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 1.23 2002/05/20 19:02:22 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() */
31 #include <videolan/vlc.h>
34 #include "video_output.h"
36 #define DUMMY_WIDTH 16
37 #define DUMMY_HEIGHT 16
38 #define DUMMY_MAX_DIRECTBUFFERS 10
40 /*****************************************************************************
41 * vout_sys_t: dummy video output method descriptor
42 *****************************************************************************
43 * This structure is part of the video output thread descriptor.
44 * It describes the dummy specific properties of an output thread.
45 *****************************************************************************/
46 typedef struct vout_sys_s
48 /* Nothing needed here. Maybe stats ? */
50 /* Prevent malloc(0) */
55 /*****************************************************************************
57 *****************************************************************************/
58 static int vout_Create ( struct vout_thread_s * );
59 static int vout_Init ( struct vout_thread_s * );
60 static void vout_End ( struct vout_thread_s * );
61 static void vout_Destroy ( struct vout_thread_s * );
62 static int vout_Manage ( struct vout_thread_s * );
63 static void vout_Render ( struct vout_thread_s *, struct picture_s * );
64 static void vout_Display ( struct vout_thread_s *, struct picture_s * );
66 /*****************************************************************************
67 * Functions exported as capabilities. They are declared as static so that
68 * we don't pollute the namespace too much.
69 *****************************************************************************/
70 void _M( vout_getfunctions )( function_list_t * p_function_list )
72 p_function_list->functions.vout.pf_create = vout_Create;
73 p_function_list->functions.vout.pf_init = vout_Init;
74 p_function_list->functions.vout.pf_end = vout_End;
75 p_function_list->functions.vout.pf_destroy = vout_Destroy;
76 p_function_list->functions.vout.pf_manage = vout_Manage;
77 p_function_list->functions.vout.pf_render = vout_Render;
78 p_function_list->functions.vout.pf_display = vout_Display;
81 /*****************************************************************************
82 * vout_Create: allocates dummy video thread output method
83 *****************************************************************************
84 * This function allocates and initializes a dummy vout method.
85 *****************************************************************************/
86 static int vout_Create( vout_thread_t *p_vout )
88 /* Allocate structure */
89 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
90 if( p_vout->p_sys == NULL )
92 intf_ErrMsg("error: %s", strerror(ENOMEM) );
99 /*****************************************************************************
100 * vout_Init: initialize dummy video thread output method
101 *****************************************************************************/
102 static int vout_Init( vout_thread_t *p_vout )
104 int i_index, i_chroma;
107 boolean_t b_chroma = 0;
109 psz_chroma = config_GetPszVariable( "dummy-chroma" );
112 if( strlen( psz_chroma ) >= 4 )
114 i_chroma = (unsigned char)psz_chroma[0] << 0;
115 i_chroma |= (unsigned char)psz_chroma[1] << 8;
116 i_chroma |= (unsigned char)psz_chroma[2] << 16;
117 i_chroma |= (unsigned char)psz_chroma[3] << 24;
125 I_OUTPUTPICTURES = 0;
127 /* Initialize the output structure */
130 intf_WarnMsg( 3, "vout info: forcing chroma 0x%.8x (%4.4s)",
131 i_chroma, (char*)&i_chroma );
132 p_vout->output.i_chroma = i_chroma;
133 p_vout->output.i_width = p_vout->render.i_width;
134 p_vout->output.i_height = p_vout->render.i_height;
135 p_vout->output.i_aspect = p_vout->render.i_aspect;
139 p_vout->output.i_chroma = FOURCC_RV16;
140 p_vout->output.i_rmask = 0xf800;
141 p_vout->output.i_gmask = 0x07e0;
142 p_vout->output.i_bmask = 0x001f;
143 p_vout->output.i_width = p_vout->render.i_width;
144 p_vout->output.i_height = p_vout->render.i_height;
145 p_vout->output.i_aspect = p_vout->render.i_aspect;
148 /* Try to initialize DUMMY_MAX_DIRECTBUFFERS direct buffers */
149 while( I_OUTPUTPICTURES < DUMMY_MAX_DIRECTBUFFERS )
153 /* Find an empty picture slot */
154 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
156 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
158 p_pic = p_vout->p_picture + i_index;
163 /* Allocate the picture */
169 vout_AllocatePicture( p_pic, p_vout->output.i_width,
170 p_vout->output.i_height,
171 p_vout->output.i_chroma );
173 if( p_pic->i_planes == 0 )
178 p_pic->i_status = DESTROYED_PICTURE;
179 p_pic->i_type = DIRECT_PICTURE;
181 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
189 /*****************************************************************************
190 * vout_End: terminate dummy video thread output method
191 *****************************************************************************/
192 static void vout_End( vout_thread_t *p_vout )
196 /* Free the fake output buffers we allocated */
197 for( i_index = I_OUTPUTPICTURES ; i_index ; )
200 free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
204 /*****************************************************************************
205 * vout_Destroy: destroy dummy video thread output method
206 *****************************************************************************
207 * Terminate an output method created by DummyCreateOutputMethod
208 *****************************************************************************/
209 static void vout_Destroy( vout_thread_t *p_vout )
211 free( p_vout->p_sys );
214 /*****************************************************************************
215 * vout_Manage: handle dummy events
216 *****************************************************************************
217 * This function should be called regularly by video output thread. It manages
218 * console events. It returns a non null value on error.
219 *****************************************************************************/
220 static int vout_Manage( vout_thread_t *p_vout )
225 /*****************************************************************************
226 * vout_Render: render previously calculated output
227 *****************************************************************************/
228 static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
230 /* No need to do anything, the fake direct buffers stay as they are */
233 /*****************************************************************************
234 * vout_Display: displays previously rendered output
235 *****************************************************************************/
236 static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
238 /* No need to do anything, the fake direct buffers stay as they are */