Camera3OutputStream.cpp

/*
 * Copyright (C) 2013-2018 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.
 */

#define LOG_TAG "Camera3-OutputStream"
#define ATRACE_TAG ATRACE_TAG_CAMERA
//#define LOG_NDEBUG 0

#include <algorithm>
#include <ctime>
#include <fstream>

#include <aidl/android/hardware/camera/device/CameraBlob.h>
#include <aidl/android/hardware/camera/device/CameraBlobId.h>

#include <android-base/unique_fd.h>
#include <cutils/properties.h>
#include <ui/GraphicBuffer.h>
#include <utils/Log.h>
#include <utils/Trace.h>

#include <common/CameraDeviceBase.h>
#include "api1/client2/JpegProcessor.h"
#include "Camera3OutputStream.h"
#include "utils/TraceHFR.h"

#ifndef container_of
#define container_of(ptr, type, member) \
    (type *)((char*)(ptr) - offsetof(type, member))
#endif

namespace android {

namespace camera3 {

using aidl::android::hardware::camera::device::CameraBlob;
using aidl::android::hardware::camera::device::CameraBlobId;

Camera3OutputStream::Camera3OutputStream(int id,
        sp<Surface> consumer,
        uint32_t width, uint32_t height, int format,
        android_dataspace dataSpace, camera_stream_rotation_t rotation,
        nsecs_t timestampOffset, const String8& physicalCameraId,
        const std::unordered_set<int32_t> &sensorPixelModesUsed, IPCTransport transport,
        int setId, bool isMultiResolution, int64_t dynamicRangeProfile,
        int64_t streamUseCase, bool deviceTimeBaseIsRealtime, int timestampBase,
        int mirrorMode) :
        Camera3IOStreamBase(id, CAMERA_STREAM_OUTPUT, width, height,
                            /*maxSize*/0, format, dataSpace, rotation,
                            physicalCameraId, sensorPixelModesUsed, setId, isMultiResolution,
                            dynamicRangeProfile, streamUseCase, deviceTimeBaseIsRealtime,
                            timestampBase),
        mConsumer(consumer),
        mTransform(0),
        mTraceFirstBuffer(true),
        mUseBufferManager(false),
        mTimestampOffset(timestampOffset),
        mUseReadoutTime(false),
        mConsumerUsage(0),
        mDropBuffers(false),
        mMirrorMode(mirrorMode),
        mDequeueBufferLatency(kDequeueLatencyBinSize),
        mIPCTransport(transport) {

    if (mConsumer == NULL) {
        ALOGE("%s: Consumer is NULL!", __FUNCTION__);
        mState = STATE_ERROR;
    }

    bool needsReleaseNotify = setId > CAMERA3_STREAM_SET_ID_INVALID;
    mBufferProducerListener = new BufferProducerListener(this, needsReleaseNotify);
}

Camera3OutputStream::Camera3OutputStream(int id,
        sp<Surface> consumer,
        uint32_t width, uint32_t height, size_t maxSize, int format,
        android_dataspace dataSpace, camera_stream_rotation_t rotation,
        nsecs_t timestampOffset, const String8& physicalCameraId,
        const std::unordered_set<int32_t> &sensorPixelModesUsed, IPCTransport transport,
        int setId, bool isMultiResolution, int64_t dynamicRangeProfile,
        int64_t streamUseCase, bool deviceTimeBaseIsRealtime, int timestampBase,
        int mirrorMode) :
        Camera3IOStreamBase(id, CAMERA_STREAM_OUTPUT, width, height, maxSize,
                            format, dataSpace, rotation, physicalCameraId, sensorPixelModesUsed,
                            setId, isMultiResolution, dynamicRangeProfile, streamUseCase,
                            deviceTimeBaseIsRealtime, timestampBase),
        mConsumer(consumer),
        mTransform(0),
        mTraceFirstBuffer(true),
        mUseBufferManager(false),
        mTimestampOffset(timestampOffset),
        mUseReadoutTime(false),
        mConsumerUsage(0),
        mDropBuffers(false),
        mMirrorMode(mirrorMode),
        mDequeueBufferLatency(kDequeueLatencyBinSize),
        mIPCTransport(transport) {

    if (format != HAL_PIXEL_FORMAT_BLOB && format != HAL_PIXEL_FORMAT_RAW_OPAQUE) {
        ALOGE("%s: Bad format for size-only stream: %d", __FUNCTION__,
                format);
        mState = STATE_ERROR;
    }

    if (mConsumer == NULL) {
        ALOGE("%s: Consumer is NULL!", __FUNCTION__);
        mState = STATE_ERROR;
    }

    bool needsReleaseNotify = setId > CAMERA3_STREAM_SET_ID_INVALID;
    mBufferProducerListener = new BufferProducerListener(this, needsReleaseNotify);
}

Camera3OutputStream::Camera3OutputStream(int id,
        uint32_t width, uint32_t height, int format,
        uint64_t consumerUsage, android_dataspace dataSpace,
        camera_stream_rotation_t rotation, nsecs_t timestampOffset,
        const String8& physicalCameraId,
        const std::unordered_set<int32_t> &sensorPixelModesUsed, IPCTransport transport,
        int setId, bool isMultiResolution, int64_t dynamicRangeProfile,
        int64_t streamUseCase, bool deviceTimeBaseIsRealtime, int timestampBase,
        int mirrorMode) :
        Camera3IOStreamBase(id, CAMERA_STREAM_OUTPUT, width, height,
                            /*maxSize*/0, format, dataSpace, rotation,
                            physicalCameraId, sensorPixelModesUsed, setId, isMultiResolution,
                            dynamicRangeProfile, streamUseCase, deviceTimeBaseIsRealtime,
                            timestampBase),
        mConsumer(nullptr),
        mTransform(0),
        mTraceFirstBuffer(true),
        mUseBufferManager(false),
        mTimestampOffset(timestampOffset),
        mUseReadoutTime(false),
        mConsumerUsage(consumerUsage),
        mDropBuffers(false),
        mMirrorMode(mirrorMode),
        mDequeueBufferLatency(kDequeueLatencyBinSize),
        mIPCTransport(transport) {
    // Deferred consumer only support preview surface format now.
    if (format != HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
        ALOGE("%s: Deferred consumer only supports IMPLEMENTATION_DEFINED format now!",
                __FUNCTION__);
        mState = STATE_ERROR;
    }

    // Validation check for the consumer usage flag.
    if ((consumerUsage & GraphicBuffer::USAGE_HW_TEXTURE) == 0 &&
            (consumerUsage & GraphicBuffer::USAGE_HW_COMPOSER) == 0) {
        ALOGE("%s: Deferred consumer usage flag is illegal %" PRIu64 "!",
              __FUNCTION__, consumerUsage);
        mState = STATE_ERROR;
    }

    mConsumerName = String8("Deferred");
    bool needsReleaseNotify = setId > CAMERA3_STREAM_SET_ID_INVALID;
    mBufferProducerListener = new BufferProducerListener(this, needsReleaseNotify);
}

Camera3OutputStream::Camera3OutputStream(int id, camera_stream_type_t type,
                                         uint32_t width, uint32_t height,
                                         int format,
                                         android_dataspace dataSpace,
                                         camera_stream_rotation_t rotation,
                                         const String8& physicalCameraId,
                                         const std::unordered_set<int32_t> &sensorPixelModesUsed,
                                         IPCTransport transport,
                                         uint64_t consumerUsage, nsecs_t timestampOffset,
                                         int setId, bool isMultiResolution,
                                         int64_t dynamicRangeProfile, int64_t streamUseCase,
                                         bool deviceTimeBaseIsRealtime, int timestampBase,
                                         int mirrorMode) :
        Camera3IOStreamBase(id, type, width, height,
                            /*maxSize*/0,
                            format, dataSpace, rotation,
                            physicalCameraId, sensorPixelModesUsed, setId, isMultiResolution,
                            dynamicRangeProfile, streamUseCase, deviceTimeBaseIsRealtime,
                            timestampBase),
        mTransform(0),
        mTraceFirstBuffer(true),
        mUseBufferManager(false),
        mTimestampOffset(timestampOffset),
        mUseReadoutTime(false),
        mConsumerUsage(consumerUsage),
        mDropBuffers(false),
        mMirrorMode(mirrorMode),
        mDequeueBufferLatency(kDequeueLatencyBinSize),
        mIPCTransport(transport) {

    bool needsReleaseNotify = setId > CAMERA3_STREAM_SET_ID_INVALID;
    mBufferProducerListener = new BufferProducerListener(this, needsReleaseNotify);

    // Subclasses expected to initialize mConsumer themselves
}


Camera3OutputStream::~Camera3OutputStream() {
    disconnectLocked();
}

status_t Camera3OutputStream::getBufferLocked(camera_stream_buffer *buffer,
        const std::vector<size_t>&) {
    ATRACE_HFR_CALL();

    ANativeWindowBuffer* anb;
    int fenceFd = -1;

    status_t res;
    res = getBufferLockedCommon(&anb, &fenceFd);
    if (res != OK) {
        return res;
    }

    /**
     * FenceFD now owned by HAL except in case of error,
     * in which case we reassign it to acquire_fence
     */
    handoutBufferLocked(*buffer, &(anb->handle), /*acquireFence*/fenceFd,
                        /*releaseFence*/-1, CAMERA_BUFFER_STATUS_OK, /*output*/true);

    return OK;
}

status_t Camera3OutputStream::getBuffersLocked(std::vector<OutstandingBuffer>* outBuffers) {
    status_t res;

    if ((res = getBufferPreconditionCheckLocked()) != OK) {
        return res;
    }

    if (mUseBufferManager) {
        ALOGE("%s: stream %d is managed by buffer manager and does not support batch operation",
                __FUNCTION__, mId);
        return INVALID_OPERATION;
    }

    sp<Surface> consumer = mConsumer;
    /**
     * Release the lock briefly to avoid deadlock for below scenario:
     * Thread 1: StreamingProcessor::startStream -> Camera3Stream::isConfiguring().
     * This thread acquired StreamingProcessor lock and try to lock Camera3Stream lock.
     * Thread 2: Camera3Stream::returnBuffer->StreamingProcessor::onFrameAvailable().
     * This thread acquired Camera3Stream lock and bufferQueue lock, and try to lock
     * StreamingProcessor lock.
     * Thread 3: Camera3Stream::getBuffer(). This thread acquired Camera3Stream lock
     * and try to lock bufferQueue lock.
     * Then there is circular locking dependency.
     */
    mLock.unlock();

    size_t numBuffersRequested = outBuffers->size();
    std::vector<Surface::BatchBuffer> buffers(numBuffersRequested);

    nsecs_t dequeueStart = systemTime(SYSTEM_TIME_MONOTONIC);
    res = consumer->dequeueBuffers(&buffers);
    nsecs_t dequeueEnd = systemTime(SYSTEM_TIME_MONOTONIC);
    mDequeueBufferLatency.add(dequeueStart, dequeueEnd);

    mLock.lock();

    if (res != OK) {
        if (shouldLogError(res, mState)) {
            ALOGE("%s: Stream %d: Can't dequeue %zu output buffers: %s (%d)",
                    __FUNCTION__, mId, numBuffersRequested, strerror(-res), res);
        }
        checkRetAndSetAbandonedLocked(res);
        return res;
    }
    checkRemovedBuffersLocked();

    /**
     * FenceFD now owned by HAL except in case of error,
     * in which case we reassign it to acquire_fence
     */
    for (size_t i = 0; i < numBuffersRequested; i++) {
        handoutBufferLocked(*(outBuffers->at(i).outBuffer),
                &(buffers[i].buffer->handle), /*acquireFence*/buffers[i].fenceFd,
                /*releaseFence*/-1, CAMERA_BUFFER_STATUS_OK, /*output*/true);
    }
    return OK;
}

status_t Camera3OutputStream::queueBufferToConsumer(sp<ANativeWindow>& consumer,
            ANativeWindowBuffer* buffer, int anwReleaseFence,
            const std::vector<size_t>&) {
    return consumer->queueBuffer(consumer.get(), buffer, anwReleaseFence);
}

status_t Camera3OutputStream::returnBufferLocked(
        const camera_stream_buffer &buffer,
        nsecs_t timestamp, nsecs_t readoutTimestamp,
        int32_t transform, const std::vector<size_t>& surface_ids) {
    ATRACE_HFR_CALL();

    if (mHandoutTotalBufferCount == 1) {
        returnPrefetchedBuffersLocked();
    }

    status_t res = returnAnyBufferLocked(buffer, timestamp, readoutTimestamp,
                                         /*output*/true, transform, surface_ids);

    if (res != OK) {
        return res;
    }

    mLastTimestamp = timestamp;
    mFrameCount++;

    return OK;
}

status_t Camera3OutputStream::fixUpHidlJpegBlobHeader(ANativeWindowBuffer* anwBuffer, int fence) {
    // Lock the JPEG buffer for CPU read
    sp<GraphicBuffer> graphicBuffer = GraphicBuffer::from(anwBuffer);
    void* mapped = nullptr;
    base::unique_fd fenceFd(dup(fence));
    // Use USAGE_SW_WRITE_RARELY since we're going to re-write the CameraBlob
    // header.
    GraphicBufferLocker gbLocker(graphicBuffer);
    status_t res =
            gbLocker.lockAsync(
                    GraphicBuffer::USAGE_SW_READ_OFTEN | GraphicBuffer::USAGE_SW_WRITE_RARELY,
                    &mapped, fenceFd.release());
    if (res != OK) {
        ALOGE("%s: Failed to lock the buffer: %s (%d)", __FUNCTION__, strerror(-res), res);
        return res;
    }

    uint8_t *hidlHeaderStart =
            static_cast<uint8_t*>(mapped) + graphicBuffer->getWidth() - sizeof(camera_jpeg_blob_t);
    // Check that the jpeg buffer is big enough to contain HIDL camera blob
    if (hidlHeaderStart < static_cast<uint8_t *>(mapped)) {
        ALOGE("%s, jpeg buffer not large enough to fit HIDL camera blob %" PRIu32, __FUNCTION__,
                graphicBuffer->getWidth());
        return BAD_VALUE;
    }
    camera_jpeg_blob_t *hidlBlobHeader = reinterpret_cast<camera_jpeg_blob_t *>(hidlHeaderStart);

    // Check that the blob is indeed the jpeg blob id.
    if (hidlBlobHeader->jpeg_blob_id != CAMERA_JPEG_BLOB_ID) {
        ALOGE("%s, jpeg blob id %d is not correct", __FUNCTION__, hidlBlobHeader->jpeg_blob_id);
        return BAD_VALUE;
    }

    // Retrieve id and blob size
    CameraBlobId blobId = static_cast<CameraBlobId>(hidlBlobHeader->jpeg_blob_id);
    uint32_t blobSizeBytes = hidlBlobHeader->jpeg_size;

    if (blobSizeBytes > (graphicBuffer->getWidth() - sizeof(camera_jpeg_blob_t))) {
        ALOGE("%s, blobSize in HIDL jpeg blob : %d is corrupt, buffer size %" PRIu32, __FUNCTION__,
                  blobSizeBytes, graphicBuffer->getWidth());
    }

    uint8_t *aidlHeaderStart =
            static_cast<uint8_t*>(mapped) + graphicBuffer->getWidth() - sizeof(CameraBlob);

    // Check that the jpeg buffer is big enough to contain AIDL camera blob
    if (aidlHeaderStart < static_cast<uint8_t *>(mapped)) {
        ALOGE("%s, jpeg buffer not large enough to fit AIDL camera blob %" PRIu32, __FUNCTION__,
                graphicBuffer->getWidth());
        return BAD_VALUE;
    }

    if (static_cast<uint8_t*>(mapped) + blobSizeBytes > aidlHeaderStart) {
        ALOGE("%s, jpeg blob with size %d , buffer size %" PRIu32 " not large enough to fit"
                " AIDL camera blob without corrupting jpeg", __FUNCTION__, blobSizeBytes,
                graphicBuffer->getWidth());
        return BAD_VALUE;
    }

    // Fill in JPEG header
    CameraBlob aidlHeader = {
            .blobId = blobId,
            .blobSizeBytes = static_cast<int32_t>(blobSizeBytes)
    };
    memcpy(aidlHeaderStart, &aidlHeader, sizeof(CameraBlob));
    graphicBuffer->unlock();
    return OK;
}

status_t Camera3OutputStream::returnBufferCheckedLocked(
            const camera_stream_buffer &buffer,
            nsecs_t timestamp,
            nsecs_t readoutTimestamp,
            bool output,
            int32_t transform,
            const std::vector<size_t>& surface_ids,
            /*out*/
            sp<Fence> *releaseFenceOut) {

    (void)output;
    ALOG_ASSERT(output, "Expected output to be true");

    status_t res;

    // Fence management - always honor release fence from HAL
    sp<Fence> releaseFence = new Fence(buffer.release_fence);
    int anwReleaseFence = releaseFence->dup();

    /**
     * Release the lock briefly to avoid deadlock with
     * StreamingProcessor::startStream -> Camera3Stream::isConfiguring (this
     * thread will go into StreamingProcessor::onFrameAvailable) during
     * queueBuffer
     */
    sp<ANativeWindow> currentConsumer = mConsumer;
    StreamState state = mState;
    mLock.unlock();

    ANativeWindowBuffer *anwBuffer = container_of(buffer.buffer, ANativeWindowBuffer, handle);
    bool bufferDeferred = false;
    /**
     * Return buffer back to ANativeWindow
     */
    if (buffer.status == CAMERA_BUFFER_STATUS_ERROR || mDropBuffers || timestamp == 0) {
        // Cancel buffer
        if (mDropBuffers) {
            ALOGV("%s: Dropping a frame for stream %d.", __FUNCTION__, mId);
        } else if (buffer.status == CAMERA_BUFFER_STATUS_ERROR) {
            ALOGV("%s: A frame is dropped for stream %d due to buffer error.", __FUNCTION__, mId);
        } else {
            ALOGE("%s: Stream %d: timestamp shouldn't be 0", __FUNCTION__, mId);
        }

        res = currentConsumer->cancelBuffer(currentConsumer.get(),
                anwBuffer,
                anwReleaseFence);
        if (shouldLogError(res, state)) {
            ALOGE("%s: Stream %d: Error cancelling buffer to native window:"
                  " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
        }

        notifyBufferReleased(anwBuffer);
        if (mUseBufferManager) {
            // Return this buffer back to buffer manager.
            mBufferProducerListener->onBufferReleased();
        }
    } else {
        if (mTraceFirstBuffer && (stream_type == CAMERA_STREAM_OUTPUT)) {
            {
                char traceLog[48];
                snprintf(traceLog, sizeof(traceLog), "Stream %d: first full buffer\n", mId);
                ATRACE_NAME(traceLog);
            }
            mTraceFirstBuffer = false;
        }
        // Fix CameraBlob id type discrepancy between HIDL and AIDL, details : http://b/229688810
        if (getFormat() == HAL_PIXEL_FORMAT_BLOB && getDataSpace() == HAL_DATASPACE_V0_JFIF) {
            if (mIPCTransport == IPCTransport::HIDL) {
                fixUpHidlJpegBlobHeader(anwBuffer, anwReleaseFence);
            }
            // If this is a JPEG output, and image dump mask is set, save image to
            // disk.
            if (mImageDumpMask) {
                dumpImageToDisk(timestamp, anwBuffer, anwReleaseFence);
            }
        }

        nsecs_t captureTime = (mUseReadoutTime && readoutTimestamp != 0 ?
                readoutTimestamp : timestamp) - mTimestampOffset;
        if (mPreviewFrameSpacer != nullptr) {
            nsecs_t readoutTime = (readoutTimestamp != 0 ? readoutTimestamp : timestamp)
                    - mTimestampOffset;
            res = mPreviewFrameSpacer->queuePreviewBuffer(captureTime, readoutTime,
                    transform, anwBuffer, anwReleaseFence);
            if (res != OK) {
                ALOGE("%s: Stream %d: Error queuing buffer to preview buffer spacer: %s (%d)",
                        __FUNCTION__, mId, strerror(-res), res);
                return res;
            }
            bufferDeferred = true;
        } else {
            nsecs_t presentTime = mSyncToDisplay ?
                    syncTimestampToDisplayLocked(captureTime) : captureTime;

            setTransform(transform, true/*mayChangeMirror*/);
            res = native_window_set_buffers_timestamp(mConsumer.get(), presentTime);
            if (res != OK) {
                ALOGE("%s: Stream %d: Error setting timestamp: %s (%d)",
                      __FUNCTION__, mId, strerror(-res), res);
                return res;
            }

            queueHDRMetadata(anwBuffer->handle, currentConsumer, dynamic_range_profile);

            res = queueBufferToConsumer(currentConsumer, anwBuffer, anwReleaseFence, surface_ids);
            if (shouldLogError(res, state)) {
                ALOGE("%s: Stream %d: Error queueing buffer to native window:"
                      " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
            }
        }
    }
    mLock.lock();

    if (bufferDeferred) {
        mCachedOutputBufferCount++;
    }

    // Once a valid buffer has been returned to the queue, can no longer
    // dequeue all buffers for preallocation.
    if (buffer.status != CAMERA_BUFFER_STATUS_ERROR) {
        mStreamUnpreparable = true;
    }

    if (res != OK) {
        close(anwReleaseFence);
    }

    *releaseFenceOut = releaseFence;

    return res;
}

void Camera3OutputStream::dump(int fd, const Vector<String16> &args) const {
    (void) args;
    String8 lines;
    lines.appendFormat("    Stream[%d]: Output\n", mId);
    lines.appendFormat("      Consumer name: %s\n", mConsumerName.string());
    write(fd, lines.string(), lines.size());

    Camera3IOStreamBase::dump(fd, args);

    mDequeueBufferLatency.dump(fd,
        "      DequeueBuffer latency histogram:");
}

status_t Camera3OutputStream::setTransform(int transform, bool mayChangeMirror) {
    ATRACE_CALL();
    Mutex::Autolock l(mLock);
    if (mMirrorMode != OutputConfiguration::MIRROR_MODE_AUTO && mayChangeMirror) {
        // If the mirroring mode is not AUTO, do not allow transform update
        // which may change mirror.
        return OK;
    }

    return setTransformLocked(transform);
}

status_t Camera3OutputStream::setTransformLocked(int transform) {
    status_t res = OK;

    if (transform == -1) return res;

    if (mState == STATE_ERROR) {
        ALOGE("%s: Stream in error state", __FUNCTION__);
        return INVALID_OPERATION;
    }

    mTransform = transform;
    if (mState == STATE_CONFIGURED) {
        res = native_window_set_buffers_transform(mConsumer.get(),
                transform);
        if (res != OK) {
            ALOGE("%s: Unable to configure stream transform to %x: %s (%d)",
                    __FUNCTION__, transform, strerror(-res), res);
        }
    }
    return res;
}

status_t Camera3OutputStream::configureQueueLocked() {
    status_t res;

    mTraceFirstBuffer = true;
    if ((res = Camera3IOStreamBase::configureQueueLocked()) != OK) {
        return res;
    }

    if ((res = configureConsumerQueueLocked(true /*allowPreviewRespace*/)) != OK) {
        return res;
    }

    // Set dequeueBuffer/attachBuffer timeout if the consumer is not hw composer or hw texture.
    // We need skip these cases as timeout will disable the non-blocking (async) mode.
    if (!(isConsumedByHWComposer() || isConsumedByHWTexture())) {
        if (mUseBufferManager) {
            // When buffer manager is handling the buffer, we should have available buffers in
            // buffer queue before we calls into dequeueBuffer because buffer manager is tracking
            // free buffers.
            // There are however some consumer side feature (ImageReader::discardFreeBuffers) that
            // can discard free buffers without notifying buffer manager. We want the timeout to
            // happen immediately here so buffer manager can try to update its internal state and
            // try to allocate a buffer instead of waiting.
            mConsumer->setDequeueTimeout(0);
        } else {
            mConsumer->setDequeueTimeout(kDequeueBufferTimeout);
        }
    }

    return OK;
}

status_t Camera3OutputStream::configureConsumerQueueLocked(bool allowPreviewRespace) {
    status_t res;

    mTraceFirstBuffer = true;

    ALOG_ASSERT(mConsumer != 0, "mConsumer should never be NULL");

    // Configure consumer-side ANativeWindow interface. The listener may be used
    // to notify buffer manager (if it is used) of the returned buffers.
    res = mConsumer->connect(NATIVE_WINDOW_API_CAMERA,
            /*reportBufferRemoval*/true,
            /*listener*/mBufferProducerListener);
    if (res != OK) {
        ALOGE("%s: Unable to connect to native window for stream %d",
                __FUNCTION__, mId);
        return res;
    }

    mConsumerName = mConsumer->getConsumerName();

    res = native_window_set_usage(mConsumer.get(), mUsage);
    if (res != OK) {
        ALOGE("%s: Unable to configure usage %" PRIu64 " for stream %d",
                __FUNCTION__, mUsage, mId);
        return res;
    }

    res = native_window_set_scaling_mode(mConsumer.get(),
            NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW);
    if (res != OK) {
        ALOGE("%s: Unable to configure stream scaling: %s (%d)",
                __FUNCTION__, strerror(-res), res);
        return res;
    }

    if (mMaxSize == 0) {
        // For buffers of known size
        res = native_window_set_buffers_dimensions(mConsumer.get(),
                camera_stream::width, camera_stream::height);
    } else {
        // For buffers with bounded size
        res = native_window_set_buffers_dimensions(mConsumer.get(),
                mMaxSize, 1);
    }
    if (res != OK) {
        ALOGE("%s: Unable to configure stream buffer dimensions"
                " %d x %d (maxSize %zu) for stream %d",
                __FUNCTION__, camera_stream::width, camera_stream::height,
                mMaxSize, mId);
        return res;
    }
    res = native_window_set_buffers_format(mConsumer.get(),
            camera_stream::format);
    if (res != OK) {
        ALOGE("%s: Unable to configure stream buffer format %#x for stream %d",
                __FUNCTION__, camera_stream::format, mId);
        return res;
    }

    res = native_window_set_buffers_data_space(mConsumer.get(),
            camera_stream::data_space);
    if (res != OK) {
        ALOGE("%s: Unable to configure stream dataspace %#x for stream %d",
                __FUNCTION__, camera_stream::data_space, mId);
        return res;
    }

    int maxConsumerBuffers;
    res = static_cast<ANativeWindow*>(mConsumer.get())->query(
            mConsumer.get(),
            NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &maxConsumerBuffers);
    if (res != OK) {
        ALOGE("%s: Unable to query consumer undequeued"
                " buffer count for stream %d", __FUNCTION__, mId);
        return res;
    }

    ALOGV("%s: Consumer wants %d buffers, HAL wants %d", __FUNCTION__,
            maxConsumerBuffers, camera_stream::max_buffers);
    if (camera_stream::max_buffers == 0) {
        ALOGE("%s: Camera HAL requested max_buffer count: %d, requires at least 1",
                __FUNCTION__, camera_stream::max_buffers);
        return INVALID_OPERATION;
    }

    mTotalBufferCount = maxConsumerBuffers + camera_stream::max_buffers;

    int timestampBase = getTimestampBase();
    bool isDefaultTimeBase = (timestampBase ==
            OutputConfiguration::TIMESTAMP_BASE_DEFAULT);
    if (allowPreviewRespace)  {
        bool forceChoreographer = (timestampBase ==
                OutputConfiguration::TIMESTAMP_BASE_CHOREOGRAPHER_SYNCED);
        bool defaultToChoreographer = (isDefaultTimeBase &&
                isConsumedByHWComposer());
        bool defaultToSpacer = (isDefaultTimeBase &&
                isConsumedByHWTexture() &&
                !isConsumedByCPU() &&
                !isVideoStream());
        if (forceChoreographer || defaultToChoreographer) {
            mSyncToDisplay = true;
            // For choreographer synced stream, extra buffers aren't kept by
            // camera service. So no need to update mMaxCachedBufferCount.
            mTotalBufferCount += kDisplaySyncExtraBuffer;
        } else if (defaultToSpacer) {
            mPreviewFrameSpacer = new PreviewFrameSpacer(this, mConsumer);
            // For preview frame spacer, the extra buffer is kept by camera
            // service. So update mMaxCachedBufferCount.
            mMaxCachedBufferCount = 1;
            mTotalBufferCount += mMaxCachedBufferCount;
            res = mPreviewFrameSpacer->run(String8::format("PreviewSpacer-%d", mId).string());
            if (res != OK) {
                ALOGE("%s: Unable to start preview spacer", __FUNCTION__);
                return res;
            }
        }
    }
    mHandoutTotalBufferCount = 0;
    mFrameCount = 0;
    mLastTimestamp = 0;

    mUseReadoutTime =
            (timestampBase == OutputConfiguration::TIMESTAMP_BASE_READOUT_SENSOR || mSyncToDisplay);

    if (isDeviceTimeBaseRealtime()) {
        if (isDefaultTimeBase && !isConsumedByHWComposer() && !isVideoStream()) {
            // Default time base, but not hardware composer or video encoder
            mTimestampOffset = 0;
        } else if (timestampBase == OutputConfiguration::TIMESTAMP_BASE_REALTIME ||
                timestampBase == OutputConfiguration::TIMESTAMP_BASE_SENSOR ||
                timestampBase == OutputConfiguration::TIMESTAMP_BASE_READOUT_SENSOR) {
            mTimestampOffset = 0;
        }
        // If timestampBase is CHOREOGRAPHER SYNCED or MONOTONIC, leave
        // timestamp offset as bootTime - monotonicTime.
    } else {
        if (timestampBase == OutputConfiguration::TIMESTAMP_BASE_REALTIME) {
            // Reverse offset for monotonicTime -> bootTime
            mTimestampOffset = -mTimestampOffset;
        } else {
            // If timestampBase is DEFAULT, MONOTONIC, SENSOR, READOUT_SENSOR or
            // CHOREOGRAPHER_SYNCED, timestamp offset is 0.
            mTimestampOffset = 0;
        }
    }

    res = native_window_set_buffer_count(mConsumer.get(),
            mTotalBufferCount);
    if (res != OK) {
        ALOGE("%s: Unable to set buffer count for stream %d",
                __FUNCTION__, mId);
        return res;
    }

    res = native_window_set_buffers_transform(mConsumer.get(),
            mTransform);
    if (res != OK) {
        ALOGE("%s: Unable to configure stream transform to %x: %s (%d)",
                __FUNCTION__, mTransform, strerror(-res), res);
        return res;
    }

    /**
     * Camera3 Buffer manager is only supported by HAL3.3 onwards, as the older HALs requires
     * buffers to be statically allocated for internal static buffer registration, while the
     * buffers provided by buffer manager are really dynamically allocated. Camera3Device only
     * sets the mBufferManager if device version is > HAL3.2, which guarantees that the buffer
     * manager setup is skipped in below code. Note that HAL3.2 is also excluded here, as some
     * HAL3.2 devices may not support the dynamic buffer registeration.
     * Also Camera3BufferManager does not support display/texture streams as they have its own
     * buffer management logic.
     */
    if (mBufferManager != 0 && mSetId > CAMERA3_STREAM_SET_ID_INVALID &&
            !(isConsumedByHWComposer() || isConsumedByHWTexture())) {
        uint64_t consumerUsage = 0;
        getEndpointUsage(&consumerUsage);
        uint32_t width = (mMaxSize == 0) ? getWidth() : mMaxSize;
        uint32_t height = (mMaxSize == 0) ? getHeight() : 1;
        StreamInfo streamInfo(
                getId(), getStreamSetId(), width, height, getFormat(), getDataSpace(),
                mUsage | consumerUsage, mTotalBufferCount,
                /*isConfigured*/true, isMultiResolution());
        wp<Camera3OutputStream> weakThis(this);
        res = mBufferManager->registerStream(weakThis,
                streamInfo);
        if (res == OK) {
            // Disable buffer allocation for this BufferQueue, buffer manager will take over
            // the buffer allocation responsibility.
            mConsumer->getIGraphicBufferProducer()->allowAllocation(false);
            mUseBufferManager = true;
        } else {
            ALOGE("%s: Unable to register stream %d to camera3 buffer manager, "
                  "(error %d %s), fall back to BufferQueue for buffer management!",
                  __FUNCTION__, mId, res, strerror(-res));
        }
    }

    return OK;
}

status_t Camera3OutputStream::getBufferLockedCommon(ANativeWindowBuffer** anb, int* fenceFd) {
    ATRACE_HFR_CALL();
    status_t res;

    if ((res = getBufferPreconditionCheckLocked()) != OK) {
        return res;
    }

    bool gotBufferFromManager = false;

    if (mUseBufferManager) {
        sp<GraphicBuffer> gb;
        res = mBufferManager->getBufferForStream(getId(), getStreamSetId(),
                isMultiResolution(), &gb, fenceFd);
        if (res == OK) {
            // Attach this buffer to the bufferQueue: the buffer will be in dequeue state after a
            // successful return.
            *anb = gb.get();
            res = mConsumer->attachBuffer(*anb);
            if (shouldLogError(res, mState)) {
                ALOGE("%s: Stream %d: Can't attach the output buffer to this surface: %s (%d)",
                        __FUNCTION__, mId, strerror(-res), res);
            }
            if (res != OK) {
                checkRetAndSetAbandonedLocked(res);
                return res;
            }
            gotBufferFromManager = true;
            ALOGV("Stream %d: Attached new buffer", getId());
        } else if (res == ALREADY_EXISTS) {
            // Have sufficient free buffers already attached, can just
            // dequeue from buffer queue
            ALOGV("Stream %d: Reusing attached buffer", getId());
            gotBufferFromManager = false;
        } else if (res != OK) {
            ALOGE("%s: Stream %d: Can't get next output buffer from buffer manager: %s (%d)",
                    __FUNCTION__, mId, strerror(-res), res);
            return res;
        }
    }
    if (!gotBufferFromManager) {
        /**
         * Release the lock briefly to avoid deadlock for below scenario:
         * Thread 1: StreamingProcessor::startStream -> Camera3Stream::isConfiguring().
         * This thread acquired StreamingProcessor lock and try to lock Camera3Stream lock.
         * Thread 2: Camera3Stream::returnBuffer->StreamingProcessor::onFrameAvailable().
         * This thread acquired Camera3Stream lock and bufferQueue lock, and try to lock
         * StreamingProcessor lock.
         * Thread 3: Camera3Stream::getBuffer(). This thread acquired Camera3Stream lock
         * and try to lock bufferQueue lock.
         * Then there is circular locking dependency.
         */
        sp<Surface> consumer = mConsumer;
        size_t remainingBuffers = (mState == STATE_PREPARING ? mTotalBufferCount :
                                   camera_stream::max_buffers) - mHandoutTotalBufferCount;
        mLock.unlock();

        nsecs_t dequeueStart = systemTime(SYSTEM_TIME_MONOTONIC);

        size_t batchSize = mBatchSize.load();
        if (batchSize == 1) {
            sp<ANativeWindow> anw = consumer;
            res = anw->dequeueBuffer(anw.get(), anb, fenceFd);
        } else {
            std::unique_lock<std::mutex> batchLock(mBatchLock);
            res = OK;
            if (mBatchedBuffers.size() == 0) {
                if (remainingBuffers == 0) {
                    ALOGE("%s: cannot get buffer while all buffers are handed out", __FUNCTION__);
                    return INVALID_OPERATION;
                }
                if (batchSize > remainingBuffers) {
                    batchSize = remainingBuffers;
                }
                batchLock.unlock();
                // Refill batched buffers
                std::vector<Surface::BatchBuffer> batchedBuffers;
                batchedBuffers.resize(batchSize);
                res = consumer->dequeueBuffers(&batchedBuffers);
                batchLock.lock();
                if (res != OK) {
                    ALOGE("%s: batch dequeueBuffers call failed! %s (%d)",
                            __FUNCTION__, strerror(-res), res);
                } else {
                    mBatchedBuffers = std::move(batchedBuffers);
                }
            }

            if (res == OK) {
                // Dispatch batch buffers
                *anb = mBatchedBuffers.back().buffer;
                *fenceFd = mBatchedBuffers.back().fenceFd;
                mBatchedBuffers.pop_back();
            }
        }

        nsecs_t dequeueEnd = systemTime(SYSTEM_TIME_MONOTONIC);
        mDequeueBufferLatency.add(dequeueStart, dequeueEnd);

        mLock.lock();

        if (mUseBufferManager && res == TIMED_OUT) {
            checkRemovedBuffersLocked();

            sp<GraphicBuffer> gb;
            res = mBufferManager->getBufferForStream(
                    getId(), getStreamSetId(), isMultiResolution(),
                    &gb, fenceFd, /*noFreeBuffer*/true);

            if (res == OK) {
                // Attach this buffer to the bufferQueue: the buffer will be in dequeue state after
                // a successful return.
                *anb = gb.get();
                res = mConsumer->attachBuffer(*anb);
                gotBufferFromManager = true;
                ALOGV("Stream %d: Attached new buffer", getId());

                if (res != OK) {
                    if (shouldLogError(res, mState)) {
                        ALOGE("%s: Stream %d: Can't attach the output buffer to this surface:"
                                " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
                    }
                    checkRetAndSetAbandonedLocked(res);
                    return res;
                }
            } else {
                ALOGE("%s: Stream %d: Can't get next output buffer from buffer manager:"
                        " %s (%d)", __FUNCTION__, mId, strerror(-res), res);
                return res;
            }
        } else if (res != OK) {
            if (shouldLogError(res, mState)) {
                ALOGE("%s: Stream %d: Can't dequeue next output buffer: %s (%d)",
                        __FUNCTION__, mId, strerror(-res), res);
            }
            checkRetAndSetAbandonedLocked(res);
            return res;
        }
    }

    if (res == OK) {
        checkRemovedBuffersLocked();
    }

    return res;
}

void Camera3OutputStream::checkRemovedBuffersLocked(bool notifyBufferManager) {
    std::vector<sp<GraphicBuffer>> removedBuffers;
    status_t res = mConsumer->getAndFlushRemovedBuffers(&removedBuffers);
    if (res == OK) {
        onBuffersRemovedLocked(removedBuffers);

        if (notifyBufferManager && mUseBufferManager && removedBuffers.size() > 0) {
            mBufferManager->onBuffersRemoved(getId(), getStreamSetId(), isMultiResolution(),
                    removedBuffers.size());
        }
    }
}

void Camera3OutputStream::checkRetAndSetAbandonedLocked(status_t res) {
    // Only transition to STATE_ABANDONED from STATE_CONFIGURED. (If it is
    // STATE_PREPARING, let prepareNextBuffer handle the error.)
    if ((res == NO_INIT || res == DEAD_OBJECT) && mState == STATE_CONFIGURED) {
        mState = STATE_ABANDONED;
    }
}

bool Camera3OutputStream::shouldLogError(status_t res, StreamState state) {
    if (res == OK) {
        return false;
    }
    if ((res == DEAD_OBJECT || res == NO_INIT) && state == STATE_ABANDONED) {
        return false;
    }
    return true;
}

void Camera3OutputStream::onCachedBufferQueued() {
    Mutex::Autolock l(mLock);
    mCachedOutputBufferCount--;
    // Signal whoever is waiting for the buffer to be returned to the buffer
    // queue.
    mOutputBufferReturnedSignal.signal();
}

status_t Camera3OutputStream::disconnectLocked() {
    status_t res;

    if ((res = Camera3IOStreamBase::disconnectLocked()) != OK) {
        return res;
    }

    // Stream configuration was not finished (can only be in STATE_IN_CONFIG or STATE_CONSTRUCTED
    // state), don't need change the stream state, return OK.
    if (mConsumer == nullptr) {
        return OK;