Add BufferItemConsumer, a simple BufferQueue consumer.

BufferItemConsumer allows for acquiring BufferQueue's BufferItems,
which contain all the data and metadata the BufferQueue has for a
given graphics buffer.

This consumer is useful when direct access to the native buffer_handles
is needed by the client.

Also includes a minor cleanup of CpuConsumer's use of 'virtual'.

Bug: 6243944
Change-Id: If7dc4192b15ac499555f1eda42a85140f2434795

1 files changed, 3 insertions, 0 deletions

diff --git a/libs/gui/CpuConsumer.cpp b/libs/gui/CpuConsumer.cpp
index 90c8ea64bf..242ac45d30 100644
--- a/libs/gui/CpuConsumer.cpp
+++ b/libs/gui/CpuConsumer.cpp
@@ -43,6 +43,9 @@ CpuConsumer::CpuConsumer(uint32_t maxLockedBuffers) :
     mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
 }
 
+CpuConsumer::~CpuConsumer() {
+}
+
 void CpuConsumer::setName(const String8& name) {
     Mutex::Autolock _l(mMutex);
     mName = name;