[libcamera-devel,03/10] libcamera: pipeline: vimc: Create VimcCameraData

Message ID 20190228162913.6508-4-laurent.pinchart@ideasonboard.com
State Accepted
Headers show
Series
  • Rework request completion handling
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Commit Message

Laurent Pinchart Feb. 28, 2019, 4:29 p.m. UTC
Subclassing CameraData will become mandatory for pipeline handlers.
Create a new VimcCameraData class and instantiate it when creating
cameras to prepare for that change. The video_ and stream_ fields of the
VIMC pipeline handler belong to the camera data, move them there.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 src/libcamera/pipeline/vimc.cpp | 73 +++++++++++++++++++++++++--------
 1 file changed, 56 insertions(+), 17 deletions(-)

Comments

Niklas Söderlund Feb. 28, 2019, 4:59 p.m. UTC | #1
Hi Laurent,

Thanks for your work.

On 2019-02-28 18:29:06 +0200, Laurent Pinchart wrote:
> Subclassing CameraData will become mandatory for pipeline handlers.
> Create a new VimcCameraData class and instantiate it when creating
> cameras to prepare for that change. The video_ and stream_ fields of the
> VIMC pipeline handler belong to the camera data, move them there.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
>  src/libcamera/pipeline/vimc.cpp | 73 +++++++++++++++++++++++++--------
>  1 file changed, 56 insertions(+), 17 deletions(-)
> 
> diff --git a/src/libcamera/pipeline/vimc.cpp b/src/libcamera/pipeline/vimc.cpp
> index 640fca5cb0e7..ef47e7f96436 100644
> --- a/src/libcamera/pipeline/vimc.cpp
> +++ b/src/libcamera/pipeline/vimc.cpp
> @@ -13,6 +13,7 @@
>  #include "log.h"
>  #include "media_device.h"
>  #include "pipeline_handler.h"
> +#include "utils.h"
>  #include "v4l2_device.h"
>  
>  namespace libcamera {
> @@ -42,20 +43,38 @@ public:
>  	bool match(DeviceEnumerator *enumerator);
>  
>  private:
> +	class VimcCameraData : public CameraData
> +	{
> +	public:
> +		VimcCameraData()
> +		{
> +		}
> +
> +		~VimcCameraData()
> +		{
> +			delete video_;
> +		}
> +
> +		V4L2Device *video_;
> +		Stream stream_;
> +	};
> +
> +	VimcCameraData *cameraData(const Camera *camera)
> +	{
> +		return static_cast<VimcCameraData *>(
> +			PipelineHandler::cameraData(camera));
> +	}
> +
>  	std::shared_ptr<MediaDevice> media_;
> -	V4L2Device *video_;
> -	Stream stream_;
>  };
>  
>  PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
> -	: PipelineHandler(manager), media_(nullptr), video_(nullptr)
> +	: PipelineHandler(manager), media_(nullptr)
>  {
>  }
>  
>  PipelineHandlerVimc::~PipelineHandlerVimc()
>  {
> -	delete video_;
> -
>  	if (media_)
>  		media_->release();
>  }
> @@ -64,6 +83,7 @@ std::map<Stream *, StreamConfiguration>
>  PipelineHandlerVimc::streamConfiguration(Camera *camera,
>  				     std::vector<Stream *> &streams)
>  {
> +	VimcCameraData *data = cameraData(camera);
>  	std::map<Stream *, StreamConfiguration> configs;
>  
>  	StreamConfiguration config{};
> @@ -74,7 +94,7 @@ PipelineHandlerVimc::streamConfiguration(Camera *camera,
>  	config.pixelFormat = V4L2_PIX_FMT_RGB24;
>  	config.bufferCount = 4;
>  
> -	configs[&stream_] = config;
> +	configs[&data->stream_] = config;
>  
>  	return configs;
>  }
> @@ -82,7 +102,8 @@ PipelineHandlerVimc::streamConfiguration(Camera *camera,
>  int PipelineHandlerVimc::configureStreams(Camera *camera,
>  				      std::map<Stream *, StreamConfiguration> &config)
>  {
> -	StreamConfiguration *cfg = &config[&stream_];
> +	VimcCameraData *data = cameraData(camera);
> +	StreamConfiguration *cfg = &config[&data->stream_];
>  	int ret;
>  
>  	LOG(VIMC, Debug) << "Configure the camera for resolution "
> @@ -93,7 +114,7 @@ int PipelineHandlerVimc::configureStreams(Camera *camera,
>  	format.height = cfg->height;
>  	format.fourcc = cfg->pixelFormat;
>  
> -	ret = video_->setFormat(&format);
> +	ret = data->video_->setFormat(&format);
>  	if (ret)
>  		return ret;
>  
> @@ -107,31 +128,36 @@ int PipelineHandlerVimc::configureStreams(Camera *camera,
>  
>  int PipelineHandlerVimc::allocateBuffers(Camera *camera, Stream *stream)
>  {
> +	VimcCameraData *data = cameraData(camera);
>  	const StreamConfiguration &cfg = stream->configuration();
>  
>  	LOG(VIMC, Debug) << "Requesting " << cfg.bufferCount << " buffers";
>  
> -	return video_->exportBuffers(&stream->bufferPool());
> +	return data->video_->exportBuffers(&stream->bufferPool());
>  }
>  
>  int PipelineHandlerVimc::freeBuffers(Camera *camera, Stream *stream)
>  {
> -	return video_->releaseBuffers();
> +	VimcCameraData *data = cameraData(camera);
> +	return data->video_->releaseBuffers();
>  }
>  
>  int PipelineHandlerVimc::start(const Camera *camera)
>  {
> -	return video_->streamOn();
> +	VimcCameraData *data = cameraData(camera);
> +	return data->video_->streamOn();
>  }
>  
>  void PipelineHandlerVimc::stop(const Camera *camera)
>  {
> -	video_->streamOff();
> +	VimcCameraData *data = cameraData(camera);
> +	data->video_->streamOff();
>  }
>  
>  int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
>  {
> -	Buffer *buffer = request->findBuffer(&stream_);
> +	VimcCameraData *data = cameraData(camera);
> +	Buffer *buffer = request->findBuffer(&data->stream_);
>  	if (!buffer) {
>  		LOG(VIMC, Error)
>  			<< "Attempt to queue request with invalid stream";
> @@ -139,7 +165,7 @@ int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
>  		return -ENOENT;
>  	}
>  
> -	video_->queueBuffer(buffer);
> +	data->video_->queueBuffer(buffer);
>  
>  	return 0;
>  }
> @@ -164,13 +190,26 @@ bool PipelineHandlerVimc::match(DeviceEnumerator *enumerator)
>  
>  	media_->acquire();
>  
> -	video_ = new V4L2Device(media_->getEntityByName("Raw Capture 1"));
> -	if (video_->open())
> +	std::unique_ptr<VimcCameraData> data = utils::make_unique<VimcCameraData>();
> +
> +	/* Locate and open the capture video node. */
> +	MediaEntity *entity = media_->getEntityByName("Raw Capture 1");
> +	if (!entity) {
> +		LOG(VIMC, Error)
> +			<< "Can't find 'Raw Capture 1' entity";
> +		return false;
> +	}

This check is redundant as we add "Raw Capture 1" to the device matcher 
we are guaranteed it exists in the media graph. With this check dropped,

Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

> +
> +	data->video_ = new V4L2Device(entity);
> +	if (data->video_->open())
>  		return false;
>  
> -	std::vector<Stream *> streams{ &stream_ };
> +	/* Create and register the camera. */
> +	std::vector<Stream *> streams{ &data->stream_ };
>  	std::shared_ptr<Camera> camera = Camera::create(this, "VIMC Sensor B",
>  							streams);
> +
> +	setCameraData(camera.get(), std::move(data));
>  	registerCamera(std::move(camera));
>  
>  	return true;
> -- 
> Regards,
> 
> Laurent Pinchart
> 
> _______________________________________________
> libcamera-devel mailing list
> libcamera-devel@lists.libcamera.org
> https://lists.libcamera.org/listinfo/libcamera-devel
Jacopo Mondi March 1, 2019, 1:09 p.m. UTC | #2
HI Laurent,

On Thu, Feb 28, 2019 at 06:29:06PM +0200, Laurent Pinchart wrote:
> Subclassing CameraData will become mandatory for pipeline handlers.
> Create a new VimcCameraData class and instantiate it when creating
> cameras to prepare for that change. The video_ and stream_ fields of the
> VIMC pipeline handler belong to the camera data, move them there.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

With Niklas' comment addressed:
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

Thanks
  j
> ---
>  src/libcamera/pipeline/vimc.cpp | 73 +++++++++++++++++++++++++--------
>  1 file changed, 56 insertions(+), 17 deletions(-)
>
> diff --git a/src/libcamera/pipeline/vimc.cpp b/src/libcamera/pipeline/vimc.cpp
> index 640fca5cb0e7..ef47e7f96436 100644
> --- a/src/libcamera/pipeline/vimc.cpp
> +++ b/src/libcamera/pipeline/vimc.cpp
> @@ -13,6 +13,7 @@
>  #include "log.h"
>  #include "media_device.h"
>  #include "pipeline_handler.h"
> +#include "utils.h"
>  #include "v4l2_device.h"
>
>  namespace libcamera {
> @@ -42,20 +43,38 @@ public:
>  	bool match(DeviceEnumerator *enumerator);
>
>  private:
> +	class VimcCameraData : public CameraData
> +	{
> +	public:
> +		VimcCameraData()
> +		{
> +		}
> +
> +		~VimcCameraData()
> +		{
> +			delete video_;
> +		}
> +
> +		V4L2Device *video_;
> +		Stream stream_;
> +	};
> +
> +	VimcCameraData *cameraData(const Camera *camera)
> +	{
> +		return static_cast<VimcCameraData *>(
> +			PipelineHandler::cameraData(camera));
> +	}
> +
>  	std::shared_ptr<MediaDevice> media_;
> -	V4L2Device *video_;
> -	Stream stream_;
>  };
>
>  PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
> -	: PipelineHandler(manager), media_(nullptr), video_(nullptr)
> +	: PipelineHandler(manager), media_(nullptr)
>  {
>  }
>
>  PipelineHandlerVimc::~PipelineHandlerVimc()
>  {
> -	delete video_;
> -
>  	if (media_)
>  		media_->release();
>  }
> @@ -64,6 +83,7 @@ std::map<Stream *, StreamConfiguration>
>  PipelineHandlerVimc::streamConfiguration(Camera *camera,
>  				     std::vector<Stream *> &streams)
>  {
> +	VimcCameraData *data = cameraData(camera);
>  	std::map<Stream *, StreamConfiguration> configs;
>
>  	StreamConfiguration config{};
> @@ -74,7 +94,7 @@ PipelineHandlerVimc::streamConfiguration(Camera *camera,
>  	config.pixelFormat = V4L2_PIX_FMT_RGB24;
>  	config.bufferCount = 4;
>
> -	configs[&stream_] = config;
> +	configs[&data->stream_] = config;
>
>  	return configs;
>  }
> @@ -82,7 +102,8 @@ PipelineHandlerVimc::streamConfiguration(Camera *camera,
>  int PipelineHandlerVimc::configureStreams(Camera *camera,
>  				      std::map<Stream *, StreamConfiguration> &config)
>  {
> -	StreamConfiguration *cfg = &config[&stream_];
> +	VimcCameraData *data = cameraData(camera);
> +	StreamConfiguration *cfg = &config[&data->stream_];
>  	int ret;
>
>  	LOG(VIMC, Debug) << "Configure the camera for resolution "
> @@ -93,7 +114,7 @@ int PipelineHandlerVimc::configureStreams(Camera *camera,
>  	format.height = cfg->height;
>  	format.fourcc = cfg->pixelFormat;
>
> -	ret = video_->setFormat(&format);
> +	ret = data->video_->setFormat(&format);
>  	if (ret)
>  		return ret;
>
> @@ -107,31 +128,36 @@ int PipelineHandlerVimc::configureStreams(Camera *camera,
>
>  int PipelineHandlerVimc::allocateBuffers(Camera *camera, Stream *stream)
>  {
> +	VimcCameraData *data = cameraData(camera);
>  	const StreamConfiguration &cfg = stream->configuration();
>
>  	LOG(VIMC, Debug) << "Requesting " << cfg.bufferCount << " buffers";
>
> -	return video_->exportBuffers(&stream->bufferPool());
> +	return data->video_->exportBuffers(&stream->bufferPool());
>  }
>
>  int PipelineHandlerVimc::freeBuffers(Camera *camera, Stream *stream)
>  {
> -	return video_->releaseBuffers();
> +	VimcCameraData *data = cameraData(camera);
> +	return data->video_->releaseBuffers();
>  }
>
>  int PipelineHandlerVimc::start(const Camera *camera)
>  {
> -	return video_->streamOn();
> +	VimcCameraData *data = cameraData(camera);
> +	return data->video_->streamOn();
>  }
>
>  void PipelineHandlerVimc::stop(const Camera *camera)
>  {
> -	video_->streamOff();
> +	VimcCameraData *data = cameraData(camera);
> +	data->video_->streamOff();
>  }
>
>  int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
>  {
> -	Buffer *buffer = request->findBuffer(&stream_);
> +	VimcCameraData *data = cameraData(camera);
> +	Buffer *buffer = request->findBuffer(&data->stream_);
>  	if (!buffer) {
>  		LOG(VIMC, Error)
>  			<< "Attempt to queue request with invalid stream";
> @@ -139,7 +165,7 @@ int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
>  		return -ENOENT;
>  	}
>
> -	video_->queueBuffer(buffer);
> +	data->video_->queueBuffer(buffer);
>
>  	return 0;
>  }
> @@ -164,13 +190,26 @@ bool PipelineHandlerVimc::match(DeviceEnumerator *enumerator)
>
>  	media_->acquire();
>
> -	video_ = new V4L2Device(media_->getEntityByName("Raw Capture 1"));
> -	if (video_->open())
> +	std::unique_ptr<VimcCameraData> data = utils::make_unique<VimcCameraData>();
> +
> +	/* Locate and open the capture video node. */
> +	MediaEntity *entity = media_->getEntityByName("Raw Capture 1");
> +	if (!entity) {
> +		LOG(VIMC, Error)
> +			<< "Can't find 'Raw Capture 1' entity";
> +		return false;
> +	}
> +
> +	data->video_ = new V4L2Device(entity);
> +	if (data->video_->open())
>  		return false;
>
> -	std::vector<Stream *> streams{ &stream_ };
> +	/* Create and register the camera. */
> +	std::vector<Stream *> streams{ &data->stream_ };
>  	std::shared_ptr<Camera> camera = Camera::create(this, "VIMC Sensor B",
>  							streams);
> +
> +	setCameraData(camera.get(), std::move(data));
>  	registerCamera(std::move(camera));
>
>  	return true;
> --
> Regards,
>
> Laurent Pinchart
>
> _______________________________________________
> libcamera-devel mailing list
> libcamera-devel@lists.libcamera.org
> https://lists.libcamera.org/listinfo/libcamera-devel

Patch

diff --git a/src/libcamera/pipeline/vimc.cpp b/src/libcamera/pipeline/vimc.cpp
index 640fca5cb0e7..ef47e7f96436 100644
--- a/src/libcamera/pipeline/vimc.cpp
+++ b/src/libcamera/pipeline/vimc.cpp
@@ -13,6 +13,7 @@ 
 #include "log.h"
 #include "media_device.h"
 #include "pipeline_handler.h"
+#include "utils.h"
 #include "v4l2_device.h"
 
 namespace libcamera {
@@ -42,20 +43,38 @@  public:
 	bool match(DeviceEnumerator *enumerator);
 
 private:
+	class VimcCameraData : public CameraData
+	{
+	public:
+		VimcCameraData()
+		{
+		}
+
+		~VimcCameraData()
+		{
+			delete video_;
+		}
+
+		V4L2Device *video_;
+		Stream stream_;
+	};
+
+	VimcCameraData *cameraData(const Camera *camera)
+	{
+		return static_cast<VimcCameraData *>(
+			PipelineHandler::cameraData(camera));
+	}
+
 	std::shared_ptr<MediaDevice> media_;
-	V4L2Device *video_;
-	Stream stream_;
 };
 
 PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
-	: PipelineHandler(manager), media_(nullptr), video_(nullptr)
+	: PipelineHandler(manager), media_(nullptr)
 {
 }
 
 PipelineHandlerVimc::~PipelineHandlerVimc()
 {
-	delete video_;
-
 	if (media_)
 		media_->release();
 }
@@ -64,6 +83,7 @@  std::map<Stream *, StreamConfiguration>
 PipelineHandlerVimc::streamConfiguration(Camera *camera,
 				     std::vector<Stream *> &streams)
 {
+	VimcCameraData *data = cameraData(camera);
 	std::map<Stream *, StreamConfiguration> configs;
 
 	StreamConfiguration config{};
@@ -74,7 +94,7 @@  PipelineHandlerVimc::streamConfiguration(Camera *camera,
 	config.pixelFormat = V4L2_PIX_FMT_RGB24;
 	config.bufferCount = 4;
 
-	configs[&stream_] = config;
+	configs[&data->stream_] = config;
 
 	return configs;
 }
@@ -82,7 +102,8 @@  PipelineHandlerVimc::streamConfiguration(Camera *camera,
 int PipelineHandlerVimc::configureStreams(Camera *camera,
 				      std::map<Stream *, StreamConfiguration> &config)
 {
-	StreamConfiguration *cfg = &config[&stream_];
+	VimcCameraData *data = cameraData(camera);
+	StreamConfiguration *cfg = &config[&data->stream_];
 	int ret;
 
 	LOG(VIMC, Debug) << "Configure the camera for resolution "
@@ -93,7 +114,7 @@  int PipelineHandlerVimc::configureStreams(Camera *camera,
 	format.height = cfg->height;
 	format.fourcc = cfg->pixelFormat;
 
-	ret = video_->setFormat(&format);
+	ret = data->video_->setFormat(&format);
 	if (ret)
 		return ret;
 
@@ -107,31 +128,36 @@  int PipelineHandlerVimc::configureStreams(Camera *camera,
 
 int PipelineHandlerVimc::allocateBuffers(Camera *camera, Stream *stream)
 {
+	VimcCameraData *data = cameraData(camera);
 	const StreamConfiguration &cfg = stream->configuration();
 
 	LOG(VIMC, Debug) << "Requesting " << cfg.bufferCount << " buffers";
 
-	return video_->exportBuffers(&stream->bufferPool());
+	return data->video_->exportBuffers(&stream->bufferPool());
 }
 
 int PipelineHandlerVimc::freeBuffers(Camera *camera, Stream *stream)
 {
-	return video_->releaseBuffers();
+	VimcCameraData *data = cameraData(camera);
+	return data->video_->releaseBuffers();
 }
 
 int PipelineHandlerVimc::start(const Camera *camera)
 {
-	return video_->streamOn();
+	VimcCameraData *data = cameraData(camera);
+	return data->video_->streamOn();
 }
 
 void PipelineHandlerVimc::stop(const Camera *camera)
 {
-	video_->streamOff();
+	VimcCameraData *data = cameraData(camera);
+	data->video_->streamOff();
 }
 
 int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
 {
-	Buffer *buffer = request->findBuffer(&stream_);
+	VimcCameraData *data = cameraData(camera);
+	Buffer *buffer = request->findBuffer(&data->stream_);
 	if (!buffer) {
 		LOG(VIMC, Error)
 			<< "Attempt to queue request with invalid stream";
@@ -139,7 +165,7 @@  int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
 		return -ENOENT;
 	}
 
-	video_->queueBuffer(buffer);
+	data->video_->queueBuffer(buffer);
 
 	return 0;
 }
@@ -164,13 +190,26 @@  bool PipelineHandlerVimc::match(DeviceEnumerator *enumerator)
 
 	media_->acquire();
 
-	video_ = new V4L2Device(media_->getEntityByName("Raw Capture 1"));
-	if (video_->open())
+	std::unique_ptr<VimcCameraData> data = utils::make_unique<VimcCameraData>();
+
+	/* Locate and open the capture video node. */
+	MediaEntity *entity = media_->getEntityByName("Raw Capture 1");
+	if (!entity) {
+		LOG(VIMC, Error)
+			<< "Can't find 'Raw Capture 1' entity";
+		return false;
+	}
+
+	data->video_ = new V4L2Device(entity);
+	if (data->video_->open())
 		return false;
 
-	std::vector<Stream *> streams{ &stream_ };
+	/* Create and register the camera. */
+	std::vector<Stream *> streams{ &data->stream_ };
 	std::shared_ptr<Camera> camera = Camera::create(this, "VIMC Sensor B",
 							streams);
+
+	setCameraData(camera.get(), std::move(data));
 	registerCamera(std::move(camera));
 
 	return true;