git.sesse.net Git - vlc/blob - modules/video_filter/rss.c

   1 /*****************************************************************************
   2  * rss.c : rss feed display video plugin for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2003-2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <string.h>
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc/vout.h>
  32
  33 #include "vlc_filter.h"
  34 #include "vlc_block.h"
  35 #include "vlc_osd.h"
  36
  37 #include "vlc_block.h"
  38 #include "vlc_stream.h"
  39 #include "vlc_xml.h"
  40 #include "charset.h"
  41
  42 #include "vlc_image.h"
  43
  44 /*****************************************************************************
  45  * Local prototypes
  46  *****************************************************************************/
  47 static int  CreateFilter ( vlc_object_t * );
  48 static void DestroyFilter( vlc_object_t * );
  49 static subpicture_t *Filter( filter_t *, mtime_t );
  50
  51 static int FetchRSS( filter_t * );
  52 static void FreeRSS( filter_t * );
  53
  54 static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
  55                0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
  56                0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
  57                0x00000080, 0x000000FF, 0x0000FFFF};
  58 static char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
  59                N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
  60                N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
  61                N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
  62                N_("Aqua") };
  63
  64 /*****************************************************************************
  65  * filter_sys_t: rss filter descriptor
  66  *****************************************************************************/
  67
  68 struct rss_item_t
  69 {
  70     char *psz_title;
  71     char *psz_description;
  72     char *psz_link;
  73 };
  74
  75 struct rss_feed_t
  76 {
  77     char *psz_title;
  78     char *psz_description;
  79     char *psz_link;
  80     char *psz_image;
  81     picture_t *p_pic;
  82
  83     int i_items;
  84     struct rss_item_t *p_items;
  85 };
  86
  87 struct filter_sys_t
  88 {
  89     vlc_mutex_t lock;
  90     vlc_mutex_t *p_lock;
  91
  92     int i_xoff, i_yoff;  /* offsets for the display string in the video window */
  93     int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
  94     int i_speed;
  95     int i_length;
  96
  97     char *psz_marquee;    /* marquee string */
  98
  99     text_style_t *p_style; /* font control */
 100
 101     mtime_t last_date;
 102
 103     char *psz_urls;
 104     int i_feeds;
 105     struct rss_feed_t *p_feeds;
 106
 107     int i_ttl;
 108     time_t t_last_update;
 109     vlc_bool_t b_images;
 110
 111     int i_cur_feed;
 112     int i_cur_item;
 113     int i_cur_char;
 114 };
 115
 116 #define MSG_TEXT N_("RSS feed URLs")
 117 #define MSG_LONGTEXT N_("RSS feed '|' (pipe) seperated URLs")
 118 #define SPEED_TEXT N_("RSS feed speed")
 119 #define SPEED_LONGTEXT N_("RSS feed speed (bigger is slower)")
 120 #define LENGTH_TEXT N_("RSS feed max number of chars displayed")
 121 #define LENGTH_LONGTEXT N_("RSS feed max number of chars displayed")
 122 #define TTL_TEXT N_("Number of seconds between each forced refresh of the feeds")
 123 #define TTL_LONGTEXT N_("Number of seconds between each forced refresh of the feeds. If 0, the feeds will never be updated.")
 124 #define IMAGE_TEXT N_("Display feed images if available")
 125 #define IMAGE_LONGTEXT N_("Display feed images if available")
 126
 127 #define POSX_TEXT N_("X offset, from left")
 128 #define POSX_LONGTEXT N_("X offset, from the left screen edge" )
 129 #define POSY_TEXT N_("Y offset, from the top")
 130 #define POSY_LONGTEXT N_("Y offset, down from the top" )
 131 #define OPACITY_TEXT N_("Opacity")
 132 #define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of " \
 133     "overlay text. 0 = transparent, 255 = totally opaque. " )
 134 #define SIZE_TEXT N_("Font size, pixels")
 135 #define SIZE_LONGTEXT N_("Specify the font size, in pixels, " \
 136     "with -1 = use freetype-fontsize" )
 137
 138 #define COLOR_TEXT N_("Text Default Color")
 139 #define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, hexadecimal. " \
 140     "#000000 = all colors off, " \
 141     "0xFF0000 = just Red, 0xFFFFFF = all color on [White]" )
 142
 143 #define POS_TEXT N_("Marquee position")
 144 #define POS_LONGTEXT N_( \
 145   "You can enforce the marquee position on the video " \
 146   "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
 147   "also use combinations of these values by adding them).")
 148
 149 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
 150 static char *ppsz_pos_descriptions[] =
 151      { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
 152      N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
 153
 154 /*****************************************************************************
 155  * Module descriptor
 156  *****************************************************************************/
 157 vlc_module_begin();
 158     set_capability( "sub filter", 0 );
 159     set_shortname( "RSS" );
 160     set_callbacks( CreateFilter, DestroyFilter );
 161     set_category( CAT_VIDEO );
 162     set_subcategory( SUBCAT_VIDEO_SUBPIC );
 163     add_string( "rss-urls", "rss", NULL, MSG_TEXT, MSG_LONGTEXT, VLC_FALSE );
 164
 165     set_section( N_("Position"), NULL );
 166     add_integer( "rss-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_TRUE );
 167     add_integer( "rss-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_TRUE );
 168     add_integer( "rss-position", 5, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
 169         change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
 170
 171     set_section( N_("Font"), NULL );
 172     /* 5 sets the default to top [1] left [4] */
 173     add_integer_with_range( "rss-opacity", 255, 0, 255, NULL,
 174         OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
 175     add_integer( "rss-color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT,
 176                   VLC_FALSE );
 177         change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
 178     add_integer( "rss-size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE );
 179
 180     set_section( N_("Misc"), NULL );
 181     add_integer( "rss-speed", 100000, NULL, SPEED_TEXT, SPEED_LONGTEXT,
 182                  VLC_FALSE );
 183     add_integer( "rss-length", 60, NULL, LENGTH_TEXT, LENGTH_LONGTEXT,
 184                  VLC_FALSE );
 185     add_integer( "rss-ttl", 1800, NULL, TTL_TEXT, TTL_LONGTEXT, VLC_FALSE );
 186     add_bool( "rss-images", 1, NULL, IMAGE_TEXT, IMAGE_LONGTEXT, VLC_FALSE );
 187
 188     set_description( _("RSS feed display") );
 189     add_shortcut( "rss" );
 190 vlc_module_end();
 191
 192 /*****************************************************************************
 193  * CreateFilter: allocates RSS video filter
 194  *****************************************************************************/
 195 static int CreateFilter( vlc_object_t *p_this )
 196 {
 197     filter_t *p_filter = (filter_t *)p_this;
 198     filter_sys_t *p_sys;
 199     int i_feed;
 200
 201     /* Allocate structure */
 202     p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 203     if( p_sys == NULL )
 204     {
 205         msg_Err( p_filter, "out of memory" );
 206         return VLC_ENOMEM;
 207     }
 208
 209     vlc_mutex_init( p_filter, &p_sys->lock );
 210     vlc_mutex_lock( &p_sys->lock );
 211
 212     p_sys->psz_urls = var_CreateGetString( p_filter, "rss-urls" );
 213     p_sys->i_cur_feed = 0;
 214     p_sys->i_cur_item = 0;
 215     p_sys->i_cur_char = 0;
 216     p_sys->i_feeds = 0;
 217     p_sys->p_feeds = NULL;
 218     p_sys->i_speed = var_CreateGetInteger( p_filter, "rss-speed" );
 219     p_sys->i_length = var_CreateGetInteger( p_filter, "rss-length" );
 220     p_sys->i_ttl = __MAX( 0, var_CreateGetInteger( p_filter, "rss-ttl" ) );
 221     p_sys->b_images = var_CreateGetBool( p_filter, "rss-images" );
 222     p_sys->psz_marquee = (char *)malloc( p_sys->i_length );
 223
 224     p_sys->p_style = malloc( sizeof( text_style_t ));
 225     memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ));
 226
 227     p_sys->i_xoff = var_CreateGetInteger( p_filter, "rss-x" );
 228     p_sys->i_yoff = var_CreateGetInteger( p_filter, "rss-y" );
 229     p_sys->i_pos = var_CreateGetInteger( p_filter, "rss-position" );
 230     p_sys->p_style->i_font_alpha = 255 - var_CreateGetInteger( p_filter, "rss-opacity" );
 231     p_sys->p_style->i_font_color = var_CreateGetInteger( p_filter, "rss-color" );
 232     p_sys->p_style->i_font_size = var_CreateGetInteger( p_filter, "rss-size" );
 233
 234     if( p_sys->b_images == VLC_TRUE && p_sys->p_style->i_font_size == -1 )
 235     {
 236         msg_Warn( p_filter, "rrs-size wasn't specified. Feed images will thus be displayed without being resized" );
 237     }
 238
 239     if( FetchRSS( p_filter ) )
 240     {
 241         msg_Err( p_filter, "failed while fetching RSS ... too bad" );
 242         vlc_mutex_unlock( &p_sys->lock );
 243         return VLC_EGENERIC;
 244     }
 245     p_sys->t_last_update = time( NULL );
 246
 247     if( p_sys->i_feeds == 0 )
 248     {
 249         vlc_mutex_unlock( &p_sys->lock );
 250         return VLC_EGENERIC;
 251     }
 252     for( i_feed=0; i_feed < p_sys->i_feeds; i_feed ++ )
 253         if( p_sys->p_feeds[i_feed].i_items == 0 )
 254         {
 255             vlc_mutex_unlock( &p_sys->lock );
 256             return VLC_EGENERIC;
 257         }
 258
 259     /* Misc init */
 260     p_filter->pf_sub_filter = Filter;
 261     p_sys->last_date = (mtime_t)0;
 262
 263     vlc_mutex_unlock( &p_sys->lock );
 264
 265     return VLC_SUCCESS;
 266 }
 267 /*****************************************************************************
 268  * DestroyFilter: destroy RSS video filter
 269  *****************************************************************************/
 270 static void DestroyFilter( vlc_object_t *p_this )
 271 {
 272     filter_t *p_filter = (filter_t *)p_this;
 273     filter_sys_t *p_sys = p_filter->p_sys;
 274
 275     vlc_mutex_lock( &p_sys->lock );
 276
 277     if( p_sys->p_style ) free( p_sys->p_style );
 278     if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
 279     free( p_sys->psz_urls );
 280     FreeRSS( p_filter );
 281     vlc_mutex_unlock( &p_sys->lock );
 282     vlc_mutex_destroy( &p_sys->lock );
 283     free( p_sys );
 284
 285     /* Delete the RSS variables */
 286     var_Destroy( p_filter, "rss-urls" );
 287     var_Destroy( p_filter, "rss-speed" );
 288     var_Destroy( p_filter, "rss-length" );
 289     var_Destroy( p_filter, "rss-ttl" );
 290     var_Destroy( p_filter, "rss-images" );
 291     var_Destroy( p_filter, "rss-x" );
 292     var_Destroy( p_filter, "rss-y" );
 293     var_Destroy( p_filter, "rss-position" );
 294     var_Destroy( p_filter, "rss-color");
 295     var_Destroy( p_filter, "rss-opacity");
 296     var_Destroy( p_filter, "rss-size");
 297 }
 298
 299 /****************************************************************************
 300  * Filter: the whole thing
 301  ****************************************************************************
 302  * This function outputs subpictures at regular time intervals.
 303  ****************************************************************************/
 304 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
 305 {
 306     filter_sys_t *p_sys = p_filter->p_sys;
 307     subpicture_t *p_spu;
 308     video_format_t fmt = {0};
 309
 310     subpicture_region_t *p_region;
 311
 312     int i_feed, i_item;
 313
 314     struct rss_feed_t *p_feed;
 315
 316     vlc_mutex_lock( &p_sys->lock );
 317
 318     if( p_sys->last_date
 319        + ( p_sys->i_cur_char == 0 && p_sys->i_cur_item == 0 ? 5 : 1 )
 320            /* ( ... ? 5 : 1 ) means "wait more for the 1st char" */
 321        * p_sys->i_speed > date )
 322     {
 323         vlc_mutex_unlock( &p_sys->lock );
 324         return NULL;
 325     }
 326
 327     /* Do we need to update the feeds ? */
 328     if( p_sys->i_ttl
 329         && time( NULL ) > p_sys->t_last_update + (time_t)p_sys->i_ttl )
 330     {
 331         msg_Dbg( p_filter, "Forcing update of all the RSS feeds" );
 332         if( FetchRSS( p_filter ) )
 333         {
 334             msg_Err( p_filter, "failed while fetching RSS ... too bad" );
 335             vlc_mutex_unlock( &p_sys->lock );
 336             return NULL; /* FIXME : we most likely messed up all the data,
 337                           * so we might need to do something about it */
 338         }
 339         p_sys->t_last_update = time( NULL );
 340     }
 341
 342     p_sys->last_date = date;
 343     p_sys->i_cur_char++;
 344     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 )
 345     {
 346         p_sys->i_cur_char = 0;
 347         p_sys->i_cur_item++;
 348         if( p_sys->i_cur_item >= p_sys->p_feeds[p_sys->i_cur_feed].i_items )
 349         {
 350             p_sys->i_cur_item = 0;
 351             p_sys->i_cur_feed = (p_sys->i_cur_feed + 1)%p_sys->i_feeds;
 352         }
 353     }
 354
 355     p_spu = p_filter->pf_sub_buffer_new( p_filter );
 356     if( !p_spu )
 357     {
 358         vlc_mutex_unlock( &p_sys->lock );
 359         return NULL;
 360     }
 361
 362     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 363
 364     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
 365     if( !p_spu->p_region )
 366     {
 367         p_filter->pf_sub_buffer_del( p_filter, p_spu );
 368         vlc_mutex_unlock( &p_sys->lock );
 369         return NULL;
 370     }
 371
 372     /* Generate the string that will be displayed. This string is supposed to
 373        be p_sys->i_length characters long. */
 374     i_item = p_sys->i_cur_item;
 375     i_feed = p_sys->i_cur_feed;
 376     p_feed = &p_sys->p_feeds[p_sys->i_cur_feed];
 377
 378     if( p_feed->p_pic )
 379     {
 380         /* Don't display the feed's title if we have an image */
 381         snprintf( p_sys->psz_marquee, p_sys->i_length, "%s",
 382                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title
 383                   +p_sys->i_cur_char );
 384     }
 385     else
 386     {
 387         snprintf( p_sys->psz_marquee, p_sys->i_length, "%s : %s",
 388                   p_sys->p_feeds[i_feed].psz_title,
 389                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title
 390                   +p_sys->i_cur_char );
 391     }
 392
 393     while( strlen( p_sys->psz_marquee ) < (unsigned int)p_sys->i_length )
 394     {
 395         i_item++;
 396         if( i_item == p_sys->p_feeds[i_feed].i_items ) break;
 397         snprintf( strchr( p_sys->psz_marquee, 0 ),
 398                   p_sys->i_length - strlen( p_sys->psz_marquee ),
 399                   " - %s",
 400                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title );
 401     }
 402
 403     /* Calls to snprintf might split multibyte UTF8 chars ...
 404      * which freetype doesn't like. */
 405     {
 406         char *a = strdup( p_sys->psz_marquee );
 407         char *a2 = a;
 408         char *b = p_sys->psz_marquee;
 409         EnsureUTF8( p_sys->psz_marquee );
 410         /* we want to use ' ' instead of '?' for erroneous chars */
 411         while( *b != '\0' )
 412         {
 413             if( *b != *a ) *b = ' ';
 414             b++;a++;
 415         }
 416         free( a2 );
 417     }
 418
 419     p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
 420     p_spu->i_start = date;
 421     p_spu->i_stop  = 0;
 422     p_spu->b_ephemer = VLC_TRUE;
 423
 424     /*  where to locate the string: */
 425     if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
 426     {   /* set to one of the 9 relative locations */
 427         p_spu->i_flags = p_sys->i_pos;
 428         p_spu->i_x = 0;
 429         p_spu->i_y = 0;
 430         p_spu->b_absolute = VLC_FALSE;
 431     }
 432     else
 433     {   /*  set to an absolute xy, referenced to upper left corner */
 434         p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
 435         p_spu->i_x = p_sys->i_xoff;
 436         p_spu->i_y = p_sys->i_yoff;
 437         p_spu->b_absolute = VLC_TRUE;
 438     }
 439
 440     p_spu->i_height = 1;
 441     p_spu->p_region->p_style = p_sys->p_style;
 442
 443     if( p_feed->p_pic )
 444     {
 445         /* Display the feed's image */
 446         picture_t *p_pic = p_feed->p_pic;
 447         video_format_t fmt_out = {0};
 448
 449         fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 450         fmt_out.i_aspect = VOUT_ASPECT_FACTOR;
 451         fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 452         fmt_out.i_width =
 453             fmt_out.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
 454         fmt_out.i_height =
 455             fmt_out.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
 456
 457         p_region = p_spu->pf_create_region( VLC_OBJECT( p_filter ), &fmt_out );
 458         if( !p_region )
 459         {
 460             msg_Err( p_filter, "cannot allocate SPU region" );
 461         }
 462         else
 463         {
 464             vout_CopyPicture( p_filter, &p_region->picture, p_pic );
 465             p_spu->p_region->p_next = p_region;
 466         }
 467
 468         /* Offset text to display right next to the image */
 469         p_spu->p_region->i_x = p_pic->p[Y_PLANE].i_visible_pitch;
 470     }
 471
 472     vlc_mutex_unlock( &p_sys->lock );
 473     return p_spu;
 474 }
 475
 476 /****************************************************************************
 477  * RSS related functions
 478  ****************************************************************************
 479  * You should always lock the p_filter mutex before using any of these
 480  * functions
 481  ***************************************************************************/
 482
 483 /****************************************************************************
 484  * download and resize image located at psz_url
 485  ***************************************************************************/
 486 picture_t *LoadImage( filter_t *p_filter, const char *psz_url )
 487 {
 488     filter_sys_t *p_sys = p_filter->p_sys;
 489
 490     video_format_t fmt_in={0}, fmt_out={0};
 491     picture_t *p_orig, *p_pic=NULL;
 492     image_handler_t *p_handler = image_HandlerCreate( p_filter );
 493
 494     char *psz_local;
 495
 496     psz_local = ToLocale( psz_url );
 497     fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 498     p_orig = image_ReadUrl( p_handler, psz_local, &fmt_in, &fmt_out );
 499     LocaleFree( psz_local );
 500
 501     if( !p_orig )
 502     {
 503         msg_Warn( p_filter, "Unable to read image %s", psz_url );
 504     }
 505     else if( p_sys->p_style->i_font_size > 0 )
 506     {
 507
 508         fmt_in.i_chroma = VLC_FOURCC('Y','U','V','A');
 509         fmt_in.i_height = p_orig->p[Y_PLANE].i_visible_lines;
 510         fmt_in.i_width = p_orig->p[Y_PLANE].i_visible_pitch;
 511         fmt_out.i_width = p_orig->p[Y_PLANE].i_visible_pitch
 512             *p_sys->p_style->i_font_size/p_orig->p[Y_PLANE].i_visible_lines;
 513         fmt_out.i_height = p_sys->p_style->i_font_size;
 514
 515         p_pic = image_Convert( p_handler, p_orig, &fmt_in, &fmt_out );
 516         p_orig->pf_release( p_orig );
 517         if( !p_pic )
 518         {
 519             msg_Warn( p_filter, "Error while converting %s", psz_url );
 520         }
 521     }
 522     else
 523     {
 524         p_pic = p_orig;
 525     }
 526
 527     image_HandlerDelete( p_handler );
 528
 529     return p_pic;
 530 }
 531
 532 /****************************************************************************
 533  * remove all ' ' '\t' '\n' '\r' characters from the begining and end of the
 534  * string.
 535  ***************************************************************************/
 536 char *removeWhiteChars( char *psz_src )
 537 {
 538     char *psz_src2 = strdup( psz_src );
 539     char *psz_clean = strdup( psz_src2 );
 540     char *psz_clean2;
 541     int i;
 542     while( ( *psz_clean == ' ' || *psz_clean == '\t'
 543            || *psz_clean == '\n' || *psz_clean == '\r' )
 544            && *psz_clean != '\0' )
 545     {
 546         psz_clean++;
 547     }
 548     i = strlen( psz_clean );
 549     while( --i > 0 &&
 550          ( psz_clean[i] == ' ' || psz_clean[i] == '\t'
 551         || psz_clean[i] == '\n' || psz_clean[i] == '\r' ) );
 552     psz_clean[i+1] = '\0';
 553     psz_clean2 = strdup( psz_clean );
 554     free( psz_src2 );
 555     return psz_clean2;
 556 }
 557
 558 /****************************************************************************
 559  * FetchRSS
 560  ***************************************************************************/
 561 static int FetchRSS( filter_t *p_filter)
 562 {
 563     filter_sys_t *p_sys = p_filter->p_sys;
 564
 565     stream_t *p_stream = NULL;
 566     xml_t *p_xml = NULL;
 567     xml_reader_t *p_xml_reader = NULL;
 568
 569     char *psz_eltname = NULL;
 570     char *psz_eltvalue = NULL;
 571     char *psz_feed = NULL;
 572     char *psz_buffer = NULL;
 573     char *psz_buffer_2 = NULL;
 574
 575     int i_feed;
 576     int i_item;
 577     vlc_bool_t b_is_item;
 578     vlc_bool_t b_is_image;
 579     int i_int;
 580
 581     FreeRSS( p_filter );
 582     p_sys->i_feeds = 1;
 583     i_int = 0;
 584     while( p_sys->psz_urls[i_int] != 0 )
 585         if( p_sys->psz_urls[i_int++] == '|' )
 586             p_sys->i_feeds++;
 587     p_sys->p_feeds = (struct rss_feed_t *)malloc( p_sys->i_feeds
 588                                 * sizeof( struct rss_feed_t ) );
 589
 590     p_xml = xml_Create( p_filter );
 591     if( !p_xml )
 592     {
 593         msg_Err( p_filter, "Failed to open XML parser" );
 594         return 1;
 595     }
 596
 597     psz_buffer = strdup( p_sys->psz_urls );
 598     psz_buffer_2 = psz_buffer; /* keep track so we can free it */
 599     for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
 600     {
 601         struct rss_feed_t *p_feed = p_sys->p_feeds+i_feed;
 602
 603         if( psz_buffer == NULL ) break;
 604         if( psz_buffer[0] == 0 ) psz_buffer++;
 605         psz_feed = psz_buffer;
 606         psz_buffer = strchr( psz_buffer, '|' );
 607         if( psz_buffer != NULL ) psz_buffer[0] = 0;
 608
 609         p_feed->psz_title = NULL;
 610         p_feed->psz_description = NULL;
 611         p_feed->psz_link = NULL;
 612         p_feed->psz_image = NULL;
 613         p_feed->p_pic = NULL;
 614         p_feed->i_items = 0;
 615         p_feed->p_items = NULL;
 616
 617         msg_Dbg( p_filter, "Opening %s RSS feed ...", psz_feed );
 618
 619         p_stream = stream_UrlNew( p_filter, psz_feed );
 620         if( !p_stream )
 621         {
 622             msg_Err( p_filter, "Failed to open %s for reading", psz_feed );
 623             return 1;
 624         }
 625
 626         p_xml_reader = xml_ReaderCreate( p_xml, p_stream );
 627         if( !p_xml_reader )
 628         {
 629             msg_Err( p_filter, "Failed to open %s for parsing", psz_feed );
 630             return 1;
 631         }
 632
 633         i_item = 0;
 634         b_is_item = VLC_FALSE;
 635         b_is_image = VLC_FALSE;
 636
 637         while( xml_ReaderRead( p_xml_reader ) == 1 )
 638         {
 639             switch( xml_ReaderNodeType( p_xml_reader ) )
 640             {
 641                 // Error
 642                 case -1:
 643                     return 1;
 644
 645                 case XML_READER_STARTELEM:
 646                     if( psz_eltname )
 647                     {
 648                         free( psz_eltname );
 649                         psz_eltname = NULL;
 650                     }
 651                     psz_eltname = xml_ReaderName( p_xml_reader );
 652                     if( !psz_eltname )
 653                     {
 654                         return 1;
 655                     }
 656 #                   ifdef RSS_DEBUG
 657                     msg_Dbg( p_filter, "element name : %s", psz_eltname );
 658 #                   endif
 659                     if( !strcmp( psz_eltname, "item" ) )
 660                     {
 661                         b_is_item = VLC_TRUE;
 662                         p_feed->i_items++;
 663                         p_feed->p_items = (struct rss_item_t *)realloc( p_feed->p_items, p_feed->i_items * sizeof( struct rss_item_t ) );
 664                         p_feed->p_items[p_feed->i_items-1].psz_title = NULL;
 665                         p_feed->p_items[p_feed->i_items-1].psz_description
 666                                                                      = NULL;
 667                         p_feed->p_items[p_feed->i_items-1].psz_link = NULL;
 668                     }
 669                     else if( !strcmp( psz_eltname, "image" ) )
 670                     {
 671                         b_is_image = VLC_TRUE;
 672                     }
 673                     break;
 674
 675                 case XML_READER_ENDELEM:
 676                     if( psz_eltname )
 677                     {
 678                         free( psz_eltname );
 679                         psz_eltname = NULL;
 680                     }
 681                     psz_eltname = xml_ReaderName( p_xml_reader );
 682                     if( !psz_eltname )
 683                     {
 684                         return 1;
 685                     }
 686 #                   ifdef RSS_DEBUG
 687                     msg_Dbg( p_filter, "element end : %s", psz_eltname );
 688 #                   endif
 689                     if( !strcmp( psz_eltname, "item" ) )
 690                     {
 691                         b_is_item = VLC_FALSE;
 692                         i_item++;
 693                     }
 694                     else if( !strcmp( psz_eltname, "image" ) )
 695                     {
 696                         b_is_image = VLC_FALSE;
 697                     }
 698                     free( psz_eltname );
 699                     psz_eltname = NULL;
 700                     break;
 701
 702                 case XML_READER_TEXT:
 703                     psz_eltvalue = xml_ReaderValue( p_xml_reader );
 704                     if( !psz_eltvalue )
 705                     {
 706                         return 1;
 707                     }
 708                     else
 709                     {
 710                         char *psz_clean;
 711                         psz_clean = removeWhiteChars( psz_eltvalue );
 712                         free( psz_eltvalue ); psz_eltvalue = psz_clean;
 713                     }
 714 #                   ifdef RSS_DEBUG
 715                     msg_Dbg( p_filter, "  text : <%s>", psz_eltvalue );
 716 #                   endif
 717                     if( b_is_item == VLC_TRUE )
 718                     {
 719                         struct rss_item_t *p_item;
 720                         p_item = p_feed->p_items+i_item;
 721                         if( !strcmp( psz_eltname, "title" ) )
 722                         {
 723                             p_item->psz_title = psz_eltvalue;
 724                         }
 725                         else if( !strcmp( psz_eltname, "link" ) )
 726                         {
 727                             p_item->psz_link = psz_eltvalue;
 728                         }
 729                         else if( !strcmp( psz_eltname, "description" ) )
 730                         {
 731                             p_item->psz_description = psz_eltvalue;
 732                         }
 733                         else
 734                         {
 735                             free( psz_eltvalue );
 736                             psz_eltvalue = NULL;
 737                         }
 738                     }
 739                     else if( b_is_image == VLC_TRUE )
 740                     {
 741                         if( !strcmp( psz_eltname, "url" ) )
 742                         {
 743                             p_feed->psz_image = psz_eltvalue;
 744                             if( p_sys->b_images == VLC_TRUE )
 745                                 p_feed->p_pic = LoadImage( p_filter,
 746                                                            p_feed->psz_image );
 747                         }
 748                         else
 749                         {
 750                             free( psz_eltvalue );
 751                             psz_eltvalue = NULL;
 752                         }
 753                     }
 754                     else
 755                     {
 756                         if( !strcmp( psz_eltname, "title" ) )
 757                         {
 758                             p_feed->psz_title = psz_eltvalue;
 759                         }
 760                         else if( !strcmp( psz_eltname, "link" ) )
 761                         {
 762                             p_feed->psz_link = psz_eltvalue;
 763                         }
 764                         else if( !strcmp( psz_eltname, "description" ) )
 765                         {
 766                             p_feed->psz_description = psz_eltvalue;
 767                         }
 768                         else
 769                         {
 770                             free( psz_eltvalue );
 771                             psz_eltvalue = NULL;
 772                         }
 773                     }
 774                     break;
 775             }
 776         }
 777
 778         if( p_xml_reader && p_xml ) xml_ReaderDelete( p_xml, p_xml_reader );
 779         if( p_stream ) stream_Delete( p_stream );
 780         msg_Dbg( p_filter, "Done with %s RSS feed.", psz_feed );
 781     }
 782     free( psz_buffer_2 );
 783     if( p_xml ) xml_Delete( p_xml );
 784
 785     return 0;
 786 }
 787
 788 /****************************************************************************
 789  * FreeRSS
 790  ***************************************************************************/
 791 static void FreeRSS( filter_t *p_filter)
 792 {
 793     filter_sys_t *p_sys = p_filter->p_sys;
 794
 795     struct rss_item_t *p_item;
 796     struct rss_feed_t *p_feed;
 797
 798     int i_feed;
 799     int i_item;
 800
 801     for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
 802     {
 803         p_feed = p_sys->p_feeds+i_feed;
 804         for( i_item = 0; i_item < p_feed->i_items; i_item++ )
 805         {
 806             p_item = p_feed->p_items+i_item;
 807             free( p_item->psz_title );
 808             free( p_item->psz_link );
 809             free( p_item->psz_description );
 810         }
 811         free( p_feed->p_items );
 812         free( p_feed->psz_title);
 813         free( p_feed->psz_link );
 814         free( p_feed->psz_description );
 815         free( p_feed->psz_image );
 816         if( p_feed->p_pic != NULL )
 817             p_feed->p_pic->pf_release( p_feed->p_pic );
 818     }
 819     free( p_sys->p_feeds );
 820     p_sys->i_feeds = 0;
 821 }