FFmpeg: AudioRenderer - prevent nullptr access to iodeviceHEADdev

When an error occurs (e.g. a headphone being disconnected), the
QIODevice for a QAudioSink is destroyed. Application code needs to keep
track of this by either handling stateChanged or by wrapping the
QIODevice into a QPointer.

Fixes: QTBUG-137973
Pick-to: 6.8 6.9 6.10
Change-Id: Ic86bb1adb75100db26799df0605182e52788d564
Reviewed-by: Anton Kudryavtsev <[email protected]>
Reviewed-by: Artem Dyomin <[email protected]>
Reviewed-by: Nils Petter Skålerud <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer_p.h b/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer_p.h
index 2eda582dd..8fa2ea7b6 100644
--- a/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer_p.h
+++ b/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer_p.h
@@ -119,7 +119,7 @@ private:
     QAudioFormat m_sinkFormat;
 
     BufferedDataWithOffset m_bufferedData;
-    QIODevice *m_ioDevice = nullptr;
+    QPointer<QIODevice> m_ioDevice;
 
     bool m_lastFramePushDone = true;