diff options
Diffstat (limited to 'Documentation/DocBook/media/v4l')
| -rw-r--r-- | Documentation/DocBook/media/v4l/io.xml | 4 | ||||
| -rw-r--r-- | Documentation/DocBook/media/v4l/lirc_device_interface.xml | 2 | ||||
| -rw-r--r-- | Documentation/DocBook/media/v4l/media-types.xml | 64 | ||||
| -rw-r--r-- | Documentation/DocBook/media/v4l/pixfmt-z16.xml | 2 | ||||
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-reqbufs.xml | 2 |
5 files changed, 69 insertions, 5 deletions
diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml index e09025db92bd..21a3dde8f95d 100644 --- a/Documentation/DocBook/media/v4l/io.xml +++ b/Documentation/DocBook/media/v4l/io.xml @@ -88,7 +88,7 @@ function.<footnote> <structfield>capabilities</structfield> field of &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl is set. There are two streaming methods, to determine if the memory mapping flavor is -supported applications must call the &VIDIOC-REQBUFS; ioctl.</para> +supported applications must call the &VIDIOC-REQBUFS; ioctl with the memory type set to <constant>V4L2_MEMORY_MMAP</constant>.</para> <para>Streaming is an I/O method where only pointers to buffers are exchanged between application and driver, the data itself is not @@ -369,7 +369,7 @@ rest should be evident.</para> <structfield>capabilities</structfield> field of &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl is set. If the particular user pointer method (not only memory mapping) is supported must be -determined by calling the &VIDIOC-REQBUFS; ioctl.</para> +determined by calling the &VIDIOC-REQBUFS; ioctl with the memory type set to <constant>V4L2_MEMORY_USERPTR</constant>.</para> <para>This I/O method combines advantages of the read/write and memory mapping methods. Buffers (planes) are allocated by the application diff --git a/Documentation/DocBook/media/v4l/lirc_device_interface.xml b/Documentation/DocBook/media/v4l/lirc_device_interface.xml index 725b221e1f6c..f53ad58027a7 100644 --- a/Documentation/DocBook/media/v4l/lirc_device_interface.xml +++ b/Documentation/DocBook/media/v4l/lirc_device_interface.xml @@ -157,7 +157,7 @@ on working with the default settings initially.</para> <varlistentry> <term>LIRC_SET_{SEND,REC}_CARRIER</term> <listitem> - <para>Set send/receive carrier (in Hz).</para> + <para>Set send/receive carrier (in Hz). Return 0 on success.</para> </listitem> </varlistentry> <varlistentry> diff --git a/Documentation/DocBook/media/v4l/media-types.xml b/Documentation/DocBook/media/v4l/media-types.xml index 5e3f20fdcf17..95aa1f9c836a 100644 --- a/Documentation/DocBook/media/v4l/media-types.xml +++ b/Documentation/DocBook/media/v4l/media-types.xml @@ -121,6 +121,70 @@ <entry><constant>MEDIA_ENT_F_AUDIO_MIXER</constant></entry> <entry>Audio Mixer Function Entity.</entry> </row> + <row> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_COMPOSER</constant></entry> + <entry>Video composer (blender). An entity capable of video + composing must have at least two sink pads and one source + pad, and composes input video frames onto output video + frames. Composition can be performed using alpha blending, + color keying, raster operations (ROP), stitching or any other + means. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER</constant></entry> + <entry>Video pixel formatter. An entity capable of pixel formatting + must have at least one sink pad and one source pad. Read + pixel formatters read pixels from memory and perform a subset + of unpacking, cropping, color keying, alpha multiplication + and pixel encoding conversion. Write pixel formatters perform + a subset of dithering, pixel encoding conversion and packing + and write pixels to memory. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV</constant></entry> + <entry>Video pixel encoding converter. An entity capable of pixel + enconding conversion must have at least one sink pad and one + source pad, and convert the encoding of pixels received on + its sink pad(s) to a different encoding output on its source + pad(s). Pixel encoding conversion includes but isn't limited + to RGB to/from HSV, RGB to/from YUV and CFA (Bayer) to RGB + conversions. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_LUT</constant></entry> + <entry>Video look-up table. An entity capable of video lookup table + processing must have one sink pad and one source pad. It uses + the values of the pixels received on its sink pad to look up + entries in internal tables and output them on its source pad. + The lookup processing can be performed on all components + separately or combine them for multi-dimensional table + lookups. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_SCALER</constant></entry> + <entry>Video scaler. An entity capable of video scaling must have + at least one sink pad and one source pad, and scale the + video frame(s) received on its sink pad(s) to a different + resolution output on its source pad(s). The range of + supported scaling ratios is entity-specific and can differ + between the horizontal and vertical directions (in particular + scaling can be supported in one direction only). Binning and + skipping are considered as scaling. + </entry> + </row> + <row> + <entry><constant>MEDIA_ENT_F_PROC_VIDEO_STATISTICS</constant></entry> + <entry>Video statistics computation (histogram, 3A, ...). An entity + capable of statistics computation must have one sink pad and + one source pad. It computes statistics over the frames + received on its sink pad and outputs the statistics data on + its source pad. + </entry> + </row> </tbody> </tgroup> </table> diff --git a/Documentation/DocBook/media/v4l/pixfmt-z16.xml b/Documentation/DocBook/media/v4l/pixfmt-z16.xml index 3d87e4bf87b8..1d9cb1684bd3 100644 --- a/Documentation/DocBook/media/v4l/pixfmt-z16.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-z16.xml @@ -5,7 +5,7 @@ </refmeta> <refnamediv> <refname><constant>V4L2_PIX_FMT_Z16</constant></refname> - <refpurpose>Interleaved grey-scale image, e.g. from a stereo-pair</refpurpose> + <refpurpose>16-bit depth data with distance values at each pixel</refpurpose> </refnamediv> <refsect1> <title>Description</title> diff --git a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml index 0f193fda0470..6f529e100ea4 100644 --- a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml +++ b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml @@ -6,7 +6,7 @@ <refnamediv> <refname>VIDIOC_REQBUFS</refname> - <refpurpose>Initiate Memory Mapping or User Pointer I/O</refpurpose> + <refpurpose>Initiate Memory Mapping, User Pointer or DMA Buffer I/O</refpurpose> </refnamediv> <refsynopsisdiv> |
