Hi Diederik,
On 11/20/24 16:43, Diederik de Haas wrote:
On Wed Nov 20, 2024 at 12:01 PM CET, Hugues Fruchet wrote:
This patch adds the WebP picture decoding kernel uAPI.
This design is based on currently available VP8 API implementation and
aims to support the development of WebP stateless video codecs
on Linux.
Signed-off-by: Hugues Fruchet <hugues.fruchet@xxxxxxxxxxx>
---
Documentation/userspace-api/media/v4l/biblio.rst | 9 +++++++++
.../userspace-api/media/v4l/pixfmt-compressed.rst | 15 +++++++++++++++
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
include/uapi/linux/videodev2.h | 1 +
4 files changed, 26 insertions(+)
...
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
index 806ed73ac474..e664e70b0619 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
@@ -169,6 +169,21 @@ Compressed Formats
this pixel format. The output buffer must contain the appropriate number
of macroblocks to decode a full corresponding frame to the matching
capture buffer.
+ * .. _V4L2-PIX-FMT-WEBP-FRAME:
+
+ - ``V4L2_PIX_FMT_WEBP_FRAME``
+ - 'WEBP'
+ - WEBP VP8 parsed frame, excluding WEBP RIFF header, keeping only the VP8
+ bistream including the frame header, as extracted from the container.
s/bistream/bitstream/ ?
Thanks for noticing this typo, will fix in v3...
+ This format is adapted for stateless video decoders that implement a
+ WEBP pipeline with the :ref:`stateless_decoder`.
+ Metadata associated with the frame to decode is required to be passed
+ through the ``V4L2_CID_STATELESS_VP8_FRAME`` control.
+ See the :ref:`associated Codec Control IDs <v4l2-codec-stateless-vp8>`.
+ Exactly one output and one capture buffer must be provided for use with
+ this pixel format. The output buffer must contain the appropriate number
+ of macroblocks to decode a full corresponding frame to the matching
+ capture buffer.
* .. _V4L2-PIX-FMT-VP9:
BR,
Hugues.
