1 /*****************************************************************************
2 * svgalib.c : SVGAlib plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
5 * $Id: svgalib.c,v 1.2 2002/08/21 17:31:58 sam Exp $
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
34 #include <vgakeyboard.h>
36 /*****************************************************************************
38 *****************************************************************************/
39 static int Create ( vlc_object_t * );
40 static void Destroy ( vlc_object_t * );
42 static int Init ( vout_thread_t * );
43 static void End ( vout_thread_t * );
44 static int Manage ( vout_thread_t * );
45 static void Display ( vout_thread_t *, picture_t * );
47 static void SetPalette( vout_thread_t *, u16 *, u16 *, u16 * );
49 /*****************************************************************************
51 *****************************************************************************/
53 set_description( _("SVGAlib module") );
54 set_capability( "video output", 0 );
55 set_callbacks( Create, Destroy );
56 linked_with_a_crap_library_which_uses_atexit();
59 /*****************************************************************************
60 * vout_sys_t: video output descriptor
61 *****************************************************************************
62 * This structure is part of the video output thread descriptor.
63 * It describes the SVGAlib specific properties of an output thread.
64 *****************************************************************************/
70 /*****************************************************************************
71 * Create: allocates video thread
72 *****************************************************************************
73 * This function allocates and initializes a vout method.
74 *****************************************************************************/
75 static int Create( vlc_object_t *p_this )
77 vout_thread_t *p_vout = (vout_thread_t *)p_this;
79 /* Allocate instance and initialize some members */
80 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
81 if( p_vout->p_sys == NULL )
86 /* FIXME: find a way to test for SVGAlib availability. We cannot call
87 * vga_init from here because it needs to be closed from the same thread
88 * and we might give away the video output to another thread. Bah, it
89 * doesn't matter anyway ... SVGAlib is being an UGLY DIRTY PIG and calls
90 * atexit() and exit() so what can we do? */
92 p_vout->pf_init = Init;
94 p_vout->pf_manage = Manage;
95 p_vout->pf_render = NULL;
96 p_vout->pf_display = Display;
101 /*****************************************************************************
102 * Init: initialize video thread
103 *****************************************************************************/
104 static int Init( vout_thread_t *p_vout )
109 I_OUTPUTPICTURES = 0;
111 /* SVGAlib shut up! */
112 vga_disabledriverreport();
114 /* We cannot call vga_init() in Create() because it has to be run
115 * from the same thread as the other vga calls. */
118 /* Check that we have a 8bpp mode available */
119 p_vout->p_sys->i_vgamode = vga_getdefaultmode();
120 if( p_vout->p_sys->i_vgamode == -1
121 || vga_getmodeinfo(p_vout->p_sys->i_vgamode)->bytesperpixel != 1 )
123 p_vout->p_sys->i_vgamode = G320x200x256;
126 if( !vga_hasmode( p_vout->p_sys->i_vgamode ) )
128 msg_Err( p_vout, "mode %i not available", p_vout->p_sys->i_vgamode );
132 vga_setmode( p_vout->p_sys->i_vgamode );
133 gl_setcontextvga( p_vout->p_sys->i_vgamode );
136 if( keyboard_init() )
138 msg_Err( p_vout, "could not initialize keyboard" );
144 keyboard_translatekeys( TRANSLATE_CURSORKEYS |
145 TRANSLATE_KEYPADENTER |
146 TRANSLATE_DIAGONAL );
148 /* Initialize the output structure: RGB with square pixels, whatever
149 * the input format is, since it's the only format we know */
150 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
151 p_vout->output.pf_setpalette = SetPalette;
152 p_vout->output.i_width = vga_getxdim();
153 p_vout->output.i_height = vga_getydim();
154 p_vout->output.i_aspect = p_vout->output.i_width
155 * VOUT_ASPECT_FACTOR / p_vout->output.i_height;
157 /* Try to initialize 1 direct buffer */
160 /* Find an empty picture slot */
161 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
163 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
165 p_pic = p_vout->p_picture + i_index;
170 /* Allocate the picture */
176 vout_AllocatePicture( p_vout, p_pic, p_vout->output.i_width,
177 p_vout->output.i_height,
178 p_vout->output.i_chroma );
180 if( p_pic->i_planes == 0 )
185 p_pic->i_status = DESTROYED_PICTURE;
186 p_pic->i_type = DIRECT_PICTURE;
188 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
195 /*****************************************************************************
196 * End: terminate video thread
197 *****************************************************************************/
198 static void End( vout_thread_t *p_vout )
205 /*****************************************************************************
206 * Destroy: destroy video thread
207 *****************************************************************************
208 * Terminate an output method created by Create
209 *****************************************************************************/
210 static void Destroy( vlc_object_t *p_this )
212 vout_thread_t *p_vout = (vout_thread_t *)p_this;
214 /* Destroy structure */
215 free( p_vout->p_sys );
218 /*****************************************************************************
219 * Manage: handle SVGAlib events
220 *****************************************************************************
221 * This function should be called regularly by video output thread. It manages
222 * console events. It returns a non null value on error.
223 *****************************************************************************/
224 static int Manage( vout_thread_t *p_vout )
228 if( keyboard_keypressed(SCANCODE_ESCAPE)
229 || keyboard_keypressed(SCANCODE_Q ) )
231 p_vout->p_vlc->b_die = VLC_TRUE;
237 /*****************************************************************************
238 * Display: displays previously rendered output
239 *****************************************************************************
240 * This function sends the currently rendered image to the VGA card.
241 *****************************************************************************/
242 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
244 gl_putbox( 0, 0, p_vout->output.i_width,
245 p_vout->output.i_height, p_pic->p->p_pixels );
248 /*****************************************************************************
249 * SetPalette: set a 8bpp palette
250 *****************************************************************************
251 * TODO: support 8 bits clut (for Mach32 cards and others).
252 *****************************************************************************/
253 static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
259 vga_setpalette( i, red[i]>>10, green[i]>>10, blue[i]>>10 );