aboutsummaryrefslogtreecommitdiffstats
path: root/distrib/sdl-1.2.15/src/video/caca/SDL_cacavideo.c
blob: 59a070ce7aa489d70fa5f2b977696b8d1aab0b0e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 2003  Sam Hocevar

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Hocevar
    sam@zoy.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id: libsdl-1.2.11-libcaca.patch,v 1.1 2006/09/18 16:06:06 mr_bones_ Exp $";
#endif

/* libcaca based SDL video driver implementation.
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>


#include "SDL.h"
#include "SDL_error.h"
#include "SDL_video.h"
#include "SDL_mouse.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"

#include "SDL_cacavideo.h"
#include "SDL_cacaevents_c.h"

#include <caca.h>
#ifdef CACA_API_VERSION_1
#include <caca0.h>
#endif

/* Initialization/Query functions */
static int Caca_VideoInit(_THIS, SDL_PixelFormat *vformat);
static SDL_Rect **Caca_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
static SDL_Surface *Caca_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
static void Caca_VideoQuit(_THIS);

/* Hardware surface functions */
static int Caca_AllocHWSurface(_THIS, SDL_Surface *surface);
static int Caca_LockHWSurface(_THIS, SDL_Surface *surface);
static int Caca_FlipHWSurface(_THIS, SDL_Surface *surface);
static void Caca_UnlockHWSurface(_THIS, SDL_Surface *surface);
static void Caca_FreeHWSurface(_THIS, SDL_Surface *surface);

/* Cache the VideoDevice struct */
static struct SDL_VideoDevice *local_this;

/* libcaca driver bootstrap functions */

static int Caca_Available(void)
{
	return 1; /* Always available ! */
}

static void Caca_DeleteDevice(SDL_VideoDevice *device)
{
	free(device->hidden);
	free(device);
}
static SDL_VideoDevice *Caca_CreateDevice(int devindex)
{
	SDL_VideoDevice *device;

	/* Initialize all variables that we clean on shutdown */
	device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
	if ( device ) {
		memset(device, 0, (sizeof *device));
		device->hidden = (struct SDL_PrivateVideoData *)
				malloc((sizeof *device->hidden));
	}
	if ( (device == NULL) || (device->hidden == NULL) ) {
		SDL_OutOfMemory();
		if ( device ) {
			free(device);
		}
		return(0);
	}
	memset(device->hidden, 0, (sizeof *device->hidden));

	/* Set the function pointers */
	device->VideoInit = Caca_VideoInit;
	device->ListModes = Caca_ListModes;
	device->SetVideoMode = Caca_SetVideoMode;
	device->CreateYUVOverlay = NULL;
	device->SetColors = NULL;
	device->UpdateRects = NULL;
	device->VideoQuit = Caca_VideoQuit;
	device->AllocHWSurface = Caca_AllocHWSurface;
	device->CheckHWBlit = NULL;
	device->FillHWRect = NULL;
	device->SetHWColorKey = NULL;
	device->SetHWAlpha = NULL;
	device->LockHWSurface = Caca_LockHWSurface;
	device->UnlockHWSurface = Caca_UnlockHWSurface;
	device->FlipHWSurface = NULL;
	device->FreeHWSurface = Caca_FreeHWSurface;
	device->SetCaption = NULL;
	device->SetIcon = NULL;
	device->IconifyWindow = NULL;
	device->GrabInput = NULL;
	device->GetWMInfo = NULL;
	device->InitOSKeymap = Caca_InitOSKeymap;
	device->PumpEvents = Caca_PumpEvents;

	device->free = Caca_DeleteDevice;

	return device;
}

VideoBootStrap CACA_bootstrap = {
	"caca", "Color ASCII Art Library",
	Caca_Available, Caca_CreateDevice
};

int Caca_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
	int i;

	/* Initialize all variables that we clean on shutdown */
	for ( i=0; i<SDL_NUMMODES; ++i ) {
		SDL_modelist[i] = malloc(sizeof(SDL_Rect));
		SDL_modelist[i]->x = SDL_modelist[i]->y = 0;
	}
	/* Modes sorted largest to smallest */
	SDL_modelist[0]->w = 1024; SDL_modelist[0]->h = 768;
	SDL_modelist[1]->w = 800; SDL_modelist[1]->h = 600;
	SDL_modelist[2]->w = 640; SDL_modelist[2]->h = 480;
	SDL_modelist[3]->w = 320; SDL_modelist[3]->h = 400;
	SDL_modelist[4]->w = 320; SDL_modelist[4]->h = 240;
	SDL_modelist[5]->w = 320; SDL_modelist[5]->h = 200;
	SDL_modelist[6] = NULL;

	Caca_mutex = SDL_CreateMutex();

	/* Initialize the library */
	if ( caca_init() != 0 ) {
		SDL_SetError("Unable to initialize libcaca");
		return(-1);
	}

	/* Initialize private variables */
	Caca_lastkey = 0;
	Caca_bitmap = NULL;
	Caca_buffer = NULL;

	local_this = this;

	/* Determine the screen depth (use default 8-bit depth) */
	vformat->BitsPerPixel = 8;
	vformat->BytesPerPixel = 1;

	/* We're done! */
	return(0);
}

SDL_Rect **Caca_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
     if(format->BitsPerPixel != 8)
 		return NULL;

	 if ( flags & SDL_FULLSCREEN ) {
		 return SDL_modelist;
	 } else {
		 return (SDL_Rect **) -1;
	 }
}

/* Various screen update functions available */
static void Caca_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);

SDL_Surface *Caca_SetVideoMode(_THIS, SDL_Surface *current,
				int width, int height, int bpp, Uint32 flags)
{
	if ( Caca_buffer ) {
		free( Caca_buffer );
		Caca_buffer = NULL;
	}

	if ( Caca_bitmap ) {
		caca_free_bitmap( Caca_bitmap );
		Caca_bitmap = NULL;
	}

	Caca_buffer = malloc(2 * ((width + 15) & ~15) * height);
	if ( ! Caca_buffer ) {
		SDL_SetError("Couldn't allocate buffer for requested mode");
		return(NULL);
	}

	memset(Caca_buffer, 0, 2 * ((width + 15) & ~15) * height);

	/* Allocate the new pixel format for the screen */
	if ( ! SDL_ReallocFormat(current, 16, 0xf800, 0x07e0, 0x001f, 0) ) {
		return(NULL);
	}

	/* Set up the new mode framebuffer */
	current->flags = SDL_FULLSCREEN;
	Caca_w = current->w = width;
	Caca_h = current->h = height;
	current->pitch = 2 * ((width + 15) & ~15);
	current->pixels = Caca_buffer;

	/* Create the libcaca bitmap */
	Caca_bitmap = caca_create_bitmap( 16, width, height, current->pitch, 0xf800, 0x07e0, 0x001f, 0x0000 );
	if ( ! Caca_bitmap ) {
		SDL_SetError("Couldn't allocate libcaca bitmap");
		return(NULL);
	}

	/* Set the blit function */
	this->UpdateRects = Caca_DirectUpdate;

	/* We're done */
	return(current);
}

/* We don't actually allow hardware surfaces other than the main one */
static int Caca_AllocHWSurface(_THIS, SDL_Surface *surface)
{
	return(-1);
}
static void Caca_FreeHWSurface(_THIS, SDL_Surface *surface)
{
	return;
}

/* We need to wait for vertical retrace on page flipped displays */
static int Caca_LockHWSurface(_THIS, SDL_Surface *surface)
{
	/* TODO ? */
	return(0);
}
static void Caca_UnlockHWSurface(_THIS, SDL_Surface *surface)
{
	return;
}

/* FIXME: How is this done with libcaca? */
static int Caca_FlipHWSurface(_THIS, SDL_Surface *surface)
{
	SDL_mutexP(Caca_mutex);
	caca_refresh();
	SDL_mutexV(Caca_mutex);
	return(0);
}

static void Caca_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
{
	SDL_mutexP(Caca_mutex);
	caca_draw_bitmap( 0, 0, caca_get_width() - 1, caca_get_height() - 1,
			  Caca_bitmap, Caca_buffer );
	caca_refresh();
	SDL_mutexV(Caca_mutex);
	return;
}

/* Note:  If we are terminated, this could be called in the middle of
   another SDL video routine -- notably UpdateRects.
*/
void Caca_VideoQuit(_THIS)
{
	int i;

	/* Free video mode lists */
	for ( i=0; i<SDL_NUMMODES; ++i ) {
		if ( SDL_modelist[i] != NULL ) {
			free(SDL_modelist[i]);
			SDL_modelist[i] = NULL;
		}
	}

	if ( Caca_bitmap ) {
		caca_free_bitmap( Caca_bitmap );
		Caca_bitmap = NULL;
	}

	caca_end();

	SDL_DestroyMutex(Caca_mutex);
}