diff mbox series

[FFmpeg-devel,1/3] lavu/pix_fmt: add new pixel format x2rgb10

Message ID 1587455498-25260-1-git-send-email-fei.w.wang@intel.com
State Superseded
Headers show
Series [FFmpeg-devel,1/3] lavu/pix_fmt: add new pixel format x2rgb10 | expand

Checks

Context Check Description
andriy/default pending
andriy/make success Make finished
andriy/make_fate fail Make fate failed

Commit Message

Fei Wang April 21, 2020, 7:51 a.m. UTC 
The format is packed RGB with each channel 10 bits available and
include 2 bits unused.

Signed-off-by: Fei Wang <fei.w.wang@intel.com>
---
 libavutil/pixdesc.c                      | 24 ++++++++++++++++++++++++
 libavutil/pixfmt.h                       |  3 +++
 libavutil/version.h                      |  2 +-
 tests/ref/fate/filter-pixdesc-x2rgb10le  |  1 +
 tests/ref/fate/filter-pixfmts-copy       |  1 +
 tests/ref/fate/filter-pixfmts-crop       |  1 +
 tests/ref/fate/filter-pixfmts-field      |  1 +
 tests/ref/fate/filter-pixfmts-fieldorder |  1 +
 tests/ref/fate/filter-pixfmts-hflip      |  1 +
 tests/ref/fate/filter-pixfmts-il         |  1 +
 tests/ref/fate/filter-pixfmts-null       |  1 +
 tests/ref/fate/filter-pixfmts-pad        |  1 +
 tests/ref/fate/filter-pixfmts-scale      |  1 +
 tests/ref/fate/filter-pixfmts-transpose  |  1 +
 tests/ref/fate/filter-pixfmts-vflip      |  1 +
 tests/ref/fate/sws-pixdesc-query         | 11 +++++++++++
 16 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 tests/ref/fate/filter-pixdesc-x2rgb10le

Comments

Hendrik Leppkes April 21, 2020, 8:07 a.m. UTC | #1 
On Tue, Apr 21, 2020 at 9:53 AM Fei Wang <fei.w.wang@intel.com> wrote:
>
> The format is packed RGB with each channel 10 bits available and
> include 2 bits unused.
>

The name of this pix_fmt seems very confusing, and the entire format
seems very specific. What is such a packed RGB format really good for
in ffmpeg?

- Hendrik
Fei Wang April 22, 2020, 2:32 a.m. UTC | #2 
> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> Hendrik Leppkes
> Sent: Tuesday, April 21, 2020 4:08 PM
> To: FFmpeg development discussions and patches <ffmpeg-
> devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH 1/3] lavu/pix_fmt: add new pixel format
> x2rgb10
> 
> On Tue, Apr 21, 2020 at 9:53 AM Fei Wang <fei.w.wang@intel.com> wrote:
> >
> > The format is packed RGB with each channel 10 bits available and
> > include 2 bits unused.
> >
> 
> The name of this pix_fmt seems very confusing, and the entire format seems
> very specific. What is such a packed RGB format really good for in ffmpeg?
This format is named as X2R10G10B10 in libva, but I think X2RGB10 is more
concise. There is similar format name defined in Gstreamer like RGB10A2.
Because there are lots of Codec/Filter based on third-party library in ffmpeg, while
in these library they may support some specific format like P010/Y210/Y410.., so in
Ffmpeg side it should support this kinds of formats first, at least the definition. 
> 
> - Hendrik
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> 
> To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org
> with subject "unsubscribe".
Vittorio Giovara April 22, 2020, 3:02 a.m. UTC | #3 
On Tue, Apr 21, 2020 at 10:32 PM Wang, Fei W <fei.w.wang@intel.com> wrote:

>
>
> > -----Original Message-----
> > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> > Hendrik Leppkes
> > Sent: Tuesday, April 21, 2020 4:08 PM
> > To: FFmpeg development discussions and patches <ffmpeg-
> > devel@ffmpeg.org>
> > Subject: Re: [FFmpeg-devel] [PATCH 1/3] lavu/pix_fmt: add new pixel
> format
> > x2rgb10
> >
> > On Tue, Apr 21, 2020 at 9:53 AM Fei Wang <fei.w.wang@intel.com> wrote:
> > >
> > > The format is packed RGB with each channel 10 bits available and
> > > include 2 bits unused.
> > >
> >
> > The name of this pix_fmt seems very confusing, and the entire format
> seems
> > very specific. What is such a packed RGB format really good for in
> ffmpeg?
> This format is named as X2R10G10B10 in libva, but I think X2RGB10 is more
> concise. There is similar format name defined in Gstreamer like RGB10A2.
> Because there are lots of Codec/Filter based on third-party library in
> ffmpeg, while
> in these library they may support some specific format like
> P010/Y210/Y410.., so in
> Ffmpeg side it should support this kinds of formats first, at least the
> definition.
>

In my opinion, unless it's needed by a ffmpeg features or it's fully
supported in swscale so that ffmpeg users may use it, it should not go in.
Fei Wang April 22, 2020, 4:36 a.m. UTC | #4 
> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> Vittorio Giovara
> Sent: Wednesday, April 22, 2020 11:02 AM
> To: FFmpeg development discussions and patches <ffmpeg-
> devel@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH 1/3] lavu/pix_fmt: add new pixel format
> x2rgb10
> 
> On Tue, Apr 21, 2020 at 10:32 PM Wang, Fei W <fei.w.wang@intel.com>
> wrote:
> 
> >
> >
> > > -----Original Message-----
> > > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> > > Hendrik Leppkes
> > > Sent: Tuesday, April 21, 2020 4:08 PM
> > > To: FFmpeg development discussions and patches <ffmpeg-
> > > devel@ffmpeg.org>
> > > Subject: Re: [FFmpeg-devel] [PATCH 1/3] lavu/pix_fmt: add new pixel
> > format
> > > x2rgb10
> > >
> > > On Tue, Apr 21, 2020 at 9:53 AM Fei Wang <fei.w.wang@intel.com>
> wrote:
> > > >
> > > > The format is packed RGB with each channel 10 bits available and
> > > > include 2 bits unused.
> > > >
> > >
> > > The name of this pix_fmt seems very confusing, and the entire format
> > seems
> > > very specific. What is such a packed RGB format really good for in
> > ffmpeg?
> > This format is named as X2R10G10B10 in libva, but I think X2RGB10 is
> > more concise. There is similar format name defined in Gstreamer like
> RGB10A2.
> > Because there are lots of Codec/Filter based on third-party library in
> > ffmpeg, while in these library they may support some specific format
> > like P010/Y210/Y410.., so in Ffmpeg side it should support this kinds
> > of formats first, at least the definition.
> >
> 
> In my opinion, unless it's needed by a ffmpeg features or it's fully supported
> in swscale so that ffmpeg users may use it, it should not go in.
Yes, this format is need in ffmpeg-vaapi. And my another 2 patches is the 
implementation of swscale and ffmpeg-vaapi csc for this format.
> --
> Vittorio
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> 
> To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org
> with subject "unsubscribe".
Carl Eugen Hoyos April 22, 2020, 10:10 p.m. UTC | #5 
Am Mi., 22. Apr. 2020 um 04:32 Uhr schrieb Wang, Fei W <fei.w.wang@intel.com>:
>
> > From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
> > Hendrik Leppkes

> > Subject: Re: [FFmpeg-devel] [PATCH 1/3] lavu/pix_fmt: add new pixel format
> > x2rgb10
> >
> > On Tue, Apr 21, 2020 at 9:53 AM Fei Wang <fei.w.wang@intel.com> wrote:
> > >
> > > The format is packed RGB with each channel 10 bits available and
> > > include 2 bits unused.
> > >
> >
> > The name of this pix_fmt seems very confusing, and the entire format seems
> > very specific. What is such a packed RGB format really good for in ffmpeg?
>
> This format is named as X2R10G10B10 in libva, but I think X2RGB10 is more
> concise. There is similar format name defined in Gstreamer like RGB10A2.
> Because there are lots of Codec/Filter based on third-party library in ffmpeg, while
> in these library they may support some specific format like P010/Y210/Y410.., so in
> Ffmpeg side it should support this kinds of formats first, at least the definition.

Why don't you use AV_PIX_FMT_GBRP10?

Carl Eugen
diff mbox series

Patch

diff --git a/libavutil/pixdesc.c b/libavutil/pixdesc.c
index 9d61c52..23ec1ab 100644
--- a/libavutil/pixdesc.c
+++ b/libavutil/pixdesc.c
@@ -252,6 +252,30 @@  static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
         },
         .flags = AV_PIX_FMT_FLAG_RGB,
     },
+    [AV_PIX_FMT_X2RGB10LE] = {
+        .name = "x2rgb10le",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            { 0, 4, 2, 4, 10, 3, 9, 2 }, 	   /* R */
+            { 0, 4, 1, 2, 10, 3, 9, 3 }, 	   /* G */
+            { 0, 4, 0, 0, 10, 3, 9, 4 }, 	   /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_X2RGB10BE] = {
+        .name = "x2rgb10be",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            { 0, 4, 0, 4, 10, 3, 9, 2 }, 	   /* R */
+            { 0, 4, 1, 2, 10, 3, 9, 3 }, 	   /* G */
+            { 0, 4, 2, 0, 10, 3, 9, 4 }, 	   /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BE,
+    },
     [AV_PIX_FMT_YUV422P] = {
         .name = "yuv422p",
         .nb_components = 3,
diff --git a/libavutil/pixfmt.h b/libavutil/pixfmt.h
index 1c625cf..71058d7 100644
--- a/libavutil/pixfmt.h
+++ b/libavutil/pixfmt.h
@@ -358,6 +358,8 @@  enum AVPixelFormat {
     AV_PIX_FMT_Y210BE,    ///< packed YUV 4:2:2 like YUYV422, 20bpp, data in the high bits, big-endian
     AV_PIX_FMT_Y210LE,    ///< packed YUV 4:2:2 like YUYV422, 20bpp, data in the high bits, little-endian
 
+    AV_PIX_FMT_X2RGB10LE,    ///< packed RGB 10:10:10, 30bpp, (msb)2X 10R 10G 10B(lsb), little-endian, X=unused/undefined
+    AV_PIX_FMT_X2RGB10BE,    ///< packed RGB 10:10:10, 30bpp, (msb)2X 10R 10G 10B(lsb), big-endian, X=unused/undefined
     AV_PIX_FMT_NB         ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
 };
 
@@ -447,6 +449,7 @@  enum AVPixelFormat {
 #define AV_PIX_FMT_P016       AV_PIX_FMT_NE(P016BE,  P016LE)
 
 #define AV_PIX_FMT_Y210       AV_PIX_FMT_NE(Y210BE,  Y210LE)
+#define AV_PIX_FMT_X2RGB10       AV_PIX_FMT_NE(X2RGB10BE, X2RGB10LE)
 
 /**
   * Chromaticity coordinates of the source primaries.
diff --git a/libavutil/version.h b/libavutil/version.h
index 70836a5..e4fa0a9 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@ 
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  56
-#define LIBAVUTIL_VERSION_MINOR  42
+#define LIBAVUTIL_VERSION_MINOR  43
 #define LIBAVUTIL_VERSION_MICRO 102
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/tests/ref/fate/filter-pixdesc-x2rgb10le b/tests/ref/fate/filter-pixdesc-x2rgb10le
new file mode 100644
index 0000000..94c8640
--- /dev/null
+++ b/tests/ref/fate/filter-pixdesc-x2rgb10le
@@ -0,0 +1 @@ 
+pixdesc-x2rgb10le    98d697ed4668daf535163d5e08c903bb
diff --git a/tests/ref/fate/filter-pixfmts-copy b/tests/ref/fate/filter-pixfmts-copy
index d19314b..c95ec33 100644
--- a/tests/ref/fate/filter-pixfmts-copy
+++ b/tests/ref/fate/filter-pixfmts-copy
@@ -76,6 +76,7 @@  rgba                b6e1b441c365e03b5ffdf9b7b68d9a0c
 rgba64be            ae2ae04b5efedca3505f47c4dd6ea6ea
 rgba64le            b91e1d77f799eb92241a2d2d28437b15
 uyvy422             3bcf3c80047592f2211fae3260b1b65d
+x2rgb10le           b0a0c8056521beeaa3fea4985ca87176
 xyz12be             a1ef56bf746d71f59669c28e48fc8450
 xyz12le             831ff03c1ba4ef19374686f16a064d8c
 ya16be              37c07787e544f900c87b853253bfc8dd
diff --git a/tests/ref/fate/filter-pixfmts-crop b/tests/ref/fate/filter-pixfmts-crop
index ab89d06..35bff2d 100644
--- a/tests/ref/fate/filter-pixfmts-crop
+++ b/tests/ref/fate/filter-pixfmts-crop
@@ -73,6 +73,7 @@  rgb8                9b364a8f112ad9459fec47a51cc03b30
 rgba                9488ac85abceaf99a9309eac5a87697e
 rgba64be            89910046972ab3c68e2a348302cc8ca9
 rgba64le            fea8ebfc869b52adf353778f29eac7a7
+x2rgb10le           5c0789f76a713f343c2ed42a371d441d
 xyz12be             cb4571f9aaa7b59f999ef327276104b7
 xyz12le             cd6aae8d26b18bdb4b9d068586276d91
 ya16be              a3d18014454942a96f15a49947c0c55d
diff --git a/tests/ref/fate/filter-pixfmts-field b/tests/ref/fate/filter-pixfmts-field
index 994026d..bf7347a 100644
--- a/tests/ref/fate/filter-pixfmts-field
+++ b/tests/ref/fate/filter-pixfmts-field
@@ -76,6 +76,7 @@  rgba                ee616262ca6d67b7ecfba4b36c602ce3
 rgba64be            23c8c0edaabe3eaec89ce69633fb0048
 rgba64le            dfdba4de4a7cac9abf08852666c341d3
 uyvy422             1c49e44ab3f060e85fc4a3a9464f045e
+x2rgb10le           a7a5dcdfe1d4b6bd71e40b01c735f144
 xyz12be             d2fa69ec91d3ed862f2dac3f8e7a3437
 xyz12le             02bccd5e0b6824779a1f848b0ea3e3b5
 ya16be              40403b5277364777e0671da4d38e01ac
diff --git a/tests/ref/fate/filter-pixfmts-fieldorder b/tests/ref/fate/filter-pixfmts-fieldorder
index 3d3eef3..33cf3cf 100644
--- a/tests/ref/fate/filter-pixfmts-fieldorder
+++ b/tests/ref/fate/filter-pixfmts-fieldorder
@@ -67,6 +67,7 @@  rgba                1fdf872a087a32cd35b80cc7be399578
 rgba64be            5598f44514d122b9a57c5c92c20bbc61
 rgba64le            b34e6e30621ae579519a2d91a96a0acf
 uyvy422             75de70e31c435dde878002d3f22b238a
+x2rgb10le           636c90498c64abba1cc0624c5209a61f
 xyz12be             15f5cda71de5fef9cec5e75e3833b6bc
 xyz12le             7be6c8781f38c21a6b8f602f62ca31e6
 ya16be              0f13e0f52586d172aaa07710fa3e8f31
diff --git a/tests/ref/fate/filter-pixfmts-hflip b/tests/ref/fate/filter-pixfmts-hflip
index 8712074..70a69c4 100644
--- a/tests/ref/fate/filter-pixfmts-hflip
+++ b/tests/ref/fate/filter-pixfmts-hflip
@@ -73,6 +73,7 @@  rgb8                68a3a575badadd9e4f90226209f11699
 rgba                51961c723ea6707e0a410cd3f21f15d3
 rgba64be            c910444019f4cfbf4d995227af55da8d
 rgba64le            0c810d8b3a6bca10321788e1cb145340
+x2rgb10le           9f99dce306383daf25cd1542b2517fef
 xyz12be             25f90259ff8a226befdaec3dfe82996e
 xyz12le             926c0791d59aaff61b2778e8ada3316d
 ya16be              d5b342355bdd9e3197e01b13b7c6301e
diff --git a/tests/ref/fate/filter-pixfmts-il b/tests/ref/fate/filter-pixfmts-il
index 7f1c339..994a051 100644
--- a/tests/ref/fate/filter-pixfmts-il
+++ b/tests/ref/fate/filter-pixfmts-il
@@ -75,6 +75,7 @@  rgba                625d8f4bd39c4bdbf61eb5e4713aecc9
 rgba64be            db70d33aa6c06f3e0a1c77bd11284261
 rgba64le            a8a2daae04374a27219bc1c890204007
 uyvy422             d6ee3ca43356d08c392382b24b22cda5
+x2rgb10le           a01ea7dd339e028780e04971012d826d
 xyz12be             7c7d54c55f136cbbc50b18029f3be0b3
 xyz12le             090ba6b1170baf2b1358b43b971d33b0
 ya16be              7bc720918bc0132e9717acbde89874e0
diff --git a/tests/ref/fate/filter-pixfmts-null b/tests/ref/fate/filter-pixfmts-null
index d19314b..c95ec33 100644
--- a/tests/ref/fate/filter-pixfmts-null
+++ b/tests/ref/fate/filter-pixfmts-null
@@ -76,6 +76,7 @@  rgba                b6e1b441c365e03b5ffdf9b7b68d9a0c
 rgba64be            ae2ae04b5efedca3505f47c4dd6ea6ea
 rgba64le            b91e1d77f799eb92241a2d2d28437b15
 uyvy422             3bcf3c80047592f2211fae3260b1b65d
+x2rgb10le           b0a0c8056521beeaa3fea4985ca87176
 xyz12be             a1ef56bf746d71f59669c28e48fc8450
 xyz12le             831ff03c1ba4ef19374686f16a064d8c
 ya16be              37c07787e544f900c87b853253bfc8dd
diff --git a/tests/ref/fate/filter-pixfmts-pad b/tests/ref/fate/filter-pixfmts-pad
index 56482cf..9a5db82 100644
--- a/tests/ref/fate/filter-pixfmts-pad
+++ b/tests/ref/fate/filter-pixfmts-pad
@@ -28,6 +28,7 @@  nv42                1738ad3c31c6c16e17679f5b09ce4677
 rgb0                78d500c8361ab6423a4826a00268c908
 rgb24               17f9e2e0c609009acaf2175c42d4a2a5
 rgba                b157c90191463d34fb3ce77b36c96386
+x2rgb10le           c240f8a8dfa647c57c0974d061c9652a
 xyz12le             85abf80b77a9236a76ba0b00fcbdea2d
 ya16le              940fafa240b9916de5f73cb20a552f24
 ya8                 5fc0f471207ddf7aa01b07027d56b672
diff --git a/tests/ref/fate/filter-pixfmts-scale b/tests/ref/fate/filter-pixfmts-scale
index 89d3f58..3ae17b3 100644
--- a/tests/ref/fate/filter-pixfmts-scale
+++ b/tests/ref/fate/filter-pixfmts-scale
@@ -76,6 +76,7 @@  rgba                85bb5d03cea1c6e8002ced3373904336
 rgba64be            ee73e57923af984b31cc7795d13929da
 rgba64le            783d2779adfafe3548bdb671ec0de69e
 uyvy422             aeb4ba4f9f003ae21f6d18089198244f
+x2rgb10le           591fe7942544c8fc40e5d30e0e589f49
 xyz12be             c7ba8345998c0141ddc079cdd29b1a40
 xyz12le             95f5d3a0de834cc495c9032a14987cde
 ya16be              20d4842899d61068f5fb6af478bf26a6
diff --git a/tests/ref/fate/filter-pixfmts-transpose b/tests/ref/fate/filter-pixfmts-transpose
index e4a170f..2b8381a 100644
--- a/tests/ref/fate/filter-pixfmts-transpose
+++ b/tests/ref/fate/filter-pixfmts-transpose
@@ -72,6 +72,7 @@  rgb8                c90feb30c3c9391ef5f470209d7b7a15
 rgba                4d76a9542143752a4ac30f82f88f68f1
 rgba64be            a60041217f4c0cd796d19d3940a12a41
 rgba64le            ad47197774858858ae7b0c177dffa459
+x2rgb10le           a64d4d901b09bea9d59eda58be5e88ff
 xyz12be             68e5cba640f6e4ef72dff950e88b5342
 xyz12le             8b6b6a6db4d7561e80db88ccaecce7a9
 ya16be              3e161cb5f225922a80fefdc9cc02a4f9
diff --git a/tests/ref/fate/filter-pixfmts-vflip b/tests/ref/fate/filter-pixfmts-vflip
index 2522c84..812e2d5 100644
--- a/tests/ref/fate/filter-pixfmts-vflip
+++ b/tests/ref/fate/filter-pixfmts-vflip
@@ -76,6 +76,7 @@  rgba                c1a5908572737f2ae1e5d8218af65f4b
 rgba64be            17e6273323b5779b5f3f775f150c1011
 rgba64le            48f45b10503b7dd140329c3dd0d54c98
 uyvy422             3a237e8376264e0cfa78f8a3fdadec8a
+x2rgb10le           332a6f5f5012008a562cb031836da028
 xyz12be             810644e008deb231850d779aaa27cc7e
 xyz12le             829701db461b43533cf9241e0743bc61
 ya16be              55b1dbbe4d56ed0d22461685ce85520d
diff --git a/tests/ref/fate/sws-pixdesc-query b/tests/ref/fate/sws-pixdesc-query
index bc9a0d8..c3cccfa 100644
--- a/tests/ref/fate/sws-pixdesc-query
+++ b/tests/ref/fate/sws-pixdesc-query
@@ -57,6 +57,8 @@  isNBPS:
   nv20le
   p010be
   p010le
+  x2rgb10be
+  x2rgb10le
   xyz12be
   xyz12le
   y210be
@@ -141,6 +143,7 @@  isBE:
   rgb555be
   rgb565be
   rgba64be
+  x2rgb10be
   xyz12be
   y210be
   ya16be
@@ -436,6 +439,8 @@  isRGB:
   rgb8
   rgba64be
   rgba64le
+  x2rgb10be
+  x2rgb10le
 
 Gray:
   gray
@@ -582,6 +587,8 @@  AnyRGB:
   rgb8
   rgba64be
   rgba64le
+  x2rgb10be
+  x2rgb10le
 
 ALPHA:
   ayuv64be
@@ -689,6 +696,8 @@  Packed:
   rgba64le
   uyvy422
   uyyvyy411
+  x2rgb10be
+  x2rgb10le
   xyz12be
   xyz12le
   y210be
@@ -853,6 +862,8 @@  PackedRGB:
   rgb8
   rgba64be
   rgba64le
+  x2rgb10be
+  x2rgb10le
 
 PlanarRGB:
   gbrap