1 files changed, 127 insertions, 0 deletions
diff --git a/extern/audaspace/plugins/coreaudio/CoreAudioSynchronizer.cpp b/extern/audaspace/plugins/coreaudio/CoreAudioSynchronizer.cpp
new file mode 100644
index 00000000000..fcfa7fde9be
--- /dev/null
+++ b/extern/audaspace/plugins/coreaudio/CoreAudioSynchronizer.cpp
@@ -0,0 +1,127 @@
+/*******************************************************************************
+ * Copyright 2009-2016 Jörg Müller
+ *
+ * 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 "CoreAudioSynchronizer.h"
+
+#include "CoreAudioDevice.h"
+#include "Exception.h"
+
+AUD_NAMESPACE_BEGIN
+
+CoreAudioSynchronizer::CoreAudioSynchronizer(AudioUnit& audio_unit) :
+	m_clock_ref(nullptr),
+	m_playing(false)
+{
+	OSStatus status = CAClockNew(0, &m_clock_ref);
+
+	if(status != noErr)
+		AUD_THROW(DeviceException, "Could not create a CoreAudio clock.");
+
+	CAClockTimebase timebase = kCAClockTimebase_AudioOutputUnit;
+
+	status = CAClockSetProperty(m_clock_ref, kCAClockProperty_InternalTimebase, sizeof(timebase), &timebase);
+
+	if(status != noErr)
+	{
+		CAClockDispose(m_clock_ref);
+		AUD_THROW(DeviceException, "Could not create a CoreAudio clock.");
+	}
+
+	status = CAClockSetProperty(m_clock_ref, kCAClockProperty_TimebaseSource, sizeof(audio_unit), &audio_unit);
+
+	if(status != noErr)
+	{
+		CAClockDispose(m_clock_ref);
+		AUD_THROW(DeviceException, "Could not create a CoreAudio clock.");
+	}
+
+	CAClockSyncMode sync_mode = kCAClockSyncMode_Internal;
+
+	status = CAClockSetProperty(m_clock_ref, kCAClockProperty_SyncMode, sizeof(sync_mode), &sync_mode);
+
+	if(status != noErr)
+	{
+		CAClockDispose(m_clock_ref);
+		AUD_THROW(DeviceException, "Could not create a CoreAudio clock.");
+	}
+}
+
+CoreAudioSynchronizer::~CoreAudioSynchronizer()
+{
+	CAClockDispose(m_clock_ref);
+}
+
+void CoreAudioSynchronizer::seek(std::shared_ptr<IHandle> handle, double time)
+{
+	if(m_playing)
+		CAClockStop(m_clock_ref);
+
+	CAClockTime clock_time;
+	clock_time.format = kCAClockTimeFormat_Seconds;
+	clock_time.time.seconds = time;
+	CAClockSetCurrentTime(m_clock_ref, &clock_time);
+
+	handle->seek(time);
+
+	if(m_playing)
+		CAClockStart(m_clock_ref);
+}
+
+double CoreAudioSynchronizer::getPosition(std::shared_ptr<IHandle> handle)
+{
+	CAClockTime clock_time;
+
+	OSStatus status;
+
+	if(m_playing)
+		status = CAClockGetCurrentTime(m_clock_ref, kCAClockTimeFormat_Seconds, &clock_time);
+	else
+		status = CAClockGetStartTime(m_clock_ref, kCAClockTimeFormat_Seconds, &clock_time);
+
+	if(status != noErr)
+		return 0;
+
+	return clock_time.time.seconds;
+}
+
+void CoreAudioSynchronizer::play()
+{
+	if(m_playing)
+		return;
+
+	m_playing = true;
+	CAClockStart(m_clock_ref);
+}
+
+void CoreAudioSynchronizer::stop()
+{
+	if(!m_playing)
+		return;
+
+	m_playing = false;
+	CAClockStop(m_clock_ref);
+}
+
+void CoreAudioSynchronizer::setSyncCallback(ISynchronizer::syncFunction function, void* data)
+{
+}
+
+int CoreAudioSynchronizer::isPlaying()
+{
+	return m_playing;
+}
+
+AUD_NAMESPACE_END