--- /dev/null
+/*****************************************************************************
+ * rss.c : rss feed display video plugin for vlc
+ *****************************************************************************
+ * Copyright (C) 2003-2005 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Antoine Cellerier <dionoea@videolan.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h> /* malloc(), free() */
+#include <string.h>
+
+#include <vlc/vlc.h>
+#include <vlc/vout.h>
+
+#include "vlc_filter.h"
+#include "vlc_block.h"
+#include "osd.h"
+
+#include "vlc_block.h"
+#include "vlc_stream.h"
+#include "vlc_xml.h"
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int CreateFilter ( vlc_object_t * );
+static void DestroyFilter( vlc_object_t * );
+static subpicture_t *Filter( filter_t *, mtime_t );
+
+static int FetchRSS( filter_t * );
+
+static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
+ 0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
+ 0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
+ 0x00000080, 0x000000FF, 0x0000FFFF};
+static char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
+ N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
+ N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
+ N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
+ N_("Aqua") };
+
+/*****************************************************************************
+ * filter_sys_t: rss filter descriptor
+ *****************************************************************************/
+
+struct rss_item_t
+{
+ char *psz_title;
+ char *psz_description;
+ char *psz_link;
+};
+
+struct rss_feed_t
+{
+ char *psz_title;
+ char *psz_description;
+ char *psz_link;
+
+ int i_items;
+ struct rss_item_t *p_items;
+};
+
+struct filter_sys_t
+{
+ int i_xoff, i_yoff; /* offsets for the display string in the video window */
+ int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
+ int i_speed;
+ int i_length;
+
+ char *psz_marquee; /* marquee string */
+
+ int i_font_color, i_font_opacity, i_font_size; /* font control */
+
+ mtime_t last_date;
+
+ //vlc_bool_t b_need_update;
+
+ char *psz_urls;
+ int i_feeds;
+ struct rss_feed_t *p_feeds;
+
+ int i_cur_feed;
+ int i_cur_item;
+ int i_cur_char;
+};
+
+// <TODO>
+#define MSG_TEXT N_("RSS feed URLs")
+#define MSG_LONGTEXT N_("RSS feed comma(TODO ?) seperated URLs")
+#define SPEED_TEXT N_("RSS feed speed")
+#define SPEED_LONGTEXT N_("RSS feed speed (bigger is slower)")
+#define LENGTH_TEXT N_("RSS feed max number of chars displayed")
+#define LENGTH_LONGTEXT N_("RSS feed max number of chars displayed")
+// </TODO>
+
+#define POSX_TEXT N_("X offset, from left")
+#define POSX_LONGTEXT N_("X offset, from the left screen edge" )
+#define POSY_TEXT N_("Y offset, from the top")
+#define POSY_LONGTEXT N_("Y offset, down from the top" )
+#define OPACITY_TEXT N_("Opacity")
+#define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of " \
+ "overlay text. 0 = transparent, 255 = totally opaque. " )
+#define SIZE_TEXT N_("Font size, pixels")
+#define SIZE_LONGTEXT N_("Specify the font size, in pixels, " \
+ "with -1 = use freetype-fontsize" )
+
+#define COLOR_TEXT N_("Text Default Color")
+#define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, hexadecimal. " \
+ "#000000 = all colors off, " \
+ "0xFF0000 = just Red, 0xFFFFFF = all color on [White]" )
+
+#define POS_TEXT N_("Marquee position")
+#define POS_LONGTEXT N_( \
+ "You can enforce the marquee position on the video " \
+ "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
+ "also use combinations of these values by adding them).")
+
+static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
+static char *ppsz_pos_descriptions[] =
+ { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
+ N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+vlc_module_begin();
+ set_capability( "sub filter", 0 );
+ set_shortname( N_("RSS" ));
+ set_callbacks( CreateFilter, DestroyFilter );
+ set_category( CAT_VIDEO );
+ set_subcategory( SUBCAT_VIDEO_SUBPIC );
+ add_string( "rss-urls", "rss", NULL, MSG_TEXT, MSG_LONGTEXT, VLC_FALSE );
+
+ set_section( N_("Position"), NULL );
+ add_integer( "marq-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
+ add_integer( "marq-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_FALSE );
+ add_integer( "marq-position", 5, NULL, POS_TEXT, POS_LONGTEXT, VLC_TRUE );
+
+ set_section( N_("Font"), NULL );
+ /* 5 sets the default to top [1] left [4] */
+ change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
+ add_integer_with_range( "marq-opacity", 255, 0, 255, NULL,
+ OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
+ add_integer( "marq-color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT, VLC_TRUE );
+ change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
+ add_integer( "marq-size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE );
+
+ set_section( N_("Misc"), NULL );
+ add_integer( "rss-speed", 100000, NULL, SPEED_TEXT, SPEED_LONGTEXT,
+ VLC_FALSE );
+ add_integer( "rss-length", 60, NULL, LENGTH_TEXT, LENGTH_LONGTEXT,
+ VLC_FALSE );
+
+ set_description( _("RSS feed display sub filter") );
+ add_shortcut( "rss" );
+vlc_module_end();
+
+/*****************************************************************************
+ * CreateFilter: allocates RSS video filter
+ *****************************************************************************/
+static int CreateFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys;
+ int i_feed;
+
+ /* Allocate structure */
+ p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
+ if( p_sys == NULL )
+ {
+ msg_Err( p_filter, "out of memory" );
+ return VLC_ENOMEM;
+ }
+
+ p_sys->psz_urls = var_CreateGetString( p_filter, "rss-urls" );
+ p_sys->i_cur_feed = 0;
+ p_sys->i_cur_item = 0;
+ p_sys->i_cur_char = 0;
+ p_sys->i_speed = var_CreateGetInteger( p_filter, "rss-speed" );
+ p_sys->i_length = var_CreateGetInteger( p_filter, "rss-length" );
+ p_sys->psz_marquee = (char *)malloc( p_sys->i_length );
+
+ p_sys->i_xoff = var_CreateGetInteger( p_filter, "marq-x" );
+ p_sys->i_yoff = var_CreateGetInteger( p_filter, "marq-y" );
+ p_sys->i_pos = var_CreateGetInteger( p_filter, "marq-position" );
+ var_Create( p_filter, "marq-opacity", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
+ p_sys->i_font_opacity = var_CreateGetInteger( p_filter, "marq-opacity" );
+ p_sys->i_font_color = var_CreateGetInteger( p_filter, "marq-color" );
+ p_sys->i_font_size = var_CreateGetInteger( p_filter, "marq-size" );
+
+ if( FetchRSS( p_filter ) )
+ {
+ msg_Err( p_filter, "failed while fetching RSS ... too bad" );
+ return VLC_EGENERIC;
+ }
+
+ if( p_sys->i_feeds == 0 ) return VLC_EGENERIC;
+ for( i_feed=0; i_feed < p_sys->i_feeds; i_feed ++ )
+ if( p_sys->p_feeds[i_feed].i_items == 0 )
+ return VLC_EGENERIC;
+
+ /* Misc init */
+ p_filter->pf_sub_filter = Filter;
+ p_sys->last_date = (mtime_t)0;
+ //p_sys->b_need_update = VLC_TRUE;
+
+ return VLC_SUCCESS;
+}
+/*****************************************************************************
+ * DestroyFilter: destroy RSS video filter
+ *****************************************************************************/
+static void DestroyFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys = p_filter->p_sys;
+
+ if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
+ free( p_sys->psz_urls );
+ /* TODO : free RSS feeds stuff */
+ free( p_sys );
+
+ /* Delete the RSS variables */
+ var_Destroy( p_filter, "rss-urls" );
+ var_Destroy( p_filter, "rss-speed" );
+ var_Destroy( p_filter, "rss-length" );
+ var_Destroy( p_filter, "marq-x" );
+ var_Destroy( p_filter, "marq-y" );
+ var_Destroy( p_filter, "marq-position" );
+ var_Destroy( p_filter, "marq-color");
+ var_Destroy( p_filter, "marq-opacity");
+ var_Destroy( p_filter, "marq-size");
+}
+
+/****************************************************************************
+ * Filter: the whole thing
+ ****************************************************************************
+ * This function outputs subpictures at regular time intervals.
+ ****************************************************************************/
+static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
+{
+ filter_sys_t *p_sys = p_filter->p_sys;
+ subpicture_t *p_spu;
+ video_format_t fmt;
+
+ int i_feed, i_item;
+
+ /* wait more for the 1st char */
+ if( p_sys->last_date + ( p_sys->i_cur_char == 0 && p_sys->i_cur_item == 0 ? 5 : 1 ) * p_sys->i_speed > date ) return NULL;
+
+ p_sys->last_date = date;
+ p_sys->i_cur_char++;
+ if( p_sys->p_feeds[p_sys->i_cur_feed].p_items[p_sys->i_cur_item].psz_title[p_sys->i_cur_char] == 0 )
+ {
+ p_sys->i_cur_char = 0;
+ p_sys->i_cur_item++;
+ if( p_sys->i_cur_item >= p_sys->p_feeds[p_sys->i_cur_feed].i_items )
+ {
+ p_sys->i_cur_item = 0;
+ p_sys->i_cur_feed = (p_sys->i_cur_feed + 1)%p_sys->i_feeds;
+ }
+ }
+
+
+/* We always need an update
+ if( p_sys->b_need_update == VLC_FALSE )
+ {
+ return NULL;
+ }*/
+
+ p_spu = p_filter->pf_sub_buffer_new( p_filter );
+ if( !p_spu ) return NULL;
+
+ memset( &fmt, 0, sizeof(video_format_t) );
+ fmt.i_chroma = VLC_FOURCC('T','E','X','T');
+ fmt.i_aspect = 0;
+ fmt.i_width = 0;
+ fmt.i_height = 0;
+ fmt.i_x_offset = 0;
+ fmt.i_y_offset = 0;
+ p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
+ if( !p_spu->p_region )
+ {
+ p_filter->pf_sub_buffer_del( p_filter, p_spu );
+ return NULL;
+ }
+
+ i_item = p_sys->i_cur_item;
+ i_feed = p_sys->i_cur_feed;
+ snprintf( p_sys->psz_marquee, p_sys->i_length, "%s : %s", p_sys->p_feeds[i_feed].psz_title, p_sys->p_feeds[i_feed].p_items[i_item].psz_title+p_sys->i_cur_char );
+ while( strlen( p_sys->psz_marquee ) < (unsigned int)p_sys->i_length )
+ {
+ i_item++;
+ if( i_item == p_sys->p_feeds[i_feed].i_items ) break;
+ snprintf( strchr( p_sys->psz_marquee, 0 ), p_sys->i_length - strlen( p_sys->psz_marquee ), " - %s", p_sys->p_feeds[i_feed].p_items[i_item].psz_title );
+ }
+
+ p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
+ p_spu->i_start = date;
+ p_spu->i_stop = 0;
+ p_spu->b_ephemer = VLC_TRUE;
+
+ /* where to locate the string: */
+ if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
+ { /* set to one of the 9 relative locations */
+ p_spu->i_flags = p_sys->i_pos;
+ p_spu->i_x = 0;
+ p_spu->i_y = 0;
+ p_spu->b_absolute = VLC_FALSE;
+ }
+ else
+ { /* set to an absolute xy, referenced to upper left corner */
+ p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
+ p_spu->i_x = p_sys->i_xoff;
+ p_spu->i_y = p_sys->i_yoff;
+ p_spu->b_absolute = VLC_TRUE;
+ }
+ p_spu->i_height = 1;
+ p_spu->p_region->i_text_color = p_sys->i_font_color;
+ p_spu->p_region->i_text_alpha = 255 - p_sys->i_font_opacity;
+ p_spu->p_region->i_text_size = p_sys->i_font_size;
+
+
+ //p_sys->b_need_update = VLC_FALSE;
+ return p_spu;
+}
+
+static int FetchRSS( filter_t *p_filter)
+{
+ filter_sys_t *p_sys = p_filter->p_sys;
+
+ stream_t *p_stream = NULL;
+ xml_t *p_xml = NULL;
+ xml_reader_t *p_xml_reader = NULL;
+
+ char *psz_eltname = NULL;
+ char *psz_eltvalue = NULL;
+ char *psz_feed = NULL;
+ char *psz_buffer = NULL;
+
+ int i_feed;
+ int i_item;
+ int i_is_item;
+ int i_int;
+
+ p_sys->i_feeds = 1;
+ i_int = 0;
+ while( p_sys->psz_urls[i_int] != 0 )
+ if( p_sys->psz_urls[i_int++] == ',' )
+ p_sys->i_feeds++;
+ p_sys->p_feeds = (struct rss_feed_t *)malloc( p_sys->i_feeds
+ * sizeof( struct rss_feed_t ) );
+
+ p_xml = xml_Create( p_filter );
+ if( !p_xml )
+ {
+ msg_Err( p_filter, "Failed to open XML parser" );
+ return 1;
+ }
+
+ psz_buffer = strdup( p_sys->psz_urls );
+ for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
+ {
+ struct rss_feed_t *p_feed = p_sys->p_feeds+i_feed;
+
+ if( psz_buffer == NULL ) break;
+ if( psz_buffer[0] == 0 ) psz_buffer++;
+ psz_feed = psz_buffer;
+ psz_buffer = strchr( psz_buffer, ',' );
+ if( psz_buffer != NULL ) psz_buffer[0] = 0;
+
+ p_feed->psz_title = NULL;
+ p_feed->psz_description = NULL;
+ p_feed->psz_link = NULL;
+ p_feed->i_items = 0;
+ p_feed->p_items = NULL;
+
+ msg_Dbg( p_filter, "Opening %s RSS feed ...", psz_feed );
+
+ p_stream = stream_UrlNew( p_filter, psz_feed );
+ if( !p_stream )
+ {
+ msg_Err( p_filter, "Failed to open %s for reading", psz_feed );
+ return 1;
+ }
+
+ p_xml_reader = xml_ReaderCreate( p_xml, p_stream );
+ if( !p_xml_reader )
+ {
+ msg_Err( p_filter, "Failed to open %s for parsing", psz_feed );
+ return 1;
+ }
+
+ i_item = 0;
+ i_is_item = VLC_FALSE;
+
+ while( xml_ReaderRead( p_xml_reader ) == 1 )
+ {
+ switch( xml_ReaderNodeType( p_xml_reader ) )
+ {
+ // Error
+ case -1:
+ return 1;
+
+ case XML_READER_STARTELEM:
+ if( psz_eltname ) free( psz_eltname );
+ psz_eltname = xml_ReaderName( p_xml_reader );
+ if( !psz_eltname )
+ {
+ return 1;
+ }
+ msg_Dbg( p_filter, "element name : %s", psz_eltname );
+ if( !strcmp( psz_eltname, "item" ) )
+ {
+ i_is_item = VLC_TRUE;
+ p_feed->i_items++;
+ p_feed->p_items = (struct rss_item_t *)realloc( p_feed->p_items, p_feed->i_items * sizeof( struct rss_item_t ) );
+ }
+ break;
+
+ case XML_READER_ENDELEM:
+ if( psz_eltname ) free( psz_eltname );
+ psz_eltname = xml_ReaderName( p_xml_reader );
+ if( !psz_eltname )
+ {
+ return 1;
+ }
+ msg_Dbg( p_filter, "element end : %s", psz_eltname );
+ if( !strcmp( psz_eltname, "item" ) )
+ {
+ i_is_item = VLC_FALSE;
+ i_item++;
+ }
+ free( psz_eltname ); psz_eltname = NULL;
+ break;
+
+ case XML_READER_TEXT:
+ psz_eltvalue = xml_ReaderValue( p_xml_reader );
+ if( !psz_eltvalue )
+ {
+ return 1;
+ }
+ msg_Dbg( p_filter, " text : %s", psz_eltvalue );
+ if( i_is_item == VLC_FALSE )
+ {
+ if( !strcmp( psz_eltname, "title" ) )
+ {
+ p_feed->psz_title = psz_eltvalue;
+ }
+ else if( !strcmp( psz_eltname, "link" ) )
+ {
+ p_feed->psz_link = psz_eltvalue;
+ }
+ else if( !strcmp( psz_eltname, "description" ) )
+ {
+ p_feed->psz_description = psz_eltvalue;
+ }
+ else
+ {
+ free( psz_eltvalue );
+ }
+ }
+ else
+ {
+ struct rss_item_t *p_item;
+ p_item = p_feed->p_items+i_item;
+ if( !strcmp( psz_eltname, "title" ) )
+ {
+ p_item->psz_title = psz_eltvalue;
+ }
+ else if( !strcmp( psz_eltname, "link" ) )
+ {
+ p_item->psz_link = psz_eltvalue;
+ }
+ else if( !strcmp( psz_eltname, "description" ) )
+ {
+ p_item->psz_description = psz_eltvalue;
+ }
+ else
+ {
+ free( psz_eltvalue );
+ }
+ }
+ break;
+ }
+ }
+
+ if( p_xml_reader && p_xml ) xml_ReaderDelete( p_xml, p_xml_reader );
+ if( p_stream ) stream_Delete( p_stream );
+ }
+ if( p_xml ) xml_Delete( p_xml );
+
+ return 0;
+}
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