* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
+#include <vlc_memory.h>
+
typedef struct font_stack_t font_stack_t;
struct font_stack_t
{
font_stack_t *p_next;
};
+static void SetupLine( filter_t *p_filter, const char *psz_text_in,
+ UCHAR **psz_text_out, uint32_t *pi_runs,
+ uint32_t **ppi_run_lengths, TR_FONT_STYLE_PTR **ppp_styles,
+ TR_FONT_STYLE_PTR p_style );
+
+static TR_FONT_STYLE_PTR GetStyleFromFontStack( filter_sys_t *p_sys,
+ font_stack_t **p_fonts, bool b_bold, bool b_italic,
+ bool b_uline, bool b_through );
+
static int PushFont( font_stack_t **p_font, const char *psz_name, int i_size,
uint32_t i_color, uint32_t i_karaoke_bg_color )
{
return rv;
}
+static void SetKaraokeLen( uint32_t i_runs, uint32_t *pi_run_lengths,
+ uint32_t i_k_runs, uint32_t *pi_k_run_lengths )
+{
+ /* Karaoke tags _PRECEDE_ the text they specify a duration
+ * for, therefore we are working out the length for the
+ * previous tag, and first time through we have nothing
+ */
+ if( pi_k_run_lengths )
+ {
+ int i_chars = 0;
+ uint32_t i;
+
+ /* Work out how many characters are presently in the string
+ */
+ for( i = 0; i < i_runs; i++ )
+ i_chars += pi_run_lengths[ i ];
+
+ /* Subtract away those we've already allocated to other
+ * karaoke tags
+ */
+ for( i = 0; i < i_k_runs; i++ )
+ i_chars -= pi_k_run_lengths[ i ];
+
+ pi_k_run_lengths[ i_k_runs - 1 ] = i_chars;
+ }
+}
+
+static void SetupKaraoke( xml_reader_t *p_xml_reader, uint32_t *pi_k_runs,
+ uint32_t **ppi_k_run_lengths,
+ uint32_t **ppi_k_durations )
+{
+ while ( xml_ReaderNextAttr( p_xml_reader ) == VLC_SUCCESS )
+ {
+ char *psz_name = xml_ReaderName( p_xml_reader );
+ char *psz_value = xml_ReaderValue( p_xml_reader );
+
+ if( psz_name && psz_value &&
+ !strcasecmp( "t", psz_name ) )
+ {
+ if( ppi_k_durations && ppi_k_run_lengths )
+ {
+ (*pi_k_runs)++;
+
+ if( *ppi_k_durations )
+ {
+ *ppi_k_durations = realloc_or_free( *ppi_k_durations,
+ *pi_k_runs * sizeof( uint32_t ) );
+ }
+ else if( *pi_k_runs == 1 )
+ {
+ *ppi_k_durations = (uint32_t *)
+ malloc( *pi_k_runs * sizeof( uint32_t ) );
+ }
+
+ if( *ppi_k_run_lengths )
+ {
+ *ppi_k_run_lengths = realloc_or_free( *ppi_k_run_lengths,
+ *pi_k_runs * sizeof( uint32_t ) );
+ }
+ else if( *pi_k_runs == 1 )
+ {
+ *ppi_k_run_lengths = (uint32_t *)
+ malloc( *pi_k_runs * sizeof( uint32_t ) );
+ }
+ if( *ppi_k_durations )
+ (*ppi_k_durations)[ *pi_k_runs - 1 ] = atoi( psz_value );
+
+ if( *ppi_k_run_lengths )
+ (*ppi_k_run_lengths)[ *pi_k_runs - 1 ] = 0;
+ }
+ }
+ free( psz_name );
+ free( psz_value );
+ }
+}
+
+/* Turn any multiple-whitespaces into single spaces */
+static void HandleWhiteSpace( char *psz_node )
+{
+ char *s = strpbrk( psz_node, "\t\r\n " );
+ while( s )
+ {
+ int i_whitespace = strspn( s, "\t\r\n " );
+
+ if( i_whitespace > 1 )
+ memmove( &s[1],
+ &s[i_whitespace],
+ strlen( s ) - i_whitespace + 1 );
+ *s++ = ' ';
+
+ s = strpbrk( s, "\t\r\n " );
+ }
+}
+
+/* */
+static int ProcessNodes( filter_t *p_filter,
+ xml_reader_t *p_xml_reader,
+ text_style_t *p_font_style,
+ UCHAR *psz_text,
+ int *pi_len,
+
+ uint32_t *pi_runs,
+ uint32_t **ppi_run_lengths,
+ TR_FONT_STYLE_PTR **ppp_styles,
+
+ bool b_karaoke,
+ uint32_t *pi_k_runs,
+ uint32_t **ppi_k_run_lengths,
+ uint32_t **ppi_k_durations )
+{
+ int rv = VLC_SUCCESS;
+ filter_sys_t *p_sys = p_filter->p_sys;
+ UCHAR *psz_text_orig = psz_text;
+ font_stack_t *p_fonts = NULL;
+ vlc_value_t val;
+ int i_scale = 1000;
+
+ char *psz_node = NULL;
+
+ bool b_italic = false;
+ bool b_bold = false;
+ bool b_uline = false;
+ bool b_through = false;
+
+ if( VLC_SUCCESS == var_Get( p_filter, "scale", &val ))
+ i_scale = val.i_int;
+
+ if( p_font_style )
+ {
+ rv = PushFont( &p_fonts,
+ p_font_style->psz_fontname,
+ p_font_style->i_font_size * i_scale / 1000,
+ (p_font_style->i_font_color & 0xffffff) |
+ ((p_font_style->i_font_alpha & 0xff) << 24),
+ (p_font_style->i_karaoke_background_color & 0xffffff) |
+ ((p_font_style->i_karaoke_background_alpha & 0xff) << 24));
+
+ if( p_font_style->i_style_flags & STYLE_BOLD )
+ b_bold = true;
+ if( p_font_style->i_style_flags & STYLE_ITALIC )
+ b_italic = true;
+ if( p_font_style->i_style_flags & STYLE_UNDERLINE )
+ b_uline = true;
+ if( p_font_style->i_style_flags & STYLE_STRIKEOUT )
+ b_through = true;
+ }
+#ifdef HAVE_FONTCONFIG
+ else
+ {
+ rv = PushFont( &p_fonts,
+ TR_DEFAULT_FONT,
+ p_sys->i_font_size,
+ (p_sys->i_font_color & 0xffffff) |
+ (((255-p_sys->i_font_opacity) & 0xff) << 24),
+ 0x00ffffff );
+ }
+#endif
+
+ if( rv != VLC_SUCCESS )
+ return rv;
+
+ while ( ( xml_ReaderRead( p_xml_reader ) == 1 ) )
+ {
+ switch ( xml_ReaderNodeType( p_xml_reader ) )
+ {
+ case XML_READER_NONE:
+ break;
+ case XML_READER_ENDELEM:
+ psz_node = xml_ReaderName( p_xml_reader );
+ if( psz_node )
+ {
+ if( !strcasecmp( "font", psz_node ) )
+ PopFont( &p_fonts );
+ else if( !strcasecmp( "b", psz_node ) )
+ b_bold = false;
+ else if( !strcasecmp( "i", psz_node ) )
+ b_italic = false;
+ else if( !strcasecmp( "u", psz_node ) )
+ b_uline = false;
+ else if( !strcasecmp( "s", psz_node ) )
+ b_through = false;
+
+ free( psz_node );
+ }
+ break;
+ case XML_READER_STARTELEM:
+ psz_node = xml_ReaderName( p_xml_reader );
+ if( psz_node )
+ {
+ if( !strcasecmp( "font", psz_node ) )
+ rv = HandleFontAttributes( p_xml_reader, &p_fonts, i_scale );
+ else if( !strcasecmp( "b", psz_node ) )
+ b_bold = true;
+ else if( !strcasecmp( "i", psz_node ) )
+ b_italic = true;
+ else if( !strcasecmp( "u", psz_node ) )
+ b_uline = true;
+ else if( !strcasecmp( "s", psz_node ) )
+ b_through = true;
+
+ else if( !strcasecmp( "br", psz_node ) )
+ {
+ SetupLine( p_filter, "\n", &psz_text,
+ pi_runs, ppi_run_lengths, ppp_styles,
+ GetStyleFromFontStack( p_sys,
+ &p_fonts,
+ b_bold,
+ b_italic,
+ b_uline,
+ b_through) );
+ }
+ else if( !strcasecmp( "k", psz_node ) )
+ {
+ /* Only valid in karaoke */
+ if( b_karaoke )
+ {
+ if( *pi_k_runs > 0 )
+ {
+ SetKaraokeLen( *pi_runs, *ppi_run_lengths,
+ *pi_k_runs, *ppi_k_run_lengths );
+ }
+ SetupKaraoke( p_xml_reader, pi_k_runs,
+ ppi_k_run_lengths, ppi_k_durations );
+ }
+ }
+
+ free( psz_node );
+ }
+ break;
+ case XML_READER_TEXT:
+ psz_node = xml_ReaderValue( p_xml_reader );
+ if( psz_node )
+ {
+ /* */
+ HandleWhiteSpace( psz_node );
+ resolve_xml_special_chars( psz_node );
+
+ SetupLine( p_filter, psz_node, &psz_text,
+ pi_runs, ppi_run_lengths, ppp_styles,
+ GetStyleFromFontStack( p_sys,
+ &p_fonts,
+ b_bold,
+ b_italic,
+ b_uline,
+ b_through) );
+ free( psz_node );
+ }
+ break;
+ }
+ if( rv != VLC_SUCCESS )
+ {
+ psz_text = psz_text_orig;
+ break;
+ }
+ }
+ if( b_karaoke )
+ {
+ SetKaraokeLen( *pi_runs, *ppi_run_lengths,
+ *pi_k_runs, *ppi_k_run_lengths );
+ }
+
+ *pi_len = psz_text - psz_text_orig;
+
+ while( VLC_SUCCESS == PopFont( &p_fonts ) );
+
+ return rv;
+}
projects / vlc / blobdiff