[libcamera-devel,v3,1/2] android: CameraDevice: Fix Camera3RequestDescriptor leakage
diff mbox series

Message ID 20210329061119.135513-2-hiroh@chromium.org
State Superseded
Headers show
Series
  • Fix Camera3RequestDescriptor leakage
Related show

Commit Message

Hirokazu Honda March 29, 2021, 6:11 a.m. UTC 
CameraDevice creates Camera3RequestDescriptor in
processCaptureRequest() and disallocates in requestComplete().
Camera3RequestDescriptor can never be destroyed if
requestComplete() is never called. This avoid the memory
leakage by storing them in map CameraRequestDescriptor.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
---
 src/android/camera_device.cpp | 67 +++++++++++++++++++----------------
 src/android/camera_device.h   |  8 +++--
 src/android/camera_worker.cpp |  4 +--
 src/android/camera_worker.h   |  2 +-
 4 files changed, 45 insertions(+), 36 deletions(-)

--
2.31.0.291.g576ba9dcdaf-goog

Comments

Jacopo Mondi March 29, 2021, 9:16 a.m. UTC | #1 
Hi Hiro,

On Mon, Mar 29, 2021 at 03:11:18PM +0900, Hirokazu Honda wrote:
> CameraDevice creates Camera3RequestDescriptor in
> processCaptureRequest() and disallocates in requestComplete().
> Camera3RequestDescriptor can never be destroyed if
> requestComplete() is never called. This avoid the memory
> leakage by storing them in map CameraRequestDescriptor.
>
> Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
> ---
>  src/android/camera_device.cpp | 67 +++++++++++++++++++----------------
>  src/android/camera_device.h   |  8 +++--
>  src/android/camera_worker.cpp |  4 +--
>  src/android/camera_worker.h   |  2 +-
>  4 files changed, 45 insertions(+), 36 deletions(-)
>
> diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
> index ae693664..02d3bfb2 100644
> --- a/src/android/camera_device.cpp
> +++ b/src/android/camera_device.cpp
> @@ -287,15 +287,17 @@ CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor(
>
>  	/*
>  	 * Create the libcamera::Request unique_ptr<> to tie its lifetime
> -	 * to the descriptor's one. Set the descriptor's address as the
> -	 * request's cookie to retrieve it at completion time.
> +	 * to the descriptor's one.
>  	 */
> -	request_ = std::make_unique<CaptureRequest>(camera,
> -						    reinterpret_cast<uint64_t>(this));
> +	request_ = std::make_unique<CaptureRequest>(camera);
>  }
>
> +CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor() = default;
>  CameraDevice::Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;
>
> +CameraDevice::Camera3RequestDescriptor &
> +CameraDevice::Camera3RequestDescriptor::operator=(Camera3RequestDescriptor &&) = default;
> +

Nit: I would initialize these with default in the header.

>  /*
>   * \class CameraDevice
>   *
> @@ -1811,8 +1813,8 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
>  	 * The descriptor and the associated memory reserved here are freed
>  	 * at request complete time.
>  	 */
> -	Camera3RequestDescriptor *descriptor =
> -		new Camera3RequestDescriptor(camera_.get(), camera3Request);
> +	Camera3RequestDescriptor descriptor(camera_.get(), camera3Request);
> +
>  	/*
>  	 * \todo The Android request model is incremental, settings passed in
>  	 * previous requests are to be effective until overridden explicitly in
> @@ -1822,12 +1824,12 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
>  	if (camera3Request->settings)
>  		lastSettings_ = camera3Request->settings;
>  	else
> -		descriptor->settings_ = lastSettings_;
> +		descriptor.settings_ = lastSettings_;
>
> -	LOG(HAL, Debug) << "Queueing request " << descriptor->request_->cookie()
> -			<< " with " << descriptor->buffers_.size() << " streams";
> -	for (unsigned int i = 0; i < descriptor->buffers_.size(); ++i) {
> -		const camera3_stream_buffer_t &camera3Buffer = descriptor->buffers_[i];
> +	LOG(HAL, Debug) << "Queueing request " << descriptor.request_->cookie()
> +			<< " with " << descriptor.buffers_.size() << " streams";
> +	for (unsigned int i = 0; i < descriptor.buffers_.size(); ++i) {
> +		const camera3_stream_buffer_t &camera3Buffer = descriptor.buffers_[i];
>  		camera3_stream *camera3Stream = camera3Buffer.stream;
>  		CameraStream *cameraStream = static_cast<CameraStream *>(camera3Stream->priv);
>
> @@ -1860,7 +1862,7 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
>  			 * lifetime management only.
>  			 */
>  			buffer = createFrameBuffer(*camera3Buffer.buffer);
> -			descriptor->frameBuffers_.emplace_back(buffer);
> +			descriptor.frameBuffers_.emplace_back(buffer);
>  			LOG(HAL, Debug) << ss.str() << " (direct)";
>  			break;
>
> @@ -1879,11 +1881,10 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
>
>  		if (!buffer) {
>  			LOG(HAL, Error) << "Failed to create buffer";
> -			delete descriptor;
>  			return -ENOMEM;
>  		}
>
> -		descriptor->request_->addBuffer(cameraStream->stream(), buffer,
> +		descriptor.request_->addBuffer(cameraStream->stream(), buffer,
>  						camera3Buffer.acquire_fence);
>  	}
>
> @@ -1891,11 +1892,12 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
>  	 * Translate controls from Android to libcamera and queue the request
>  	 * to the CameraWorker thread.
>  	 */
> -	int ret = processControls(descriptor);
> +	int ret = processControls(&descriptor);
>  	if (ret)
>  		return ret;
>
> -	worker_.queueRequest(descriptor->request_.get());
> +	worker_.queueRequest(descriptor.request_.get());
> +	descriptors_[descriptor.request_->cookie()] = std::move(descriptor);
>
>  	return 0;
>  }
> @@ -1905,8 +1907,13 @@ void CameraDevice::requestComplete(Request *request)
>  	const Request::BufferMap &buffers = request->buffers();
>  	camera3_buffer_status status = CAMERA3_BUFFER_STATUS_OK;
>  	std::unique_ptr<CameraMetadata> resultMetadata;
> -	Camera3RequestDescriptor *descriptor =
> -		reinterpret_cast<Camera3RequestDescriptor *>(request->cookie());
> +	auto node = descriptors_.extract(request->cookie());
> +	if (node.empty()) {
> +		LOG(HAL, Error) << "Unknown request: " << request->cookie();

Is this worth a 'Fatal' error as this condition should only be
triggered by a development error, or do you think it could happen at
run-time ?

> +		status = CAMERA3_BUFFER_STATUS_ERROR;
> +		return;
> +	}
> +	Camera3RequestDescriptor &descriptor = node.mapped();
>
>  	if (request->status() != Request::RequestComplete) {
>  		LOG(HAL, Error) << "Request not successfully completed: "
> @@ -1915,7 +1922,7 @@ void CameraDevice::requestComplete(Request *request)
>  	}
>
>  	LOG(HAL, Debug) << "Request " << request->cookie() << " completed with "
> -			<< descriptor->buffers_.size() << " streams";
> +			<< descriptor.buffers_.size() << " streams";
>
>  	/*
>  	 * \todo The timestamp used for the metadata is currently always taken
> @@ -1924,10 +1931,10 @@ void CameraDevice::requestComplete(Request *request)
>  	 * pipeline handlers) timestamp in the Request itself.
>  	 */
>  	uint64_t timestamp = buffers.begin()->second->metadata().timestamp;
> -	resultMetadata = getResultMetadata(*descriptor, timestamp);
> +	resultMetadata = getResultMetadata(descriptor, timestamp);
>
>  	/* Handle any JPEG compression. */
> -	for (camera3_stream_buffer_t &buffer : descriptor->buffers_) {
> +	for (camera3_stream_buffer_t &buffer : descriptor.buffers_) {
>  		CameraStream *cameraStream =
>  			static_cast<CameraStream *>(buffer.stream->priv);
>
> @@ -1942,7 +1949,7 @@ void CameraDevice::requestComplete(Request *request)
>
>  		int ret = cameraStream->process(*src,
>  						*buffer.buffer,
> -						descriptor->settings_,
> +						descriptor.settings_,
>  						resultMetadata.get());
>  		if (ret) {
>  			status = CAMERA3_BUFFER_STATUS_ERROR;
> @@ -1959,17 +1966,17 @@ void CameraDevice::requestComplete(Request *request)
>
>  	/* Prepare to call back the Android camera stack. */
>  	camera3_capture_result_t captureResult = {};
> -	captureResult.frame_number = descriptor->frameNumber_;
> -	captureResult.num_output_buffers = descriptor->buffers_.size();
> -	for (camera3_stream_buffer_t &buffer : descriptor->buffers_) {
> +	captureResult.frame_number = descriptor.frameNumber_;
> +	captureResult.num_output_buffers = descriptor.buffers_.size();
> +	for (camera3_stream_buffer_t &buffer : descriptor.buffers_) {
>  		buffer.acquire_fence = -1;
>  		buffer.release_fence = -1;
>  		buffer.status = status;
>  	}
> -	captureResult.output_buffers = descriptor->buffers_.data();
> +	captureResult.output_buffers = descriptor.buffers_.data();
>
>  	if (status == CAMERA3_BUFFER_STATUS_OK) {
> -		notifyShutter(descriptor->frameNumber_, timestamp);
> +		notifyShutter(descriptor.frameNumber_, timestamp);
>
>  		captureResult.partial_result = 1;
>  		captureResult.result = resultMetadata->get();
> @@ -1982,13 +1989,11 @@ void CameraDevice::requestComplete(Request *request)
>  		 * is here signalled. Make sure the error path plays well with
>  		 * the camera stack state machine.
>  		 */
> -		notifyError(descriptor->frameNumber_,
> -			    descriptor->buffers_[0].stream);
> +		notifyError(descriptor.frameNumber_,
> +			    descriptor.buffers_[0].stream);
>  	}
>
>  	callbacks_->process_capture_result(callbacks_, &captureResult);
> -
> -	delete descriptor;
>  }
>
>  std::string CameraDevice::logPrefix() const
> diff --git a/src/android/camera_device.h b/src/android/camera_device.h
> index 11bdfec8..5a2d22d6 100644
> --- a/src/android/camera_device.h
> +++ b/src/android/camera_device.h
> @@ -69,11 +69,13 @@ private:
>  	CameraDevice(unsigned int id, std::shared_ptr<libcamera::Camera> camera);
>
>  	struct Camera3RequestDescriptor {
> +		Camera3RequestDescriptor();
> +		~Camera3RequestDescriptor();
>  		Camera3RequestDescriptor(libcamera::Camera *camera,
>  					 const camera3_capture_request_t *camera3Request);
> -		~Camera3RequestDescriptor();
> +		Camera3RequestDescriptor &operator=(Camera3RequestDescriptor &&);
>
> -		uint32_t frameNumber_;
> +		uint32_t frameNumber_ = 0;

Unrelated. Or do you need this ? Isn't frameNumber initialized with
the value in camera3_capture_request_t ?

>  		std::vector<camera3_stream_buffer_t> buffers_;
>  		std::vector<std::unique_ptr<libcamera::FrameBuffer>> frameBuffers_;
>  		CameraMetadata settings_;
> @@ -122,6 +124,8 @@ private:
>  	std::map<int, libcamera::PixelFormat> formatsMap_;
>  	std::vector<CameraStream> streams_;
>
> +	std::map<uint64_t, Camera3RequestDescriptor> descriptors_;
> +
>  	std::string maker_;
>  	std::string model_;
>
> diff --git a/src/android/camera_worker.cpp b/src/android/camera_worker.cpp
> index df436460..300ddde0 100644
> --- a/src/android/camera_worker.cpp
> +++ b/src/android/camera_worker.cpp
> @@ -26,10 +26,10 @@ LOG_DECLARE_CATEGORY(HAL)
>   * by the CameraWorker which queues it to the libcamera::Camera after handling
>   * fences.
>   */
> -CaptureRequest::CaptureRequest(libcamera::Camera *camera, uint64_t cookie)
> +CaptureRequest::CaptureRequest(libcamera::Camera *camera)
>  	: camera_(camera)
>  {
> -	request_ = camera_->createRequest(cookie);
> +	request_ = camera_->createRequest(reinterpret_cast<uint64_t>(this));
>  }
>
>  void CaptureRequest::addBuffer(Stream *stream, FrameBuffer *buffer, int fence)
> diff --git a/src/android/camera_worker.h b/src/android/camera_worker.h
> index d7060576..64b1658b 100644
> --- a/src/android/camera_worker.h
> +++ b/src/android/camera_worker.h
> @@ -22,7 +22,7 @@ class CameraDevice;
>  class CaptureRequest
>  {
>  public:
> -	CaptureRequest(libcamera::Camera *camera, uint64_t cookie);
> +	CaptureRequest(libcamera::Camera *camera);
>
>  	const std::vector<int> &fences() const { return acquireFences_; }
>  	libcamera::ControlList &controls() { return request_->controls(); }
> --
> 2.31.0.291.g576ba9dcdaf-goog
> _______________________________________________
> libcamera-devel mailing list
> libcamera-devel@lists.libcamera.org
> https://lists.libcamera.org/listinfo/libcamera-devel
Hirokazu Honda March 30, 2021, 5:30 a.m. UTC | #2 
Hi Jacopo, thanks for reviewing.

On Mon, Mar 29, 2021 at 6:16 PM Jacopo Mondi <jacopo@jmondi.org> wrote:
>
> Hi Hiro,
>
> On Mon, Mar 29, 2021 at 03:11:18PM +0900, Hirokazu Honda wrote:
> > CameraDevice creates Camera3RequestDescriptor in
> > processCaptureRequest() and disallocates in requestComplete().
> > Camera3RequestDescriptor can never be destroyed if
> > requestComplete() is never called. This avoid the memory
> > leakage by storing them in map CameraRequestDescriptor.
> >
> > Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
> > ---
> >  src/android/camera_device.cpp | 67 +++++++++++++++++++----------------
> >  src/android/camera_device.h   |  8 +++--
> >  src/android/camera_worker.cpp |  4 +--
> >  src/android/camera_worker.h   |  2 +-
> >  4 files changed, 45 insertions(+), 36 deletions(-)
> >
> > diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
> > index ae693664..02d3bfb2 100644
> > --- a/src/android/camera_device.cpp
> > +++ b/src/android/camera_device.cpp
> > @@ -287,15 +287,17 @@ CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor(
> >
> >       /*
> >        * Create the libcamera::Request unique_ptr<> to tie its lifetime
> > -      * to the descriptor's one. Set the descriptor's address as the
> > -      * request's cookie to retrieve it at completion time.
> > +      * to the descriptor's one.
> >        */
> > -     request_ = std::make_unique<CaptureRequest>(camera,
> > -                                                 reinterpret_cast<uint64_t>(this));
> > +     request_ = std::make_unique<CaptureRequest>(camera);
> >  }
> >
> > +CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor() = default;
> >  CameraDevice::Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;
> >
> > +CameraDevice::Camera3RequestDescriptor &
> > +CameraDevice::Camera3RequestDescriptor::operator=(Camera3RequestDescriptor &&) = default;
> > +
>
> Nit: I would initialize these with default in the header.
>
> >  /*
> >   * \class CameraDevice
> >   *
> > @@ -1811,8 +1813,8 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
> >        * The descriptor and the associated memory reserved here are freed
> >        * at request complete time.
> >        */
> > -     Camera3RequestDescriptor *descriptor =
> > -             new Camera3RequestDescriptor(camera_.get(), camera3Request);
> > +     Camera3RequestDescriptor descriptor(camera_.get(), camera3Request);
> > +
> >       /*
> >        * \todo The Android request model is incremental, settings passed in
> >        * previous requests are to be effective until overridden explicitly in
> > @@ -1822,12 +1824,12 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
> >       if (camera3Request->settings)
> >               lastSettings_ = camera3Request->settings;
> >       else
> > -             descriptor->settings_ = lastSettings_;
> > +             descriptor.settings_ = lastSettings_;
> >
> > -     LOG(HAL, Debug) << "Queueing request " << descriptor->request_->cookie()
> > -                     << " with " << descriptor->buffers_.size() << " streams";
> > -     for (unsigned int i = 0; i < descriptor->buffers_.size(); ++i) {
> > -             const camera3_stream_buffer_t &camera3Buffer = descriptor->buffers_[i];
> > +     LOG(HAL, Debug) << "Queueing request " << descriptor.request_->cookie()
> > +                     << " with " << descriptor.buffers_.size() << " streams";
> > +     for (unsigned int i = 0; i < descriptor.buffers_.size(); ++i) {
> > +             const camera3_stream_buffer_t &camera3Buffer = descriptor.buffers_[i];
> >               camera3_stream *camera3Stream = camera3Buffer.stream;
> >               CameraStream *cameraStream = static_cast<CameraStream *>(camera3Stream->priv);
> >
> > @@ -1860,7 +1862,7 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
> >                        * lifetime management only.
> >                        */
> >                       buffer = createFrameBuffer(*camera3Buffer.buffer);
> > -                     descriptor->frameBuffers_.emplace_back(buffer);
> > +                     descriptor.frameBuffers_.emplace_back(buffer);
> >                       LOG(HAL, Debug) << ss.str() << " (direct)";
> >                       break;
> >
> > @@ -1879,11 +1881,10 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
> >
> >               if (!buffer) {
> >                       LOG(HAL, Error) << "Failed to create buffer";
> > -                     delete descriptor;
> >                       return -ENOMEM;
> >               }
> >
> > -             descriptor->request_->addBuffer(cameraStream->stream(), buffer,
> > +             descriptor.request_->addBuffer(cameraStream->stream(), buffer,
> >                                               camera3Buffer.acquire_fence);
> >       }
> >
> > @@ -1891,11 +1892,12 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
> >        * Translate controls from Android to libcamera and queue the request
> >        * to the CameraWorker thread.
> >        */
> > -     int ret = processControls(descriptor);
> > +     int ret = processControls(&descriptor);
> >       if (ret)
> >               return ret;
> >
> > -     worker_.queueRequest(descriptor->request_.get());
> > +     worker_.queueRequest(descriptor.request_.get());
> > +     descriptors_[descriptor.request_->cookie()] = std::move(descriptor);
> >
> >       return 0;
> >  }
> > @@ -1905,8 +1907,13 @@ void CameraDevice::requestComplete(Request *request)
> >       const Request::BufferMap &buffers = request->buffers();
> >       camera3_buffer_status status = CAMERA3_BUFFER_STATUS_OK;
> >       std::unique_ptr<CameraMetadata> resultMetadata;
> > -     Camera3RequestDescriptor *descriptor =
> > -             reinterpret_cast<Camera3RequestDescriptor *>(request->cookie());
> > +     auto node = descriptors_.extract(request->cookie());
> > +     if (node.empty()) {
> > +             LOG(HAL, Error) << "Unknown request: " << request->cookie();
>
> Is this worth a 'Fatal' error as this condition should only be
> triggered by a development error, or do you think it could happen at
> run-time ?
>

Right, this should not happen unless a development error.
Changed to Fatal.


> > +             status = CAMERA3_BUFFER_STATUS_ERROR;
> > +             return;
> > +     }
> > +     Camera3RequestDescriptor &descriptor = node.mapped();
> >
> >       if (request->status() != Request::RequestComplete) {
> >               LOG(HAL, Error) << "Request not successfully completed: "
> > @@ -1915,7 +1922,7 @@ void CameraDevice::requestComplete(Request *request)
> >       }
> >
> >       LOG(HAL, Debug) << "Request " << request->cookie() << " completed with "
> > -                     << descriptor->buffers_.size() << " streams";
> > +                     << descriptor.buffers_.size() << " streams";
> >
> >       /*
> >        * \todo The timestamp used for the metadata is currently always taken
> > @@ -1924,10 +1931,10 @@ void CameraDevice::requestComplete(Request *request)
> >        * pipeline handlers) timestamp in the Request itself.
> >        */
> >       uint64_t timestamp = buffers.begin()->second->metadata().timestamp;
> > -     resultMetadata = getResultMetadata(*descriptor, timestamp);
> > +     resultMetadata = getResultMetadata(descriptor, timestamp);
> >
> >       /* Handle any JPEG compression. */
> > -     for (camera3_stream_buffer_t &buffer : descriptor->buffers_) {
> > +     for (camera3_stream_buffer_t &buffer : descriptor.buffers_) {
> >               CameraStream *cameraStream =
> >                       static_cast<CameraStream *>(buffer.stream->priv);
> >
> > @@ -1942,7 +1949,7 @@ void CameraDevice::requestComplete(Request *request)
> >
> >               int ret = cameraStream->process(*src,
> >                                               *buffer.buffer,
> > -                                             descriptor->settings_,
> > +                                             descriptor.settings_,
> >                                               resultMetadata.get());
> >               if (ret) {
> >                       status = CAMERA3_BUFFER_STATUS_ERROR;
> > @@ -1959,17 +1966,17 @@ void CameraDevice::requestComplete(Request *request)
> >
> >       /* Prepare to call back the Android camera stack. */
> >       camera3_capture_result_t captureResult = {};
> > -     captureResult.frame_number = descriptor->frameNumber_;
> > -     captureResult.num_output_buffers = descriptor->buffers_.size();
> > -     for (camera3_stream_buffer_t &buffer : descriptor->buffers_) {
> > +     captureResult.frame_number = descriptor.frameNumber_;
> > +     captureResult.num_output_buffers = descriptor.buffers_.size();
> > +     for (camera3_stream_buffer_t &buffer : descriptor.buffers_) {
> >               buffer.acquire_fence = -1;
> >               buffer.release_fence = -1;
> >               buffer.status = status;
> >       }
> > -     captureResult.output_buffers = descriptor->buffers_.data();
> > +     captureResult.output_buffers = descriptor.buffers_.data();
> >
> >       if (status == CAMERA3_BUFFER_STATUS_OK) {
> > -             notifyShutter(descriptor->frameNumber_, timestamp);
> > +             notifyShutter(descriptor.frameNumber_, timestamp);
> >
> >               captureResult.partial_result = 1;
> >               captureResult.result = resultMetadata->get();
> > @@ -1982,13 +1989,11 @@ void CameraDevice::requestComplete(Request *request)
> >                * is here signalled. Make sure the error path plays well with
> >                * the camera stack state machine.
> >                */
> > -             notifyError(descriptor->frameNumber_,
> > -                         descriptor->buffers_[0].stream);
> > +             notifyError(descriptor.frameNumber_,
> > +                         descriptor.buffers_[0].stream);
> >       }
> >
> >       callbacks_->process_capture_result(callbacks_, &captureResult);
> > -
> > -     delete descriptor;
> >  }
> >
> >  std::string CameraDevice::logPrefix() const
> > diff --git a/src/android/camera_device.h b/src/android/camera_device.h
> > index 11bdfec8..5a2d22d6 100644
> > --- a/src/android/camera_device.h
> > +++ b/src/android/camera_device.h
> > @@ -69,11 +69,13 @@ private:
> >       CameraDevice(unsigned int id, std::shared_ptr<libcamera::Camera> camera);
> >
> >       struct Camera3RequestDescriptor {
> > +             Camera3RequestDescriptor();
> > +             ~Camera3RequestDescriptor();
> >               Camera3RequestDescriptor(libcamera::Camera *camera,
> >                                        const camera3_capture_request_t *camera3Request);
> > -             ~Camera3RequestDescriptor();
> > +             Camera3RequestDescriptor &operator=(Camera3RequestDescriptor &&);
> >
> > -             uint32_t frameNumber_;
> > +             uint32_t frameNumber_ = 0;
>
> Unrelated. Or do you need this ? Isn't frameNumber initialized with
> the value in camera3_capture_request_t ?
>

Since I have to introduce a default constructor sadly due to std::map,
I would like to initialize this to 0 for default constructor, although
it shall never be called by a user.

-Hiro

> >               std::vector<camera3_stream_buffer_t> buffers_;
> >               std::vector<std::unique_ptr<libcamera::FrameBuffer>> frameBuffers_;
> >               CameraMetadata settings_;
> > @@ -122,6 +124,8 @@ private:
> >       std::map<int, libcamera::PixelFormat> formatsMap_;
> >       std::vector<CameraStream> streams_;
> >
> > +     std::map<uint64_t, Camera3RequestDescriptor> descriptors_;
> > +
> >       std::string maker_;
> >       std::string model_;
> >
> > diff --git a/src/android/camera_worker.cpp b/src/android/camera_worker.cpp
> > index df436460..300ddde0 100644
> > --- a/src/android/camera_worker.cpp
> > +++ b/src/android/camera_worker.cpp
> > @@ -26,10 +26,10 @@ LOG_DECLARE_CATEGORY(HAL)
> >   * by the CameraWorker which queues it to the libcamera::Camera after handling
> >   * fences.
> >   */
> > -CaptureRequest::CaptureRequest(libcamera::Camera *camera, uint64_t cookie)
> > +CaptureRequest::CaptureRequest(libcamera::Camera *camera)
> >       : camera_(camera)
> >  {
> > -     request_ = camera_->createRequest(cookie);
> > +     request_ = camera_->createRequest(reinterpret_cast<uint64_t>(this));
> >  }
> >
> >  void CaptureRequest::addBuffer(Stream *stream, FrameBuffer *buffer, int fence)
> > diff --git a/src/android/camera_worker.h b/src/android/camera_worker.h
> > index d7060576..64b1658b 100644
> > --- a/src/android/camera_worker.h
> > +++ b/src/android/camera_worker.h
> > @@ -22,7 +22,7 @@ class CameraDevice;
> >  class CaptureRequest
> >  {
> >  public:
> > -     CaptureRequest(libcamera::Camera *camera, uint64_t cookie);
> > +     CaptureRequest(libcamera::Camera *camera);
> >
> >       const std::vector<int> &fences() const { return acquireFences_; }
> >       libcamera::ControlList &controls() { return request_->controls(); }
> > --
> > 2.31.0.291.g576ba9dcdaf-goog
> > _______________________________________________
> > libcamera-devel mailing list
> > libcamera-devel@lists.libcamera.org
> > https://lists.libcamera.org/listinfo/libcamera-devel

Patch
diff mbox series 

diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index ae693664..02d3bfb2 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -287,15 +287,17 @@  CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor(

 	/*
 	 * Create the libcamera::Request unique_ptr<> to tie its lifetime
-	 * to the descriptor's one. Set the descriptor's address as the
-	 * request's cookie to retrieve it at completion time.
+	 * to the descriptor's one.
 	 */
-	request_ = std::make_unique<CaptureRequest>(camera,
-						    reinterpret_cast<uint64_t>(this));
+	request_ = std::make_unique<CaptureRequest>(camera);
 }

+CameraDevice::Camera3RequestDescriptor::Camera3RequestDescriptor() = default;
 CameraDevice::Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;

+CameraDevice::Camera3RequestDescriptor &
+CameraDevice::Camera3RequestDescriptor::operator=(Camera3RequestDescriptor &&) = default;
+
 /*
  * \class CameraDevice
  *
@@ -1811,8 +1813,8 @@  int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 	 * The descriptor and the associated memory reserved here are freed
 	 * at request complete time.
 	 */
-	Camera3RequestDescriptor *descriptor =
-		new Camera3RequestDescriptor(camera_.get(), camera3Request);
+	Camera3RequestDescriptor descriptor(camera_.get(), camera3Request);
+
 	/*
 	 * \todo The Android request model is incremental, settings passed in
 	 * previous requests are to be effective until overridden explicitly in
@@ -1822,12 +1824,12 @@  int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 	if (camera3Request->settings)
 		lastSettings_ = camera3Request->settings;
 	else
-		descriptor->settings_ = lastSettings_;
+		descriptor.settings_ = lastSettings_;

-	LOG(HAL, Debug) << "Queueing request " << descriptor->request_->cookie()
-			<< " with " << descriptor->buffers_.size() << " streams";
-	for (unsigned int i = 0; i < descriptor->buffers_.size(); ++i) {
-		const camera3_stream_buffer_t &camera3Buffer = descriptor->buffers_[i];
+	LOG(HAL, Debug) << "Queueing request " << descriptor.request_->cookie()
+			<< " with " << descriptor.buffers_.size() << " streams";
+	for (unsigned int i = 0; i < descriptor.buffers_.size(); ++i) {
+		const camera3_stream_buffer_t &camera3Buffer = descriptor.buffers_[i];
 		camera3_stream *camera3Stream = camera3Buffer.stream;
 		CameraStream *cameraStream = static_cast<CameraStream *>(camera3Stream->priv);

@@ -1860,7 +1862,7 @@  int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 			 * lifetime management only.
 			 */
 			buffer = createFrameBuffer(*camera3Buffer.buffer);
-			descriptor->frameBuffers_.emplace_back(buffer);
+			descriptor.frameBuffers_.emplace_back(buffer);
 			LOG(HAL, Debug) << ss.str() << " (direct)";
 			break;

@@ -1879,11 +1881,10 @@  int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques

 		if (!buffer) {
 			LOG(HAL, Error) << "Failed to create buffer";
-			delete descriptor;
 			return -ENOMEM;
 		}

-		descriptor->request_->addBuffer(cameraStream->stream(), buffer,
+		descriptor.request_->addBuffer(cameraStream->stream(), buffer,
 						camera3Buffer.acquire_fence);
 	}

@@ -1891,11 +1892,12 @@  int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 	 * Translate controls from Android to libcamera and queue the request
 	 * to the CameraWorker thread.
 	 */
-	int ret = processControls(descriptor);
+	int ret = processControls(&descriptor);
 	if (ret)
 		return ret;

-	worker_.queueRequest(descriptor->request_.get());
+	worker_.queueRequest(descriptor.request_.get());
+	descriptors_[descriptor.request_->cookie()] = std::move(descriptor);

 	return 0;
 }
@@ -1905,8 +1907,13 @@  void CameraDevice::requestComplete(Request *request)
 	const Request::BufferMap &buffers = request->buffers();
 	camera3_buffer_status status = CAMERA3_BUFFER_STATUS_OK;
 	std::unique_ptr<CameraMetadata> resultMetadata;
-	Camera3RequestDescriptor *descriptor =
-		reinterpret_cast<Camera3RequestDescriptor *>(request->cookie());
+	auto node = descriptors_.extract(request->cookie());
+	if (node.empty()) {
+		LOG(HAL, Error) << "Unknown request: " << request->cookie();
+		status = CAMERA3_BUFFER_STATUS_ERROR;
+		return;
+	}
+	Camera3RequestDescriptor &descriptor = node.mapped();

 	if (request->status() != Request::RequestComplete) {
 		LOG(HAL, Error) << "Request not successfully completed: "
@@ -1915,7 +1922,7 @@  void CameraDevice::requestComplete(Request *request)
 	}

 	LOG(HAL, Debug) << "Request " << request->cookie() << " completed with "
-			<< descriptor->buffers_.size() << " streams";
+			<< descriptor.buffers_.size() << " streams";

 	/*
 	 * \todo The timestamp used for the metadata is currently always taken
@@ -1924,10 +1931,10 @@  void CameraDevice::requestComplete(Request *request)
 	 * pipeline handlers) timestamp in the Request itself.
 	 */
 	uint64_t timestamp = buffers.begin()->second->metadata().timestamp;
-	resultMetadata = getResultMetadata(*descriptor, timestamp);
+	resultMetadata = getResultMetadata(descriptor, timestamp);

 	/* Handle any JPEG compression. */
-	for (camera3_stream_buffer_t &buffer : descriptor->buffers_) {
+	for (camera3_stream_buffer_t &buffer : descriptor.buffers_) {
 		CameraStream *cameraStream =
 			static_cast<CameraStream *>(buffer.stream->priv);

@@ -1942,7 +1949,7 @@  void CameraDevice::requestComplete(Request *request)

 		int ret = cameraStream->process(*src,
 						*buffer.buffer,
-						descriptor->settings_,
+						descriptor.settings_,
 						resultMetadata.get());
 		if (ret) {
 			status = CAMERA3_BUFFER_STATUS_ERROR;
@@ -1959,17 +1966,17 @@  void CameraDevice::requestComplete(Request *request)

 	/* Prepare to call back the Android camera stack. */
 	camera3_capture_result_t captureResult = {};
-	captureResult.frame_number = descriptor->frameNumber_;
-	captureResult.num_output_buffers = descriptor->buffers_.size();
-	for (camera3_stream_buffer_t &buffer : descriptor->buffers_) {
+	captureResult.frame_number = descriptor.frameNumber_;
+	captureResult.num_output_buffers = descriptor.buffers_.size();
+	for (camera3_stream_buffer_t &buffer : descriptor.buffers_) {
 		buffer.acquire_fence = -1;
 		buffer.release_fence = -1;
 		buffer.status = status;
 	}
-	captureResult.output_buffers = descriptor->buffers_.data();
+	captureResult.output_buffers = descriptor.buffers_.data();

 	if (status == CAMERA3_BUFFER_STATUS_OK) {
-		notifyShutter(descriptor->frameNumber_, timestamp);
+		notifyShutter(descriptor.frameNumber_, timestamp);

 		captureResult.partial_result = 1;
 		captureResult.result = resultMetadata->get();
@@ -1982,13 +1989,11 @@  void CameraDevice::requestComplete(Request *request)
 		 * is here signalled. Make sure the error path plays well with
 		 * the camera stack state machine.
 		 */
-		notifyError(descriptor->frameNumber_,
-			    descriptor->buffers_[0].stream);
+		notifyError(descriptor.frameNumber_,
+			    descriptor.buffers_[0].stream);
 	}

 	callbacks_->process_capture_result(callbacks_, &captureResult);
-
-	delete descriptor;
 }

 std::string CameraDevice::logPrefix() const
diff --git a/src/android/camera_device.h b/src/android/camera_device.h
index 11bdfec8..5a2d22d6 100644
--- a/src/android/camera_device.h
+++ b/src/android/camera_device.h
@@ -69,11 +69,13 @@  private:
 	CameraDevice(unsigned int id, std::shared_ptr<libcamera::Camera> camera);

 	struct Camera3RequestDescriptor {
+		Camera3RequestDescriptor();
+		~Camera3RequestDescriptor();
 		Camera3RequestDescriptor(libcamera::Camera *camera,
 					 const camera3_capture_request_t *camera3Request);
-		~Camera3RequestDescriptor();
+		Camera3RequestDescriptor &operator=(Camera3RequestDescriptor &&);

-		uint32_t frameNumber_;
+		uint32_t frameNumber_ = 0;
 		std::vector<camera3_stream_buffer_t> buffers_;
 		std::vector<std::unique_ptr<libcamera::FrameBuffer>> frameBuffers_;
 		CameraMetadata settings_;
@@ -122,6 +124,8 @@  private:
 	std::map<int, libcamera::PixelFormat> formatsMap_;
 	std::vector<CameraStream> streams_;

+	std::map<uint64_t, Camera3RequestDescriptor> descriptors_;
+
 	std::string maker_;
 	std::string model_;

diff --git a/src/android/camera_worker.cpp b/src/android/camera_worker.cpp
index df436460..300ddde0 100644
--- a/src/android/camera_worker.cpp
+++ b/src/android/camera_worker.cpp
@@ -26,10 +26,10 @@  LOG_DECLARE_CATEGORY(HAL)
  * by the CameraWorker which queues it to the libcamera::Camera after handling
  * fences.
  */
-CaptureRequest::CaptureRequest(libcamera::Camera *camera, uint64_t cookie)
+CaptureRequest::CaptureRequest(libcamera::Camera *camera)
 	: camera_(camera)
 {
-	request_ = camera_->createRequest(cookie);
+	request_ = camera_->createRequest(reinterpret_cast<uint64_t>(this));
 }

 void CaptureRequest::addBuffer(Stream *stream, FrameBuffer *buffer, int fence)
diff --git a/src/android/camera_worker.h b/src/android/camera_worker.h
index d7060576..64b1658b 100644
--- a/src/android/camera_worker.h
+++ b/src/android/camera_worker.h
@@ -22,7 +22,7 @@  class CameraDevice;
 class CaptureRequest
 {
 public:
-	CaptureRequest(libcamera::Camera *camera, uint64_t cookie);
+	CaptureRequest(libcamera::Camera *camera);

 	const std::vector<int> &fences() const { return acquireFences_; }
 	libcamera::ControlList &controls() { return request_->controls(); }