@@ -157,8 +157,6 @@ static int config_input(AVFilterLink *inlink)

     return 0;

 }

-static int null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { return 0; }

-

 /* libass stores an RGBA color in the format RRGGBBTT, where TT is the transparency level */

 #define AR(c)  ( (c)>>24)

 #define AG(c)  (((c)>>16)&0xFF)

@@ -180,12 +178,11 @@ static void overlay_ass_image(AssContext *ass, AVFilterBufferRef *picref,

     }

 }

-static int end_frame(AVFilterLink *inlink)

+static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)

 {

     AVFilterContext *ctx = inlink->dst;

     AVFilterLink *outlink = ctx->outputs[0];

     AssContext *ass = ctx->priv;

-    AVFilterBufferRef *picref = inlink->cur_buf;

     int detect_change = 0;

     double time_ms = picref->pts * av_q2d(inlink->time_base) * 1000;

     ASS_Image *image = ass_render_frame(ass->renderer, ass->track,

@@ -196,20 +193,16 @@ static int end_frame(AVFilterLink *inlink)

     overlay_ass_image(ass, picref, image);

-    ff_draw_slice(outlink, 0, picref->video->h, 1);

-    return ff_end_frame(outlink);

+    return ff_filter_frame(outlink, picref);

 }

 static const AVFilterPad ass_inputs[] = {

     {

         .name             = "default",

         .type             = AVMEDIA_TYPE_VIDEO,

-        .get_video_buffer = ff_null_get_video_buffer,

-        .start_frame      = ff_null_start_frame,

-        .draw_slice       = null_draw_slice,

-        .end_frame        = end_frame,

+        .filter_frame     = filter_frame,

         .config_props     = config_input,

-        .min_perms        = AV_PERM_WRITE | AV_PERM_READ,

+        .min_perms        = AV_PERM_READ | AV_PERM_WRITE,

     },

     { NULL }

 };