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Diffstat (limited to 'widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferSlot.h')
-rw-r--r-- | widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferSlot.h | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferSlot.h b/widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferSlot.h deleted file mode 100644 index 759bb7b23..000000000 --- a/widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferSlot.h +++ /dev/null @@ -1,132 +0,0 @@ -/* - * Copyright 2014 The Android Open Source Project - * Copyright (C) 2014 Mozilla Foundation - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef NATIVEWINDOW_GONKBUFFERSLOT_LL_H -#define NATIVEWINDOW_GONKBUFFERSLOT_LL_H - -#include <ui/Fence.h> -#include <ui/GraphicBuffer.h> - -#include <utils/StrongPointer.h> - -#include "mozilla/layers/TextureClient.h" - -namespace android { - -struct GonkBufferSlot { - typedef mozilla::layers::TextureClient TextureClient; - - GonkBufferSlot() - : mBufferState(GonkBufferSlot::FREE), - mRequestBufferCalled(false), - mFrameNumber(0), - mAcquireCalled(false), - mNeedsCleanupOnRelease(false), - mAttachedByConsumer(false) { - } - - // mGraphicBuffer points to the buffer allocated for this slot or is NULL - // if no buffer has been allocated. - sp<GraphicBuffer> mGraphicBuffer; - - // BufferState represents the different states in which a buffer slot - // can be. All slots are initially FREE. - enum BufferState { - // FREE indicates that the buffer is available to be dequeued - // by the producer. The buffer may be in use by the consumer for - // a finite time, so the buffer must not be modified until the - // associated fence is signaled. - // - // The slot is "owned" by BufferQueue. It transitions to DEQUEUED - // when dequeueBuffer is called. - FREE = 0, - - // DEQUEUED indicates that the buffer has been dequeued by the - // producer, but has not yet been queued or canceled. The - // producer may modify the buffer's contents as soon as the - // associated ready fence is signaled. - // - // The slot is "owned" by the producer. It can transition to - // QUEUED (via queueBuffer) or back to FREE (via cancelBuffer). - DEQUEUED = 1, - - // QUEUED indicates that the buffer has been filled by the - // producer and queued for use by the consumer. The buffer - // contents may continue to be modified for a finite time, so - // the contents must not be accessed until the associated fence - // is signaled. - // - // The slot is "owned" by BufferQueue. It can transition to - // ACQUIRED (via acquireBuffer) or to FREE (if another buffer is - // queued in asynchronous mode). - QUEUED = 2, - - // ACQUIRED indicates that the buffer has been acquired by the - // consumer. As with QUEUED, the contents must not be accessed - // by the consumer until the fence is signaled. - // - // The slot is "owned" by the consumer. It transitions to FREE - // when releaseBuffer is called. - ACQUIRED = 3 - }; - - static const char* bufferStateName(BufferState state); - - // mBufferState is the current state of this buffer slot. - BufferState mBufferState; - - // mRequestBufferCalled is used for validating that the producer did - // call requestBuffer() when told to do so. Technically this is not - // needed but useful for debugging and catching producer bugs. - bool mRequestBufferCalled; - - // mFrameNumber is the number of the queued frame for this slot. This - // is used to dequeue buffers in LRU order (useful because buffers - // may be released before their release fence is signaled). - uint64_t mFrameNumber; - - // mFence is a fence which will signal when work initiated by the - // previous owner of the buffer is finished. When the buffer is FREE, - // the fence indicates when the consumer has finished reading - // from the buffer, or when the producer has finished writing if it - // called cancelBuffer after queueing some writes. When the buffer is - // QUEUED, it indicates when the producer has finished filling the - // buffer. When the buffer is DEQUEUED or ACQUIRED, the fence has been - // passed to the consumer or producer along with ownership of the - // buffer, and mFence is set to NO_FENCE. - sp<Fence> mFence; - - // Indicates whether this buffer has been seen by a consumer yet - bool mAcquireCalled; - - // Indicates whether this buffer needs to be cleaned up by the - // consumer. This is set when a buffer in ACQUIRED state is freed. - // It causes releaseBuffer to return STALE_BUFFER_SLOT. - bool mNeedsCleanupOnRelease; - - // Indicates whether the buffer was attached on the consumer side. - // If so, it needs to set the BUFFER_NEEDS_REALLOCATION flag when dequeued - // to prevent the producer from using a stale cached buffer. - bool mAttachedByConsumer; - - // mTextureClient is a thin abstraction over remotely allocated GraphicBuffer. - RefPtr<TextureClient> mTextureClient; -}; - -} // namespace android - -#endif |