From patchwork Mon Apr 15 15:27:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanimir Varbanov X-Patchwork-Id: 10901043 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B53021823 for ; Mon, 15 Apr 2019 15:27:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A266428756 for ; Mon, 15 Apr 2019 15:27:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 96670287A9; Mon, 15 Apr 2019 15:27:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4444628756 for ; Mon, 15 Apr 2019 15:27:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727682AbfDOP1p (ORCPT ); Mon, 15 Apr 2019 11:27:45 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:44208 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727252AbfDOP1l (ORCPT ); Mon, 15 Apr 2019 11:27:41 -0400 Received: by mail-wr1-f67.google.com with SMTP id y7so22484825wrn.11 for ; Mon, 15 Apr 2019 08:27:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=rdjAJXPyrM7EYkVn/ceLH5U36WNFw9E4wp8blYV0QHo=; b=uPREm/IxJb+c7rMXJxDJMh982pm80bSgcoyt+4c2rUBFlpqabZFtJjD6BD9+UA1KYt 5vx/eEY4H6WNCnZ7syHqiO/HD1lxfL6T2qPgACJJ2+3ukcVipDTNlRFdLF9A0MfT9RQd VK+vFaIWWjn4UZGgsm57pPhnBY+jOvuOMWXK6rBQdeBoRQFgChIkdPiHdAC7R7zSxSJO DuluM82P013xbllH6mjENEdWMT2jvkxI7+CLSpT3M5DXIqKhB/auctdGdjsjYdYhmHb7 9E2WNMOiOEFCZ+wvuK6sdApFgDEX5ZbhMpzKK63x7K7MuNNVMlL0E+mFwA2exa7/T8Yb YWWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=rdjAJXPyrM7EYkVn/ceLH5U36WNFw9E4wp8blYV0QHo=; b=f+HIVxXvz8tm0qAS6EmuSSZLL/LSUKa7wOC1cSbv57MmV/WCmnB9lhn7ZuQpmEOazV MjiwKh97+iJ59uUci6eYeO120llXSPbMehcm2uy43RCfUhgE4xL1C8gc6WU9Z9fupEUC YHR97Uqs3eWgfllKjsYqGkjgnVunFFi6cfmyYoqIfZEcP9Hgr3ZIvrP40w+/M3s1BVzk 4zR0Gfkk8cpWDjOgjHH1JHVrEg/WHLleGc4Eg+CH4p94uk52zkfUB/UZ9ECkZQyKi6M9 7bSxoc7lr0iA0uSguwnF14qnxgiUxDNZtla2DYqJnApsSOiK6IBIVO2P2+J+XdCdL4fV jDwQ== X-Gm-Message-State: APjAAAX4t+qef7UYwnLKx8m6WnsbRWBveP8P2YvJl3SWFKZUSDKnFbVI glK6IP89IDAj58fQDqxDZ1ixMnroWV0= X-Google-Smtp-Source: APXvYqzq2oXCRYl5tmmkNntvSrG3Vz2aLWwIA5L9wCn7RJswjP0FpZAI5Q66CmQ6uDdMWUxgqgx0oQ== X-Received: by 2002:adf:ea0b:: with SMTP id q11mr29187233wrm.233.1555342058968; Mon, 15 Apr 2019 08:27:38 -0700 (PDT) Received: from localhost.localdomain ([37.157.136.206]) by smtp.gmail.com with ESMTPSA id t74sm288818wmt.3.2019.04.15.08.27.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Apr 2019 08:27:38 -0700 (PDT) From: Stanimir Varbanov To: linux-media@vger.kernel.org Cc: Mauro Carvalho Chehab , Hans Verkuil , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Sakari Ailus , Stanimir Varbanov Subject: [PATCH] v4l: Add source event change for bit-depth Date: Mon, 15 Apr 2019 18:27:23 +0300 Message-Id: <20190415152723.2481-1-stanimir.varbanov@linaro.org> X-Mailer: git-send-email 2.17.1 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This event indicate that the source bit-depth is changed during run-time. The client must get the new format and re-allocate buffers for it. This can usually happens with video decoder (encoders) when the bit-stream depth is changed from 8 to 10bits or vice versa. Signed-off-by: Stanimir Varbanov --- Documentation/media/uapi/v4l/vidioc-dqevent.rst | 7 +++++++ Documentation/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 9 insertions(+) diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst index dea9c0cc00ab..92573d7c3e05 100644 --- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst +++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst @@ -397,6 +397,13 @@ call. that many devices are not able to recover from a temporary loss of signal and so restarting streaming I/O is required in order for the hardware to synchronize to the video signal. + * - ``V4L2_EVENT_SRC_CH_BITDEPTH`` + - 0x0002 + - This event gets triggered when bit-depth change is detected from a + video decoder. Applications will have to query the new pixel format + and re-negotiate the queue. In most cases the streaming must be stopped + and restarted (:ref:`VIDIOC_STREAMOFF ` followed by + :ref:`VIDIOC_STREAMON `). Return Value diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index 64d348e67df9..b4c35b347983 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -478,6 +478,7 @@ replace define V4L2_EVENT_CTRL_CH_FLAGS ctrl-changes-flags replace define V4L2_EVENT_CTRL_CH_RANGE ctrl-changes-flags replace define V4L2_EVENT_SRC_CH_RESOLUTION src-changes-flags +replace define V4L2_EVENT_SRC_CH_BITDEPTH src-changes-flags replace define V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ :c:type:`v4l2_event_motion_det` diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 496e6453450c..7398f42eac7d 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2271,6 +2271,7 @@ struct v4l2_event_frame_sync { }; #define V4L2_EVENT_SRC_CH_RESOLUTION (1 << 0) +#define V4L2_EVENT_SRC_CH_BITDEPTH (1 << 1) struct v4l2_event_src_change { __u32 changes;