From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC36AC04AAB for ; Wed, 8 May 2019 11:38:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E5BB20675 for ; Wed, 8 May 2019 11:38:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="H4L+4rhn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728031AbfEHLiP (ORCPT ); Wed, 8 May 2019 07:38:15 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:36916 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727622AbfEHLiO (ORCPT ); Wed, 8 May 2019 07:38:14 -0400 Received: by mail-wm1-f67.google.com with SMTP id y5so2832664wma.2 for ; Wed, 08 May 2019 04:38:13 -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=+SyLCGKQZVZPU6RL6iNDUpQzPqwKhYQ4Nyrk4MwksBs=; b=H4L+4rhnt7nJyxUySG1D23U7M9pA5N7CS039VwgPFeog8c1Klhg8iWTRDlj8w6WBt2 5sItGQ+3VIqHal+WYVg6wp43BZm7t3BsDCDWbHZseIrR7Mh87mv/BdxJPCvcr2tsQy2q iS1Juki+Y76Q1bIFy1P+jHdFX5Wk1JvuKUQ53yaYwroRfFYA5gvxX7WsLQVC6j9bTINR KdENWoXqhrW86MJ2rtpD16eomAyw31yBAtLUK4QM1LPlSJCl+/Ho01vS8Lw7RuCHLeOw EF/I6soUFl2NVdwNrms2Brv8QFNqb5xdF+0ReSgAn4HgchKwtwWaTlelpv0+zpjyWB35 Z/OQ== 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=+SyLCGKQZVZPU6RL6iNDUpQzPqwKhYQ4Nyrk4MwksBs=; b=LIWhNqtYI3+KtZLSYQThegWpi/azmAN0CJMD8RlUtDwbUFsSzBiNq8bpCnp1FDEBkZ KjfXRElPjy5czErDW4c/YidMcp8u8EwyTK/p1b6h0nOMqtNDfMHGXmmZU4M/nsWlrQGI Gw8EMxa9gHo7RuaMPgfU55DrumNfgJTqwnAV0l1m4Op4KdCcJVZHww4QCJIQh242DyF9 5lIaoF/OCHRmOUxQBVnejK3u9+pWWbhAg7XNmhr1QFxKOUIdI6Ig8C6eukcQzMLiGp++ DhGrMWyahU78x+NhFCDjzzWUf6wJkp2l0ASCx5sKn5yNEq2DhHkx/vgm1ogfFmnysQN1 eMiA== X-Gm-Message-State: APjAAAWG4RA9ovHIp6ztiVgc+Edw49dZugVIFpEaGw2rUzVeYErShHuT A39HQiTjIEAWGT4gymTJbdHh+7FM3eI= X-Google-Smtp-Source: APXvYqxV6O4YkH8fOkqEwIvXPC5Y08lfZOvf0U3VsyRoVLRXZ/PfErlzIJjSyNQbIzcFPxlHt/buSQ== X-Received: by 2002:a1c:eb07:: with SMTP id j7mr2656906wmh.138.1557315493184; Wed, 08 May 2019 04:38:13 -0700 (PDT) Received: from localhost.localdomain ([37.157.136.206]) by smtp.gmail.com with ESMTPSA id r2sm36077322wrr.65.2019.05.08.04.38.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 08 May 2019 04:38:12 -0700 (PDT) From: Stanimir Varbanov To: linux-media@vger.kernel.org Cc: Mauro Carvalho Chehab , Hans Verkuil , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Sakari Ailus , Stanimir Varbanov Subject: [PATCH v2] v4l: Add source event change for bit-depth Date: Wed, 8 May 2019 14:37:59 +0300 Message-Id: <20190508113759.19168-1-stanimir.varbanov@linaro.org> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- Change since v1: s/BITDEPTH/BIT_DEPTH 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..f7782cbddc5f 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_BIT_DEPTH`` + - 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..68ae00d7450f 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_BIT_DEPTH 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 1050a75fb7ef..ecfdbaa60b05 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2287,6 +2287,7 @@ struct v4l2_event_frame_sync { }; #define V4L2_EVENT_SRC_CH_RESOLUTION (1 << 0) +#define V4L2_EVENT_SRC_CH_BIT_DEPTH (1 << 1) struct v4l2_event_src_change { __u32 changes; -- 2.17.1