From bc2df65a3f3f4b8abaaaa2a4e576a3a42c2d30f3 Mon Sep 17 00:00:00 2001 From: Eino-Ville Talvala Date: Thu, 21 Jul 2016 17:06:58 -0700 Subject: BufferQueue consumers: Add discardFreeBuffer method This method releases all free buffers owned by the buffer queue, in order to save memory (at the cost of potential future reallocation of buffers). Bug: 28695173 Change-Id: I458d10373e639e3144faf673af2ba01aca36e65a --- libs/gui/IGraphicBufferConsumer.cpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'libs/gui/IGraphicBufferConsumer.cpp') diff --git a/libs/gui/IGraphicBufferConsumer.cpp b/libs/gui/IGraphicBufferConsumer.cpp index 7c4379f41e..c8eff00e3f 100644 --- a/libs/gui/IGraphicBufferConsumer.cpp +++ b/libs/gui/IGraphicBufferConsumer.cpp @@ -52,6 +52,7 @@ enum { SET_TRANSFORM_HINT, GET_SIDEBAND_STREAM, GET_OCCUPANCY_HISTORY, + DISCARD_FREE_BUFFERS, DUMP, }; @@ -286,6 +287,21 @@ public: return result; } + virtual status_t discardFreeBuffers() { + Parcel data, reply; + data.writeInterfaceToken(IGraphicBufferConsumer::getInterfaceDescriptor()); + status_t error = remote()->transact(DISCARD_FREE_BUFFERS, data, &reply); + if (error != NO_ERROR) { + return error; + } + int32_t result = NO_ERROR; + error = reply.readInt32(&result); + if (error != NO_ERROR) { + return error; + } + return result; + } + virtual void dump(String8& result, const char* prefix) const { Parcel data, reply; data.writeInterfaceToken(IGraphicBufferConsumer::getInterfaceDescriptor()); @@ -454,6 +470,12 @@ status_t BnGraphicBufferConsumer::onTransact( } return NO_ERROR; } + case DISCARD_FREE_BUFFERS: { + CHECK_INTERFACE(IGraphicBufferConsumer, data, reply); + status_t result = discardFreeBuffers(); + status_t error = reply->writeInt32(result); + return error; + } case DUMP: { CHECK_INTERFACE(IGraphicBufferConsumer, data, reply); String8 result = data.readString8(); -- cgit v1.2.3-59-g8ed1b