Message ID | 20200427213236.333777-4-jacopo@jmondi.org |
---|---|
State | Superseded |
Headers | show |
Series |
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Related | show |
Hi Jacopo, Thanks for your work. On 2020-04-27 23:32:32 +0200, Jacopo Mondi wrote: > Implement V4L2Subdevice::getSelection() to support retrieving selection > rectangles from the v4l2 subdevice. > > Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> > --- > src/libcamera/include/v4l2_subdevice.h | 2 ++ > src/libcamera/v4l2_subdevice.cpp | 33 ++++++++++++++++++++++++++ > 2 files changed, 35 insertions(+) > > diff --git a/src/libcamera/include/v4l2_subdevice.h b/src/libcamera/include/v4l2_subdevice.h > index 9a5c812db9b6..27ba5b17f61e 100644 > --- a/src/libcamera/include/v4l2_subdevice.h > +++ b/src/libcamera/include/v4l2_subdevice.h > @@ -46,6 +46,8 @@ public: > > const MediaEntity *entity() const { return entity_; } > > + int getSelection(unsigned int pad, unsigned int target, > + Rectangle *rect); > int setSelection(unsigned int pad, unsigned int target, > Rectangle *rect); > > diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp > index 432e89eacbd3..74788ce7cf4f 100644 > --- a/src/libcamera/v4l2_subdevice.cpp > +++ b/src/libcamera/v4l2_subdevice.cpp > @@ -133,6 +133,39 @@ int V4L2Subdevice::open() > * \return The subdevice's associated media entity. > */ > > +/** > + * \brief Get selection rectangle \a rect for \a target > + * \param[in] pad The 0-indexed pad number the rectangle is retrieved from > + * \param[in] target The selection target defined by the V4L2_SEL_TGT_* flags > + * \param[out] rect The retrieved selection rectangle > + * \return 0 on success or a negative error code otherwise > + */ > +int V4L2Subdevice::getSelection(unsigned int pad, unsigned int target, > + Rectangle *rect) > +{ > + struct v4l2_subdev_selection sel = {}; > + > + sel.which = V4L2_SUBDEV_FORMAT_ACTIVE; > + sel.pad = pad; > + sel.target = target; > + sel.flags = 0; > + > + int ret = ioctl(VIDIOC_SUBDEV_G_SELECTION, &sel); > + if (ret < 0) { > + LOG(V4L2, Error) > + << "Unable to get rectangle " << target << " on pad " > + << pad << ": " << strerror(-ret); > + return ret; > + } > + > + rect->x = sel.r.left; > + rect->y = sel.r.top; > + rect->width = sel.r.width; > + rect->height = sel.r.height; > + > + return 0; > +} > + > /** > * \brief Set selection rectangle \a rect for \a target > * \param[in] pad The 0-indexed pad number the rectangle is to be applied to > -- > 2.26.1 > > _______________________________________________ > libcamera-devel mailing list > libcamera-devel@lists.libcamera.org > https://lists.libcamera.org/listinfo/libcamera-devel
Hi Jacopo, Thank you for the patch. On Mon, Apr 27, 2020 at 11:32:32PM +0200, Jacopo Mondi wrote: > Implement V4L2Subdevice::getSelection() to support retrieving selection > rectangles from the v4l2 subdevice. s/v4l2/V4L2/ > > Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > src/libcamera/include/v4l2_subdevice.h | 2 ++ > src/libcamera/v4l2_subdevice.cpp | 33 ++++++++++++++++++++++++++ > 2 files changed, 35 insertions(+) > > diff --git a/src/libcamera/include/v4l2_subdevice.h b/src/libcamera/include/v4l2_subdevice.h > index 9a5c812db9b6..27ba5b17f61e 100644 > --- a/src/libcamera/include/v4l2_subdevice.h > +++ b/src/libcamera/include/v4l2_subdevice.h > @@ -46,6 +46,8 @@ public: > > const MediaEntity *entity() const { return entity_; } > > + int getSelection(unsigned int pad, unsigned int target, > + Rectangle *rect); > int setSelection(unsigned int pad, unsigned int target, > Rectangle *rect); > > diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp > index 432e89eacbd3..74788ce7cf4f 100644 > --- a/src/libcamera/v4l2_subdevice.cpp > +++ b/src/libcamera/v4l2_subdevice.cpp > @@ -133,6 +133,39 @@ int V4L2Subdevice::open() > * \return The subdevice's associated media entity. > */ > > +/** > + * \brief Get selection rectangle \a rect for \a target > + * \param[in] pad The 0-indexed pad number the rectangle is retrieved from > + * \param[in] target The selection target defined by the V4L2_SEL_TGT_* flags > + * \param[out] rect The retrieved selection rectangle > + * \return 0 on success or a negative error code otherwise > + */ > +int V4L2Subdevice::getSelection(unsigned int pad, unsigned int target, > + Rectangle *rect) > +{ > + struct v4l2_subdev_selection sel = {}; > + > + sel.which = V4L2_SUBDEV_FORMAT_ACTIVE; > + sel.pad = pad; > + sel.target = target; > + sel.flags = 0; > + > + int ret = ioctl(VIDIOC_SUBDEV_G_SELECTION, &sel); > + if (ret < 0) { > + LOG(V4L2, Error) > + << "Unable to get rectangle " << target << " on pad " > + << pad << ": " << strerror(-ret); > + return ret; > + } > + > + rect->x = sel.r.left; > + rect->y = sel.r.top; > + rect->width = sel.r.width; > + rect->height = sel.r.height; > + > + return 0; > +} > + > /** > * \brief Set selection rectangle \a rect for \a target > * \param[in] pad The 0-indexed pad number the rectangle is to be applied to
diff --git a/src/libcamera/include/v4l2_subdevice.h b/src/libcamera/include/v4l2_subdevice.h index 9a5c812db9b6..27ba5b17f61e 100644 --- a/src/libcamera/include/v4l2_subdevice.h +++ b/src/libcamera/include/v4l2_subdevice.h @@ -46,6 +46,8 @@ public: const MediaEntity *entity() const { return entity_; } + int getSelection(unsigned int pad, unsigned int target, + Rectangle *rect); int setSelection(unsigned int pad, unsigned int target, Rectangle *rect); diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp index 432e89eacbd3..74788ce7cf4f 100644 --- a/src/libcamera/v4l2_subdevice.cpp +++ b/src/libcamera/v4l2_subdevice.cpp @@ -133,6 +133,39 @@ int V4L2Subdevice::open() * \return The subdevice's associated media entity. */ +/** + * \brief Get selection rectangle \a rect for \a target + * \param[in] pad The 0-indexed pad number the rectangle is retrieved from + * \param[in] target The selection target defined by the V4L2_SEL_TGT_* flags + * \param[out] rect The retrieved selection rectangle + * \return 0 on success or a negative error code otherwise + */ +int V4L2Subdevice::getSelection(unsigned int pad, unsigned int target, + Rectangle *rect) +{ + struct v4l2_subdev_selection sel = {}; + + sel.which = V4L2_SUBDEV_FORMAT_ACTIVE; + sel.pad = pad; + sel.target = target; + sel.flags = 0; + + int ret = ioctl(VIDIOC_SUBDEV_G_SELECTION, &sel); + if (ret < 0) { + LOG(V4L2, Error) + << "Unable to get rectangle " << target << " on pad " + << pad << ": " << strerror(-ret); + return ret; + } + + rect->x = sel.r.left; + rect->y = sel.r.top; + rect->width = sel.r.width; + rect->height = sel.r.height; + + return 0; +} + /** * \brief Set selection rectangle \a rect for \a target * \param[in] pad The 0-indexed pad number the rectangle is to be applied to
Implement V4L2Subdevice::getSelection() to support retrieving selection rectangles from the v4l2 subdevice. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> --- src/libcamera/include/v4l2_subdevice.h | 2 ++ src/libcamera/v4l2_subdevice.cpp | 33 ++++++++++++++++++++++++++ 2 files changed, 35 insertions(+)