msdk: Create msdk context without job_type

The job_type is not necessary when creating a normal msdk
context. Make the APIs for creating context more flexible.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4177>

subprojects/gst-plugins-bad/sys/msdk/gstmsdk.c

@@ -115,6 +115,7 @@ static gboolean
 plugin_init (GstPlugin * plugin)
 {
   gboolean ret;
+  GstMsdkContext *context;
 
   GST_DEBUG_CATEGORY_INIT (gst_msdk_debug, "msdk", 0, "msdk");
   GST_DEBUG_CATEGORY_INIT (gst_msdkdec_debug, "msdkdec", 0, "msdkdec");
@@ -145,7 +146,8 @@ plugin_init (GstPlugin * plugin)
 
   plugin_add_dependencies (plugin);
 
-  if (!msdk_is_available ())
+  context = gst_msdk_context_new (TRUE);
+  if (!context)
     return TRUE;                /* return TRUE to avoid getting blacklisted */
 
   ret = gst_element_register (plugin, "msdkh264dec", GST_RANK_NONE,
@@ -196,6 +198,8 @@ plugin_init (GstPlugin * plugin)
   ret = gst_element_register (plugin, "msdkvpp", GST_RANK_NONE,
       GST_TYPE_MSDKVPP);
 
+  gst_object_unref (context);
+
   return ret;
 }
 

subprojects/gst-plugins-bad/sys/msdk/gstmsdkcontext.c

@@ -304,15 +304,13 @@ gst_msdk_context_use_d3d11 (GstMsdkContext * context)
 #endif
 
 static gboolean
-gst_msdk_context_open (GstMsdkContext * context, gboolean hardware,
-    GstMsdkContextJobType job_type)
+gst_msdk_context_open (GstMsdkContext * context, gboolean hardware)
 {
   mfxU16 codename;
   GstMsdkContextPrivate *priv = context->priv;
   MsdkSession msdk_session;
   mfxIMPL impl;
 
-  priv->job_type = job_type;
   priv->hardware = hardware;
 
   impl = hardware ? MFX_IMPL_HARDWARE_ANY : MFX_IMPL_SOFTWARE;
@@ -410,12 +408,11 @@ gst_msdk_context_class_init (GstMsdkContextClass * klass)
 }
 
 GstMsdkContext *
-gst_msdk_context_new (gboolean hardware, GstMsdkContextJobType job_type)
+gst_msdk_context_new (gboolean hardware)
 {
   GstMsdkContext *obj = g_object_new (GST_TYPE_MSDK_CONTEXT, NULL);
 
-  if (obj && !gst_msdk_context_open (obj, hardware, job_type)) {
-    if (obj)
+  if (obj && !gst_msdk_context_open (obj, hardware)) {
     gst_object_unref (obj);
     return NULL;
   }
@@ -423,6 +420,18 @@ gst_msdk_context_new (gboolean hardware, GstMsdkContextJobType job_type)
   return obj;
 }
 
+GstMsdkContext *
+gst_msdk_context_new_with_job_type (gboolean hardware,
+    GstMsdkContextJobType job_type)
+{
+  GstMsdkContext *obj = gst_msdk_context_new (hardware);
+
+  if (obj)
+    obj->priv->job_type = job_type;
+
+  return obj;
+}
+
 GstMsdkContext *
 gst_msdk_context_new_with_parent (GstMsdkContext * parent)
 {
@@ -783,6 +792,13 @@ gst_msdk_context_get_job_type (GstMsdkContext * context)
   return context->priv->job_type;
 }
 
+void
+gst_msdk_context_set_job_type (GstMsdkContext * context,
+    GstMsdkContextJobType job_type)
+{
+  context->priv->job_type = job_type;
+}
+
 void
 gst_msdk_context_add_job_type (GstMsdkContext * context,
     GstMsdkContextJobType job_type)

subprojects/gst-plugins-bad/sys/msdk/gstmsdkcontext.h

@@ -87,7 +87,9 @@ struct _GstMsdkContextClass
 
 GType gst_msdk_context_get_type (void);
 
-GstMsdkContext * gst_msdk_context_new (gboolean hardware, GstMsdkContextJobType job_type);
+GstMsdkContext * gst_msdk_context_new (gboolean hardware);
+GstMsdkContext * gst_msdk_context_new_with_job_type (gboolean hardware,
+    GstMsdkContextJobType job_type);
 GstMsdkContext * gst_msdk_context_new_with_parent (GstMsdkContext * parent);
 #ifndef _WIN32
 GstMsdkContext * gst_msdk_context_new_with_va_display (GstObject * display_obj,
@@ -141,6 +143,10 @@ gst_msdk_context_get_alloc_pool (GstMsdkContext * context);
 GstMsdkContextJobType
 gst_msdk_context_get_job_type (GstMsdkContext * context);
 
+void
+gst_msdk_context_set_job_type (GstMsdkContext * context,
+    GstMsdkContextJobType job_type);
+
 void
 gst_msdk_context_add_job_type (GstMsdkContext * context, GstMsdkContextJobType job_type);
 

subprojects/gst-plugins-bad/sys/msdk/gstmsdkcontextutil.c

@@ -264,7 +264,7 @@ gst_msdk_ensure_new_context (GstElement * element, gboolean hardware,
      to enable user to choose GPU device in multi-GPU environment. This variable
      is only valid when there's no context returned by upstream or downstream.
      Otherwise it will use the device that created by upstream or downstream. */
-  msdk_context = gst_msdk_context_new (hardware, job);
+  msdk_context = gst_msdk_context_new_with_job_type (hardware, job);
   if (!msdk_context) {
     GST_ERROR_OBJECT (element, "Context creation failed");
     return FALSE;

subprojects/gst-plugins-bad/sys/msdk/msdk.c

@@ -388,20 +388,6 @@ failed:
   return msdk_session;
 }
 
-gboolean
-msdk_is_available (void)
-{
-  /* Make sure we can create GstMsdkContext instance (the job type is not used actually) */
-  GstMsdkContext *msdk_context = gst_msdk_context_new (1, GST_MSDK_JOB_DECODER);
-
-  if (!msdk_context) {
-    return FALSE;
-  }
-
-  gst_object_unref (msdk_context);
-  return TRUE;
-}
-
 void
 gst_msdk_set_video_alignment (GstVideoInfo * info, guint alloc_w, guint alloc_h,
     GstVideoAlignment * alignment)

subprojects/gst-plugins-bad/sys/msdk/msdk.h

@@ -114,8 +114,6 @@ MsdkSession msdk_open_session (mfxIMPL impl);
 void msdk_close_mfx_session (mfxSession session);
 void msdk_close_session (MsdkSession * session);
 
-gboolean msdk_is_available (void);
-
 mfxFrameSurface1 *msdk_get_free_surface (mfxFrameSurface1 * surfaces,
     guint size);
 void msdk_frame_to_surface (GstVideoFrame * frame, mfxFrameSurface1 * surface);