122     struct BufferCache {  struct in android::hardware::media::bufferpool::V2_0::implementation::BufferPoolClient::Impl
123         std::mutex mLock;
124         bool mCreating;
125         std::condition_variable mCreateCv;
126         std::map<BufferId, std::unique_ptr<ClientBuffer>> mBuffers;
127         int mActive;
128         int64_t mLastChangeUs;
130         BufferCache() : mCreating(false), mActive(0), mLastChangeUs(getTimestampNow()) {}  in BufferCache()  function
132         void incActive_l() {  in incActive_l()
137         void decActive_l() {  in decActive_l()
142         int cachedBufferCount() const {  in cachedBufferCount()