Merge pull request #2339 from LMMS/audio-soundio

add libsoundio audio backend
2015-09-13 20:38:12 -07:00
parent 2fb0babfd8 e7af4b6f3e
commit 799f830827
11 changed files with 648 additions and 4 deletions
--- a/include/AudioSoundIo.h
+++ b/include/AudioSoundIo.h
@@ -0,0 +1,134 @@
+/*
+ * AudioSoundIo.h - device-class that performs PCM-output via libsoundio
+ *
+ * Copyright (c) 2015 Andrew Kelley <superjoe30@gmail.com>
+ *
+ * This file is part of LMMS - http://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef AUDIO_SOUNDIO_H
+#define AUDIO_SOUNDIO_H
+
+#include <QtCore/QObject>
+
+#include "lmmsconfig.h"
+#include "ComboBoxModel.h"
+
+#ifdef LMMS_HAVE_SOUNDIO
+
+#include <soundio/soundio.h>
+
+#include "AudioDevice.h"
+#include "AudioDeviceSetupWidget.h"
+
+class ComboBox;
+class LcdSpinBox;
+
+// Exists only to work around "Error: Meta object features not supported for nested classes"
+class AudioSoundIoSetupUtil : public QObject
+{
+	Q_OBJECT
+public:
+	void *m_setupWidget;
+public slots:
+	void updateDevices();
+	void reconnectSoundIo();
+};
+
+class AudioSoundIo : public AudioDevice
+{
+public:
+	AudioSoundIo( bool & _success_ful, Mixer* mixer );
+	virtual ~AudioSoundIo();
+
+	inline static QString name()
+	{
+		return QT_TRANSLATE_NOOP( "setupWidget", "soundio" );
+	}
+
+	class setupWidget : public AudioDeviceSetupWidget
+	{
+	public:
+		setupWidget( QWidget * _parent );
+		virtual ~setupWidget();
+
+		virtual void saveSettings();
+
+		void updateDevices();
+		void reconnectSoundIo();
+
+	private:
+
+		AudioSoundIoSetupUtil m_setupUtil;
+		ComboBox * m_backend;
+		ComboBox * m_device;
+
+		ComboBoxModel m_backendModel;
+		ComboBoxModel m_deviceModel;
+
+		SoundIo * m_soundio;
+
+		struct DeviceId {
+			QString id;
+			bool is_raw;
+		};
+		QList<DeviceId> m_deviceList;
+
+		int m_defaultOutIndex;
+		bool m_isFirst;
+
+	} ;
+
+private:
+	virtual void startProcessing();
+	virtual void stopProcessing();
+
+	SoundIo *m_soundio;
+	SoundIoOutStream *m_outstream;
+
+	surroundSampleFrame * m_outBuf;
+	int m_outBufSize;
+	fpp_t m_outBufFramesTotal;
+	fpp_t m_outBufFrameIndex;
+
+	int m_disconnectErr;
+	void onBackendDisconnect(int err);
+
+	void writeCallback(int frame_count_min, int frame_count_max);
+	void errorCallback(int err);
+	void underflowCallback();
+
+	static void staticWriteCallback(SoundIoOutStream *outstream, int frame_count_min, int frame_count_max) {
+		return ((AudioSoundIo *)outstream->userdata)->writeCallback(frame_count_min, frame_count_max);
+	}
+	static void staticErrorCallback(SoundIoOutStream *outstream, int err) {
+		return ((AudioSoundIo *)outstream->userdata)->errorCallback(err);
+	}
+	static void staticUnderflowCallback(SoundIoOutStream *outstream) {
+		return ((AudioSoundIo *)outstream->userdata)->underflowCallback();
+	}
+	static void staticOnBackendDisconnect(SoundIo *soundio, int err) {
+		return ((AudioSoundIo *)soundio->userdata)->onBackendDisconnect(err);
+	}
+
+};
+
+#endif
+
+#endif