[PATCH v3 3/9] DocBook/v4l: Add compressed video formats used on MT8173 codec driver
From: Wu-Cheng Li 李務誠 <hidden>
Date: 2016-07-12 08:16:41
Also in:
linux-devicetree, linux-media, linux-mediatek, lkml
On Mon, Jul 11, 2016 at 10:56 AM, tiffany lin [off-list ref] wrote:
Hi Hans, On Fri, 2016-07-08 at 12:23 +0200, Hans Verkuil wrote:quoted
On 05/30/2016 02:29 PM, Tiffany Lin wrote:quoted
Add V4L2_PIX_FMT_MT21 documentation Signed-off-by: Tiffany Lin <tiffany.lin@mediatek.com> --- Documentation/DocBook/media/v4l/pixfmt.xml | 6 ++++++ 1 file changed, 6 insertions(+)diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml index 5a08aee..d40e0ce 100644 --- a/Documentation/DocBook/media/v4l/pixfmt.xml +++ b/Documentation/DocBook/media/v4l/pixfmt.xml@@ -1980,6 +1980,12 @@ array. Anything what's in between the UYVY lines is JPEG data and should be concatenated to form the JPEG stream. </para> </entry> </row> + <row id="V4L2_PIX_FMT_MT21"> + <entry><constant>V4L2_PIX_FMT_MT21</constant></entry> + <entry>'MT21'</entry> + <entry>Compressed two-planar YVU420 format used by Mediatek MT8173 + codec driver.</entry>Can you give a few more details? The encoder driver doesn't seem to produce this format, so who is creating this? Where is this format documented?
Decoder hardware produces MT21 (compressed). Image processor can convert it to a format that can be input of display driver. Tiffany. When do you plan to upstream image processor (mtk-mdp)?
It can be as input format for encoder, MDP and display drivers in our platform.
I remember display driver can only accept uncompressed MT21. Right? Basically V4L2_PIX_FMT_MT21 is compressed and is like an opaque format. It's not usable until it's decompressed and converted by image processor.
This private format is only available in our platform. So I put it in "Reserved Format Identifiers" sections. best regards, Tiffanyquoted
Regards, Hansquoted
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