From patchwork Wed May 8 11:37:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanimir Varbanov X-Patchwork-Id: 10935515 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 2161713AD for ; Wed, 8 May 2019 11:38:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 11B421FFE4 for ; Wed, 8 May 2019 11:38:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 05472284F5; Wed, 8 May 2019 11:38:19 +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 A5B411FFE4 for ; Wed, 8 May 2019 11:38:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728037AbfEHLiR (ORCPT ); Wed, 8 May 2019 07:38:17 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:36264 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727723AbfEHLiP (ORCPT ); Wed, 8 May 2019 07:38:15 -0400 Received: by mail-wm1-f66.google.com with SMTP id j187so2840873wmj.1 for ; Wed, 08 May 2019 04:38:14 -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=pVId39swBFAi7Aj9hhDkXAi4ppArteOD0EzULhIhW0bcXJW1XcJuEBUx86u5TY/IGU 2RTJ1Kod5TmspJNo7Y/WsKyulZEC3FVdnj0ns7yKDnU2Vx6p8tCwgJJTCjvAfFC7SAMu DkXtnxwt+9b6ZFqzwWIXbMoODEZCOKR7f6ij6mvWBljW7BwZthLU+m3xfj5a3NDTwRJi sU/6DFu01MOzPlwpfQuoNDuJCJK9mT5aYpAHh9TxxI4F1mP3CwMZLMoqBssaLY2vvlJo MvdfYxmudLWVwhdoTyHbNso1ltgb82FNKOpGV5D9Va1n+u9zN1O+LNLVkncvJDWOme+l RPBw== X-Gm-Message-State: APjAAAV6Y1uD5kP5/D20MNkaEa8npin4dBHVVhsaAEb4sAOliop0G65r j3tjLcUaXR2CJwY6cSjKIAagwfug9mg= 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-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 Acked-by: Sakari Ailus --- 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;