Switched to PortAudio

audioplayer.cpp

@@ -0,0 +1,52 @@
+#include "audioplayer.h"
+
+#include <algorithm>
+#include <cmath>
+
+AudioPlayer::AudioPlayer(QObject *parent) :
+    QObject{parent}
+{
+}
+
+AudioPlayer::AudioPlayer(const QAudioBuffer &buffer, QObject *parent) :
+    QObject{parent},
+    m_buffer{buffer}
+{
+}
+
+void AudioPlayer::writeSamples(frame_t *begin, frame_t *end)
+{
+    if (!m_playing)
+        return;
+
+    const auto frames = std::min<size_t>(std::distance(begin, end), m_buffer.frameCount()-m_position);
+
+    if (!frames)
+    {
+        m_playing = false;
+        emit playingChanged(false);
+        return;
+    }
+
+    std::transform(static_cast<const frame_t *>(begin), static_cast<const frame_t *>(begin+frames), m_buffer.constData<frame_t>() + m_position, begin,
+                   [](const frame_t &frame, const frame_t &frame2)->frame_t{
+        frame_t newFrame;
+        std::transform(std::begin(frame), std::end(frame), std::begin(frame2), std::begin(newFrame),
+                       [](const sample_t &left, const sample_t &right) { return left + right; });
+        return newFrame;
+    });
+
+    m_position += frames;
+}
+
+void AudioPlayer::restart()
+{
+    setPosition(0);
+    setPlaying(true);
+}
+
+void AudioPlayer::stop()
+{
+    setPosition(0);
+    setPlaying(false);
+}