7 +182,9 @@ SDL_Overlay* ph_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SD
     overlay->hwdata->props.src_dim.w = width;
     overlay->hwdata->props.src_dim.h = height;
 
-    overlay->hwdata->chromakey = PgGetOverlayChromaColor();
+    /* overlay->hwdata->chromakey = PgGetOverlayChromaColor(); */
+    overlay->hwdata->chromakey = PgRGB(12, 6, 12); /* very dark pink color */
+    overlay->hwdata->props.color_key = overlay->hwdata->chromakey;
 
     PhAreaToRect(&overlay->hwdata->CurrentViewPort, &overlay->hwdata->props.viewport);
 
@@ -191,6 +193,7 @@ SDL_Overlay* ph_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SD
     if ((overlay->hwdata->ischromakey)&&(overlay->hwdata->chromakey))
     {
         overlay->hwdata->props.flags |= Pg_SCALER_PROP_CHROMA_ENABLE;
+        overlay->hwdata->props.flags |= Pg_SCALER_PROP_CHROMA_SPECIFY_KEY_MASK;
     } 
     else
     {
@@ -286,7 +289,7 @@ int ph_LockYUVOverlay(_THIS, SDL_Overlay* overlay)
 {
     if (overlay == NULL)
     {
-        return 0;
+        return -1;
     }
 
     overlay->hwdata->locked = 1;
@@ -406,9 +409,9 @@ int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
         switch(rtncode)
         {
             case -1:
-                     SDL_SetError("PgConfigScalerChannel failed\n");
+                     SDL_SetError("PgConfigScalerChannel() function failed\n");
                      SDL_FreeYUVOverlay(overlay);
-                     return (0);
+                     return -1;
             case 1:
                      grab_ptrs2(overlay->hwdata->channel, overlay->hwdata->FrameData0, overlay->hwdata->FrameData1);
                      break;

test/testoverlay2.c

@@ -275,6 +275,7 @@ int main(int argc, char **argv)
     SDL_Event event;
     Uint32 lastftick;
     int paused=0;
+    int resized=0;
     int i;
     int fps=12;
     int fpsdelay;
@@ -505,6 +506,10 @@ int main(int argc, char **argv)
                      screen=SDL_SetVideoMode(event.resize.w, event.resize.h, 0, SDL_RESIZABLE | SDL_SWSURFACE);
                      overlayrect.w=event.resize.w;
                      overlayrect.h=event.resize.h;
+                     if (paused)
+                     {
+                         resized=1;
+                     }
                      break;
                 case SDL_KEYDOWN:
                      if (event.key.keysym.sym == SDLK_SPACE)
@@ -526,9 +531,9 @@ int main(int argc, char **argv)
             }
         }
 
-        if (!paused)
+        if ((!paused)||(resized))
         {
-            if ((SDL_GetTicks()-lastftick)>fpsdelay)
+            if (((SDL_GetTicks()-lastftick)>fpsdelay)||(resized))
             {
                 lastftick=SDL_GetTicks();
 
@@ -552,12 +557,19 @@ int main(int argc, char **argv)
                 }
 
                 SDL_DisplayYUVOverlay(overlay, &overlayrect);
+                if (!resized)
+                {
                     i++;
                     if (i==10)
                     {
                         i=0;
                     }
                 }
+                else
+                {
+                    resized=0;
+                }
+            }
         }
         /* kind of timeslice to OS */
         SDL_Delay(1);

test/testsprite.c

@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
+#include <math.h>
 #include <time.h>
 
 #include "SDL.h"