From: "sandy.huang" <hjc@rock-chips.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: dri-devel@lists.freedesktop.org,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <maxime.ripard@bootlin.com>,
Sean Paul <sean@poorly.run>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 01/36] drm/fourcc: Add 2 plane YCbCr 10bit format support
Date: Mon, 23 Sep 2019 06:05:22 -0700 [thread overview]
Message-ID: <82664d48-36de-15fd-3b30-a12907e5bfcd@rock-chips.com> (raw)
In-Reply-To: <20190923125314.GJ1208@intel.com>
在 2019/9/23 上午5:53, Ville Syrjälä 写道:
> On Mon, Sep 23, 2019 at 08:38:50PM +0800, Sandy Huang wrote:
>> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
>> index 3feeaa3..5fe89e9 100644
>> --- a/include/uapi/drm/drm_fourcc.h
>> +++ b/include/uapi/drm/drm_fourcc.h
>> @@ -266,6 +266,21 @@ extern "C" {
>> #define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
>>
>> /*
>> + * 2 plane YCbCr 10bit
>> + * index 0 = Y plane, [9:0] Y
>> + * index 1 = Cr:Cb plane, [19:0] Cr:Cb little endian
>> + * or
>> + * index 1 = Cb:Cr plane, [19:0] Cb:Cr little endian
> What does "little endian" even mean for these?
It's Inherited from the following define, the difference is 8bit and 10bit.
/*
* 2 plane YCbCr
* index 0 = Y plane, [7:0] Y
* index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
* or
* index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
*/
#define DRM_FORMAT_NV12 fourcc_code('N', 'V', '1', '2') /* 2x2
subsampled Cr:Cb plane */
#define DRM_FORMAT_NV21 fourcc_code('N', 'V', '2', '1') /* 2x2
subsampled Cb:Cr plane */
#define DRM_FORMAT_NV16 fourcc_code('N', 'V', '1', '6') /* 2x1
subsampled Cr:Cb plane */
#define DRM_FORMAT_NV61 fourcc_code('N', 'V', '6', '1') /* 2x1
subsampled Cb:Cr plane */
#define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /*
non-subsampled Cr:Cb plane */
#define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4',
>
>> + */
>> +
>> +#define DRM_FORMAT_NV12_10 fourcc_code('N', 'A', '1', '2') /* 2x2 subsampled Cr:Cb plane */
>> +#define DRM_FORMAT_NV21_10 fourcc_code('N', 'A', '2', '1') /* 2x2 subsampled Cb:Cr plane */
>> +#define DRM_FORMAT_NV16_10 fourcc_code('N', 'A', '1', '6') /* 2x1 subsampled Cr:Cb plane */
>> +#define DRM_FORMAT_NV61_10 fourcc_code('N', 'A', '6', '1') /* 2x1 subsampled Cb:Cr plane */
>> +#define DRM_FORMAT_NV24_10 fourcc_code('N', 'A', '2', '4') /* non-subsampled Cr:Cb plane */
>> +#define DRM_FORMAT_NV42_10 fourcc_code('N', 'A', '4', '2') /* non-subsampled Cb:Cr plane */
>> +
>> +/*
>> * 3 plane YCbCr
>> * index 0: Y plane, [7:0] Y
>> * index 1: Cb plane, [7:0] Cb
>> --
>> 2.7.4
>>
>>
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: "sandy.huang" <hjc@rock-chips.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
David Airlie <airlied@linux.ie>, Sean Paul <sean@poorly.run>
Subject: Re: [PATCH 01/36] drm/fourcc: Add 2 plane YCbCr 10bit format support
Date: Mon, 23 Sep 2019 06:05:22 -0700 [thread overview]
Message-ID: <82664d48-36de-15fd-3b30-a12907e5bfcd@rock-chips.com> (raw)
In-Reply-To: <20190923125314.GJ1208@intel.com>
在 2019/9/23 上午5:53, Ville Syrjälä 写道:
> On Mon, Sep 23, 2019 at 08:38:50PM +0800, Sandy Huang wrote:
>> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
>> index 3feeaa3..5fe89e9 100644
>> --- a/include/uapi/drm/drm_fourcc.h
>> +++ b/include/uapi/drm/drm_fourcc.h
>> @@ -266,6 +266,21 @@ extern "C" {
>> #define DRM_FORMAT_P016 fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cr:Cb plane 16 bits per channel */
>>
>> /*
>> + * 2 plane YCbCr 10bit
>> + * index 0 = Y plane, [9:0] Y
>> + * index 1 = Cr:Cb plane, [19:0] Cr:Cb little endian
>> + * or
>> + * index 1 = Cb:Cr plane, [19:0] Cb:Cr little endian
> What does "little endian" even mean for these?
It's Inherited from the following define, the difference is 8bit and 10bit.
/*
* 2 plane YCbCr
* index 0 = Y plane, [7:0] Y
* index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
* or
* index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
*/
#define DRM_FORMAT_NV12 fourcc_code('N', 'V', '1', '2') /* 2x2
subsampled Cr:Cb plane */
#define DRM_FORMAT_NV21 fourcc_code('N', 'V', '2', '1') /* 2x2
subsampled Cb:Cr plane */
#define DRM_FORMAT_NV16 fourcc_code('N', 'V', '1', '6') /* 2x1
subsampled Cr:Cb plane */
#define DRM_FORMAT_NV61 fourcc_code('N', 'V', '6', '1') /* 2x1
subsampled Cb:Cr plane */
#define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /*
non-subsampled Cr:Cb plane */
#define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4',
>
>> + */
>> +
>> +#define DRM_FORMAT_NV12_10 fourcc_code('N', 'A', '1', '2') /* 2x2 subsampled Cr:Cb plane */
>> +#define DRM_FORMAT_NV21_10 fourcc_code('N', 'A', '2', '1') /* 2x2 subsampled Cb:Cr plane */
>> +#define DRM_FORMAT_NV16_10 fourcc_code('N', 'A', '1', '6') /* 2x1 subsampled Cr:Cb plane */
>> +#define DRM_FORMAT_NV61_10 fourcc_code('N', 'A', '6', '1') /* 2x1 subsampled Cb:Cr plane */
>> +#define DRM_FORMAT_NV24_10 fourcc_code('N', 'A', '2', '4') /* non-subsampled Cr:Cb plane */
>> +#define DRM_FORMAT_NV42_10 fourcc_code('N', 'A', '4', '2') /* non-subsampled Cb:Cr plane */
>> +
>> +/*
>> * 3 plane YCbCr
>> * index 0: Y plane, [7:0] Y
>> * index 1: Cb plane, [7:0] Cb
>> --
>> 2.7.4
>>
>>
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2019-09-23 13:06 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 12:38 [PATCH 00/36] Add support 10bit yuv format Sandy Huang
2019-09-23 12:38 ` Sandy Huang
2019-09-23 12:38 ` [PATCH 01/36] drm/fourcc: Add 2 plane YCbCr 10bit format support Sandy Huang
2019-09-23 12:38 ` Sandy Huang
2019-09-23 12:53 ` Ville Syrjälä
2019-09-23 13:05 ` sandy.huang [this message]
2019-09-23 13:05 ` sandy.huang
2019-09-23 18:30 ` Ville Syrjälä
2019-09-23 18:30 ` Ville Syrjälä
2019-09-24 6:47 ` sandy.huang
2019-09-23 13:06 ` Daniel Vetter
2019-09-24 6:46 ` sandy.huang
2019-09-24 7:00 ` sandy.huang
2019-09-24 7:00 ` sandy.huang
2019-09-24 10:12 ` Ayan Halder
2019-09-25 8:09 ` sandy.huang
2019-09-25 8:09 ` sandy.huang
2019-09-25 11:23 ` Daniel Vetter
2019-09-23 12:38 ` [PATCH 02/36] drm/rockchip: use bpp instead of cpp for drm_format_info Sandy Huang
2019-09-23 12:38 ` Sandy Huang
2019-09-23 12:38 ` Sandy Huang
2019-09-23 12:38 ` [PATCH 03/36] drm/i915: " Sandy Huang
2019-09-23 12:38 ` [PATCH 04/36] drm: exynos: " Sandy Huang
2019-09-23 12:38 ` Sandy Huang
2019-09-23 12:38 ` Sandy Huang
2019-09-23 13:03 ` [PATCH 00/36] Add support 10bit yuv format Daniel Vetter
2019-09-23 13:03 ` Daniel Vetter
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