lkml.org 
[lkml]   [2019]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v6 0/5] HEVC/H.265 stateless support for V4L2 and Cedrus
From
Date
On 7/22/19 3:17 PM, Paul Kocialkowski wrote:
> Hi,
>
> Any feedback on this series? I think it was pretty much ready for merge
> regarding the comments received so far.
>
> I could craft a rebased v7, with or without additional changes, if needed.

Just gave feedback. A v7 is needed in any case since it needs to be rebased.

Regards,

Hans

>
> What do you think?
>
> Cheers,
>
> Paul
>
> On Fri 14 Jun 19, 16:38, Paul Kocialkowski wrote:
>> This is early support for HEVC/H.265 stateless decoding in V4L2,
>> including both definitions and driver support for the Cedrus VPU
>> driver, which concerns Allwinner devices.
>>
>> A specific pixel format is introduced for the HEVC slice format and
>> controls are provided to pass the bitstream metadata to the decoder.
>> Some bitstream extensions are intentionally not supported at this point.
>>
>> Since this is the first proposal for stateless HEVC/H.265 support in
>> V4L2, reviews and comments about the controls definitions are
>> particularly welcome.
>>
>> On the Cedrus side, the H.265 implementation covers frame pictures
>> with both uni-directional and bi-direction prediction modes (P/B
>> slices). Field pictures (interleaved), scaling lists and 10-bit output
>> are not supported at this point.
>>
>> This series is based upon the following series:
>> * media: cedrus: Add H264 decoding support
>>
>> Changes since v5:
>> * Rebased atop latest next media tree;
>> * Moved to flags instead of u8 fields;
>> * Added padding to ensure 64-bit alignment
>> (tested with GDB on 32 and 64-bit architectures);
>> * Reworked cedrus H.265 driver support a bit for flags;
>> * Split off codec-specific control validation and init;
>> * Added HEVC controls fields cleanup at std_validate to allow reliable
>> control comparison with memcmp;
>> * Fixed various misc reported mistakes.
>>
>> Changes since v4:
>> * Rebased atop latest H.254 series.
>>
>> Changes since v3:
>> * Updated commit messages;
>> * Updated CID base to avoid conflicts;
>> * Used cpu_to_le32 for packed le32 data;
>> * Fixed misc minor issues in the drive code;
>> * Made it clear in the docs that the API will evolve;
>> * Made the pixfmt private and split commits about it.
>>
>> Changes since v2:
>> * Moved headers to non-public API;
>> * Added H265 capability for A64 and H5;
>> * Moved docs to ext-ctrls-codec.rst;
>> * Mentionned sections of the spec in the docs;
>> * Added padding to control structures for 32-bit alignment;
>> * Made write function use void/size in bytes;
>> * Reduced the number of arguments to helpers when possible;
>> * Removed PHYS_OFFSET since we already set PFN_OFFSET;
>> * Added comments where suggested;
>> * Moved to timestamp for references instead of index;
>> * Fixed some style issues reported by checkpatch.
>>
>> Changes since v1:
>> * Added a H.265 capability to whitelist relevant platforms;
>> * Switched over to tags instead of buffer indices in the DPB
>> * Declared variable in their reduced scope as suggested;
>> * Added the H.265/HEVC spec to the biblio;
>> * Used in-doc references to the spec and the required APIs;
>> * Removed debugging leftovers.
>>
>> Cheers!
>>
>> Paul Kocialkowski (5):
>> media: v4l2-ctrls: Split off MPEG-2 controls validation
>> media: v4l2-ctrls: Split off MPEG-2 controls initialization
>> media: v4l: Add definitions for the HEVC slice controls
>> media: pixfmt: Document the HEVC slice pixel format
>> media: cedrus: Add HEVC/H.265 decoding support
>>
>> Documentation/media/uapi/v4l/biblio.rst | 9 +
>> .../media/uapi/v4l/ext-ctrls-codec.rst | 474 +++++++++++++-
>> .../media/uapi/v4l/pixfmt-compressed.rst | 21 +
>> .../media/uapi/v4l/vidioc-queryctrl.rst | 18 +
>> .../media/videodev2.h.rst.exceptions | 3 +
>> drivers/media/v4l2-core/v4l2-ctrls.c | 231 +++++--
>> drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
>> drivers/staging/media/sunxi/cedrus/Makefile | 2 +-
>> drivers/staging/media/sunxi/cedrus/cedrus.c | 31 +-
>> drivers/staging/media/sunxi/cedrus/cedrus.h | 18 +
>> .../staging/media/sunxi/cedrus/cedrus_dec.c | 9 +
>> .../staging/media/sunxi/cedrus/cedrus_h265.c | 616 ++++++++++++++++++
>> .../staging/media/sunxi/cedrus/cedrus_hw.c | 4 +
>> .../staging/media/sunxi/cedrus/cedrus_regs.h | 271 ++++++++
>> .../staging/media/sunxi/cedrus/cedrus_video.c | 10 +
>> include/media/hevc-ctrls.h | 197 ++++++
>> include/media/v4l2-ctrls.h | 7 +
>> 17 files changed, 1860 insertions(+), 62 deletions(-)
>> create mode 100644 drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>> create mode 100644 include/media/hevc-ctrls.h
>>
>> --
>> 2.21.0
>>
>

\
 
 \ /
  Last update: 2019-07-22 16:41    [W:0.092 / U:1.832 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site