From patchwork Mon Jan 6 15:49:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanimir Varbanov X-Patchwork-Id: 11319613 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B00241398 for ; Mon, 6 Jan 2020 15:51:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C9282146E for ; Mon, 6 Jan 2020 15:51:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="J76Ae++/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727299AbgAFPu6 (ORCPT ); Mon, 6 Jan 2020 10:50:58 -0500 Received: from mail-lj1-f194.google.com ([209.85.208.194]:43312 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727124AbgAFPuN (ORCPT ); Mon, 6 Jan 2020 10:50:13 -0500 Received: by mail-lj1-f194.google.com with SMTP id a13so51382687ljm.10 for ; Mon, 06 Jan 2020 07:50:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=8jyLbT5ZrfIAz+8+u887A7NjsCYNMRlyxpPZgdnDr9I=; b=J76Ae++/WxURgBvDKLrnufgbFrfqNEw/2JO35drnSu7Igq/d1LO17a5LccG6T0t/jz M22b99qTxoHBloxxpLTly1KoHV06T5hsChQWSvPEQkPlzxK4e1YZ1CP31YJqFAzL+mKa gGZnnSvbrmfK3v/M0HnfdfKhgpiCuJ0FTR89a3XqRKGqLXRZCUwV7+fUjgT7osyeUZp6 VdJf9YX5xNcdR4lTLJtO6vrN5JqEGA6ulOh6jsEGltEwZ2HeEdT3/dHbF/abd3SmmnRy tZ8jJ40f/Y3KbYi5fwxoyxbrZ72CdRnDWxP1b81M4vNCAFCKM8trPu7Hj0pw17ktf5zm eZ/A== 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:in-reply-to :references; bh=8jyLbT5ZrfIAz+8+u887A7NjsCYNMRlyxpPZgdnDr9I=; b=sAZITXhA1W0mYf+Tei29S19tKssLgSeVyyUo3NfQZU0FsUwCPGD1U9fZ64/OaxDRH8 dsU/MfOiQ3EjfynxQvOxUruJPwwLYVIPXijtGdGiERvu6+CWtaDmFxODU4gqO9Eynnjy nHeJicDCWJeiztpWCdU4L7+EnaHoogE6BTgzdUAY5iXrIbhGLx+KLZAAvg+AcFrkUp94 MLn0arIpMyFY0nipbYfpuR0r2/gVMHJ8PdvttGQx8W1OFUazgDTi5VeBngprmLzC1dWD DU8nfGA5eZ+vAyDzZRuL5EJtjYbUyc8fIuplvbDfiuZRHvCQ3QLipj/Y9NGvzaZLxT0m aVhA== X-Gm-Message-State: APjAAAVeVX02VmifkGbnK5jSlGJPh94Ub6Pnq3sDt5AEbtaYAGEaqL6y cBYaWB7tFPVAQGjeYCv2pPqQzw== X-Google-Smtp-Source: APXvYqzdeqcPrPfa3OahLNFvB3qH0ZdnioHalWqNe4kQviZwx6hVI/OOIn4s59EvW9ql/N4yd/muJA== X-Received: by 2002:a2e:8316:: with SMTP id a22mr9810308ljh.141.1578325811164; Mon, 06 Jan 2020 07:50:11 -0800 (PST) Received: from localhost.localdomain ([37.157.136.193]) by smtp.gmail.com with ESMTPSA id x84sm29388259lfa.97.2020.01.06.07.50.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jan 2020 07:50:10 -0800 (PST) From: Stanimir Varbanov To: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org Cc: Vikash Garodia , dikshita@codeaurora.org, Stanimir Varbanov Subject: [PATCH v4 04/12] v4l: Add source event change for bit-depth Date: Mon, 6 Jan 2020 17:49:21 +0200 Message-Id: <20200106154929.4331-5-stanimir.varbanov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200106154929.4331-1-stanimir.varbanov@linaro.org> References: <20200106154929.4331-1-stanimir.varbanov@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This event indicate that the source color 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 color bit-depth is changed from 8 to 10bits or vice versa. Acked-by: Sakari Ailus Signed-off-by: Stanimir Varbanov --- Documentation/media/uapi/v4l/vidioc-dqevent.rst | 8 +++++++- Documentation/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst index 42659a3d1705..fad853d440cf 100644 --- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst +++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst @@ -402,7 +402,13 @@ call. that many Video Capture 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_COLOR_DEPTH`` + - 0x0002 + - This event gets triggered when color 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 cb6ccf91776e..209709114378 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -490,6 +490,7 @@ 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_COLOR_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 5f9357dcb060..1d349c9d57a7 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2332,6 +2332,7 @@ struct v4l2_event_frame_sync { }; #define V4L2_EVENT_SRC_CH_RESOLUTION (1 << 0) +#define V4L2_EVENT_SRC_CH_COLOR_DEPTH (1 << 1) struct v4l2_event_src_change { __u32 changes;