diff options
Diffstat (limited to 'include/media/nbaio/MonoPipe.h')
| -rw-r--r-- | include/media/nbaio/MonoPipe.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/media/nbaio/MonoPipe.h b/include/media/nbaio/MonoPipe.h index c47bf6c..5fcfe9e 100644 --- a/include/media/nbaio/MonoPipe.h +++ b/include/media/nbaio/MonoPipe.h @@ -77,6 +77,17 @@ public: void setAvgFrames(size_t setpoint); size_t maxFrames() const { return mMaxFrames; } + // Set the shutdown state for the write side of a pipe. + // This may be called by an unrelated thread. When shutdown state is 'true', + // a write that would otherwise block instead returns a short transfer count. + // There is no guarantee how long it will take for the shutdown to be recognized, + // but it will not be an unbounded amount of time. + // The state can be restored to normal by calling shutdown(false). + void shutdown(bool newState = true); + + // Return true if the write side of a pipe is currently shutdown. + bool isShutdown(); + private: // A pair of methods and a helper variable which allows the reader and the // writer to update and observe the values of mFront and mNextRdPTS in an @@ -114,6 +125,8 @@ private: int64_t offsetTimestampByAudioFrames(int64_t ts, size_t audFrames); LinearTransform mSamplesToLocalTime; + + bool mIsShutdown; // whether shutdown(true) was called, no barriers are needed }; } // namespace android |