view test/testvidinfo.c @ 937:1e6366bde299

Date: Tue, 27 Jul 2004 17:14:00 +0200 From: "Eckhard Stolberg" Subject: Controller names in SDL for Windows I'm working on an Atari 2600 emulator for different systems that uses the SDL. Some time ago someone created an adaptor that lets you use your old Atari controllers with your computer through the USB port. Some of the Atari controllers require special handling by the emulator, so it would be nice, if it would be possible to detect if any of the controllers connected to the computer is this adaptor. SDL would allow that with the SDL_JoystickName function, but unfortunately it doesn't work properly on Windows. On Linux and MacOSX this function returns the name of the controller, but on Windows you'll only get the name of the joystick driver. Most joysticks nowadays use the generic Microsoft driver, so they all return the same name. In an old MSDN article (http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnarinput/html/msdn_extdirect.asp) Microsoft describes how to read out the OEM controller names from the registry. I have implemented this for the SDL controller handler on Windows, and now reading the joystick name works properly there too.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Aug 2004 03:45:58 +0000
parents 05c551e5bc64
children 8d9bb0cf2c2a
line wrap: on
line source


/* Simple program -- figure out what kind of video display we have */

#include <stdlib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "SDL.h"

#define NUM_BLITS	10
#define NUM_UPDATES	500

#define FLAG_MASK	(SDL_HWSURFACE | SDL_FULLSCREEN | SDL_DOUBLEBUF | \
                         SDL_SRCCOLORKEY | SDL_SRCALPHA | SDL_RLEACCEL  | \
                         SDL_RLEACCELOK)

void PrintFlags(Uint32 flags)
{
	printf("0x%8.8x", (flags & FLAG_MASK));
	if ( flags & SDL_HWSURFACE ) {
		printf(" SDL_HWSURFACE");
	} else {
		printf(" SDL_SWSURFACE");
	}
	if ( flags & SDL_FULLSCREEN ) {
		printf(" | SDL_FULLSCREEN");
	}
	if ( flags & SDL_DOUBLEBUF ) {
		printf(" | SDL_DOUBLEBUF");
	}
	if ( flags & SDL_SRCCOLORKEY ) {
		printf(" | SDL_SRCCOLORKEY");
	}
	if ( flags & SDL_SRCALPHA ) {
		printf(" | SDL_SRCALPHA");
	}
	if ( flags & SDL_RLEACCEL ) {
		printf(" | SDL_RLEACCEL");
	}
	if ( flags & SDL_RLEACCELOK ) {
		printf(" | SDL_RLEACCELOK");
	}
}

int RunBlitTests(SDL_Surface *screen, SDL_Surface *bmp, int blitcount)
{
	int i, j;
	int maxx;
	int maxy;
	SDL_Rect dst;

	maxx = (int)screen->w - bmp->w + 1;
	maxy = (int)screen->h - bmp->h + 1;
	for ( i = 0; i < NUM_UPDATES; ++i ) {
		for ( j = 0; j < blitcount; ++j ) {
			if ( maxx ) {
				dst.x = rand() % maxx;
			} else {
				dst.x = 0;
			}
			if ( maxy ) {
				dst.y = rand() % maxy;
			} else {
				dst.y = 0;
			}
			dst.w = bmp->w;
			dst.h = bmp->h;
			SDL_BlitSurface(bmp, NULL, screen, &dst);
		}
		SDL_Flip(screen);
	}

	return i;
}

int RunModeTests(SDL_Surface *screen)
{
	Uint32 then, now;
	Uint32 frames;
	float seconds;
	int i;
	Uint8 r, g, b;
	SDL_Surface *bmp, *bmpcc, *tmp;
	SDL_Event event;

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

	/* First test fills and screen update speed */
	printf("Running color fill and fullscreen update test\n");
	then = SDL_GetTicks();
	frames = 0;
	for ( i = 0; i < 256; ++i ) {
		r = i;
		g = 0;
		b = 0;
		SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, r, g, b));
		SDL_Flip(screen);
		++frames;
	}
	for ( i = 0; i < 256; ++i ) {
		r = 0;
		g = i;
		b = 0;
		SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, r, g, b));
		SDL_Flip(screen);
		++frames;
	}
	for ( i = 0; i < 256; ++i ) {
		r = 0;
		g = 0;
		b = i;
		SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, r, g, b));
		SDL_Flip(screen);
		++frames;
	}
	now = SDL_GetTicks();
	seconds = (float)(now - then) / 1000.0f;
	if ( seconds > 0.0f ) {
		printf("%d fills and flips in %2.2f seconds, %2.2f FPS\n", frames, seconds, (float)frames / seconds);
	} else {
		printf("%d fills and flips in zero seconds!n", frames);
	}

        /* clear the screen after fill test */
        SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
	SDL_Flip(screen);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

        /* run the generic blit test */
	bmp = SDL_LoadBMP("sample.bmp");
	if ( ! bmp ) {
		printf("Couldn't load sample.bmp: %s\n", SDL_GetError());
		return 0;
	}
	printf("Running freshly loaded blit test: %dx%d at %d bpp, flags: ",
		bmp->w, bmp->h, bmp->format->BitsPerPixel);
	PrintFlags(bmp->flags);
	printf("\n");
	then = SDL_GetTicks();
	frames = RunBlitTests(screen, bmp, NUM_BLITS);
	now = SDL_GetTicks();
	seconds = (float)(now - then) / 1000.0f;
	if ( seconds > 0.0f ) {
		printf("%d blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
	} else {
		printf("%d blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
	}

        /* clear the screen after blit test */
        SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
	SDL_Flip(screen);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

        /* run the colorkeyed blit test */
	bmpcc = SDL_LoadBMP("sample.bmp");
	if ( ! bmpcc ) {
		printf("Couldn't load sample.bmp: %s\n", SDL_GetError());
		return 0;
	}
	printf("Running freshly loaded cc blit test: %dx%d at %d bpp, flags: ",
		bmpcc->w, bmpcc->h, bmpcc->format->BitsPerPixel);
        SDL_SetColorKey(bmpcc, SDL_SRCCOLORKEY | SDL_RLEACCEL, *(Uint8 *)bmpcc->pixels);

	PrintFlags(bmpcc->flags);
	printf("\n");
	then = SDL_GetTicks();
	frames = RunBlitTests(screen, bmpcc, NUM_BLITS);
	now = SDL_GetTicks();
	seconds = (float)(now - then) / 1000.0f;
	if ( seconds > 0.0f ) {
		printf("%d cc blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
	} else {
		printf("%d cc blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
	}

        /* clear the screen after cc blit test */
        SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
	SDL_Flip(screen);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

        /* run the generic blit test */
	tmp = bmp;
	bmp = SDL_DisplayFormat(bmp);
	SDL_FreeSurface(tmp);
	if ( ! bmp ) {
		printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
		return 0;
	}
	printf("Running display format blit test: %dx%d at %d bpp, flags: ",
		bmp->w, bmp->h, bmp->format->BitsPerPixel);
	PrintFlags(bmp->flags);
	printf("\n");
	then = SDL_GetTicks();
	frames = RunBlitTests(screen, bmp, NUM_BLITS);
	now = SDL_GetTicks();
	seconds = (float)(now - then) / 1000.0f;
	if ( seconds > 0.0f ) {
		printf("%d blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
	} else {
		printf("%d blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
	}

        /* clear the screen after blit test */
        SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
	SDL_Flip(screen);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

        /* run the colorkeyed blit test */
	tmp = bmpcc;
	bmpcc = SDL_DisplayFormat(bmpcc);
	SDL_FreeSurface(tmp);
	if ( ! bmpcc ) {
		printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
		return 0;
	}
	printf("Running display format cc blit test: %dx%d at %d bpp, flags: ",
		bmpcc->w, bmpcc->h, bmpcc->format->BitsPerPixel);
	PrintFlags(bmpcc->flags);
	printf("\n");
	then = SDL_GetTicks();
	frames = RunBlitTests(screen, bmpcc, NUM_BLITS);
	now = SDL_GetTicks();
	seconds = (float)(now - then) / 1000.0f;
	if ( seconds > 0.0f ) {
		printf("%d cc blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
	} else {
		printf("%d cc blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
	}

        /* clear the screen after cc blit test */
        SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
	SDL_Flip(screen);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

        /* run the alpha blit test only if screen bpp>8 */
        if (bmp->format->BitsPerPixel>8)
        {
		SDL_FreeSurface(bmp);
                bmp = SDL_LoadBMP("sample.bmp");
		SDL_SetAlpha(bmp, SDL_SRCALPHA, 85); /* 85 - 33% alpha */
		tmp = bmp;
		bmp = SDL_DisplayFormat(bmp);
		SDL_FreeSurface(tmp);
		if ( ! bmp ) {
			printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
			return 0;
		}
		printf("Running display format alpha blit test: %dx%d at %d bpp, flags: ",
			bmp->w, bmp->h, bmp->format->BitsPerPixel);
		PrintFlags(bmp->flags);
		printf("\n");
		then = SDL_GetTicks();
		frames = RunBlitTests(screen, bmp, NUM_BLITS);
		now = SDL_GetTicks();
		seconds = (float)(now - then) / 1000.0f;
		if ( seconds > 0.0f ) {
			printf("%d alpha blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
		} else {
			printf("%d alpha blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
		}
	}

        /* clear the screen after alpha blit test */
        SDL_FillRect(screen, NULL, SDL_MapRGB(screen->format, 0, 0, 0));
	SDL_Flip(screen);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}

        /* run the cc+alpha blit test only if screen bpp>8 */
        if (bmp->format->BitsPerPixel>8)
        {
		SDL_FreeSurface(bmpcc);
                bmpcc = SDL_LoadBMP("sample.bmp");
		SDL_SetAlpha(bmpcc, SDL_SRCALPHA, 85); /* 85 - 33% alpha */
                SDL_SetColorKey(bmpcc, SDL_SRCCOLORKEY | SDL_RLEACCEL, *(Uint8 *)bmpcc->pixels);
		tmp = bmpcc;
		bmpcc = SDL_DisplayFormat(bmpcc);
		SDL_FreeSurface(tmp);
		if ( ! bmpcc ) {
			printf("Couldn't convert sample.bmp: %s\n", SDL_GetError());
			return 0;
		}
		printf("Running display format cc+alpha blit test: %dx%d at %d bpp, flags: ",
			bmpcc->w, bmpcc->h, bmpcc->format->BitsPerPixel);
		PrintFlags(bmpcc->flags);
		printf("\n");
		then = SDL_GetTicks();
		frames = RunBlitTests(screen, bmpcc, NUM_BLITS);
		now = SDL_GetTicks();
		seconds = (float)(now - then) / 1000.0f;
		if ( seconds > 0.0f ) {
			printf("%d cc+alpha blits / %d updates in %2.2f seconds, %2.2f FPS\n", NUM_BLITS*frames, frames, seconds, (float)frames / seconds);
		} else {
			printf("%d cc+alpha blits / %d updates in zero seconds!\n", NUM_BLITS*frames, frames);
		}
	}

	SDL_FreeSurface(bmpcc);
	SDL_FreeSurface(bmp);

	while ( SDL_PollEvent(&event) ) {
		if ( event.type == SDL_KEYDOWN )
			return 0;
	}
	return 1;
}

void RunVideoTests()
{
	static const struct {
		int w, h, bpp;
	} mode_list[] = {
		{ 640, 480, 8 }, { 640, 480, 16 }, { 640, 480, 32 },
		{ 800, 600, 8 }, { 800, 600, 16 }, { 800, 600, 32 },
		{ 1024, 768, 8 }, { 1024, 768, 16 }, { 1024, 768, 32 }
	};
	static const Uint32 flags[] = {
		(SDL_SWSURFACE),
		(SDL_SWSURFACE | SDL_FULLSCREEN),
		(SDL_HWSURFACE | SDL_FULLSCREEN),
		(SDL_HWSURFACE | SDL_FULLSCREEN | SDL_DOUBLEBUF)
	};
	int i, j;
	SDL_Surface *screen;

	/* Test out several different video mode combinations */
	SDL_WM_SetCaption("SDL Video Benchmark", "vidtest");
	SDL_ShowCursor(0);
	for ( i = 0; i < SDL_TABLESIZE(mode_list); ++i ) {
		for ( j = 0; j < SDL_TABLESIZE(flags); ++j ) {
			printf("===================================\n");
			printf("Setting video mode: %dx%d at %d bpp, flags: ",
			                          mode_list[i].w,
			                          mode_list[i].h,
			                          mode_list[i].bpp);
			PrintFlags(flags[j]);
			printf("\n");
			screen = SDL_SetVideoMode(mode_list[i].w,
			                          mode_list[i].h,
			                          mode_list[i].bpp,
			                          flags[j]);
			if ( ! screen ) {
				printf("Setting video mode failed: %s\n", SDL_GetError());
				continue;
			}
			if ( (screen->flags & FLAG_MASK) != flags[j] ) {
				printf("Flags didn't match: ");
				PrintFlags(screen->flags);
				printf("\n");
				continue;
			}
			if ( ! RunModeTests(screen) ) {
				return;
			}
		}
	}
}

int main(int argc, char *argv[])
{
	const SDL_VideoInfo *info;
	int i;
	SDL_Rect **modes;
	char driver[128];

	if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
		fprintf(stderr,
			"Couldn't initialize SDL: %s\n", SDL_GetError());
		exit(1);
	}
	if ( SDL_VideoDriverName(driver, sizeof(driver)) ) {
		printf("Video driver: %s\n", driver);
	}
	info = SDL_GetVideoInfo();
	printf(
"Current display: %d bits-per-pixel\n",info->vfmt->BitsPerPixel);
	if ( info->vfmt->palette == NULL ) {
		printf("	Red Mask = 0x%.8x\n", info->vfmt->Rmask);
		printf("	Green Mask = 0x%.8x\n", info->vfmt->Gmask);
		printf("	Blue Mask = 0x%.8x\n", info->vfmt->Bmask);
	}
	/* Print available fullscreen video modes */
	modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
	if ( modes == (SDL_Rect **)0 ) {
		printf("No available fullscreen video modes\n");
	} else
	if ( modes == (SDL_Rect **)-1 ) {
		printf("No special fullscreen video modes\n");
	} else {
		printf("Fullscreen video modes:\n");
		for ( i=0; modes[i]; ++i ) {
			printf("\t%dx%dx%d\n", modes[i]->w, modes[i]->h, info->vfmt->BitsPerPixel);
		}
	}
	if ( info->wm_available ) {
		printf("A window manager is available\n");
	}
	if ( info->hw_available ) {
		printf("Hardware surfaces are available (%dK video memory)\n",
			info->video_mem);
	}
	if ( info->blit_hw ) {
		printf(
"Copy blits between hardware surfaces are accelerated\n");
	}
	if ( info->blit_hw_CC ) {
		printf(
"Colorkey blits between hardware surfaces are accelerated\n");
	}
	if ( info->blit_hw_A ) {
		printf(
"Alpha blits between hardware surfaces are accelerated\n");
	}
	if ( info->blit_sw ) {
		printf(
"Copy blits from software surfaces to hardware surfaces are accelerated\n");
	}
	if ( info->blit_sw_CC ) {
		printf(
"Colorkey blits from software surfaces to hardware surfaces are accelerated\n");
	}
	if ( info->blit_sw_A ) {
		printf(
"Alpha blits from software surfaces to hardware surfaces are accelerated\n");
	}
	if ( info->blit_fill ) {
		printf(
"Color fills on hardware surfaces are accelerated\n");
	}

	if ( argv[1] && (strcmp(argv[1], "-benchmark") == 0) ) {
		RunVideoTests();
	}

	SDL_Quit();
	return(0);
}