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

   1 /*****************************************************************************
   2  * rss.c : rss/atom 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/Atom feed URLs")
 117 #define MSG_LONGTEXT N_("RSS/Atom feed '|' (pipe) seperated URLs")
 118 #define SPEED_TEXT N_("RSS/Atom feed speed")
 119 #define SPEED_LONGTEXT N_("RSS/Atom feed speed (bigger is slower)")
 120 #define LENGTH_TEXT N_("RSS/Atom feed max number of chars displayed")
 121 #define LENGTH_LONGTEXT N_("RSS/Atom 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 / Atom" );
 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 and Atom feed display") );
 189     add_shortcut( "rss" );
 190     add_shortcut( "atom" );
 191 vlc_module_end();
 192
 193 /*****************************************************************************
 194  * CreateFilter: allocates RSS video filter
 195  *****************************************************************************/
 196 static int CreateFilter( vlc_object_t *p_this )
 197 {
 198     filter_t *p_filter = (filter_t *)p_this;
 199     filter_sys_t *p_sys;
 200     int i_feed;
 201
 202     /* Allocate structure */
 203     p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 204     if( p_sys == NULL )
 205     {
 206         msg_Err( p_filter, "out of memory" );
 207         return VLC_ENOMEM;
 208     }
 209
 210     vlc_mutex_init( p_filter, &p_sys->lock );
 211     vlc_mutex_lock( &p_sys->lock );
 212
 213     p_sys->psz_urls = var_CreateGetString( p_filter, "rss-urls" );
 214     p_sys->i_cur_feed = 0;
 215     p_sys->i_cur_item = 0;
 216     p_sys->i_cur_char = 0;
 217     p_sys->i_feeds = 0;
 218     p_sys->p_feeds = NULL;
 219     p_sys->i_speed = var_CreateGetInteger( p_filter, "rss-speed" );
 220     p_sys->i_length = var_CreateGetInteger( p_filter, "rss-length" );
 221     p_sys->i_ttl = __MAX( 0, var_CreateGetInteger( p_filter, "rss-ttl" ) );
 222     p_sys->b_images = var_CreateGetBool( p_filter, "rss-images" );
 223     p_sys->psz_marquee = (char *)malloc( p_sys->i_length );
 224
 225     p_sys->p_style = malloc( sizeof( text_style_t ));
 226     memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ));
 227
 228     p_sys->i_xoff = var_CreateGetInteger( p_filter, "rss-x" );
 229     p_sys->i_yoff = var_CreateGetInteger( p_filter, "rss-y" );
 230     p_sys->i_pos = var_CreateGetInteger( p_filter, "rss-position" );
 231     p_sys->p_style->i_font_alpha = 255 - var_CreateGetInteger( p_filter, "rss-opacity" );
 232     p_sys->p_style->i_font_color = var_CreateGetInteger( p_filter, "rss-color" );
 233     p_sys->p_style->i_font_size = var_CreateGetInteger( p_filter, "rss-size" );
 234
 235     if( p_sys->b_images == VLC_TRUE && p_sys->p_style->i_font_size == -1 )
 236     {
 237         msg_Warn( p_filter, "rrs-size wasn't specified. Feed images will thus be displayed without being resized" );
 238     }
 239
 240     if( FetchRSS( p_filter ) )
 241     {
 242         msg_Err( p_filter, "failed while fetching RSS ... too bad" );
 243         vlc_mutex_unlock( &p_sys->lock );
 244         return VLC_EGENERIC;
 245     }
 246     p_sys->t_last_update = time( NULL );
 247
 248     if( p_sys->i_feeds == 0 )
 249     {
 250         vlc_mutex_unlock( &p_sys->lock );
 251         return VLC_EGENERIC;
 252     }
 253     for( i_feed=0; i_feed < p_sys->i_feeds; i_feed ++ )
 254         if( p_sys->p_feeds[i_feed].i_items == 0 )
 255         {
 256             vlc_mutex_unlock( &p_sys->lock );
 257             return VLC_EGENERIC;
 258         }
 259
 260     /* Misc init */
 261     p_filter->pf_sub_filter = Filter;
 262     p_sys->last_date = (mtime_t)0;
 263
 264     vlc_mutex_unlock( &p_sys->lock );
 265
 266     return VLC_SUCCESS;
 267 }
 268 /*****************************************************************************
 269  * DestroyFilter: destroy RSS video filter
 270  *****************************************************************************/
 271 static void DestroyFilter( vlc_object_t *p_this )
 272 {
 273     filter_t *p_filter = (filter_t *)p_this;
 274     filter_sys_t *p_sys = p_filter->p_sys;
 275
 276     vlc_mutex_lock( &p_sys->lock );
 277
 278     if( p_sys->p_style ) free( p_sys->p_style );
 279     if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
 280     free( p_sys->psz_urls );
 281     FreeRSS( p_filter );
 282     vlc_mutex_unlock( &p_sys->lock );
 283     vlc_mutex_destroy( &p_sys->lock );
 284     free( p_sys );
 285
 286     /* Delete the RSS variables */
 287     var_Destroy( p_filter, "rss-urls" );
 288     var_Destroy( p_filter, "rss-speed" );
 289     var_Destroy( p_filter, "rss-length" );
 290     var_Destroy( p_filter, "rss-ttl" );
 291     var_Destroy( p_filter, "rss-images" );
 292     var_Destroy( p_filter, "rss-x" );
 293     var_Destroy( p_filter, "rss-y" );
 294     var_Destroy( p_filter, "rss-position" );
 295     var_Destroy( p_filter, "rss-color");
 296     var_Destroy( p_filter, "rss-opacity");
 297     var_Destroy( p_filter, "rss-size");
 298 }
 299
 300 /****************************************************************************
 301  * Filter: the whole thing
 302  ****************************************************************************
 303  * This function outputs subpictures at regular time intervals.
 304  ****************************************************************************/
 305 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
 306 {
 307     filter_sys_t *p_sys = p_filter->p_sys;
 308     subpicture_t *p_spu;
 309     video_format_t fmt = {0};
 310
 311     subpicture_region_t *p_region;
 312
 313     int i_feed, i_item;
 314
 315     struct rss_feed_t *p_feed;
 316
 317     vlc_mutex_lock( &p_sys->lock );
 318
 319     if( p_sys->last_date
 320        + ( p_sys->i_cur_char == 0 && p_sys->i_cur_item == 0 ? 5 : 1 )
 321            /* ( ... ? 5 : 1 ) means "wait more for the 1st char" */
 322        * p_sys->i_speed > date )
 323     {
 324         vlc_mutex_unlock( &p_sys->lock );
 325         return NULL;
 326     }
 327
 328     /* Do we need to update the feeds ? */
 329     if( p_sys->i_ttl
 330         && time( NULL ) > p_sys->t_last_update + (time_t)p_sys->i_ttl )
 331     {
 332         msg_Dbg( p_filter, "Forcing update of all the RSS feeds" );
 333         if( FetchRSS( p_filter ) )
 334         {
 335             msg_Err( p_filter, "failed while fetching RSS ... too bad" );
 336             vlc_mutex_unlock( &p_sys->lock );
 337             return NULL; /* FIXME : we most likely messed up all the data,
 338                           * so we might need to do something about it */
 339         }
 340         p_sys->t_last_update = time( NULL );
 341     }
 342
 343     p_sys->last_date = date;
 344     p_sys->i_cur_char++;
 345     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 )
 346     {
 347         p_sys->i_cur_char = 0;
 348         p_sys->i_cur_item++;
 349         if( p_sys->i_cur_item >= p_sys->p_feeds[p_sys->i_cur_feed].i_items )
 350         {
 351             p_sys->i_cur_item = 0;
 352             p_sys->i_cur_feed = (p_sys->i_cur_feed + 1)%p_sys->i_feeds;
 353         }
 354     }
 355
 356     p_spu = p_filter->pf_sub_buffer_new( p_filter );
 357     if( !p_spu )
 358     {
 359         vlc_mutex_unlock( &p_sys->lock );
 360         return NULL;
 361     }
 362
 363     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 364
 365     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
 366     if( !p_spu->p_region )
 367     {
 368         p_filter->pf_sub_buffer_del( p_filter, p_spu );
 369         vlc_mutex_unlock( &p_sys->lock );
 370         return NULL;
 371     }
 372
 373     /* Generate the string that will be displayed. This string is supposed to
 374        be p_sys->i_length characters long. */
 375     i_item = p_sys->i_cur_item;
 376     i_feed = p_sys->i_cur_feed;
 377     p_feed = &p_sys->p_feeds[p_sys->i_cur_feed];
 378
 379     if( p_feed->p_pic )
 380     {
 381         /* Don't display the feed's title if we have an image */
 382         snprintf( p_sys->psz_marquee, p_sys->i_length, "%s",
 383                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title
 384                   +p_sys->i_cur_char );
 385     }
 386     else
 387     {
 388         snprintf( p_sys->psz_marquee, p_sys->i_length, "%s : %s",
 389                   p_sys->p_feeds[i_feed].psz_title,
 390                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title
 391                   +p_sys->i_cur_char );
 392     }
 393
 394     while( strlen( p_sys->psz_marquee ) < (unsigned int)p_sys->i_length )
 395     {
 396         i_item++;
 397         if( i_item == p_sys->p_feeds[i_feed].i_items ) break;
 398         snprintf( strchr( p_sys->psz_marquee, 0 ),
 399                   p_sys->i_length - strlen( p_sys->psz_marquee ),
 400                   " - %s",
 401                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title );
 402     }
 403
 404     /* Calls to snprintf might split multibyte UTF8 chars ...
 405      * which freetype doesn't like. */
 406     {
 407         char *a = strdup( p_sys->psz_marquee );
 408         char *a2 = a;
 409         char *b = p_sys->psz_marquee;
 410         EnsureUTF8( p_sys->psz_marquee );
 411         /* we want to use ' ' instead of '?' for erroneous chars */
 412         while( *b != '\0' )
 413         {
 414             if( *b != *a ) *b = ' ';
 415             b++;a++;
 416         }
 417         free( a2 );
 418     }
 419
 420     p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
 421     p_spu->i_start = date;
 422     p_spu->i_stop  = 0;
 423     p_spu->b_ephemer = VLC_TRUE;
 424
 425     /*  where to locate the string: */
 426     if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
 427     {   /* set to one of the 9 relative locations */
 428         p_spu->i_flags = p_sys->i_pos;
 429         p_spu->i_x = 0;
 430         p_spu->i_y = 0;
 431         p_spu->b_absolute = VLC_FALSE;
 432     }
 433     else
 434     {   /*  set to an absolute xy, referenced to upper left corner */
 435         p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
 436         p_spu->i_x = p_sys->i_xoff;
 437         p_spu->i_y = p_sys->i_yoff;
 438         p_spu->b_absolute = VLC_TRUE;
 439     }
 440
 441     p_spu->i_height = 1;
 442     p_spu->p_region->p_style = p_sys->p_style;
 443
 444     if( p_feed->p_pic )
 445     {
 446         /* Display the feed's image */
 447         picture_t *p_pic = p_feed->p_pic;
 448         video_format_t fmt_out = {0};
 449
 450         fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 451         fmt_out.i_aspect = VOUT_ASPECT_FACTOR;
 452         fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 453         fmt_out.i_width =
 454             fmt_out.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
 455         fmt_out.i_height =
 456             fmt_out.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
 457
 458         p_region = p_spu->pf_create_region( VLC_OBJECT( p_filter ), &fmt_out );
 459         if( !p_region )
 460         {
 461             msg_Err( p_filter, "cannot allocate SPU region" );
 462         }
 463         else
 464         {
 465             vout_CopyPicture( p_filter, &p_region->picture, p_pic );
 466             p_spu->p_region->p_next = p_region;
 467         }
 468
 469         /* Offset text to display right next to the image */
 470         p_spu->p_region->i_x = p_pic->p[Y_PLANE].i_visible_pitch;
 471     }
 472
 473     vlc_mutex_unlock( &p_sys->lock );
 474     return p_spu;
 475 }
 476
 477 /****************************************************************************
 478  * RSS related functions
 479  ****************************************************************************
 480  * You should always lock the p_filter mutex before using any of these
 481  * functions
 482  ***************************************************************************/
 483
 484 #undef LoadImage /* do not conflict with Win32 API */
 485
 486 /****************************************************************************
 487  * download and resize image located at psz_url
 488  ***************************************************************************/
 489 picture_t *LoadImage( filter_t *p_filter, const char *psz_url )
 490 {
 491     filter_sys_t *p_sys = p_filter->p_sys;
 492
 493     video_format_t fmt_in={0}, fmt_out={0};
 494     picture_t *p_orig, *p_pic=NULL;
 495     image_handler_t *p_handler = image_HandlerCreate( p_filter );
 496
 497     char *psz_local;
 498
 499     psz_local = ToLocale( psz_url );
 500     fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 501     p_orig = image_ReadUrl( p_handler, psz_local, &fmt_in, &fmt_out );
 502     LocaleFree( psz_local );
 503
 504     if( !p_orig )
 505     {
 506         msg_Warn( p_filter, "Unable to read image %s", psz_url );
 507     }
 508     else if( p_sys->p_style->i_font_size > 0 )
 509     {
 510
 511         fmt_in.i_chroma = VLC_FOURCC('Y','U','V','A');
 512         fmt_in.i_height = p_orig->p[Y_PLANE].i_visible_lines;
 513         fmt_in.i_width = p_orig->p[Y_PLANE].i_visible_pitch;
 514         fmt_out.i_width = p_orig->p[Y_PLANE].i_visible_pitch
 515             *p_sys->p_style->i_font_size/p_orig->p[Y_PLANE].i_visible_lines;
 516         fmt_out.i_height = p_sys->p_style->i_font_size;
 517
 518         p_pic = image_Convert( p_handler, p_orig, &fmt_in, &fmt_out );
 519         p_orig->pf_release( p_orig );
 520         if( !p_pic )
 521         {
 522             msg_Warn( p_filter, "Error while converting %s", psz_url );
 523         }
 524     }
 525     else
 526     {
 527         p_pic = p_orig;
 528     }
 529
 530     image_HandlerDelete( p_handler );
 531
 532     return p_pic;
 533 }
 534
 535 /****************************************************************************
 536  * remove all ' ' '\t' '\n' '\r' characters from the begining and end of the
 537  * string.
 538  ***************************************************************************/
 539 char *removeWhiteChars( char *psz_src )
 540 {
 541     char *psz_src2 = strdup( psz_src );
 542     char *psz_clean = strdup( psz_src2 );
 543     char *psz_clean2;
 544     int i;
 545     while( ( *psz_clean == ' ' || *psz_clean == '\t'
 546            || *psz_clean == '\n' || *psz_clean == '\r' )
 547            && *psz_clean != '\0' )
 548     {
 549         psz_clean++;
 550     }
 551     i = strlen( psz_clean );
 552     while( --i > 0 &&
 553          ( psz_clean[i] == ' ' || psz_clean[i] == '\t'
 554         || psz_clean[i] == '\n' || psz_clean[i] == '\r' ) );
 555     psz_clean[i+1] = '\0';
 556     psz_clean2 = strdup( psz_clean );
 557     free( psz_src2 );
 558     return psz_clean2;
 559 }
 560
 561 /****************************************************************************
 562  * FetchRSS
 563  ***************************************************************************/
 564 static int FetchRSS( filter_t *p_filter)
 565 {
 566     filter_sys_t *p_sys = p_filter->p_sys;
 567
 568     stream_t *p_stream = NULL;
 569     xml_t *p_xml = NULL;
 570     xml_reader_t *p_xml_reader = NULL;
 571
 572     char *psz_eltname = NULL;
 573     char *psz_eltvalue = NULL;
 574     char *psz_feed = NULL;
 575     char *psz_buffer = NULL;
 576     char *psz_buffer_2 = NULL;
 577
 578     int i_feed;
 579     int i_item;
 580     vlc_bool_t b_is_item;
 581     vlc_bool_t b_is_image;
 582     int i_int;
 583
 584     FreeRSS( p_filter );
 585     p_sys->i_feeds = 1;
 586     i_int = 0;
 587     while( p_sys->psz_urls[i_int] != 0 )
 588         if( p_sys->psz_urls[i_int++] == '|' )
 589             p_sys->i_feeds++;
 590     p_sys->p_feeds = (struct rss_feed_t *)malloc( p_sys->i_feeds
 591                                 * sizeof( struct rss_feed_t ) );
 592
 593     p_xml = xml_Create( p_filter );
 594     if( !p_xml )
 595     {
 596         msg_Err( p_filter, "Failed to open XML parser" );
 597         return 1;
 598     }
 599
 600     psz_buffer = strdup( p_sys->psz_urls );
 601     psz_buffer_2 = psz_buffer; /* keep track so we can free it */
 602     for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
 603     {
 604         struct rss_feed_t *p_feed = p_sys->p_feeds+i_feed;
 605
 606         if( psz_buffer == NULL ) break;
 607         if( psz_buffer[0] == 0 ) psz_buffer++;
 608         psz_feed = psz_buffer;
 609         psz_buffer = strchr( psz_buffer, '|' );
 610         if( psz_buffer != NULL ) psz_buffer[0] = 0;
 611
 612         p_feed->psz_title = NULL;
 613         p_feed->psz_description = NULL;
 614         p_feed->psz_link = NULL;
 615         p_feed->psz_image = NULL;
 616         p_feed->p_pic = NULL;
 617         p_feed->i_items = 0;
 618         p_feed->p_items = NULL;
 619
 620         msg_Dbg( p_filter, "Opening %s RSS feed ...", psz_feed );
 621
 622         p_stream = stream_UrlNew( p_filter, psz_feed );
 623         if( !p_stream )
 624         {
 625             msg_Err( p_filter, "Failed to open %s for reading", psz_feed );
 626             return 1;
 627         }
 628
 629         p_xml_reader = xml_ReaderCreate( p_xml, p_stream );
 630         if( !p_xml_reader )
 631         {
 632             msg_Err( p_filter, "Failed to open %s for parsing", psz_feed );
 633             return 1;
 634         }
 635
 636         i_item = 0;
 637         b_is_item = VLC_FALSE;
 638         b_is_image = VLC_FALSE;
 639
 640         while( xml_ReaderRead( p_xml_reader ) == 1 )
 641         {
 642             switch( xml_ReaderNodeType( p_xml_reader ) )
 643             {
 644                 // Error
 645                 case -1:
 646                     return 1;
 647
 648                 case XML_READER_STARTELEM:
 649                     if( psz_eltname )
 650                     {
 651                         free( psz_eltname );
 652                         psz_eltname = NULL;
 653                     }
 654                     psz_eltname = xml_ReaderName( p_xml_reader );
 655                     if( !psz_eltname )
 656                     {
 657                         return 1;
 658                     }
 659 #                   define RSS_DEBUG
 660 #                   ifdef RSS_DEBUG
 661                     msg_Dbg( p_filter, "element name : %s", psz_eltname );
 662 #                   endif
 663                     if( !strcmp( psz_eltname, "item" )
 664                      || !strcmp( psz_eltname, "entry" ) )
 665                     {
 666                         b_is_item = VLC_TRUE;
 667                         p_feed->i_items++;
 668                         p_feed->p_items = (struct rss_item_t *)realloc( p_feed->p_items, p_feed->i_items * sizeof( struct rss_item_t ) );
 669                         p_feed->p_items[p_feed->i_items-1].psz_title = NULL;
 670                         p_feed->p_items[p_feed->i_items-1].psz_description
 671                                                                      = NULL;
 672                         p_feed->p_items[p_feed->i_items-1].psz_link = NULL;
 673                     }
 674                     else if( !strcmp( psz_eltname, "image" ) )
 675                     {
 676                         b_is_image = VLC_TRUE;
 677                     }
 678                     break;
 679
 680                 case XML_READER_ENDELEM:
 681                     if( psz_eltname )
 682                     {
 683                         free( psz_eltname );
 684                         psz_eltname = NULL;
 685                     }
 686                     psz_eltname = xml_ReaderName( p_xml_reader );
 687                     if( !psz_eltname )
 688                     {
 689                         return 1;
 690                     }
 691 #                   ifdef RSS_DEBUG
 692                     msg_Dbg( p_filter, "element end : %s", psz_eltname );
 693 #                   endif
 694                     if( !strcmp( psz_eltname, "item" )
 695                      || !strcmp( psz_eltname, "entry" ) )
 696                     {
 697                         b_is_item = VLC_FALSE;
 698                         i_item++;
 699                     }
 700                     else if( !strcmp( psz_eltname, "image" ) )
 701                     {
 702                         b_is_image = VLC_FALSE;
 703                     }
 704                     free( psz_eltname );
 705                     psz_eltname = NULL;
 706                     break;
 707
 708                 case XML_READER_TEXT:
 709                     if( !psz_eltname ) break;
 710                     psz_eltvalue = xml_ReaderValue( p_xml_reader );
 711                     if( !psz_eltvalue )
 712                     {
 713                         return 1;
 714                     }
 715                     else
 716                     {
 717                         char *psz_clean;
 718                         psz_clean = removeWhiteChars( psz_eltvalue );
 719                         free( psz_eltvalue ); psz_eltvalue = psz_clean;
 720                     }
 721 #                   ifdef RSS_DEBUG
 722                     msg_Dbg( p_filter, "  text : <%s>", psz_eltvalue );
 723 #                   endif
 724                     if( b_is_item == VLC_TRUE )
 725                     {
 726                         struct rss_item_t *p_item;
 727                         p_item = p_feed->p_items+i_item;
 728                         if( !strcmp( psz_eltname, "title" ) )
 729                         {
 730                             p_item->psz_title = psz_eltvalue;
 731                         }
 732                         else if( !strcmp( psz_eltname, "link" ) )
 733                         {
 734                             p_item->psz_link = psz_eltvalue;
 735                         }
 736                         else if( !strcmp( psz_eltname, "description" ) )
 737                         {
 738                             p_item->psz_description = psz_eltvalue;
 739                         }
 740                         else
 741                         {
 742                             free( psz_eltvalue );
 743                             psz_eltvalue = NULL;
 744                         }
 745                     }
 746                     else if( b_is_image == VLC_TRUE )
 747                     {
 748                         if( !strcmp( psz_eltname, "url" ) )
 749                         {
 750                             p_feed->psz_image = psz_eltvalue;
 751                             if( p_sys->b_images == VLC_TRUE )
 752                                 p_feed->p_pic = LoadImage( p_filter,
 753                                                            p_feed->psz_image );
 754                         }
 755                         else
 756                         {
 757                             free( psz_eltvalue );
 758                             psz_eltvalue = NULL;
 759                         }
 760                     }
 761                     else
 762                     {
 763                         if( !strcmp( psz_eltname, "title" ) )
 764                         {
 765                             p_feed->psz_title = psz_eltvalue;
 766                         }
 767                         else if( !strcmp( psz_eltname, "link" ) )
 768                         {
 769                             p_feed->psz_link = psz_eltvalue;
 770                         }
 771                         else if( !strcmp( psz_eltname, "description" )
 772                               || !strcmp( psz_eltname, "subtitle" ) )
 773                         {
 774                             p_feed->psz_description = psz_eltvalue;
 775                         }
 776                         else
 777                         {
 778                             free( psz_eltvalue );
 779                             psz_eltvalue = NULL;
 780                         }
 781                     }
 782                     break;
 783             }
 784         }
 785
 786         if( p_xml_reader && p_xml ) xml_ReaderDelete( p_xml, p_xml_reader );
 787         if( p_stream ) stream_Delete( p_stream );
 788         msg_Dbg( p_filter, "Done with %s RSS feed.", psz_feed );
 789     }
 790     free( psz_buffer_2 );
 791     if( p_xml ) xml_Delete( p_xml );
 792
 793     return 0;
 794 }
 795
 796 /****************************************************************************
 797  * FreeRSS
 798  ***************************************************************************/
 799 static void FreeRSS( filter_t *p_filter)
 800 {
 801     filter_sys_t *p_sys = p_filter->p_sys;
 802
 803     struct rss_item_t *p_item;
 804     struct rss_feed_t *p_feed;
 805
 806     int i_feed;
 807     int i_item;
 808
 809     for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
 810     {
 811         p_feed = p_sys->p_feeds+i_feed;
 812         for( i_item = 0; i_item < p_feed->i_items; i_item++ )
 813         {
 814             p_item = p_feed->p_items+i_item;
 815             free( p_item->psz_title );
 816             free( p_item->psz_link );
 817             free( p_item->psz_description );
 818         }
 819         free( p_feed->p_items );
 820         free( p_feed->psz_title);
 821         free( p_feed->psz_link );
 822         free( p_feed->psz_description );
 823         free( p_feed->psz_image );
 824         if( p_feed->p_pic != NULL )
 825             p_feed->p_pic->pf_release( p_feed->p_pic );
 826     }
 827     free( p_sys->p_feeds );
 828     p_sys->i_feeds = 0;
 829 }