audio: rewrote audio cache to write to contiguous segments rather than one long file

Fixes issues with PCM file placement, optimizes some audio-based timeline and cache operations, just generally a better approach.
2020-10-11 23:27:40 +11:00
parent 920a15d2ea
commit f7ab0bb640
17 changed files with 575 additions and 226 deletions
@@ -82,16 +82,23 @@ void AudioManager::PushToOutput(const QByteArray &samples)
  emit OutputPushed(samples);
 }

-void AudioManager::StartOutput(const QString &filename, qint64 offset, int playback_speed)
+void AudioManager::StartOutput(AudioPlaybackCache *cache, qint64 offset, int playback_speed)
 {
+  // Create device
+  QIODevice* device = cache->CreatePlaybackDevice();
+
+  // Move to output manager's thread
+  device->moveToThread(output_manager_.thread());
+
+  // Queue to output manger in other thread
  QMetaObject::invokeMethod(&output_manager_,
                            "PullFromDevice",
                            Qt::QueuedConnection,
-                            Q_ARG(const QString&, filename),
+                            Q_ARG(QIODevice*, device),
                            Q_ARG(qint64, offset),
                            Q_ARG(int, playback_speed));

-  emit OutputDeviceStarted(filename, offset, playback_speed);
+  emit OutputDeviceStarted(cache, offset, playback_speed);
 }

 void AudioManager::StopOutput()