media/codec2/sfplugin/CCodecBufferChannel.h - LeafOS-Project/android_frameworks_av - Gitiles

 /*
  * Copyright 2017, The Android Open Source Project
  *
  * 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 CCODEC_BUFFER_CHANNEL_H_

 #define CCODEC_BUFFER_CHANNEL_H_

 #include <deque>
 #include <map>
 #include <memory>
 #include <vector>

 #include <C2Buffer.h>
 #include <C2Component.h>
 #include <Codec2Mapper.h>

 #include <codec2/hidl/client.h>
 #include <media/stagefright/foundation/Mutexed.h>
 #include <media/stagefright/CodecBase.h>

 #include "CCodecBuffers.h"
 #include "FrameReassembler.h"
 #include "InputSurfaceWrapper.h"
 #include "PipelineWatcher.h"

 namespace android {

 class MemoryDealer;

 class CCodecCallback {
 public:
     virtual ~CCodecCallback() = default;
     virtual void onError(status_t err, enum ActionCode actionCode) = 0;
     virtual void onOutputFramesRendered(int64_t mediaTimeUs, nsecs_t renderTimeNs) = 0;
     virtual void onOutputBuffersChanged() = 0;
     virtual void onFirstTunnelFrameReady() = 0;
 };

 /**
  * BufferChannelBase implementation for CCodec.
  */
 class CCodecBufferChannel
     : public BufferChannelBase, public std::enable_shared_from_this<CCodecBufferChannel> {
 public:
     explicit CCodecBufferChannel(const std::shared_ptr<CCodecCallback> &callback);
     virtual ~CCodecBufferChannel();

     // BufferChannelBase interface
     void setCrypto(const sp<ICrypto> &crypto) override;
     void setDescrambler(const sp<IDescrambler> &descrambler) override;

     virtual status_t queueInputBuffer(const sp<MediaCodecBuffer> &buffer) override;
     virtual status_t queueSecureInputBuffer(
             const sp<MediaCodecBuffer> &buffer,
             bool secure,
             const uint8_t *key,
             const uint8_t *iv,
             CryptoPlugin::Mode mode,
             CryptoPlugin::Pattern pattern,
             const CryptoPlugin::SubSample *subSamples,
             size_t numSubSamples,
             AString *errorDetailMsg) override;
     virtual status_t attachBuffer(
             const std::shared_ptr<C2Buffer> &c2Buffer,
             const sp<MediaCodecBuffer> &buffer) override;
     virtual status_t attachEncryptedBuffer(
             const sp<hardware::HidlMemory> &memory,
             bool secure,
             const uint8_t *key,
             const uint8_t *iv,
             CryptoPlugin::Mode mode,
             CryptoPlugin::Pattern pattern,
             size_t offset,
             const CryptoPlugin::SubSample *subSamples,
             size_t numSubSamples,
             const sp<MediaCodecBuffer> &buffer,
             AString* errorDetailMsg) override;
     virtual status_t renderOutputBuffer(
             const sp<MediaCodecBuffer> &buffer, int64_t timestampNs) override;
     virtual void pollForRenderedBuffers() override;
     virtual status_t discardBuffer(const sp<MediaCodecBuffer> &buffer) override;
     virtual void getInputBufferArray(Vector<sp<MediaCodecBuffer>> *array) override;
     virtual void getOutputBufferArray(Vector<sp<MediaCodecBuffer>> *array) override;

     // Methods below are interface for CCodec to use.

     /**
      * Set the component object for buffer processing.
      */
     void setComponent(const std::shared_ptr<Codec2Client::Component> &component);

     /**
      * Set output graphic surface for rendering.
      */
     status_t setSurface(const sp<Surface> &surface, bool pushBlankBuffer);

     /**
      * Set GraphicBufferSource object from which the component extracts input
      * buffers.
      */
     status_t setInputSurface(const std::shared_ptr<InputSurfaceWrapper> &surface);

     /**
      * Signal EOS to input surface.
      */
     status_t signalEndOfInputStream();

     /**
      * Set parameters.
      */
     status_t setParameters(std::vector<std::unique_ptr<C2Param>> &params);

     /**
      * Start queueing buffers to the component. This object should never queue
      * buffers before this call has completed.
      */
     status_t start(
             const sp<AMessage> &inputFormat,
             const sp<AMessage> &outputFormat,
             bool buffersBoundToCodec);

     /**
      * Prepare initial input buffers to be filled by client.
      *
      * \param clientInputBuffers[out]   pointer to slot index -> buffer map.
      *                                  On success, it contains prepared
      *                                  initial input buffers.
      */
     status_t prepareInitialInputBuffers(
             std::map<size_t, sp<MediaCodecBuffer>> *clientInputBuffers,
             bool retry = false);

     /**
      * Request initial input buffers as prepared in clientInputBuffers.
      *
      * \param clientInputBuffers[in]    slot index -> buffer map with prepared
      *                                  initial input buffers.
      */
     status_t requestInitialInputBuffers(
             std::map<size_t, sp<MediaCodecBuffer>> &&clientInputBuffers);

     /**
      * Stop using buffers of the current output surface for other Codec
      * instances to use the surface safely.
      *
      * \param pushBlankBuffer[in]       push a blank buffer at the end if true
      */
     void stopUseOutputSurface(bool pushBlankBuffer);

     /**
      * Stop queueing buffers to the component. This object should never queue
      * buffers after this call, until start() is called.
      */
     void stop();

     /**
      * Stop queueing buffers to the component and release all buffers.
      */
     void reset();

     /**
      * Release all resources.
      */
     void release();

     void flush(const std::list<std::unique_ptr<C2Work>> &flushedWork);

     /**
      * Notify input client about work done.
      *
      * @param workItems   finished work item.
      * @param outputFormat new output format if it has changed, otherwise nullptr
      * @param initData    new init data (CSD) if it has changed, otherwise nullptr
      */
     void onWorkDone(
             std::unique_ptr<C2Work> work, const sp<AMessage> &outputFormat,
             const C2StreamInitDataInfo::output *initData);

     /**
      * Make an input buffer available for the client as it is no longer needed
      * by the codec.
      *
      * @param frameIndex The index of input work
      * @param arrayIndex The index of buffer in the input work buffers.
      */
     void onInputBufferDone(uint64_t frameIndex, size_t arrayIndex);

     PipelineWatcher::Clock::duration elapsed();

     enum MetaMode {
         MODE_NONE,
         MODE_ANW,
     };

     void setMetaMode(MetaMode mode);

     /**
      * get pixel format from output buffers.
      *
      * @return 0 if no valid pixel format found.
      */
     uint32_t getBuffersPixelFormat(bool isEncoder);

     void resetBuffersPixelFormat(bool isEncoder);

 private:
     uint32_t getInputBuffersPixelFormat();

     uint32_t getOutputBuffersPixelFormat();

     class QueueGuard;

     /**
      * Special mutex-like object with the following properties:
      *
      * - At STOPPED state (initial, or after stop())
      *   - QueueGuard object gets created at STOPPED state, and the client is
      *     supposed to return immediately.
      * - At RUNNING state (after start())
      *   - Each QueueGuard object
      */
     class QueueSync {
     public:
         /**
          * At construction the sync object is in STOPPED state.
          */
         inline QueueSync() {}
         ~QueueSync() = default;

         /**
          * Transition to RUNNING state when stopped. No-op if already in RUNNING
          * state.
          */
         void start();

         /**
          * At RUNNING state, wait until all QueueGuard object created during
          * RUNNING state are destroyed, and then transition to STOPPED state.
          * No-op if already in STOPPED state.
          */
         void stop();

     private:
         Mutex mGuardLock;

         struct Counter {
             inline Counter() : value(-1) {}
             int32_t value;
             Condition cond;
         };
         Mutexed<Counter> mCount;

         friend class CCodecBufferChannel::QueueGuard;
     };

     class QueueGuard {
     public:
         QueueGuard(QueueSync &sync);
         ~QueueGuard();
         inline bool isRunning() { return mRunning; }

     private:
         QueueSync &mSync;
         bool mRunning;
     };

     struct TrackedFrame {
         uint64_t number;
         int64_t mediaTimeUs;
         int64_t desiredRenderTimeNs;
         nsecs_t latchTime;
         sp<Fence> presentFence;
     };

     void feedInputBufferIfAvailable();
     void feedInputBufferIfAvailableInternal();
     status_t queueInputBufferInternal(sp<MediaCodecBuffer> buffer,
                                       std::shared_ptr<C2LinearBlock> encryptedBlock = nullptr,
                                       size_t blockSize = 0);
     bool handleWork(
             std::unique_ptr<C2Work> work, const sp<AMessage> &outputFormat,
             const C2StreamInitDataInfo::output *initData);
     void sendOutputBuffers();
     void ensureDecryptDestination(size_t size);
     int32_t getHeapSeqNum(const sp<hardware::HidlMemory> &memory);

     void initializeFrameTrackingFor(ANativeWindow * window);
     void trackReleasedFrame(const IGraphicBufferProducer::QueueBufferOutput& qbo,
                             int64_t mediaTimeUs, int64_t desiredRenderTimeNs);
     void processRenderedFrames(const FrameEventHistoryDelta& delta);
     int64_t getRenderTimeNs(const TrackedFrame& frame);

     QueueSync mSync;
     sp<MemoryDealer> mDealer;
     sp<IMemory> mDecryptDestination;
     int32_t mHeapSeqNum;
     std::map<wp<hardware::HidlMemory>, int32_t> mHeapSeqNumMap;

     std::shared_ptr<Codec2Client::Component> mComponent;
     std::string mComponentName; ///< component name for debugging
     const char *mName; ///< C-string version of component name
     std::shared_ptr<CCodecCallback> mCCodecCallback;
     std::shared_ptr<C2BlockPool> mInputAllocator;
     QueueSync mQueueSync;
     std::vector<std::unique_ptr<C2Param>> mParamsToBeSet;
     sp<AMessage> mOutputFormat;

     struct Input {
         Input();

         std::unique_ptr<InputBuffers> buffers;
         size_t numSlots;
         FlexBuffersImpl extraBuffers;
         size_t numExtraSlots;
         uint32_t inputDelay;
         uint32_t pipelineDelay;
         c2_cntr64_t lastFlushIndex;

         FrameReassembler frameReassembler;
     };
     Mutexed<Input> mInput;
     struct Output {
         std::unique_ptr<OutputBuffers> buffers;
         size_t numSlots;
         uint32_t outputDelay;
         // true iff the underlying block pool is bounded --- for example,
         // a BufferQueue-based block pool would be bounded by the BufferQueue.
         bool bounded;
     };
     Mutexed<Output> mOutput;
     Mutexed<std::list<std::unique_ptr<C2Work>>> mFlushedConfigs;

     std::atomic_uint64_t mFrameIndex;
     std::atomic_uint64_t mFirstValidFrameIndex;

     sp<MemoryDealer> makeMemoryDealer(size_t heapSize);

     std::deque<TrackedFrame> mTrackedFrames;
     bool mAreRenderMetricsEnabled;
     bool mIsSurfaceToDisplay;
     bool mHasPresentFenceTimes;

     struct OutputSurface {
         sp<Surface> surface;
         uint32_t generation;
         int maxDequeueBuffers;
         std::map<uint64_t, int> rotation;
     };
     Mutexed<OutputSurface> mOutputSurface;
     int mRenderingDepth;

     struct BlockPools {
         C2Allocator::id_t inputAllocatorId;
         std::shared_ptr<C2BlockPool> inputPool;
         C2Allocator::id_t outputAllocatorId;
         C2BlockPool::local_id_t outputPoolId;
         std::shared_ptr<Codec2Client::Configurable> outputPoolIntf;
     };
     Mutexed<BlockPools> mBlockPools;

     std::shared_ptr<InputSurfaceWrapper> mInputSurface;

     MetaMode mMetaMode;

     Mutexed<PipelineWatcher> mPipelineWatcher;

     std::atomic_bool mInputMetEos;
     std::once_flag mRenderWarningFlag;

     sp<ICrypto> mCrypto;
     sp<IDescrambler> mDescrambler;

     inline bool hasCryptoOrDescrambler() {
         return mCrypto != nullptr || mDescrambler != nullptr;
     }
     std::atomic_bool mSendEncryptedInfoBuffer;

     std::atomic_bool mTunneled;
 };

 // Conversion of a c2_status_t value to a status_t value may depend on the
 // operation that returns the c2_status_t value.
 enum c2_operation_t {
     C2_OPERATION_NONE,
     C2_OPERATION_Component_connectToOmxInputSurface,
     C2_OPERATION_Component_createBlockPool,
     C2_OPERATION_Component_destroyBlockPool,
     C2_OPERATION_Component_disconnectFromInputSurface,
     C2_OPERATION_Component_drain,
     C2_OPERATION_Component_flush,
     C2_OPERATION_Component_queue,
     C2_OPERATION_Component_release,
     C2_OPERATION_Component_reset,
     C2_OPERATION_Component_setOutputSurface,
     C2_OPERATION_Component_start,
     C2_OPERATION_Component_stop,
     C2_OPERATION_ComponentStore_copyBuffer,
     C2_OPERATION_ComponentStore_createComponent,
     C2_OPERATION_ComponentStore_createInputSurface,
     C2_OPERATION_ComponentStore_createInterface,
     C2_OPERATION_Configurable_config,
     C2_OPERATION_Configurable_query,
     C2_OPERATION_Configurable_querySupportedParams,
     C2_OPERATION_Configurable_querySupportedValues,
     C2_OPERATION_InputSurface_connectToComponent,
     C2_OPERATION_InputSurfaceConnection_disconnect,
 };

 status_t toStatusT(c2_status_t c2s, c2_operation_t c2op = C2_OPERATION_NONE);

 }  // namespace android

 #endif  // CCODEC_BUFFER_CHANNEL_H_
	/*
	* Copyright 2017, The Android Open Source Project
	*
	* 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 CCODEC_BUFFER_CHANNEL_H_

	#define CCODEC_BUFFER_CHANNEL_H_

	#include <deque>
	#include <map>
	#include <memory>
	#include <vector>

	#include <C2Buffer.h>
	#include <C2Component.h>
	#include <Codec2Mapper.h>

	#include <codec2/hidl/client.h>
	#include <media/stagefright/foundation/Mutexed.h>
	#include <media/stagefright/CodecBase.h>

	#include "CCodecBuffers.h"
	#include "FrameReassembler.h"
	#include "InputSurfaceWrapper.h"
	#include "PipelineWatcher.h"

	namespace android {

	class MemoryDealer;

	class CCodecCallback {
	public:
	virtual ~CCodecCallback() = default;
	virtual void onError(status_t err, enum ActionCode actionCode) = 0;
	virtual void onOutputFramesRendered(int64_t mediaTimeUs, nsecs_t renderTimeNs) = 0;
	virtual void onOutputBuffersChanged() = 0;
	virtual void onFirstTunnelFrameReady() = 0;
	};

	/**
	* BufferChannelBase implementation for CCodec.
	*/
	class CCodecBufferChannel
	: public BufferChannelBase, public std::enable_shared_from_this<CCodecBufferChannel> {
	public:
	explicit CCodecBufferChannel(const std::shared_ptr<CCodecCallback> &callback);
	virtual ~CCodecBufferChannel();

	// BufferChannelBase interface
	void setCrypto(const sp<ICrypto> &crypto) override;
	void setDescrambler(const sp<IDescrambler> &descrambler) override;

	virtual status_t queueInputBuffer(const sp<MediaCodecBuffer> &buffer) override;
	virtual status_t queueSecureInputBuffer(
	const sp<MediaCodecBuffer> &buffer,
	bool secure,
	const uint8_t *key,
	const uint8_t *iv,
	CryptoPlugin::Mode mode,
	CryptoPlugin::Pattern pattern,
	const CryptoPlugin::SubSample *subSamples,
	size_t numSubSamples,
	AString *errorDetailMsg) override;
	virtual status_t attachBuffer(
	const std::shared_ptr<C2Buffer> &c2Buffer,
	const sp<MediaCodecBuffer> &buffer) override;
	virtual status_t attachEncryptedBuffer(
	const sp<hardware::HidlMemory> &memory,
	bool secure,
	const uint8_t *key,
	const uint8_t *iv,
	CryptoPlugin::Mode mode,
	CryptoPlugin::Pattern pattern,
	size_t offset,
	const CryptoPlugin::SubSample *subSamples,
	size_t numSubSamples,
	const sp<MediaCodecBuffer> &buffer,
	AString* errorDetailMsg) override;
	virtual status_t renderOutputBuffer(
	const sp<MediaCodecBuffer> &buffer, int64_t timestampNs) override;
	virtual void pollForRenderedBuffers() override;
	virtual status_t discardBuffer(const sp<MediaCodecBuffer> &buffer) override;
	virtual void getInputBufferArray(Vector<sp<MediaCodecBuffer>> *array) override;
	virtual void getOutputBufferArray(Vector<sp<MediaCodecBuffer>> *array) override;

	// Methods below are interface for CCodec to use.

	/**
	* Set the component object for buffer processing.
	*/
	void setComponent(const std::shared_ptr<Codec2Client::Component> &component);

	/**
	* Set output graphic surface for rendering.
	*/
	status_t setSurface(const sp<Surface> &surface, bool pushBlankBuffer);

	/**
	* Set GraphicBufferSource object from which the component extracts input
	* buffers.
	*/
	status_t setInputSurface(const std::shared_ptr<InputSurfaceWrapper> &surface);

	/**
	* Signal EOS to input surface.
	*/
	status_t signalEndOfInputStream();

	/**
	* Set parameters.
	*/
	status_t setParameters(std::vector<std::unique_ptr<C2Param>> &params);

	/**
	* Start queueing buffers to the component. This object should never queue
	* buffers before this call has completed.
	*/
	status_t start(
	const sp<AMessage> &inputFormat,
	const sp<AMessage> &outputFormat,
	bool buffersBoundToCodec);

	/**
	* Prepare initial input buffers to be filled by client.
	*
	* \param clientInputBuffers[out] pointer to slot index -> buffer map.
	* On success, it contains prepared
	* initial input buffers.
	*/
	status_t prepareInitialInputBuffers(
	std::map<size_t, sp<MediaCodecBuffer>> *clientInputBuffers,
	bool retry = false);

	/**
	* Request initial input buffers as prepared in clientInputBuffers.
	*
	* \param clientInputBuffers[in] slot index -> buffer map with prepared
	* initial input buffers.
	*/
	status_t requestInitialInputBuffers(
	std::map<size_t, sp<MediaCodecBuffer>> &&clientInputBuffers);

	/**
	* Stop using buffers of the current output surface for other Codec
	* instances to use the surface safely.
	*
	* \param pushBlankBuffer[in] push a blank buffer at the end if true
	*/
	void stopUseOutputSurface(bool pushBlankBuffer);

	/**
	* Stop queueing buffers to the component. This object should never queue
	* buffers after this call, until start() is called.
	*/
	void stop();

	/**
	* Stop queueing buffers to the component and release all buffers.
	*/
	void reset();

	/**
	* Release all resources.
	*/
	void release();

	void flush(const std::list<std::unique_ptr<C2Work>> &flushedWork);

	/**
	* Notify input client about work done.
	*
	* @param workItems finished work item.
	* @param outputFormat new output format if it has changed, otherwise nullptr
	* @param initData new init data (CSD) if it has changed, otherwise nullptr
	*/
	void onWorkDone(
	std::unique_ptr<C2Work> work, const sp<AMessage> &outputFormat,
	const C2StreamInitDataInfo::output *initData);

	/**
	* Make an input buffer available for the client as it is no longer needed
	* by the codec.
	*
	* @param frameIndex The index of input work
	* @param arrayIndex The index of buffer in the input work buffers.
	*/
	void onInputBufferDone(uint64_t frameIndex, size_t arrayIndex);

	PipelineWatcher::Clock::duration elapsed();

	enum MetaMode {
	MODE_NONE,
	MODE_ANW,
	};

	void setMetaMode(MetaMode mode);

	/**
	* get pixel format from output buffers.
	*
	* @return 0 if no valid pixel format found.
	*/
	uint32_t getBuffersPixelFormat(bool isEncoder);

	void resetBuffersPixelFormat(bool isEncoder);

	private:
	uint32_t getInputBuffersPixelFormat();

	uint32_t getOutputBuffersPixelFormat();

	class QueueGuard;

	/**
	* Special mutex-like object with the following properties:
	*
	* - At STOPPED state (initial, or after stop())
	* - QueueGuard object gets created at STOPPED state, and the client is
	* supposed to return immediately.
	* - At RUNNING state (after start())
	* - Each QueueGuard object
	*/
	class QueueSync {
	public:
	/**
	* At construction the sync object is in STOPPED state.
	*/
	inline QueueSync() {}
	~QueueSync() = default;

	/**
	* Transition to RUNNING state when stopped. No-op if already in RUNNING
	* state.
	*/
	void start();

	/**
	* At RUNNING state, wait until all QueueGuard object created during
	* RUNNING state are destroyed, and then transition to STOPPED state.
	* No-op if already in STOPPED state.
	*/
	void stop();

	private:
	Mutex mGuardLock;

	struct Counter {
	inline Counter() : value(-1) {}
	int32_t value;
	Condition cond;
	};
	Mutexed<Counter> mCount;

	friend class CCodecBufferChannel::QueueGuard;
	};

	class QueueGuard {
	public:
	QueueGuard(QueueSync &sync);
	~QueueGuard();
	inline bool isRunning() { return mRunning; }

	private:
	QueueSync &mSync;
	bool mRunning;
	};

	struct TrackedFrame {
	uint64_t number;
	int64_t mediaTimeUs;
	int64_t desiredRenderTimeNs;
	nsecs_t latchTime;
	sp<Fence> presentFence;
	};

	void feedInputBufferIfAvailable();
	void feedInputBufferIfAvailableInternal();
	status_t queueInputBufferInternal(sp<MediaCodecBuffer> buffer,
	std::shared_ptr<C2LinearBlock> encryptedBlock = nullptr,
	size_t blockSize = 0);
	bool handleWork(
	std::unique_ptr<C2Work> work, const sp<AMessage> &outputFormat,
	const C2StreamInitDataInfo::output *initData);
	void sendOutputBuffers();
	void ensureDecryptDestination(size_t size);
	int32_t getHeapSeqNum(const sp<hardware::HidlMemory> &memory);

	void initializeFrameTrackingFor(ANativeWindow * window);
	void trackReleasedFrame(const IGraphicBufferProducer::QueueBufferOutput& qbo,
	int64_t mediaTimeUs, int64_t desiredRenderTimeNs);
	void processRenderedFrames(const FrameEventHistoryDelta& delta);
	int64_t getRenderTimeNs(const TrackedFrame& frame);

	QueueSync mSync;
	sp<MemoryDealer> mDealer;
	sp<IMemory> mDecryptDestination;
	int32_t mHeapSeqNum;
	std::map<wp<hardware::HidlMemory>, int32_t> mHeapSeqNumMap;

	std::shared_ptr<Codec2Client::Component> mComponent;
	std::string mComponentName; ///< component name for debugging
	const char *mName; ///< C-string version of component name
	std::shared_ptr<CCodecCallback> mCCodecCallback;
	std::shared_ptr<C2BlockPool> mInputAllocator;
	QueueSync mQueueSync;
	std::vector<std::unique_ptr<C2Param>> mParamsToBeSet;
	sp<AMessage> mOutputFormat;

	struct Input {
	Input();

	std::unique_ptr<InputBuffers> buffers;
	size_t numSlots;
	FlexBuffersImpl extraBuffers;
	size_t numExtraSlots;
	uint32_t inputDelay;
	uint32_t pipelineDelay;
	c2_cntr64_t lastFlushIndex;

	FrameReassembler frameReassembler;
	};
	Mutexed<Input> mInput;
	struct Output {
	std::unique_ptr<OutputBuffers> buffers;
	size_t numSlots;
	uint32_t outputDelay;
	// true iff the underlying block pool is bounded --- for example,
	// a BufferQueue-based block pool would be bounded by the BufferQueue.
	bool bounded;
	};
	Mutexed<Output> mOutput;
	Mutexed<std::list<std::unique_ptr<C2Work>>> mFlushedConfigs;

	std::atomic_uint64_t mFrameIndex;
	std::atomic_uint64_t mFirstValidFrameIndex;

	sp<MemoryDealer> makeMemoryDealer(size_t heapSize);

	std::deque<TrackedFrame> mTrackedFrames;
	bool mAreRenderMetricsEnabled;
	bool mIsSurfaceToDisplay;
	bool mHasPresentFenceTimes;

	struct OutputSurface {
	sp<Surface> surface;
	uint32_t generation;
	int maxDequeueBuffers;
	std::map<uint64_t, int> rotation;
	};
	Mutexed<OutputSurface> mOutputSurface;
	int mRenderingDepth;

	struct BlockPools {
	C2Allocator::id_t inputAllocatorId;
	std::shared_ptr<C2BlockPool> inputPool;
	C2Allocator::id_t outputAllocatorId;
	C2BlockPool::local_id_t outputPoolId;
	std::shared_ptr<Codec2Client::Configurable> outputPoolIntf;
	};
	Mutexed<BlockPools> mBlockPools;

	std::shared_ptr<InputSurfaceWrapper> mInputSurface;

	MetaMode mMetaMode;

	Mutexed<PipelineWatcher> mPipelineWatcher;

	std::atomic_bool mInputMetEos;
	std::once_flag mRenderWarningFlag;

	sp<ICrypto> mCrypto;
	sp<IDescrambler> mDescrambler;

	inline bool hasCryptoOrDescrambler() {
	return mCrypto != nullptr \|\| mDescrambler != nullptr;
	}
	std::atomic_bool mSendEncryptedInfoBuffer;

	std::atomic_bool mTunneled;
	};

	// Conversion of a c2_status_t value to a status_t value may depend on the
	// operation that returns the c2_status_t value.
	enum c2_operation_t {
	C2_OPERATION_NONE,
	C2_OPERATION_Component_connectToOmxInputSurface,
	C2_OPERATION_Component_createBlockPool,
	C2_OPERATION_Component_destroyBlockPool,
	C2_OPERATION_Component_disconnectFromInputSurface,
	C2_OPERATION_Component_drain,
	C2_OPERATION_Component_flush,
	C2_OPERATION_Component_queue,
	C2_OPERATION_Component_release,
	C2_OPERATION_Component_reset,
	C2_OPERATION_Component_setOutputSurface,
	C2_OPERATION_Component_start,
	C2_OPERATION_Component_stop,
	C2_OPERATION_ComponentStore_copyBuffer,
	C2_OPERATION_ComponentStore_createComponent,
	C2_OPERATION_ComponentStore_createInputSurface,
	C2_OPERATION_ComponentStore_createInterface,
	C2_OPERATION_Configurable_config,
	C2_OPERATION_Configurable_query,
	C2_OPERATION_Configurable_querySupportedParams,
	C2_OPERATION_Configurable_querySupportedValues,
	C2_OPERATION_InputSurface_connectToComponent,
	C2_OPERATION_InputSurfaceConnection_disconnect,
	};

	status_t toStatusT(c2_status_t c2s, c2_operation_t c2op = C2_OPERATION_NONE);

	} // namespace android

	#endif // CCODEC_BUFFER_CHANNEL_H_