FEI: plugin: Add virtual methods to base encode

Two new virtual methods are added to gstvaapiencode.

load_control_data():  load the FEI input buffers set by the upstream elements
save_stats_to_meta(): save the FEI output buffers to Meta for downnstream elements

https://bugzilla.gnome.org/show_bug.cgi?id=785712
https://bugzilla.gnome.org/show_bug.cgi?id=784667

Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com>

2 files changed, 40 insertions, 0 deletions

diff --git a/gst/vaapi/gstvaapiencode.c b/gst/vaapi/gstvaapiencode.c
index fc8cf6e0..b3988394 100644
--- a/gst/vaapi/gstvaapiencode.c
+++ b/gst/vaapi/gstvaapiencode.c
@@ -271,6 +271,9 @@ gst_vaapiencode_push_frame (GstVaapiEncode * encode, gint64 timeout)
   GstVaapiEncoderStatus status;
   GstBuffer *out_buffer;
   GstFlowReturn ret;
+#if USE_H264_FEI_ENCODER
+  GstVaapiFeiVideoMeta *feimeta = NULL;
+#endif
 
   status = gst_vaapi_encoder_get_buffer_with_timeout (encode->encoder,
       &codedbuf_proxy, timeout);
@@ -295,6 +298,15 @@ gst_vaapiencode_push_frame (GstVaapiEncode * encode, gint64 timeout)
   out_buffer = NULL;
   ret = klass->alloc_buffer (encode,
       GST_VAAPI_CODED_BUFFER_PROXY_BUFFER (codedbuf_proxy), &out_buffer);
+
+#if USE_H264_FEI_ENCODER
+  if (klass->save_stats_to_meta) {
+    feimeta = klass->save_stats_to_meta (encode, codedbuf_proxy);
+    if (feimeta != NULL)
+      gst_buffer_set_vaapi_fei_video_meta (out_buffer, feimeta);
+  }
+#endif
+
   gst_vaapi_coded_buffer_proxy_replace (&codedbuf_proxy, NULL);
   if (ret != GST_FLOW_OK)
     goto error_allocate_buffer;
@@ -617,6 +629,10 @@ gst_vaapiencode_handle_frame (GstVideoEncoder * venc,
   GstVaapiSurfaceProxy *proxy;
   GstFlowReturn ret;
   GstBuffer *buf;
+#if USE_H264_FEI_ENCODER
+  GstVaapiFeiVideoMeta *feimeta = NULL;
+  GstVaapiEncodeClass *const klass = GST_VAAPIENCODE_GET_CLASS (venc);
+#endif
 
   buf = NULL;
   ret = gst_vaapi_plugin_base_get_input_buffer (GST_VAAPI_PLUGIN_BASE (encode),
@@ -635,6 +651,12 @@ gst_vaapiencode_handle_frame (GstVideoEncoder * venc,
   if (!proxy)
     goto error_buffer_no_surface_proxy;
 
+#if USE_H264_FEI_ENCODER
+  feimeta = gst_buffer_get_vaapi_fei_video_meta (buf);
+  if (feimeta && klass->load_control_data)
+    klass->load_control_data (encode, feimeta, proxy);
+#endif
+
   gst_video_codec_frame_set_user_data (frame,
       gst_vaapi_surface_proxy_ref (proxy),
       (GDestroyNotify) gst_vaapi_surface_proxy_unref);
diff --git a/gst/vaapi/gstvaapiencode.h b/gst/vaapi/gstvaapiencode.h
index 72121f79..b6382852 100644
--- a/gst/vaapi/gstvaapiencode.h
+++ b/gst/vaapi/gstvaapiencode.h
@@ -27,6 +27,12 @@
 #include "gstvaapipluginbase.h"
 #include <gst/vaapi/gstvaapiencoder.h>
 
+#if USE_H264_FEI_ENCODER
+#include <gst/vaapi/gstvaapisurface.h>
+#include <gst/vaapi/gstvaapicodedbufferproxy.h>
+#include "gstvaapifeivideometa.h"
+#endif
+
 G_BEGIN_DECLS
 
 #define GST_TYPE_VAAPIENCODE \
@@ -81,6 +87,18 @@ struct _GstVaapiEncodeClass
                                          GstVaapiCodedBuffer * coded_buf,
                                          GstBuffer ** outbuf_ptr);
   GstVaapiProfile     (*get_profile)    (GstCaps * caps);
+
+#if USE_H264_FEI_ENCODER
+
+  gboolean              (*load_control_data)   (GstVaapiEncode *encoder,
+                                                GstVaapiFeiVideoMeta *feimeta,
+                                                GstVaapiSurfaceProxy *proxy);
+
+  GstVaapiFeiVideoMeta* (*save_stats_to_meta)  (GstVaapiEncode *base_encode,
+                                                GstVaapiCodedBufferProxy *proxy);
+
+#endif
+
 };
 
 GType