1 /*****************************************************************************
2 * mtp.c: mtp input (mtp: access plug-in)
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
5 * Copyright © 2006-2008 Rémi Denis-Courmont
7 * Authors: Fabio Ritrovato <exsephiroth87@gmail.com>
8 * Original file.c: Christophe Massiot <massiot@via.ecp.fr>
9 * Rémi Denis-Courmont <rem # videolan # org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
26 /*****************************************************************************
28 *****************************************************************************/
33 #include <vlc_common.h>
34 #include <vlc_plugin.h>
35 #include <vlc_input.h>
36 #include <vlc_access.h>
37 #include <vlc_dialog.h>
41 #include <sys/types.h>
42 #ifdef HAVE_SYS_STAT_H
43 # include <sys/stat.h>
56 /*****************************************************************************
58 *****************************************************************************/
60 static int Open ( vlc_object_t * );
61 static void Close( vlc_object_t * );
63 #define CACHING_TEXT N_("Caching value in ms")
64 #define CACHING_LONGTEXT N_( \
65 "Caching value for files. This " \
66 "value should be set in milliseconds." )
69 set_description( N_("MTP input") )
70 set_shortname( N_("MTP") )
71 set_category( CAT_INPUT )
72 set_subcategory( SUBCAT_INPUT_ACCESS )
73 set_capability( "access", 0 )
75 set_callbacks( Open, Close )
78 /*****************************************************************************
80 *****************************************************************************/
82 static int Seek( access_t *, uint64_t );
83 static ssize_t Read( access_t *, uint8_t *, size_t );
84 static int Control( access_t *, int, va_list );
86 static int open_file( access_t *, const char * );
90 unsigned int i_nb_reads;
94 /*****************************************************************************
96 *****************************************************************************/
97 static int Open( vlc_object_t *p_this )
99 access_t *p_access = ( access_t* )p_this;
103 uint16_t i_product_id;
105 LIBMTP_raw_device_t *p_rawdevices;
106 LIBMTP_mtpdevice_t *p_device;
110 /* Update default_pts to a suitable value for file access */
111 var_Create( p_access, "file-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
113 if( sscanf( p_access->psz_location, "%"SCNu32":%"SCNu8":%"SCNu16":%d",
114 &i_bus, &i_dev, &i_product_id, &i_track_id ) != 4 )
116 i_ret = LIBMTP_Detect_Raw_Devices( &p_rawdevices, &i_numrawdevices );
117 if( i_ret != 0 || i_numrawdevices <= 0 || !p_rawdevices )
120 for( int i = 0; i < i_numrawdevices; i++ )
122 if( i_bus == p_rawdevices[i].bus_location &&
123 i_dev == p_rawdevices[i].devnum &&
124 i_product_id == p_rawdevices[i].device_entry.product_id )
126 if( ( p_device = LIBMTP_Open_Raw_Device( &p_rawdevices[i] )
129 free( p_access->psz_filepath );
130 #warning Oooh no! Not tempnam()!
131 p_access->psz_filepath = tempnam( NULL, "vlc" );
132 if( p_access->psz_filepath == NULL )
134 LIBMTP_Release_Device( p_device );
135 free( p_rawdevices );
140 msg_Dbg( p_access, "About to write %s",
141 p_access->psz_filepath );
142 LIBMTP_Get_File_To_File( p_device, i_track_id,
143 p_access->psz_filepath, NULL,
145 LIBMTP_Release_Device( p_device );
151 free( p_rawdevices );
156 free( p_rawdevices );
158 STANDARD_READ_ACCESS_INIT;
159 p_sys->i_nb_reads = 0;
160 int fd = p_sys->fd = -1;
163 msg_Dbg( p_access, "opening file `%s'", p_access->psz_filepath );
164 fd = open_file( p_access, p_access->psz_filepath );
173 #ifdef HAVE_SYS_STAT_H
175 if( fstat( fd, &st ) )
176 msg_Err( p_access, "fstat(%d): %m", fd );
177 p_access->info.i_size = st.st_size;
179 # warning File size not known!
185 /*****************************************************************************
186 * Close: close the target
187 *****************************************************************************/
188 static void Close( vlc_object_t * p_this )
190 access_t *p_access = ( access_t* )p_this;
191 access_sys_t *p_sys = p_access->p_sys;
194 if( vlc_unlink( p_access->psz_filepath ) != 0 )
195 msg_Err( p_access, "Error deleting file %s, %m",
196 p_access->psz_filepath );
200 /*****************************************************************************
201 * Read: standard read on a file descriptor.
202 *****************************************************************************/
203 static ssize_t Read( access_t *p_access, uint8_t *p_buffer, size_t i_len )
205 access_sys_t *p_sys = p_access->p_sys;
209 i_ret = read( fd, p_buffer, i_len );
220 msg_Err( p_access, "read failed (%m)" );
221 dialog_Fatal( p_access, _( "File reading failed" ), "%s",
222 _( "VLC could not read the file." ) );
223 p_access->info.b_eof = true;
228 p_access->info.i_pos += i_ret;
230 p_access->info.b_eof = true;
238 /*****************************************************************************
239 * Seek: seek to a specific location in a file
240 *****************************************************************************/
241 static int Seek( access_t *p_access, uint64_t i_pos )
243 p_access->info.i_pos = i_pos;
244 p_access->info.b_eof = false;
246 lseek( p_access->p_sys->fd, i_pos, SEEK_SET );
250 /*****************************************************************************
252 *****************************************************************************/
253 static int Control( access_t *p_access, int i_query, va_list args )
261 case ACCESS_CAN_SEEK:
262 case ACCESS_CAN_FASTSEEK:
263 pb_bool = ( bool* )va_arg( args, bool* );
267 case ACCESS_CAN_PAUSE:
268 case ACCESS_CAN_CONTROL_PACE:
269 pb_bool = ( bool* )va_arg( args, bool* );
273 case ACCESS_GET_PTS_DELAY:
274 pi_64 = ( int64_t* )va_arg( args, int64_t * );
275 *pi_64 = var_GetInteger( p_access, "file-caching" ) * INT64_C( 1000 );
279 case ACCESS_SET_PAUSE_STATE:
283 case ACCESS_GET_TITLE_INFO:
284 case ACCESS_SET_TITLE:
285 case ACCESS_SET_SEEKPOINT:
286 case ACCESS_SET_PRIVATE_ID_STATE:
287 case ACCESS_GET_META:
288 case ACCESS_GET_PRIVATE_ID_STATE:
289 case ACCESS_GET_CONTENT_TYPE:
293 msg_Warn( p_access, "unimplemented query %d in control", i_query );
300 /*****************************************************************************
301 * open_file: Opens a specific file
302 *****************************************************************************/
303 static int open_file( access_t *p_access, const char *path )
305 int fd = vlc_open( path, O_RDONLY | O_NONBLOCK );
308 msg_Err( p_access, "cannot open file %s (%m)", path );
309 dialog_Fatal( p_access, _( "File reading failed" ),
310 _( "VLC could not open the file \"%s\"." ), path );
314 #if defined( HAVE_FCNTL )
315 fcntl( fd, F_SETFD, fcntl( fd, F_GETFD ) | FD_CLOEXEC );
317 /* We'd rather use any available memory for reading ahead
318 * than for caching what we've already seen/heard */
319 # if defined( F_RDAHEAD )
320 fcntl( fd, F_RDAHEAD, 1 );
322 # if defined( F_NOCACHE )
323 fcntl( fd, F_NOCACHE, 1 );