* subsusf.c : USF subtitles decoder
*****************************************************************************
* Copyright (C) 2000-2006 the VideoLAN team
- * $Id: subsdec.c 20996 2007-08-05 20:01:21Z jb $
+ * $Id$
*
- * Authors: Gildas Bazin <gbazin@videolan.org>
- * Samuel Hocevar <sam@zoy.org>
- * Derk-Jan Hartman <hartman at videolan dot org>
- * Bernie Purcell <b dot purcell at adbglobal dot com>
+ * Authors: Bernie Purcell <bitmap@videolan.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
#include "subsdec.h"
+#include <vlc_plugin.h>
+#include <assert.h>
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int OpenDecoder ( vlc_object_t * );
+static void CloseDecoder ( vlc_object_t * );
+
+static subpicture_t *DecodeBlock ( decoder_t *, block_t ** );
+static char *CreatePlainText( char * );
+static int ParseImageAttachments( decoder_t *p_dec );
+
+static subpicture_t *ParseText ( decoder_t *, block_t * );
+static void ParseUSFHeader( decoder_t * );
+static subpicture_region_t *ParseUSFString( decoder_t *, char *, subpicture_t * );
+static subpicture_region_t *LoadEmbeddedImage( decoder_t *p_dec, subpicture_t *p_spu, const char *psz_filename, int i_transparent_color );
+
+/*****************************************************************************
+ * Module descriptor.
+ *****************************************************************************/
+
+vlc_module_begin ()
+ set_capability( "decoder", 40 )
+ set_shortname( N_("USFSubs"))
+ set_description( N_("USF subtitles decoder") )
+ set_callbacks( OpenDecoder, CloseDecoder )
+ set_category( CAT_INPUT )
+ set_subcategory( SUBCAT_INPUT_SCODEC )
+ /* We inherit subsdec-align and subsdec-formatted from subsdec.c */
+vlc_module_end ()
+
+/*****************************************************************************
+ * OpenDecoder: probe the decoder and return score
+ *****************************************************************************
+ * Tries to launch a decoder and return score so that the interface is able
+ * to chose.
+ *****************************************************************************/
+static int OpenDecoder( vlc_object_t *p_this )
+{
+ decoder_t *p_dec = (decoder_t*)p_this;
+ decoder_sys_t *p_sys;
+
+ if( p_dec->fmt_in.i_codec != VLC_FOURCC('u','s','f',' ') )
+ return VLC_EGENERIC;
+
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_dec->p_sys = p_sys = calloc(1, sizeof(decoder_sys_t)) ) == NULL )
+ return VLC_ENOMEM;
+
+ p_dec->pf_decode_sub = DecodeBlock;
+ p_dec->fmt_out.i_cat = SPU_ES;
+ p_dec->fmt_out.i_codec = 0;
+
+ /* Unused fields of p_sys - not needed for USF decoding */
+ p_sys->b_ass = false;
+ p_sys->iconv_handle = (vlc_iconv_t)-1;
+ p_sys->b_autodetect_utf8 = false;
+
+ /* init of p_sys */
+ p_sys->i_align = 0;
+ p_sys->i_original_height = 0;
+ p_sys->i_original_width = 0;
+ TAB_INIT( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
+ TAB_INIT( p_sys->i_images, p_sys->pp_images );
+
+ /* USF subtitles are mandated to be UTF-8, so don't need vlc_iconv */
+
+ p_sys->i_align = var_CreateGetInteger( p_dec, "subsdec-align" );
+
+ ParseImageAttachments( p_dec );
+
+ if( var_CreateGetBool( p_dec, "subsdec-formatted" ) )
+ {
+ if( p_dec->fmt_in.i_extra > 0 )
+ ParseUSFHeader( p_dec );
+ }
+
+ return VLC_SUCCESS;
+}
+
+/****************************************************************************
+ * DecodeBlock: the whole thing
+ ****************************************************************************
+ * This function must be fed with complete subtitles units.
+ ****************************************************************************/
+static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
+{
+ subpicture_t *p_spu;
+ block_t *p_block;
+
+ if( !pp_block || *pp_block == NULL )
+ return NULL;
+
+ p_block = *pp_block;
+
+ p_spu = ParseText( p_dec, p_block );
+
+ block_Release( p_block );
+ *pp_block = NULL;
+
+ return p_spu;
+}
+
+/*****************************************************************************
+ * CloseDecoder: clean up the decoder
+ *****************************************************************************/
+static void CloseDecoder( vlc_object_t *p_this )
+{
+ decoder_t *p_dec = (decoder_t *)p_this;
+ decoder_sys_t *p_sys = p_dec->p_sys;
+
+ if( p_sys->pp_ssa_styles )
+ {
+ int i;
+ for( i = 0; i < p_sys->i_ssa_styles; i++ )
+ {
+ if( !p_sys->pp_ssa_styles[i] )
+ continue;
+
+ free( p_sys->pp_ssa_styles[i]->psz_stylename );
+ free( p_sys->pp_ssa_styles[i]->font_style.psz_fontname );
+ free( p_sys->pp_ssa_styles[i] );
+ }
+ TAB_CLEAN( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
+ }
+ if( p_sys->pp_images )
+ {
+ int i;
+ for( i = 0; i < p_sys->i_images; i++ )
+ {
+ if( !p_sys->pp_images[i] )
+ continue;
+
+ if( p_sys->pp_images[i]->p_pic )
+ picture_Release( p_sys->pp_images[i]->p_pic );
+ free( p_sys->pp_images[i]->psz_filename );
+
+ free( p_sys->pp_images[i] );
+ }
+ TAB_CLEAN( p_sys->i_images, p_sys->pp_images );
+ }
+
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * ParseText: parse an text subtitle packet and send it to the video output
+ *****************************************************************************/
+static subpicture_t *ParseText( decoder_t *p_dec, block_t *p_block )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ subpicture_t *p_spu = NULL;
+ char *psz_subtitle = NULL;
+
+ /* We cannot display a subpicture with no date */
+ if( p_block->i_pts == 0 )
+ {
+ msg_Warn( p_dec, "subtitle without a date" );
+ return NULL;
+ }
+
+ /* Check validity of packet data */
+ /* An "empty" line containing only \0 can be used to force
+ and ephemer picture from the screen */
+ if( p_block->i_buffer < 1 )
+ {
+ msg_Warn( p_dec, "no subtitle data" );
+ return NULL;
+ }
+
+ /* Should be resiliant against bad subtitles */
+ psz_subtitle = strndup( (const char *)p_block->p_buffer,
+ p_block->i_buffer );
+ if( psz_subtitle == NULL )
+ return NULL;
+
+ /* USF Subtitles are mandated to be UTF-8 -- make sure it is */
+ if (EnsureUTF8( psz_subtitle ) == NULL)
+ {
+ msg_Err( p_dec, "USF subtitles must be in UTF-8 format.\n"
+ "This stream contains USF subtitles which aren't." );
+ }
+
+ /* Create the subpicture unit */
+ p_spu = decoder_NewSubpicture( p_dec );
+ if( !p_spu )
+ {
+ msg_Warn( p_dec, "can't get spu buffer" );
+ free( psz_subtitle );
+ return NULL;
+ }
+
+ /* Decode USF strings */
+ p_spu->p_region = ParseUSFString( p_dec, psz_subtitle, p_spu );
+
+ p_spu->i_start = p_block->i_pts;
+ p_spu->i_stop = p_block->i_pts + p_block->i_length;
+ p_spu->b_ephemer = (p_block->i_length == 0);
+ p_spu->b_absolute = false;
+ p_spu->i_original_picture_width = p_sys->i_original_width;
+ p_spu->i_original_picture_height = p_sys->i_original_height;
+
+ free( psz_subtitle );
+
+ return p_spu;
+}
+
+static char *GrabAttributeValue( const char *psz_attribute,
+ const char *psz_tag_start )
+{
+ if( psz_attribute && psz_tag_start )
+ {
+ char *psz_tag_end = strchr( psz_tag_start, '>' );
+ char *psz_found = strcasestr( psz_tag_start, psz_attribute );
+
+ if( psz_found )
+ {
+ psz_found += strlen( psz_attribute );
+
+ if(( *(psz_found++) == '=' ) &&
+ ( *(psz_found++) == '\"' ))
+ {
+ if( psz_found < psz_tag_end )
+ {
+ int i_len = strcspn( psz_found, "\"" );
+ return strndup( psz_found, i_len );
+ }
+ }
+ }
+ }
+ return NULL;
+}
+
+static ssa_style_t *ParseStyle( decoder_sys_t *p_sys, char *psz_subtitle )
+{
+ ssa_style_t *p_style = NULL;
+ char *psz_style = GrabAttributeValue( "style", psz_subtitle );
+
+ if( psz_style )
+ {
+ int i;
+
+ for( i = 0; i < p_sys->i_ssa_styles; i++ )
+ {
+ if( !strcmp( p_sys->pp_ssa_styles[i]->psz_stylename, psz_style ) )
+ p_style = p_sys->pp_ssa_styles[i];
+ }
+ free( psz_style );
+ }
+ return p_style;
+}
+
+static int ParsePositionAttributeList( char *psz_subtitle, int *i_align,
+ int *i_x, int *i_y )
+{
+ int i_mask = 0;
+
+ char *psz_align = GrabAttributeValue( "alignment", psz_subtitle );
+ char *psz_margin_x = GrabAttributeValue( "horizontal-margin", psz_subtitle );
+ char *psz_margin_y = GrabAttributeValue( "vertical-margin", psz_subtitle );
+ /* -- UNSUPPORTED
+ char *psz_relative = GrabAttributeValue( "relative-to", psz_subtitle );
+ char *psz_rotate_x = GrabAttributeValue( "rotate-x", psz_subtitle );
+ char *psz_rotate_y = GrabAttributeValue( "rotate-y", psz_subtitle );
+ char *psz_rotate_z = GrabAttributeValue( "rotate-z", psz_subtitle );
+ */
+
+ *i_align = SUBPICTURE_ALIGN_BOTTOM;
+ *i_x = 0;
+ *i_y = 0;
+
+ if( psz_align )
+ {
+ if( !strcasecmp( "TopLeft", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT;
+ else if( !strcasecmp( "TopCenter", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_TOP;
+ else if( !strcasecmp( "TopRight", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_RIGHT;
+ else if( !strcasecmp( "MiddleLeft", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_LEFT;
+ else if( !strcasecmp( "MiddleCenter", psz_align ) )
+ *i_align = 0;
+ else if( !strcasecmp( "MiddleRight", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_RIGHT;
+ else if( !strcasecmp( "BottomLeft", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_LEFT;
+ else if( !strcasecmp( "BottomCenter", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_BOTTOM;
+ else if( !strcasecmp( "BottomRight", psz_align ) )
+ *i_align = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_RIGHT;
+
+ i_mask |= ATTRIBUTE_ALIGNMENT;
+ free( psz_align );
+ }
+ if( psz_margin_x )
+ {
+ *i_x = atoi( psz_margin_x );
+ if( strchr( psz_margin_x, '%' ) )
+ i_mask |= ATTRIBUTE_X_PERCENT;
+ else
+ i_mask |= ATTRIBUTE_X;
+
+ free( psz_margin_x );
+ }
+ if( psz_margin_y )
+ {
+ *i_y = atoi( psz_margin_y );
+ if( strchr( psz_margin_y, '%' ) )
+ i_mask |= ATTRIBUTE_Y_PERCENT;
+ else
+ i_mask |= ATTRIBUTE_Y;
+
+ free( psz_margin_y );
+ }
+ return i_mask;
+}
+
+static void SetupPositions( subpicture_region_t *p_region, char *psz_subtitle )
+{
+ int i_mask = 0;
+ int i_align;
+ int i_x, i_y;
+
+ i_mask = ParsePositionAttributeList( psz_subtitle, &i_align, &i_x, &i_y );
+
+ if( i_mask & ATTRIBUTE_ALIGNMENT )
+ p_region->i_align = i_align;
+
+ /* TODO: Setup % based offsets properly, without adversely affecting
+ * everything else in vlc. Will address with separate patch, to
+ * prevent this one being any more complicated.
+ */
+ if( i_mask & ATTRIBUTE_X )
+ p_region->i_x = i_x;
+ else if( i_mask & ATTRIBUTE_X_PERCENT )
+ p_region->i_x = 0;
+
+ if( i_mask & ATTRIBUTE_Y )
+ p_region->i_y = i_y;
+ else if( i_mask & ATTRIBUTE_Y_PERCENT )
+ p_region->i_y = 0;
+}
+
+static subpicture_region_t *CreateTextRegion( decoder_t *p_dec,
+ subpicture_t *p_spu,
+ char *psz_subtitle,
+ int i_len,
+ int i_sys_align )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ subpicture_region_t *p_text_region;
+ video_format_t fmt;
+
+ /* Create a new subpicture region */
+ memset( &fmt, 0, sizeof(video_format_t) );
+ fmt.i_chroma = VLC_FOURCC('T','E','X','T');
+ fmt.i_aspect = 0;
+ fmt.i_width = fmt.i_height = 0;
+ fmt.i_x_offset = fmt.i_y_offset = 0;
+ p_text_region = subpicture_region_New( &fmt );
+
+ if( p_text_region != NULL )
+ {
+ ssa_style_t *p_style = NULL;
+
+ p_text_region->psz_text = NULL;
+ p_text_region->psz_html = strndup( psz_subtitle, i_len );
+ if( ! p_text_region->psz_html )
+ {
+ subpicture_region_Delete( p_text_region );
+ return NULL;
+ }
+
+ p_style = ParseStyle( p_sys, p_text_region->psz_html );
+ if( !p_style )
+ {
+ int i;
+
+ for( i = 0; i < p_sys->i_ssa_styles; i++ )
+ {
+ if( !strcasecmp( p_sys->pp_ssa_styles[i]->psz_stylename, "Default" ) )
+ p_style = p_sys->pp_ssa_styles[i];
+ }
+ }
+
+ if( p_style )
+ {
+ msg_Dbg( p_dec, "style is: %s", p_style->psz_stylename );
+
+ p_text_region->p_style = &p_style->font_style;
+ p_text_region->i_align = p_style->i_align;
+
+ /* TODO: Setup % based offsets properly, without adversely affecting
+ * everything else in vlc. Will address with separate patch,
+ * to prevent this one being any more complicated.
+
+ * p_style->i_margin_percent_h;
+ * p_style->i_margin_percent_v;
+ */
+ p_text_region->i_x = p_style->i_margin_h;
+ p_text_region->i_y = p_style->i_margin_v;
+
+ }
+ else
+ {
+ p_text_region->i_align = SUBPICTURE_ALIGN_BOTTOM | i_sys_align;
+ p_text_region->i_x = i_sys_align ? 20 : 0;
+ p_text_region->i_y = 10;
+ }
+ /* Look for position arguments which may override the style-based
+ * defaults.
+ */
+ SetupPositions( p_text_region, psz_subtitle );
+
+ p_text_region->p_next = NULL;
+ }
+ return p_text_region;
+}
+
+static int ParseImageAttachments( decoder_t *p_dec )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ input_attachment_t **pp_attachments;
+ int i_attachments_cnt;
+ int k = 0;
+
+ if( VLC_SUCCESS != decoder_GetInputAttachments( p_dec, &pp_attachments, &i_attachments_cnt ))
+ return VLC_EGENERIC;
+
+ for( k = 0; k < i_attachments_cnt; k++ )
+ {
+ input_attachment_t *p_attach = pp_attachments[k];
+
+ vlc_fourcc_t type = image_Mime2Fourcc( p_attach->psz_mime );
+
+ if( ( type != 0 ) &&
+ ( p_attach->i_data > 0 ) &&
+ ( p_attach->p_data != NULL ) )
+ {
+ picture_t *p_pic = NULL;
+ image_handler_t *p_image;
+
+ p_image = image_HandlerCreate( p_dec );
+ if( p_image != NULL )
+ {
+ block_t *p_block;
+
+ p_block = block_New( p_image->p_parent, p_attach->i_data );
+
+ if( p_block != NULL )
+ {
+ video_format_t fmt_in;
+ video_format_t fmt_out;
+
+ memcpy( p_block->p_buffer, p_attach->p_data, p_attach->i_data );
+
+ memset( &fmt_in, 0, sizeof( video_format_t));
+ memset( &fmt_out, 0, sizeof( video_format_t));
+
+ fmt_in.i_chroma = type;
+ fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
+
+ /* Find a suitable decoder module */
+ if( module_exists( "sdl_image" ) )
+ {
+ /* ffmpeg thinks it can handle bmp properly but it can't (at least
+ * not all of them), so use sdl_image if it is available */
+
+ vlc_value_t val;
+
+ var_Create( p_dec, "codec", VLC_VAR_MODULE | VLC_VAR_DOINHERIT );
+ val.psz_string = (char*) "sdl_image";
+ var_Set( p_dec, "codec", val );
+ }
+
+ p_pic = image_Read( p_image, p_block, &fmt_in, &fmt_out );
+ var_Destroy( p_dec, "codec" );
+ }
+
+ image_HandlerDelete( p_image );
+ }
+ if( p_pic )
+ {
+ image_attach_t *p_picture = malloc( sizeof(image_attach_t) );
+
+ if( p_picture )
+ {
+ p_picture->psz_filename = strdup( p_attach->psz_name );
+ p_picture->p_pic = p_pic;
+
+ TAB_APPEND( p_sys->i_images, p_sys->pp_images, p_picture );
+ }
+ }
+ }
+ vlc_input_attachment_Delete( pp_attachments[ k ] );
+ }
+ free( pp_attachments );
+
+ return VLC_SUCCESS;
+}
static void ParseUSFHeaderTags( decoder_t *p_dec, xml_reader_t *p_xml_reader )
{
else if( !strcasecmp( "y", psz_name ) )
p_sys->i_original_height = atoi( psz_value );
}
- if( psz_name ) free( psz_name );
- if( psz_value ) free( psz_value );
+ free( psz_name );
+ free( psz_value );
}
}
else if( !strcasecmp( "styles", psz_node ) && (i_style_level == 0) )
p_style = calloc( 1, sizeof(ssa_style_t) );
if( ! p_style )
{
- msg_Err( p_dec, "out of memory" );
free( psz_node );
- break;
+ return;
}
/* All styles are supposed to default to Default, and then
* one or more settings are over-ridden.
if( !strcasecmp( "name", psz_name ) )
p_style->psz_stylename = strdup( psz_value);
}
- if( psz_name ) free( psz_name );
- if( psz_value ) free( psz_value );
+ free( psz_name );
+ free( psz_value );
}
}
else if( !strcasecmp( "fontstyle", psz_node ) && (i_style_level == 2) )
{
if( !strcasecmp( "face", psz_name ) )
{
- if( p_style->font_style.psz_fontname )
- free( p_style->font_style.psz_fontname );
+ free( p_style->font_style.psz_fontname );
p_style->font_style.psz_fontname = strdup( psz_value );
}
else if( !strcasecmp( "size", psz_name ) )
p_style->font_style.i_spacing = atoi( psz_value );
}
}
- if( psz_name ) free( psz_name );
- if( psz_value ) free( psz_value );
+ free( psz_name );
+ free( psz_value );
}
}
else if( !strcasecmp( "position", psz_node ) && (i_style_level == 2) )
}
}
}
- if( psz_name ) free( psz_name );
- if( psz_value ) free( psz_value );
+ free( psz_name );
+ free( psz_value );
}
}
break;
}
}
- if( p_style ) free( p_style );
+ free( p_style );
}
-subpicture_region_t *ParseUSFString( decoder_t *p_dec,
- char *psz_subtitle,
- subpicture_t *p_spu_in )
+static subpicture_region_t *ParseUSFString( decoder_t *p_dec,
+ char *psz_subtitle,
+ subpicture_t *p_spu_in )
{
decoder_sys_t *p_sys = p_dec->p_sys;
subpicture_t *p_spu = p_spu_in;
/*****************************************************************************
* ParseUSFHeader: Retrieve global formatting information etc
*****************************************************************************/
-void ParseUSFHeader( decoder_t *p_dec )
+static void ParseUSFHeader( decoder_t *p_dec )
{
stream_t *p_sub = NULL;
xml_t *p_xml = NULL;
p_sub = stream_MemoryNew( VLC_OBJECT(p_dec),
p_dec->fmt_in.p_extra,
p_dec->fmt_in.i_extra,
- VLC_TRUE );
+ true );
if( !p_sub )
return;
stream_Delete( p_sub );
}
+/* Function now handles tags which has attribute values, and tries
+ * to deal with &' commands too. It no longer modifies the string
+ * in place, so that the original text can be reused
+ */
+static char *StripTags( char *psz_subtitle )
+{
+ char *psz_text_start;
+ char *psz_text;
+
+ psz_text = psz_text_start = malloc( strlen( psz_subtitle ) + 1 );
+ if( !psz_text_start )
+ return NULL;
+
+ while( *psz_subtitle )
+ {
+ /* Mask out any pre-existing LFs in the subtitle */
+ if( *psz_subtitle == '\n' )
+ *psz_subtitle = ' ';
+
+ if( *psz_subtitle == '<' )
+ {
+ if( strncasecmp( psz_subtitle, "<br/>", 5 ) == 0 )
+ *psz_text++ = '\n';
+
+ psz_subtitle += strcspn( psz_subtitle, ">" );
+ }
+ else if( *psz_subtitle == '&' )
+ {
+ if( !strncasecmp( psz_subtitle, "<", 4 ))
+ {
+ *psz_text++ = '<';
+ psz_subtitle += strcspn( psz_subtitle, ";" );
+ }
+ else if( !strncasecmp( psz_subtitle, ">", 4 ))
+ {
+ *psz_text++ = '>';
+ psz_subtitle += strcspn( psz_subtitle, ";" );
+ }
+ else if( !strncasecmp( psz_subtitle, "&", 5 ))
+ {
+ *psz_text++ = '&';
+ psz_subtitle += strcspn( psz_subtitle, ";" );
+ }
+ else if( !strncasecmp( psz_subtitle, """, 6 ))
+ {
+ *psz_text++ = '\"';
+ psz_subtitle += strcspn( psz_subtitle, ";" );
+ }
+ else
+ {
+ /* Assume it is just a normal ampersand */
+ *psz_text++ = '&';
+ }
+ }
+ else
+ {
+ *psz_text++ = *psz_subtitle;
+ }
+
+ psz_subtitle++;
+ }
+ *psz_text = '\0';
+ psz_text_start = realloc( psz_text_start, strlen( psz_text_start ) + 1 );
+
+ return psz_text_start;
+}
+
+/* Turn a HTML subtitle, turn into a plain-text version,
+ * complete with sensible whitespace compaction
+ */
+
+static char *CreatePlainText( char *psz_subtitle )
+{
+ char *psz_text = StripTags( psz_subtitle );
+ char *s;
+
+ if( !psz_text )
+ return NULL;
+
+ s = strpbrk( psz_text, "\t\r\n " );
+ while( s )
+ {
+ int k;
+ char spc = ' ';
+ int i_whitespace = strspn( s, "\t\r\n " );
+
+ /* Favour '\n' over other whitespaces - if one of these
+ * occurs in the whitespace use a '\n' as our value,
+ * otherwise just use a ' '
+ */
+ for( k = 0; k < i_whitespace; k++ )
+ if( s[k] == '\n' ) spc = '\n';
+ if( i_whitespace > 1 )
+ {
+ memmove( &s[1],
+ &s[i_whitespace],
+ strlen( s ) - i_whitespace + 1 );
+ }
+ *s++ = spc;
+
+ s = strpbrk( s, "\t\r\n " );
+ }
+ return psz_text;
+}
+
+/****************************************************************************
+ * download and resize image located at psz_url
+ ***************************************************************************/
+static subpicture_region_t *LoadEmbeddedImage( decoder_t *p_dec,
+ subpicture_t *p_spu,
+ const char *psz_filename,
+ int i_transparent_color )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ subpicture_region_t *p_region;
+ video_format_t fmt_out;
+ int k;
+ picture_t *p_pic = NULL;
+
+ for( k = 0; k < p_sys->i_images; k++ )
+ {
+ if( p_sys->pp_images &&
+ !strcmp( p_sys->pp_images[k]->psz_filename, psz_filename ) )
+ {
+ p_pic = p_sys->pp_images[k]->p_pic;
+ break;
+ }
+ }
+
+ if( !p_pic )
+ {
+ msg_Err( p_dec, "Unable to read image %s", psz_filename );
+ return NULL;
+ }
+
+ /* Display the feed's image */
+ memset( &fmt_out, 0, sizeof( video_format_t));
+
+ fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
+ fmt_out.i_aspect = VOUT_ASPECT_FACTOR;
+ fmt_out.i_sar_num = fmt_out.i_sar_den = 1;
+ fmt_out.i_width =
+ fmt_out.i_visible_width = p_pic->format.i_visible_width;
+ fmt_out.i_height =
+ fmt_out.i_visible_height = p_pic->format.i_visible_height;
+
+ p_region = subpicture_region_New( &fmt_out );
+ if( !p_region )
+ {
+ msg_Err( p_dec, "cannot allocate SPU region" );
+ return NULL;
+ }
+ assert( p_pic->format.i_chroma == VLC_FOURCC('Y','U','V','A') );
+ /* FIXME the copy is probably not needed anymore */
+ picture_CopyPixels( p_region->p_picture, p_pic );
+
+ /* This isn't the best way to do this - if you really want transparency, then
+ * you're much better off using an image type that supports it like PNG. The
+ * spec requires this support though.
+ */
+ if( i_transparent_color > 0 )
+ {
+ int i_r = ( i_transparent_color >> 16 ) & 0xff;
+ int i_g = ( i_transparent_color >> 8 ) & 0xff;
+ int i_b = ( i_transparent_color ) & 0xff;
+
+ /* FIXME it cannot work as the yuv conversion code will probably NOT match
+ * this one */
+ int i_y = ( ( ( 66 * i_r + 129 * i_g + 25 * i_b + 128 ) >> 8 ) + 16 );
+ int i_u = ( ( -38 * i_r - 74 * i_g + 112 * i_b + 128 ) >> 8 ) + 128 ;
+ int i_v = ( ( 112 * i_r - 94 * i_g - 18 * i_b + 128 ) >> 8 ) + 128 ;
+
+ assert( p_region->fmt.i_chroma == VLC_FOURCC('Y','U','V','A') );
+ for( unsigned int y = 0; y < p_region->fmt.i_height; y++ )
+ {
+ for( unsigned int x = 0; x < p_region->fmt.i_width; x++ )
+ {
+ if( p_region->p_picture->Y_PIXELS[y*p_region->p_picture->Y_PITCH + x] != i_y ||
+ p_region->p_picture->U_PIXELS[y*p_region->p_picture->U_PITCH + x] != i_u ||
+ p_region->p_picture->V_PIXELS[y*p_region->p_picture->V_PITCH + x] != i_v )
+ continue;
+ p_region->p_picture->A_PIXELS[y*p_region->p_picture->A_PITCH + x] = 0;
+
+ }
+ }
+ }
+ return p_region;
+}
projects / vlc / blobdiff