1 /*****************************************************************************
2 * vout_dummy.c: Dummy video output display method for testing purposes
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 *****************************************************************************/
32 #include <vlc_common.h>
35 #define DUMMY_WIDTH 16
36 #define DUMMY_HEIGHT 16
37 #define DUMMY_MAX_DIRECTBUFFERS 10
41 /*****************************************************************************
43 *****************************************************************************/
44 static int Init ( vout_thread_t * );
45 static void End ( vout_thread_t * );
46 static int Manage ( vout_thread_t * );
47 static void Render ( vout_thread_t *, picture_t * );
48 static void Display ( vout_thread_t *, picture_t * );
49 static void SetPalette ( vout_thread_t *, uint16_t *, uint16_t *, uint16_t * );
50 static int Control ( vout_thread_t *, int, va_list );
52 /*****************************************************************************
53 * OpenVideo: activates dummy video thread output method
54 *****************************************************************************
55 * This function initializes a dummy vout method.
56 *****************************************************************************/
57 int OpenVideo ( vlc_object_t *p_this )
59 vout_thread_t * p_vout = (vout_thread_t *)p_this;
61 p_vout->pf_init = Init;
63 p_vout->pf_manage = Manage;
64 p_vout->pf_render = Render;
65 p_vout->pf_display = Display;
66 p_vout->pf_control = Control;
71 /*****************************************************************************
72 * Control: control facility for the vout
73 *****************************************************************************/
74 static int Control( vout_thread_t *p_vout, int i_query, va_list args )
76 (void) p_vout; (void) i_query; (void) args;
81 /*****************************************************************************
82 * Init: initialize dummy video thread output method
83 *****************************************************************************/
84 static int Init( vout_thread_t *p_vout )
86 int i_index, i_chroma;
91 psz_chroma = config_GetPsz( p_vout, "dummy-chroma" );
94 if( strlen( psz_chroma ) >= 4 )
96 i_chroma = VLC_FOURCC( psz_chroma[0], psz_chroma[1],
97 psz_chroma[2], psz_chroma[3] );
104 I_OUTPUTPICTURES = 0;
106 /* Initialize the output structure */
109 msg_Dbg( p_vout, "forcing chroma 0x%.8x (%4.4s)",
110 i_chroma, (char*)&i_chroma );
111 p_vout->output.i_chroma = i_chroma;
112 if ( i_chroma == VLC_FOURCC( 'R', 'G', 'B', '2' ) )
114 p_vout->output.pf_setpalette = SetPalette;
116 p_vout->output.i_width = p_vout->render.i_width;
117 p_vout->output.i_height = p_vout->render.i_height;
118 p_vout->output.i_aspect = p_vout->render.i_aspect;
122 /* Use same chroma as input */
123 p_vout->output.i_chroma = p_vout->render.i_chroma;
124 p_vout->output.i_rmask = p_vout->render.i_rmask;
125 p_vout->output.i_gmask = p_vout->render.i_gmask;
126 p_vout->output.i_bmask = p_vout->render.i_bmask;
127 p_vout->output.i_width = p_vout->render.i_width;
128 p_vout->output.i_height = p_vout->render.i_height;
129 p_vout->output.i_aspect = p_vout->render.i_aspect;
132 /* Try to initialize DUMMY_MAX_DIRECTBUFFERS direct buffers */
133 while( I_OUTPUTPICTURES < DUMMY_MAX_DIRECTBUFFERS )
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;
147 /* Allocate the picture */
153 vout_AllocatePicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
154 p_vout->output.i_width, p_vout->output.i_height,
155 p_vout->output.i_aspect );
157 if( p_pic->i_planes == 0 )
162 p_pic->i_status = DESTROYED_PICTURE;
163 p_pic->i_type = DIRECT_PICTURE;
165 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
173 /*****************************************************************************
174 * End: terminate dummy video thread output method
175 *****************************************************************************/
176 static void End( vout_thread_t *p_vout )
180 /* Free the fake output buffers we allocated */
181 for( i_index = I_OUTPUTPICTURES ; i_index ; )
184 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
188 /*****************************************************************************
189 * Manage: handle dummy events
190 *****************************************************************************
191 * This function should be called regularly by video output thread. It manages
192 * console events. It returns a non null value on error.
193 *****************************************************************************/
194 static int Manage( vout_thread_t *p_vout )
200 /*****************************************************************************
201 * Render: render previously calculated output
202 *****************************************************************************/
203 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
205 VLC_UNUSED(p_vout); VLC_UNUSED(p_pic);
206 /* No need to do anything, the fake direct buffers stay as they are */
209 /*****************************************************************************
210 * Display: displays previously rendered output
211 *****************************************************************************/
212 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
214 VLC_UNUSED(p_vout); VLC_UNUSED(p_pic);
215 /* No need to do anything, the fake direct buffers stay as they are */
218 /*****************************************************************************
219 * SetPalette: set the palette for the picture
220 *****************************************************************************/
221 static void SetPalette ( vout_thread_t *p_vout,
222 uint16_t *red, uint16_t *green, uint16_t *blue )
224 VLC_UNUSED(p_vout); VLC_UNUSED(red); VLC_UNUSED(green); VLC_UNUSED(blue);
225 /* No need to do anything, the fake direct buffers stay as they are */