This adds an allocateBuffers method to BufferQueue, which instructs
it to allocate up to the maximum number of buffers allowed by the
current configuration. The goal is that this method can be called
ahead of render time, which will prevent dequeueBuffers from blocking
in allocation and inducing jank.
This interface is also plumbed up to the native Surface (and, in
another change, up to the Java Surface and ThreadedRenderer).
Bug: 11792166
Change-Id: I4aa96b4351ea1c95ed5db228ca3ef98303229c74
Adds logic to dequeueBuffer that blocks if there are currently too
many buffers in the queue. This prevents unbounded growth around
times where the slots are cleared but the queue is not (e.g.,
during rapid connect/disconnect or setBufferCount activity). This
replaces the fix from ag/377958 in a more general way.
Bug: 11293214
Change-Id: Ieb7adfcd076ff7ffe3d4d369397b2c29cf5099c3
Adds a new method, IGBP::detachNextBuffer, that effectively does
dequeue + request + detach in a single call, but does not need to
know anything about the dequeued buffer, and will not block on
dequeue. This is mostly for the upcoming StreamSplitter to use in
its onBufferReleased callback.
Change-Id: Ie88a69de109003acebaa486a5b44c8a455726550
- Notify a listener when sideband stream is set
- Mark a layer as visible when sideband stream is set, even though
no buffer is queued.
Change-Id: I9652bf530f2b5ce331533ec1bb3b10a815ca191c
Add a callback to the producer side, onBufferReleased, which will be
called every time the consumer releases a buffer back to the
BufferQueue. This will enable a buffer stream splitter to work
autonomously without having to block on dequeueBuffer.
The binder object used for the callback replaces the generic IBinder
token that was passed into IGraphicBufferProducer::connect to detect
the death of the producer. If a producer does not wish to listen for
buffer release events, it can pass in an instance of the
DummyProducerListener class defined in IProducerListener.h, if it even
cares about death events (BufferQueue doesn't enforce the token being
non-NULL, though perhaps we should).
Change-Id: I23935760673524abeafea2b58dccc3583b368710
When a buffer is attached to the producer side, it needs to be marked
as having been requested so that it can be queued successfully.
Change-Id: I90a88b332c415a57921bd094ae635afdf65bff99
Sideband streams are essentially a device-specific buffer queue that
bypasses the BufferQueue system. They can be used for situations with
hard real-time requirements like high-quality TV and video playback
with A/V sync. A handle to the stream is provided by the source HAL,
and attached to a BufferQueue. The sink HAL can read buffers via the
stream handle rather than acquiring individual buffers from the
BufferQueue.
Change-Id: Ib3f262eddfc520f4bbe3d9b91753ed7dd09d3a9b
Adds detachBuffer and attachBuffer calls to both the producer and
consumer sides of BufferQueue. Buffers may be detached while dequeued
by the producer or acquired by the consumer, and when attached, enter
the dequeued and acquired states, respectively.
Bug: 13173343
Change-Id: Ic152692b0a94d99e0135b9bfa62747dab2a54220
Now that BufferQueue has been split into core + producer + consumer,
rewrite BufferQueue to be a thin layer over a producer and consumer
interface. Eventually, this layer will be deprecated in favor of
only using either the producer or consumer interface, as applicable.
Change-Id: I340ae5f5b633b244fb594615ff52ba50b9e2f7e4
