Prevent lost D3D11 device with QVideoFrame::toImage() with Qt Quick

This patch ensures that QFFmpeg::TextureConverter is only used to
convert frames when the destination QRhi instance is the same as the one
it was initialized on.

If QVideoFrame::toImage() is called from the main thread while the frame
is also being rendered in the Qt Quick render thread,
QVideoFrame::toImage() will create its own QRhi instance. In this case
we need to disable direct texture transfer of the QFFmpeg textures, and
instead fall back to mapping the texture data through CPU memory.

Task-number: QTBUG-113627
Pick-to: 6.7 6.5
Change-Id: I3184796d05627fcac1a069400e8a6a5879fcd5bc
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Reviewed-by: Artem Dyomin <artem.dyomin@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_vaapi.cpp b/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_vaapi.cpp
index 88d6d4f0e..81eef89ef 100644
--- a/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_vaapi.cpp
+++ b/src/plugins/multimedia/ffmpeg/qffmpeghwaccel_vaapi.cpp
@@ -154,7 +154,7 @@ class VAAPITextureSet : public TextureSet
 {
 public:
     ~VAAPITextureSet();
-    qint64 textureHandle(int plane) override {
+    qint64 textureHandle(QRhi *, int plane) override {
         return textures[plane];
     }