1 /*****************************************************************************
2 * demuxdump.c : Pseudo demux module for vlc (dump raw stream)
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
7 * Authors: Laurent Aimar <fenrir@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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
28 #include <string.h> /* strdup() */
32 #include <vlc/input.h>
34 /*****************************************************************************
36 *****************************************************************************/
37 #define FILE_TEXT N_("Filename of dump")
38 #define FILE_LONGTEXT N_( \
39 "Specify a file name to which the raw stream will be dumped." )
40 #define APPEND_TEXT N_("Append")
41 #define APPEND_LONGTEXT N_( \
42 "If the file exists and this option is selected, the existing file " \
43 "will not be overwritten." )
45 static int Open( vlc_object_t * );
46 static void Close ( vlc_object_t * );
49 set_category( CAT_INPUT );
50 set_subcategory( SUBCAT_INPUT_DEMUX );
51 set_description( _("Filedump demuxer") );
52 set_capability( "demux2", 0 );
53 add_file( "demuxdump-file", "stream-demux.dump", NULL, FILE_TEXT,
54 FILE_LONGTEXT, VLC_FALSE );
55 add_bool( "demuxdump-append", 0, NULL, APPEND_TEXT, APPEND_LONGTEXT,
57 set_callbacks( Open, Close );
58 add_shortcut( "dump" );
62 /*****************************************************************************
64 *****************************************************************************/
65 static int Demux( demux_t * );
66 static int Control( demux_t *, int,va_list );
68 #define DUMP_BLOCKSIZE 16384
76 uint8_t buffer[DUMP_BLOCKSIZE];
80 * Data reading functions
83 /*****************************************************************************
84 * Open: initializes dump structures
85 *****************************************************************************/
86 static int Open( vlc_object_t * p_this )
88 demux_t *p_demux = (demux_t*)p_this;
94 /* Accept only if forced */
95 if( strcasecmp( p_demux->psz_demux, "dump" ) )
98 var_Create( p_demux, "demuxdump-append", VLC_VAR_BOOL|VLC_VAR_DOINHERIT );
99 var_Get( p_demux, "demuxdump-append", &val );
100 b_append = val.b_bool;
106 p_demux->pf_demux = Demux;
107 p_demux->pf_control = Control;
108 p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
110 p_sys->p_file = NULL;
111 p_sys->psz_file = var_CreateGetString( p_demux, "demuxdump-file" );
112 if( *p_sys->psz_file == '\0' )
114 msg_Warn( p_demux, "no dump file name given" );
118 if( !strcmp( p_sys->psz_file, "-" ) )
120 msg_Info( p_demux, "dumping raw stream to standard output" );
121 p_sys->p_file = stdout;
123 else if( ( p_sys->p_file = fopen( p_sys->psz_file, psz_mode ) ) == NULL )
125 msg_Err( p_demux, "cannot create `%s' for writing", p_sys->psz_file );
130 msg_Info( p_demux, "%s raw stream to file `%s'",
131 b_append ? "appending" : "dumping", p_sys->psz_file );
136 /*****************************************************************************
138 *****************************************************************************/
139 static void Close( vlc_object_t *p_this )
142 demux_t *p_demux = (demux_t*)p_this;
143 demux_sys_t *p_sys = p_demux->p_sys;
145 msg_Info( p_demux ,"closing %s ("I64Fd" Kbytes dumped)", p_sys->psz_file,
146 p_sys->i_write / 1024 );
148 if( p_sys->p_file != stdout )
150 fclose( p_sys->p_file );
152 free( p_sys->psz_file );
157 /*****************************************************************************
158 * Demux: reads and demuxes data packets
159 *****************************************************************************
160 * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
161 *****************************************************************************/
162 static int Demux( demux_t *p_demux )
164 demux_sys_t *p_sys = p_demux->p_sys;
168 /* I'm pretty sure that stream_Peek,stream_Read( , NULL ) would be faster*/
169 i_data = stream_Read( p_demux->s, p_sys->buffer, DUMP_BLOCKSIZE );
173 i_data = fwrite( p_sys->buffer, 1, i_data, p_sys->p_file );
177 msg_Err( p_demux, "failed to write data" );
181 msg_Dbg( p_demux, "dumped %d bytes", i_data );
184 p_sys->i_write += i_data;
189 /*****************************************************************************
190 * Demux: reads and demuxes data packets
191 *****************************************************************************/
192 static int Control( demux_t *p_demux, int i_query, va_list args )
194 return demux2_vaControlHelper( p_demux->s, 0, -1, 0, 1, i_query, args );