mirror of
https://code.videolan.org/videolan/vlc
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439 lines
14 KiB
C
439 lines
14 KiB
C
/*****************************************************************************
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* gnomevfs.c: GnomeVFS input
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*****************************************************************************
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* Copyright (C) 2005 the VideoLAN team
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* $Id$
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*
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* Authors: Benjamin Pracht <bigben -AT- videolan -DOT- org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#include <vlc/vlc.h>
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#include <vlc/input.h>
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#include <libgnomevfs/gnome-vfs.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "charset.h"
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#include "network.h"
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int Open ( vlc_object_t * );
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static void Close( vlc_object_t * );
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#define CACHING_TEXT N_("Caching value in ms")
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#define CACHING_LONGTEXT N_( \
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"Allows you to modify the default caching value for GnomeVFS streams."\
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"This value should be set in millisecond units." )
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vlc_module_begin();
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set_description( _("GnomeVFS filesystem file input") );
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set_shortname( "GnomeVFS" );
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set_category( CAT_INPUT );
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set_subcategory( SUBCAT_INPUT_ACCESS );
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add_integer( "gnomevfs-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
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set_capability( "access2", 10 );
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add_shortcut( "gnomevfs" );
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set_callbacks( Open, Close );
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vlc_module_end();
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/*****************************************************************************
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* Exported prototypes
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*****************************************************************************/
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static int Seek( access_t *, int64_t );
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static int Read( access_t *, uint8_t *, int );
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static int Control( access_t *, int, va_list );
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struct access_sys_t
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{
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unsigned int i_nb_reads;
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char *psz_name;
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GnomeVFSHandle *p_handle;
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GnomeVFSFileInfo *p_file_info;
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vlc_bool_t b_local;
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vlc_bool_t b_seekable;
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vlc_bool_t b_pace_control;
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};
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/*****************************************************************************
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* Open: open the file
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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access_t *p_access = (access_t*)p_this;
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access_sys_t *p_sys = NULL;
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char *psz_name = NULL;
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char *psz = NULL;
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char *psz_uri = NULL;
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char *psz_unescaped = NULL;
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char *psz_expand_tilde = NULL;
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GnomeVFSURI *p_uri = NULL;
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GnomeVFSResult i_ret;
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GnomeVFSHandle *p_handle = NULL;
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if( !(gnome_vfs_init()) )
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{
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msg_Warn( p_access, "couldn't initilize GnomeVFS" );
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return VLC_EGENERIC;
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}
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/* FIXME
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Since GnomeVFS segfaults on exit if we initialize it without trying to
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open a file with a valid protocol, try to open at least file:// */
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gnome_vfs_open( &p_handle, "file://", 5 );
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p_access->pf_read = Read;
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p_access->pf_block = NULL;
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p_access->pf_seek = Seek;
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p_access->pf_control = Control;
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p_access->info.i_update = 0;
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p_access->info.i_size = 0;
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p_access->info.i_pos = 0;
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p_access->info.b_eof = VLC_FALSE;
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p_access->info.i_title = 0;
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p_access->info.i_seekpoint = 0;
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p_access->p_sys = p_sys = malloc( sizeof( access_sys_t ) );
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if( !p_sys )
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return VLC_ENOMEM;
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p_sys->p_handle = p_handle;
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p_sys->i_nb_reads = 0;
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p_sys->b_pace_control = VLC_TRUE;
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if( strcmp( "gnomevfs", p_access->psz_access ) &&
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*(p_access->psz_access) != '\0')
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{
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psz_name = malloc( strlen( p_access->psz_access ) +
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strlen( p_access->psz_path ) + 4 );
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sprintf( psz_name, "%s://%s", p_access->psz_access,
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p_access->psz_path );
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}
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else
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{
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psz_name = strdup( p_access->psz_path );
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}
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psz = ToLocale( psz_name );
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psz_expand_tilde = gnome_vfs_expand_initial_tilde( psz );
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LocaleFree( psz );
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psz_unescaped = gnome_vfs_make_uri_from_shell_arg( psz_expand_tilde );
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/* gnome_vfs_make_uri_from_shell_arg will only escape the uri
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for relative paths. So we need to use
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gnome_vfs_escape_host_and_path_string in other cases. */
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if( !strcmp( psz_unescaped, psz_expand_tilde ) )
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{
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/* Now we are sure that we have a complete valid unescaped URI beginning
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with the protocol. We want to escape it. However, gnomevfs's escaping
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function are broken and will try to escape characters un the username/
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password field. So parse the URI with vlc_UrlParse ans only escape the
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path */
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vlc_url_t url;
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char *psz_escaped_path;
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char *psz_path_begin;
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vlc_UrlParse( &url, psz_unescaped, 0 );
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psz_escaped_path = gnome_vfs_escape_path_string( url.psz_path );
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if( psz_escaped_path )
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{
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/* Now let's reconstruct a valid URI from all that stuff */
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psz_path_begin = psz_unescaped + strlen( psz_unescaped )
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- strlen( url.psz_path );
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*psz_path_begin = '\0';
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psz_uri = malloc( strlen( psz_unescaped ) +
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strlen( psz_escaped_path ) + 1 );
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sprintf( psz_uri, "%s%s",psz_unescaped, psz_escaped_path );
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g_free( psz_escaped_path );
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g_free( psz_unescaped );
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}
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else
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{
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psz_uri = psz_unescaped;
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}
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}
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else
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{
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psz_uri = psz_unescaped;
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}
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g_free( psz_expand_tilde );
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p_uri = gnome_vfs_uri_new( psz_uri );
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if( p_uri )
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{
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p_sys->p_file_info = gnome_vfs_file_info_new();
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i_ret = gnome_vfs_get_file_info_uri( p_uri,
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p_sys->p_file_info, 8 );
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if( i_ret )
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{
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msg_Warn( p_access, "cannot get file info for uri %s (%s)",
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psz_uri, gnome_vfs_result_to_string( i_ret ) );
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gnome_vfs_file_info_unref( p_sys->p_file_info );
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gnome_vfs_uri_unref( p_uri);
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free( p_sys );
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g_free( psz_uri );
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free( psz_name );
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return VLC_EGENERIC;
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}
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}
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else
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{
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msg_Warn( p_access, "cannot parse MRL %s or unsupported protocol", psz_name );
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g_free( psz_uri );
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free( p_sys );
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free( psz_name );
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return VLC_EGENERIC;
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}
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msg_Dbg( p_access, "opening file `%s'", psz_uri );
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i_ret = gnome_vfs_open( &(p_sys->p_handle), psz_uri, 5 );
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if( i_ret )
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{
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msg_Warn( p_access, "cannot open file %s: %s", psz_uri,
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gnome_vfs_result_to_string( i_ret ) );
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gnome_vfs_uri_unref( p_uri);
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g_free( psz_uri );
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free( p_sys );
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free( psz_name );
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return VLC_EGENERIC;
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}
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if (GNOME_VFS_FILE_INFO_LOCAL( p_sys->p_file_info ))
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{
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p_sys->b_local = VLC_TRUE;
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}
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if( p_sys->p_file_info->type == GNOME_VFS_FILE_TYPE_REGULAR ||
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p_sys->p_file_info->type == GNOME_VFS_FILE_TYPE_CHARACTER_DEVICE ||
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p_sys->p_file_info->type == GNOME_VFS_FILE_TYPE_BLOCK_DEVICE )
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{
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p_sys->b_seekable = VLC_TRUE;
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p_access->info.i_size = (int64_t)(p_sys->p_file_info->size);
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}
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else if( p_sys->p_file_info->type == GNOME_VFS_FILE_TYPE_FIFO
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|| p_sys->p_file_info->type == GNOME_VFS_FILE_TYPE_SOCKET )
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{
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p_sys->b_seekable = VLC_FALSE;
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}
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else
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{
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msg_Err( p_access, "unknown file type for `%s'", psz_name );
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return VLC_EGENERIC;
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}
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if( p_sys->b_seekable && !p_access->info.i_size )
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{
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/* FIXME that's bad because all others access will be probed */
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msg_Warn( p_access, "file %s is empty, aborting", psz_name );
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gnome_vfs_file_info_unref( p_sys->p_file_info );
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gnome_vfs_uri_unref( p_uri);
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free( p_sys );
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g_free( psz_uri );
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free( psz_name );
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return VLC_EGENERIC;
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}
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/* Update default_pts to a suitable value for file access */
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var_Create( p_access, "gnomevfs-caching",
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VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
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g_free( psz_uri );
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p_sys->psz_name = psz_name;
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gnome_vfs_uri_unref( p_uri);
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Close: close the target
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*****************************************************************************/
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static void Close( vlc_object_t * p_this )
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{
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access_t *p_access = (access_t*)p_this;
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access_sys_t *p_sys = p_access->p_sys;
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int i_result;
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i_result = gnome_vfs_close( p_sys->p_handle );
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if( i_result )
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{
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msg_Err( p_access, "cannot close %s: %s", p_sys->psz_name,
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gnome_vfs_result_to_string( i_result ) );
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}
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gnome_vfs_file_info_unref( p_sys->p_file_info );
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free( p_sys->psz_name );
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free( p_sys );
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}
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/*****************************************************************************
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* Read: standard read on a file descriptor.
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*****************************************************************************/
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static int Read( access_t *p_access, uint8_t *p_buffer, int i_len )
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{
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access_sys_t *p_sys = p_access->p_sys;
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GnomeVFSFileSize i_read_len;
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int i_ret;
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i_ret = gnome_vfs_read( p_sys->p_handle, p_buffer,
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(GnomeVFSFileSize)i_len, &i_read_len );
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if( i_ret )
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{
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p_access->info.b_eof = VLC_TRUE;
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if( i_ret != GNOME_VFS_ERROR_EOF )
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{
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msg_Err( p_access, "read failed (%s)",
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gnome_vfs_result_to_string( i_ret ) );
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}
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}
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else
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{
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p_sys->i_nb_reads++;
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if( p_access->info.i_size != 0 &&
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(p_sys->i_nb_reads % INPUT_FSTAT_NB_READS) == 0 &&
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p_sys->b_local )
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{
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gnome_vfs_file_info_clear( p_sys->p_file_info );
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i_ret = gnome_vfs_get_file_info_from_handle( p_sys->p_handle,
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p_sys->p_file_info, 8 );
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if( i_ret )
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{
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msg_Warn( p_access, "couldn't get file properties again (%s)",
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gnome_vfs_result_to_string( i_ret ) );
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}
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else
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{
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p_access->info.i_size = (int64_t)(p_sys->p_file_info->size);
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}
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}
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}
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p_access->info.i_pos += (int64_t)i_read_len;
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/* Some Acces (http) never return EOF and loop on the file */
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if( p_access->info.i_pos > p_access->info.i_size )
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{
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p_access->info.b_eof = VLC_TRUE;
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return 0;
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}
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return (int)i_read_len;
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}
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/*****************************************************************************
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* Seek: seek to a specific location in a file
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*****************************************************************************/
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static int Seek( access_t *p_access, int64_t i_pos )
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{
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access_sys_t *p_sys = p_access->p_sys;
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int i_ret;
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i_ret = gnome_vfs_seek( p_sys->p_handle, GNOME_VFS_SEEK_START,
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(GnomeVFSFileOffset)i_pos);
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if ( !i_ret )
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{
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p_access->info.i_pos = i_pos;
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}
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else
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{
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GnomeVFSFileSize i_offset;
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msg_Err( p_access, "cannot seek (%s)",
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gnome_vfs_result_to_string( i_ret ) );
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i_ret = gnome_vfs_tell( p_sys->p_handle, &i_offset );
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if( !i_ret )
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{
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msg_Err( p_access, "cannot tell the current position (%s)",
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gnome_vfs_result_to_string( i_ret ) );
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return VLC_EGENERIC;
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}
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}
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/* Reset eof */
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p_access->info.b_eof = VLC_FALSE;
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/* FIXME */
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Control:
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*****************************************************************************/
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static int Control( access_t *p_access, int i_query, va_list args )
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{
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access_sys_t *p_sys = p_access->p_sys;
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vlc_bool_t *pb_bool;
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int *pi_int;
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int64_t *pi_64;
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switch( i_query )
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{
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/* */
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case ACCESS_CAN_SEEK:
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case ACCESS_CAN_FASTSEEK:
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pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
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*pb_bool = p_sys->b_seekable;
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break;
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case ACCESS_CAN_PAUSE:
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case ACCESS_CAN_CONTROL_PACE:
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pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t* );
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*pb_bool = p_sys->b_pace_control;
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break;
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/* */
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case ACCESS_GET_MTU:
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pi_int = (int*)va_arg( args, int * );
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*pi_int = 0;
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break;
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case ACCESS_GET_PTS_DELAY:
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pi_64 = (int64_t*)va_arg( args, int64_t * );
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*pi_64 = var_GetInteger( p_access,
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"gnomevfs-caching" ) * I64C(1000);
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break;
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/* */
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case ACCESS_SET_PAUSE_STATE:
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/* Nothing to do */
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break;
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case ACCESS_GET_TITLE_INFO:
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case ACCESS_SET_TITLE:
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case ACCESS_SET_SEEKPOINT:
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case ACCESS_SET_PRIVATE_ID_STATE:
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case ACCESS_GET_META:
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return VLC_EGENERIC;
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default:
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msg_Warn( p_access, "unimplemented query in control" );
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return VLC_EGENERIC;
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}
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return VLC_SUCCESS;
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}
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