Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/channels/gfxredir/common/gfxredir_common.h

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+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * RDPXXXX Remote App Graphics Redirection Virtual Channel Extension
+ *
+ * Copyright 2020 Microsoft
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FREERDP_CHANNEL_GFXREDIR_COMMON_H
+#define FREERDP_CHANNEL_GFXREDIR_COMMON_H
+
+#include <winpr/crt.h>
+#include <winpr/stream.h>
+
+#include <freerdp/channels/gfxredir.h>
+#include <freerdp/api.h>
+
+WINPR_ATTR_NODISCARD
+FREERDP_LOCAL UINT gfxredir_read_header(wStream* s, GFXREDIR_HEADER* header);
+
+WINPR_ATTR_NODISCARD
+FREERDP_LOCAL UINT gfxredir_write_header(wStream* s, const GFXREDIR_HEADER* header);
+
+#endif /* FREERDP_CHANNEL_GFXREDIR_COMMON_H */