Mercurial > sdl-ios-xcode
view test/testoverlay.c @ 615:7ec821f3cbd0
Date: Thu, 17 Apr 2003 23:27:34 -0400
From: Darrell Walisser
Subject: Yet another OS X cursor bug
The synopsis:
1. Call SDL_ShowCursor(0);
2. Call SDL_SetVideoMode();
3. Call SDL_GetEvent();
3. Call SDL_ShowCursor(1);
The result: Sometimes the cursor doesn't come back! Ack! Oddly enough,
it does come back when mousing over the dock or clicking in the menu
bar. But that's besides the point.
The reason why this is happening is a flaw in the handling of
activation/deactivation events. The short explanation is that the
HideCursor() and ShowCursor() calls must be balanced, but if the cursor
was initially hidden, HideCursor() was called again on the activate
event - so now the next ShowCursor() fails (as does the next, and the
next, for some reason).
So, here's the patch. All it does is keep track of the
HideCursor()/ShowCursor() calls so that they will always be balanced.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 20 Apr 2003 05:41:16 +0000 |
parents | 6399f4e90211 |
children | be9c9c8f6d53 |
line wrap: on
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/* Bring up a window and play with it */ #include <stdlib.h> #include <stdio.h> #include <string.h> #define BENCHMARK_SDL #define NOTICE(X) printf("%s", X); #define WINDOW_WIDTH 640 #define WINDOW_HEIGHT 480 #include "SDL.h" SDL_Surface *screen, *pic; SDL_Overlay *overlay; int scale; int monochrome; int luminance; int w, h; /* NOTE: These RGB conversion functions are not intended for speed, only as examples. */ void RGBtoYUV(Uint8 *rgb, int *yuv, int monochrome, int luminance) { int i; if (monochrome) { #if 1 /* these are the two formulas that I found on the FourCC site... */ yuv[0] = 0.299*rgb[0] + 0.587*rgb[1] + 0.114*rgb[2]; yuv[1] = 128; yuv[2] = 128; #else yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16; yuv[1] = 128; yuv[2] = 128; #endif } else { #if 1 /* these are the two formulas that I found on the FourCC site... */ yuv[0] = 0.299*rgb[0] + 0.587*rgb[1] + 0.114*rgb[2]; yuv[1] = (rgb[2]-yuv[0])*0.565 + 128; yuv[2] = (rgb[0]-yuv[0])*0.713 + 128; #else yuv[0] = (0.257 * rgb[0]) + (0.504 * rgb[1]) + (0.098 * rgb[2]) + 16; yuv[1] = 128 - (0.148 * rgb[0]) - (0.291 * rgb[1]) + (0.439 * rgb[2]); yuv[2] = 128 + (0.439 * rgb[0]) - (0.368 * rgb[1]) - (0.071 * rgb[2]); #endif } if (luminance!=100) { yuv[0]=yuv[0]*luminance/100; if (yuv[0]>255) yuv[0]=255; } /* clamp values...if you need to, we don't seem to have a need */ /* for(i=0;i<3;i++) { if(yuv[i]<0) yuv[i]=0; if(yuv[i]>255) yuv[i]=255; } */ } ConvertRGBtoYV12(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance) { int x,y; int yuv[3]; Uint8 *p,*op[3]; SDL_LockSurface(s); SDL_LockYUVOverlay(o); /* Black initialization */ /* memset(o->pixels[0],0,o->pitches[0]*o->h); memset(o->pixels[1],128,o->pitches[1]*((o->h+1)/2)); memset(o->pixels[2],128,o->pitches[2]*((o->h+1)/2)); */ /* Convert */ for(y=0; y<s->h && y<o->h; y++) { p=((Uint8 *) s->pixels)+s->pitch*y; op[0]=o->pixels[0]+o->pitches[0]*y; op[1]=o->pixels[1]+o->pitches[1]*(y/2); op[2]=o->pixels[2]+o->pitches[2]*(y/2); for(x=0; x<s->w && x<o->w; x++) { RGBtoYUV(p, yuv, monochrome, luminance); *(op[0]++)=yuv[0]; if(x%2==0 && y%2==0) { *(op[1]++)=yuv[2]; *(op[2]++)=yuv[1]; } p+=s->format->BytesPerPixel; } } SDL_UnlockYUVOverlay(o); SDL_UnlockSurface(s); } ConvertRGBtoIYUV(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance) { int x,y; int yuv[3]; Uint8 *p,*op[3]; SDL_LockSurface(s); SDL_LockYUVOverlay(o); /* Black initialization */ /* memset(o->pixels[0],0,o->pitches[0]*o->h); memset(o->pixels[1],128,o->pitches[1]*((o->h+1)/2)); memset(o->pixels[2],128,o->pitches[2]*((o->h+1)/2)); */ /* Convert */ for(y=0; y<s->h && y<o->h; y++) { p=((Uint8 *) s->pixels)+s->pitch*y; op[0]=o->pixels[0]+o->pitches[0]*y; op[1]=o->pixels[1]+o->pitches[1]*(y/2); op[2]=o->pixels[2]+o->pitches[2]*(y/2); for(x=0; x<s->w && x<o->w; x++) { RGBtoYUV(p,yuv, monochrome, luminance); *(op[0]++)=yuv[0]; if(x%2==0 && y%2==0) { *(op[1]++)=yuv[1]; *(op[2]++)=yuv[2]; } p+=s->format->BytesPerPixel; } } SDL_UnlockYUVOverlay(o); SDL_UnlockSurface(s); } ConvertRGBtoUYVY(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance) { int x,y; int yuv[3]; Uint8 *p,*op; SDL_LockSurface(s); SDL_LockYUVOverlay(o); for(y=0; y<s->h && y<o->h; y++) { p=((Uint8 *) s->pixels)+s->pitch*y; op=o->pixels[0]+o->pitches[0]*y; for(x=0; x<s->w && x<o->w; x++) { RGBtoYUV(p, yuv, monochrome, luminance); if(x%2==0) { *(op++)=yuv[1]; *(op++)=yuv[0]; *(op++)=yuv[2]; } else *(op++)=yuv[0]; p+=s->format->BytesPerPixel; } } SDL_UnlockYUVOverlay(o); SDL_UnlockSurface(s); } ConvertRGBtoYVYU(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance) { int x,y; int yuv[3]; Uint8 *p,*op; SDL_LockSurface(s); SDL_LockYUVOverlay(o); for(y=0; y<s->h && y<o->h; y++) { p=((Uint8 *) s->pixels)+s->pitch*y; op=o->pixels[0]+o->pitches[0]*y; for(x=0; x<s->w && x<o->w; x++) { RGBtoYUV(p,yuv, monochrome, luminance); if(x%2==0) { *(op++)=yuv[0]; *(op++)=yuv[2]; op[1]=yuv[1]; } else { *op=yuv[0]; op+=2; } p+=s->format->BytesPerPixel; } } SDL_UnlockYUVOverlay(o); SDL_UnlockSurface(s); } ConvertRGBtoYUY2(SDL_Surface *s, SDL_Overlay *o, int monochrome, int luminance) { int x,y; int yuv[3]; Uint8 *p,*op; SDL_LockSurface(s); SDL_LockYUVOverlay(o); for(y=0; y<s->h && y<o->h; y++) { p=((Uint8 *) s->pixels)+s->pitch*y; op=o->pixels[0]+o->pitches[0]*y; for(x=0; x<s->w && x<o->w; x++) { RGBtoYUV(p,yuv, monochrome, luminance); if(x%2==0) { *(op++)=yuv[0]; *(op++)=yuv[1]; op[1]=yuv[2]; } else { *op=yuv[0]; op+=2; } p+=s->format->BytesPerPixel; } } SDL_UnlockYUVOverlay(o); SDL_UnlockSurface(s); } void Draw() { SDL_Rect rect; int i; int disp; if(!scale) { rect.w=overlay->w; rect.h=overlay->h; for(i=0; i<h-rect.h && i<w-rect.w; i++) { rect.x=i; rect.y=i; SDL_DisplayYUVOverlay(overlay,&rect); } } else { rect.w=overlay->w/2; rect.h=overlay->h/2; rect.x=(w-rect.w)/2; rect.y=(h-rect.h)/2; disp=rect.y-1; for(i=0; i<disp; i++) { rect.w+=2; rect.h+=2; rect.x--; rect.y--; SDL_DisplayYUVOverlay(overlay,&rect); } } printf("Displayed %d times.\n",i); } static void PrintUsage(char *argv0) { fprintf(stderr, "Usage: %s [arg] [arg] [arg] ...\n", argv0); fprintf(stderr, "Where 'arg' is one of:\n"); fprintf(stderr, " -delay <seconds>\n"); fprintf(stderr, " -width <pixels>\n"); fprintf(stderr, " -height <pixels>\n"); fprintf(stderr, " -bpp <bits>\n"); fprintf(stderr, " -format <fmt> (one of the: YV12, IYUV, YUY2, UYVY, YVYU)\n"); fprintf(stderr, " -hw\n"); fprintf(stderr, " -flip\n"); fprintf(stderr, " -scale (test scaling features, from 50%% upto window size)\n"); fprintf(stderr, " -mono (use monochromatic RGB2YUV conversion)\n"); fprintf(stderr, " -lum <perc> (use luminance correction during RGB2YUV conversion,\n"); fprintf(stderr, " from 0%% to unlimited, normal is 100%%)\n"); fprintf(stderr, " -help (shows this help)\n"); fprintf(stderr, " -fullscreen (test overlay in fullscreen mode)\n"); } int main(int argc, char **argv) { char *argv0 = argv[0]; int flip; int delay; int desired_bpp; Uint32 video_flags, overlay_format; char *bmpfile; #ifdef BENCHMARK_SDL Uint32 then, now; #endif int i; /* Set default options and check command-line */ flip = 0; scale=0; monochrome=0; luminance=100; delay = 1; w = WINDOW_WIDTH; h = WINDOW_HEIGHT; desired_bpp = 0; video_flags = 0; overlay_format = SDL_YV12_OVERLAY; while ( argc > 1 ) { if ( strcmp(argv[1], "-delay") == 0 ) { if ( argv[2] ) { delay = atoi(argv[2]); argv += 2; argc -= 2; } else { fprintf(stderr, "The -delay option requires an argument\n"); exit(1); } } else if ( strcmp(argv[1], "-width") == 0 ) { if ( argv[2] && ((w = atoi(argv[2])) > 0) ) { argv += 2; argc -= 2; } else { fprintf(stderr, "The -width option requires an argument\n"); exit(1); } } else if ( strcmp(argv[1], "-height") == 0 ) { if ( argv[2] && ((h = atoi(argv[2])) > 0) ) { argv += 2; argc -= 2; } else { fprintf(stderr, "The -height option requires an argument\n"); exit(1); } } else if ( strcmp(argv[1], "-bpp") == 0 ) { if ( argv[2] ) { desired_bpp = atoi(argv[2]); argv += 2; argc -= 2; } else { fprintf(stderr, "The -bpp option requires an argument\n"); exit(1); } } else if ( strcmp(argv[1], "-lum") == 0 ) { if ( argv[2] ) { luminance = atoi(argv[2]); argv += 2; argc -= 2; } else { fprintf(stderr, "The -lum option requires an argument\n"); exit(1); } } else if ( strcmp(argv[1], "-format") == 0 ) { if ( argv[2] ) { if(!strcmp(argv[2],"YV12")) overlay_format = SDL_YV12_OVERLAY; else if(!strcmp(argv[2],"IYUV")) overlay_format = SDL_IYUV_OVERLAY; else if(!strcmp(argv[2],"YUY2")) overlay_format = SDL_YUY2_OVERLAY; else if(!strcmp(argv[2],"UYVY")) overlay_format = SDL_UYVY_OVERLAY; else if(!strcmp(argv[2],"YVYU")) overlay_format = SDL_YVYU_OVERLAY; else { fprintf(stderr, "The -format option %s is not recognized\n",argv[2]); exit(1); } argv += 2; argc -= 2; } else { fprintf(stderr, "The -format option requires an argument\n"); exit(1); } } else if ( strcmp(argv[1], "-hw") == 0 ) { video_flags |= SDL_HWSURFACE; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-flip") == 0 ) { video_flags |= SDL_DOUBLEBUF; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-scale") == 0 ) { scale = 1; argv += 1; argc -= 1; } else if ( strcmp(argv[1], "-mono") == 0 ) { monochrome = 1; argv += 1; argc -= 1; } else if (( strcmp(argv[1], "-help") == 0 ) || (strcmp(argv[1], "-h") == 0)) { PrintUsage(argv0); exit(1); } else if ( strcmp(argv[1], "-fullscreen") == 0 ) { video_flags |= SDL_FULLSCREEN; argv += 1; argc -= 1; } else break; } if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); exit(1); } atexit(SDL_Quit); /* Clean up on exit */ /* Initialize the display */ screen = SDL_SetVideoMode(w, h, desired_bpp, video_flags); if ( screen == NULL ) { fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n", w, h, desired_bpp, SDL_GetError()); exit(1); } printf("Set%s %dx%dx%d mode\n", screen->flags & SDL_FULLSCREEN ? " fullscreen" : "", screen->w, screen->h, screen->format->BitsPerPixel); printf("(video surface located in %s memory)\n", (screen->flags&SDL_HWSURFACE) ? "video" : "system"); if ( screen->flags & SDL_DOUBLEBUF ) { printf("Double-buffering enabled\n"); flip = 1; } /* Set the window manager title bar */ SDL_WM_SetCaption("SDL test overlay", "testoverlay"); /* Load picture */ bmpfile=(argv[1]?argv[1]:"sample.bmp"); pic = SDL_LoadBMP(bmpfile); if ( pic == NULL ) { fprintf(stderr, "Couldn't load %s: %s\n", bmpfile, SDL_GetError()); exit(1); } /* Convert the picture to 32bits, for easy conversion */ { SDL_Surface *newsurf; SDL_PixelFormat format; format.palette=NULL; format.BitsPerPixel=32; format.BytesPerPixel=4; #if SDL_BYTEORDER == SDL_LIL_ENDIAN format.Rshift=0; format.Gshift=8; format.Bshift=16; #else format.Rshift=24; format.Gshift=16; format.Bshift=8; #endif format.Ashift=0; format.Rmask=0xff<<format.Rshift; format.Gmask=0xff<<format.Gshift; format.Bmask=0xff<<format.Bshift; format.Amask=0; format.Rloss=0; format.Gloss=0; format.Bloss=0; format.Aloss=8; format.colorkey=0; format.alpha=0; newsurf=SDL_ConvertSurface(pic, &format, SDL_SWSURFACE); if(!newsurf) { fprintf(stderr, "Couldn't convert picture to 32bits RGB: %s\n", SDL_GetError()); exit(1); } SDL_FreeSurface(pic); pic=newsurf; } /* Create the overlay */ overlay = SDL_CreateYUVOverlay(pic->w, pic->h, overlay_format, screen); if ( overlay == NULL ) { fprintf(stderr, "Couldn't create overlay: %s\n", SDL_GetError()); exit(1); } printf("Created %dx%dx%d %s %s overlay\n",overlay->w,overlay->h,overlay->planes, overlay->hw_overlay?"hardware":"software", overlay->format==SDL_YV12_OVERLAY?"YV12": overlay->format==SDL_IYUV_OVERLAY?"IYUV": overlay->format==SDL_YUY2_OVERLAY?"YUY2": overlay->format==SDL_UYVY_OVERLAY?"UYVY": overlay->format==SDL_YVYU_OVERLAY?"YVYU": "Unknown"); for(i=0; i<overlay->planes; i++) { printf(" plane %d: pitch=%d\n", i, overlay->pitches[i]); } /* Convert to YUV, and draw to the overlay */ #ifdef BENCHMARK_SDL then = SDL_GetTicks(); #endif switch(overlay->format) { case SDL_YV12_OVERLAY: ConvertRGBtoYV12(pic,overlay,monochrome,luminance); break; case SDL_UYVY_OVERLAY: ConvertRGBtoUYVY(pic,overlay,monochrome,luminance); break; case SDL_YVYU_OVERLAY: ConvertRGBtoYVYU(pic,overlay,monochrome,luminance); break; case SDL_YUY2_OVERLAY: ConvertRGBtoYUY2(pic,overlay,monochrome,luminance); break; case SDL_IYUV_OVERLAY: ConvertRGBtoIYUV(pic,overlay,monochrome,luminance); break; default: printf("cannot convert RGB picture to obtained YUV format!\n"); exit(1); break; } #ifdef BENCHMARK_SDL now = SDL_GetTicks(); printf("Conversion Time: %d milliseconds\n", now-then); #endif /* Do all the drawing work */ #ifdef BENCHMARK_SDL then = SDL_GetTicks(); #endif Draw(); #ifdef BENCHMARK_SDL now = SDL_GetTicks(); printf("Time: %d milliseconds\n", now-then); #endif SDL_Delay(delay*1000); return(0); }