1 /*****************************************************************************
2 * vout_dummy.c: Dummy video output display method for testing purposes
3 *****************************************************************************
4 * Copyright (C) 2000, 2001 VideoLAN
5 * $Id: vout_dummy.c,v 1.27 2002/07/31 20:56:51 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 *****************************************************************************/
27 #include <errno.h> /* ENOMEM */
28 #include <stdlib.h> /* free() */
29 #include <string.h> /* strerror() */
34 #define DUMMY_WIDTH 16
35 #define DUMMY_HEIGHT 16
36 #define DUMMY_MAX_DIRECTBUFFERS 10
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Init ( vout_thread_t * );
42 static void End ( vout_thread_t * );
43 static int Manage ( vout_thread_t * );
44 static void Render ( vout_thread_t *, picture_t * );
45 static void Display ( vout_thread_t *, picture_t * );
47 /*****************************************************************************
48 * OpenVideo: activates dummy video thread output method
49 *****************************************************************************
50 * This function initializes a dummy vout method.
51 *****************************************************************************/
52 int E_(OpenVideo) ( vlc_object_t *p_this )
54 vout_thread_t * p_vout = (vout_thread_t *)p_this;
56 p_vout->pf_init = Init;
58 p_vout->pf_manage = Manage;
59 p_vout->pf_render = Render;
60 p_vout->pf_display = Display;
65 /*****************************************************************************
66 * Init: initialize dummy video thread output method
67 *****************************************************************************/
68 static int Init( vout_thread_t *p_vout )
70 int i_index, i_chroma;
73 vlc_bool_t b_chroma = 0;
75 psz_chroma = config_GetPsz( p_vout, "dummy-chroma" );
78 if( strlen( psz_chroma ) >= 4 )
80 i_chroma = (unsigned char)psz_chroma[0] << 0;
81 i_chroma |= (unsigned char)psz_chroma[1] << 8;
82 i_chroma |= (unsigned char)psz_chroma[2] << 16;
83 i_chroma |= (unsigned char)psz_chroma[3] << 24;
93 /* Initialize the output structure */
96 msg_Dbg( p_vout, "forcing chroma 0x%.8x (%4.4s)",
97 i_chroma, (char*)&i_chroma );
98 p_vout->output.i_chroma = i_chroma;
99 p_vout->output.i_width = p_vout->render.i_width;
100 p_vout->output.i_height = p_vout->render.i_height;
101 p_vout->output.i_aspect = p_vout->render.i_aspect;
105 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
106 p_vout->output.i_rmask = 0xf800;
107 p_vout->output.i_gmask = 0x07e0;
108 p_vout->output.i_bmask = 0x001f;
109 p_vout->output.i_width = p_vout->render.i_width;
110 p_vout->output.i_height = p_vout->render.i_height;
111 p_vout->output.i_aspect = p_vout->render.i_aspect;
114 /* Try to initialize DUMMY_MAX_DIRECTBUFFERS direct buffers */
115 while( I_OUTPUTPICTURES < DUMMY_MAX_DIRECTBUFFERS )
119 /* Find an empty picture slot */
120 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
122 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
124 p_pic = p_vout->p_picture + i_index;
129 /* Allocate the picture */
135 vout_AllocatePicture( p_vout, p_pic, p_vout->output.i_width,
136 p_vout->output.i_height,
137 p_vout->output.i_chroma );
139 if( p_pic->i_planes == 0 )
144 p_pic->i_status = DESTROYED_PICTURE;
145 p_pic->i_type = DIRECT_PICTURE;
147 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
155 /*****************************************************************************
156 * End: terminate dummy video thread output method
157 *****************************************************************************/
158 static void End( vout_thread_t *p_vout )
162 /* Free the fake output buffers we allocated */
163 for( i_index = I_OUTPUTPICTURES ; i_index ; )
166 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
170 /*****************************************************************************
171 * Manage: handle dummy events
172 *****************************************************************************
173 * This function should be called regularly by video output thread. It manages
174 * console events. It returns a non null value on error.
175 *****************************************************************************/
176 static int Manage( vout_thread_t *p_vout )
181 /*****************************************************************************
182 * Render: render previously calculated output
183 *****************************************************************************/
184 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
186 /* No need to do anything, the fake direct buffers stay as they are */
189 /*****************************************************************************
190 * Display: displays previously rendered output
191 *****************************************************************************/
192 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
194 /* No need to do anything, the fake direct buffers stay as they are */