[libcamera-devel,v3,07/11] libcamera: media_device: Make open() and close() private

Message ID 20190511091907.10050-8-niklas.soderlund@ragnatech.se
State Superseded
Headers show
Series
  • libcamerea: Add support for exclusive access to cameras between processes
Related show

Commit Message

Niklas Söderlund May 11, 2019, 9:19 a.m. UTC
All external callers to open() and close() have been refactored and
there is no need to expose these functions anymore, make them private.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
---
 src/libcamera/include/media_device.h |  6 +-
 src/libcamera/media_device.cpp       | 98 ++++++++++++++--------------
 2 files changed, 52 insertions(+), 52 deletions(-)

Comments

Laurent Pinchart May 11, 2019, 12:57 p.m. UTC | #1
Hi Niklas,

Thank you for the patch.

On Sat, May 11, 2019 at 11:19:03AM +0200, Niklas Söderlund wrote:
> All external callers to open() and close() have been refactored and
> there is no need to expose these functions anymore, make them private.
> 
> Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  src/libcamera/include/media_device.h |  6 +-
>  src/libcamera/media_device.cpp       | 98 ++++++++++++++--------------
>  2 files changed, 52 insertions(+), 52 deletions(-)
> 
> diff --git a/src/libcamera/include/media_device.h b/src/libcamera/include/media_device.h
> index 883985055eb419dd..e513a2fee1b91a1b 100644
> --- a/src/libcamera/include/media_device.h
> +++ b/src/libcamera/include/media_device.h
> @@ -30,9 +30,6 @@ public:
>  	void release();
>  	bool busy() const { return acquired_; }
>  
> -	int open();
> -	void close();
> -
>  	int populate();
>  	bool valid() const { return valid_; }
>  
> @@ -62,6 +59,9 @@ private:
>  	bool valid_;
>  	bool acquired_;
>  
> +	int open();
> +	void close();
> +
>  	std::map<unsigned int, MediaObject *> objects_;
>  	MediaObject *object(unsigned int id);
>  	bool addObject(MediaObject *object);
> diff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp
> index b1cc37e840a9fa9d..62c59e7e8fc0299f 100644
> --- a/src/libcamera/media_device.cpp
> +++ b/src/libcamera/media_device.cpp
> @@ -126,55 +126,6 @@ void MediaDevice::release()
>   * \sa acquire(), release()
>   */
>  
> -/**
> - * \brief Open the media device
> - *
> - * \return 0 on success or a negative error code otherwise
> - * \retval -EBUSY Media device already open
> - * \sa close()
> - */
> -int MediaDevice::open()
> -{
> -	if (fd_ != -1) {
> -		LOG(MediaDevice, Error) << "MediaDevice already open";
> -		return -EBUSY;
> -	}
> -
> -	int ret = ::open(deviceNode_.c_str(), O_RDWR);
> -	if (ret < 0) {
> -		ret = -errno;
> -		LOG(MediaDevice, Error)
> -			<< "Failed to open media device at "
> -			<< deviceNode_ << ": " << strerror(-ret);
> -		return ret;
> -	}
> -	fd_ = ret;
> -
> -	return 0;
> -}
> -
> -/**
> - * \brief Close the media device
> - *
> - * This function closes the media device node. It does not invalidate the media
> - * graph and all cached media objects remain valid and can be accessed normally.
> - * Once closed no operation interacting with the media device node can be
> - * performed until the device is opened again.
> - *
> - * Closing an already closed device is allowed and will not perform any
> - * operation.
> - *
> - * \sa open()
> - */
> -void MediaDevice::close()
> -{
> -	if (fd_ == -1)
> -		return;
> -
> -	::close(fd_);
> -	fd_ = -1;
> -}
> -
>  /**
>   * \brief Populate the MediaDevice with device information and media objects
>   *
> @@ -440,6 +391,55 @@ int MediaDevice::disableLinks()
>   * driver unloading for most devices. The media device is passed as a parameter.
>   */
>  
> +/**
> + * \brief Open the media device
> + *
> + * \return 0 on success or a negative error code otherwise
> + * \retval -EBUSY Media device already open
> + * \sa close()
> + */
> +int MediaDevice::open()
> +{
> +	if (fd_ != -1) {
> +		LOG(MediaDevice, Error) << "MediaDevice already open";
> +		return -EBUSY;
> +	}
> +
> +	int ret = ::open(deviceNode_.c_str(), O_RDWR);
> +	if (ret < 0) {
> +		ret = -errno;
> +		LOG(MediaDevice, Error)
> +			<< "Failed to open media device at "
> +			<< deviceNode_ << ": " << strerror(-ret);
> +		return ret;
> +	}
> +	fd_ = ret;
> +
> +	return 0;
> +}
> +
> +/**
> + * \brief Close the media device
> + *
> + * This function closes the media device node. It does not invalidate the media
> + * graph and all cached media objects remain valid and can be accessed normally.
> + * Once closed no operation interacting with the media device node can be
> + * performed until the device is opened again.
> + *
> + * Closing an already closed device is allowed and will not perform any
> + * operation.
> + *
> + * \sa open()
> + */
> +void MediaDevice::close()
> +{
> +	if (fd_ == -1)
> +		return;
> +
> +	::close(fd_);
> +	fd_ = -1;
> +}
> +
>  /**
>   * \var MediaDevice::objects_
>   * \brief Global map of media objects (entities, pads, links) keyed by their

Patch

diff --git a/src/libcamera/include/media_device.h b/src/libcamera/include/media_device.h
index 883985055eb419dd..e513a2fee1b91a1b 100644
--- a/src/libcamera/include/media_device.h
+++ b/src/libcamera/include/media_device.h
@@ -30,9 +30,6 @@  public:
 	void release();
 	bool busy() const { return acquired_; }
 
-	int open();
-	void close();
-
 	int populate();
 	bool valid() const { return valid_; }
 
@@ -62,6 +59,9 @@  private:
 	bool valid_;
 	bool acquired_;
 
+	int open();
+	void close();
+
 	std::map<unsigned int, MediaObject *> objects_;
 	MediaObject *object(unsigned int id);
 	bool addObject(MediaObject *object);
diff --git a/src/libcamera/media_device.cpp b/src/libcamera/media_device.cpp
index b1cc37e840a9fa9d..62c59e7e8fc0299f 100644
--- a/src/libcamera/media_device.cpp
+++ b/src/libcamera/media_device.cpp
@@ -126,55 +126,6 @@  void MediaDevice::release()
  * \sa acquire(), release()
  */
 
-/**
- * \brief Open the media device
- *
- * \return 0 on success or a negative error code otherwise
- * \retval -EBUSY Media device already open
- * \sa close()
- */
-int MediaDevice::open()
-{
-	if (fd_ != -1) {
-		LOG(MediaDevice, Error) << "MediaDevice already open";
-		return -EBUSY;
-	}
-
-	int ret = ::open(deviceNode_.c_str(), O_RDWR);
-	if (ret < 0) {
-		ret = -errno;
-		LOG(MediaDevice, Error)
-			<< "Failed to open media device at "
-			<< deviceNode_ << ": " << strerror(-ret);
-		return ret;
-	}
-	fd_ = ret;
-
-	return 0;
-}
-
-/**
- * \brief Close the media device
- *
- * This function closes the media device node. It does not invalidate the media
- * graph and all cached media objects remain valid and can be accessed normally.
- * Once closed no operation interacting with the media device node can be
- * performed until the device is opened again.
- *
- * Closing an already closed device is allowed and will not perform any
- * operation.
- *
- * \sa open()
- */
-void MediaDevice::close()
-{
-	if (fd_ == -1)
-		return;
-
-	::close(fd_);
-	fd_ = -1;
-}
-
 /**
  * \brief Populate the MediaDevice with device information and media objects
  *
@@ -440,6 +391,55 @@  int MediaDevice::disableLinks()
  * driver unloading for most devices. The media device is passed as a parameter.
  */
 
+/**
+ * \brief Open the media device
+ *
+ * \return 0 on success or a negative error code otherwise
+ * \retval -EBUSY Media device already open
+ * \sa close()
+ */
+int MediaDevice::open()
+{
+	if (fd_ != -1) {
+		LOG(MediaDevice, Error) << "MediaDevice already open";
+		return -EBUSY;
+	}
+
+	int ret = ::open(deviceNode_.c_str(), O_RDWR);
+	if (ret < 0) {
+		ret = -errno;
+		LOG(MediaDevice, Error)
+			<< "Failed to open media device at "
+			<< deviceNode_ << ": " << strerror(-ret);
+		return ret;
+	}
+	fd_ = ret;
+
+	return 0;
+}
+
+/**
+ * \brief Close the media device
+ *
+ * This function closes the media device node. It does not invalidate the media
+ * graph and all cached media objects remain valid and can be accessed normally.
+ * Once closed no operation interacting with the media device node can be
+ * performed until the device is opened again.
+ *
+ * Closing an already closed device is allowed and will not perform any
+ * operation.
+ *
+ * \sa open()
+ */
+void MediaDevice::close()
+{
+	if (fd_ == -1)
+		return;
+
+	::close(fd_);
+	fd_ = -1;
+}
+
 /**
  * \var MediaDevice::objects_
  * \brief Global map of media objects (entities, pads, links) keyed by their