@@ -307,22 +307,18 @@ static void process_chrominance(uint8_t *udst, uint8_t *vdst, const int dst_line

 #define TS2D(ts) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))

 #define TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))

-static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpic)

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

 {

     HueContext *hue = inlink->dst->priv;

     AVFilterLink *outlink = inlink->dst->outputs[0];

-    AVFilterBufferRef *buf_out;

+    AVFilterBufferRef *outpic;

-    outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);

-    if (!outlink->out_buf)

-        return AVERROR(ENOMEM);

-

-    avfilter_copy_buffer_ref_props(outlink->out_buf, inpic);

-    outlink->out_buf->video->w = outlink->w;

-    outlink->out_buf->video->h = outlink->h;

-    buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);

-    if (!buf_out)

+    outpic = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);

+    if (!outpic) {

+        avfilter_unref_bufferp(&inpic);

         return AVERROR(ENOMEM);

+    }

+    avfilter_copy_buffer_ref_props(outpic, inpic);

     if (!hue->flat_syntax) {

         hue->var_values[VAR_T]   = TS2T(inpic->pts, inlink->time_base);

@@ -356,35 +352,17 @@ static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpic)

     hue->var_values[VAR_N] += 1;

-    return ff_start_frame(outlink, buf_out);

-}

-

-static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)

-{

-    HueContext        *hue    = inlink->dst->priv;

-    AVFilterBufferRef *inpic  = inlink->cur_buf;

-    AVFilterBufferRef *outpic = inlink->dst->outputs[0]->out_buf;

-    uint8_t *inrow[3], *outrow[3]; // 0 : Y, 1 : U, 2 : V

-    int plane;

-

-    inrow[0]  = inpic->data[0]  + y * inpic->linesize[0];

-    outrow[0] = outpic->data[0] + y * outpic->linesize[0];

-

-    for (plane = 1; plane < 3; plane++) {

-        inrow[plane]  = inpic->data[plane]  + (y >> hue->vsub) * inpic->linesize[plane];

-        outrow[plane] = outpic->data[plane] + (y >> hue->vsub) * outpic->linesize[plane];

-    }

-

-    av_image_copy_plane(outrow[0], outpic->linesize[0],

-                        inrow[0],  inpic->linesize[0],

+    av_image_copy_plane(outpic->data[0], outpic->linesize[0],

+                        inpic->data[0],  inpic->linesize[0],

                         inlink->w, inlink->h);

-    process_chrominance(outrow[1], outrow[2], outpic->linesize[1],

-                        inrow[1], inrow[2], inpic->linesize[1],

+    process_chrominance(outpic->data[1], outpic->data[2], outpic->linesize[1],

+                        inpic->data[1],  inpic->data[2],  inpic->linesize[1],

                         inlink->w >> hue->hsub, inlink->h >> hue->vsub,

                         hue->hue_cos, hue->hue_sin);

-    return ff_draw_slice(inlink->dst->outputs[0], y, h, slice_dir);

+    avfilter_unref_bufferp(&inpic);

+    return ff_filter_frame(outlink, outpic);

 }

 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,

@@ -400,8 +378,7 @@ static const AVFilterPad hue_inputs[] = {

     {

         .name         = "default",

         .type         = AVMEDIA_TYPE_VIDEO,

-        .start_frame  = start_frame,

-        .draw_slice   = draw_slice,

+        .filter_frame = filter_frame,

         .config_props = config_props,

         .min_perms    = AV_PERM_READ,

     },