lavfi/qsvvpp: store a copy of the sequence parameters

We will postpone the vpp session initialization to when input and output
frames are ready, this copy of the sequence parameters will be used to
initialize vpp session.

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>

libavfilter/qsvvpp.c

@@ -767,28 +767,39 @@ int ff_qsvvpp_init(AVFilterContext *avctx, QSVVPPParam *param)
         goto failed;
     }
 
+    s->nb_seq_buffers = param->num_ext_buf;
 #if QSV_HAVE_OPAQUE
-    if (IS_OPAQUE_MEMORY(s->in_mem_mode) || IS_OPAQUE_MEMORY(s->out_mem_mode)) {
+    if (IS_OPAQUE_MEMORY(s->in_mem_mode) || IS_OPAQUE_MEMORY(s->out_mem_mode))
-        s->nb_ext_buffers = param->num_ext_buf + 1;
+        s->nb_seq_buffers++;
+#endif
+
+    if (s->nb_seq_buffers) {
+        s->seq_buffers = av_calloc(s->nb_seq_buffers, sizeof(*s->seq_buffers));
+        if (!s->seq_buffers) {
+            ret = AVERROR(ENOMEM);
+            goto failed;
+        }
+
+        for (i = 0; i < param->num_ext_buf; i++)
+            s->seq_buffers[i]    = param->ext_buf[i];
+
+#if QSV_HAVE_OPAQUE
+        if (IS_OPAQUE_MEMORY(s->in_mem_mode) || IS_OPAQUE_MEMORY(s->out_mem_mode))
+            s->seq_buffers[i] = (mfxExtBuffer *)&s->opaque_alloc;
+#endif
+
+        s->nb_ext_buffers = s->nb_seq_buffers;
         s->ext_buffers = av_calloc(s->nb_ext_buffers, sizeof(*s->ext_buffers));
         if (!s->ext_buffers) {
             ret = AVERROR(ENOMEM);
             goto failed;
         }
 
-        s->ext_buffers[0] = (mfxExtBuffer *)&s->opaque_alloc;
+        memcpy(s->ext_buffers, s->seq_buffers, s->nb_seq_buffers * sizeof(*s->seq_buffers));
-        for (i = 1; i < param->num_ext_buf; i++)
-            s->ext_buffers[i]    = param->ext_buf[i - 1];
-        s->vpp_param.ExtParam    = s->ext_buffers;
-        s->vpp_param.NumExtParam = s->nb_ext_buffers;
-    } else {
-        s->vpp_param.NumExtParam = param->num_ext_buf;
-        s->vpp_param.ExtParam    = param->ext_buf;
     }
-#else
+
-    s->vpp_param.NumExtParam = param->num_ext_buf;
+    s->vpp_param.ExtParam    = s->ext_buffers;
-    s->vpp_param.ExtParam    = param->ext_buf;
+    s->vpp_param.NumExtParam = s->nb_ext_buffers;
-#endif
 
     s->got_frame = 0;
 
@@ -861,9 +872,8 @@ int ff_qsvvpp_close(AVFilterContext *avctx)
     clear_frame_list(&s->out_frame_list);
     av_freep(&s->surface_ptrs_in);
     av_freep(&s->surface_ptrs_out);
-#if QSV_HAVE_OPAQUE
+    av_freep(&s->seq_buffers);
     av_freep(&s->ext_buffers);
-#endif
     av_freep(&s->frame_infos);
     av_fifo_freep2(&s->async_fifo);
 

libavfilter/qsvvpp.h

@@ -74,9 +74,14 @@ typedef struct QSVVPPContext {
 #if QSV_HAVE_OPAQUE
     /** MFXVPP extern parameters */
     mfxExtOpaqueSurfaceAlloc opaque_alloc;
+#endif
+    /** store sequence parameters */
+    mfxExtBuffer      **seq_buffers;
+    int                 nb_seq_buffers;
+
+    /** store all parameters for vpp execution, including parameters per frame */
     mfxExtBuffer      **ext_buffers;
     int                 nb_ext_buffers;
-#endif
 
     int got_frame;
     int async_depth;