]> git.sesse.net Git - vlc/blobdiff - src/video_output/vout_subpictures.c
Use var_Inherit* instead of var_CreateGet*.
[vlc] / src / video_output / vout_subpictures.c
index 3381ddcac88e6bba22f047ae10a04a21f38ab61b..45d05414e16870e470c86ec4be329e3b608b38d7 100644 (file)
 # include "config.h"
 #endif
 
+#include <assert.h>
+#include <limits.h>
+
 #include <vlc_common.h>
 #include <vlc_vout.h>
 #include <vlc_block.h>
 #include <vlc_filter.h>
-#include <vlc_osd.h>
+#include <vlc_spu.h>
 #include "../libvlc.h"
-
-#include <assert.h>
-#include <limits.h>
+#include "vout_internal.h"
+#include <vlc_image.h>
+#include <vlc_input.h>
+#include <vlc_modules.h>
+#include "../misc/subpicture.h"
 
 /*****************************************************************************
  * Local prototypes
  *****************************************************************************/
+
+/* Number of simultaneous subpictures */
+#define VOUT_MAX_SUBPICTURES (__MAX(VOUT_MAX_PICTURES, SPU_MAX_PREPARE_TIME/5000))
+
+/* */
+typedef struct
+{
+    subpicture_t *p_subpicture;
+    bool          b_reject;
+} spu_heap_entry_t;
+
+typedef struct
+{
+    spu_heap_entry_t p_entry[VOUT_MAX_SUBPICTURES];
+
+} spu_heap_t;
+
+static void SpuHeapInit( spu_heap_t * );
+static int  SpuHeapPush( spu_heap_t *, subpicture_t * );
+static void SpuHeapDeleteAt( spu_heap_t *, int i_index );
+static int  SpuHeapDeleteSubpicture( spu_heap_t *, subpicture_t * );
+static void SpuHeapClean( spu_heap_t *p_heap );
+
 struct spu_private_t
 {
-    vlc_mutex_t  subpicture_lock;                  /**< subpicture heap lock */
-    subpicture_t p_subpicture[VOUT_MAX_SUBPICTURES];        /**< subpictures */
-    int i_channel;             /**< number of subpicture channels registered */
-    int64_t i_subpicture_order; /**< number of created subpicture since spu creation */
+    vlc_mutex_t lock;   /* lock to protect all followings fields */
+    vlc_object_t *p_input;
+
+    spu_heap_t heap;
 
+    int i_channel;             /**< number of subpicture channels registered */
     filter_t *p_blend;                            /**< alpha blending module */
     filter_t *p_text;                              /**< text renderer module */
     filter_t *p_scale_yuvp;                     /**< scaling module for YUVP */
@@ -61,121 +90,130 @@ struct spu_private_t
     bool b_force_palette;             /**< force palette of subpicture */
     uint8_t palette[4][4];                               /**< forced palette */
 
-    /* Supciture filters */
+    /* Subpiture filters */
+    char           *psz_chain_update;
+    vlc_mutex_t    chain_lock;
     filter_chain_t *p_chain;
-};
 
-static void UpdateSPU   ( spu_t *, vlc_object_t * );
-static int  CropCallback( vlc_object_t *, char const *,
-                          vlc_value_t, vlc_value_t, void * );
+    /* */
+    mtime_t i_last_sort_date;
+};
 
-static int SpuControl( spu_t *, int, va_list );
+/* */
+typedef struct
+{
+    int w;
+    int h;
+} spu_scale_t;
+static spu_scale_t spu_scale_create( int w, int h );
+static spu_scale_t spu_scale_unit(void );
+static spu_scale_t spu_scale_createq( int wn, int wd, int hn, int hd );
+static int spu_scale_w( int v, const spu_scale_t s );
+static int spu_scale_h( int v, const spu_scale_t s );
+static int spu_invscale_w( int v, const spu_scale_t s );
+static int spu_invscale_h( int v, const spu_scale_t s );
 
-static subpicture_t *sub_new_buffer( filter_t * );
-static void sub_del_buffer( filter_t *, subpicture_t * );
-static subpicture_t *spu_new_buffer( filter_t * );
-static void spu_del_buffer( filter_t *, subpicture_t * );
-static picture_t *spu_new_video_buffer( filter_t * );
-static void spu_del_video_buffer( filter_t *, picture_t * );
+typedef struct
+{
+    int i_x;
+    int i_y;
+    int i_width;
+    int i_height;
 
-static int spu_ParseChain( spu_t * );
-static int SubFilterCallback( vlc_object_t *, char const *,
-                              vlc_value_t, vlc_value_t, void * );
+    spu_scale_t scale;
+} spu_area_t;
 
-static int SubFilterAllocationInit( filter_t *, void * );
-static void SubFilterAllocationClean( filter_t * );
-struct filter_owner_sys_t
-{
-    spu_t *p_spu;
-    int i_channel;
-};
+static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t );
+static spu_area_t spu_area_scaled( spu_area_t );
+static spu_area_t spu_area_unscaled( spu_area_t, spu_scale_t );
+static bool spu_area_overlap( spu_area_t, spu_area_t );
 
-#define SCALE_UNIT (1000)
 
-#define VLC_FOURCC_YUVP VLC_FOURCC('Y','U','V','P')
-#define VLC_FOURCC_YUVA VLC_FOURCC('Y','U','V','A')
-#define VLC_FOURCC_RGBA VLC_FOURCC('R','G','B','A')
-#define VLC_FOURCC_TEXT VLC_FOURCC('T','E','X','T')
+/* Subpicture rendered flag
+ * FIXME ? it could be moved to private ? */
+#define SUBPICTURE_RENDERED  (0x1000)
+#if SUBPICTURE_RENDERED < SUBPICTURE_ALIGN_MASK
+#   error SUBPICTURE_RENDERED too low
+#endif
 
-/* */
-struct subpicture_region_private_t
-{
-    video_format_t fmt;
-    picture_t      *p_picture;
-};
+#define SCALE_UNIT (1000)
 
-static subpicture_region_private_t *SpuRegionPrivateCreate( video_format_t *p_fmt )
-{
-    subpicture_region_private_t *p_private = malloc( sizeof(*p_private) );
+static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic );
+static int SubpictureCmp( const void *s0, const void *s1 );
 
-    if( !p_private )
-        return NULL;
+static void SpuRenderRegion( spu_t *,
+                             picture_t *p_pic_dst, spu_area_t *,
+                             subpicture_t *, subpicture_region_t *,
+                             const spu_scale_t scale_size,
+                             const video_format_t *p_fmt,
+                             const spu_area_t *p_subtitle_area, int i_subtitle_area,
+                             mtime_t render_date );
 
-    p_private->fmt = *p_fmt;
-    if( p_fmt->p_palette )
-    {
-        p_private->fmt.p_palette = malloc( sizeof(*p_private->fmt.p_palette) );
-        if( p_private->fmt.p_palette )
-            *p_private->fmt.p_palette = *p_fmt->p_palette;
-    }
-    p_private->p_picture = NULL;
+static void UpdateSPU   ( spu_t *, vlc_object_t * );
+static int  CropCallback( vlc_object_t *, char const *,
+                          vlc_value_t, vlc_value_t, void * );
 
-    return p_private;
-}
-static void SpuRegionPrivateDestroy( subpicture_region_private_t *p_private )
+/* Buffer allocation for SPU filter (blend, scale, ...) */
+struct filter_owner_sys_t
 {
-    if( p_private->p_picture )
-        picture_Release( p_private->p_picture );
-    free( p_private->fmt.p_palette );
-    free( p_private );
-}
+    spu_t *p_spu;
+    int i_channel;
+};
+static int spu_get_attachments( filter_t *,
+                                input_attachment_t ***, int * );
+static picture_t *spu_new_video_buffer( filter_t * );
+static void spu_del_video_buffer( filter_t *, picture_t * );
+
+/* Buffer aloccation fir SUB filter */
+static int SubFilterAllocationInit( filter_t *, void * );
+static void SubFilterAllocationClean( filter_t * );
 
 /* */
-static void SpuRenderCreateAndLoadText( spu_t *p_spu );
-static void SpuRenderCreateAndLoadScale( spu_t *p_spu );
+static void SpuRenderCreateAndLoadText( spu_t * );
+static void SpuRenderCreateAndLoadScale( spu_t * );
 static void FilterRelease( filter_t *p_filter );
 
+/*****************************************************************************
+ * Public API
+ *****************************************************************************/
+
+#undef spu_Create
 /**
  * Creates the subpicture unit
  *
  * \param p_this the parent object which creates the subpicture unit
  */
-spu_t *__spu_Create( vlc_object_t *p_this )
+spu_t *spu_Create( vlc_object_t *p_this )
 {
-    int i_index;
-
     spu_t *p_spu;
     spu_private_t *p_sys;
-    
+
     p_spu = vlc_custom_create( p_this, sizeof(spu_t) + sizeof(spu_private_t),
                                VLC_OBJECT_GENERIC, "subpicture" );
-
     if( !p_spu )
         return NULL;
+    vlc_object_attach( p_spu, p_this );
 
     /* Initialize spu fields */
-    p_spu->pf_control = SpuControl;
     p_spu->p = p_sys = (spu_private_t*)&p_spu[1];
 
     /* Initialize private fields */
-    p_sys->i_subpicture_order = 1;
-    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++)
-    {
-        p_sys->p_subpicture[i_index].i_status = FREE_SUBPICTURE;
-    }
+    vlc_mutex_init( &p_sys->lock );
+
+    SpuHeapInit( &p_sys->heap );
 
     p_sys->p_blend = NULL;
     p_sys->p_text = NULL;
     p_sys->p_scale = NULL;
     p_sys->p_scale_yuvp = NULL;
 
-    /* Register the default subpicture channel */
-    p_sys->i_channel = 2;
-
-    vlc_mutex_init( &p_sys->subpicture_lock );
+    p_sys->i_margin = var_InheritInteger( p_spu, "sub-margin" );
 
-    vlc_object_attach( p_spu, p_this );
+    /* Register the default subpicture channel */
+    p_sys->i_channel = SPU_DEFAULT_CHANNEL + 1;
 
+    p_sys->psz_chain_update = NULL;
+    vlc_mutex_init( &p_sys->chain_lock );
     p_sys->p_chain = filter_chain_New( p_spu, "sub filter", false,
                                        SubFilterAllocationInit,
                                        SubFilterAllocationClean,
@@ -185,42 +223,10 @@ spu_t *__spu_Create( vlc_object_t *p_this )
     SpuRenderCreateAndLoadText( p_spu );
     SpuRenderCreateAndLoadScale( p_spu );
 
-    return p_spu;
-}
-
-/**
- * Initialise the subpicture unit
- *
- * \param p_spu the subpicture unit object
- */
-int spu_Init( spu_t *p_spu )
-{
-    spu_private_t *p_sys = p_spu->p;
-
-    /* If the user requested a sub margin, we force the position. */
-    p_sys->i_margin = var_CreateGetInteger( p_spu, "sub-margin" );
-
-    var_Create( p_spu, "sub-filter", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
-    var_AddCallback( p_spu, "sub-filter", SubFilterCallback, p_spu );
-
-    spu_ParseChain( p_spu );
-
-    return VLC_SUCCESS;
-}
-
-int spu_ParseChain( spu_t *p_spu )
-{
-    char *psz_parser = var_GetString( p_spu, "sub-filter" );
-    int i_ret;
-
-    if( !psz_parser )
-        return VLC_EGENERIC;
-
-    i_ret = filter_chain_AppendFromString( p_spu->p->p_chain, psz_parser );
-
-    free( psz_parser );
+    /* */
+    p_sys->i_last_sort_date = -1;
 
-    return i_ret;
+    return p_spu;
 }
 
 /**
@@ -231,19 +237,9 @@ int spu_ParseChain( spu_t *p_spu )
 void spu_Destroy( spu_t *p_spu )
 {
     spu_private_t *p_sys = p_spu->p;
-    int i_index;
-
-    /* Destroy all remaining subpictures */
-    for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
-    {
-        if( p_sys->p_subpicture[i_index].i_status != FREE_SUBPICTURE )
-        {
-            spu_DestroySubpicture( p_spu, &p_sys->p_subpicture[i_index] );
-        }
-    }
 
     if( p_sys->p_blend )
-        FilterRelease( p_sys->p_blend );
+        filter_DeleteBlend( p_sys->p_blend );
 
     if( p_sys->p_text )
         FilterRelease( p_sys->p_text );
@@ -255,8 +251,13 @@ void spu_Destroy( spu_t *p_spu )
         FilterRelease( p_sys->p_scale );
 
     filter_chain_Delete( p_sys->p_chain );
+    vlc_mutex_destroy( &p_sys->chain_lock );
+    free( p_sys->psz_chain_update );
 
-    vlc_mutex_destroy( &p_sys->subpicture_lock );
+    /* Destroy all remaining subpictures */
+    SpuHeapClean( &p_sys->heap );
+
+    vlc_mutex_destroy( &p_sys->lock );
 
     vlc_object_release( p_spu );
 }
@@ -267,95 +268,49 @@ void spu_Destroy( spu_t *p_spu )
  * \param p_this the object in which to destroy the subpicture unit
  * \param b_attach to select attach or detach
  */
-void spu_Attach( spu_t *p_spu, vlc_object_t *p_this, bool b_attach )
+void spu_Attach( spu_t *p_spu, vlc_object_t *p_input, bool b_attach )
 {
-    vlc_object_t *p_input;
-
-    p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_PARENT );
-    if( !p_input ) return;
-
     if( b_attach )
     {
-        UpdateSPU( p_spu, VLC_OBJECT(p_input) );
+        UpdateSPU( p_spu, p_input );
+        var_Create( p_input, "highlight", VLC_VAR_BOOL );
         var_AddCallback( p_input, "highlight", CropCallback, p_spu );
-        vlc_object_release( p_input );
-    }
-    else
-    {
-        /* Delete callback */
-        var_DelCallback( p_input, "highlight", CropCallback, p_spu );
-        vlc_object_release( p_input );
-    }
-}
 
-/* */
-subpicture_region_t *subpicture_region_New( const video_format_t *p_fmt )
-{
-    subpicture_region_t *p_region = calloc( 1, sizeof(*p_region ) );
-    if( !p_region )
-        return NULL;
+        vlc_mutex_lock( &p_spu->p->lock );
+        p_spu->p->p_input = p_input;
 
-    p_region->fmt = *p_fmt;
-    p_region->fmt.p_palette = NULL;
-    if( p_fmt->i_chroma == VLC_FOURCC_YUVP )
-    {
-        p_region->fmt.p_palette = calloc( 1, sizeof(*p_region->fmt.p_palette) );
-        if( p_fmt->p_palette )
-            *p_region->fmt.p_palette = *p_fmt->p_palette;
+        FilterRelease( p_spu->p->p_text );
+        p_spu->p->p_text = NULL;
+        SpuRenderCreateAndLoadText( p_spu );
+
+        vlc_mutex_unlock( &p_spu->p->lock );
     }
-    p_region->i_alpha = 0xff;
-    p_region->p_next = NULL;
-    p_region->p_private = NULL;
-    p_region->psz_text = NULL;
-    p_region->p_style = NULL;
-    p_region->p_picture = NULL;
-
-    if( p_fmt->i_chroma == VLC_FOURCC_TEXT )
-        return p_region;
-
-    p_region->p_picture = picture_New( p_fmt->i_chroma, p_fmt->i_width, p_fmt->i_height,
-                                       p_fmt->i_aspect );
-    if( !p_region->p_picture )
+    else
     {
-        free( p_fmt->p_palette );
-        free( p_region );
-        return NULL;
-    }
-
-    return p_region;
-}
-
-/* */
-void subpicture_region_Delete( subpicture_region_t *p_region )
-{
-    if( !p_region )
-        return;
-
-    if( p_region->p_private )
-        SpuRegionPrivateDestroy( p_region->p_private );
-
-    if( p_region->p_picture )
-        picture_Release( p_region->p_picture );
-
-    free( p_region->fmt.p_palette );
+        vlc_mutex_lock( &p_spu->p->lock );
+        p_spu->p->p_input = NULL;
+        vlc_mutex_unlock( &p_spu->p->lock );
 
-    free( p_region->psz_text );
-    free( p_region->psz_html );
-    //free( p_region->p_style ); FIXME --fenrir plugin does not allocate the memory for it. I think it might lead to segfault, video renderer can live longer than the decoder
-    free( p_region );
+        /* Delete callbacks */
+        var_DelCallback( p_input, "highlight", CropCallback, p_spu );
+        var_Destroy( p_input, "highlight" );
+    }
 }
 
-/* */
-void subpicture_region_ChainDelete( subpicture_region_t *p_head )
+/**
+ * Inform the SPU filters of mouse event
+ */
+int spu_ProcessMouse( spu_t *p_spu,
+                      const vlc_mouse_t *p_mouse,
+                      const video_format_t *p_fmt )
 {
-    while( p_head )
-    {
-        subpicture_region_t *p_next = p_head->p_next;
+    spu_private_t *p_sys = p_spu->p;
 
-        subpicture_region_Delete( p_head );
+    vlc_mutex_lock( &p_sys->chain_lock );
+    filter_chain_MouseEvent( p_sys->p_chain, p_mouse, p_fmt );
+    vlc_mutex_unlock( &p_sys->chain_lock );
 
-        p_head = p_next;
-    }
+    return VLC_SUCCESS;
 }
 
 /**
@@ -368,191 +323,524 @@ void subpicture_region_ChainDelete( subpicture_region_t *p_head )
  */
 void spu_DisplaySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
 {
-    /* Check if status is valid */
-    if( p_subpic->i_status != RESERVED_SUBPICTURE )
-    {
-        msg_Err( p_spu, "subpicture %p has invalid status #%d",
-                 p_subpic, p_subpic->i_status );
-    }
+    spu_private_t *p_sys = p_spu->p;
 
-    if( p_subpic->i_channel == DEFAULT_CHAN )
+    /* SPU_DEFAULT_CHANNEL always reset itself */
+    if( p_subpic->i_channel == SPU_DEFAULT_CHANNEL )
+        spu_ClearChannel( p_spu, SPU_DEFAULT_CHANNEL );
+
+    /* p_private is for spu only and cannot be non NULL here */
+    for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
+        assert( r->p_private == NULL );
+
+    /* */
+    vlc_mutex_lock( &p_sys->lock );
+    if( SpuHeapPush( &p_sys->heap, p_subpic ) )
     {
-        p_subpic->i_channel = 0xFFFF;
-        spu_Control( p_spu, SPU_CHANNEL_CLEAR, DEFAULT_CHAN );
-        p_subpic->i_channel = DEFAULT_CHAN;
+        vlc_mutex_unlock( &p_sys->lock );
+        msg_Err( p_spu, "subpicture heap full" );
+        subpicture_Delete( p_subpic );
+        return;
     }
-
-    /* Remove reservation flag */
-    p_subpic->i_status = READY_SUBPICTURE;
+    vlc_mutex_unlock( &p_sys->lock );
 }
 
 /**
- * Allocate a subpicture in the spu heap.
- *
- * This function create a reserved subpicture in the spu heap.
- * A null pointer is returned if the function fails. This method provides an
- * already allocated zone of memory in the spu data fields. It needs locking
- * since several pictures can be created by several producers threads.
- * \param p_spu the subpicture unit in which to create the subpicture
- * \return NULL on error, a reserved subpicture otherwise
+ * This function renders all sub picture units in the list.
  */
-subpicture_t *spu_CreateSubpicture( spu_t *p_spu )
+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,
+                            mtime_t render_subtitle_date )
 {
     spu_private_t *p_sys = p_spu->p;
-    int                 i_subpic;                        /* subpicture index */
-    subpicture_t *      p_subpic = NULL;            /* first free subpicture */
 
-    /* Get lock */
-    vlc_mutex_lock( &p_sys->subpicture_lock );
+    const mtime_t render_osd_date = mdate();
 
-    /*
-     * Look for an empty place
-     */
-    p_subpic = NULL;
-    for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
-    {
-        if( p_sys->p_subpicture[i_subpic].i_status == FREE_SUBPICTURE )
-        {
-            /* Subpicture is empty and ready for allocation */
-            p_subpic = &p_sys->p_subpicture[i_subpic];
-            p_sys->p_subpicture[i_subpic].i_status = RESERVED_SUBPICTURE;
-            break;
-        }
-    }
+    const int i_source_video_width  = p_fmt_src->i_width;
+    const int i_source_video_height = p_fmt_src->i_height;
 
-    /* If no free subpicture could be found */
-    if( p_subpic == NULL )
-    {
-        msg_Err( p_spu, "subpicture heap is full" );
-        vlc_mutex_unlock( &p_sys->subpicture_lock );
-        return NULL;
-    }
+    unsigned int i_subpicture;
+    subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
 
-    /* Copy subpicture information, set some default values */
-    memset( p_subpic, 0, sizeof(subpicture_t) );
-    p_subpic->i_order    = p_sys->i_subpicture_order++;
-    p_subpic->i_status   = RESERVED_SUBPICTURE;
-    p_subpic->b_absolute = true;
-    p_subpic->b_fade     = false;
-    p_subpic->b_subtitle = false;
-    p_subpic->i_alpha    = 0xFF;
-    p_subpic->p_region   = NULL;
-    p_subpic->pf_render  = NULL;
-    p_subpic->pf_destroy = NULL;
-    p_subpic->p_sys      = NULL;
-    vlc_mutex_unlock( &p_sys->subpicture_lock );
+    unsigned int i_subtitle_region_count;
+    spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
+    spu_area_t *p_subtitle_area;
+    int i_subtitle_area;
 
-    return p_subpic;
-}
+    vlc_mutex_lock( &p_sys->lock );
 
-/**
- * Remove a subpicture from the heap
- *
- * This function frees a previously reserved subpicture.
- * It is meant to be used when the construction of a picture aborted.
- * This function does not need locking since reserved subpictures are ignored
- * by the spu.
- */
-void spu_DestroySubpicture( spu_t *p_spu, subpicture_t *p_subpic )
-{
-    spu_private_t *p_sys = p_spu->p;
+    /* Preprocess subpictures */
+    i_subpicture = 0;
+    i_subtitle_region_count = 0;
+    for( subpicture_t * p_subpic = p_subpic_list;
+            p_subpic != NULL;
+                p_subpic = p_subpic->p_next )
+    {
+        subpicture_Update( p_subpic,
+                           p_fmt_src, p_fmt_dst,
+                           p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
 
-    /* Get lock */
-    vlc_mutex_lock( &p_sys->subpicture_lock );
+        /* */
+        if( p_subpic->b_subtitle )
+        {
+            for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
+                i_subtitle_region_count++;
+        }
 
-    /* There can be race conditions so we need to check the status */
-    if( p_subpic->i_status == FREE_SUBPICTURE )
-    {
-        vlc_mutex_unlock( &p_sys->subpicture_lock );
-        return;
+        /* */
+        pp_subpicture[i_subpicture++] = p_subpic;
     }
 
-    /* Check if status is valid */
-    if( ( p_subpic->i_status != RESERVED_SUBPICTURE )
-           && ( p_subpic->i_status != READY_SUBPICTURE ) )
+    /* Be sure we have at least 1 picture to process */
+    if( i_subpicture <= 0 )
     {
-        msg_Err( p_spu, "subpicture %p has invalid status %d",
-                         p_subpic, p_subpic->i_status );
+        vlc_mutex_unlock( &p_sys->lock );
+        return;
     }
 
-    subpicture_region_ChainDelete( p_subpic->p_region );
-    p_subpic->p_region = NULL;
+    /* Now order subpicture array
+     * XXX The order is *really* important for overlap subtitles positionning */
+    qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
 
-    if( p_subpic->pf_destroy )
-    {
-        p_subpic->pf_destroy( p_subpic );
-    }
+    /* Allocate area array for subtitle overlap */
+    i_subtitle_area = 0;
+    p_subtitle_area = p_subtitle_area_buffer;
+    if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
+        p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
 
-    p_subpic->i_status = FREE_SUBPICTURE;
+    /* Create the blending module */
+    if( !p_sys->p_blend )
+        p_spu->p->p_blend = filter_NewBlend( VLC_OBJECT(p_spu), p_fmt_dst );
 
-    vlc_mutex_unlock( &p_sys->subpicture_lock );
-}
+    /* Process all subpictures and regions (in the right order) */
+    for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
+    {
+        subpicture_t *p_subpic = pp_subpicture[i_index];
+        subpicture_region_t *p_region;
 
-static void FilterRelease( filter_t *p_filter )
-{
-    if( p_filter->p_module )
-        module_unneed( p_filter, p_filter->p_module );
+        if( !p_subpic->p_region )
+            continue;
 
-    vlc_object_detach( p_filter );
-    vlc_object_release( p_filter );
-}
+        /* FIXME when possible use a better rendering size than source size
+         * (max of display size and source size for example) FIXME */
+        int i_render_width  = p_subpic->i_original_picture_width;
+        int i_render_height = p_subpic->i_original_picture_height;
+        if( !i_render_width || !i_render_height )
+        {
+            if( i_render_width != 0 || i_render_height != 0 )
+                msg_Err( p_spu, "unsupported original picture size %dx%d",
+                         i_render_width, i_render_height );
 
-static void SpuRenderCreateBlend( spu_t *p_spu, vlc_fourcc_t i_chroma, int i_aspect )
-{
-    filter_t *p_blend;
+            p_subpic->i_original_picture_width  = i_render_width = i_source_video_width;
+            p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
+        }
 
-    assert( !p_spu->p->p_blend );
+        if( p_sys->p_text )
+        {
+            p_sys->p_text->fmt_out.video.i_width          =
+            p_sys->p_text->fmt_out.video.i_visible_width  = i_render_width;
 
-    p_spu->p->p_blend =
-    p_blend        = vlc_custom_create( p_spu, sizeof(filter_t),
-                                        VLC_OBJECT_GENERIC, "blend" );
-    if( !p_blend )
-        return;
+            p_sys->p_text->fmt_out.video.i_height         =
+            p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
+        }
+
+        /* Compute scaling from picture to source size */
+        spu_scale_t scale = spu_scale_createq( i_source_video_width,  i_render_width,
+                                               i_source_video_height, i_render_height );
+
+        /* Update scaling from source size to display size(p_fmt_dst) */
+        scale.w = scale.w * p_fmt_dst->i_width  / i_source_video_width;
+        scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
+
+        /* Set default subpicture aspect ratio
+         * FIXME if we only handle 1 aspect ratio per picture, why is it set per
+         * region ? */
+        p_region = p_subpic->p_region;
+        if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
+        {
+            p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
+            p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
+        }
+
+        /* Take care of the aspect ratio */
+        if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
+            p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
+        {
+            /* FIXME FIXME what about region->i_x/i_y ? */
+            scale.w = scale.w *
+                (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
+                p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
+        }
+
+        /* Render all regions
+         * We always transform non absolute subtitle into absolute one on the
+         * first rendering to allow good subtitle overlap support.
+         */
+        for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
+        {
+            spu_area_t area;
 
-    es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
+            /* Check scale validity */
+            if( scale.w <= 0 || scale.h <= 0 )
+                continue;
 
-    es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
-    p_blend->fmt_out.video.i_x_offset = 0;
-    p_blend->fmt_out.video.i_y_offset = 0;
-    p_blend->fmt_out.video.i_chroma = i_chroma;
-    p_blend->fmt_out.video.i_aspect = i_aspect;
+            /* */
+            SpuRenderRegion( p_spu, p_pic_dst, &area,
+                             p_subpic, p_region, scale, p_fmt_dst,
+                             p_subtitle_area, i_subtitle_area,
+                             p_subpic->b_subtitle ? render_subtitle_date : render_osd_date );
 
-    /* The blend module will be loaded when needed with the real
-    * input format */
-    p_blend->p_module = NULL;
+            if( p_subpic->b_subtitle )
+            {
+                area = spu_area_unscaled( area, scale );
+                if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
+                {
+                    p_region->i_x = area.i_x;
+                    p_region->i_y = area.i_y;
+                }
+                if( p_subtitle_area )
+                    p_subtitle_area[i_subtitle_area++] = area;
+            }
+        }
+        if( p_subpic->b_subtitle )
+            p_subpic->b_absolute = true;
+    }
 
     /* */
-    vlc_object_attach( p_blend, p_spu );
+    if( p_subtitle_area != p_subtitle_area_buffer )
+        free( p_subtitle_area );
+
+    vlc_mutex_unlock( &p_sys->lock );
 }
-static void SpuRenderUpdateBlend( spu_t *p_spu, int i_out_width, int i_out_height,
-                                  const video_format_t *p_in_fmt )
+
+/*****************************************************************************
+ * spu_SortSubpictures: find the subpictures to display
+ *****************************************************************************
+ * This function parses all subpictures and decides which ones need to be
+ * displayed. If no picture has been selected, display_date will depend on
+ * the subpicture.
+ * We also check for ephemer DVD subpictures (subpictures that have
+ * to be removed if a newer one is available), which makes it a lot
+ * more difficult to guess if a subpicture has to be rendered or not.
+ *****************************************************************************/
+subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t render_subtitle_date,
+                                   bool b_subtitle_only )
 {
-    filter_t *p_blend = p_spu->p->p_blend;
+    spu_private_t *p_sys = p_spu->p;
+    subpicture_t *p_subpic = NULL;
+    const mtime_t render_osd_date = mdate();
 
-    assert( p_blend );
+    /* Update sub-filter chain */
+    vlc_mutex_lock( &p_sys->lock );
+    char *psz_chain_update = p_sys->psz_chain_update;
+    p_sys->psz_chain_update = NULL;
+    vlc_mutex_unlock( &p_sys->lock );
 
-    /* */
-    if( p_blend->p_module && p_blend->fmt_in.video.i_chroma != p_in_fmt->i_chroma )
+    vlc_mutex_lock( &p_sys->chain_lock );
+    if( psz_chain_update )
     {
-        /* The chroma is not the same, we need to reload the blend module
-         * XXX to match the old behaviour just test !p_blend->fmt_in.video.i_chroma */
-        module_unneed( p_blend, p_blend->p_module );
-        p_blend->p_module = NULL;
+        filter_chain_Reset( p_sys->p_chain, NULL, NULL );
+
+        filter_chain_AppendFromString( p_spu->p->p_chain, psz_chain_update );
+
+        free( psz_chain_update );
     }
+    /* Run subpicture filters */
+    filter_chain_SubFilter( p_sys->p_chain, render_osd_date );
+    vlc_mutex_unlock( &p_sys->chain_lock );
 
-    /* */
-    p_blend->fmt_in.video = *p_in_fmt;
+    vlc_mutex_lock( &p_sys->lock );
 
-    /* */
-    p_blend->fmt_out.video.i_width =
-    p_blend->fmt_out.video.i_visible_width = i_out_width;
-    p_blend->fmt_out.video.i_height =
-    p_blend->fmt_out.video.i_visible_height = i_out_height;
+    /* Create a list of channels */
+    int pi_channel[VOUT_MAX_SUBPICTURES];
+    int i_channel_count = 0;
 
-    /* */
-    if( !p_blend->p_module )
-        p_blend->p_module = module_need( p_blend, "video blending", 0, 0 );
+    for( int i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
+    {
+        spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
+        if( !p_entry->p_subpicture || p_entry->b_reject )
+            continue;
+        const int i_channel = p_entry->p_subpicture->i_channel;
+        int i;
+        for( i = 0; i < i_channel_count; i++ )
+        {
+            if( pi_channel[i] == i_channel )
+                break;
+        }
+        if( i_channel_count <= i )
+            pi_channel[i_channel_count++] = i_channel;
+    }
+
+    /* We get an easily parsable chained list of subpictures which
+     * ends with NULL since p_subpic was initialized to NULL. */
+    for( int i = 0; i < i_channel_count; i++ )
+    {
+        const int i_channel = pi_channel[i];
+        subpicture_t *p_available_subpic[VOUT_MAX_SUBPICTURES];
+        bool         pb_available_late[VOUT_MAX_SUBPICTURES];
+        int          i_available = 0;
+
+        mtime_t      start_date = render_subtitle_date;
+        mtime_t      ephemer_subtitle_date = 0;
+        mtime_t      ephemer_osd_date = 0;
+        int64_t      i_ephemer_subtitle_order = INT64_MIN;
+        int64_t      i_ephemer_system_order = INT64_MIN;
+        int i_index;
+
+        /* Select available pictures */
+        for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
+        {
+            spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_index];
+            subpicture_t *p_current = p_entry->p_subpicture;
+            bool b_stop_valid;
+            bool b_late;
+
+            if( !p_current || p_entry->b_reject )
+            {
+                if( p_entry->b_reject )
+                    SpuHeapDeleteAt( &p_sys->heap, i_index );
+                continue;
+            }
+
+            if( p_current->i_channel != i_channel ||
+                ( b_subtitle_only && !p_current->b_subtitle ) )
+            {
+                continue;
+            }
+            const mtime_t render_date = p_current->b_subtitle ? render_subtitle_date : render_osd_date;
+            if( render_date &&
+                render_date < p_current->i_start )
+            {
+                /* Too early, come back next monday */
+                continue;
+            }
+
+            mtime_t *pi_ephemer_date  = p_current->b_subtitle ? &ephemer_subtitle_date : &ephemer_osd_date;
+            int64_t *pi_ephemer_order = p_current->b_subtitle ? &i_ephemer_subtitle_order : &i_ephemer_system_order;
+            if( p_current->i_start >= *pi_ephemer_date )
+            {
+                *pi_ephemer_date = p_current->i_start;
+                if( p_current->i_order > *pi_ephemer_order )
+                    *pi_ephemer_order = p_current->i_order;
+            }
+
+            b_stop_valid = !p_current->b_ephemer || p_current->i_stop > p_current->i_start;
+
+            b_late = b_stop_valid && p_current->i_stop <= render_date;
+
+            /* start_date will be used for correct automatic overlap support
+             * in case picture that should not be displayed anymore (display_time)
+             * overlap with a picture to be displayed (p_current->i_start)  */
+            if( p_current->b_subtitle && !b_late && !p_current->b_ephemer )
+                start_date = p_current->i_start;
+
+            /* */
+            p_available_subpic[i_available] = p_current;
+            pb_available_late[i_available] = b_late;
+            i_available++;
+        }
+
+        /* Only forced old picture display at the transition */
+        if( start_date < p_sys->i_last_sort_date )
+            start_date = p_sys->i_last_sort_date;
+        if( start_date <= 0 )
+            start_date = INT64_MAX;
+
+        /* Select pictures to be displayed */
+        for( i_index = 0; i_index < i_available; i_index++ )
+        {
+            subpicture_t *p_current = p_available_subpic[i_index];
+            bool b_late = pb_available_late[i_index];
+
+            const mtime_t stop_date = p_current->b_subtitle ? __MAX( start_date, p_sys->i_last_sort_date ) : render_osd_date;
+            const mtime_t ephemer_date = p_current->b_subtitle ? ephemer_subtitle_date : ephemer_osd_date;
+            const int64_t i_ephemer_order = p_current->b_subtitle ? i_ephemer_subtitle_order : i_ephemer_system_order;
+
+            /* Destroy late and obsolete ephemer subpictures */
+            bool b_rejet = b_late && p_current->i_stop <= stop_date;
+            if( p_current->b_ephemer )
+            {
+                if( p_current->i_start < ephemer_date )
+                    b_rejet = true;
+                else if( p_current->i_start == ephemer_date &&
+                         p_current->i_order < i_ephemer_order )
+                    b_rejet = true;
+            }
+
+            if( b_rejet )
+                SpuHeapDeleteSubpicture( &p_sys->heap, p_current );
+            else
+                SubpictureChain( &p_subpic, p_current );
+        }
+    }
+
+    p_sys->i_last_sort_date = render_subtitle_date;
+    vlc_mutex_unlock( &p_sys->lock );
+
+    return p_subpic;
+}
+
+void spu_OffsetSubtitleDate( spu_t *p_spu, mtime_t i_duration )
+{
+    spu_private_t *p_sys = p_spu->p;
+
+    vlc_mutex_lock( &p_sys->lock );
+    for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
+    {
+        spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i];
+        subpicture_t *p_current = p_entry->p_subpicture;
+
+        if( p_current && p_current->b_subtitle )
+        {
+            if( p_current->i_start > 0 )
+                p_current->i_start += i_duration;
+            if( p_current->i_stop > 0 )
+                p_current->i_stop += i_duration;
+        }
+    }
+    vlc_mutex_unlock( &p_sys->lock );
+}
+
+int spu_RegisterChannel( spu_t *p_spu )
+{
+    spu_private_t *p_sys = p_spu->p;
+
+    vlc_mutex_lock( &p_sys->lock );
+    int i_channel = p_sys->i_channel++;
+    vlc_mutex_unlock( &p_sys->lock );
+
+    return i_channel;
+}
+
+void spu_ClearChannel( spu_t *p_spu, int i_channel )
+{
+    spu_private_t *p_sys = p_spu->p;
+
+    vlc_mutex_lock( &p_sys->lock );
+
+    for( int i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
+    {
+        spu_heap_entry_t *p_entry = &p_sys->heap.p_entry[i_subpic];
+        subpicture_t *p_subpic = p_entry->p_subpicture;
+
+        if( !p_subpic )
+            continue;
+        if( p_subpic->i_channel != i_channel && ( i_channel != -1 || p_subpic->i_channel == SPU_DEFAULT_CHANNEL ) )
+            continue;
+
+        /* You cannot delete subpicture outside of spu_SortSubpictures */
+        p_entry->b_reject = true;
+    }
+
+    vlc_mutex_unlock( &p_sys->lock );
+}
+
+void spu_ChangeFilters( spu_t *p_spu, const char *psz_filters )
+{
+    spu_private_t *p_sys = p_spu->p;
+
+    vlc_mutex_lock( &p_sys->lock );
+
+    free( p_sys->psz_chain_update );
+    p_sys->psz_chain_update = strdup( psz_filters );
+
+    vlc_mutex_unlock( &p_sys->lock );
+}
+
+void spu_ChangeMargin( spu_t *p_spu, int i_margin )
+{
+    spu_private_t *p_sys = p_spu->p;
+
+    vlc_mutex_lock( &p_sys->lock );
+    p_sys->i_margin = i_margin;
+    vlc_mutex_unlock( &p_sys->lock );
+}
+
+/* */
+static void SubpictureChain( subpicture_t **pp_head, subpicture_t *p_subpic )
+{
+    p_subpic->p_next = *pp_head;
+
+    *pp_head = p_subpic;
+}
+
+/*****************************************************************************
+ * heap managment
+ *****************************************************************************/
+static void SpuHeapInit( spu_heap_t *p_heap )
+{
+    for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
+    {
+        spu_heap_entry_t *e = &p_heap->p_entry[i];
+
+        e->p_subpicture = NULL;
+        e->b_reject = false;
+    }
+}
+
+static int SpuHeapPush( spu_heap_t *p_heap, subpicture_t *p_subpic )
+{
+    for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
+    {
+        spu_heap_entry_t *e = &p_heap->p_entry[i];
+
+        if( e->p_subpicture )
+            continue;
+
+        e->p_subpicture = p_subpic;
+        e->b_reject = false;
+        return VLC_SUCCESS;
+    }
+    return VLC_EGENERIC;
+}
+
+static void SpuHeapDeleteAt( spu_heap_t *p_heap, int i_index )
+{
+    spu_heap_entry_t *e = &p_heap->p_entry[i_index];
+
+    if( e->p_subpicture )
+        subpicture_Delete( e->p_subpicture );
+
+    e->p_subpicture = NULL;
+}
+
+static int SpuHeapDeleteSubpicture( spu_heap_t *p_heap, subpicture_t *p_subpic )
+{
+    for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
+    {
+        spu_heap_entry_t *e = &p_heap->p_entry[i];
+
+        if( e->p_subpicture != p_subpic )
+            continue;
+
+        SpuHeapDeleteAt( p_heap, i );
+        return VLC_SUCCESS;
+    }
+    return VLC_EGENERIC;
 }
+
+static void SpuHeapClean( spu_heap_t *p_heap )
+{
+    for( int i = 0; i < VOUT_MAX_SUBPICTURES; i++ )
+    {
+        spu_heap_entry_t *e = &p_heap->p_entry[i];
+        if( e->p_subpicture )
+            subpicture_Delete( e->p_subpicture );
+    }
+}
+
+static void FilterRelease( filter_t *p_filter )
+{
+    if( p_filter->p_module )
+        module_unneed( p_filter, p_filter->p_module );
+    if( p_filter->p_owner )
+        free( p_filter->p_owner );
+
+    vlc_object_release( p_filter );
+}
+
 static void SpuRenderCreateAndLoadText( spu_t *p_spu )
 {
     filter_t *p_text;
@@ -565,6 +853,9 @@ static void SpuRenderCreateAndLoadText( spu_t *p_spu )
     if( !p_text )
         return;
 
+    p_text->p_owner = xmalloc( sizeof(*p_text->p_owner) );
+    p_text->p_owner->p_spu = p_spu;
+
     es_format_Init( &p_text->fmt_in, VIDEO_ES, 0 );
 
     es_format_Init( &p_text->fmt_out, VIDEO_ES, 0 );
@@ -573,8 +864,7 @@ static void SpuRenderCreateAndLoadText( spu_t *p_spu )
     p_text->fmt_out.video.i_height =
     p_text->fmt_out.video.i_visible_height = 32;
 
-    p_text->pf_sub_buffer_new = spu_new_buffer;
-    p_text->pf_sub_buffer_del = spu_del_buffer;
+    p_text->pf_get_attachments = spu_get_attachments;
 
     vlc_object_attach( p_text, p_spu );
 
@@ -590,6 +880,12 @@ static void SpuRenderCreateAndLoadText( spu_t *p_spu )
 
     if( !p_text->p_module )
         p_text->p_module = module_need( p_text, "text renderer", NULL, false );
+
+    /* Create a few variables used for enhanced text rendering */
+    var_Create( p_text, "spu-duration", VLC_VAR_TIME );
+    var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
+    var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
+    var_Create( p_text, "scale", VLC_VAR_INTEGER );
 }
 
 static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
@@ -613,11 +909,11 @@ static filter_t *CreateAndLoadScale( vlc_object_t *p_obj,
     p_scale->fmt_out.video.i_width =
     p_scale->fmt_out.video.i_height = b_resize ? 16 : 32;
 
-    p_scale->pf_vout_buffer_new = spu_new_video_buffer;
-    p_scale->pf_vout_buffer_del = spu_del_video_buffer;
+    p_scale->pf_video_buffer_new = spu_new_video_buffer;
+    p_scale->pf_video_buffer_del = spu_del_video_buffer;
 
     vlc_object_attach( p_scale, p_obj );
-    p_scale->p_module = module_need( p_scale, "video filter2", 0, 0 );
+    p_scale->p_module = module_need( p_scale, "video filter2", NULL, false );
 
     return p_scale;
 }
@@ -628,20 +924,20 @@ static void SpuRenderCreateAndLoadScale( spu_t *p_spu )
     /* XXX p_spu->p_scale is used for all conversion/scaling except yuvp to
      * yuva/rgba */
     p_spu->p->p_scale = CreateAndLoadScale( VLC_OBJECT(p_spu),
-                                            VLC_FOURCC_YUVA, VLC_FOURCC_YUVA, true );
+                                            VLC_CODEC_YUVA, VLC_CODEC_YUVA, true );
     /* This one is used for YUVP to YUVA/RGBA without scaling
      * FIXME rename it */
     p_spu->p->p_scale_yuvp = CreateAndLoadScale( VLC_OBJECT(p_spu),
-                                                 VLC_FOURCC_YUVP, VLC_FOURCC_YUVA, false );
+                                                 VLC_CODEC_YUVP, VLC_CODEC_YUVA, false );
 }
 
 static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
                            subpicture_t *p_subpic, subpicture_region_t *p_region,
-                           int i_min_scale_ratio )
+                           int i_min_scale_ratio, mtime_t render_date )
 {
     filter_t *p_text = p_spu->p->p_text;
 
-    assert( p_region->fmt.i_chroma == VLC_FOURCC_TEXT );
+    assert( p_region->fmt.i_chroma == VLC_CODEC_TEXT );
 
     if( !p_text || !p_text->p_module )
         goto exit;
@@ -665,16 +961,8 @@ static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
      * least show up on screen, but the effect won't change
      * the text over time.
      */
-
-    /* FIXME why these variables are recreated every time and not
-     * when text renderer module was created ? */
-    var_Create( p_text, "spu-duration", VLC_VAR_TIME );
-    var_Create( p_text, "spu-elapsed", VLC_VAR_TIME );
-    var_Create( p_text, "text-rerender", VLC_VAR_BOOL );
-    var_Create( p_text, "scale", VLC_VAR_INTEGER );
-
     var_SetTime( p_text, "spu-duration", p_subpic->i_stop - p_subpic->i_start );
-    var_SetTime( p_text, "spu-elapsed", mdate() - p_subpic->i_start );
+    var_SetTime( p_text, "spu-elapsed", render_date );
     var_SetBool( p_text, "text-rerender", false );
     var_SetInteger( p_text, "scale", i_min_scale_ratio );
 
@@ -688,11 +976,6 @@ static void SpuRenderText( spu_t *p_spu, bool *pb_rerender_text,
     }
     *pb_rerender_text = var_GetBool( p_text, "text-rerender" );
 
-    var_Destroy( p_text, "spu-duration" );
-    var_Destroy( p_text, "spu-elapsed" );
-    var_Destroy( p_text, "text-rerender" );
-    var_Destroy( p_text, "scale" );
-
 exit:
     p_region->i_align |= SUBPICTURE_RENDERED;
 }
@@ -700,12 +983,6 @@ exit:
 /**
  * A few scale functions helpers.
  */
-typedef struct
-{
-    int w;
-    int h;
-} spu_scale_t;
-
 static spu_scale_t spu_scale_create( int w, int h )
 {
     spu_scale_t s = { .w = w, .h = h };
@@ -715,7 +992,7 @@ static spu_scale_t spu_scale_create( int w, int h )
         s.h = SCALE_UNIT;
     return s;
 }
-static spu_scale_t spu_scale_unit(void )
+static spu_scale_t spu_scale_unit( void )
 {
     return spu_scale_create( SCALE_UNIT, SCALE_UNIT );
 }
@@ -744,17 +1021,6 @@ static int spu_invscale_h( int v, const spu_scale_t s )
 /**
  * A few area functions helpers
  */
-
-typedef struct
-{
-    int i_x;
-    int i_y;
-    int i_width;
-    int i_height;
-
-    spu_scale_t scale;
-} spu_area_t;
-
 static spu_area_t spu_area_create( int x, int y, int w, int h, spu_scale_t s )
 {
     spu_area_t a = { .i_x = x, .i_y = y, .i_width = w, .i_height = h, .scale = s };
@@ -806,15 +1072,12 @@ static bool spu_area_overlap( spu_area_t a, spu_area_t b )
  * Avoid area overlapping
  */
 static void SpuAreaFixOverlap( spu_area_t *p_dst,
-                               const spu_area_t *p_master,
                                const spu_area_t *p_sub, int i_sub, int i_align )
 {
     spu_area_t a = spu_area_scaled( *p_dst );
     bool b_moved = false;
     bool b_ok;
 
-    assert( p_master->i_x == 0 && p_master->i_y == 0 );
-
     /* Check for overlap
      * XXX It is not fast O(n^2) but we should not have a lot of region */
     do
@@ -831,8 +1094,6 @@ static void SpuAreaFixOverlap( spu_area_t *p_dst,
             {
                 /* We go down */
                 int i_y = sub.i_y + sub.i_height;
-                if( i_y + a.i_height > p_master->i_height )
-                    break;
                 a.i_y = i_y;
                 b_moved = true;
             }
@@ -840,8 +1101,6 @@ static void SpuAreaFixOverlap( spu_area_t *p_dst,
             {
                 /* We go up */
                 int i_y = sub.i_y - a.i_height;
-                if( i_y < 0 )
-                    break;
                 a.i_y = i_y;
                 b_moved = true;
             }
@@ -862,13 +1121,31 @@ static void SpuAreaFixOverlap( spu_area_t *p_dst,
 }
 
 
-/**
- * Place a region
- */
+static void SpuAreaFitInside( spu_area_t *p_area, const spu_area_t *p_boundary )
+{
+  spu_area_t a = spu_area_scaled( *p_area );
+
+  const int i_error_x = (a.i_x + a.i_width) - p_boundary->i_width;
+  if( i_error_x > 0 )
+      a.i_x -= i_error_x;
+  if( a.i_x < 0 )
+      a.i_x = 0;
+
+  const int i_error_y = (a.i_y + a.i_height) - p_boundary->i_height;
+  if( i_error_y > 0 )
+      a.i_y -= i_error_y;
+  if( a.i_y < 0 )
+      a.i_y = 0;
+
+  *p_area = spu_area_unscaled( a, p_area->scale );
+}
+
+/**
+ * Place a region
+ */
 static void SpuRegionPlace( int *pi_x, int *pi_y,
                             const subpicture_t *p_subpic,
-                            const subpicture_region_t *p_region,
-                            int i_margin_y )
+                            const subpicture_region_t *p_region )
 {
     const int i_delta_x = p_region->i_x;
     const int i_delta_y = p_region->i_y;
@@ -907,23 +1184,6 @@ static void SpuRegionPlace( int *pi_x, int *pi_y,
         i_y = i_delta_y;
     }
 
-    /* Margin shifts all subpictures */
-    if( i_margin_y != 0 )
-        i_y -= i_margin_y;
-
-    /* Clamp offset to not go out of the screen (when possible) */
-    const int i_error_x = (i_x + p_region->fmt.i_width) - p_subpic->i_original_picture_width;
-    if( i_error_x > 0 )
-        i_x -= i_error_x;
-    if( i_x < 0 )
-        i_x = 0;
-
-    const int i_error_y = (i_y + p_region->fmt.i_height) - p_subpic->i_original_picture_height;
-    if( i_error_y > 0 )
-        i_y -= i_error_y;
-    if( i_y < 0 )
-        i_y = 0;
-
     *pi_x = i_x;
     *pi_y = i_y;
 }
@@ -959,7 +1219,8 @@ static void SpuRenderRegion( spu_t *p_spu,
                              subpicture_t *p_subpic, subpicture_region_t *p_region,
                              const spu_scale_t scale_size,
                              const video_format_t *p_fmt,
-                             const spu_area_t *p_subtitle_area, int i_subtitle_area )
+                             const spu_area_t *p_subtitle_area, int i_subtitle_area,
+                             mtime_t render_date )
 {
     spu_private_t *p_sys = p_spu->p;
 
@@ -972,20 +1233,19 @@ static void SpuRenderRegion( spu_t *p_spu,
     video_format_t region_fmt;
     picture_t *p_region_picture;
 
-    vlc_assert_locked( &p_sys->subpicture_lock );
-
     /* Invalidate area by default */
     *p_area = spu_area_create( 0,0, 0,0, scale_size );
 
     /* Render text region */
-    if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
+    if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
     {
         const int i_min_scale_ratio = SCALE_UNIT; /* FIXME what is the right value? (scale_size is not) */
-        SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region, i_min_scale_ratio );
+        SpuRenderText( p_spu, &b_rerender_text, p_subpic, p_region,
+                       i_min_scale_ratio, render_date );
         b_restore_format = b_rerender_text;
 
         /* Check if the rendering has failed ... */
-        if( p_region->fmt.i_chroma == VLC_FOURCC_TEXT )
+        if( p_region->fmt.i_chroma == VLC_CODEC_TEXT )
             goto exit;
     }
 
@@ -993,7 +1253,7 @@ static void SpuRenderRegion( spu_t *p_spu,
      * FIXME b_force_palette and b_force_crop are applied to all subpictures using palette
      * instead of only the right one (being the dvd spu).
      */
-    const bool b_using_palette = p_region->fmt.i_chroma == VLC_FOURCC_YUVP;
+    const bool b_using_palette = p_region->fmt.i_chroma == VLC_CODEC_YUVP;
     const bool b_force_palette = b_using_palette && p_sys->b_force_palette;
     const bool b_force_crop    = b_force_palette && p_sys->b_force_crop;
     bool b_changed_palette     = false;
@@ -1009,7 +1269,7 @@ static void SpuRenderRegion( spu_t *p_spu,
     /* Place the picture
      * We compute the position in the rendered size */
     SpuRegionPlace( &i_x_offset, &i_y_offset,
-                    p_subpic, p_region, i_margin_y );
+                    p_subpic, p_region );
 
     /* Save this position for subtitle overlap support
      * it is really important that there are given without scale_size applied */
@@ -1020,16 +1280,25 @@ static void SpuRenderRegion( spu_t *p_spu,
     /* Handle overlapping subtitles when possible */
     if( p_subpic->b_subtitle && !p_subpic->b_absolute )
     {
-        spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
-                                              spu_scale_unit() );
-
-        SpuAreaFixOverlap( p_area, &display, p_subtitle_area, i_subtitle_area,
+        SpuAreaFixOverlap( p_area, p_subtitle_area, i_subtitle_area,
                            p_region->i_align );
     }
 
+    /* we copy the area: for the subtitle overlap support we want
+     * to only save the area without margin applied */
+    spu_area_t restrained = *p_area;
+
+    /* apply margin to subtitles and correct if they go over the picture edge */
+    if( p_subpic->b_subtitle )
+        restrained.i_y -= i_margin_y;
+
+    spu_area_t display = spu_area_create( 0, 0, p_fmt->i_width, p_fmt->i_height,
+                                          spu_scale_unit() );
+    SpuAreaFitInside( &restrained, &display );
+
     /* Fix the position for the current scale_size */
-    i_x_offset = spu_scale_w( p_area->i_x, p_area->scale );
-    i_y_offset = spu_scale_h( p_area->i_y, p_area->scale );
+    i_x_offset = spu_scale_w( restrained.i_x, restrained.scale );
+    i_y_offset = spu_scale_h( restrained.i_y, restrained.scale );
 
     /* */
     if( b_force_palette )
@@ -1086,13 +1355,13 @@ static void SpuRenderRegion( spu_t *p_spu,
 
             if( b_changed )
             {
-                SpuRegionPrivateDestroy( p_private );
+                subpicture_region_private_Delete( p_private );
                 p_region->p_private = NULL;
             }
         }
 
         /* Scale if needed into cache */
-        if( !p_region->p_private )
+        if( !p_region->p_private && i_dst_width > 0 && i_dst_height > 0 )
         {
             filter_t *p_scale = p_sys->p_scale;
 
@@ -1108,7 +1377,7 @@ static void SpuRenderRegion( spu_t *p_spu,
 
                 /* TODO converting to RGBA for RGB video output is better */
                 p_scale_yuvp->fmt_out.video = p_region->fmt;
-                p_scale_yuvp->fmt_out.video.i_chroma = VLC_FOURCC_YUVA;
+                p_scale_yuvp->fmt_out.video.i_chroma = VLC_CODEC_YUVA;
 
                 p_picture = p_scale_yuvp->pf_video_filter( p_scale_yuvp, p_picture );
                 if( !p_picture )
@@ -1142,19 +1411,22 @@ static void SpuRenderRegion( spu_t *p_spu,
             }
 
             /* */
-            p_region->p_private = SpuRegionPrivateCreate( &p_picture->format );
-            if( p_region->p_private )
+            if( p_picture )
             {
-                p_region->p_private->p_picture = p_picture;
-                if( !p_region->p_private->p_picture )
+                p_region->p_private = subpicture_region_private_New( &p_picture->format );
+                if( p_region->p_private )
                 {
-                    SpuRegionPrivateDestroy( p_region->p_private );
-                    p_region->p_private = NULL;
+                    p_region->p_private->p_picture = p_picture;
+                    if( !p_region->p_private->p_picture )
+                    {
+                        subpicture_region_private_Delete( p_region->p_private );
+                        p_region->p_private = NULL;
+                    }
+                }
+                else
+                {
+                    picture_Release( p_picture );
                 }
-            }
-            else
-            {
-                picture_Release( p_picture );
             }
         }
 
@@ -1205,19 +1477,15 @@ static void SpuRenderRegion( spu_t *p_spu,
     }
 
     /* Update the blender */
-    SpuRenderUpdateBlend( p_spu, p_fmt->i_width, p_fmt->i_height, &region_fmt );
-
-    if( p_sys->p_blend->p_module )
-    {
-        const int i_alpha = SpuRegionAlpha( p_subpic, p_region );
-
-        p_sys->p_blend->pf_video_blend( p_sys->p_blend, p_pic_dst,
-            p_region_picture, i_x_offset, i_y_offset, i_alpha );
-    }
-    else
+    if( filter_ConfigureBlend( p_spu->p->p_blend,
+                               p_fmt->i_width, p_fmt->i_height,
+                               &region_fmt ) ||
+        filter_Blend( p_spu->p->p_blend,
+                      p_pic_dst, i_x_offset, i_y_offset,
+                      p_region_picture, SpuRegionAlpha( p_subpic, p_region ) ) )
     {
         msg_Err( p_spu, "blending %4.4s to %4.4s failed",
-                 (char *)&p_sys->p_blend->fmt_out.video.i_chroma,
+                 (char *)&p_sys->p_blend->fmt_in.video.i_chroma,
                  (char *)&p_sys->p_blend->fmt_out.video.i_chroma );
     }
 
@@ -1229,11 +1497,14 @@ exit:
          * pre-rendered state, so the next time through everything is
          * calculated again.
          */
-        picture_Release( p_region->p_picture );
-        p_region->p_picture = NULL;
+        if( p_region->p_picture )
+        {
+            picture_Release( p_region->p_picture );
+            p_region->p_picture = NULL;
+        }
         if( p_region->p_private )
         {
-            SpuRegionPrivateDestroy( p_region->p_private );
+            subpicture_region_private_Delete( p_region->p_private );
             p_region->p_private = NULL;
         }
         p_region->i_align &= ~SUBPICTURE_RENDERED;
@@ -1251,11 +1522,11 @@ static int IntegerCmp( int64_t i0, int64_t i1 )
     return i0 < i1 ? -1 : i0 > i1 ? 1 : 0;
 }
 /**
- * This function compares 2 subpictures using the following properties 
+ * This function compares 2 subpictures using the following properties
  * (ordered by priority)
  * 1. absolute positionning
  * 2. start time
- * 3. creation order
+ * 3. creation order (per channel)
  *
  * It can be used by qsort.
  *
@@ -1270,361 +1541,12 @@ static int SubpictureCmp( const void *s0, const void *s1 )
     r = IntegerCmp( !p_subpic0->b_absolute, !p_subpic1->b_absolute );
     if( !r )
         r = IntegerCmp( p_subpic0->i_start, p_subpic1->i_start );
+    if( !r )
+        r = IntegerCmp( p_subpic0->i_channel, p_subpic1->i_channel );
     if( !r )
         r = IntegerCmp( p_subpic0->i_order, p_subpic1->i_order );
     return r;
 }
-/**
- * This function renders all sub picture units in the list.
- */
-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 )
-{
-    spu_private_t *p_sys = p_spu->p;
-
-    const int i_source_video_width  = p_fmt_src->i_width;
-    const int i_source_video_height = p_fmt_src->i_height;
-    const mtime_t i_current_date = mdate();
-
-    unsigned int i_subpicture;
-    subpicture_t *pp_subpicture[VOUT_MAX_SUBPICTURES];
-
-    unsigned int i_subtitle_region_count;
-    spu_area_t p_subtitle_area_buffer[VOUT_MAX_SUBPICTURES];
-    spu_area_t *p_subtitle_area;
-    int i_subtitle_area;
-
-    /* Get lock */
-    vlc_mutex_lock( &p_sys->subpicture_lock );
-
-    /* Preprocess subpictures */
-    i_subpicture = 0;
-    i_subtitle_region_count = 0;
-    for( subpicture_t * p_subpic = p_subpic_list;
-            p_subpic != NULL && p_subpic->i_status != FREE_SUBPICTURE; /* Check again status (as we where unlocked) */
-                p_subpic = p_subpic->p_next )
-    {
-        /* */
-        if( p_subpic->pf_pre_render )
-            p_subpic->pf_pre_render( p_spu, p_subpic, p_fmt_dst );
-
-        if( p_subpic->pf_update_regions )
-        {
-            video_format_t fmt_org = *p_fmt_dst;
-            fmt_org.i_width =
-            fmt_org.i_visible_width = i_source_video_width;
-            fmt_org.i_height =
-            fmt_org.i_visible_height = i_source_video_height;
-
-            p_subpic->pf_update_regions( p_spu, p_subpic, &fmt_org, i_current_date );
-        }
-
-        /* */
-        if( p_subpic->b_subtitle )
-        {
-            for( subpicture_region_t *r = p_subpic->p_region; r != NULL; r = r->p_next )
-                i_subtitle_region_count++;
-        }
-
-        /* */
-        pp_subpicture[i_subpicture++] = p_subpic;
-    }
-
-    /* Be sure we have at least 1 picture to process */
-    if( i_subpicture <= 0 )
-    {
-        vlc_mutex_unlock( &p_sys->subpicture_lock );
-        return;
-    }
-
-    /* Now order subpicture array
-     * XXX The order is *really* important for overlap subtitles positionning */
-    qsort( pp_subpicture, i_subpicture, sizeof(*pp_subpicture), SubpictureCmp );
-
-    /* Allocate area array for subtitle overlap */
-    i_subtitle_area = 0;
-    p_subtitle_area = p_subtitle_area_buffer;
-    if( i_subtitle_region_count > sizeof(p_subtitle_area_buffer)/sizeof(*p_subtitle_area_buffer) )
-        p_subtitle_area = calloc( i_subtitle_region_count, sizeof(*p_subtitle_area) );
-
-    /* Create the blending module */
-    if( !p_sys->p_blend )
-        SpuRenderCreateBlend( p_spu, p_fmt_dst->i_chroma, p_fmt_dst->i_aspect );
-
-    /* Process all subpictures and regions (in the right order) */
-    for( unsigned int i_index = 0; i_index < i_subpicture; i_index++ )
-    {
-        subpicture_t *p_subpic = pp_subpicture[i_index];
-        subpicture_region_t *p_region;
-
-        if( !p_subpic->p_region )
-            continue;
-
-        /* FIXME when possible use a better rendering size than source size
-         * (max of display size and source size for example) FIXME */
-        int i_render_width  = p_subpic->i_original_picture_width;
-        int i_render_height = p_subpic->i_original_picture_height;
-        if( !i_render_width || !i_render_height )
-        {
-            if( i_render_width != 0 || i_render_height != 0 )
-                msg_Err( p_spu, "unsupported original picture size %dx%d",
-                         i_render_width, i_render_height );
-
-            p_subpic->i_original_picture_width  = i_render_width = i_source_video_width;
-            p_subpic->i_original_picture_height = i_render_height = i_source_video_height;
-        }
-
-        if( p_sys->p_text )
-        {
-            p_sys->p_text->fmt_out.video.i_width          =
-            p_sys->p_text->fmt_out.video.i_visible_width  = i_render_width;
-
-            p_sys->p_text->fmt_out.video.i_height         =
-            p_sys->p_text->fmt_out.video.i_visible_height = i_render_height;
-        }
-
-        /* Compute scaling from picture to source size */
-        spu_scale_t scale = spu_scale_createq( i_source_video_width,  i_render_width,
-                                               i_source_video_height, i_render_height );
-
-        /* Update scaling from source size to display size(p_fmt_dst) */
-        scale.w = scale.w * p_fmt_dst->i_width  / i_source_video_width;
-        scale.h = scale.h * p_fmt_dst->i_height / i_source_video_height;
-
-        /* Set default subpicture aspect ratio
-         * FIXME if we only handle 1 aspect ratio per picture, why is it set per
-         * region ? */
-        p_region = p_subpic->p_region;
-        if( !p_region->fmt.i_sar_num || !p_region->fmt.i_sar_den )
-        {
-            if( p_region->fmt.i_aspect != 0 )
-            {
-                p_region->fmt.i_sar_den = p_region->fmt.i_aspect;
-                p_region->fmt.i_sar_num = VOUT_ASPECT_FACTOR;
-            }
-            else
-            {
-                p_region->fmt.i_sar_den = p_fmt_dst->i_sar_den;
-                p_region->fmt.i_sar_num = p_fmt_dst->i_sar_num;
-            }
-        }
-
-        /* Take care of the aspect ratio */
-        if( p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den !=
-            p_region->fmt.i_sar_den * p_fmt_dst->i_sar_num )
-        {
-            /* FIXME FIXME what about region->i_x/i_y ? */
-            scale.w = scale.w *
-                (int64_t)p_region->fmt.i_sar_num * p_fmt_dst->i_sar_den /
-                p_region->fmt.i_sar_den / p_fmt_dst->i_sar_num;
-        }
-
-        /* Render all regions
-         * We always transform non absolute subtitle into absolute one on the
-         * first rendering to allow good subtitle overlap support.
-         */
-        for( p_region = p_subpic->p_region; p_region != NULL; p_region = p_region->p_next )
-        {
-            spu_area_t area;
-
-            /* Check scale validity */
-            if( scale.w <= 0 || scale.h <= 0 )
-                continue;
-
-            /* */
-            SpuRenderRegion( p_spu, p_pic_dst, &area,
-                             p_subpic, p_region, scale, p_fmt_dst,
-                             p_subtitle_area, i_subtitle_area );
-
-            if( p_subpic->b_subtitle )
-            {
-                area = spu_area_unscaled( area, scale );
-                if( !p_subpic->b_absolute && area.i_width > 0 && area.i_height > 0 )
-                {
-                    p_region->i_x = area.i_x;
-                    p_region->i_y = area.i_y;
-                }
-                if( p_subtitle_area )
-                    p_subtitle_area[i_subtitle_area++] = area;
-            }
-        }
-        if( p_subpic->b_subtitle )
-            p_subpic->b_absolute = true;
-    }
-
-    /* */
-    if( p_subtitle_area != p_subtitle_area_buffer )
-        free( p_subtitle_area );
-
-    vlc_mutex_unlock( &p_sys->subpicture_lock );
-}
-
-/*****************************************************************************
- * spu_SortSubpictures: find the subpictures to display
- *****************************************************************************
- * This function parses all subpictures and decides which ones need to be
- * displayed. This operation does not need lock, since only READY_SUBPICTURE
- * are handled. If no picture has been selected, display_date will depend on
- * the subpicture.
- * We also check for ephemer DVD subpictures (subpictures that have
- * to be removed if a newer one is available), which makes it a lot
- * more difficult to guess if a subpicture has to be rendered or not.
- *****************************************************************************/
-subpicture_t *spu_SortSubpictures( spu_t *p_spu, mtime_t display_date,
-                                   bool b_paused, bool b_subtitle_only )
-{
-    spu_private_t *p_sys = p_spu->p;
-    int i_channel;
-    subpicture_t *p_subpic = NULL;
-
-    /* Run subpicture filters */
-    filter_chain_SubFilter( p_sys->p_chain, display_date );
-
-    /* We get an easily parsable chained list of subpictures which
-     * ends with NULL since p_subpic was initialized to NULL. */
-    for( i_channel = 0; i_channel < p_sys->i_channel; i_channel++ )
-    {
-        subpicture_t *p_ephemer = NULL;
-        mtime_t      ephemer_date = 0;
-        int i_index;
-
-        for( i_index = 0; i_index < VOUT_MAX_SUBPICTURES; i_index++ )
-        {
-            subpicture_t *p_current = &p_sys->p_subpicture[i_index];
-
-            if( p_current->i_channel != i_channel ||
-                p_current->i_status != READY_SUBPICTURE ||
-                ( b_subtitle_only && !p_current->b_subtitle ) )
-            {
-                continue;
-            }
-            if( display_date &&
-                display_date < p_current->i_start )
-            {
-                /* Too early, come back next monday */
-                continue;
-            }
-
-            if( p_current->i_start > ephemer_date )
-                ephemer_date = p_current->i_start;
-
-            if( display_date > p_current->i_stop &&
-                ( !p_current->b_ephemer || p_current->i_stop > p_current->i_start ) &&
-                !( p_current->b_subtitle && b_paused ) ) /* XXX Assume that subtitle are pausable */
-            {
-                /* Too late, destroy the subpic */
-                spu_DestroySubpicture( p_spu, &p_sys->p_subpicture[i_index] );
-                continue;
-            }
-
-            /* If this is an ephemer subpic, add it to our list */
-            if( p_current->b_ephemer )
-            {
-                p_current->p_next = p_ephemer;
-                p_ephemer = p_current;
-
-                continue;
-            }
-
-            p_current->p_next = p_subpic;
-            p_subpic = p_current;
-        }
-
-        /* If we found ephemer subpictures, check if they have to be
-         * displayed or destroyed */
-        while( p_ephemer != NULL )
-        {
-            subpicture_t *p_tmp = p_ephemer;
-            p_ephemer = p_ephemer->p_next;
-
-            if( p_tmp->i_start < ephemer_date )
-            {
-                /* Ephemer subpicture has lived too long */
-                spu_DestroySubpicture( p_spu, p_tmp );
-            }
-            else
-            {
-                /* Ephemer subpicture can still live a bit */
-                p_tmp->p_next = p_subpic;
-                p_subpic = p_tmp;
-            }
-        }
-    }
-
-    return p_subpic;
-}
-
-/*****************************************************************************
- * SpuClearChannel: clear an spu channel
- *****************************************************************************
- * This function destroys the subpictures which belong to the spu channel
- * corresponding to i_channel_id.
- *****************************************************************************/
-static void SpuClearChannel( spu_t *p_spu, int i_channel, bool b_locked )
-{
-    spu_private_t *p_sys = p_spu->p;
-    int          i_subpic;                               /* subpicture index */
-    subpicture_t *p_subpic = NULL;                  /* first free subpicture */
-
-    if( !b_locked )
-        vlc_mutex_lock( &p_sys->subpicture_lock );
-
-    for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
-    {
-        p_subpic = &p_sys->p_subpicture[i_subpic];
-        if( p_subpic->i_status == FREE_SUBPICTURE
-            || ( p_subpic->i_status != RESERVED_SUBPICTURE
-                 && p_subpic->i_status != READY_SUBPICTURE ) )
-        {
-            continue;
-        }
-
-        if( p_subpic->i_channel == i_channel )
-        {
-            subpicture_region_ChainDelete( p_subpic->p_region );
-            p_subpic->p_region = NULL;
-
-            if( p_subpic->pf_destroy ) p_subpic->pf_destroy( p_subpic );
-            p_subpic->i_status = FREE_SUBPICTURE;
-        }
-    }
-
-    if( !b_locked )
-        vlc_mutex_unlock( &p_sys->subpicture_lock );
-}
-
-/*****************************************************************************
- * spu_ControlDefault: default methods for the subpicture unit control.
- *****************************************************************************/
-static int SpuControl( spu_t *p_spu, int i_query, va_list args )
-{
-    spu_private_t *p_sys = p_spu->p;
-    int *pi, i;
-
-    switch( i_query )
-    {
-    case SPU_CHANNEL_REGISTER:
-        pi = (int *)va_arg( args, int * );
-        vlc_mutex_lock( &p_sys->subpicture_lock );
-        if( pi )
-            *pi = p_sys->i_channel++;
-        vlc_mutex_unlock( &p_sys->subpicture_lock );
-        break;
-
-    case SPU_CHANNEL_CLEAR:
-        i = (int)va_arg( args, int );
-        SpuClearChannel( p_spu, i, false );
-        break;
-
-    default:
-        msg_Dbg( p_spu, "control query not supported" );
-        return VLC_EGENERIC;
-    }
-
-    return VLC_SUCCESS;
-}
 
 /*****************************************************************************
  * Object variables callbacks
@@ -1641,14 +1563,14 @@ static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
     spu_private_t *p_sys = p_spu->p;
     vlc_value_t val;
 
-    vlc_mutex_lock( &p_sys->subpicture_lock );
+    vlc_mutex_lock( &p_sys->lock );
 
     p_sys->b_force_palette = false;
     p_sys->b_force_crop = false;
 
     if( var_Get( p_object, "highlight", &val ) || !val.b_bool )
     {
-        vlc_mutex_unlock( &p_sys->subpicture_lock );
+        vlc_mutex_unlock( &p_sys->lock );
         return;
     }
 
@@ -1663,7 +1585,7 @@ static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
         memcpy( p_sys->palette, val.p_address, 16 );
         p_sys->b_force_palette = true;
     }
-    vlc_mutex_unlock( &p_sys->subpicture_lock );
+    vlc_mutex_unlock( &p_sys->lock );
 
     msg_Dbg( p_object, "crop: %i,%i,%i,%i, palette forced: %i",
              p_sys->i_crop_x, p_sys->i_crop_y,
@@ -1679,7 +1601,8 @@ static void UpdateSPU( spu_t *p_spu, vlc_object_t *p_object )
 static int CropCallback( vlc_object_t *p_object, char const *psz_var,
                          vlc_value_t oldval, vlc_value_t newval, void *p_data )
 {
-    (void)psz_var; (void)oldval; (void)newval;
+    VLC_UNUSED(oldval); VLC_UNUSED(newval); VLC_UNUSED(psz_var);
+
     UpdateSPU( (spu_t *)p_data, p_object );
     return VLC_SUCCESS;
 }
@@ -1687,72 +1610,47 @@ static int CropCallback( vlc_object_t *p_object, char const *psz_var,
 /*****************************************************************************
  * Buffers allocation callbacks for the filters
  *****************************************************************************/
-static subpicture_t *sub_new_buffer( filter_t *p_filter )
+static int spu_get_attachments( filter_t *p_filter,
+                                input_attachment_t ***ppp_attachment,
+                                int *pi_attachment )
 {
-    filter_owner_sys_t *p_sys = p_filter->p_owner;
-    subpicture_t *p_subpicture = spu_CreateSubpicture( p_sys->p_spu );
-    if( p_subpicture ) p_subpicture->i_channel = p_sys->i_channel;
-    return p_subpicture;
-}
+    spu_t *p_spu = p_filter->p_owner->p_spu;
 
-static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
-{
-    filter_owner_sys_t *p_sys = p_filter->p_owner;
-    spu_DestroySubpicture( p_sys->p_spu, p_subpic );
+    int i_ret = VLC_EGENERIC;
+    if( p_spu->p->p_input )
+        i_ret = input_Control( (input_thread_t*)p_spu->p->p_input,
+                               INPUT_GET_ATTACHMENTS,
+                               ppp_attachment, pi_attachment );
+    return i_ret;
 }
 
-static subpicture_t *spu_new_buffer( filter_t *p_filter )
+static subpicture_t *sub_new_buffer( filter_t *p_filter )
 {
-    subpicture_t *p_subpic = calloc( 1, sizeof(subpicture_t) );
-    if( !p_subpic )
-        return NULL;
-
-    p_subpic->b_absolute = true;
-    p_subpic->i_alpha    = 0xFF;
+    filter_owner_sys_t *p_sys = p_filter->p_owner;
 
-    VLC_UNUSED(p_filter);
-    return p_subpic;
+    subpicture_t *p_subpicture = subpicture_New( NULL );
+    if( p_subpicture )
+        p_subpicture->i_channel = p_sys->i_channel;
+    return p_subpicture;
 }
-
-static void spu_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
+static void sub_del_buffer( filter_t *p_filter, subpicture_t *p_subpic )
 {
-    subpicture_region_ChainDelete( p_subpic->p_region );
-
-    VLC_UNUSED(p_filter);
-    free( p_subpic );
+    VLC_UNUSED( p_filter );
+    subpicture_Delete( p_subpic );
 }
-
 static picture_t *spu_new_video_buffer( filter_t *p_filter )
 {
     const video_format_t *p_fmt = &p_filter->fmt_out.video;
 
     VLC_UNUSED(p_filter);
-    return picture_New( p_fmt->i_chroma,
-                        p_fmt->i_width, p_fmt->i_height, p_fmt->i_aspect );
+    return picture_NewFromFormat( p_fmt );
 }
-
 static void spu_del_video_buffer( filter_t *p_filter, picture_t *p_picture )
 {
     VLC_UNUSED(p_filter);
     picture_Release( p_picture );
 }
 
-static int SubFilterCallback( vlc_object_t *p_object, char const *psz_var,
-                         vlc_value_t oldval, vlc_value_t newval, void *p_data )
-{
-    spu_t *p_spu = p_data;
-    spu_private_t *p_sys = p_spu->p;
-
-    VLC_UNUSED(p_object); VLC_UNUSED(oldval);
-    VLC_UNUSED(newval); VLC_UNUSED(psz_var);
-
-    vlc_mutex_lock( &p_sys->subpicture_lock );
-    filter_chain_Reset( p_sys->p_chain, NULL, NULL );
-    spu_ParseChain( p_spu );
-    vlc_mutex_unlock( &p_sys->subpicture_lock );
-    return VLC_SUCCESS;
-}
-
 static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
 {
     spu_t *p_spu = p_data;
@@ -1765,7 +1663,7 @@ static int SubFilterAllocationInit( filter_t *p_filter, void *p_data )
     p_filter->pf_sub_buffer_del = sub_del_buffer;
 
     p_filter->p_owner = p_sys;
-    spu_Control( p_spu, SPU_CHANNEL_REGISTER, &p_sys->i_channel );
+    p_sys->i_channel = spu_RegisterChannel( p_spu );
     p_sys->p_spu = p_spu;
 
     return VLC_SUCCESS;
@@ -1775,7 +1673,7 @@ static void SubFilterAllocationClean( filter_t *p_filter )
 {
     filter_owner_sys_t *p_sys = p_filter->p_owner;
 
-    SpuClearChannel( p_sys->p_spu, p_sys->i_channel, true );
+    spu_ClearChannel( p_sys->p_spu, p_sys->i_channel );
     free( p_filter->p_owner );
 }