From 8d996af140b86a3df126d4bf799fabe5a7c97061 Mon Sep 17 00:00:00 2001
From: Eunhye Choi <eunhae1.choi@samsung.com>
Date: Mon, 13 Apr 2020 13:17:20 +0900
Subject: [PATCH] decodebin3: add request resource signal

- decodebin3 does not export the candidate decoder information
  to application. so request-resource signal is added to acquire
  resource before creating hw decoder.

Change-Id: Iecbd4667bdc9c47106843e2f181e8cf310278231
---
 gst/playback/gstdecodebin3.c    | 64 +++++++++++++++++++++++++++++++++++++++--
 packaging/gst-plugins-base.spec |  2 ++
 2 files changed, 64 insertions(+), 2 deletions(-)

diff --git a/gst/playback/gstdecodebin3.c b/gst/playback/gstdecodebin3.c
index c004407..e3791aa 100644
--- a/gst/playback/gstdecodebin3.c
+++ b/gst/playback/gstdecodebin3.c
@@ -277,8 +277,13 @@ struct _GstDecodebin3Class
 {
   GstBinClass class;
 
-    gint (*select_stream) (GstDecodebin3 * dbin,
-      GstStreamCollection * collection, GstStream * stream);
+  gint (*select_stream) (GstDecodebin3 * dbin,
+    GstStreamCollection * collection, GstStream * stream);
+
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+  gboolean (*request_resource) (GstDecodebin3 * dbin,
+    GstStreamCollection * collection, GstStream * stream);
+#endif
 };
 
 /* Input of decodebin, controls input pad and parsebin */
@@ -391,6 +396,9 @@ enum
 {
   SIGNAL_SELECT_STREAM,
   SIGNAL_ABOUT_TO_FINISH,
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+  SIGNAL_REQUEST_RESOURCE,
+#endif
   LAST_SIGNAL
 };
 static guint gst_decodebin3_signals[LAST_SIGNAL] = { 0 };
@@ -477,6 +485,10 @@ static void gst_decodebin3_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void gst_decodebin3_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+static gboolean gst_decodebin3_request_resource (GstElement * element,
+    GstStreamCollection * collection, GstStream * stream);
+#endif
 
 static gboolean parsebin_autoplug_continue_cb (GstElement *
     parsebin, GstPad * pad, GstCaps * caps, GstDecodebin3 * dbin);
@@ -533,6 +545,28 @@ static void update_requested_selection (GstDecodebin3 * dbin);
 /* FIXME: Really make all the parser stuff a self-contained helper object */
 #include "gstdecodebin3-parse.c"
 
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+static gboolean gst_decodebin3_request_resource (GstElement * element,
+    GstStreamCollection * collection, GstStream * stream)
+{
+  /* do not consider the resource limit */
+  return TRUE;
+}
+
+static gboolean
+_gst_boolean_accumulator (GSignalInvocationHint * ihint,
+    GValue * return_accu, const GValue * handler_return, gpointer dummy)
+{
+  gboolean myboolean;
+
+  myboolean = g_value_get_boolean (handler_return);
+  if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
+    g_value_set_boolean (return_accu, myboolean);
+
+  return myboolean;
+}
+#endif
+
 static gboolean
 _gst_int_accumulator (GSignalInvocationHint * ihint,
     GValue * return_accu, const GValue * handler_return, gpointer dummy)
@@ -620,6 +654,13 @@ gst_decodebin3_class_init (GstDecodebin3Class * klass)
       G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE,
       0, G_TYPE_NONE);
 
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+  gst_decodebin3_signals[SIGNAL_REQUEST_RESOURCE] =
+      g_signal_new ("request-resource", G_TYPE_FROM_CLASS (klass),
+      G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodebin3Class, request_resource),
+      _gst_boolean_accumulator, NULL, g_cclosure_marshal_generic,
+      G_TYPE_BOOLEAN, 2, GST_TYPE_STREAM_COLLECTION, GST_TYPE_STREAM);
+#endif
 
   element_class->request_new_pad =
       GST_DEBUG_FUNCPTR (gst_decodebin3_request_new_pad);
@@ -647,6 +688,10 @@ gst_decodebin3_class_init (GstDecodebin3Class * klass)
   bin_klass->handle_message = gst_decodebin3_handle_message;
 
   klass->select_stream = gst_decodebin3_select_stream;
+
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+  klass->request_resource = gst_decodebin3_request_resource;
+#endif
 }
 
 static void
@@ -2176,6 +2221,21 @@ create_element (GstDecodebin3 * dbin, GstStream * stream,
   g_mutex_unlock (&dbin->factories_lock);
 
   if (res) {
+#ifdef TIZEN_FEATURE_RESOURCE_MANAGER
+    if (gst_element_factory_list_is_type (res->data,
+              GST_ELEMENT_FACTORY_TYPE_HARDWARE)) {
+        gboolean result = FALSE;
+        g_signal_emit (G_OBJECT (dbin),
+            gst_decodebin3_signals[SIGNAL_REQUEST_RESOURCE], 0, dbin->collection, stream,
+            &result);
+        if (!result) {
+          GST_WARNING_OBJECT (dbin, "Failed to get HW resource.");
+          gst_plugin_feature_list_free (res);
+          gst_caps_unref (caps);
+          return NULL;
+        }
+    }
+#endif
     element =
         gst_element_factory_create ((GstElementFactory *) res->data, NULL);
     GST_DEBUG ("Created element '%s'", GST_ELEMENT_NAME (element));
diff --git a/packaging/gst-plugins-base.spec b/packaging/gst-plugins-base.spec
index 7f8e31f..ea75ab4 100644
--- a/packaging/gst-plugins-base.spec
+++ b/packaging/gst-plugins-base.spec
@@ -94,6 +94,8 @@ export CFLAGS="%{optflags} -fno-strict-aliasing\
 %if "%{tizen_profile_name}" == "tv"
  -DTIZEN_PROFILE_TV\
  -DTIZEN_FEATURE_TRUSTZONE\
+%else
+ -DTIZEN_FEATURE_RESOURCE_MANAGER\
 %endif
  -fstack-protector-strong\
  -Wl,-z,relro\
-- 
2.7.4