root/modules/misc/dummy/decoder.c

Revision 670651eeeb78021b18d936ef2eac88ef706d9ffb, 4.9 kB (checked in by Rémi Denis-Courmont <rdenis@simphalempin.com>, 2 months ago)

Use objet pointer as unique ID (plugins)

(By the way, snapshot-id looks like a write only variable...)

  • Property mode set to 100644
Line 
1 /*****************************************************************************
2  * decoder.c: dummy decoder plugin for vlc.
3  *****************************************************************************
4  * Copyright (C) 2002 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.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 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
30
31 #include <vlc_common.h>
32 #include <vlc_codec.h>
33
34 #ifdef HAVE_UNISTD_H
35 #   include <unistd.h> /* write(), close() */
36 #elif defined( WIN32 ) && !defined( UNDER_CE )
37 #   include <io.h>
38 #endif
39 #ifdef HAVE_SYS_TYPES_H
40 #   include <sys/types.h> /* open() */
41 #endif
42 #ifdef HAVE_SYS_STAT_H
43 #   include <sys/stat.h>
44 #endif
45 #ifdef HAVE_FCNTL_H
46 #   include <fcntl.h>
47 #endif
48
49 #include <limits.h> /* PATH_MAX */
50
51
52 #include "dummy.h"
53
54 /*****************************************************************************
55  * decoder_sys_t : theora decoder descriptor
56  *****************************************************************************/
57 struct decoder_sys_t
58 {
59     int i_fd;
60 };
61
62 /*****************************************************************************
63  * Local prototypes
64  *****************************************************************************/
65 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block );
66
67 /*****************************************************************************
68  * OpenDecoder: Open the decoder
69  *****************************************************************************/
70 int OpenDecoder ( vlc_object_t *p_this )
71 {
72     decoder_t *p_dec = (decoder_t*)p_this;
73     decoder_sys_t *p_sys;
74     char psz_file[ PATH_MAX ];
75     vlc_value_t val;
76
77     /* Allocate the memory needed to store the decoder's structure */
78     if( ( p_dec->p_sys = p_sys =
79           (decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
80     {
81         msg_Err( p_dec, "out of memory" );
82         return VLC_EGENERIC;
83     }
84
85     snprintf( psz_file, sizeof( psz_file), "stream.%p", p_dec );
86
87 #ifndef UNDER_CE
88     var_Create( p_dec, "dummy-save-es", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
89     var_Get( p_dec, "dummy-save-es", &val );
90     if( val.b_bool )
91     {
92         p_sys->i_fd = open( psz_file, O_WRONLY | O_CREAT | O_TRUNC, 00644 );
93
94         if( p_sys->i_fd == -1 )
95         {
96             msg_Err( p_dec, "cannot create `%s'", psz_file );
97             return VLC_EGENERIC;
98         }
99
100         msg_Dbg( p_dec, "dumping stream to file `%s'", psz_file );
101     }
102     else
103 #endif
104     {
105         p_sys->i_fd = -1;
106     }
107
108     /* Set callbacks */
109     p_dec->pf_decode_video = (picture_t *(*)(decoder_t *, block_t **))
110         DecodeBlock;
111     p_dec->pf_decode_audio = (aout_buffer_t *(*)(decoder_t *, block_t **))
112         DecodeBlock;
113     p_dec->pf_decode_sub = (subpicture_t *(*)(decoder_t *, block_t **))
114         DecodeBlock;
115
116     return VLC_SUCCESS;
117 }
118
119 /****************************************************************************
120  * RunDecoder: the whole thing
121  ****************************************************************************
122  * This function must be fed with ogg packets.
123  ****************************************************************************/
124 static void *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
125 {
126     decoder_sys_t *p_sys = p_dec->p_sys;
127     block_t *p_block;
128
129     if( !pp_block || !*pp_block ) return NULL;
130     p_block = *pp_block;
131
132     if( p_sys->i_fd >= 0 && p_block->i_buffer )
133     {
134 #ifndef UNDER_CE
135         write( p_sys->i_fd, p_block->p_buffer, p_block->i_buffer );
136 #endif
137
138         msg_Dbg( p_dec, "dumped %zu bytes", p_block->i_buffer );
139     }
140
141     block_Release( p_block );
142     return NULL;
143 }
144
145 /*****************************************************************************
146  * CloseDecoder: decoder destruction
147  *****************************************************************************/
148 void CloseDecoder ( vlc_object_t *p_this )
149 {
150     decoder_t *p_dec = (decoder_t *)p_this;
151     decoder_sys_t *p_sys = p_dec->p_sys;
152
153 #ifndef UNDER_CE
154     if( p_sys->i_fd >= 0 ) close( p_sys->i_fd );
155 #endif
156
157     free( p_sys );
158 }
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