msdk: adds util functions to handle GstContext

To share GstMsdkContext with each msdk element,
it will be using GstContext.

Most common code is from gstreamer-vaapi.

https://bugzilla.gnome.org/show_bug.cgi?id=790752

1 files changed, 57 insertions, 0 deletions

diff --git a/sys/msdk/gstmsdkcontextutil.h b/sys/msdk/gstmsdkcontextutil.h
new file mode 100644
index 000000000..93071b16f
--- /dev/null
+++ b/sys/msdk/gstmsdkcontextutil.h
@@ -0,0 +1,57 @@
+/* GStreamer Intel MSDK plugin
+ * Copyright (c) 2018, Intel Corporation
+ * Copyright (c) 2018, Igalia S.L.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGDECE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef GST_MSDK_CONTEXT_UTIL_H
+#define GST_MSDK_CONTEXT_UTIL_H
+
+#include "msdk.h"
+#include "gstmsdkcontext.h"
+#ifndef _WIN32
+#include <va/va.h>
+#endif
+
+#define GST_MSDK_CONTEXT_TYPE_NAME "gst.msdk.Context"
+
+G_BEGIN_DECLS
+
+gboolean
+gst_msdk_context_prepare (GstElement * element, GstMsdkContext ** context_ptr);
+
+gboolean
+gst_msdk_context_get_context (GstContext * context, GstMsdkContext ** msdk_context);
+
+gboolean
+gst_msdk_context_ensure_context (GstElement * element, gboolean hardware);
+
+G_END_DECLS
+
+#endif /* GST_MSDK_CONTEXT_UTIL_H */