Switched to PortAudio

audiodecoder.cpp

@@ -0,0 +1,83 @@
+#include "audiodecoder.h"
+
+#include <QAudioBuffer>
+#include <QMetaType>
+#include <QCoreApplication>
+#include <QDebug>
+
+#include "audioformat.h"
+
+AudioDecoder::AudioDecoder(QObject *parent) :
+    QObject(parent)
+{
+    QObject::connect(&m_decoder, qOverload<QAudioDecoder::Error>(&QAudioDecoder::error),
+                     this, &AudioDecoder::error);
+    QObject::connect(&m_decoder, &QAudioDecoder::finished,
+                     this, &AudioDecoder::finished);
+    QObject::connect(&m_decoder, &QAudioDecoder::bufferReady,
+                     this, &AudioDecoder::bufferReady);
+    QObject::connect(&m_decoder, &QAudioDecoder::durationChanged,
+                     this, &AudioDecoder::durationChanged);
+
+    m_decoder.setAudioFormat(audioFormat());
+}
+
+void AudioDecoder::startDecoding(std::shared_ptr<QIODevice> device)
+{
+    qDebug() << "called" << device.get();
+
+    if (m_decoder.state() == QAudioDecoder::DecodingState)
+        m_decoder.stop();
+
+    m_decoder.setSourceDevice(device.get());
+    m_device = device;
+    m_bytearray.clear();
+    m_decoder.start();
+}
+
+void AudioDecoder::error(const QAudioDecoder::Error error)
+{
+    qDebug() << "error:" << error << m_decoder.errorString() << m_decoder.sourceFilename();
+}
+
+void AudioDecoder::finished()
+{
+    qDebug() << "called";
+    emit decodingFinished(QAudioBuffer{std::move(m_bytearray), audioFormat()});
+}
+
+void AudioDecoder::bufferReady()
+{
+    const auto &format = m_decoder.audioFormat();
+    const auto buffer = m_decoder.read();
+
+    Q_ASSERT(buffer.byteCount() == buffer.sampleCount() * (format.sampleSize()/8));
+
+    m_bytearray.append(buffer.constData<char>(), buffer.byteCount());
+
+    const auto now = QDateTime::currentDateTime();
+    if (m_lastProgressUpdate.isNull() || m_lastProgressUpdate.msecsTo(now) > 100)
+    {
+        emit progress(m_decoder.position(), m_decoder.duration());
+        m_lastProgressUpdate = now;
+    }
+}
+
+void AudioDecoder::durationChanged(const qint64 duration)
+{
+    if (duration == -1)
+        return;
+
+    const auto &format = m_decoder.audioFormat();
+    const auto reserve = (format.sampleSize()/8) * format.sampleRate() * format.channelCount() * (duration + 1000) / 1000;
+    m_bytearray.reserve(reserve);
+    qDebug() << "duration:" << duration << reserve;
+}
+
+namespace {
+void registerMetaType()
+{
+    qRegisterMetaType<std::shared_ptr<QIODevice>>();
+}
+Q_COREAPP_STARTUP_FUNCTION(registerMetaType)
+}