* Damien LUCAS <damien.lucas@anevia.com>
* Laurent Aimar <fenrir@via.ecp.fr>
* Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
+ * Derk-Jan Hartman <hartman #at# videolan dot 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
* FIXME:
* DVB subtitles coded as strings of characters are not handled correctly.
* The character codes in the string should actually be indexes referring to a
- * character table identified in the subtitle descriptor.
+ * character table identified in the subtitle descriptor.
+ *
+ * The spec is quite vague in this area, but what is meant is perhaps that it
+ * refers to the character index in the codepage belonging to the language specified
+ * in the subtitle descriptor. Potentially it's designed for widechar
+ * (but not for UTF-*) codepages.
*****************************************************************************/
#include <vlc/vlc.h>
#include <vlc_vout.h>
* Those structures refer closely to the ETSI 300 743 Object model
****************************************************************************/
-/* The object definition gives the position of the object in a region */
+/* The object definition gives the position of the object in a region [7.2.5] */
typedef struct dvbsub_objectdef_s
{
int i_id;
} dvbsub_color_t;
-/* */
+/* The displays dimensions [7.2.1] */
+typedef struct dvbsub_display_s
+{
+ uint8_t i_id;
+ uint8_t i_version;
+
+ int i_width;
+ int i_height;
+
+ vlc_bool_t b_windowed;
+ int i_x;
+ int i_y;
+ int i_max_x;
+ int i_max_y;
+
+} dvbsub_display_t;
+
+/* [7.2.4] */
typedef struct dvbsub_clut_s
{
uint8_t i_id;
} dvbsub_clut_t;
-/* The Region is an aera on the image
+/* The Region is an aera on the image [7.2.3]
* with a list of the object definitions associated and a CLUT */
typedef struct dvbsub_region_s
{
} dvbsub_regiondef_t;
-/* The page defines the list of regions */
+/* The page defines the list of regions [7.2.2] */
typedef struct
{
int i_id;
dvbsub_page_t *p_page;
dvbsub_region_t *p_regions;
dvbsub_clut_t *p_cluts;
- dvbsub_clut_t default_clut;
+ dvbsub_display_t *p_display;
+ dvbsub_clut_t default_clut;
};
#define DVBSUB_ST_REGION_COMPOSITION 0x11
#define DVBSUB_ST_CLUT_DEFINITION 0x12
#define DVBSUB_ST_OBJECT_DATA 0x13
+#define DVBSUB_ST_DISPLAY_DEFINITION 0x14
#define DVBSUB_ST_ENDOFDISPLAY 0x80
#define DVBSUB_ST_STUFFING 0xff
/* List of different OBJECT TYPES */
static void decode_page_composition( decoder_t *, bs_t * );
static void decode_region_composition( decoder_t *, bs_t * );
static void decode_object( decoder_t *, bs_t * );
+static void decode_display_definition( decoder_t *, bs_t * );
static void decode_clut( decoder_t *, bs_t * );
static void free_all( decoder_t * );
p_sys->p_regions = NULL;
p_sys->p_cluts = NULL;
p_sys->p_page = NULL;
+ p_sys->p_display = NULL;
var_Create( p_this, DVBSUB_CFG_PREFIX "position",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
decode_object( p_dec, s );
break;
+ case DVBSUB_ST_DISPLAY_DEFINITION:
+#ifdef DEBUG_DVBSUB
+ msg_Dbg( p_dec, "decode_display_definition" );
+#endif
+ decode_display_definition( p_dec, s );
+ break;
+
case DVBSUB_ST_ENDOFDISPLAY:
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "end of display" );
}
}
+/* ETSI 300 743 [7.2.1] */
+static void decode_display_definition( decoder_t *p_dec, bs_t *s )
+{
+ decoder_sys_t *p_sys = p_dec->p_sys;
+ uint16_t i_segment_length;
+ uint16_t i_processed_length = 40;
+ dvbsub_display_t *p_display;
+ dvbsub_display_t *p_old = p_sys->p_display;
+ int i_version;
+
+ i_segment_length = bs_read( s, 16 );
+ i_version = bs_read( s, 4 );
+
+ /* Check version number */
+ if( p_old && p_old->i_version == i_version )
+ {
+ /* The definition did not change */
+ bs_skip( s, 8*i_segment_length - 4 );
+ return;
+ }
+
+#ifdef DEBUG_DVBSUB
+ msg_Dbg( p_dec, "new display definition: %i", i_version );
+#endif
+ p_display = malloc( sizeof(dvbsub_display_t) );
+
+ /* We don't have this version of the display definition: Parse it */
+ p_display->i_version = i_version;
+ p_display->b_windowed = bs_read( s, 1 );
+ bs_skip( s, 3 ); /* Reserved bits */
+ p_display->i_width = bs_read( s, 16 )+1;
+ p_display->i_height = bs_read( s, 16 )+1;
+
+ if( p_display->b_windowed )
+ {
+#ifdef DEBUG_DVBSUB
+ msg_Dbg( p_dec, "display definition with offsets (windowed)" );
+#endif
+ /* Coordinates are measured from the top left corner */
+ p_display->i_x = bs_read( s, 16 );
+ p_display->i_max_x = bs_read( s, 16 );
+ p_display->i_y = bs_read( s, 16 );
+ p_display->i_max_y = bs_read( s, 16 );
+ i_processed_length += 64;
+ }
+
+ p_sys->p_display = p_display;
+ if( p_old ) free( p_old );
+
+ if( i_processed_length != i_segment_length*8 )
+ {
+ msg_Err( p_dec, "processed length %d != segment length %d", i_processed_length, i_segment_length );
+ }
+
+#ifdef DEBUG_DVBSUB
+ msg_Dbg( p_dec, "version: %d, width: %d, height: %d", p_display->i_version, p_display->i_width, p_display->i_height );
+ if( p_display->b_windowed )
+ msg_Dbg( p_dec, "xmin: %d, xmax: %d, ymin: %d, ymax: %d", p_display->i_x, p_display->i_max_x, p_display->i_y, p_display->i_max_y );
+#endif
+}
+
static void dvbsub_render_pdata( decoder_t *, dvbsub_region_t *, int, int,
uint8_t *, int );
static void dvbsub_pdata2bpp( bs_t *, uint8_t *, int, int * );
realloc( p_region->p_object_defs[i].psz_text,
i_number_of_codes + 1 );
+ /* FIXME 16bits -> char ??? See Preamble */
for( j = 0; j < i_number_of_codes; j++ )
{
- p_region->p_object_defs[i].psz_text[j] = bs_read( s, 16 );
+ p_region->p_object_defs[i].psz_text[j] = (char)(bs_read( s, 16 ) & 0xFF);
}
p_region->p_object_defs[i].psz_text[j] = 0;
}
dvbsub_region_t *p_reg, *p_reg_next;
dvbsub_clut_t *p_clut, *p_clut_next;
+ if( p_sys->p_display ) free( p_sys->p_display );
+
for( p_clut = p_sys->p_cluts; p_clut != NULL; p_clut = p_clut_next )
{
p_clut_next = p_clut->p_next;
/* Set the pf_render callback */
p_spu->i_start = p_sys->i_pts;
- p_spu->i_stop = p_spu->i_start + (mtime_t) (i_timeout * 1000000);
p_spu->b_ephemer = VLC_TRUE;
- p_spu->b_fade = VLC_TRUE;
+ p_spu->b_pausable = VLC_TRUE;
+ //p_spu->b_fade = VLC_TRUE;
+ //p_spu->i_stop = p_spu->i_start + (mtime_t) (i_timeout * 1000000);
/* Correct positioning of SPU */
p_spu->b_absolute = p_sys->b_absolute;
p_spu->i_original_picture_width = 720;
p_spu->i_original_picture_height = 576;
+ if( p_sys->p_display )
+ {
+ p_spu->i_original_picture_width = p_sys->p_display->i_width;
+ p_spu->i_original_picture_height = p_sys->p_display->i_height;
+
+ if( p_sys->p_display->b_windowed )
+ {
+ /* TODO: check that this actually works */
+ p_spu->i_original_picture_width = p_sys->p_display->i_max_x - p_sys->p_display->i_x;
+ p_spu->i_original_picture_height = p_sys->p_display->i_max_y - p_sys->p_display->i_y;
+ p_spu->i_x += p_sys->p_display->i_x;
+ p_spu->i_y += p_sys->p_display->i_y;
+ }
+ }
+
return p_spu;
}
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