diff mbox series

[v2,3/4] media: Add NV12_4L4 tiled format

Message ID 20210727145745.25203-4-ezequiel@collabora.com (mailing list archive)
State New, archived
Headers show
Series media: visiting YUV tiled formats | expand

Commit Message

Ezequiel Garcia July 27, 2021, 2:57 p.m. UTC 
This format is produced by VeriSilicon Hantro G2 and VC8000D cores.
It is a simple 4x4 tiling layout in a linear way.

The pixel format was introduced by GStreamer using FourCC VT12,
so let's stick to it.

Link: https://gstreamer.freedesktop.org/documentation/video/video-format.html
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
 Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | 6 ++++++
 drivers/media/v4l2-core/v4l2-common.c                       | 3 +++
 drivers/media/v4l2-core/v4l2-ioctl.c                        | 1 +
 include/uapi/linux/videodev2.h                              | 1 +
 4 files changed, 11 insertions(+)

Comments

Hans Verkuil Aug. 4, 2021, 10:05 a.m. UTC | #1 
On 27/07/2021 16:57, Ezequiel Garcia wrote:
> This format is produced by VeriSilicon Hantro G2 and VC8000D cores.
> It is a simple 4x4 tiling layout in a linear way.
> 
> The pixel format was introduced by GStreamer using FourCC VT12,
> so let's stick to it.
> 
> Link: https://gstreamer.freedesktop.org/documentation/video/video-format.html
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> ---
>  Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst | 6 ++++++
>  drivers/media/v4l2-core/v4l2-common.c                       | 3 +++
>  drivers/media/v4l2-core/v4l2-ioctl.c                        | 1 +
>  include/uapi/linux/videodev2.h                              | 1 +
>  4 files changed, 11 insertions(+)
> 
> diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> index 884828f2272c..0fc74351605a 100644
> --- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
> @@ -254,6 +254,7 @@ of the luma plane.
>  
>  .. _V4L2-PIX-FMT-NV12MT:
>  .. _V4L2-PIX-FMT-NV12MT-16X16:
> +.. _V4L2-PIX-FMT-NV12-4L4:
>  .. _V4L2-PIX-FMT-NV12-16L16:
>  .. _V4L2-PIX-FMT-NV12-32L32:
>  
> @@ -279,6 +280,11 @@ If the vertical resolution is an odd number of macroblocks, the last row of
>  macroblocks is stored in linear order. The layouts of the luma and chroma
>  planes are identical.
>  
> +``V4L2_PIX_FMT_NV12_4L4`` stores pixel in 4x4 tiles, and stores
> +tiles linearly in memory. The line stride and image height must be
> +aligned to a multiple of 4. The layouts of the luma and chroma planes are
> +identical.
> +
>  ``V4L2_PIX_FMT_NV12_16L16`` stores pixel in 16x16 tiles, and stores
>  tiles linearly in memory. The line stride and image height must be
>  aligned to a multiple of 16. The layouts of the luma and chroma planes are
> diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
> index 04af03285a20..df34b2a283bc 100644
> --- a/drivers/media/v4l2-core/v4l2-common.c
> +++ b/drivers/media/v4l2-core/v4l2-common.c
> @@ -275,6 +275,9 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
>  		{ .format = V4L2_PIX_FMT_YUV422P, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 1 },
>  		{ .format = V4L2_PIX_FMT_GREY,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
>  
> +		/* Tiled YUV formats */
> +		{ .format = V4L2_PIX_FMT_NV12_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 2 },
> +
>  		/* YUV planar formats, non contiguous variant */
>  		{ .format = V4L2_PIX_FMT_YUV420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 },
>  		{ .format = V4L2_PIX_FMT_YVU420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 },
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 9a4195dcd2aa..00c15630fc60 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -1281,6 +1281,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
>  	case V4L2_PIX_FMT_NV61:		descr = "Y/CrCb 4:2:2"; break;
>  	case V4L2_PIX_FMT_NV24:		descr = "Y/CbCr 4:4:4"; break;
>  	case V4L2_PIX_FMT_NV42:		descr = "Y/CrCb 4:4:4"; break;
> +	case V4L2_PIX_FMT_NV12_4L4:	descr = "Y/CbCr 4:2:0 (4x4 linear tiles)"; break;

To remain consistent I would also rename this to "Y/CbCr 4:2:0 (4x4 Linear)".

Regards,

	Hans

>  	case V4L2_PIX_FMT_NV12_16L16:	descr = "Y/CbCr 4:2:0 (16x16 linear tiles)"; break;
>  	case V4L2_PIX_FMT_NV12_32L32:   descr = "Y/CbCr 4:2:0 (32x32 linear tiles)"; break;
>  	case V4L2_PIX_FMT_NV12M:	descr = "Y/CbCr 4:2:0 (N-C)"; break;
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 60abed3243f3..5cf71d3aa0a4 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -627,6 +627,7 @@ struct v4l2_pix_format {
>  #define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24  YVU444 planar */
>  
>  /* Tiled YUV formats */
> +#define V4L2_PIX_FMT_NV12_4L4 v4l2_fourcc('V', 'T', '1', '2')   /* 12  Y/CbCr 4:2:0  4x4 tiles */
>  #define V4L2_PIX_FMT_NV12_16L16 v4l2_fourcc('H', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 16x16 tiles */
>  #define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12  Y/CbCr 4:2:0 32x32 tiles */
>  
>
diff mbox series

Patch

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
index 884828f2272c..0fc74351605a 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
@@ -254,6 +254,7 @@  of the luma plane.
 
 .. _V4L2-PIX-FMT-NV12MT:
 .. _V4L2-PIX-FMT-NV12MT-16X16:
+.. _V4L2-PIX-FMT-NV12-4L4:
 .. _V4L2-PIX-FMT-NV12-16L16:
 .. _V4L2-PIX-FMT-NV12-32L32:
 
@@ -279,6 +280,11 @@  If the vertical resolution is an odd number of macroblocks, the last row of
 macroblocks is stored in linear order. The layouts of the luma and chroma
 planes are identical.
 
+``V4L2_PIX_FMT_NV12_4L4`` stores pixel in 4x4 tiles, and stores
+tiles linearly in memory. The line stride and image height must be
+aligned to a multiple of 4. The layouts of the luma and chroma planes are
+identical.
+
 ``V4L2_PIX_FMT_NV12_16L16`` stores pixel in 16x16 tiles, and stores
 tiles linearly in memory. The line stride and image height must be
 aligned to a multiple of 16. The layouts of the luma and chroma planes are
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 04af03285a20..df34b2a283bc 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -275,6 +275,9 @@  const struct v4l2_format_info *v4l2_format_info(u32 format)
 		{ .format = V4L2_PIX_FMT_YUV422P, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 1 },
 		{ .format = V4L2_PIX_FMT_GREY,    .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 1, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
 
+		/* Tiled YUV formats */
+		{ .format = V4L2_PIX_FMT_NV12_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 2 },
+
 		/* YUV planar formats, non contiguous variant */
 		{ .format = V4L2_PIX_FMT_YUV420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 },
 		{ .format = V4L2_PIX_FMT_YVU420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 },
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 9a4195dcd2aa..00c15630fc60 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1281,6 +1281,7 @@  static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 	case V4L2_PIX_FMT_NV61:		descr = "Y/CrCb 4:2:2"; break;
 	case V4L2_PIX_FMT_NV24:		descr = "Y/CbCr 4:4:4"; break;
 	case V4L2_PIX_FMT_NV42:		descr = "Y/CrCb 4:4:4"; break;
+	case V4L2_PIX_FMT_NV12_4L4:	descr = "Y/CbCr 4:2:0 (4x4 linear tiles)"; break;
 	case V4L2_PIX_FMT_NV12_16L16:	descr = "Y/CbCr 4:2:0 (16x16 linear tiles)"; break;
 	case V4L2_PIX_FMT_NV12_32L32:   descr = "Y/CbCr 4:2:0 (32x32 linear tiles)"; break;
 	case V4L2_PIX_FMT_NV12M:	descr = "Y/CbCr 4:2:0 (N-C)"; break;
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 60abed3243f3..5cf71d3aa0a4 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -627,6 +627,7 @@  struct v4l2_pix_format {
 #define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24  YVU444 planar */
 
 /* Tiled YUV formats */
+#define V4L2_PIX_FMT_NV12_4L4 v4l2_fourcc('V', 'T', '1', '2')   /* 12  Y/CbCr 4:2:0  4x4 tiles */
 #define V4L2_PIX_FMT_NV12_16L16 v4l2_fourcc('H', 'M', '1', '2') /* 12  Y/CbCr 4:2:0 16x16 tiles */
 #define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12  Y/CbCr 4:2:0 32x32 tiles */