diff mbox

[v2] drm: add fourcc codes for 16bit R and GR

Message ID 20170103190207.4569-1-fernetmenta@kodi.tv (mailing list archive)
State New, archived
Headers show

Commit Message

Rainer Hochecker Jan. 3, 2017, 7:02 p.m. UTC 
From: Rainer Hochecker <fernetmenta@online.de>

Now sent with git send-email:

Signed-off-by: Rainer Hochecker <fernetmenta@online.de>
---
 include/uapi/drm/drm_fourcc.h | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Daniel Vetter Jan. 4, 2017, 8:52 a.m. UTC | #1 
On Tue, Jan 03, 2017 at 08:02:07PM +0100, Rainer Hochecker wrote:
> From: Rainer Hochecker <fernetmenta@online.de>
> 
> Now sent with git send-email:
> 
> Signed-off-by: Rainer Hochecker <fernetmenta@online.de>
> ---
>  include/uapi/drm/drm_fourcc.h | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index a5890bf..f1ef9cb 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -41,10 +41,17 @@ extern "C" {
>  /* 8 bpp Red */
>  #define DRM_FORMAT_R8		fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
>  
> +/* 16 bpp Red */
> +#define DRM_FORMAT_R16		fourcc_code('R', '1', '6', ' ') /* [15:0] R */
> +
>  /* 16 bpp RG */
>  #define DRM_FORMAT_RG88		fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
>  #define DRM_FORMAT_GR88		fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
>  
> +/* 32 bpp GR */
> +#define DRM_FORMAT_RG32		fourcc_code('R', 'G', '3', '2') /* [31:0] G:R 16:16 little endian */
> +#define DRM_FORMAT_GR32		fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */

Now the define's name is inconsistent, since that would suggest a 5 bpp
format with 3 bits for R and 2 bits for G. I think what we want here for
consistency is _RG16_16 and _GR16_16, along the lines of what Ville
suggested.

Sorry that this is such a bikeshed heaven ;-)
-Daniel

> +
>  /* 8 bpp RGB */
>  #define DRM_FORMAT_RGB332	fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
>  #define DRM_FORMAT_BGR233	fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
> -- 
> 2.9.3
>
Jani Nikula Jan. 4, 2017, 9:06 a.m. UTC | #2 
On Wed, 04 Jan 2017, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Tue, Jan 03, 2017 at 08:02:07PM +0100, Rainer Hochecker wrote:
>> From: Rainer Hochecker <fernetmenta@online.de>
>> 
>> Now sent with git send-email:
>> 
>> Signed-off-by: Rainer Hochecker <fernetmenta@online.de>
>> ---
>>  include/uapi/drm/drm_fourcc.h | 7 +++++++
>>  1 file changed, 7 insertions(+)
>> 
>> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
>> index a5890bf..f1ef9cb 100644
>> --- a/include/uapi/drm/drm_fourcc.h
>> +++ b/include/uapi/drm/drm_fourcc.h
>> @@ -41,10 +41,17 @@ extern "C" {
>>  /* 8 bpp Red */
>>  #define DRM_FORMAT_R8		fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
>>  
>> +/* 16 bpp Red */
>> +#define DRM_FORMAT_R16		fourcc_code('R', '1', '6', ' ') /* [15:0] R */
>> +
>>  /* 16 bpp RG */
>>  #define DRM_FORMAT_RG88		fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
>>  #define DRM_FORMAT_GR88		fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
>>  
>> +/* 32 bpp GR */
>> +#define DRM_FORMAT_RG32		fourcc_code('R', 'G', '3', '2') /* [31:0] G:R 16:16 little endian */
>> +#define DRM_FORMAT_GR32		fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
>
> Now the define's name is inconsistent, since that would suggest a 5 bpp
> format with 3 bits for R and 2 bits for G. I think what we want here for
> consistency is _RG16_16 and _GR16_16, along the lines of what Ville
> suggested.
>
> Sorry that this is such a bikeshed heaven ;-)

If there's going to be another version, please fix the commit message
while at it. "Now sent with git send-email" is useless for posterity.

BR,
Jani.


> -Daniel
>
>> +
>>  /* 8 bpp RGB */
>>  #define DRM_FORMAT_RGB332	fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
>>  #define DRM_FORMAT_BGR233	fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
>> -- 
>> 2.9.3
>>
Eric Engestrom Jan. 4, 2017, 10:19 a.m. UTC | #3 
On Wednesday, 2017-01-04 11:06:09 +0200, Jani Nikula wrote:
> On Wed, 04 Jan 2017, Daniel Vetter <daniel@ffwll.ch> wrote:
> > On Tue, Jan 03, 2017 at 08:02:07PM +0100, Rainer Hochecker wrote:
> >> From: Rainer Hochecker <fernetmenta@online.de>
> >> 
> >> Now sent with git send-email:
> >> 
> >> Signed-off-by: Rainer Hochecker <fernetmenta@online.de>
> >> ---
> >>  include/uapi/drm/drm_fourcc.h | 7 +++++++
> >>  1 file changed, 7 insertions(+)
> >> 
> >> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> >> index a5890bf..f1ef9cb 100644
> >> --- a/include/uapi/drm/drm_fourcc.h
> >> +++ b/include/uapi/drm/drm_fourcc.h
> >> @@ -41,10 +41,17 @@ extern "C" {
> >>  /* 8 bpp Red */
> >>  #define DRM_FORMAT_R8		fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
> >>  
> >> +/* 16 bpp Red */
> >> +#define DRM_FORMAT_R16		fourcc_code('R', '1', '6', ' ') /* [15:0] R */
> >> +
> >>  /* 16 bpp RG */
> >>  #define DRM_FORMAT_RG88		fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
> >>  #define DRM_FORMAT_GR88		fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
> >>  
> >> +/* 32 bpp GR */
> >> +#define DRM_FORMAT_RG32		fourcc_code('R', 'G', '3', '2') /* [31:0] G:R 16:16 little endian */

Also, s/G:R/R:G/ in the comment above :)

> >> +#define DRM_FORMAT_GR32		fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
> >
> > Now the define's name is inconsistent, since that would suggest a 5 bpp
> > format with 3 bits for R and 2 bits for G. I think what we want here for
> > consistency is _RG16_16 and _GR16_16, along the lines of what Ville
> > suggested.
> >
> > Sorry that this is such a bikeshed heaven ;-)
> 
> If there's going to be another version, please fix the commit message
> while at it. "Now sent with git send-email" is useless for posterity.
> 
> BR,
> Jani.
> 
> 
> > -Daniel
> >
> >> +
> >>  /* 8 bpp RGB */
> >>  #define DRM_FORMAT_RGB332	fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
> >>  #define DRM_FORMAT_BGR233	fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
> >> -- 
> >> 2.9.3
> >> 
> 
> -- 
> Jani Nikula, Intel Open Source Technology Center
diff mbox

Patch

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index a5890bf..f1ef9cb 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -41,10 +41,17 @@  extern "C" {
 /* 8 bpp Red */
 #define DRM_FORMAT_R8		fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
 
+/* 16 bpp Red */
+#define DRM_FORMAT_R16		fourcc_code('R', '1', '6', ' ') /* [15:0] R */
+
 /* 16 bpp RG */
 #define DRM_FORMAT_RG88		fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
 #define DRM_FORMAT_GR88		fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
 
+/* 32 bpp GR */
+#define DRM_FORMAT_RG32		fourcc_code('R', 'G', '3', '2') /* [31:0] G:R 16:16 little endian */
+#define DRM_FORMAT_GR32		fourcc_code('G', 'R', '3', '2') /* [31:0] G:R 16:16 little endian */
+
 /* 8 bpp RGB */
 #define DRM_FORMAT_RGB332	fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
 #define DRM_FORMAT_BGR233	fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */