1 /*****************************************************************************
2 * glide.c : 3dfx Glide plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 the VideoLAN team
7 * Authors: Samuel Hocevar <sam@zoy.org>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <errno.h> /* ENOMEM */
34 #include <vlc_interface.h>
38 # include <conio.h> /* for glide ? */
41 #include <linutil.h> /* Glide kbhit() and getch() */
43 #define GLIDE_WIDTH 800
44 #define GLIDE_HEIGHT 600
45 #define GLIDE_BITS_PER_PLANE 16
46 #define GLIDE_BYTES_PER_PIXEL 2
48 /*****************************************************************************
50 *****************************************************************************/
51 static int Create ( vlc_object_t * );
52 static void Destroy ( vlc_object_t * );
54 static int Init ( vout_thread_t * );
55 static void End ( vout_thread_t * );
56 static int Manage ( vout_thread_t * );
57 static void Display ( vout_thread_t *, picture_t * );
59 static int OpenDisplay ( vout_thread_t * );
60 static void CloseDisplay ( vout_thread_t * );
62 /*****************************************************************************
64 *****************************************************************************/
66 set_description( _("3dfx Glide video output") );
67 set_capability( "video output", 20 );
68 add_shortcut( "3dfx" );
69 set_callbacks( Create, Destroy );
72 /*****************************************************************************
73 * vout_sys_t: Glide video output method descriptor
74 *****************************************************************************
75 * This structure is part of the video output thread descriptor.
76 * It describes the Glide specific properties of an output thread.
77 *****************************************************************************/
80 GrLfbInfo_t p_buffer_info; /* back buffer info */
82 uint8_t * pp_buffer[2];
86 /*****************************************************************************
87 * Create: allocates Glide video thread output method
88 *****************************************************************************
89 * This function allocates and initializes a Glide vout method.
90 *****************************************************************************/
91 static int Create( vlc_object_t *p_this )
93 vout_thread_t *p_vout = (vout_thread_t *)p_this;
95 /* Allocate structure */
96 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
97 if( p_vout->p_sys == NULL )
99 msg_Err( p_vout, "out of memory" );
103 /* Open and initialize device */
104 if( OpenDisplay( p_vout ) )
106 msg_Err( p_vout, "cannot open display" );
107 free( p_vout->p_sys );
111 p_vout->pf_init = Init;
112 p_vout->pf_end = End;
113 p_vout->pf_manage = Manage;
114 p_vout->pf_render = NULL;
115 p_vout->pf_display = Display;
120 /*****************************************************************************
121 * Init: initialize Glide video thread output method
122 *****************************************************************************/
123 static int Init( vout_thread_t *p_vout )
128 /* FIXME: we don't set i_chroma !! */
129 p_vout->output.i_rmask = 0xf800;
130 p_vout->output.i_gmask = 0x07e0;
131 p_vout->output.i_bmask = 0x001f;
133 I_OUTPUTPICTURES = 0;
137 /* Find an empty picture slot */
138 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
140 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
142 p_pic = p_vout->p_picture + i_index;
152 /* We know the chroma, allocate a buffer which will be used
153 * directly by the decoder */
156 p_pic->p->p_pixels = p_vout->p_sys->pp_buffer[p_vout->p_sys->i_index];
157 p_pic->p->i_lines = GLIDE_HEIGHT;
158 p_pic->p->i_visible_lines = GLIDE_HEIGHT;
159 p_pic->p->i_pitch = p_vout->p_sys->p_buffer_info.strideInBytes;
160 /*1024 * GLIDE_BYTES_PER_PIXEL*/
161 p_pic->p->i_pixel_pitch = GLIDE_BYTES_PER_PIXEL;
162 p_pic->p->i_visible_pitch = GLIDE_WIDTH * GLIDE_BYTES_PER_PIXEL;
164 p_pic->i_status = DESTROYED_PICTURE;
165 p_pic->i_type = DIRECT_PICTURE;
167 PP_OUTPUTPICTURE[ 0 ] = p_pic;
169 I_OUTPUTPICTURES = 1;
174 /*****************************************************************************
175 * End: terminate Glide video thread output method
176 *****************************************************************************/
177 static void End( vout_thread_t *p_vout )
182 /*****************************************************************************
183 * Destroy: destroy Glide video thread output method
184 *****************************************************************************
185 * Terminate an output method created by Create
186 *****************************************************************************/
187 static void Destroy( vlc_object_t *p_this )
189 vout_thread_t *p_vout = (vout_thread_t *)p_this;
190 CloseDisplay( p_vout );
191 free( p_vout->p_sys );
194 /*****************************************************************************
195 * Manage: handle Glide events
196 *****************************************************************************
197 * This function should be called regularly by video output thread. It manages
198 * console events. It returns a non null value on error.
199 *****************************************************************************/
200 static int Manage( vout_thread_t *p_vout )
204 /* very Linux specific - see tlib.c in Glide for other versions */
212 vlc_object_kill( p_vout->p_libvlc );
223 /*****************************************************************************
224 * Display: displays previously rendered output
225 *****************************************************************************/
226 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
229 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
233 if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER,
234 GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
235 &p_vout->p_sys->p_buffer_info) == FXFALSE )
237 msg_Err( p_vout, "cannot take 3dfx back buffer lock" );
241 /* following functions are local */
243 /*****************************************************************************
244 * OpenDisplay: open and initialize 3dfx device
245 *****************************************************************************/
247 static int OpenDisplay( vout_thread_t *p_vout )
249 static char version[80];
250 GrHwConfiguration hwconfig;
251 GrScreenResolution_t resolution = GR_RESOLUTION_800x600;
252 GrLfbInfo_t p_front_buffer_info; /* front buffer info */
254 grGlideGetVersion( version );
257 if( !grSstQueryHardware(&hwconfig) )
259 msg_Err( p_vout, "cannot get 3dfx hardware config" );
264 if( !grSstWinOpen( 0, resolution, GR_REFRESH_60Hz,
265 GR_COLORFORMAT_ABGR, GR_ORIGIN_UPPER_LEFT, 2, 1 ) )
267 msg_Err( p_vout, "cannot open 3dfx screen" );
271 /* disable dithering */
272 /*grDitherMode( GR_DITHER_DISABLE );*/
274 /* clear both buffers */
275 grRenderBuffer( GR_BUFFER_BACKBUFFER );
276 grBufferClear( 0, 0, 0 );
277 grRenderBuffer( GR_BUFFER_FRONTBUFFER );
278 grBufferClear( 0, 0, 0 );
279 grRenderBuffer( GR_BUFFER_BACKBUFFER );
281 p_vout->p_sys->p_buffer_info.size = sizeof( GrLfbInfo_t );
282 p_front_buffer_info.size = sizeof( GrLfbInfo_t );
284 /* lock the buffers to find their adresses */
285 if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_FRONTBUFFER,
286 GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
287 &p_front_buffer_info) == FXFALSE )
289 msg_Err( p_vout, "cannot take 3dfx front buffer lock" );
293 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_FRONTBUFFER );
295 if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER,
296 GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
297 &p_vout->p_sys->p_buffer_info) == FXFALSE )
299 msg_Err( p_vout, "cannot take 3dfx back buffer lock" );
303 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
305 grBufferClear( 0, 0, 0 );
307 p_vout->p_sys->pp_buffer[0] = p_vout->p_sys->p_buffer_info.lfbPtr;
308 p_vout->p_sys->pp_buffer[1] = p_front_buffer_info.lfbPtr;
309 p_vout->p_sys->i_index = 0;
314 /*****************************************************************************
315 * CloseDisplay: close and reset 3dfx device
316 *****************************************************************************
317 * Returns all resources allocated by OpenDisplay and restore the original
318 * state of the device.
319 *****************************************************************************/
320 static void CloseDisplay( vout_thread_t *p_vout )
322 /* unlock the hidden buffer */
323 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );