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Unified Diff: chromecast/media/base/media_resource_tracker.h

Issue 2348603002: [chromecast] Track MediaPipelineBackend used by CastRenderer. (Closed)
Patch Set: DISALLOW_COPY_AND_ASSIGN Created 4 years, 3 months ago
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Index: chromecast/media/base/media_resource_tracker.h
diff --git a/chromecast/media/base/media_resource_tracker.h b/chromecast/media/base/media_resource_tracker.h
index 52a3011fddd711ce67308fecb0dbc611a5ba554b..db659228f0a10bb6223d466381f0d1c1230a447a 100644
--- a/chromecast/media/base/media_resource_tracker.h
+++ b/chromecast/media/base/media_resource_tracker.h
@@ -32,6 +32,21 @@ namespace media {
// thread.
class MediaResourceTracker {
public:
+ // Helper class to manage media resource usage count.
+ // Create an instance of this class when a media resource is created.
+ // Delete the instance *after* the media resource is deleted.
+ // This class is not thread-safe. It must be created and deleted on
+ // |MediaResourceTracker::media_task_runner_|.
+ class ScopedUsage {
+ public:
+ ScopedUsage(MediaResourceTracker* tracker);
+ ~ScopedUsage();
+
+ private:
+ MediaResourceTracker* tracker_;
+ DISALLOW_COPY_AND_ASSIGN(ScopedUsage);
+ };
+
MediaResourceTracker(
const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner,
const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner);
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