1 /*****************************************************************************
2 * fake.c : Fake video input for VLC
3 *****************************************************************************
4 * Copyright (C) 2005 the VideoLAN team
7 * Author: Christophe Massiot <massiot@via.ecp.fr>
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_access.h>
33 #include <vlc_demux.h>
35 /*****************************************************************************
37 *****************************************************************************/
38 static int Open ( vlc_object_t * );
39 static void Close( vlc_object_t * );
41 #define CACHING_TEXT N_("Caching value in ms")
42 #define CACHING_LONGTEXT N_( \
43 "Caching value for fake streams. This " \
44 "value should be set in milliseconds." )
45 #define FPS_TEXT N_("Framerate")
46 #define FPS_LONGTEXT N_( \
47 "Number of frames per second (eg. 24, 25, 29.97, 30).")
48 #define ID_TEXT N_("ID")
49 #define ID_LONGTEXT N_( \
50 "Set the ID of the fake elementary stream for use in " \
51 "#duplicate{} constructs (default 0).")
52 #define DURATION_TEXT N_("Duration in ms")
53 #define DURATION_LONGTEXT N_( \
54 "Duration of the fake streaming before faking an " \
55 "end-of-file (default is 0, meaning that the stream is unlimited).")
58 set_shortname( _("Fake") );
59 set_description( _("Fake input") );
60 set_category( CAT_INPUT );
61 set_subcategory( SUBCAT_INPUT_ACCESS );
63 add_integer( "fake-caching", DEFAULT_PTS_DELAY / 1000, NULL,
64 CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
65 add_float( "fake-fps", 25.0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
66 add_integer( "fake-id", 0, NULL, ID_TEXT, ID_LONGTEXT, VLC_TRUE );
67 add_integer( "fake-duration", 0, NULL, DURATION_TEXT, DURATION_LONGTEXT,
70 add_shortcut( "fake" );
71 set_capability( "access_demux", 0 );
72 set_callbacks( Open, Close );
75 /*****************************************************************************
76 * Access: local prototypes
77 *****************************************************************************/
78 static int Demux ( demux_t * );
79 static int Control( demux_t *, int, va_list );
84 mtime_t i_last_pts, i_duration, i_first_pts, i_end_pts, i_pause_pts;
86 es_out_id_t *p_es_video;
89 /*****************************************************************************
90 * Open: opens fake device
91 *****************************************************************************/
92 static int Open( vlc_object_t *p_this )
94 demux_t *p_demux = (demux_t*)p_this;
98 /* Only when selected */
99 if( *p_demux->psz_access == '\0' )
103 STANDARD_DEMUX_INIT; p_sys = p_demux->p_sys;
104 p_demux->info.i_update = 0;
105 p_demux->info.i_title = 0;
106 p_demux->info.i_seekpoint = 0;
108 p_sys->i_duration = var_CreateGetInteger( p_demux, "fake-duration" ) * 1000;
109 p_sys->f_fps = var_CreateGetFloat( p_demux, "fake-fps" );
111 /* Declare the elementary stream */
112 es_format_Init( &fmt, VIDEO_ES, VLC_FOURCC('f','a','k','e') );
113 fmt.i_id = var_CreateGetInteger( p_demux, "fake-id" );
114 p_sys->p_es_video = es_out_Add( p_demux->out, &fmt );
116 /* Update default_pts to a suitable value for access */
117 var_Create( p_demux, "fake-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
122 /*****************************************************************************
123 * Close: close device, free resources
124 *****************************************************************************/
125 static void Close( vlc_object_t *p_this )
127 demux_t *p_demux = (demux_t *)p_this;
128 demux_sys_t *p_sys = p_demux->p_sys;
133 /*****************************************************************************
135 *****************************************************************************/
136 static int Control( demux_t *p_demux, int i_query, va_list args )
138 demux_sys_t *p_sys = p_demux->p_sys;
145 /* Special for access_demux */
146 case DEMUX_CAN_PAUSE:
147 case DEMUX_CAN_CONTROL_PACE:
148 pb = (vlc_bool_t *)va_arg( args, vlc_bool_t * );
152 case DEMUX_SET_PAUSE_STATE:
153 b = (vlc_bool_t)va_arg( args, vlc_bool_t );
156 p_sys->i_pause_pts = mdate();
158 else if ( p_sys->i_pause_pts )
160 mtime_t i_pause_duration = mdate() - p_sys->i_pause_pts;
161 p_sys->i_first_pts += i_pause_duration;
162 p_sys->i_last_pts += i_pause_duration;
163 if ( p_sys->i_duration )
164 p_sys->i_end_pts += i_pause_duration;
165 p_sys->i_pause_pts = 0;
169 case DEMUX_GET_PTS_DELAY:
170 pi64 = (int64_t *)va_arg( args, int64_t * );
171 *pi64 = (int64_t)var_GetInteger( p_demux, "fake-caching" ) * 1000;
174 case DEMUX_GET_POSITION:
175 pf = (double*)va_arg( args, double* );
176 if( p_sys->i_duration > 0 )
178 *pf = (double)( p_sys->i_last_pts - p_sys->i_first_pts )
179 / (double)(p_sys->i_duration);
187 case DEMUX_SET_POSITION:
188 f = (double)va_arg( args, double );
189 i64 = f * (double)p_sys->i_duration;
190 p_sys->i_first_pts = p_sys->i_last_pts - i64;
191 p_sys->i_end_pts = p_sys->i_first_pts + p_sys->i_duration;
195 pi64 = (int64_t *)va_arg( args, int64_t * );
196 if ( p_sys->i_duration )
197 *pi64 = p_sys->i_last_pts - p_sys->i_first_pts;
199 *pi64 = p_sys->i_last_pts;
202 case DEMUX_GET_LENGTH:
203 pi64 = (int64_t*)va_arg( args, int64_t * );
204 *pi64 = p_sys->i_duration;
208 i64 = (int64_t)va_arg( args, int64_t );
209 p_sys->i_first_pts = p_sys->i_last_pts - i64;
210 p_sys->i_end_pts = p_sys->i_first_pts + p_sys->i_duration;
213 /* TODO implement others */
221 /*****************************************************************************
223 *****************************************************************************/
224 static int Demux( demux_t *p_demux )
226 demux_sys_t *p_sys = p_demux->p_sys;
227 block_t *p_block = block_New( p_demux, 1 );
229 if ( !p_sys->i_last_pts )
231 p_sys->i_last_pts = p_sys->i_first_pts = mdate();
232 if ( p_sys->i_duration )
233 p_sys->i_end_pts = p_sys->i_first_pts + p_sys->i_duration;
237 p_sys->i_last_pts += (mtime_t)(1000000.0 / p_sys->f_fps);
238 if ( p_sys->i_duration && p_sys->i_last_pts > p_sys->i_end_pts )
240 mwait( p_sys->i_last_pts );
243 p_block->i_flags |= BLOCK_FLAG_TYPE_I;
244 p_block->i_dts = p_block->i_pts = p_sys->i_last_pts;
246 es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block->i_pts );
247 es_out_Send( p_demux->out, p_sys->p_es_video, p_block );