Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/server/shadow/shadow_rdpsnd.c

@@ -0,0 +1,97 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ *
+ * Copyright 2015 Jiang Zihao <zihao.jiang@yahoo.com>
+ *
+ * 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.
+ */
+
+#include <freerdp/config.h>
+
+#include <winpr/crt.h>
+#include <winpr/assert.h>
+#include <winpr/cast.h>
+
+#include <freerdp/log.h>
+#include <freerdp/codec/dsp.h>
+#include <freerdp/server/server-common.h>
+
+#include "shadow.h"
+
+#include "shadow_rdpsnd.h"
+
+#define TAG SERVER_TAG("shadow")
+
+static void rdpsnd_activated(RdpsndServerContext* context)
+{
+	WINPR_ASSERT(context);
+	for (size_t i = 0; i < context->num_client_formats; i++)
+	{
+		for (size_t j = 0; j < context->num_server_formats; j++)
+		{
+			if (audio_format_compatible(&context->server_formats[j], &context->client_formats[i]))
+			{
+				const UINT rc = context->SelectFormat(context, WINPR_ASSERTING_INT_CAST(UINT16, i));
+				if (rc != CHANNEL_RC_OK)
+					WLog_WARN(TAG, "SelectFormat failed with %" PRIu32, rc);
+				return;
+			}
+		}
+	}
+
+	WLog_ERR(TAG, "Could not agree on a audio format with the server\n");
+}
+
+int shadow_client_rdpsnd_init(rdpShadowClient* client)
+{
+	WINPR_ASSERT(client);
+	RdpsndServerContext* rdpsnd = client->rdpsnd = rdpsnd_server_context_new(client->vcm);
+
+	if (!rdpsnd)
+	{
+		return 0;
+	}
+
+	rdpsnd->data = client;
+
+	if (client->subsystem->rdpsndFormats)
+	{
+		rdpsnd->server_formats = client->subsystem->rdpsndFormats;
+		rdpsnd->num_server_formats = client->subsystem->nRdpsndFormats;
+	}
+	else
+	{
+		rdpsnd->num_server_formats = server_rdpsnd_get_formats(&rdpsnd->server_formats);
+	}
+
+	if (rdpsnd->num_server_formats > 0)
+		rdpsnd->src_format = &rdpsnd->server_formats[0];
+
+	rdpsnd->Activated = rdpsnd_activated;
+
+	const UINT error = rdpsnd->Initialize(rdpsnd, TRUE);
+	if (error != CHANNEL_RC_OK)
+		return -1;
+	return 1;
+}
+
+void shadow_client_rdpsnd_uninit(rdpShadowClient* client)
+{
+	WINPR_ASSERT(client);
+	if (client->rdpsnd)
+	{
+		client->rdpsnd->Stop(client->rdpsnd);
+		rdpsnd_server_context_free(client->rdpsnd);
+		client->rdpsnd = nullptr;
+	}
+}