Le mercredi 01 février 2023 à 14:02 +0800, Ming Qian a écrit :
> ABGR32_12 is a reversed RGB format with alpha channel last,
> 12 bits per component like ABGR32,
> expanded to 16bits.
> Data in the 12 high bits, zeros in the 4 low bits,
> arranged in little endian order.
I would like to suggest ABGR64_12
Nicolas
>
> Signed-off-by: Ming Qian <ming.qian@xxxxxxx>
> ---
> Documentation/userspace-api/media/v4l/pixfmt-rgb.rst | 9 +++++++++
> drivers/media/v4l2-core/v4l2-common.c | 1 +
> drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
> include/uapi/linux/videodev2.h | 1 +
> 4 files changed, 12 insertions(+)
>
> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst
> index da29ba69c2d9..cb60ffe8f860 100644
> --- a/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst
> +++ b/Documentation/userspace-api/media/v4l/pixfmt-rgb.rst
> @@ -793,6 +793,15 @@ arranged in little endian order.
> - G\ :sub:`15-4`
> - R\ :sub:`15-4`
> -
> + * .. _V4L2-PIX-FMT-ABGR32-12:
> +
> + - ``V4L2_PIX_FMT_ABGR32_12``
> + - 'B412'
> +
> + - B\ :sub:`15-4`
> + - G\ :sub:`15-4`
> + - R\ :sub:`15-4`
> + - A\ :sub:`15-4`
>
> .. raw:: latex
>
> diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
> index 024190f82cf1..4b3302a07f83 100644
> --- a/drivers/media/v4l2-core/v4l2-common.c
> +++ b/drivers/media/v4l2-core/v4l2-common.c
> @@ -253,6 +253,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
> { .format = V4L2_PIX_FMT_RGB555, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
> { .format = V4L2_PIX_FMT_BGR666, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
> { .format = V4L2_PIX_FMT_BGR24_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
> + { .format = V4L2_PIX_FMT_ABGR32_12, .pixel_enc = V4L2_PIXEL_ENC_RGB, .mem_planes = 1, .comp_planes = 1, .bpp = { 8, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
>
> /* YUV packed formats */
> { .format = V4L2_PIX_FMT_YUYV, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .hdiv = 2, .vdiv = 1 },
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 329515786abb..0f772e19890b 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -1299,6 +1299,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
> case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
> case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
> case V4L2_PIX_FMT_BGR24_12: descr = "12-bit Depth BGR"; break;
> + case V4L2_PIX_FMT_ABGR32_12: descr = "12-bit Depth BGRA"; break;
> case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
> case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
> case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index ab52a605e6c0..757ab14e7a6e 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -579,6 +579,7 @@ struct v4l2_pix_format {
>
> /* RGB formats (6 or 8 bytes per pixel) */
> #define V4L2_PIX_FMT_BGR24_12 v4l2_fourcc('B', '3', '1', '2') /* 48 BGR 12-bit per component */
> +#define V4L2_PIX_FMT_ABGR32_12 v4l2_fourcc('B', '4', '1', '2') /* 64 BGRA 12-bit per component */
>
> /* Grey formats */
> #define V4L2_PIX_FMT_GREY v4l2_fourcc('G', 'R', 'E', 'Y') /* 8 Greyscale */
