c90a77f1e5b42d8fcf336d2b9bd2259280814df2 |
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15-Jan-2018 |
Jiwen 'Steve' Cai <jwcai@google.com> |
Add BufferHub backend for android::view::Surface This CL allows BufferHubProducer to be used as alternative backend of parcelable Surface. When sent over binder, BufferHubProducer serializes itself differently from Binder-based IGBP objects. Instead of writing to a Parcel object as strong binder object, BufferHubProducer asks libbufferhubqueue to generate a BufferHubQueueParcelable object (which packs all the FDs representing the BufferHub channel). When received from a binder interface, BufferHubProducer object can be reconstructed from the BufferHubQueueParcelable object. The newly constructed object has all the FDs (i.e. UDS channels) directly connected to bufferhubd. Thus, on going buffer transport operations can happen directly between the receiving process and bufferhubd. This elimates one extra binder hop. Bug: 37517761 Bug: 70046255 Test: libgui_test, buffer_transport_benchmark, buffer_hub_queue_producer-test, dvr_api-test, SurfaceParcelable_test Change-Id: I78bd879f36d3196f3d74c76c79d27467740792f7
/frameworks/native/libs/gui/view/Surface.cpp
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