Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/channels/tsmf/client/tsmf_audio.c

@@ -0,0 +1,99 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * Video Redirection Virtual Channel - Audio Device Manager
+ *
+ * Copyright 2010-2011 Vic Lee
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tsmf_audio.h"
+
+static ITSMFAudioDevice* tsmf_load_audio_device_by_name(const char* name, const char* device)
+{
+	ITSMFAudioDevice* audio = nullptr;
+	union
+	{
+		PVIRTUALCHANNELENTRY pvce;
+		TSMF_AUDIO_DEVICE_ENTRY entry;
+	} cnv;
+	cnv.pvce = freerdp_load_channel_addin_entry("tsmf", name, "audio", 0);
+
+	if (!cnv.entry)
+		return nullptr;
+
+	const UINT rc = cnv.entry(&audio);
+
+	if ((rc != CHANNEL_RC_OK) || !audio)
+	{
+		WLog_ERR(TAG, "failed to call export function in %s", name);
+		return nullptr;
+	}
+
+	if (!audio->Open(audio, device))
+	{
+		audio->Free(audio);
+		audio = nullptr;
+		WLog_ERR(TAG, "failed to open, name: %s, device: %s", name, device);
+	}
+	else
+	{
+		WLog_DBG(TAG, "name: %s, device: %s", name, device);
+	}
+
+	return audio;
+}
+
+ITSMFAudioDevice* tsmf_load_audio_device(const char* name, const char* device)
+{
+	ITSMFAudioDevice* audio = nullptr;
+
+	if (name)
+	{
+		audio = tsmf_load_audio_device_by_name(name, device);
+	}
+	else
+	{
+#if defined(WITH_PULSE)
+		if (!audio)
+			audio = tsmf_load_audio_device_by_name("pulse", device);
+#endif
+
+#if defined(WITH_OSS)
+		if (!audio)
+			audio = tsmf_load_audio_device_by_name("oss", device);
+#endif
+
+#if defined(WITH_ALSA)
+		if (!audio)
+			audio = tsmf_load_audio_device_by_name("alsa", device);
+#endif
+	}
+
+	if (audio == nullptr)
+	{
+		WLog_ERR(TAG, "no sound device.");
+	}
+	else
+	{
+		WLog_DBG(TAG, "name: %s, device: %s", name, device);
+	}
+
+	return audio;
+}