linux-kernel - Re: [PATCH v6 1/3] drm_fourcc: Add new P010, P016 video format

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Date:   Tue, 7 Mar 2017 01:58:23 +0800
From:   Ayaka <ayaka@...lik.info>
To:     Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc:     dri-devel@...ts.freedesktop.org, clinton.a.taylor@...el.com,
        daniel@...ishbar.org, linux-media@...r.kernel.org,
        mchehab@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 1/3] drm_fourcc: Add new P010, P016 video format



從我的 iPad 傳送

> Ville Syrjälä <ville.syrjala@...ux.intel.com> 於 2017年3月6日 下午9:06 寫道：
> 
>> On Sun, Mar 05, 2017 at 06:00:31PM +0800, Randy Li wrote:
>> P010 is a planar 4:2:0 YUV with interleaved UV plane, 10 bits
>> per channel video format.
>> 
>> P016 is a planar 4:2:0 YUV with interleaved UV plane, 16 bits
>> per channel video format.
>> 
>> V3: Added P012 and fixed cpp for P010
>> V4: format definition refined per review
>> V5: Format comment block for each new pixel format
>> V6: reversed Cb/Cr order in comments
>> v7: reversed Cb/Cr order in comments of header files, remove
>> the wrong part of commit message.
> 
> What? Why? You just undid what Clint did in v6.
He missed a file also keeping the wrong description of rockchip.
> 
>> 
>> Cc: Daniel Stone <daniel@...ishbar.org>
>> Cc: Ville Syrjälä <ville.syrjala@...ux.intel.com>
>> 
>> Signed-off-by: Randy Li <ayaka@...lik.info>
>> Signed-off-by: Clint Taylor <clinton.a.taylor@...el.com>
>> ---
>> drivers/gpu/drm/drm_fourcc.c  |  3 +++
>> include/uapi/drm/drm_fourcc.h | 21 +++++++++++++++++++++
>> 2 files changed, 24 insertions(+)
>> 
>> diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
>> index 90d2cc8..3e0fd58 100644
>> --- a/drivers/gpu/drm/drm_fourcc.c
>> +++ b/drivers/gpu/drm/drm_fourcc.c
>> @@ -165,6 +165,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
>>        { .format = DRM_FORMAT_UYVY,        .depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
>>        { .format = DRM_FORMAT_VYUY,        .depth = 0,  .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1 },
>>        { .format = DRM_FORMAT_AYUV,        .depth = 0,  .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
>> +        { .format = DRM_FORMAT_P010,        .depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2 },
>> +        { .format = DRM_FORMAT_P012,        .depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2 },
>> +        { .format = DRM_FORMAT_P016,        .depth = 0,  .num_planes = 2, .cpp = { 2, 4, 0 }, .hsub = 2, .vsub = 2 },
>>    };
>> 
>>    unsigned int i;
>> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
>> index ef20abb..306f979 100644
>> --- a/include/uapi/drm/drm_fourcc.h
>> +++ b/include/uapi/drm/drm_fourcc.h
>> @@ -128,6 +128,27 @@ extern "C" {
>> #define DRM_FORMAT_NV42        fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
>> 
>> /*
>> + * 2 plane YCbCr MSB aligned
>> + * index 0 = Y plane, [15:0] Y:x [10:6] little endian
>> + * index 1 = Cb:Cr plane, [31:0] Cb:x:Cr:x [10:6:10:6] little endian
>> + */
>> +#define DRM_FORMAT_P010        fourcc_code('P', '0', '1', '0') /* 2x2 subsampled Cb:Cr plane 10 bits per channel */
>> +
>> +/*
>> + * 2 plane YCbCr MSB aligned
>> + * index 0 = Y plane, [15:0] Y:x [12:4] little endian
>> + * index 1 = Cb:Cr plane, [31:0] Cb:x:Cr:x [12:4:12:4] little endian
>> + */
>> +#define DRM_FORMAT_P012        fourcc_code('P', '0', '1', '2') /* 2x2 subsampled Cb:Cr plane 12 bits per channel */
>> +
>> +/*
>> + * 2 plane YCbCr MSB aligned
>> + * index 0 = Y plane, [15:0] Y little endian
>> + * index 1 = Cb:Cr plane, [31:0] Cb:Cr [16:16] little endian
>> + */
>> +#define DRM_FORMAT_P016        fourcc_code('P', '0', '1', '6') /* 2x2 subsampled Cb:Cr plane 16 bits per channel */
>> +
>> +/*
>>  * 3 plane YCbCr
>>  * index 0: Y plane, [7:0] Y
>>  * index 1: Cb plane, [7:0] Cb
>> -- 
>> 2.7.4
> 
> -- 
> Ville Syrjälä
> Intel OTC