Dan Stoza | 289ade1 | 2014-02-28 11:17:17 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_GUI_BUFFERQUEUECORE_H |
| 18 | #define ANDROID_GUI_BUFFERQUEUECORE_H |
| 19 | |
| 20 | #include <gui/BufferSlot.h> |
| 21 | |
| 22 | #include <utils/Condition.h> |
| 23 | #include <utils/Mutex.h> |
| 24 | #include <utils/RefBase.h> |
| 25 | #include <utils/String8.h> |
| 26 | #include <utils/StrongPointer.h> |
| 27 | #include <utils/Trace.h> |
| 28 | #include <utils/Vector.h> |
| 29 | |
| 30 | #define BQ_LOGV(x, ...) ALOGV("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) |
| 31 | #define BQ_LOGD(x, ...) ALOGD("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) |
| 32 | #define BQ_LOGI(x, ...) ALOGI("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) |
| 33 | #define BQ_LOGW(x, ...) ALOGW("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) |
| 34 | #define BQ_LOGE(x, ...) ALOGE("[%s] "x, mConsumerName.string(), ##__VA_ARGS__) |
| 35 | |
| 36 | #define ATRACE_BUFFER_INDEX(index) \ |
| 37 | if (ATRACE_ENABLED()) { \ |
| 38 | char ___traceBuf[1024]; \ |
| 39 | snprintf(___traceBuf, 1024, "%s: %d", \ |
| 40 | mCore->mConsumerName.string(), (index)); \ |
| 41 | android::ScopedTrace ___bufTracer(ATRACE_TAG, ___traceBuf); \ |
| 42 | } |
| 43 | |
| 44 | namespace android { |
| 45 | |
| 46 | class BufferItem; |
| 47 | class IBinder; |
| 48 | class IConsumerListener; |
| 49 | class IGraphicBufferAlloc; |
| 50 | |
| 51 | class BufferQueueCore : public virtual RefBase { |
| 52 | |
| 53 | friend class BufferQueueProducer; |
| 54 | friend class BufferQueueConsumer; |
| 55 | |
| 56 | public: |
| 57 | // BufferQueue will keep track of at most this value of buffers. Attempts |
| 58 | // at runtime to increase the number of buffers past this will fail. |
| 59 | enum { NUM_BUFFER_SLOTS = 32 }; |
| 60 | |
| 61 | // Used as a placeholder slot number when the value isn't pointing to an |
| 62 | // existing buffer. |
| 63 | enum { INVALID_BUFFER_SLOT = -1 }; // TODO: Extract from IGBC::BufferItem |
| 64 | |
| 65 | // We reserve two slots in order to guarantee that the producer and |
| 66 | // consumer can run asynchronously. |
| 67 | enum { MAX_MAX_ACQUIRED_BUFFERS = NUM_BUFFER_SLOTS - 2 }; |
| 68 | |
| 69 | // The default API number used to indicate that no producer is connected |
| 70 | enum { NO_CONNECTED_API = 0 }; |
| 71 | |
| 72 | typedef BufferSlot SlotsType[NUM_BUFFER_SLOTS]; |
| 73 | typedef Vector<BufferItem> Fifo; |
| 74 | |
| 75 | // BufferQueueCore manages a pool of gralloc memory slots to be used by |
| 76 | // producers and consumers. allocator is used to allocate all the needed |
| 77 | // gralloc buffers. |
| 78 | BufferQueueCore(const sp<IGraphicBufferAlloc>& allocator = NULL); |
| 79 | virtual ~BufferQueueCore(); |
| 80 | |
| 81 | private: |
| 82 | void dump(String8& result, const char* prefix) const; |
| 83 | |
| 84 | int getMinUndequeuedBufferCountLocked(bool async) const; |
| 85 | int getMinMaxBufferCountLocked(bool async) const; |
| 86 | int getMaxBufferCountLocked(bool async) const; |
| 87 | status_t setDefaultMaxBufferCountLocked(int count); |
| 88 | void freeBufferLocked(int slot); |
| 89 | void freeAllBuffersLocked(); |
| 90 | bool stillTracking(const BufferItem* item) const; |
| 91 | |
| 92 | const sp<IGraphicBufferAlloc>& mAllocator; |
| 93 | mutable Mutex mMutex; |
| 94 | bool mIsAbandoned; |
| 95 | bool mConsumerControlledByApp; |
| 96 | String8 mConsumerName; |
| 97 | sp<IConsumerListener> mConsumerListener; |
| 98 | uint32_t mConsumerUsageBits; |
| 99 | int mConnectedApi; |
| 100 | sp<IBinder> mConnectedProducerToken; |
| 101 | BufferSlot mSlots[NUM_BUFFER_SLOTS]; |
| 102 | Fifo mQueue; |
| 103 | int mOverrideMaxBufferCount; |
| 104 | mutable Condition mDequeueCondition; |
| 105 | bool mUseAsyncBuffer; |
| 106 | bool mDequeueBufferCannotBlock; |
| 107 | uint32_t mDefaultBufferFormat; |
| 108 | int mDefaultWidth; |
| 109 | int mDefaultHeight; |
| 110 | int mDefaultMaxBufferCount; |
| 111 | int mMaxAcquiredBufferCount; |
| 112 | bool mBufferHasBeenQueued; |
| 113 | uint64_t mFrameCounter; |
| 114 | uint32_t mTransformHint; |
| 115 | |
| 116 | }; // class BufferQueueCore |
| 117 | |
| 118 | } // namespace android |
| 119 | |
| 120 | #endif |