root/modules/stream_out/description.c

Revision 3561b9b28f58eb7a4183e158a8fd973800d31ceb, 5.0 kB (checked in by Rémi Denis-Courmont <rdenis@simphalempin.com>, 3 months ago)

Plugins: include vlc_common.h directly instead of vlc/vlc.h

  • Property mode set to 100644
Line 
1 /*****************************************************************************
2  * description.c: description stream output module (gathers ES info)
3  *****************************************************************************
4  * Copyright (C) 2003-2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Gildas Bazin <gbazin@videolan.org>
8  *
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.
13  *
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.
18  *
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  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31
32 #include <vlc_common.h>
33 #include <vlc_plugin.h>
34 #include <vlc_input.h>
35 #include <vlc_block.h>
36 #include <vlc_sout.h>
37
38 #include <assert.h>
39
40 /*****************************************************************************
41  * Exported prototypes
42  *****************************************************************************/
43 static int      Open    ( vlc_object_t * );
44 static void     Close   ( vlc_object_t * );
45
46 static sout_stream_id_t *Add ( sout_stream_t *, es_format_t * );
47 static int               Del ( sout_stream_t *, sout_stream_id_t * );
48 static int               Send( sout_stream_t *, sout_stream_id_t *, block_t* );
49
50 /*****************************************************************************
51  * Module descriptor
52  *****************************************************************************/
53 vlc_module_begin();
54     set_description( N_("Description stream output") );
55     set_capability( "sout stream", 50 );
56     add_shortcut( "description" );
57     set_callbacks( Open, Close );
58 vlc_module_end();
59
60 struct sout_stream_sys_t
61 {
62     input_thread_t *p_input;
63
64     mtime_t i_stream_start;
65 };
66
67 struct sout_stream_id_t
68 {
69     int i_d_u_m_m_y;
70 };
71
72 /*****************************************************************************
73  * Open:
74  *****************************************************************************/
75 static int Open( vlc_object_t *p_this )
76 {
77     sout_stream_t *p_stream = (sout_stream_t*)p_this;
78     sout_stream_sys_t *p_sys;
79
80     p_stream->pf_add  = Add;
81     p_stream->pf_del  = Del;
82     p_stream->pf_send = Send;
83     p_sys = p_stream->p_sys = malloc(sizeof(sout_stream_sys_t));
84
85     p_sys->p_input = NULL;
86
87     p_sys->i_stream_start = 0;
88
89     return VLC_SUCCESS;
90 }
91
92 /*****************************************************************************
93  * Close:
94  *****************************************************************************/
95 static void Close( vlc_object_t *p_this )
96 {
97     sout_stream_t *p_stream = (sout_stream_t *)p_this;
98     sout_stream_sys_t *p_sys = p_stream->p_sys;
99
100     msg_Dbg( p_this, "Closing" );
101
102     free( p_sys );
103 }
104
105 static sout_stream_id_t *Add( sout_stream_t *p_stream, es_format_t *p_fmt )
106 {
107     sout_stream_sys_t *p_sys = p_stream->p_sys;
108     sout_stream_id_t *id;
109     es_format_t *p_fmt_copy;
110     input_item_t *p_item;
111
112     msg_Dbg( p_stream, "Adding a stream" );
113
114     if( !p_sys->p_input )
115     {
116         p_sys->p_input = vlc_object_find( p_stream, VLC_OBJECT_INPUT,
117                 FIND_PARENT );
118         /* This module is a children of the input object
119          * We don't want to keep a reference on it, because we will be alive
120          * as long as the input is alive.
121          *
122          * Since vlc_object_find() increments the reference count,
123          * we release the input just after finding it.
124          * */
125         assert( p_sys->p_input );
126         vlc_object_release( p_sys->p_input );
127     }
128  
129     p_item = input_GetItem(p_sys->p_input);
130
131     p_fmt_copy = malloc(sizeof(es_format_t));
132     es_format_Copy( p_fmt_copy, p_fmt );
133
134     vlc_mutex_lock( &p_item->lock );
135     TAB_APPEND( p_item->i_es, p_item->es, p_fmt_copy );
136     vlc_mutex_unlock( &p_item->lock );
137
138     if( p_sys->i_stream_start <= 0 )
139         p_sys->i_stream_start = mdate();
140
141     id = malloc( sizeof( sout_stream_id_t ) );
142     id->i_d_u_m_m_y = 0;
143     return id;
144 }
145
146 static int Del( sout_stream_t *p_stream, sout_stream_id_t *id )
147 {
148     msg_Dbg( p_stream, "Removing a stream" );
149
150     free( id );
151     return VLC_SUCCESS;
152 }
153
154 static int Send( sout_stream_t *p_stream, sout_stream_id_t *id,
155                  block_t *p_buffer )
156 {
157     VLC_UNUSED(id);
158     sout_stream_sys_t *p_sys = p_stream->p_sys;
159
160     block_ChainRelease( p_buffer );
161
162     if( p_sys->p_input && p_sys->i_stream_start + 1500000 < mdate() )
163         p_sys->p_input->b_eof = true;
164
165     return VLC_SUCCESS;
166 }
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