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  * Atom : http://www.ietf.org/rfc/rfc4287.txt
  26  * RSS : http://www.rssboard.org/rss-specification
  27  *****************************************************************************/
  28
  29 /*****************************************************************************
  30  * Preamble
  31  *****************************************************************************/
  32 #include <stdlib.h>                                      /* malloc(), free() */
  33 #include <string.h>
  34
  35 #include <vlc/vlc.h>
  36 #include <vlc/vout.h>
  37
  38 #include "vlc_filter.h"
  39 #include "vlc_block.h"
  40 #include "vlc_osd.h"
  41
  42 #include "vlc_block.h"
  43 #include "vlc_stream.h"
  44 #include "vlc_xml.h"
  45 #include "charset.h"
  46
  47 #include "vlc_image.h"
  48
  49 /*****************************************************************************
  50  * Local prototypes
  51  *****************************************************************************/
  52 static int  CreateFilter ( vlc_object_t * );
  53 static void DestroyFilter( vlc_object_t * );
  54 static subpicture_t *Filter( filter_t *, mtime_t );
  55
  56 static int FetchRSS( filter_t * );
  57 static void FreeRSS( filter_t * );
  58
  59 static int pi_color_values[] = { 0xf0000000, 0x00000000, 0x00808080, 0x00C0C0C0,
  60                0x00FFFFFF, 0x00800000, 0x00FF0000, 0x00FF00FF, 0x00FFFF00,
  61                0x00808000, 0x00008000, 0x00008080, 0x0000FF00, 0x00800080,
  62                0x00000080, 0x000000FF, 0x0000FFFF};
  63 static char *ppsz_color_descriptions[] = { N_("Default"), N_("Black"),
  64                N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"), N_("Red"),
  65                N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"),
  66                N_("Teal"), N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"),
  67                N_("Aqua") };
  68
  69 /*****************************************************************************
  70  * filter_sys_t: rss filter descriptor
  71  *****************************************************************************/
  72
  73 struct rss_item_t
  74 {
  75     char *psz_title;
  76     char *psz_description;
  77     char *psz_link;
  78 };
  79
  80 struct rss_feed_t
  81 {
  82     char *psz_title;
  83     char *psz_description;
  84     char *psz_link;
  85     char *psz_image;
  86     picture_t *p_pic;
  87
  88     int i_items;
  89     struct rss_item_t *p_items;
  90 };
  91
  92 struct filter_sys_t
  93 {
  94     vlc_mutex_t lock;
  95     vlc_mutex_t *p_lock;
  96
  97     int i_xoff, i_yoff;  /* offsets for the display string in the video window */
  98     int i_pos; /* permit relative positioning (top, bottom, left, right, center) */
  99     int i_speed;
 100     int i_length;
 101
 102     char *psz_marquee;    /* marquee string */
 103
 104     text_style_t *p_style; /* font control */
 105
 106     mtime_t last_date;
 107
 108     char *psz_urls;
 109     int i_feeds;
 110     struct rss_feed_t *p_feeds;
 111
 112     int i_ttl;
 113     time_t t_last_update;
 114     vlc_bool_t b_images;
 115
 116     int i_cur_feed;
 117     int i_cur_item;
 118     int i_cur_char;
 119 };
 120
 121 #define MSG_TEXT N_("RSS/Atom feed URLs")
 122 #define MSG_LONGTEXT N_("RSS/Atom feed '|' (pipe) seperated URLs")
 123 #define SPEED_TEXT N_("RSS/Atom feed speed")
 124 #define SPEED_LONGTEXT N_("RSS/Atom feed speed (bigger is slower)")
 125 #define LENGTH_TEXT N_("RSS/Atom feed max number of chars displayed")
 126 #define LENGTH_LONGTEXT N_("RSS/Atom feed max number of chars displayed")
 127 #define TTL_TEXT N_("Number of seconds between each forced refresh of the feeds")
 128 #define TTL_LONGTEXT N_("Number of seconds between each forced refresh of the feeds. If 0, the feeds will never be updated.")
 129 #define IMAGE_TEXT N_("Display feed images if available")
 130 #define IMAGE_LONGTEXT N_("Display feed images if available")
 131
 132 #define POSX_TEXT N_("X offset, from left")
 133 #define POSX_LONGTEXT N_("X offset, from the left screen edge" )
 134 #define POSY_TEXT N_("Y offset, from the top")
 135 #define POSY_LONGTEXT N_("Y offset, down from the top" )
 136 #define OPACITY_TEXT N_("Opacity")
 137 #define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of " \
 138     "overlay text. 0 = transparent, 255 = totally opaque. " )
 139 #define SIZE_TEXT N_("Font size, pixels")
 140 #define SIZE_LONGTEXT N_("Specify the font size, in pixels, " \
 141     "with -1 = use freetype-fontsize" )
 142
 143 #define COLOR_TEXT N_("Text Default Color")
 144 #define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, hexadecimal. " \
 145     "#000000 = all colors off, " \
 146     "0xFF0000 = just Red, 0xFFFFFF = all color on [White]" )
 147
 148 #define POS_TEXT N_("Marquee position")
 149 #define POS_LONGTEXT N_( \
 150   "You can enforce the marquee position on the video " \
 151   "(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
 152   "also use combinations of these values by adding them).")
 153
 154 static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
 155 static char *ppsz_pos_descriptions[] =
 156      { N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
 157      N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
 158
 159 /*****************************************************************************
 160  * Module descriptor
 161  *****************************************************************************/
 162 vlc_module_begin();
 163     set_capability( "sub filter", 0 );
 164     set_shortname( "RSS / Atom" );
 165     set_callbacks( CreateFilter, DestroyFilter );
 166     set_category( CAT_VIDEO );
 167     set_subcategory( SUBCAT_VIDEO_SUBPIC );
 168     add_string( "rss-urls", "rss", NULL, MSG_TEXT, MSG_LONGTEXT, VLC_FALSE );
 169
 170     set_section( N_("Position"), NULL );
 171     add_integer( "rss-x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_TRUE );
 172     add_integer( "rss-y", 0, NULL, POSY_TEXT, POSY_LONGTEXT, VLC_TRUE );
 173     add_integer( "rss-position", 5, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
 174         change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
 175
 176     set_section( N_("Font"), NULL );
 177     /* 5 sets the default to top [1] left [4] */
 178     add_integer_with_range( "rss-opacity", 255, 0, 255, NULL,
 179         OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
 180     add_integer( "rss-color", 0xFFFFFF, NULL, COLOR_TEXT, COLOR_LONGTEXT,
 181                   VLC_FALSE );
 182         change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
 183     add_integer( "rss-size", -1, NULL, SIZE_TEXT, SIZE_LONGTEXT, VLC_FALSE );
 184
 185     set_section( N_("Misc"), NULL );
 186     add_integer( "rss-speed", 100000, NULL, SPEED_TEXT, SPEED_LONGTEXT,
 187                  VLC_FALSE );
 188     add_integer( "rss-length", 60, NULL, LENGTH_TEXT, LENGTH_LONGTEXT,
 189                  VLC_FALSE );
 190     add_integer( "rss-ttl", 1800, NULL, TTL_TEXT, TTL_LONGTEXT, VLC_FALSE );
 191     add_bool( "rss-images", 1, NULL, IMAGE_TEXT, IMAGE_LONGTEXT, VLC_FALSE );
 192
 193     set_description( _("RSS and Atom feed display") );
 194     add_shortcut( "rss" );
 195     add_shortcut( "atom" );
 196 vlc_module_end();
 197
 198 /*****************************************************************************
 199  * CreateFilter: allocates RSS video filter
 200  *****************************************************************************/
 201 static int CreateFilter( vlc_object_t *p_this )
 202 {
 203     filter_t *p_filter = (filter_t *)p_this;
 204     filter_sys_t *p_sys;
 205     int i_feed;
 206
 207     /* Allocate structure */
 208     p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
 209     if( p_sys == NULL )
 210     {
 211         msg_Err( p_filter, "out of memory" );
 212         return VLC_ENOMEM;
 213     }
 214
 215     vlc_mutex_init( p_filter, &p_sys->lock );
 216     vlc_mutex_lock( &p_sys->lock );
 217
 218     p_sys->psz_urls = var_CreateGetString( p_filter, "rss-urls" );
 219     p_sys->i_cur_feed = 0;
 220     p_sys->i_cur_item = 0;
 221     p_sys->i_cur_char = 0;
 222     p_sys->i_feeds = 0;
 223     p_sys->p_feeds = NULL;
 224     p_sys->i_speed = var_CreateGetInteger( p_filter, "rss-speed" );
 225     p_sys->i_length = var_CreateGetInteger( p_filter, "rss-length" );
 226     p_sys->i_ttl = __MAX( 0, var_CreateGetInteger( p_filter, "rss-ttl" ) );
 227     p_sys->b_images = var_CreateGetBool( p_filter, "rss-images" );
 228     p_sys->psz_marquee = (char *)malloc( p_sys->i_length );
 229
 230     p_sys->p_style = malloc( sizeof( text_style_t ));
 231     memcpy( p_sys->p_style, &default_text_style, sizeof( text_style_t ));
 232
 233     p_sys->i_xoff = var_CreateGetInteger( p_filter, "rss-x" );
 234     p_sys->i_yoff = var_CreateGetInteger( p_filter, "rss-y" );
 235     p_sys->i_pos = var_CreateGetInteger( p_filter, "rss-position" );
 236     p_sys->p_style->i_font_alpha = 255 - var_CreateGetInteger( p_filter, "rss-opacity" );
 237     p_sys->p_style->i_font_color = var_CreateGetInteger( p_filter, "rss-color" );
 238     p_sys->p_style->i_font_size = var_CreateGetInteger( p_filter, "rss-size" );
 239
 240     if( p_sys->b_images == VLC_TRUE && p_sys->p_style->i_font_size == -1 )
 241     {
 242         msg_Warn( p_filter, "rrs-size wasn't specified. Feed images will thus be displayed without being resized" );
 243     }
 244
 245     if( FetchRSS( p_filter ) )
 246     {
 247         msg_Err( p_filter, "failed while fetching RSS ... too bad" );
 248         vlc_mutex_unlock( &p_sys->lock );
 249         return VLC_EGENERIC;
 250     }
 251     p_sys->t_last_update = time( NULL );
 252
 253     if( p_sys->i_feeds == 0 )
 254     {
 255         vlc_mutex_unlock( &p_sys->lock );
 256         return VLC_EGENERIC;
 257     }
 258     for( i_feed=0; i_feed < p_sys->i_feeds; i_feed ++ )
 259         if( p_sys->p_feeds[i_feed].i_items == 0 )
 260         {
 261             vlc_mutex_unlock( &p_sys->lock );
 262             return VLC_EGENERIC;
 263         }
 264
 265     /* Misc init */
 266     p_filter->pf_sub_filter = Filter;
 267     p_sys->last_date = (mtime_t)0;
 268
 269     vlc_mutex_unlock( &p_sys->lock );
 270
 271     return VLC_SUCCESS;
 272 }
 273 /*****************************************************************************
 274  * DestroyFilter: destroy RSS video filter
 275  *****************************************************************************/
 276 static void DestroyFilter( vlc_object_t *p_this )
 277 {
 278     filter_t *p_filter = (filter_t *)p_this;
 279     filter_sys_t *p_sys = p_filter->p_sys;
 280
 281     vlc_mutex_lock( &p_sys->lock );
 282
 283     if( p_sys->p_style ) free( p_sys->p_style );
 284     if( p_sys->psz_marquee ) free( p_sys->psz_marquee );
 285     free( p_sys->psz_urls );
 286     FreeRSS( p_filter );
 287     vlc_mutex_unlock( &p_sys->lock );
 288     vlc_mutex_destroy( &p_sys->lock );
 289     free( p_sys );
 290
 291     /* Delete the RSS variables */
 292     var_Destroy( p_filter, "rss-urls" );
 293     var_Destroy( p_filter, "rss-speed" );
 294     var_Destroy( p_filter, "rss-length" );
 295     var_Destroy( p_filter, "rss-ttl" );
 296     var_Destroy( p_filter, "rss-images" );
 297     var_Destroy( p_filter, "rss-x" );
 298     var_Destroy( p_filter, "rss-y" );
 299     var_Destroy( p_filter, "rss-position" );
 300     var_Destroy( p_filter, "rss-color");
 301     var_Destroy( p_filter, "rss-opacity");
 302     var_Destroy( p_filter, "rss-size");
 303 }
 304
 305 /****************************************************************************
 306  * Filter: the whole thing
 307  ****************************************************************************
 308  * This function outputs subpictures at regular time intervals.
 309  ****************************************************************************/
 310 static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
 311 {
 312     filter_sys_t *p_sys = p_filter->p_sys;
 313     subpicture_t *p_spu;
 314     video_format_t fmt = {0};
 315
 316     subpicture_region_t *p_region;
 317
 318     int i_feed, i_item;
 319
 320     struct rss_feed_t *p_feed;
 321
 322     vlc_mutex_lock( &p_sys->lock );
 323
 324     if( p_sys->last_date
 325        + ( p_sys->i_cur_char == 0 && p_sys->i_cur_item == 0 ? 5 : 1 )
 326            /* ( ... ? 5 : 1 ) means "wait more for the 1st char" */
 327        * p_sys->i_speed > date )
 328     {
 329         vlc_mutex_unlock( &p_sys->lock );
 330         return NULL;
 331     }
 332
 333     /* Do we need to update the feeds ? */
 334     if( p_sys->i_ttl
 335         && time( NULL ) > p_sys->t_last_update + (time_t)p_sys->i_ttl )
 336     {
 337         msg_Dbg( p_filter, "Forcing update of all the RSS feeds" );
 338         if( FetchRSS( p_filter ) )
 339         {
 340             msg_Err( p_filter, "failed while fetching RSS ... too bad" );
 341             vlc_mutex_unlock( &p_sys->lock );
 342             return NULL; /* FIXME : we most likely messed up all the data,
 343                           * so we might need to do something about it */
 344         }
 345         p_sys->t_last_update = time( NULL );
 346     }
 347
 348     p_sys->last_date = date;
 349     p_sys->i_cur_char++;
 350     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 )
 351     {
 352         p_sys->i_cur_char = 0;
 353         p_sys->i_cur_item++;
 354         if( p_sys->i_cur_item >= p_sys->p_feeds[p_sys->i_cur_feed].i_items )
 355         {
 356             p_sys->i_cur_item = 0;
 357             p_sys->i_cur_feed = (p_sys->i_cur_feed + 1)%p_sys->i_feeds;
 358         }
 359     }
 360
 361     p_spu = p_filter->pf_sub_buffer_new( p_filter );
 362     if( !p_spu )
 363     {
 364         vlc_mutex_unlock( &p_sys->lock );
 365         return NULL;
 366     }
 367
 368     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
 369
 370     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt );
 371     if( !p_spu->p_region )
 372     {
 373         p_filter->pf_sub_buffer_del( p_filter, p_spu );
 374         vlc_mutex_unlock( &p_sys->lock );
 375         return NULL;
 376     }
 377
 378     /* Generate the string that will be displayed. This string is supposed to
 379        be p_sys->i_length characters long. */
 380     i_item = p_sys->i_cur_item;
 381     i_feed = p_sys->i_cur_feed;
 382     p_feed = &p_sys->p_feeds[p_sys->i_cur_feed];
 383
 384     if( p_feed->p_pic )
 385     {
 386         /* Don't display the feed's title if we have an image */
 387         snprintf( p_sys->psz_marquee, p_sys->i_length, "%s",
 388                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title
 389                   +p_sys->i_cur_char );
 390     }
 391     else
 392     {
 393         snprintf( p_sys->psz_marquee, p_sys->i_length, "%s : %s",
 394                   p_sys->p_feeds[i_feed].psz_title,
 395                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title
 396                   +p_sys->i_cur_char );
 397     }
 398
 399     while( strlen( p_sys->psz_marquee ) < (unsigned int)p_sys->i_length )
 400     {
 401         i_item++;
 402         if( i_item == p_sys->p_feeds[i_feed].i_items ) break;
 403         snprintf( strchr( p_sys->psz_marquee, 0 ),
 404                   p_sys->i_length - strlen( p_sys->psz_marquee ),
 405                   " - %s",
 406                   p_sys->p_feeds[i_feed].p_items[i_item].psz_title );
 407     }
 408
 409     /* Calls to snprintf might split multibyte UTF8 chars ...
 410      * which freetype doesn't like. */
 411     {
 412         char *a = strdup( p_sys->psz_marquee );
 413         char *a2 = a;
 414         char *b = p_sys->psz_marquee;
 415         EnsureUTF8( p_sys->psz_marquee );
 416         /* we want to use ' ' instead of '?' for erroneous chars */
 417         while( *b != '\0' )
 418         {
 419             if( *b != *a ) *b = ' ';
 420             b++;a++;
 421         }
 422         free( a2 );
 423     }
 424
 425     p_spu->p_region->psz_text = strdup(p_sys->psz_marquee);
 426     p_spu->i_start = date;
 427     p_spu->i_stop  = 0;
 428     p_spu->b_ephemer = VLC_TRUE;
 429
 430     /*  where to locate the string: */
 431     if( p_sys->i_xoff < 0 || p_sys->i_yoff < 0 )
 432     {   /* set to one of the 9 relative locations */
 433         p_spu->i_flags = p_sys->i_pos;
 434         p_spu->i_x = 0;
 435         p_spu->i_y = 0;
 436         p_spu->b_absolute = VLC_FALSE;
 437     }
 438     else
 439     {   /*  set to an absolute xy, referenced to upper left corner */
 440         p_spu->i_flags = OSD_ALIGN_LEFT | OSD_ALIGN_TOP;
 441         p_spu->i_x = p_sys->i_xoff;
 442         p_spu->i_y = p_sys->i_yoff;
 443         p_spu->b_absolute = VLC_TRUE;
 444     }
 445
 446     p_spu->i_height = 1;
 447     p_spu->p_region->p_style = p_sys->p_style;
 448
 449     if( p_feed->p_pic )
 450     {
 451         /* Display the feed's image */
 452         picture_t *p_pic = p_feed->p_pic;
 453         video_format_t fmt_out = {0};
 454
 455         fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 456         fmt_out.i_aspect = VOUT_ASPECT_FACTOR;
 457         fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
 458         fmt_out.i_width =
 459             fmt_out.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
 460         fmt_out.i_height =
 461             fmt_out.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
 462
 463         p_region = p_spu->pf_create_region( VLC_OBJECT( p_filter ), &fmt_out );
 464         if( !p_region )
 465         {
 466             msg_Err( p_filter, "cannot allocate SPU region" );
 467         }
 468         else
 469         {
 470             vout_CopyPicture( p_filter, &p_region->picture, p_pic );
 471             p_spu->p_region->p_next = p_region;
 472         }
 473
 474         /* Offset text to display right next to the image */
 475         p_spu->p_region->i_x = p_pic->p[Y_PLANE].i_visible_pitch;
 476     }
 477
 478     vlc_mutex_unlock( &p_sys->lock );
 479     return p_spu;
 480 }
 481
 482 /****************************************************************************
 483  * RSS related functions
 484  ****************************************************************************
 485  * You should always lock the p_filter mutex before using any of these
 486  * functions
 487  ***************************************************************************/
 488
 489 #undef LoadImage /* do not conflict with Win32 API */
 490
 491 /****************************************************************************
 492  * download and resize image located at psz_url
 493  ***************************************************************************/
 494 picture_t *LoadImage( filter_t *p_filter, const char *psz_url )
 495 {
 496     filter_sys_t *p_sys = p_filter->p_sys;
 497
 498     video_format_t fmt_in={0}, fmt_out={0};
 499     picture_t *p_orig, *p_pic=NULL;
 500     image_handler_t *p_handler = image_HandlerCreate( p_filter );
 501
 502     char *psz_local;
 503
 504     psz_local = ToLocale( psz_url );
 505     fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
 506     p_orig = image_ReadUrl( p_handler, psz_local, &fmt_in, &fmt_out );
 507     LocaleFree( psz_local );
 508
 509     if( !p_orig )
 510     {
 511         msg_Warn( p_filter, "Unable to read image %s", psz_url );
 512     }
 513     else if( p_sys->p_style->i_font_size > 0 )
 514     {
 515
 516         fmt_in.i_chroma = VLC_FOURCC('Y','U','V','A');
 517         fmt_in.i_height = p_orig->p[Y_PLANE].i_visible_lines;
 518         fmt_in.i_width = p_orig->p[Y_PLANE].i_visible_pitch;
 519         fmt_out.i_width = p_orig->p[Y_PLANE].i_visible_pitch
 520             *p_sys->p_style->i_font_size/p_orig->p[Y_PLANE].i_visible_lines;
 521         fmt_out.i_height = p_sys->p_style->i_font_size;
 522
 523         p_pic = image_Convert( p_handler, p_orig, &fmt_in, &fmt_out );
 524         p_orig->pf_release( p_orig );
 525         if( !p_pic )
 526         {
 527             msg_Warn( p_filter, "Error while converting %s", psz_url );
 528         }
 529     }
 530     else
 531     {
 532         p_pic = p_orig;
 533     }
 534
 535     image_HandlerDelete( p_handler );
 536
 537     return p_pic;
 538 }
 539
 540 /****************************************************************************
 541  * remove all ' ' '\t' '\n' '\r' characters from the begining and end of the
 542  * string.
 543  ***************************************************************************/
 544 char *removeWhiteChars( char *psz_src )
 545 {
 546     char *psz_src2 = strdup( psz_src );
 547     char *psz_clean = strdup( psz_src2 );
 548     char *psz_clean2;
 549     int i;
 550     while( ( *psz_clean == ' ' || *psz_clean == '\t'
 551            || *psz_clean == '\n' || *psz_clean == '\r' )
 552            && *psz_clean != '\0' )
 553     {
 554         psz_clean++;
 555     }
 556     i = strlen( psz_clean );
 557     while( --i > 0 &&
 558          ( psz_clean[i] == ' ' || psz_clean[i] == '\t'
 559         || psz_clean[i] == '\n' || psz_clean[i] == '\r' ) );
 560     psz_clean[i+1] = '\0';
 561     psz_clean2 = strdup( psz_clean );
 562     free( psz_src2 );
 563     return psz_clean2;
 564 }
 565
 566 /****************************************************************************
 567  * FetchRSS (or Atom) feeds
 568  ***************************************************************************/
 569 static int FetchRSS( filter_t *p_filter)
 570 {
 571     filter_sys_t *p_sys = p_filter->p_sys;
 572
 573     stream_t *p_stream = NULL;
 574     xml_t *p_xml = NULL;
 575     xml_reader_t *p_xml_reader = NULL;
 576
 577     char *psz_eltname = NULL;
 578     char *psz_eltvalue = NULL;
 579     char *psz_feed = NULL;
 580     char *psz_buffer = NULL;
 581     char *psz_buffer_2 = NULL;
 582
 583     int i_feed;
 584     int i_item;
 585     vlc_bool_t b_is_item;
 586     vlc_bool_t b_is_image;
 587     int i_int;
 588
 589     FreeRSS( p_filter );
 590     p_sys->i_feeds = 1;
 591     i_int = 0;
 592     while( p_sys->psz_urls[i_int] != 0 )
 593         if( p_sys->psz_urls[i_int++] == '|' )
 594             p_sys->i_feeds++;
 595     p_sys->p_feeds = (struct rss_feed_t *)malloc( p_sys->i_feeds
 596                                 * sizeof( struct rss_feed_t ) );
 597
 598     p_xml = xml_Create( p_filter );
 599     if( !p_xml )
 600     {
 601         msg_Err( p_filter, "Failed to open XML parser" );
 602         return 1;
 603     }
 604
 605     psz_buffer = strdup( p_sys->psz_urls );
 606     psz_buffer_2 = psz_buffer; /* keep track so we can free it */
 607     for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
 608     {
 609         struct rss_feed_t *p_feed = p_sys->p_feeds+i_feed;
 610
 611         if( psz_buffer == NULL ) break;
 612         if( psz_buffer[0] == 0 ) psz_buffer++;
 613         psz_feed = psz_buffer;
 614         psz_buffer = strchr( psz_buffer, '|' );
 615         if( psz_buffer != NULL ) psz_buffer[0] = 0;
 616
 617         p_feed->psz_title = NULL;
 618         p_feed->psz_description = NULL;
 619         p_feed->psz_link = NULL;
 620         p_feed->psz_image = NULL;
 621         p_feed->p_pic = NULL;
 622         p_feed->i_items = 0;
 623         p_feed->p_items = NULL;
 624
 625         msg_Dbg( p_filter, "Opening %s RSS/Atom feed ...", psz_feed );
 626
 627         p_stream = stream_UrlNew( p_filter, psz_feed );
 628         if( !p_stream )
 629         {
 630             msg_Err( p_filter, "Failed to open %s for reading", psz_feed );
 631             return 1;
 632         }
 633
 634         p_xml_reader = xml_ReaderCreate( p_xml, p_stream );
 635         if( !p_xml_reader )
 636         {
 637             msg_Err( p_filter, "Failed to open %s for parsing", psz_feed );
 638             return 1;
 639         }
 640
 641         i_item = 0;
 642         b_is_item = VLC_FALSE;
 643         b_is_image = VLC_FALSE;
 644
 645         while( xml_ReaderRead( p_xml_reader ) == 1 )
 646         {
 647             switch( xml_ReaderNodeType( p_xml_reader ) )
 648             {
 649                 // Error
 650                 case -1:
 651                     return 1;
 652
 653                 case XML_READER_STARTELEM:
 654                     if( psz_eltname )
 655                     {
 656                         free( psz_eltname );
 657                         psz_eltname = NULL;
 658                     }
 659                     psz_eltname = xml_ReaderName( p_xml_reader );
 660                     if( !psz_eltname )
 661                     {
 662                         return 1;
 663                     }
 664 #                   ifdef RSS_DEBUG
 665                     msg_Dbg( p_filter, "element name : %s", psz_eltname );
 666 #                   endif
 667                     if( !strcmp( psz_eltname, "item" ) /* rss */
 668                      || !strcmp( psz_eltname, "entry" ) ) /* atom */
 669                     {
 670                         b_is_item = VLC_TRUE;
 671                         p_feed->i_items++;
 672                         p_feed->p_items = (struct rss_item_t *)realloc( p_feed->p_items, p_feed->i_items * sizeof( struct rss_item_t ) );
 673                         p_feed->p_items[p_feed->i_items-1].psz_title = NULL;
 674                         p_feed->p_items[p_feed->i_items-1].psz_description
 675                                                                      = NULL;
 676                         p_feed->p_items[p_feed->i_items-1].psz_link = NULL;
 677                     }
 678                     else if( !strcmp( psz_eltname, "image" ) ) /* rss */
 679                     {
 680                         b_is_image = VLC_TRUE;
 681                     }
 682                     else if( !strcmp( psz_eltname, "link" ) ) /* atom */
 683                     {
 684                         char *psz_href = NULL;
 685                         char *psz_rel = NULL;
 686                         while( xml_ReaderNextAttr( p_xml_reader )
 687                                == VLC_SUCCESS )
 688                         {
 689                             char *psz_name = xml_ReaderName( p_xml_reader );
 690                             char *psz_value = xml_ReaderValue( p_xml_reader );
 691                             if( !strcmp( psz_name, "rel" ) )
 692                             {
 693                                 psz_rel = psz_value;
 694                             }
 695                             else if( !strcmp( psz_name, "href" ) )
 696                             {
 697                                 psz_href = psz_value;
 698                             }
 699                             else
 700                             {
 701                                 free( psz_value );
 702                             }
 703                             free( psz_name );
 704                         }
 705                         if( psz_rel && psz_href )
 706                         {
 707                             if( !strcmp( psz_rel, "alternate" )
 708                                 && b_is_item == VLC_FALSE
 709                                 && b_is_image == VLC_FALSE
 710                                 && !p_feed->psz_link )
 711                             {
 712                                 p_feed->psz_link = psz_href;
 713                             }
 714                             /* this isn't in the rfc but i found some ... */
 715                             else if( ( !strcmp( psz_rel, "logo" )
 716                                     || !strcmp( psz_rel, "icon" ) )
 717                                     && b_is_item == VLC_FALSE
 718                                     && b_is_image == VLC_FALSE
 719                                     && !p_feed->psz_image )
 720                             {
 721                                 p_feed->psz_image = psz_href;
 722                             }
 723                             else
 724                             {
 725                                 free( psz_href );
 726                             }
 727                         }
 728                         else
 729                         {
 730                             if( psz_href ) free( psz_href );
 731                         }
 732                         if( psz_rel ) free( psz_rel );
 733                     }
 734                     break;
 735
 736                 case XML_READER_ENDELEM:
 737                     if( psz_eltname )
 738                     {
 739                         free( psz_eltname );
 740                         psz_eltname = NULL;
 741                     }
 742                     psz_eltname = xml_ReaderName( p_xml_reader );
 743                     if( !psz_eltname )
 744                     {
 745                         return 1;
 746                     }
 747 #                   ifdef RSS_DEBUG
 748                     msg_Dbg( p_filter, "element end : %s", psz_eltname );
 749 #                   endif
 750                     if( !strcmp( psz_eltname, "item" ) /* rss */
 751                      || !strcmp( psz_eltname, "entry" ) ) /* atom */
 752                     {
 753                         b_is_item = VLC_FALSE;
 754                         i_item++;
 755                     }
 756                     else if( !strcmp( psz_eltname, "image" ) ) /* rss */
 757                     {
 758                         b_is_image = VLC_FALSE;
 759                     }
 760                     free( psz_eltname );
 761                     psz_eltname = NULL;
 762                     break;
 763
 764                 case XML_READER_TEXT:
 765                     if( !psz_eltname ) break;
 766                     psz_eltvalue = xml_ReaderValue( p_xml_reader );
 767                     if( !psz_eltvalue )
 768                     {
 769                         return 1;
 770                     }
 771                     else
 772                     {
 773                         char *psz_clean;
 774                         psz_clean = removeWhiteChars( psz_eltvalue );
 775                         free( psz_eltvalue ); psz_eltvalue = psz_clean;
 776                     }
 777 #                   ifdef RSS_DEBUG
 778                     msg_Dbg( p_filter, "  text : <%s>", psz_eltvalue );
 779 #                   endif
 780                     if( b_is_item == VLC_TRUE )
 781                     {
 782                         struct rss_item_t *p_item;
 783                         p_item = p_feed->p_items+i_item;
 784                         if( !strcmp( psz_eltname, "title" ) /* rss/atom */
 785                             && !p_item->psz_title )
 786                         {
 787                             p_item->psz_title = psz_eltvalue;
 788                         }
 789                         else if( !strcmp( psz_eltname, "link" ) /* rss */
 790                                  && !p_item->psz_link )
 791                         {
 792                             p_item->psz_link = psz_eltvalue;
 793                         }
 794                         else if((!strcmp( psz_eltname, "description" ) /* rss */
 795                               || !strcmp( psz_eltname, "summary" ) ) /* atom */
 796                               && !p_item->psz_description )
 797                         {
 798                             p_item->psz_description = psz_eltvalue;
 799                         }
 800                         else
 801                         {
 802                             free( psz_eltvalue );
 803                             psz_eltvalue = NULL;
 804                         }
 805                     }
 806                     else if( b_is_image == VLC_TRUE )
 807                     {
 808                         if( !strcmp( psz_eltname, "url" ) /* rss */
 809                             && !p_feed->psz_image )
 810                         {
 811                             p_feed->psz_image = psz_eltvalue;
 812                         }
 813                         else
 814                         {
 815                             free( psz_eltvalue );
 816                             psz_eltvalue = NULL;
 817                         }
 818                     }
 819                     else
 820                     {
 821                         if( !strcmp( psz_eltname, "title" ) /* rss/atom */
 822                             && !p_feed->psz_title )
 823                         {
 824                             p_feed->psz_title = psz_eltvalue;
 825                         }
 826                         else if( !strcmp( psz_eltname, "link" ) /* rss */
 827                                  && !p_feed->psz_link )
 828                         {
 829                             p_feed->psz_link = psz_eltvalue;
 830                         }
 831                         else if((!strcmp( psz_eltname, "description" ) /* rss */
 832                               || !strcmp( psz_eltname, "subtitle" ) ) /* atom */
 833                               && !p_feed->psz_description )
 834                         {
 835                             p_feed->psz_description = psz_eltvalue;
 836                         }
 837                         else if( ( !strcmp( psz_eltname, "logo" ) /* atom */
 838                               || !strcmp( psz_eltname, "icon" ) ) /* atom */
 839                               && !p_feed->psz_image )
 840                         {
 841                             p_feed->psz_image = psz_eltvalue;
 842                         }
 843                         else
 844                         {
 845                             free( psz_eltvalue );
 846                             psz_eltvalue = NULL;
 847                         }
 848                     }
 849                     break;
 850             }
 851         }
 852
 853         if( p_sys->b_images == VLC_TRUE
 854             && p_feed->psz_image && !p_feed->p_pic )
 855         {
 856             p_feed->p_pic = LoadImage( p_filter, p_feed->psz_image );
 857         }
 858
 859         if( p_xml_reader && p_xml ) xml_ReaderDelete( p_xml, p_xml_reader );
 860         if( p_stream ) stream_Delete( p_stream );
 861         msg_Dbg( p_filter, "Done with %s RSS/Atom feed.", psz_feed );
 862     }
 863     free( psz_buffer_2 );
 864     if( p_xml ) xml_Delete( p_xml );
 865
 866     return 0;
 867 }
 868
 869 /****************************************************************************
 870  * FreeRSS
 871  ***************************************************************************/
 872 static void FreeRSS( filter_t *p_filter)
 873 {
 874     filter_sys_t *p_sys = p_filter->p_sys;
 875
 876     struct rss_item_t *p_item;
 877     struct rss_feed_t *p_feed;
 878
 879     int i_feed;
 880     int i_item;
 881
 882     for( i_feed = 0; i_feed < p_sys->i_feeds; i_feed++ )
 883     {
 884         p_feed = p_sys->p_feeds+i_feed;
 885         for( i_item = 0; i_item < p_feed->i_items; i_item++ )
 886         {
 887             p_item = p_feed->p_items+i_item;
 888             free( p_item->psz_title );
 889             free( p_item->psz_link );
 890             free( p_item->psz_description );
 891         }
 892         free( p_feed->p_items );
 893         free( p_feed->psz_title);
 894         free( p_feed->psz_link );
 895         free( p_feed->psz_description );
 896         free( p_feed->psz_image );
 897         if( p_feed->p_pic != NULL )
 898             p_feed->p_pic->pf_release( p_feed->p_pic );
 899     }
 900     free( p_sys->p_feeds );
 901     p_sys->i_feeds = 0;
 902 }