1 files changed, 142 insertions, 0 deletions
diff --git a/src/multimedia/alsa/qalsaaudiosource_p.h b/src/multimedia/alsa/qalsaaudiosource_p.h
new file mode 100644
index 000000000..87487a6ad
--- /dev/null
+++ b/src/multimedia/alsa/qalsaaudiosource_p.h
@@ -0,0 +1,142 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QAUDIOINPUTALSA_H
+#define QAUDIOINPUTALSA_H
+
+#include <alsa/asoundlib.h>
+
+#include <QtCore/qfile.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qelapsedtimer.h>
+#include <QtCore/qiodevice.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodevice.h>
+#include <private/qaudiosystem_p.h>
+
+QT_BEGIN_NAMESPACE
+
+
+class AlsaInputPrivate;
+
+class RingBuffer
+{
+public:
+    RingBuffer();
+
+    void resize(int size);
+
+    int bytesOfDataInBuffer() const;
+    int freeBytes() const;
+
+    const char *availableData() const;
+    int availableDataBlockSize() const;
+    void readBytes(int bytes);
+
+    void write(char *data, int len);
+
+private:
+    int m_head;
+    int m_tail;
+
+    QByteArray m_data;
+};
+
+class QAlsaAudioSource : public QPlatformAudioSource
+{
+    Q_OBJECT
+public:
+    QAlsaAudioSource(const QByteArray &device, QObject *parent);
+    ~QAlsaAudioSource();
+
+    qint64 read(char* data, qint64 len);
+
+    void start(QIODevice* device) override;
+    QIODevice* start() override;
+    void stop() override;
+    void reset() override;
+    void suspend() override;
+    void resume() override;
+    qsizetype bytesReady() const override;
+    void setBufferSize(qsizetype value) override;
+    qsizetype bufferSize() const override;
+    qint64 processedUSecs() const override;
+    QAudio::Error error() const override;
+    QAudio::State state() const override;
+    void setFormat(const QAudioFormat& fmt) override;
+    QAudioFormat format() const override;
+    void setVolume(qreal) override;
+    qreal volume() const override;
+    bool resuming;
+    snd_pcm_t* handle;
+    qint64 totalTimeValue;
+    QIODevice* audioSource;
+    QAudioFormat settings;
+    QAudio::Error errorState;
+    QAudio::State deviceState;
+
+private slots:
+    void userFeed();
+    bool deviceReady();
+
+private:
+    int checkBytesReady();
+    int xrun_recovery(int err);
+    int setFormat();
+    bool open();
+    void close();
+    void drain();
+
+    QTimer* timer;
+    qint64 elapsedTimeOffset;
+    RingBuffer ringBuffer;
+    qsizetype bytesAvailable;
+    QByteArray m_device;
+    bool pullMode;
+    qsizetype buffer_size;
+    int period_size;
+    unsigned int buffer_time;
+    unsigned int period_time;
+    snd_pcm_uframes_t buffer_frames;
+    snd_pcm_uframes_t period_frames;
+    snd_pcm_access_t access;
+    snd_pcm_format_t pcmformat;
+    snd_pcm_hw_params_t *hwparams;
+    qreal m_volume;
+};
+
+class AlsaInputPrivate : public QIODevice
+{
+    Q_OBJECT
+public:
+    AlsaInputPrivate(QAlsaAudioSource* audio);
+    ~AlsaInputPrivate();
+
+    qint64 readData( char* data, qint64 len) override;
+    qint64 writeData(const char* data, qint64 len) override;
+
+    void trigger();
+private:
+    QAlsaAudioSource *audioDevice;
+};
+
+QT_END_NAMESPACE
+
+
+#endif