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 */
28 #include <stdlib.h> /* malloc(), free() */
32 #include <vlc_interface.h>
36 # include <conio.h> /* for glide ? */
39 #include <linutil.h> /* Glide kbhit() and getch() */
41 #define GLIDE_WIDTH 800
42 #define GLIDE_HEIGHT 600
43 #define GLIDE_BITS_PER_PLANE 16
44 #define GLIDE_BYTES_PER_PIXEL 2
46 /*****************************************************************************
48 *****************************************************************************/
49 static int Create ( vlc_object_t * );
50 static void Destroy ( vlc_object_t * );
52 static int Init ( vout_thread_t * );
53 static void End ( vout_thread_t * );
54 static int Manage ( vout_thread_t * );
55 static void Display ( vout_thread_t *, picture_t * );
57 static int OpenDisplay ( vout_thread_t * );
58 static void CloseDisplay ( vout_thread_t * );
60 /*****************************************************************************
62 *****************************************************************************/
64 set_description( _("3dfx Glide video output") );
65 set_capability( "video output", 20 );
66 add_shortcut( "3dfx" );
67 set_callbacks( Create, Destroy );
70 /*****************************************************************************
71 * vout_sys_t: Glide video output method descriptor
72 *****************************************************************************
73 * This structure is part of the video output thread descriptor.
74 * It describes the Glide specific properties of an output thread.
75 *****************************************************************************/
78 GrLfbInfo_t p_buffer_info; /* back buffer info */
80 uint8_t * pp_buffer[2];
84 /*****************************************************************************
85 * Create: allocates Glide video thread output method
86 *****************************************************************************
87 * This function allocates and initializes a Glide vout method.
88 *****************************************************************************/
89 static int Create( vlc_object_t *p_this )
91 vout_thread_t *p_vout = (vout_thread_t *)p_this;
93 /* Allocate structure */
94 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
95 if( p_vout->p_sys == NULL )
97 msg_Err( p_vout, "out of memory" );
101 /* Open and initialize device */
102 if( OpenDisplay( p_vout ) )
104 msg_Err( p_vout, "cannot open display" );
105 free( p_vout->p_sys );
109 p_vout->pf_init = Init;
110 p_vout->pf_end = End;
111 p_vout->pf_manage = Manage;
112 p_vout->pf_render = NULL;
113 p_vout->pf_display = Display;
118 /*****************************************************************************
119 * Init: initialize Glide video thread output method
120 *****************************************************************************/
121 static int Init( vout_thread_t *p_vout )
126 /* FIXME: we don't set i_chroma !! */
127 p_vout->output.i_rmask = 0xf800;
128 p_vout->output.i_gmask = 0x07e0;
129 p_vout->output.i_bmask = 0x001f;
131 I_OUTPUTPICTURES = 0;
135 /* Find an empty picture slot */
136 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
138 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
140 p_pic = p_vout->p_picture + i_index;
150 /* We know the chroma, allocate a buffer which will be used
151 * directly by the decoder */
154 p_pic->p->p_pixels = p_vout->p_sys->pp_buffer[p_vout->p_sys->i_index];
155 p_pic->p->i_lines = GLIDE_HEIGHT;
156 p_pic->p->i_visible_lines = GLIDE_HEIGHT;
157 p_pic->p->i_pitch = p_vout->p_sys->p_buffer_info.strideInBytes;
158 /*1024 * GLIDE_BYTES_PER_PIXEL*/
159 p_pic->p->i_pixel_pitch = GLIDE_BYTES_PER_PIXEL;
160 p_pic->p->i_visible_pitch = GLIDE_WIDTH * GLIDE_BYTES_PER_PIXEL;
162 p_pic->i_status = DESTROYED_PICTURE;
163 p_pic->i_type = DIRECT_PICTURE;
165 PP_OUTPUTPICTURE[ 0 ] = p_pic;
167 I_OUTPUTPICTURES = 1;
172 /*****************************************************************************
173 * End: terminate Glide video thread output method
174 *****************************************************************************/
175 static void End( vout_thread_t *p_vout )
180 /*****************************************************************************
181 * Destroy: destroy Glide video thread output method
182 *****************************************************************************
183 * Terminate an output method created by Create
184 *****************************************************************************/
185 static void Destroy( vlc_object_t *p_this )
187 vout_thread_t *p_vout = (vout_thread_t *)p_this;
188 CloseDisplay( p_vout );
189 free( p_vout->p_sys );
192 /*****************************************************************************
193 * Manage: handle Glide events
194 *****************************************************************************
195 * This function should be called regularly by video output thread. It manages
196 * console events. It returns a non null value on error.
197 *****************************************************************************/
198 static int Manage( vout_thread_t *p_vout )
202 /* very Linux specific - see tlib.c in Glide for other versions */
210 p_vout->p_libvlc->b_die = 1;
221 /*****************************************************************************
222 * Display: displays previously rendered output
223 *****************************************************************************/
224 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
227 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
231 if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER,
232 GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
233 &p_vout->p_sys->p_buffer_info) == FXFALSE )
235 msg_Err( p_vout, "cannot take 3dfx back buffer lock" );
239 /* following functions are local */
241 /*****************************************************************************
242 * OpenDisplay: open and initialize 3dfx device
243 *****************************************************************************/
245 static int OpenDisplay( vout_thread_t *p_vout )
247 static char version[80];
248 GrHwConfiguration hwconfig;
249 GrScreenResolution_t resolution = GR_RESOLUTION_800x600;
250 GrLfbInfo_t p_front_buffer_info; /* front buffer info */
252 grGlideGetVersion( version );
255 if( !grSstQueryHardware(&hwconfig) )
257 msg_Err( p_vout, "cannot get 3dfx hardware config" );
262 if( !grSstWinOpen( 0, resolution, GR_REFRESH_60Hz,
263 GR_COLORFORMAT_ABGR, GR_ORIGIN_UPPER_LEFT, 2, 1 ) )
265 msg_Err( p_vout, "cannot open 3dfx screen" );
269 /* disable dithering */
270 /*grDitherMode( GR_DITHER_DISABLE );*/
272 /* clear both buffers */
273 grRenderBuffer( GR_BUFFER_BACKBUFFER );
274 grBufferClear( 0, 0, 0 );
275 grRenderBuffer( GR_BUFFER_FRONTBUFFER );
276 grBufferClear( 0, 0, 0 );
277 grRenderBuffer( GR_BUFFER_BACKBUFFER );
279 p_vout->p_sys->p_buffer_info.size = sizeof( GrLfbInfo_t );
280 p_front_buffer_info.size = sizeof( GrLfbInfo_t );
282 /* lock the buffers to find their adresses */
283 if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_FRONTBUFFER,
284 GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
285 &p_front_buffer_info) == FXFALSE )
287 msg_Err( p_vout, "cannot take 3dfx front buffer lock" );
291 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_FRONTBUFFER );
293 if ( grLfbLock(GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER,
294 GR_LFBWRITEMODE_565, GR_ORIGIN_UPPER_LEFT, FXFALSE,
295 &p_vout->p_sys->p_buffer_info) == FXFALSE )
297 msg_Err( p_vout, "cannot take 3dfx back buffer lock" );
301 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );
303 grBufferClear( 0, 0, 0 );
305 p_vout->p_sys->pp_buffer[0] = p_vout->p_sys->p_buffer_info.lfbPtr;
306 p_vout->p_sys->pp_buffer[1] = p_front_buffer_info.lfbPtr;
307 p_vout->p_sys->i_index = 0;
312 /*****************************************************************************
313 * CloseDisplay: close and reset 3dfx device
314 *****************************************************************************
315 * Returns all resources allocated by OpenDisplay and restore the original
316 * state of the device.
317 *****************************************************************************/
318 static void CloseDisplay( vout_thread_t *p_vout )
320 /* unlock the hidden buffer */
321 grLfbUnlock( GR_LFB_WRITE_ONLY, GR_BUFFER_BACKBUFFER );