121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
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/*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_GUI_BUFFERQUEUECORE_H
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#define ANDROID_GUI_BUFFERQUEUECORE_H
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#include <gui/BufferSlot.h>
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#include <utils/Condition.h>
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#include <utils/Mutex.h>
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#include <utils/RefBase.h>
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#include <utils/String8.h>
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#include <utils/StrongPointer.h>
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#include <utils/Trace.h>
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#include <utils/Vector.h>
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#define BQ_LOGV(x, ...) ALOGV("[%s] "x, mConsumerName.string(), ##__VA_ARGS__)
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#define BQ_LOGD(x, ...) ALOGD("[%s] "x, mConsumerName.string(), ##__VA_ARGS__)
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#define BQ_LOGI(x, ...) ALOGI("[%s] "x, mConsumerName.string(), ##__VA_ARGS__)
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#define BQ_LOGW(x, ...) ALOGW("[%s] "x, mConsumerName.string(), ##__VA_ARGS__)
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#define BQ_LOGE(x, ...) ALOGE("[%s] "x, mConsumerName.string(), ##__VA_ARGS__)
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#define ATRACE_BUFFER_INDEX(index) \
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if (ATRACE_ENABLED()) { \
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char ___traceBuf[1024]; \
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snprintf(___traceBuf, 1024, "%s: %d", \
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mCore->mConsumerName.string(), (index)); \
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android::ScopedTrace ___bufTracer(ATRACE_TAG, ___traceBuf); \
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}
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namespace android {
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class BufferItem;
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class IBinder;
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class IConsumerListener;
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class IGraphicBufferAlloc;
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class BufferQueueCore : public virtual RefBase {
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friend class BufferQueueProducer;
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friend class BufferQueueConsumer;
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public:
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// BufferQueue will keep track of at most this value of buffers. Attempts
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// at runtime to increase the number of buffers past this will fail.
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enum { NUM_BUFFER_SLOTS = 32 };
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// Used as a placeholder slot number when the value isn't pointing to an
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// existing buffer.
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enum { INVALID_BUFFER_SLOT = -1 }; // TODO: Extract from IGBC::BufferItem
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// We reserve two slots in order to guarantee that the producer and
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// consumer can run asynchronously.
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enum { MAX_MAX_ACQUIRED_BUFFERS = NUM_BUFFER_SLOTS - 2 };
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// The default API number used to indicate that no producer is connected
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enum { NO_CONNECTED_API = 0 };
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typedef BufferSlot SlotsType[NUM_BUFFER_SLOTS];
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typedef Vector<BufferItem> Fifo;
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// BufferQueueCore manages a pool of gralloc memory slots to be used by
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// producers and consumers. allocator is used to allocate all the needed
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// gralloc buffers.
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BufferQueueCore(const sp<IGraphicBufferAlloc>& allocator = NULL);
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virtual ~BufferQueueCore();
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private:
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void dump(String8& result, const char* prefix) const;
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int getMinUndequeuedBufferCountLocked(bool async) const;
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int getMinMaxBufferCountLocked(bool async) const;
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int getMaxBufferCountLocked(bool async) const;
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status_t setDefaultMaxBufferCountLocked(int count);
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void freeBufferLocked(int slot);
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void freeAllBuffersLocked();
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bool stillTracking(const BufferItem* item) const;
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const sp<IGraphicBufferAlloc>& mAllocator;
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mutable Mutex mMutex;
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bool mIsAbandoned;
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bool mConsumerControlledByApp;
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String8 mConsumerName;
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sp<IConsumerListener> mConsumerListener;
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uint32_t mConsumerUsageBits;
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int mConnectedApi;
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sp<IBinder> mConnectedProducerToken;
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BufferSlot mSlots[NUM_BUFFER_SLOTS];
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Fifo mQueue;
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int mOverrideMaxBufferCount;
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mutable Condition mDequeueCondition;
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bool mUseAsyncBuffer;
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bool mDequeueBufferCannotBlock;
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uint32_t mDefaultBufferFormat;
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int mDefaultWidth;
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int mDefaultHeight;
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int mDefaultMaxBufferCount;
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int mMaxAcquiredBufferCount;
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bool mBufferHasBeenQueued;
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uint64_t mFrameCounter;
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uint32_t mTransformHint;
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}; // class BufferQueueCore
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} // namespace android
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#endif
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