linux-kernel - Re: [PATCH v2 0/2] Document memory-to-memory video codec interfaces

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Date:   Mon, 22 Oct 2018 16:41:33 +0100
From:   Hans Verkuil <hverkuil@...all.nl>
To:     Tomasz Figa <tfiga@...omium.org>, linux-media@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Paweł Ościak <posciak@...omium.org>,
        Alexandre Courbot <acourbot@...omium.org>,
        Kamil Debski <kamil@...as.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Jeongtae Park <jtp.park@...sung.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Todor Tomov <todor.tomov@...aro.org>,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dave.stevenson@...pberrypi.org,
        Ezequiel Garcia <ezequiel@...labora.com>,
        Maxime Jourdan <maxi.jourdan@...adoo.fr>
Subject: Re: [PATCH v2 0/2] Document memory-to-memory video codec interfaces

Hi Tomasz, Alexandre,

Thank you for all your work! Much appreciated.

I've applied both the stateful and stateless patches on top of the request_api branch
and made the final result available here:

https://hverkuil.home.xs4all.nl/request-api/

Tomasz, I got two warnings when building the doc tree, the patch below fixes it.

Regards,

	Hans

Signed-off-by: Hans Verkuil <hans.verkuil@...co.com>

diff --git a/Documentation/media/uapi/v4l/dev-decoder.rst b/Documentation/media/uapi/v4l/dev-decoder.rst
index 09c7a6621b8e..5522453ac39f 100644
--- a/Documentation/media/uapi/v4l/dev-decoder.rst
+++ b/Documentation/media/uapi/v4l/dev-decoder.rst
@@ -972,11 +972,11 @@ sequence was started.

    .. warning::

-   The sentence can be only initiated if both ``OUTPUT`` and ``CAPTURE`` queues
-   are streaming. For compatibility reasons, the call to
-   :c:func:`VIDIOC_DECODER_CMD` will not fail even if any of the queues is not
-   streaming, but at the same time it will not initiate the `Drain` sequence
-   and so the steps described below would not be applicable.
+      The sentence can be only initiated if both ``OUTPUT`` and ``CAPTURE`` queues
+      are streaming. For compatibility reasons, the call to
+      :c:func:`VIDIOC_DECODER_CMD` will not fail even if any of the queues is not
+      streaming, but at the same time it will not initiate the `Drain` sequence
+      and so the steps described below would not be applicable.

 2. Any ``OUTPUT`` buffers queued by the client before the
    :c:func:`VIDIOC_DECODER_CMD` was issued will be processed and decoded as
diff --git a/Documentation/media/uapi/v4l/dev-encoder.rst b/Documentation/media/uapi/v4l/dev-encoder.rst
index 41139e5e48eb..7f49a7149067 100644
--- a/Documentation/media/uapi/v4l/dev-encoder.rst
+++ b/Documentation/media/uapi/v4l/dev-encoder.rst
@@ -448,11 +448,11 @@ sequence was started.

    .. warning::

-   The sentence can be only initiated if both ``OUTPUT`` and ``CAPTURE`` queues
-   are streaming. For compatibility reasons, the call to
-   :c:func:`VIDIOC_ENCODER_CMD` will not fail even if any of the queues is not
-   streaming, but at the same time it will not initiate the `Drain` sequence
-   and so the steps described below would not be applicable.
+      The sentence can be only initiated if both ``OUTPUT`` and ``CAPTURE`` queues
+      are streaming. For compatibility reasons, the call to
+      :c:func:`VIDIOC_ENCODER_CMD` will not fail even if any of the queues is not
+      streaming, but at the same time it will not initiate the `Drain` sequence
+      and so the steps described below would not be applicable.

 2. Any ``OUTPUT`` buffers queued by the client before the
    :c:func:`VIDIOC_ENCODER_CMD` was issued will be processed and encoded as