@@ -190,6 +190,170 @@ component of each pixel in one 16 or 32 bit word.
- Cr\ :sub:`2`
- Cr\ :sub:`1`
- Cr\ :sub:`0`
+ -
+ * .. _V4L2-PIX-FMT-AYUV32:
+
+ - ``V4L2_PIX_FMT_AYUV32``
+ - 'AYUV'
+
+ - a\ :sub:`7`
+ - a\ :sub:`6`
+ - a\ :sub:`5`
+ - a\ :sub:`4`
+ - a\ :sub:`3`
+ - a\ :sub:`2`
+ - a\ :sub:`1`
+ - a\ :sub:`0`
+
+ - Y'\ :sub:`7`
+ - Y'\ :sub:`6`
+ - Y'\ :sub:`5`
+ - Y'\ :sub:`4`
+ - Y'\ :sub:`3`
+ - Y'\ :sub:`2`
+ - Y'\ :sub:`1`
+ - Y'\ :sub:`0`
+
+ - Cb\ :sub:`7`
+ - Cb\ :sub:`6`
+ - Cb\ :sub:`5`
+ - Cb\ :sub:`4`
+ - Cb\ :sub:`3`
+ - Cb\ :sub:`2`
+ - Cb\ :sub:`1`
+ - Cb\ :sub:`0`
+
+ - Cr\ :sub:`7`
+ - Cr\ :sub:`6`
+ - Cr\ :sub:`5`
+ - Cr\ :sub:`4`
+ - Cr\ :sub:`3`
+ - Cr\ :sub:`2`
+ - Cr\ :sub:`1`
+ - Cr\ :sub:`0`
+ -
+ * .. _V4L2-PIX-FMT-XYUV32:
+
+ - ``V4L2_PIX_FMT_XYUV32``
+ - 'XYUV'
+
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+
+ - Y'\ :sub:`7`
+ - Y'\ :sub:`6`
+ - Y'\ :sub:`5`
+ - Y'\ :sub:`4`
+ - Y'\ :sub:`3`
+ - Y'\ :sub:`2`
+ - Y'\ :sub:`1`
+ - Y'\ :sub:`0`
+
+ - Cb\ :sub:`7`
+ - Cb\ :sub:`6`
+ - Cb\ :sub:`5`
+ - Cb\ :sub:`4`
+ - Cb\ :sub:`3`
+ - Cb\ :sub:`2`
+ - Cb\ :sub:`1`
+ - Cb\ :sub:`0`
+
+ - Cr\ :sub:`7`
+ - Cr\ :sub:`6`
+ - Cr\ :sub:`5`
+ - Cr\ :sub:`4`
+ - Cr\ :sub:`3`
+ - Cr\ :sub:`2`
+ - Cr\ :sub:`1`
+ - Cr\ :sub:`0`
+ -
+ * .. _V4L2-PIX-FMT-VUYA32:
+
+ - ``V4L2_PIX_FMT_VUYA32``
+ - 'VUYA'
+
+ - Cr\ :sub:`7`
+ - Cr\ :sub:`6`
+ - Cr\ :sub:`5`
+ - Cr\ :sub:`4`
+ - Cr\ :sub:`3`
+ - Cr\ :sub:`2`
+ - Cr\ :sub:`1`
+ - Cr\ :sub:`0`
+
+ - Cb\ :sub:`7`
+ - Cb\ :sub:`6`
+ - Cb\ :sub:`5`
+ - Cb\ :sub:`4`
+ - Cb\ :sub:`3`
+ - Cb\ :sub:`2`
+ - Cb\ :sub:`1`
+ - Cb\ :sub:`0`
+
+ - Y'\ :sub:`7`
+ - Y'\ :sub:`6`
+ - Y'\ :sub:`5`
+ - Y'\ :sub:`4`
+ - Y'\ :sub:`3`
+ - Y'\ :sub:`2`
+ - Y'\ :sub:`1`
+ - Y'\ :sub:`0`
+
+ - a\ :sub:`7`
+ - a\ :sub:`6`
+ - a\ :sub:`5`
+ - a\ :sub:`4`
+ - a\ :sub:`3`
+ - a\ :sub:`2`
+ - a\ :sub:`1`
+ - a\ :sub:`0`
+ -
+ * .. _V4L2-PIX-FMT-VUYX32:
+
+ - ``V4L2_PIX_FMT_VUYX32``
+ - 'VUYX'
+
+ - Cr\ :sub:`7`
+ - Cr\ :sub:`6`
+ - Cr\ :sub:`5`
+ - Cr\ :sub:`4`
+ - Cr\ :sub:`3`
+ - Cr\ :sub:`2`
+ - Cr\ :sub:`1`
+ - Cr\ :sub:`0`
+
+ - Cb\ :sub:`7`
+ - Cb\ :sub:`6`
+ - Cb\ :sub:`5`
+ - Cb\ :sub:`4`
+ - Cb\ :sub:`3`
+ - Cb\ :sub:`2`
+ - Cb\ :sub:`1`
+ - Cb\ :sub:`0`
+
+ - Y'\ :sub:`7`
+ - Y'\ :sub:`6`
+ - Y'\ :sub:`5`
+ - Y'\ :sub:`4`
+ - Y'\ :sub:`3`
+ - Y'\ :sub:`2`
+ - Y'\ :sub:`1`
+ - Y'\ :sub:`0`
+
+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -
.. raw:: latex
@@ -202,4 +366,8 @@ component of each pixel in one 16 or 32 bit word.
#) The value of a = alpha bits is undefined when reading from the driver,
ignored when writing to the driver, except when alpha blending has
been negotiated for a :ref:`Video Overlay <overlay>` or
- :ref:`Video Output Overlay <osd>`.
+ :ref:`Video Output Overlay <osd>` for the formats Y444, YUV555 and
+ YUV4. However, for formats AYUV32 and VUYA32, the alpha component is
+ expected to contain a meaningful value that can be used by drivers
+ and applications. And, the formats XYUV32 and VUYX32 contain undefined
+ alpha values that must be ignored by all applications and drivers.
@@ -1212,6 +1212,10 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
+ case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
+ case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
+ case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
+ case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
@@ -562,6 +562,10 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_YUV555 v4l2_fourcc('Y', 'U', 'V', 'O') /* 16 YUV-5-5-5 */
#define V4L2_PIX_FMT_YUV565 v4l2_fourcc('Y', 'U', 'V', 'P') /* 16 YUV-5-6-5 */
#define V4L2_PIX_FMT_YUV32 v4l2_fourcc('Y', 'U', 'V', '4') /* 32 YUV-8-8-8-8 */
+#define V4L2_PIX_FMT_AYUV32 v4l2_fourcc('A', 'Y', 'U', 'V') /* 32 AYUV-8-8-8-8 */
+#define V4L2_PIX_FMT_XYUV32 v4l2_fourcc('X', 'Y', 'U', 'V') /* 32 XYUV-8-8-8-8 */
+#define V4L2_PIX_FMT_VUYA32 v4l2_fourcc('V', 'U', 'Y', 'A') /* 32 VUYA-8-8-8-8 */
+#define V4L2_PIX_FMT_VUYX32 v4l2_fourcc('V', 'U', 'Y', 'X') /* 32 VUYX-8-8-8-8 */
#define V4L2_PIX_FMT_HI240 v4l2_fourcc('H', 'I', '2', '4') /* 8 8-bit color */
#define V4L2_PIX_FMT_HM12 v4l2_fourcc('H', 'M', '1', '2') /* 8 YUV 4:2:0 16x16 macroblocks */
#define V4L2_PIX_FMT_M420 v4l2_fourcc('M', '4', '2', '0') /* 12 YUV 4:2:0 2 lines y, 1 line uv interleaved */
The formats added in this patch include: V4L2_PIX_FMT_AYUV32 V4L2_PIX_FMT_XYUV32 V4L2_PIX_FMT_VUYA32 V4L2_PIX_FMT_VUYX32 These formats enable the trasmission of alpha channel data to other drivers and userspace applications in addition to YUV data. For example, buffers generated by drivers in one of these formats can be used by the Weston compositor to display as a texture or flipped directly onto the overlay planes with the help of a DRM driver. Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com> --- Documentation/media/uapi/v4l/pixfmt-packed-yuv.rst | 170 ++++++++++++++++++++- drivers/media/v4l2-core/v4l2-ioctl.c | 4 + include/uapi/linux/videodev2.h | 4 + 3 files changed, 177 insertions(+), 1 deletion(-)