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Diffstat (limited to 'media/base/video_capturer_source.h')
| -rw-r--r-- | media/base/video_capturer_source.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/media/base/video_capturer_source.h b/media/base/video_capturer_source.h index a99faf8..ddec90c 100644 --- a/media/base/video_capturer_source.h +++ b/media/base/video_capturer_source.h @@ -76,6 +76,16 @@ class MEDIA_EXPORT VideoCapturerSource { const VideoCaptureDeliverFrameCB& new_frame_callback, const RunningCallback& running_callback) = 0; + // Asks source to send a refresh frame. In cases where source does not provide + // a continuous rate of new frames (e.g. canvas capture, screen capture where + // the screen's content has not changed in a while), consumers may request a + // "refresh frame" to be delivered. For instance, this would be needed when + // a new sink is added to a MediaStreamTrack. + // The default implementation is a no-op and implementations are not required + // to honor this request. If they decide to and capturing is started + // successfully, then |new_frame_callback| should be called with a frame. + virtual void RequestRefreshFrame() {} + // Stops capturing frames and clears all callbacks including the // SupportedFormatsCallback callback. Note that queued frame callbacks // may still occur after this call, so the caller must take care to |