mirror of https://code.videolan.org/videolan/vlc
1001 lines
32 KiB
C
1001 lines
32 KiB
C
/*****************************************************************************
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* rss.c : rss/atom feed display video plugin for vlc
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*****************************************************************************
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* Copyright (C) 2003-2006 VLC authors and VideoLAN
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*
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* Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
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* Rémi Duraffort <ivoire -at- videolan -dot- org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Atom : http://www.ietf.org/rfc/rfc4287.txt
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* RSS : http://www.rssboard.org/rss-specification
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <time.h>
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#include "common.h"
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#include <vlc_common.h>
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#include <vlc_configuration.h>
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#include <vlc_plugin.h>
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#include <vlc_filter.h>
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#include <vlc_subpicture.h>
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#include <vlc_block.h>
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#include <vlc_stream.h>
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#include <vlc_xml.h>
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#include <vlc_charset.h>
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#include <vlc_image.h>
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int CreateFilter ( filter_t * );
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static void DestroyFilter( filter_t * );
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static subpicture_t *Filter( filter_t *, vlc_tick_t );
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static struct rss_feed_t *FetchRSS( filter_t * );
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static void FreeRSS( struct rss_feed_t *, int );
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static int ParseUrls( filter_t *, char * );
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static void Fetch( void * );
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static const int pi_color_values[] = {
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0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
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0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
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0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
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0x00000080, 0x000000FF, 0x0000FFFF};
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static const char *const ppsz_color_descriptions[] = {
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N_("Default"), N_("Black"),
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N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
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N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
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N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
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N_("Aqua") };
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static const char s_init_title[] = "";
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/*****************************************************************************
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* filter_sys_t: rss filter descriptor
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*****************************************************************************/
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typedef struct rss_item_t
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{
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char *psz_title;
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char *psz_description;
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char *psz_link;
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} rss_item_t;
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typedef struct rss_feed_t
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{
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char *psz_url;
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char *psz_title;
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char *psz_description;
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char *psz_link;
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char *psz_image;
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picture_t *p_pic;
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int i_items;
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rss_item_t *p_items;
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} rss_feed_t;
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typedef struct
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{
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vlc_mutex_t lock;
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vlc_timer_t timer; /* Timer to refresh the rss feeds */
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bool b_fetched;
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int i_xoff, i_yoff; /* positioning offsets */
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int i_pos; /* positioning: absolute, or relative location (top, bottom, left, right, center) */
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vlc_tick_t i_speed;
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int i_length;
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char *psz_marquee; /* marquee string */
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text_style_t *p_style; /* font control */
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vlc_tick_t last_date;
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int i_feeds;
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rss_feed_t *p_feeds;
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bool b_images;
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int i_title;
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int i_cur_feed;
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int i_cur_item;
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int i_cur_char;
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} filter_sys_t;
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#define MSG_TEXT N_("Feed URLs")
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#define MSG_LONGTEXT N_("RSS/Atom feed '|' (pipe) separated URLs.")
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#define SPEED_TEXT N_("Speed of feeds")
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#define SPEED_LONGTEXT N_("Speed of the RSS/Atom feeds in microseconds (bigger is slower).")
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#define LENGTH_TEXT N_("Max length")
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#define LENGTH_LONGTEXT N_("Maximum number of characters displayed on the " \
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"screen." )
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#define TTL_TEXT N_("Refresh time")
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#define TTL_LONGTEXT N_("Number of seconds between each forced refresh " \
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"of the feeds. 0 means that the feeds are never updated." )
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#define IMAGE_TEXT N_("Feed images")
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#define IMAGE_LONGTEXT N_("Display feed images if available.")
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#define SIZE_TEXT N_("Font size, pixels")
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#define SIZE_LONGTEXT N_("Font size, in pixels. Default is 0 (use default " \
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"font size)." )
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#define COLOR_TEXT N_("Color")
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#define COLOR_LONGTEXT N_("Color of the text that will be rendered on "\
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"the video. This must be an hexadecimal (like HTML colors). The first two "\
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"chars are for red, then green, then blue. #000000 = black, #FF0000 = red,"\
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" #00FF00 = green, #FFFF00 = yellow (red + green), #FFFFFF = white" )
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#define TITLE_TEXT N_("Title display mode")
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#define TITLE_LONGTEXT N_("Title display mode. Default is 0 (hidden) if the feed has an image and feed images are enabled, 1 otherwise.")
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#define RSS_HELP N_("Display a RSS or ATOM Feed on your video")
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enum title_modes {
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default_title=-1,
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hide_title,
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prepend_title,
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scroll_title };
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static const int pi_title_modes[] = { default_title, hide_title, prepend_title, scroll_title };
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static const char *const ppsz_title_modes[] =
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{ N_("Default"), N_("Don't show"), N_("Always visible"), N_("Scroll with feed") };
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#define CFG_PREFIX "rss-"
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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vlc_module_begin ()
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set_shortname( N_("RSS / Atom") )
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set_help(RSS_HELP)
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set_callback_sub_source( CreateFilter, 1 )
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set_subcategory( SUBCAT_VIDEO_SUBPIC )
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add_string( CFG_PREFIX "urls", NULL, MSG_TEXT, MSG_LONGTEXT )
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set_section( N_("Position"), NULL )
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add_integer( CFG_PREFIX "x", 0, POSX_TEXT, POSX_LONGTEXT )
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add_integer( CFG_PREFIX "y", 0, POSY_TEXT, POSY_LONGTEXT )
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add_integer( CFG_PREFIX "position", -1, POS_TEXT, POS_LONGTEXT )
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change_integer_list( pi_pos_values, ppsz_pos_descriptions )
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set_section( N_("Font"), NULL )
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/* 5 sets the default to top [1] left [4] */
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add_integer_with_range( CFG_PREFIX "opacity", 255, 0, 255,
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OPACITY_TEXT, OPACITY_LONGTEXT )
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add_rgb(CFG_PREFIX "color", 0xFFFFFF, COLOR_TEXT, COLOR_LONGTEXT)
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change_integer_list( pi_color_values, ppsz_color_descriptions )
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add_integer( CFG_PREFIX "size", 0, SIZE_TEXT, SIZE_LONGTEXT )
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change_integer_range( 0, 4096)
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set_section( N_("Misc"), NULL )
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add_integer( CFG_PREFIX "speed", 100000, SPEED_TEXT, SPEED_LONGTEXT )
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add_integer( CFG_PREFIX "length", 60, LENGTH_TEXT, LENGTH_LONGTEXT )
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add_integer( CFG_PREFIX "ttl", 1800, TTL_TEXT, TTL_LONGTEXT )
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add_bool( CFG_PREFIX "images", true, IMAGE_TEXT, IMAGE_LONGTEXT )
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add_integer( CFG_PREFIX "title", default_title, TITLE_TEXT, TITLE_LONGTEXT )
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change_integer_list( pi_title_modes, ppsz_title_modes )
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set_description( N_("RSS and Atom feed display") )
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add_shortcut( "rss", "atom" )
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vlc_module_end ()
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static const char *const ppsz_filter_options[] = {
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"urls", "x", "y", "position", "opacity", "color", "size", "speed", "length",
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"ttl", "images", "title", NULL
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};
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static void InitCurrentContext(filter_sys_t *p_sys)
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{
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p_sys->i_cur_feed = 0;
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p_sys->i_cur_item = p_sys->i_title == scroll_title ? -1 : 0;
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/* Set current char to -1 such that it is increased to 0 in the first run
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* for displaying text */
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p_sys->i_cur_char = -1;
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}
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static const struct vlc_filter_operations filter_ops = {
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.source_sub = Filter, .close = DestroyFilter,
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};
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/*****************************************************************************
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* CreateFilter: allocates RSS video filter
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*****************************************************************************/
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static int CreateFilter( filter_t *p_filter )
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{
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filter_sys_t *p_sys;
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char *psz_urls;
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int i_ttl;
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/* Allocate structure */
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p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
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if( p_sys == NULL )
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return VLC_ENOMEM;
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config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
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p_filter->p_cfg );
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/* Get the urls to parse: must be non empty */
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psz_urls = var_CreateGetNonEmptyString( p_filter, CFG_PREFIX "urls" );
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if( !psz_urls )
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{
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msg_Err( p_filter, "The list of urls must not be empty" );
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free( p_sys );
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return VLC_EGENERIC;
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}
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/* Fill the p_sys structure with the configuration */
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p_sys->i_title = var_CreateGetInteger( p_filter, CFG_PREFIX "title" );
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InitCurrentContext(p_sys);
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p_sys->i_feeds = 0;
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p_sys->p_feeds = NULL;
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p_sys->i_speed = VLC_TICK_FROM_US( var_CreateGetInteger( p_filter, CFG_PREFIX "speed" ) );
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p_sys->i_length = var_CreateGetInteger( p_filter, CFG_PREFIX "length" );
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p_sys->b_images = var_CreateGetBool( p_filter, CFG_PREFIX "images" );
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i_ttl = __MAX( 0, var_CreateGetInteger( p_filter, CFG_PREFIX "ttl" ) );
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p_sys->psz_marquee = malloc( p_sys->i_length + 1 );
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if( p_sys->psz_marquee == NULL )
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{
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free( psz_urls );
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free( p_sys );
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return VLC_ENOMEM;
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}
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p_sys->psz_marquee[p_sys->i_length] = '\0';
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p_sys->p_style = text_style_Create( STYLE_NO_DEFAULTS );
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if( p_sys->p_style == NULL )
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goto error;
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p_sys->i_xoff = var_CreateGetInteger( p_filter, CFG_PREFIX "x" );
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p_sys->i_yoff = var_CreateGetInteger( p_filter, CFG_PREFIX "y" );
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p_sys->i_pos = var_CreateGetInteger( p_filter, CFG_PREFIX "position" );
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p_sys->p_style->i_font_alpha = var_CreateGetInteger( p_filter, CFG_PREFIX "opacity" );
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p_sys->p_style->i_font_color = var_CreateGetInteger( p_filter, CFG_PREFIX "color" );
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p_sys->p_style->i_features |= STYLE_HAS_FONT_ALPHA | STYLE_HAS_FONT_COLOR;
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p_sys->p_style->i_font_size = var_CreateGetInteger( p_filter, CFG_PREFIX "size" );
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if( p_sys->b_images && p_sys->p_style->i_font_size == -1 )
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{
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msg_Warn( p_filter, "rss-size wasn't specified. Feed images will thus "
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"be displayed without being resized" );
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}
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/* Parse the urls */
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if( ParseUrls( p_filter, psz_urls ) )
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goto error;
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/* Misc init */
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vlc_mutex_init( &p_sys->lock );
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p_filter->ops = &filter_ops;
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p_sys->last_date = (vlc_tick_t)0;
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p_sys->b_fetched = false;
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/* Create and arm the timer */
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if( vlc_timer_create( &p_sys->timer, Fetch, p_filter ) )
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goto error;
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vlc_timer_schedule_asap( p_sys->timer, vlc_tick_from_sec(i_ttl) );
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free( psz_urls );
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return VLC_SUCCESS;
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error:
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if( p_sys->p_style )
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text_style_Delete( p_sys->p_style );
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free( p_sys->psz_marquee );
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free( psz_urls );
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free( p_sys );
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return VLC_ENOMEM;
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}
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/*****************************************************************************
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* DestroyFilter: destroy RSS video filter
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*****************************************************************************/
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static void DestroyFilter( filter_t *p_filter )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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vlc_timer_destroy( p_sys->timer );
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text_style_Delete( p_sys->p_style );
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free( p_sys->psz_marquee );
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FreeRSS( p_sys->p_feeds, p_sys->i_feeds );
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free( p_sys );
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}
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static void switchToNextFeed(filter_sys_t *p_sys)
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{
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p_sys->i_cur_feed = (p_sys->i_cur_feed + 1)%p_sys->i_feeds;
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}
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/****************************************************************************
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* Filter: the whole thing
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****************************************************************************
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* This function outputs subpictures at regular time intervals.
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****************************************************************************/
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static subpicture_t *Filter( filter_t *p_filter, vlc_tick_t date )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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subpicture_t *p_spu;
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subpicture_region_t *p_region;
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int i_item;
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rss_feed_t *p_feed;
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vlc_mutex_lock( &p_sys->lock );
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/* Check if the feeds have been fetched and that we have some feeds */
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if( !p_sys->b_fetched && p_sys->i_feeds > 0 )
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{
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vlc_mutex_unlock( &p_sys->lock );
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return NULL;
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}
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/* If the current feed has no item then switch to the next feed
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and skip further processing */
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if (p_sys->p_feeds[p_sys->i_cur_feed].i_items == 0)
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{
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switchToNextFeed(p_sys);
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vlc_mutex_unlock( &p_sys->lock );
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return NULL;
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}
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if( p_sys->last_date
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+ ( p_sys->i_cur_char <= 0 &&
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p_sys->i_cur_item == ( p_sys->i_title == scroll_title ? -1 : 0 ) ? 5 : 1 )
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/* ( ... ? 5 : 1 ) means "wait 5 times more for the 1st char" */
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* p_sys->i_speed > date )
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{
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vlc_mutex_unlock( &p_sys->lock );
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return NULL;
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}
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p_sys->last_date = date;
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p_sys->i_cur_char++;
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if( p_sys->i_cur_item == -1 ?
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p_sys->p_feeds[p_sys->i_cur_feed].psz_title[p_sys->i_cur_char] == 0 :
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p_sys->p_feeds[p_sys->i_cur_feed].p_items[p_sys->i_cur_item].psz_title[p_sys->i_cur_char] == 0 )
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{
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p_sys->i_cur_char = 0;
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p_sys->i_cur_item++;
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if( p_sys->i_cur_item >= p_sys->p_feeds[p_sys->i_cur_feed].i_items )
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{
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if( p_sys->i_title == scroll_title )
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p_sys->i_cur_item = -1;
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else
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p_sys->i_cur_item = 0;
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switchToNextFeed(p_sys);
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}
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}
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p_spu = filter_NewSubpicture( p_filter );
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if( !p_spu )
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{
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vlc_mutex_unlock( &p_sys->lock );
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return NULL;
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}
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subpicture_region_t *region = subpicture_region_NewText();
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if( !region )
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{
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subpicture_Delete( p_spu );
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vlc_mutex_unlock( &p_sys->lock );
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return NULL;
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}
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vlc_spu_regions_push( &p_spu->regions, region );
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/* Generate the string that will be displayed. This string is supposed to
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be p_sys->i_length characters long. */
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i_item = p_sys->i_cur_item;
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p_feed = &p_sys->p_feeds[p_sys->i_cur_feed];
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char *feed_title = p_feed->psz_title;
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char *item_title = p_feed->p_items[i_item].psz_title;
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if( ( p_feed->p_pic && p_sys->i_title == default_title )
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|| p_sys->i_title == hide_title )
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{
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/* Don't display the feed's title if we have an image */
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snprintf( p_sys->psz_marquee, p_sys->i_length, "%s",
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item_title + p_sys->i_cur_char );
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}
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else if( ( !p_feed->p_pic && p_sys->i_title == default_title )
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|| p_sys->i_title == prepend_title )
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{
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snprintf( p_sys->psz_marquee, p_sys->i_length, "%s : %s",
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feed_title,
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item_title + p_sys->i_cur_char );
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}
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else /* scrolling title */
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{
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if( i_item == -1 )
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{
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snprintf( p_sys->psz_marquee, p_sys->i_length, "%s : %s",
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feed_title + p_sys->i_cur_char,
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p_feed->p_items[i_item+1].psz_title );
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// Set i_item to 0 as the first item title was already printed.
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i_item = 0;
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}
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else
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snprintf( p_sys->psz_marquee, p_sys->i_length, "%s",
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item_title + p_sys->i_cur_char );
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}
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while( strlen( p_sys->psz_marquee ) < (unsigned int)p_sys->i_length )
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{
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i_item++;
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if( i_item == p_feed->i_items ) break;
|
|
snprintf( strchr( p_sys->psz_marquee, 0 ),
|
|
p_sys->i_length - strlen( p_sys->psz_marquee ),
|
|
" - %s",
|
|
p_feed->p_items[i_item].psz_title );
|
|
}
|
|
|
|
/* Calls to snprintf might split multibyte UTF8 chars ...
|
|
* which freetype doesn't like. */
|
|
{
|
|
char *a = strdup( p_sys->psz_marquee );
|
|
char *a2 = a;
|
|
char *b = p_sys->psz_marquee;
|
|
EnsureUTF8( p_sys->psz_marquee );
|
|
/* we want to use ' ' instead of '?' for erroneous chars */
|
|
while( *b != '\0' )
|
|
{
|
|
if( *b != *a ) *b = ' ';
|
|
b++;a++;
|
|
}
|
|
free( a2 );
|
|
}
|
|
|
|
region->p_text = text_segment_New(p_sys->psz_marquee);
|
|
if( p_sys->p_style->i_font_size > 0 )
|
|
region->fmt.i_visible_height = p_sys->p_style->i_font_size;
|
|
p_spu->i_start = date;
|
|
p_spu->i_stop = 0;
|
|
p_spu->b_ephemer = true;
|
|
|
|
/* where to locate the string: */
|
|
if( p_sys->i_pos < 0 )
|
|
{ /* set to an absolute xy */
|
|
region->i_align = SUBPICTURE_ALIGN_LEFT | SUBPICTURE_ALIGN_TOP;
|
|
region->b_absolute = true;
|
|
}
|
|
else
|
|
{ /* set to one of the 9 relative locations */
|
|
region->i_align = p_sys->i_pos;
|
|
region->b_absolute = false;
|
|
}
|
|
region->i_x = p_sys->i_xoff;
|
|
region->i_y = p_sys->i_yoff;
|
|
|
|
region->p_text->style = text_style_Duplicate( p_sys->p_style );
|
|
|
|
if( p_feed->p_pic )
|
|
{
|
|
/* Display the feed's image */
|
|
picture_t *p_pic = p_feed->p_pic;
|
|
|
|
p_region = subpicture_region_ForPicture( NULL, p_pic );
|
|
if( !p_region )
|
|
{
|
|
msg_Err( p_filter, "cannot allocate SPU region" );
|
|
}
|
|
else
|
|
{
|
|
p_region->i_x = region->i_x;
|
|
p_region->i_y = region->i_y;
|
|
vlc_spu_regions_push( &p_spu->regions, p_region );
|
|
|
|
/* Offset text to display right next to the image */
|
|
region->i_x += p_pic->format.i_visible_width;
|
|
}
|
|
}
|
|
|
|
vlc_mutex_unlock( &p_sys->lock );
|
|
return p_spu;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* RSS related functions
|
|
****************************************************************************
|
|
* You should always lock the p_filter mutex before using any of these
|
|
* functions
|
|
***************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* download and resize image located at psz_url
|
|
***************************************************************************/
|
|
static picture_t *LoadPicture( filter_t *p_filter, const char *psz_url )
|
|
{
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
video_format_t fmt_out;
|
|
picture_t *p_orig;
|
|
picture_t *p_pic = NULL;
|
|
image_handler_t *p_handler = image_HandlerCreate( p_filter );
|
|
|
|
video_format_Init( &fmt_out, VLC_CODEC_YUVA );
|
|
|
|
p_orig = image_ReadUrl( p_handler, psz_url, &fmt_out );
|
|
|
|
if( !p_orig )
|
|
{
|
|
msg_Warn( p_filter, "Unable to read image %s", psz_url );
|
|
}
|
|
else if( p_sys->p_style->i_font_size > 0 )
|
|
{
|
|
video_format_t fmt_in;
|
|
video_format_Copy( &fmt_in, &fmt_out );
|
|
|
|
fmt_in.i_height = p_orig->p[Y_PLANE].i_visible_lines;
|
|
fmt_in.i_width = p_orig->p[Y_PLANE].i_visible_pitch;
|
|
fmt_out.i_width = p_orig->p[Y_PLANE].i_visible_pitch
|
|
*p_sys->p_style->i_font_size/p_orig->p[Y_PLANE].i_visible_lines;
|
|
fmt_out.i_height = p_sys->p_style->i_font_size;
|
|
|
|
p_pic = image_Convert( p_handler, p_orig, &fmt_in, &fmt_out );
|
|
picture_Release( p_orig );
|
|
video_format_Clean( &fmt_in );
|
|
if( !p_pic )
|
|
{
|
|
msg_Warn( p_filter, "Error while converting %s", psz_url );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
p_pic = p_orig;
|
|
}
|
|
|
|
video_format_Clean( &fmt_out );
|
|
image_HandlerDelete( p_handler );
|
|
|
|
return p_pic;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* remove all ' ' '\t' '\n' '\r' characters from the beginning and end of the
|
|
* string.
|
|
***************************************************************************/
|
|
static char *removeWhiteChars( const char *psz_src )
|
|
{
|
|
char *psz_src2,*psz_clean, *psz_clean2;
|
|
psz_src2 = psz_clean = strdup( psz_src );
|
|
int i;
|
|
|
|
while( ( *psz_clean == ' ' || *psz_clean == '\t'
|
|
|| *psz_clean == '\n' || *psz_clean == '\r' )
|
|
&& *psz_clean != '\0' )
|
|
{
|
|
psz_clean++;
|
|
}
|
|
i = strlen( psz_clean );
|
|
while( --i > 0 &&
|
|
( psz_clean[i] == ' ' || psz_clean[i] == '\t'
|
|
|| psz_clean[i] == '\n' || psz_clean[i] == '\r' ) );
|
|
psz_clean[i+1] = '\0';
|
|
psz_clean2 = strdup( psz_clean );
|
|
free( psz_src2 );
|
|
return psz_clean2;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* Parse url list, psz_urls must be non empty (ensured by check in CreateFilter() )
|
|
***************************************************************************/
|
|
static int ParseUrls( filter_t *p_filter, char *psz_urls )
|
|
{
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
char *psz_urls2 = psz_urls;
|
|
|
|
p_sys->i_feeds = 1;
|
|
|
|
/* Count the number of feeds */
|
|
while( *psz_urls )
|
|
{
|
|
if( *psz_urls == '|' )
|
|
p_sys->i_feeds++;
|
|
psz_urls++;
|
|
}
|
|
|
|
/* Allocate the structure */
|
|
p_sys->p_feeds = vlc_alloc( p_sys->i_feeds, sizeof( rss_feed_t ) );
|
|
if( !p_sys->p_feeds )
|
|
return VLC_ENOMEM;
|
|
|
|
/* Loop on all urls and fill in the struct */
|
|
psz_urls = psz_urls2;
|
|
for( int i = 0; i < p_sys->i_feeds; i++ )
|
|
{
|
|
rss_feed_t* p_feed = p_sys->p_feeds + i;
|
|
char *psz_end;
|
|
|
|
if( i < p_sys->i_feeds - 1 )
|
|
{
|
|
psz_end = strchr( psz_urls, '|' );
|
|
*psz_end = '\0';
|
|
}
|
|
else
|
|
psz_end = psz_urls;
|
|
|
|
p_feed->i_items = 0;
|
|
p_feed->p_items = NULL;
|
|
p_feed->psz_title = (char *)s_init_title;
|
|
p_feed->psz_link = NULL;
|
|
p_feed->psz_description = NULL;
|
|
p_feed->psz_image = NULL;
|
|
p_feed->p_pic = NULL;
|
|
p_feed->psz_url = strdup( psz_urls );
|
|
|
|
psz_urls = psz_end + 1;
|
|
}
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
* Parse the rss feed
|
|
***************************************************************************/
|
|
static bool ParseFeed( filter_t *p_filter, xml_reader_t *p_xml_reader,
|
|
rss_feed_t *p_feed )
|
|
{
|
|
VLC_UNUSED(p_filter);
|
|
const char *node;
|
|
char *psz_eltname = NULL;
|
|
|
|
bool b_is_item = false;
|
|
bool b_is_image = false;
|
|
|
|
int i_item = 0;
|
|
int type;
|
|
|
|
while( (type = xml_ReaderNextNode( p_xml_reader, &node )) > 0 )
|
|
{
|
|
switch( type )
|
|
{
|
|
case XML_READER_STARTELEM:
|
|
#ifdef RSS_DEBUG
|
|
msg_Dbg( p_filter, "element <%s>", node );
|
|
#endif
|
|
free(psz_eltname);
|
|
psz_eltname = strdup( node );
|
|
if( unlikely(!psz_eltname) )
|
|
goto end;
|
|
|
|
/* rss or atom */
|
|
if( !strcmp( node, "item" ) || !strcmp( node, "entry" ) )
|
|
{
|
|
b_is_item = true;
|
|
p_feed->i_items++;
|
|
p_feed->p_items = xrealloc( p_feed->p_items,
|
|
p_feed->i_items * sizeof( rss_item_t ) );
|
|
p_feed->p_items[p_feed->i_items-1].psz_title = (char *)s_init_title;
|
|
p_feed->p_items[p_feed->i_items-1].psz_description = NULL;
|
|
p_feed->p_items[p_feed->i_items-1].psz_link = NULL;
|
|
}
|
|
/* rss */
|
|
else if( !strcmp( node, "image" ) )
|
|
{
|
|
b_is_image = true;
|
|
}
|
|
/* atom */
|
|
else if( !strcmp( node, "link" ) )
|
|
{
|
|
const char *name, *value;
|
|
char *psz_href = NULL;
|
|
char *psz_rel = NULL;
|
|
|
|
while( (name = xml_ReaderNextAttr( p_xml_reader, &value )) != NULL )
|
|
{
|
|
if( !strcmp( name, "rel" ) )
|
|
{
|
|
free( psz_rel );
|
|
psz_rel = strdup( value );
|
|
}
|
|
else if( !strcmp( name, "href" ) )
|
|
{
|
|
free( psz_href );
|
|
psz_href = strdup( value );
|
|
}
|
|
}
|
|
|
|
/* "rel" and "href" must be defined */
|
|
if( psz_rel && psz_href )
|
|
{
|
|
if( !strcmp( psz_rel, "alternate" ) && !b_is_item &&
|
|
!b_is_image && !p_feed->psz_link )
|
|
{
|
|
p_feed->psz_link = psz_href;
|
|
}
|
|
/* this isn't in the rfc but i found some ... */
|
|
else if( ( !strcmp( psz_rel, "logo" ) ||
|
|
!strcmp( psz_rel, "icon" ) )
|
|
&& !b_is_item && !b_is_image
|
|
&& !p_feed->psz_image )
|
|
{
|
|
p_feed->psz_image = psz_href;
|
|
}
|
|
else
|
|
{
|
|
free( psz_href );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
free( psz_href );
|
|
}
|
|
free( psz_rel );
|
|
}
|
|
break;
|
|
|
|
case XML_READER_ENDELEM:
|
|
FREENULL( psz_eltname );
|
|
#ifdef RSS_DEBUG
|
|
msg_Dbg( p_filter, "element end </%s>", node );
|
|
#endif
|
|
/* rss or atom */
|
|
if( !strcmp( node, "item" ) || !strcmp( node, "entry" ) )
|
|
{
|
|
b_is_item = false;
|
|
i_item++;
|
|
}
|
|
/* rss */
|
|
else if( !strcmp( node, "image" ) )
|
|
{
|
|
b_is_image = false;
|
|
}
|
|
break;
|
|
|
|
case XML_READER_TEXT:
|
|
{
|
|
if( !psz_eltname )
|
|
break;
|
|
|
|
char *psz_eltvalue = removeWhiteChars( node );
|
|
|
|
#ifdef RSS_DEBUG
|
|
msg_Dbg( p_filter, " text : \"%s\"", psz_eltvalue );
|
|
#endif
|
|
/* Is it an item ? */
|
|
if( b_is_item )
|
|
{
|
|
rss_item_t *p_item = p_feed->p_items+i_item;
|
|
/* rss/atom */
|
|
if( !strcmp( psz_eltname, "title" ) && p_item->psz_title == s_init_title )
|
|
{
|
|
p_item->psz_title = psz_eltvalue;
|
|
}
|
|
else if( !strcmp( psz_eltname, "link" ) /* rss */
|
|
&& !p_item->psz_link )
|
|
{
|
|
p_item->psz_link = psz_eltvalue;
|
|
}
|
|
/* rss/atom */
|
|
else if( ( !strcmp( psz_eltname, "description" ) ||
|
|
!strcmp( psz_eltname, "summary" ) )
|
|
&& !p_item->psz_description )
|
|
{
|
|
p_item->psz_description = psz_eltvalue;
|
|
}
|
|
else
|
|
{
|
|
free( psz_eltvalue );
|
|
}
|
|
}
|
|
/* Is it an image ? */
|
|
else if( b_is_image )
|
|
{
|
|
if( !strcmp( psz_eltname, "url" ) && !p_feed->psz_image )
|
|
p_feed->psz_image = psz_eltvalue;
|
|
else
|
|
free( psz_eltvalue );
|
|
}
|
|
else
|
|
{
|
|
/* rss/atom */
|
|
if( !strcmp( psz_eltname, "title" ) && p_feed->psz_title == s_init_title )
|
|
{
|
|
p_feed->psz_title = psz_eltvalue;
|
|
}
|
|
/* rss */
|
|
else if( !strcmp( psz_eltname, "link" ) && !p_feed->psz_link )
|
|
{
|
|
p_feed->psz_link = psz_eltvalue;
|
|
}
|
|
/* rss ad atom */
|
|
else if( ( !strcmp( psz_eltname, "description" ) ||
|
|
!strcmp( psz_eltname, "subtitle" ) )
|
|
&& !p_feed->psz_description )
|
|
{
|
|
p_feed->psz_description = psz_eltvalue;
|
|
}
|
|
/* rss */
|
|
else if( ( !strcmp( psz_eltname, "logo" ) ||
|
|
!strcmp( psz_eltname, "icon" ) )
|
|
&& !p_feed->psz_image )
|
|
{
|
|
p_feed->psz_image = psz_eltvalue;
|
|
}
|
|
else
|
|
{
|
|
free( psz_eltvalue );
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
free( psz_eltname );
|
|
return true;
|
|
|
|
end:
|
|
return false;
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* FetchRSS (or Atom) feeds
|
|
***************************************************************************/
|
|
static rss_feed_t* FetchRSS( filter_t *p_filter )
|
|
{
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
|
|
stream_t *p_stream;
|
|
xml_reader_t *p_xml_reader;
|
|
int i_feed;
|
|
|
|
/* These data are not modified after the creation of the module so we don't
|
|
need to hold the lock */
|
|
int i_feeds = p_sys->i_feeds;
|
|
bool b_images = p_sys->b_images;
|
|
|
|
/* Allocate a new structure */
|
|
rss_feed_t *p_feeds = vlc_alloc( i_feeds, sizeof( rss_feed_t ) );
|
|
if( !p_feeds )
|
|
return NULL;
|
|
|
|
/* Fetch all feeds and parse them */
|
|
for( i_feed = 0; i_feed < i_feeds; i_feed++ )
|
|
{
|
|
rss_feed_t *p_feed = p_feeds + i_feed;
|
|
rss_feed_t *p_old_feed = p_sys->p_feeds + i_feed;
|
|
|
|
/* Initialize the structure */
|
|
p_feed->psz_title = (char *)s_init_title;
|
|
p_feed->psz_description = NULL;
|
|
p_feed->psz_link = NULL;
|
|
p_feed->psz_image = NULL;
|
|
p_feed->p_pic = NULL;
|
|
p_feed->i_items = 0;
|
|
p_feed->p_items = NULL;
|
|
|
|
p_feed->psz_url = strdup( p_old_feed->psz_url );
|
|
|
|
/* Fetch the feed */
|
|
msg_Dbg( p_filter, "opening %s RSS/Atom feed ...", p_feed->psz_url );
|
|
|
|
p_stream = vlc_stream_NewURL( p_filter, p_feed->psz_url );
|
|
if( !p_stream )
|
|
{
|
|
msg_Err( p_filter, "Failed to open %s for reading", p_feed->psz_url );
|
|
p_xml_reader = NULL;
|
|
goto error;
|
|
}
|
|
|
|
p_xml_reader = xml_ReaderCreate( p_filter, p_stream );
|
|
if( !p_xml_reader )
|
|
{
|
|
msg_Err( p_filter, "Failed to open %s for parsing", p_feed->psz_url );
|
|
goto error;
|
|
}
|
|
|
|
/* Parse the feed */
|
|
if( !ParseFeed( p_filter, p_xml_reader, p_feed ) )
|
|
goto error;
|
|
|
|
/* If we have a image: load it if required */
|
|
if( b_images && p_feed->psz_image && !p_feed->p_pic )
|
|
{
|
|
p_feed->p_pic = LoadPicture( p_filter, p_feed->psz_image );
|
|
}
|
|
|
|
msg_Dbg( p_filter, "done with %s RSS/Atom feed", p_feed->psz_url );
|
|
xml_ReaderDelete( p_xml_reader );
|
|
vlc_stream_Delete( p_stream );
|
|
}
|
|
|
|
return p_feeds;
|
|
|
|
error:
|
|
FreeRSS( p_feeds, i_feed + 1 );
|
|
if( p_xml_reader )
|
|
xml_ReaderDelete( p_xml_reader );
|
|
if( p_stream )
|
|
vlc_stream_Delete( p_stream );
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* FreeRSS
|
|
***************************************************************************/
|
|
static void FreeRSS( rss_feed_t *p_feeds, int i_feeds )
|
|
{
|
|
for( int i_feed = 0; i_feed < i_feeds; i_feed++ )
|
|
{
|
|
rss_feed_t *p_feed = p_feeds+i_feed;
|
|
for( int i_item = 0; i_item < p_feed->i_items; i_item++ )
|
|
{
|
|
rss_item_t *p_item = p_feed->p_items+i_item;
|
|
if( p_item->psz_title != s_init_title )
|
|
free( p_item->psz_title );
|
|
free( p_item->psz_link );
|
|
free( p_item->psz_description );
|
|
}
|
|
free( p_feed->p_items );
|
|
if( p_feed->psz_title != s_init_title )
|
|
free( p_feed->psz_title );
|
|
free( p_feed->psz_link );
|
|
free( p_feed->psz_description );
|
|
free( p_feed->psz_image );
|
|
if( p_feed->p_pic != NULL )
|
|
picture_Release( p_feed->p_pic );
|
|
free( p_feed->psz_url );
|
|
}
|
|
free( p_feeds );
|
|
}
|
|
|
|
static void Fetch( void *p_data )
|
|
{
|
|
filter_t *p_filter = p_data;
|
|
filter_sys_t *p_sys = p_filter->p_sys;
|
|
|
|
msg_Dbg( p_filter, "Updating the rss feeds" );
|
|
rss_feed_t *p_feeds = FetchRSS( p_filter );
|
|
if( !p_feeds )
|
|
{
|
|
msg_Err( p_filter, "Unable to fetch the feeds" );
|
|
return;
|
|
}
|
|
|
|
rss_feed_t *p_old_feeds = p_sys->p_feeds;
|
|
|
|
vlc_mutex_lock( &p_sys->lock );
|
|
/* Update the feeds */
|
|
p_sys->p_feeds = p_feeds;
|
|
p_sys->b_fetched = true;
|
|
/* Set all current info to the original values */
|
|
InitCurrentContext(p_sys);
|
|
vlc_mutex_unlock( &p_sys->lock );
|
|
|
|
if( p_old_feeds )
|
|
FreeRSS( p_old_feeds, p_sys->i_feeds );
|
|
}
|