]> git.sesse.net Git - vlc/blob - modules/video_output/glide.c
Factorize video-on-top disabling while in fullscreen
[vlc] / modules / video_output / glide.c
1 /*****************************************************************************
2  * glide.c : 3dfx Glide plugin for vlc
3  *****************************************************************************
4  * Copyright (C) 2000, 2001 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.org>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27 #include <errno.h>                                                 /* ENOMEM */
28
29 #ifdef HAVE_CONFIG_H
30 # include "config.h"
31 #endif
32
33 #include <vlc/vlc.h>
34 #include <vlc_plugin.h>
35 #include <vlc_interface.h>
36 #include <vlc_vout.h>
37
38 #ifndef __linux__
39 #   include <conio.h>                                         /* for glide ? */
40 #endif
41 #include <glide.h>
42 #include <linutil.h>                            /* Glide kbhit() and getch() */
43
44 #define GLIDE_WIDTH 800
45 #define GLIDE_HEIGHT 600
46 #define GLIDE_BITS_PER_PLANE 16
47 #define GLIDE_BYTES_PER_PIXEL 2
48
49 /*****************************************************************************
50  * Local prototypes
51  *****************************************************************************/
52 static int  Create    ( vlc_object_t * );
53 static void Destroy   ( vlc_object_t * );
54
55 static int  Init      ( vout_thread_t * );
56 static void End       ( vout_thread_t * );
57 static int  Manage    ( vout_thread_t * );
58 static void Display   ( vout_thread_t *, picture_t * );
59
60 static int  OpenDisplay    ( vout_thread_t * );
61 static void CloseDisplay   ( vout_thread_t * );
62
63 /*****************************************************************************
64  * Module descriptor
65  *****************************************************************************/
66 vlc_module_begin();
67     set_description( _("3dfx Glide video output") );
68     set_capability( "video output", 20 );
69     add_shortcut( "3dfx" );
70     set_callbacks( Create, Destroy );
71 vlc_module_end();
72
73 /*****************************************************************************
74  * vout_sys_t: Glide video output method descriptor
75  *****************************************************************************
76  * This structure is part of the video output thread descriptor.
77  * It describes the Glide specific properties of an output thread.
78  *****************************************************************************/
79 struct vout_sys_t
80 {
81     GrLfbInfo_t                 p_buffer_info;           /* back buffer info */
82
83     uint8_t * pp_buffer[2];
84     int i_index;
85 };
86
87 /*****************************************************************************
88  * Create: allocates Glide video thread output method
89  *****************************************************************************
90  * This function allocates and initializes a Glide vout method.
91  *****************************************************************************/
92 static int Create( vlc_object_t *p_this )
93 {
94     vout_thread_t *p_vout = (vout_thread_t *)p_this;
95
96     /* Allocate structure */
97     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
98     if( p_vout->p_sys == NULL )
99     {
100         msg_Err( p_vout, "out of memory" );
101         return( 1 );
102     }
103
104     /* Open and initialize device */
105     if( OpenDisplay( p_vout ) )
106     {
107         msg_Err( p_vout, "cannot open display" );
108         free( p_vout->p_sys );
109         return( 1 );
110     }
111
112     p_vout->pf_init = Init;
113     p_vout->pf_end = End;
114     p_vout->pf_manage = Manage;
115     p_vout->pf_render = NULL;
116     p_vout->pf_display = Display;
117
118     return( 0 );
119 }
120
121 /*****************************************************************************
122  * Init: initialize Glide video thread output method
123  *****************************************************************************/
124 static int Init( vout_thread_t *p_vout )
125 {
126     int i_index;
127     picture_t *p_pic;
128
129     /* FIXME: we don't set i_chroma !! */
130     p_vout->output.i_rmask = 0xf800;
131     p_vout->output.i_gmask = 0x07e0;
132     p_vout->output.i_bmask = 0x001f;
133
134     I_OUTPUTPICTURES = 0;
135
136     p_pic = NULL;
137
138     /* Find an empty picture slot */
139     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
140     {
141         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
142         {
143             p_pic = p_vout->p_picture + i_index;
144             break;
145         }
146     }
147
148     if( p_pic == NULL )
149     {
150         return -1;
151     }
152
153     /* We know the chroma, allocate a buffer which will be used
154      * directly by the decoder */
155     p_pic->i_planes = 1;
156
157     p_pic->p->p_pixels = p_vout->p_sys->pp_buffer[p_vout->p_sys->i_index];
158     p_pic->p->i_lines = GLIDE_HEIGHT;
159     p_pic->p->i_visible_lines = GLIDE_HEIGHT;
160     p_pic->p->i_pitch = p_vout->p_sys->p_buffer_info.strideInBytes;
161                          /*1024 * GLIDE_BYTES_PER_PIXEL*/
162     p_pic->p->i_pixel_pitch = GLIDE_BYTES_PER_PIXEL;
163     p_pic->p->i_visible_pitch = GLIDE_WIDTH * GLIDE_BYTES_PER_PIXEL;
164
165     p_pic->i_status = DESTROYED_PICTURE;
166     p_pic->i_type   = DIRECT_PICTURE;
167
168     PP_OUTPUTPICTURE[ 0 ] = p_pic;
169
170     I_OUTPUTPICTURES = 1;
171
172     return 0;
173 }
174
175 /*****************************************************************************
176  * End: terminate Glide video thread output method
177  *****************************************************************************/
178 static void End( vout_thread_t *p_vout )
179 {
180     ;
181 }
182
183 /*****************************************************************************
184  * Destroy: destroy Glide video thread output method
185  *****************************************************************************
186  * Terminate an output method created by Create
187  *****************************************************************************/
188 static void Destroy( vlc_object_t *p_this )
189 {
190     vout_thread_t *p_vout = (vout_thread_t *)p_this;
191     CloseDisplay( p_vout );
192     free( p_vout->p_sys );
193 }
194
195 /*****************************************************************************
196  * Manage: handle Glide events
197  *****************************************************************************
198  * This function should be called regularly by video output thread. It manages
199  * console events. It returns a non null value on error.
200  *****************************************************************************/
201 static int Manage( vout_thread_t *p_vout )
202 {
203     int buf;
204
205     /* very Linux specific - see tlib.c in Glide for other versions */
206     while( kbhit() )
207     {
208         buf = getch();
209
210         switch( (char)buf )
211         {
212         case 'q':
213             vlc_object_kill( p_vout->p_libvlc );
214             break;
215
216         default:
217             break;
218         }
219     }
220
221     return 0;
222 }
223
224 /*****************************************************************************
225  * Display: displays previously rendered output
226  *****************************************************************************/
227 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
228
229 {
230     grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
231
232     grBufferSwap( 0 );
233
234     if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER,
235                    GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
236                    &p_vout->p_sys->p_buffer_info) == FXFALSE )
237     {
238         msg_Err( p_vout, "cannot take 3dfx back buffer lock" );
239     }
240 }
241
242 /* following functions are local */
243
244 /*****************************************************************************
245  * OpenDisplay: open and initialize 3dfx device
246  *****************************************************************************/
247
248 static int OpenDisplay( vout_thread_t *p_vout )
249 {
250     static char version[80];
251     GrHwConfiguration hwconfig;
252     GrScreenResolution_t resolution = GR_RESOLUTION_800x600;
253     GrLfbInfo_t p_front_buffer_info;                    /* front buffer info */
254
255     grGlideGetVersion( version );
256     grGlideInit();
257
258     if( !grSstQueryHardware(&hwconfig) )
259     {
260         msg_Err( p_vout, "cannot get 3dfx hardware config" );
261         return( 1 );
262     }
263
264     grSstSelect( 0 );
265     if( !grSstWinOpen( 0, resolution, GR_REFRESH_60Hz,
266                        GR_COLORFORMAT_ABGR, GR_ORIGIN_UPPER_LEFT, 2, 1 ) )
267     {
268         msg_Err( p_vout, "cannot open 3dfx screen" );
269         return( 1 );
270     }
271
272     /* disable dithering */
273     /*grDitherMode( GR_DITHER_DISABLE );*/
274
275     /* clear both buffers */
276     grRenderBuffer( GR_BUFFER_BACKBUFFER );
277     grBufferClear( 0, 0, 0 );
278     grRenderBuffer( GR_BUFFER_FRONTBUFFER );
279     grBufferClear( 0, 0, 0 );
280     grRenderBuffer( GR_BUFFER_BACKBUFFER );
281
282     p_vout->p_sys->p_buffer_info.size = sizeof( GrLfbInfo_t );
283     p_front_buffer_info.size          = sizeof( GrLfbInfo_t );
284
285     /* lock the buffers to find their adresses */
286     if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_FRONTBUFFER,
287                    GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
288                    &p_front_buffer_info) == FXFALSE )
289     {
290         msg_Err( p_vout, "cannot take 3dfx front buffer lock" );
291         grGlideShutdown();
292         return( 1 );
293     }
294     grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_FRONTBUFFER );
295
296     if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER,
297                    GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
298                    &p_vout->p_sys->p_buffer_info) == FXFALSE )
299     {
300         msg_Err( p_vout, "cannot take 3dfx back buffer lock" );
301         grGlideShutdown();
302         return( 1 );
303     }
304     grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
305
306     grBufferClear( 0, 0, 0 );
307
308     p_vout->p_sys->pp_buffer[0] = p_vout->p_sys->p_buffer_info.lfbPtr;
309     p_vout->p_sys->pp_buffer[1] = p_front_buffer_info.lfbPtr;
310     p_vout->p_sys->i_index = 0;
311
312     return( 0 );
313 }
314
315 /*****************************************************************************
316  * CloseDisplay: close and reset 3dfx device
317  *****************************************************************************
318  * Returns all resources allocated by OpenDisplay and restore the original
319  * state of the device.
320  *****************************************************************************/
321 static void CloseDisplay( vout_thread_t *p_vout )
322 {
323     /* unlock the hidden buffer */
324     grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
325
326     /* shutdown Glide */
327     grGlideShutdown();
328 }
329