+
+/*****************************************************************************
+ * filter_sys_t: logo filter descriptor
+ *****************************************************************************/
+struct filter_sys_t
+{
+ logo_list_t *p_logo_list;
+
+ int pos, posx, posy;
+
+ bool b_absolute;
+ mtime_t i_last_date;
+
+ /* On the fly control variable */
+ bool b_need_update;
+};
+
+static subpicture_t *Filter( filter_t *, mtime_t );
+
+/*****************************************************************************
+ * CreateFilter: allocates logo video filter
+ *****************************************************************************/
+static int CreateFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys;
+ logo_list_t *p_logo_list;
+
+ /* Allocate structure */
+ p_sys = p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
+ if( p_sys == NULL )
+ return VLC_ENOMEM;
+ p_logo_list = p_sys->p_logo_list = malloc( sizeof( logo_list_t ) );
+ if( p_logo_list == NULL )
+ {
+ free( p_sys );
+ return VLC_ENOMEM;
+ }
+
+ config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
+ p_filter->p_cfg );
+
+ /* Hook used for callback variables */
+ p_logo_list->psz_filename =
+ var_CreateGetStringCommand( p_filter, "logo-file" );
+ if( !p_logo_list->psz_filename || !*p_logo_list->psz_filename )
+ {
+ msg_Err( p_this, "logo file not specified" );
+ free( p_sys );
+ free( p_logo_list );
+ return VLC_EGENERIC;
+ }
+
+ p_sys->posx = var_CreateGetIntegerCommand( p_filter, "logo-x" );
+ p_sys->posy = var_CreateGetIntegerCommand( p_filter, "logo-y" );
+ p_sys->pos = var_CreateGetIntegerCommand( p_filter, "logo-position" );
+ p_logo_list->i_alpha = __MAX( __MIN( var_CreateGetIntegerCommand(
+ p_filter, "logo-transparency"), 255 ), 0 );
+ p_logo_list->i_delay =
+ var_CreateGetIntegerCommand( p_filter, "logo-delay" );
+ p_logo_list->i_repeat =
+ var_CreateGetIntegerCommand( p_filter, "logo-repeat" );
+
+ var_AddCallback( p_filter, "logo-file", LogoCallback, p_sys );
+ var_AddCallback( p_filter, "logo-x", LogoCallback, p_sys );
+ var_AddCallback( p_filter, "logo-y", LogoCallback, p_sys );
+ var_AddCallback( p_filter, "logo-position", LogoCallback, p_sys );
+ var_AddCallback( p_filter, "logo-transparency", LogoCallback, p_sys );
+ var_AddCallback( p_filter, "logo-repeat", LogoCallback, p_sys );
+
+ vlc_mutex_init( &p_logo_list->lock );
+ vlc_mutex_lock( &p_logo_list->lock );
+
+ LoadLogoList( p_this, p_logo_list );
+
+ vlc_mutex_unlock( &p_logo_list->lock );
+
+ /* Misc init */
+ p_filter->pf_sub_filter = Filter;
+ p_sys->b_need_update = true;
+
+ p_sys->i_last_date = 0;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * DestroyFilter: destroy logo video filter
+ *****************************************************************************/
+static void DestroyFilter( vlc_object_t *p_this )
+{
+ filter_t *p_filter = (filter_t *)p_this;
+ filter_sys_t *p_sys = p_filter->p_sys;
+
+ vlc_mutex_destroy( &p_sys->p_logo_list->lock );
+ FreeLogoList( p_sys->p_logo_list );
+ free( p_sys->p_logo_list );
+ free( p_sys );
+
+ /* Delete the logo variables from INPUT */
+ var_Destroy( p_filter->p_libvlc, "logo-file" );
+ var_Destroy( p_filter->p_libvlc, "logo-x" );
+ var_Destroy( p_filter->p_libvlc, "logo-y" );
+ var_Destroy( p_filter->p_libvlc, "logo-delay" );
+ var_Destroy( p_filter->p_libvlc, "logo-repeat" );
+ var_Destroy( p_filter->p_libvlc, "logo-position" );
+ var_Destroy( p_filter->p_libvlc, "logo-transparency" );
+}
+
+/*****************************************************************************
+ * Filter: the whole thing
+ *****************************************************************************
+ * This function outputs subpictures at regular time intervals.
+ *****************************************************************************/
+static subpicture_t *Filter( filter_t *p_filter, mtime_t date )
+{
+ filter_sys_t *p_sys = p_filter->p_sys;
+ logo_list_t *p_logo_list = p_sys->p_logo_list;
+ subpicture_t *p_spu;
+ subpicture_region_t *p_region;
+ video_format_t fmt;
+ picture_t *p_pic;
+ logo_t *p_logo;
+
+ vlc_mutex_lock( &p_logo_list->lock );
+ /* Basic test: b_need_update occurs on a dynamic change,
+ & i_next_pic is the general timer, when to
+ look at updating the logo image */
+
+ if( ( ( !p_sys->b_need_update ) && ( p_logo_list->i_next_pic > date ) )
+ || !p_logo_list->i_repeat )
+ {
+ vlc_mutex_unlock( &p_logo_list->lock );
+ return 0;
+ }
+ /* prior code tested on && p_sys->i_last_date +5000000 > date ) return 0; */
+
+ /* adjust index to the next logo */
+ p_logo_list->i_counter =
+ ( p_logo_list->i_counter + 1 )%p_logo_list->i_count;
+
+ p_logo = &p_logo_list->p_logo[p_logo_list->i_counter];
+ p_pic = p_logo->p_pic;
+
+ /* Allocate the subpicture internal data. */
+ p_spu = filter_NewSubpicture( p_filter );
+ if( !p_spu )
+ {
+ vlc_mutex_unlock( &p_logo_list->lock );
+ return NULL;
+ }
+
+ p_spu->b_absolute = p_sys->b_absolute;
+ p_spu->i_start = p_sys->i_last_date = date;
+ p_spu->i_stop = 0;
+ p_spu->b_ephemer = true;
+
+ p_sys->b_need_update = false;
+ p_logo_list->i_next_pic = date +
+ ( p_logo->i_delay != -1 ? p_logo->i_delay : p_logo_list->i_delay ) * 1000;
+
+ if( p_logo_list->i_repeat != -1
+ && p_logo_list->i_counter == 0 )
+ {
+ p_logo_list->i_repeat--;
+ if( p_logo_list->i_repeat == 0 )
+ {
+ vlc_mutex_unlock( &p_logo_list->lock );
+ return p_spu;
+ }
+ }
+
+ if( !p_pic || !p_logo->i_alpha
+ || ( p_logo->i_alpha == -1 && !p_logo_list->i_alpha ) )
+ {
+ /* Send an empty subpicture to clear the display */
+ vlc_mutex_unlock( &p_logo_list->lock );
+ return p_spu;
+ }
+
+ /* Create new SPU region */
+ memset( &fmt, 0, sizeof(video_format_t) );
+ fmt.i_chroma = VLC_FOURCC('Y','U','V','A');
+ fmt.i_aspect = VOUT_ASPECT_FACTOR;
+ fmt.i_sar_num = fmt.i_sar_den = 1;
+ fmt.i_width = fmt.i_visible_width = p_pic->p[Y_PLANE].i_visible_pitch;
+ fmt.i_height = fmt.i_visible_height = p_pic->p[Y_PLANE].i_visible_lines;
+ fmt.i_x_offset = fmt.i_y_offset = 0;
+ p_region = subpicture_region_New( &fmt );
+ if( !p_region )
+ {
+ msg_Err( p_filter, "cannot allocate SPU region" );
+ p_filter->pf_sub_buffer_del( p_filter, p_spu );
+ vlc_mutex_unlock( &p_logo_list->lock );
+ return NULL;
+ }
+
+ /* FIXME the copy is probably not needed anymore */
+ picture_Copy( p_region->p_picture, p_pic );
+ vlc_mutex_unlock( &p_logo_list->lock );
+
+ /* where to locate the logo: */
+ if( p_sys->pos < 0 )
+ { /* set to an absolute xy */
+ p_region->i_align = OSD_ALIGN_RIGHT | OSD_ALIGN_TOP;
+ p_spu->b_absolute = true;
+ }
+ else
+ { /* set to one of the 9 relative locations */
+ p_region->i_align = p_sys->pos;
+ p_spu->b_absolute = false;
+ }
+
+ p_region->i_x = p_sys->posx;
+ p_region->i_y = p_sys->posy;
+
+ p_spu->p_region = p_region;
+
+ p_spu->i_alpha = ( p_logo->i_alpha != -1 ?
+ p_logo->i_alpha : p_logo_list->i_alpha );
+
+ return p_spu;
+}
+
+/*****************************************************************************
+ * Callback to update params on the fly
+ *****************************************************************************/
+static int LogoCallback( vlc_object_t *p_this, char const *psz_var,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ VLC_UNUSED(oldval);
+ filter_sys_t *p_sys = (filter_sys_t *)p_data;
+ logo_list_t *p_logo_list = p_sys->p_logo_list;
+
+ if( !strncmp( psz_var, "logo-file", 6 ) )
+ {
+ vlc_mutex_lock( &p_logo_list->lock );
+ FreeLogoList( p_logo_list );
+ p_logo_list->psz_filename = strdup( newval.psz_string );
+ LoadLogoList( p_this, p_logo_list );
+ vlc_mutex_unlock( &p_logo_list->lock );
+ p_sys->b_need_update = true;
+ }
+ else if ( !strncmp( psz_var, "logo-x", 6 ) )
+ {
+ p_sys->posx = newval.i_int;
+ }
+ else if ( !strncmp( psz_var, "logo-y", 6 ) )
+ {
+ p_sys->posy = newval.i_int;
+ }
+ else if ( !strncmp( psz_var, "logo-position", 12 ) )
+ {
+ p_sys->pos = newval.i_int;
+ }
+ else if ( !strncmp( psz_var, "logo-transparency", 9 ) )
+ {
+ vlc_mutex_lock( &p_logo_list->lock );
+ p_logo_list->i_alpha = __MAX( __MIN( newval.i_int, 255 ), 0 );
+ vlc_mutex_unlock( &p_logo_list->lock );
+ }
+ else if ( !strncmp( psz_var, "logo-repeat", 11 ) )
+ {
+ vlc_mutex_lock( &p_logo_list->lock );
+ p_logo_list->i_repeat = newval.i_int;
+ vlc_mutex_unlock( &p_logo_list->lock );
+ }
+ p_sys->b_need_update = true;
+ return VLC_SUCCESS;
+}