[PATCH v6 1/5] media: uapi: videodev2: Add support for AV1 stateful decoder

[Deepa Guthyappa Madivalara]

Introduce a new pixel format, V4L2_PIX_FMT_AV1, to the
Video4Linux2(V4L2) API. This format is intended for AV1
bitstreams in stateful decoding/encoding workflows.
The fourcc code 'AV10' is used to distinguish
this format from the existing V4L2_PIX_FMT_AV1_FRAME,
which is used for stateless AV1 decoder implementation.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@xxxxxxxxxxxxx>
Signed-off-by: Deepa Guthyappa Madivalara <deepa.madivalara@xxxxxxxxxxxxxxxx>
---
 Documentation/userspace-api/media/v4l/pixfmt-compressed.rst | 8 ++++++++
 include/uapi/linux/videodev2.h                              | 1 +
 2 files changed, 9 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
index c7efb0465db6480fe35be8557728c196e0e530f4..6ca63f35b801b8aae142b69eddfaa549a5568a3f 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
@@ -275,6 +275,14 @@ Compressed Formats
         of macroblocks to decode a full corresponding frame to the matching
         capture buffer.
 
+    * .. _V4L2-PIX-FMT-AV1:
+
+      - ``V4L2_PIX_FMT_AV1``
+      - 'AV01'
+      - AV1 compressed video frame. This format is adapted for implementing AV1
+        pipeline. The decoder implements stateful video decoder and expects one
+        Temporal Unit per buffer from OBU Stream.
+        The encoder generates one Temporal Unit per buffer.
 .. raw:: latex
 
     \normalsize
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index becd08fdbddb857f8f2bf205d2164dc6e20e80b2..cf0b71bbe0f9d397e1e6c88433a0fc3ba11fb947 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -775,6 +775,7 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_H264_SLICE v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */
 #define V4L2_PIX_FMT_HEVC_SLICE v4l2_fourcc('S', '2', '6', '5') /* HEVC parsed slices */
 #define V4L2_PIX_FMT_AV1_FRAME v4l2_fourcc('A', 'V', '1', 'F') /* AV1 parsed frame */
+#define V4L2_PIX_FMT_AV1      v4l2_fourcc('A', 'V', '0', '1') /* AV1 */
 #define V4L2_PIX_FMT_SPK      v4l2_fourcc('S', 'P', 'K', '0') /* Sorenson Spark */
 #define V4L2_PIX_FMT_RV30     v4l2_fourcc('R', 'V', '3', '0') /* RealVideo 8 */
 #define V4L2_PIX_FMT_RV40     v4l2_fourcc('R', 'V', '4', '0') /* RealVideo 9 & 10 */

-- 
2.34.1