| Message ID | 93889cdefacaad260d978a8353066dd384a64609.1675230665.git.ming.qian@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: imx-jpeg: Add support for 12 bit extended jpeg | expand |
Le mercredi 01 février 2023 à 14:02 +0800, Ming Qian a écrit : > Y012 is a luma-only formats with 12-bits per pixel, > expanded to 16bits. > Data in the 12 high bits, zeros in the 4 low bits, > arranged in little endian order. > > Signed-off-by: Ming Qian <ming.qian@nxp.com> > --- > .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 11 +++++++++++ > drivers/media/v4l2-core/v4l2-ioctl.c | 1 + > include/uapi/linux/videodev2.h | 1 + > 3 files changed, 13 insertions(+) > > diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > index 6a387f9df3ba..3ffa29000238 100644 > --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > @@ -103,6 +103,17 @@ are often referred to as greyscale formats. > - ... > - ... > > + * .. _V4L2-PIX-FMT-Y012: Why the 0, can't this be name Y12 (just like Y14) ? > + > + - ``V4L2_PIX_FMT_Y012`` > + - 'Y012' > + > + - Y'\ :sub:`0`\ [3:0] `0000` > + - Y'\ :sub:`0`\ [11:4] > + - ... > + - ... > + - ... > + > * .. _V4L2-PIX-FMT-Y14: > > - ``V4L2_PIX_FMT_Y14`` > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c > index 067dbdd0a9ef..0ee730aa6cc7 100644 > --- a/drivers/media/v4l2-core/v4l2-ioctl.c > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c > @@ -1303,6 +1303,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) > case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; > case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; > case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; > + case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale"; break; > case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; > case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; > case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h > index 5448aa3b7858..3d8f89bff33c 100644 > --- a/include/uapi/linux/videodev2.h > +++ b/include/uapi/linux/videodev2.h > @@ -583,6 +583,7 @@ struct v4l2_pix_format { > #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */ > #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */ > #define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale */ > +#define V4L2_PIX_FMT_Y012 v4l2_fourcc('Y', '0', '1', '2') /* 12 Greyscale */ > #define V4L2_PIX_FMT_Y14 v4l2_fourcc('Y', '1', '4', ' ') /* 14 Greyscale */ > #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */ > #define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ') /* 16 Greyscale BE */
>From: Nicolas Dufresne <nicolas@ndufresne.ca> >Sent: 2023年2月10日 23:18 >To: Ming Qian <ming.qian@nxp.com>; mchehab@kernel.org; Mirela Rabulea >(OSS) <mirela.rabulea@oss.nxp.com>; hverkuil-cisco@xs4all.nl >Cc: shawnguo@kernel.org; s.hauer@pengutronix.de; kernel@pengutronix.de; >festevam@gmail.com; X.H. Bao <xiahong.bao@nxp.com>; dl-linux-imx <linux- >imx@nxp.com>; linux-media@vger.kernel.org; linux-kernel@vger.kernel.org; >devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org >Subject: [EXT] Re: [PATCH v2 02/10] media: Add Y012 video format > >Caution: EXT Email > >Le mercredi 01 février 2023 à 14:02 +0800, Ming Qian a écrit : >> Y012 is a luma-only formats with 12-bits per pixel, expanded to >> 16bits. >> Data in the 12 high bits, zeros in the 4 low bits, arranged in little >> endian order. >> >> Signed-off-by: Ming Qian <ming.qian@nxp.com> >> --- >> .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 11 +++++++++++ >> drivers/media/v4l2-core/v4l2-ioctl.c | 1 + >> include/uapi/linux/videodev2.h | 1 + >> 3 files changed, 13 insertions(+) >> >> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> index 6a387f9df3ba..3ffa29000238 100644 >> --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> @@ -103,6 +103,17 @@ are often referred to as greyscale formats. >> - ... >> - ... >> >> + * .. _V4L2-PIX-FMT-Y012: > >Why the 0, can't this be name Y12 (just like Y14) ? > Hi Nicolas, As the V4L2_PIX_FMT_Y12 is defined, but it's data is in the 12 low bits, zeros in the high bits. Here I want to place the 12 bits data in the high bits, with zeros in the 4 low bits. So I add 0 before 12, I want to say that the low bits are padding data 0. Or do you have a better suggestion? Ming >> + >> + - ``V4L2_PIX_FMT_Y012`` >> + - 'Y012' >> + >> + - Y'\ :sub:`0`\ [3:0] `0000` >> + - Y'\ :sub:`0`\ [11:4] >> + - ... >> + - ... >> + - ... >> + >> * .. _V4L2-PIX-FMT-Y14: >> >> - ``V4L2_PIX_FMT_Y14`` >> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c >> b/drivers/media/v4l2-core/v4l2-ioctl.c >> index 067dbdd0a9ef..0ee730aa6cc7 100644 >> --- a/drivers/media/v4l2-core/v4l2-ioctl.c >> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c >> @@ -1303,6 +1303,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc >*fmt) >> case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; >> case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; >> case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; >> + case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale"; break; >> case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; >> case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; >> case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; >> diff --git a/include/uapi/linux/videodev2.h >> b/include/uapi/linux/videodev2.h index 5448aa3b7858..3d8f89bff33c >> 100644 >> --- a/include/uapi/linux/videodev2.h >> +++ b/include/uapi/linux/videodev2.h >> @@ -583,6 +583,7 @@ struct v4l2_pix_format { >> #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */ >> #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale >*/ >> #define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale >*/ >> +#define V4L2_PIX_FMT_Y012 v4l2_fourcc('Y', '0', '1', '2') /* 12 Greyscale >*/ >> #define V4L2_PIX_FMT_Y14 v4l2_fourcc('Y', '1', '4', ' ') /* 14 Greyscale >*/ >> #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale >*/ >> #define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ') /* 16 >> Greyscale BE */
Le lundi 13 février 2023 à 09:22 +0000, Ming Qian a écrit : > > From: Nicolas Dufresne <nicolas@ndufresne.ca> > > Sent: 2023年2月10日 23:18 > > To: Ming Qian <ming.qian@nxp.com>; mchehab@kernel.org; Mirela Rabulea > > (OSS) <mirela.rabulea@oss.nxp.com>; hverkuil-cisco@xs4all.nl > > Cc: shawnguo@kernel.org; s.hauer@pengutronix.de; kernel@pengutronix.de; > > festevam@gmail.com; X.H. Bao <xiahong.bao@nxp.com>; dl-linux-imx <linux- > > imx@nxp.com>; linux-media@vger.kernel.org; linux-kernel@vger.kernel.org; > > devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org > > Subject: [EXT] Re: [PATCH v2 02/10] media: Add Y012 video format > > > > Caution: EXT Email > > > > Le mercredi 01 février 2023 à 14:02 +0800, Ming Qian a écrit : > > > Y012 is a luma-only formats with 12-bits per pixel, expanded to > > > 16bits. > > > Data in the 12 high bits, zeros in the 4 low bits, arranged in little > > > endian order. > > > > > > Signed-off-by: Ming Qian <ming.qian@nxp.com> > > > --- > > > .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 11 +++++++++++ > > > drivers/media/v4l2-core/v4l2-ioctl.c | 1 + > > > include/uapi/linux/videodev2.h | 1 + > > > 3 files changed, 13 insertions(+) > > > > > > diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > > > b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > > > index 6a387f9df3ba..3ffa29000238 100644 > > > --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > > > +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst > > > @@ -103,6 +103,17 @@ are often referred to as greyscale formats. > > > - ... > > > - ... > > > > > > + * .. _V4L2-PIX-FMT-Y012: > > > > Why the 0, can't this be name Y12 (just like Y14) ? > > > > Hi Nicolas, > As the V4L2_PIX_FMT_Y12 is defined, but it's data is in the 12 low bits, > zeros in the high bits. > Here I want to place the 12 bits data in the high bits, with zeros in the > 4 low bits. > So I add 0 before 12, I want to say that the low bits are padding data 0. > > Or do you have a better suggestion? I see, I had missed this aspect. I think in this context, it would be fair naming. Maybe drop a note in the doc saying just that: "In contrast to V4L2_PIX_FMT_Y12 format, which have its padding located in the most significant bits of the 16 bit word". Or something similar., Nicolas > > Ming > > > > + > > > + - ``V4L2_PIX_FMT_Y012`` > > > + - 'Y012' > > > + > > > + - Y'\ :sub:`0`\ [3:0] `0000` > > > + - Y'\ :sub:`0`\ [11:4] > > > + - ... > > > + - ... > > > + - ... > > > + > > > * .. _V4L2-PIX-FMT-Y14: > > > > > > - ``V4L2_PIX_FMT_Y14`` > > > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c > > > b/drivers/media/v4l2-core/v4l2-ioctl.c > > > index 067dbdd0a9ef..0ee730aa6cc7 100644 > > > --- a/drivers/media/v4l2-core/v4l2-ioctl.c > > > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c > > > @@ -1303,6 +1303,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc > > *fmt) > > > case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; > > > case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; > > > case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; > > > + case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale"; break; > > > case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; > > > case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; > > > case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; > > > break; > > > diff --git a/include/uapi/linux/videodev2.h > > > b/include/uapi/linux/videodev2.h index 5448aa3b7858..3d8f89bff33c > > > 100644 > > > --- a/include/uapi/linux/videodev2.h > > > +++ b/include/uapi/linux/videodev2.h > > > @@ -583,6 +583,7 @@ struct v4l2_pix_format { > > > #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 > > > Greyscale */ > > > #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 > > > Greyscale > > */ > > > #define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 > > > Greyscale > > */ > > > +#define V4L2_PIX_FMT_Y012 v4l2_fourcc('Y', '0', '1', '2') /* 12 > > > Greyscale > > */ > > > #define V4L2_PIX_FMT_Y14 v4l2_fourcc('Y', '1', '4', ' ') /* 14 > > > Greyscale > > */ > > > #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 > > > Greyscale > > */ > > > #define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ') /* 16 > > > Greyscale BE */ >
>From: Nicolas Dufresne <nicolas@ndufresne.ca> >Sent: 2023年2月14日 0:39 >To: Ming Qian <ming.qian@nxp.com>; mchehab@kernel.org; Mirela Rabulea >(OSS) <mirela.rabulea@oss.nxp.com>; hverkuil-cisco@xs4all.nl >Cc: shawnguo@kernel.org; s.hauer@pengutronix.de; kernel@pengutronix.de; >festevam@gmail.com; X.H. Bao <xiahong.bao@nxp.com>; dl-linux-imx <linux- >imx@nxp.com>; linux-media@vger.kernel.org; linux-kernel@vger.kernel.org; >devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org >Subject: Re: [EXT] Re: [PATCH v2 02/10] media: Add Y012 video format > >Caution: EXT Email > >Le lundi 13 février 2023 à 09:22 +0000, Ming Qian a écrit : >> > From: Nicolas Dufresne <nicolas@ndufresne.ca> >> > Sent: 2023年2月10日 23:18 >> > To: Ming Qian <ming.qian@nxp.com>; mchehab@kernel.org; Mirela >> > Rabulea >> > (OSS) <mirela.rabulea@oss.nxp.com>; hverkuil-cisco@xs4all.nl >> > Cc: shawnguo@kernel.org; s.hauer@pengutronix.de; >> > kernel@pengutronix.de; festevam@gmail.com; X.H. Bao >> > <xiahong.bao@nxp.com>; dl-linux-imx <linux- imx@nxp.com>; >> > linux-media@vger.kernel.org; linux-kernel@vger.kernel.org; >> > devicetree@vger.kernel.org; linux-arm-kernel@lists.infradead.org >> > Subject: [EXT] Re: [PATCH v2 02/10] media: Add Y012 video format >> > >> > Caution: EXT Email >> > >> > Le mercredi 01 février 2023 à 14:02 +0800, Ming Qian a écrit : >> > > Y012 is a luma-only formats with 12-bits per pixel, expanded to >> > > 16bits. >> > > Data in the 12 high bits, zeros in the 4 low bits, arranged in >> > > little endian order. >> > > >> > > Signed-off-by: Ming Qian <ming.qian@nxp.com> >> > > --- >> > > .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 11 +++++++++++ >> > > drivers/media/v4l2-core/v4l2-ioctl.c | 1 + >> > > include/uapi/linux/videodev2.h | 1 + >> > > 3 files changed, 13 insertions(+) >> > > >> > > diff --git >> > > a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> > > b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> > > index 6a387f9df3ba..3ffa29000238 100644 >> > > --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> > > +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst >> > > @@ -103,6 +103,17 @@ are often referred to as greyscale formats. >> > > - ... >> > > - ... >> > > >> > > + * .. _V4L2-PIX-FMT-Y012: >> > >> > Why the 0, can't this be name Y12 (just like Y14) ? >> > >> >> Hi Nicolas, >> As the V4L2_PIX_FMT_Y12 is defined, but it's data is in the 12 low >> bits, zeros in the high bits. >> Here I want to place the 12 bits data in the high bits, with zeros >> in the >> 4 low bits. >> So I add 0 before 12, I want to say that the low bits are padding data 0. >> >> Or do you have a better suggestion? > >I see, I had missed this aspect. I think in this context, it would be fair naming. >Maybe drop a note in the doc saying just that: > >"In contrast to V4L2_PIX_FMT_Y12 format, which have its padding located in >the most significant bits of the 16 bit word". > >Or something similar., >Nicolas Hi Nicolas, Thanks very much, I'll include the description in v3 patch > >> >> Ming >> >> > > + >> > > + - ``V4L2_PIX_FMT_Y012`` >> > > + - 'Y012' >> > > + >> > > + - Y'\ :sub:`0`\ [3:0] `0000` >> > > + - Y'\ :sub:`0`\ [11:4] >> > > + - ... >> > > + - ... >> > > + - ... >> > > + >> > > * .. _V4L2-PIX-FMT-Y14: >> > > >> > > - ``V4L2_PIX_FMT_Y14`` >> > > diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c >> > > b/drivers/media/v4l2-core/v4l2-ioctl.c >> > > index 067dbdd0a9ef..0ee730aa6cc7 100644 >> > > --- a/drivers/media/v4l2-core/v4l2-ioctl.c >> > > +++ b/drivers/media/v4l2-core/v4l2-ioctl.c >> > > @@ -1303,6 +1303,7 @@ static void v4l_fill_fmtdesc(struct >> > > v4l2_fmtdesc >> > *fmt) >> > > case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; >> > > case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; >> > > case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; >> > > + case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale"; break; >> > > case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; >> > > case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; >> > > case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; >> > > break; >> > > diff --git a/include/uapi/linux/videodev2.h >> > > b/include/uapi/linux/videodev2.h index 5448aa3b7858..3d8f89bff33c >> > > 100644 >> > > --- a/include/uapi/linux/videodev2.h >> > > +++ b/include/uapi/linux/videodev2.h >> > > @@ -583,6 +583,7 @@ struct v4l2_pix_format { >> > > #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 >> > > Greyscale */ >> > > #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 >> > > Greyscale >> > */ >> > > #define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 >> > > Greyscale >> > */ >> > > +#define V4L2_PIX_FMT_Y012 v4l2_fourcc('Y', '0', '1', '2') /* 12 >> > > Greyscale >> > */ >> > > #define V4L2_PIX_FMT_Y14 v4l2_fourcc('Y', '1', '4', ' ') /* 14 >> > > Greyscale >> > */ >> > > #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 >> > > Greyscale >> > */ >> > > #define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ') >> > > /* 16 Greyscale BE */ >>
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst index 6a387f9df3ba..3ffa29000238 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-luma.rst @@ -103,6 +103,17 @@ are often referred to as greyscale formats. - ... - ... + * .. _V4L2-PIX-FMT-Y012: + + - ``V4L2_PIX_FMT_Y012`` + - 'Y012' + + - Y'\ :sub:`0`\ [3:0] `0000` + - Y'\ :sub:`0`\ [11:4] + - ... + - ... + - ... + * .. _V4L2-PIX-FMT-Y14: - ``V4L2_PIX_FMT_Y14`` diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 067dbdd0a9ef..0ee730aa6cc7 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1303,6 +1303,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break; case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break; case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break; + case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale"; break; case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break; case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break; case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 5448aa3b7858..3d8f89bff33c 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -583,6 +583,7 @@ struct v4l2_pix_format { #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */ #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */ #define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale */ +#define V4L2_PIX_FMT_Y012 v4l2_fourcc('Y', '0', '1', '2') /* 12 Greyscale */ #define V4L2_PIX_FMT_Y14 v4l2_fourcc('Y', '1', '4', ' ') /* 14 Greyscale */ #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */ #define V4L2_PIX_FMT_Y16_BE v4l2_fourcc_be('Y', '1', '6', ' ') /* 16 Greyscale BE */
Y012 is a luma-only formats with 12-bits per pixel, expanded to 16bits. Data in the 12 high bits, zeros in the 4 low bits, arranged in little endian order. Signed-off-by: Ming Qian <ming.qian@nxp.com> --- .../userspace-api/media/v4l/pixfmt-yuv-luma.rst | 11 +++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 13 insertions(+)