1 files changed, 59 insertions, 0 deletions
diff --git a/OutputBuffer.cpp b/OutputBuffer.cpp
new file mode 100644
index 0000000..c6fe30a
--- /dev/null
+++ b/OutputBuffer.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2017 Konsulko Group
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <OutputBuffer.h>
+
+OutputBuffer::OutputBuffer(const QAudioFormat &format, QObject *parent)
+  : QIODevice(parent)
+{
+    m_sample_size = format.bytesPerFrame();
+}
+
+OutputBuffer::~OutputBuffer()
+{
+}
+
+void OutputBuffer::start()
+{
+    open(QIODevice::ReadWrite);
+}
+
+void OutputBuffer::stop()
+{
+    close();
+    QMutexLocker locker(&m_mutex);
+    m_buffer.clear();
+}
+
+qint64 OutputBuffer::readData(char *data, qint64 len)
+{
+    QMutexLocker locker(&m_mutex);
+    int n = qMin((qint64) m_buffer.size(), len);
+
+    // Make sure reads are in units of the sample size
+    n = n - (n % m_sample_size);
+
+    if (!m_buffer.isEmpty()) {
+        memcpy(data, m_buffer.constData(), n);
+	m_buffer.remove(0, n);
+    }
+    return n;
+}
+
+qint64 OutputBuffer::writeData(const char *data, qint64 len)
+{
+    QMutexLocker locker(&m_mutex);
+    m_buffer.append(data, len);
+    return len;
+}
+
+qint64 OutputBuffer::bytesAvailable()
+{
+    QMutexLocker locker(&m_mutex);
+    return m_buffer.size() + QIODevice::bytesAvailable();
+}