Fixed SSA subtitles pause.

 I have modified spu_RenderSubpictures to take a b_paused argument.
 The calls to pf_pre_render/pf_update_regions could have been moved to
spu_SortSubpicture and might have been cleaner BUT the way used keeps
all time consumming tasks inside spu_RenderSubpictures.

include/vlc_osd.h

@@ -120,7 +120,7 @@ VLC_EXPORT( subpicture_t *, spu_SortSubpictures, ( spu_t *, mtime_t display_date
  * \param p_fmt_dst is the format of the destination picture.
  * \param p_fmt_src is the format of the original(source) video.
  */
-VLC_EXPORT( void, spu_RenderSubpictures, ( spu_t *,  picture_t *, const video_format_t *p_fmt_dst, subpicture_t *p_list, const video_format_t *p_fmt_src ) );
+VLC_EXPORT( void, spu_RenderSubpictures, ( spu_t *,  picture_t *, const video_format_t *p_fmt_dst, subpicture_t *p_list, const video_format_t *p_fmt_src, bool b_paused ) );
 
 /** @}*/
 

include/vlc_vout.h

@@ -703,7 +703,7 @@ VLC_EXPORT( void,            vout_PlacePicture,   ( vout_thread_t *, unsigned in
 
 /* DO NOT use vout_RenderPicture unless you are in src/video_ouput */
 picture_t *     vout_RenderPicture  ( vout_thread_t *, picture_t *,
-                                                       subpicture_t * );
+                                                       subpicture_t *, bool b_paused );
 
 /* DO NOT use vout_CountPictureAvailable unless your are in src/input/dec.c (no exception) */
 int vout_CountPictureAvailable( vout_thread_t * );

modules/stream_out/transcode.c

@@ -2012,7 +2012,7 @@ static int transcode_video_process( sout_stream_t *p_stream,
             fmt.i_sar_den = VOUT_ASPECT_FACTOR;
 
             spu_RenderSubpictures( p_sys->p_spu, p_pic, &fmt,
-                                   p_subpic, &id->p_decoder->fmt_out.video );
+                                   p_subpic, &id->p_decoder->fmt_out.video, false );
         }
 
         /* Run user specified filter chain */

src/video_output/video_output.c

@@ -970,21 +970,22 @@ static void* RunThread( vlc_object_t *p_this )
         /*
          * Check for subpictures to display
          */
+        bool b_paused = false;
         if( display_date > 0 )
         {
             p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT, FIND_PARENT );
-            p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date,
-                                            p_input ? var_GetInteger( p_input, "state" ) == PAUSE_S : false,
-                                            b_snapshot );
+            b_paused = p_input && var_GetInteger( p_input, "state" ) == PAUSE_S;
             if( p_input )
                 vlc_object_release( p_input );
+
+            p_subpic = spu_SortSubpictures( p_vout->p_spu, display_date, b_paused, b_snapshot );
         }
 
         /*
          * Perform rendering
          */
         i_displayed++;
-        p_directbuffer = vout_RenderPicture( p_vout, p_filtered_picture, p_subpic );
+        p_directbuffer = vout_RenderPicture( p_vout, p_filtered_picture, p_subpic, b_paused );
 
         /*
          * Take a snapshot if requested

src/video_output/vout_pictures.c

@@ -321,7 +321,7 @@ static void vout_UnlockPicture( vout_thread_t *p_vout, picture_t *p_picture )
  * thread which direct buffer needs to be displayed.
  */
 picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
-                               subpicture_t *p_subpic )
+                               subpicture_t *p_subpic, bool b_paused )
 {
     if( p_pic == NULL )
         return NULL;
@@ -342,7 +342,7 @@ picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
 
             spu_RenderSubpictures( p_vout->p_spu,
                                    PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
-                                   p_subpic, &p_vout->fmt_in );
+                                   p_subpic, &p_vout->fmt_in, b_paused );
 
             vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 
@@ -369,7 +369,7 @@ picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
         picture_Copy( PP_OUTPUTPICTURE[0], p_pic );
         spu_RenderSubpictures( p_vout->p_spu,
                                PP_OUTPUTPICTURE[0], &p_vout->fmt_out,
-                               p_subpic, &p_vout->fmt_in );
+                               p_subpic, &p_vout->fmt_in, b_paused );
 
         vout_UnlockPicture( p_vout, PP_OUTPUTPICTURE[0] );
 
@@ -407,7 +407,7 @@ picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
         /* Render subpictures on the first direct buffer */
         spu_RenderSubpictures( p_vout->p_spu,
                                p_tmp_pic, &p_vout->fmt_out,
-                               p_subpic, &p_vout->fmt_in );
+                               p_subpic, &p_vout->fmt_in, b_paused );
 
         if( vout_LockPicture( p_vout, &p_vout->p_picture[0] ) )
             return NULL;
@@ -426,7 +426,7 @@ picture_t *vout_RenderPicture( vout_thread_t *p_vout, picture_t *p_pic,
         /* Render subpictures on the first direct buffer */
         spu_RenderSubpictures( p_vout->p_spu,
                                &p_vout->p_picture[0], &p_vout->fmt_out,
-                               p_subpic, &p_vout->fmt_in );
+                               p_subpic, &p_vout->fmt_in, b_paused );
     }
 
     vout_UnlockPicture( p_vout, &p_vout->p_picture[0] );

src/video_output/vout_subpictures.c

@@ -363,7 +363,7 @@ void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
 void spu_RenderSubpictures( spu_t *p_spu,
                             picture_t *p_pic_dst, const video_format_t *p_fmt_dst,
                             subpicture_t *p_subpic_list,
-                            const video_format_t *p_fmt_src )
+                            const video_format_t *p_fmt_src, bool b_paused )
 {
     spu_private_t *p_sys = p_spu->p;
 
@@ -389,10 +389,10 @@ void spu_RenderSubpictures( spu_t *p_spu,
                 p_subpic = p_subpic->p_next )
     {
         /* */
-        if( p_subpic->pf_pre_render )
+        if( !b_paused && p_subpic->pf_pre_render )
             p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
 
-        if( p_subpic->pf_update_regions )
+        if( !b_paused && p_subpic->pf_update_regions )
         {
             video_format_t fmt_org = *p_fmt_dst;
             fmt_org.i_width =