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author | Maurice Kalinowski <maurice.kalinowski@theqtcompany.com> | 2016-02-17 11:19:47 +0100 |
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committer | Maurice Kalinowski <maurice.kalinowski@theqtcompany.com> | 2016-03-29 11:26:33 +0000 |
commit | 0d8366273dcb9af5dae641c7efbc6db878942422 (patch) | |
tree | 7c17ce8274a80409cff05733dd846379d29a0fef /src/plugins/wasapi/qwasapiaudioinput.h | |
parent | e757890f4a5669b396039211902224f31666725a (diff) | |
download | qtmultimedia-0d8366273dcb9af5dae641c7efbc6db878942422.tar.gz |
Add Wasapi audio backend
WASAPI is a Windows audio backend for low latency audio.
This backend works for WinRT as well as classic desktop apps.
Task-number: QTBUG-42287
Change-Id: I7a1b7b103b64fadc50a9955a9d59443791f6d026
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
Diffstat (limited to 'src/plugins/wasapi/qwasapiaudioinput.h')
-rw-r--r-- | src/plugins/wasapi/qwasapiaudioinput.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/plugins/wasapi/qwasapiaudioinput.h b/src/plugins/wasapi/qwasapiaudioinput.h new file mode 100644 index 000000000..829cad153 --- /dev/null +++ b/src/plugins/wasapi/qwasapiaudioinput.h @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies). +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QAUDIOINPUTWASAPI_H +#define QAUDIOINPUTWASAPI_H + +#include <QtCore/QLoggingCategory> +#include <QtCore/QMutex> +#include <QtCore/QTime> +#include <QtMultimedia/QAbstractAudioInput> +#include <QtMultimedia/QAudio> + +#include <wrl.h> + +struct IAudioCaptureClient; +struct IAudioStreamVolume; + +QT_BEGIN_NAMESPACE + +class AudioInterface; +class WasapiInputDevicePrivate; +class QWasapiProcessThread; + +Q_DECLARE_LOGGING_CATEGORY(lcMmAudioInput) + +class QWasapiAudioInput : public QAbstractAudioInput +{ + Q_OBJECT +public: + explicit QWasapiAudioInput(const QByteArray &device); + ~QWasapiAudioInput(); + + void start(QIODevice* device) Q_DECL_OVERRIDE; + QIODevice* start() Q_DECL_OVERRIDE; + void stop() Q_DECL_OVERRIDE; + void reset() Q_DECL_OVERRIDE; + void suspend() Q_DECL_OVERRIDE; + void resume() Q_DECL_OVERRIDE; + int bytesReady() const Q_DECL_OVERRIDE; + int periodSize() const Q_DECL_OVERRIDE; + void setBufferSize(int value) Q_DECL_OVERRIDE; + int bufferSize() const Q_DECL_OVERRIDE; + void setNotifyInterval(int milliSeconds) Q_DECL_OVERRIDE; + int notifyInterval() const Q_DECL_OVERRIDE; + qint64 processedUSecs() const Q_DECL_OVERRIDE; + qint64 elapsedUSecs() const Q_DECL_OVERRIDE; + QAudio::Error error() const Q_DECL_OVERRIDE; + QAudio::State state() const Q_DECL_OVERRIDE; + void setFormat(const QAudioFormat& fmt) Q_DECL_OVERRIDE; + QAudioFormat format() const Q_DECL_OVERRIDE; + void setVolume(qreal) Q_DECL_OVERRIDE; + qreal volume() const Q_DECL_OVERRIDE; + + void process(); +private: + bool initStart(bool pull); + friend class WasapiInputDevicePrivate; + friend class WasapiInputPrivate; + QByteArray m_deviceName; + Microsoft::WRL::ComPtr<AudioInterface> m_interface; + Microsoft::WRL::ComPtr<IAudioCaptureClient> m_capture; +#if defined(CLASSIC_APP_BUILD) || _MSC_VER >= 1900 + Microsoft::WRL::ComPtr<IAudioStreamVolume> m_volumeControl; + qreal m_volumeCache; +#endif + QMutex m_mutex; + QAudio::State m_currentState; + QAudio::Error m_currentError; + QAudioFormat m_currentFormat; + qint64 m_bytesProcessed; + QTime m_openTime; + int m_openTimeOffset; + int m_interval; + bool m_pullMode; + quint32 m_bufferFrames; + quint32 m_bufferBytes; + HANDLE m_event; + QWasapiProcessThread *m_eventThread; + QIODevice *m_eventDevice; +}; + +QT_END_NAMESPACE + +#endif |