Mercurial > sdl-ios-xcode
annotate test/testbitmap.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 | 609543e2b3a1 |
children | be9c9c8f6d53 |
rev | line source |
---|---|
0 | 1 |
2 /* Simple program: Test bitmap blits */ | |
3 | |
4 #include <stdio.h> | |
5 #include <stdlib.h> | |
6 #include <string.h> | |
7 | |
8 #include "SDL.h" | |
9 #include "picture.xbm" | |
10 | |
11 SDL_Surface *LoadXBM(SDL_Surface *screen, int w, int h, Uint8 *bits) | |
12 { | |
13 SDL_Surface *bitmap; | |
14 Uint8 *line; | |
15 | |
16 /* Allocate the bitmap */ | |
17 bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0); | |
18 if ( bitmap == NULL ) { | |
19 fprintf(stderr, "Couldn't allocate bitmap: %s\n", | |
20 SDL_GetError()); | |
21 return(NULL); | |
22 } | |
23 | |
24 /* Copy the pixels */ | |
25 line = (Uint8 *)bitmap->pixels; | |
26 w = (w+7)/8; | |
27 while ( h-- ) { | |
28 memcpy(line, bits, w); | |
29 /* X11 Bitmap images have the bits reversed */ | |
30 { int i, j; Uint8 *buf, byte; | |
31 for ( buf=line, i=0; i<w; ++i, ++buf ) { | |
32 byte = *buf; | |
33 *buf = 0; | |
34 for ( j=7; j>=0; --j ) { | |
35 *buf |= (byte&0x01)<<j; | |
36 byte >>= 1; | |
37 } | |
38 } | |
39 } | |
40 line += bitmap->pitch; | |
41 bits += w; | |
42 } | |
43 return(bitmap); | |
44 } | |
45 | |
46 int main(int argc, char *argv[]) | |
47 { | |
48 SDL_Surface *screen; | |
49 SDL_Surface *bitmap; | |
50 Uint8 video_bpp; | |
51 Uint32 videoflags; | |
52 Uint8 *buffer; | |
691
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
53 int i, k, done; |
0 | 54 SDL_Event event; |
691
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
55 Uint16 *buffer16; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
56 Uint16 color; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
57 Uint8 gradient; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
58 SDL_Color palette[256]; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
59 |
0 | 60 |
61 /* Initialize SDL */ | |
62 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { | |
63 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
64 exit(1); | |
65 } | |
66 atexit(SDL_Quit); | |
67 | |
68 video_bpp = 0; | |
69 videoflags = SDL_SWSURFACE; | |
70 while ( argc > 1 ) { | |
71 --argc; | |
72 if ( strcmp(argv[argc-1], "-bpp") == 0 ) { | |
73 video_bpp = atoi(argv[argc]); | |
74 --argc; | |
75 } else | |
76 if ( strcmp(argv[argc], "-warp") == 0 ) { | |
77 videoflags |= SDL_HWPALETTE; | |
78 } else | |
79 if ( strcmp(argv[argc], "-hw") == 0 ) { | |
80 videoflags |= SDL_HWSURFACE; | |
81 } else | |
82 if ( strcmp(argv[argc], "-fullscreen") == 0 ) { | |
83 videoflags |= SDL_FULLSCREEN; | |
84 } else { | |
85 fprintf(stderr, | |
86 "Usage: %s [-bpp N] [-warp] [-hw] [-fullscreen]\n", | |
87 argv[0]); | |
88 exit(1); | |
89 } | |
90 } | |
91 | |
92 /* Set 640x480 video mode */ | |
93 if ( (screen=SDL_SetVideoMode(640,480,video_bpp,videoflags)) == NULL ) { | |
94 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", | |
95 video_bpp, SDL_GetError()); | |
96 exit(2); | |
97 } | |
98 | |
691
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
99 if (video_bpp==8) { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
100 /* Set a gray colormap, reverse order from white to black */ |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
101 for ( i=0; i<256; ++i ) { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
102 palette[i].r = 255-i; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
103 palette[i].g = 255-i; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
104 palette[i].b = 255-i; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
105 } |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
106 SDL_SetColors(screen, palette, 0, 256); |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
107 } |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
108 |
0 | 109 /* Set the surface pixels and refresh! */ |
110 if ( SDL_LockSurface(screen) < 0 ) { | |
111 fprintf(stderr, "Couldn't lock the display surface: %s\n", | |
112 SDL_GetError()); | |
113 exit(2); | |
114 } | |
115 buffer=(Uint8 *)screen->pixels; | |
691
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
116 if (screen->format->BytesPerPixel!=2) { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
117 for ( i=0; i<screen->h; ++i ) { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
118 memset(buffer,(i*255)/screen->h, screen->pitch); |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
119 buffer += screen->pitch; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
120 } |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
121 } |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
122 else |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
123 { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
124 for ( i=0; i<screen->h; ++i ) { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
125 gradient=((i*255)/screen->h); |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
126 color = SDL_MapRGB(screen->format, gradient, gradient, gradient); |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
127 buffer16=(Uint16*)buffer; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
128 for (k=0; k<screen->w; k++) |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
129 { |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
130 *(buffer16+k)=color; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
131 } |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
132 buffer += screen->pitch; |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
133 } |
609543e2b3a1
Date: Fri, 15 Aug 2003 09:13:59 +0300
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
134 } |
0 | 135 SDL_UnlockSurface(screen); |
136 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
137 | |
138 /* Load the bitmap */ | |
139 bitmap = LoadXBM(screen, picture_width, picture_height, | |
140 (Uint8 *)picture_bits); | |
141 if ( bitmap == NULL ) { | |
142 exit(1); | |
143 } | |
144 | |
145 /* Wait for a keystroke */ | |
146 done = 0; | |
147 while ( !done ) { | |
148 /* Check for events */ | |
149 while ( SDL_PollEvent(&event) ) { | |
150 switch (event.type) { | |
151 case SDL_MOUSEBUTTONDOWN: { | |
152 SDL_Rect dst; | |
153 | |
154 dst.x = event.button.x - bitmap->w/2; | |
155 dst.y = event.button.y - bitmap->h/2; | |
156 dst.w = bitmap->w; | |
157 dst.h = bitmap->h; | |
158 SDL_BlitSurface(bitmap, NULL, | |
159 screen, &dst); | |
160 SDL_UpdateRects(screen,1,&dst); | |
161 } | |
162 break; | |
163 case SDL_KEYDOWN: | |
164 /* Any key press quits the app... */ | |
165 done = 1; | |
166 break; | |
167 case SDL_QUIT: | |
168 done = 1; | |
169 break; | |
170 default: | |
171 break; | |
172 } | |
173 } | |
174 } | |
175 SDL_FreeSurface(bitmap); | |
176 return(0); | |
177 } |