diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/dev-capture.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/dev-capture.rst | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/media/uapi/v4l/dev-capture.rst b/Documentation/media/uapi/v4l/dev-capture.rst index 8d049471e1c2..32b32055d070 100644 --- a/Documentation/media/uapi/v4l/dev-capture.rst +++ b/Documentation/media/uapi/v4l/dev-capture.rst @@ -26,7 +26,7 @@ Querying Capabilities Devices supporting the video capture interface set the ``V4L2_CAP_VIDEO_CAPTURE`` or ``V4L2_CAP_VIDEO_CAPTURE_MPLANE`` flag in the ``capabilities`` field of struct -:ref:`v4l2_capability <v4l2-capability>` returned by the +:c:type:`v4l2_capability` returned by the :ref:`VIDIOC_QUERYCAP` ioctl. As secondary device functions they may also support the :ref:`video overlay <overlay>` (``V4L2_CAP_VIDEO_OVERLAY``) and the :ref:`raw VBI capture <raw-vbi>` @@ -64,18 +64,18 @@ Cropping initialization at minimum requires to reset the parameters to defaults. An example is given in :ref:`crop`. To query the current image format applications set the ``type`` field of -a struct :ref:`v4l2_format <v4l2-format>` to +a struct :c:type:`v4l2_format` to ``V4L2_BUF_TYPE_VIDEO_CAPTURE`` or ``V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE`` and call the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` ioctl with a pointer to this structure. Drivers fill the struct -:ref:`v4l2_pix_format <v4l2-pix-format>` ``pix`` or the struct -:ref:`v4l2_pix_format_mplane <v4l2-pix-format-mplane>` ``pix_mp`` +:c:type:`v4l2_pix_format` ``pix`` or the struct +:c:type:`v4l2_pix_format_mplane` ``pix_mp`` member of the ``fmt`` union. To request different parameters applications set the ``type`` field of a -struct :ref:`v4l2_format <v4l2-format>` as above and initialize all -fields of the struct :ref:`v4l2_pix_format <v4l2-pix-format>` +struct :c:type:`v4l2_format` as above and initialize all +fields of the struct :c:type:`v4l2_pix_format` ``vbi`` member of the ``fmt`` union, or better just modify the results of :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>`, and call the :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl with a pointer to this structure. Drivers may adjust the @@ -86,8 +86,8 @@ Like :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` the :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` can be used to learn about hardware limitations without disabling I/O or possibly time consuming hardware preparations. -The contents of struct :ref:`v4l2_pix_format <v4l2-pix-format>` and -struct :ref:`v4l2_pix_format_mplane <v4l2-pix-format-mplane>` are +The contents of struct :c:type:`v4l2_pix_format` and +struct :c:type:`v4l2_pix_format_mplane` are discussed in :ref:`pixfmt`. See also the specification of the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>`, :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` and :ref:`VIDIOC_TRY_FMT <VIDIOC_G_FMT>` ioctls for details. Video capture devices must implement both the :ref:`VIDIOC_G_FMT <VIDIOC_G_FMT>` |