From patchwork Wed Dec 18 13:22:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanimir Varbanov X-Patchwork-Id: 11300739 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 233E36C1 for ; Wed, 18 Dec 2019 13:24:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 016AB24676 for ; Wed, 18 Dec 2019 13:24:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="jFgeMvSD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727265AbfLRNYE (ORCPT ); Wed, 18 Dec 2019 08:24:04 -0500 Received: from mail-lf1-f67.google.com ([209.85.167.67]:37116 "EHLO mail-lf1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727260AbfLRNYC (ORCPT ); Wed, 18 Dec 2019 08:24:02 -0500 Received: by mail-lf1-f67.google.com with SMTP id b15so1701108lfc.4 for ; Wed, 18 Dec 2019 05:24:01 -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=fdnv5G54kjVyBGm0/gl9gu7nvtpvFPt8yg5pxAgrcmE=; b=jFgeMvSDcZBktiP6w0iUj7kL8k5sQjm6mg9k/ps8khr63J+cX9pqqKQmBDnUrdI9gu OCDqRaWaj9TWeCld9YrmKJeFymYAvdTB+DMOFSYGWOT1lKPPM7PNz1+mL46/Oqo/zjec 2cQXB8kZqYvTvrRCRPTBbhecOeMDUyEG5ZQ6IhQVfhTDh4jd2+eqTBs0ska9ydwcQ2/g yb+sLpOS+M8i3V+i7FOHlvRywr1cc3y/66aqcbOg6LzLpc+o16HtsbWjAB2fNrLK2HMC 3Kobzz7C/Ljj7tZR6xXs/0wdvfzY0t8oZVh5uZib95O8vY3MDYE0V5pBEI7yG92n2z0A dCUQ== 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=fdnv5G54kjVyBGm0/gl9gu7nvtpvFPt8yg5pxAgrcmE=; b=DYCeFmnZM2CRjuxiBJWaSOC39XW6mlbNGY+x6F/xArueg9dPQJE66oh+ogrMw41gD3 9gItAgXrPN6hOkA+1v/hNd2ewSdVm4141oL2H0h1w4xA9MbUFSrrm36RNkiBu0kpm5Z1 cTp00lYvQiUCes6bxqEkrOPgXedTO2QLT9ey6Hpl6rl+Pr2jMuIb8AcWn85OuUYd92TC NI8V/nkqofhF0wb7UbdZDL0F/92o4yxN/diCRDmkxgZCumw7ujZBbtTH/rGrqjkUy/+g RW/JG17CB1oJa+sZzTFJ9vwYEMItZPZR4RIRXc0xxBMeONPBSniJtoAajvDeEkWWNVGT zL3A== X-Gm-Message-State: APjAAAVVkcIwdD/AA/wWCrxJTS1qplkjjI4i+JOKBNNJDmWnVrvLbDyS vFEwT+q9XDuQkWP6WCTiCE4Cwg== X-Google-Smtp-Source: APXvYqzqLzR+5orlUlMv3SgEe06Bkjy+mExbqQ1hrTsMjm2qdbczM8yt5qontFf1NTSwaNHUYQlyMA== X-Received: by 2002:a19:f006:: with SMTP id p6mr1719027lfc.94.1576675440344; Wed, 18 Dec 2019 05:24:00 -0800 (PST) Received: from localhost.localdomain ([37.157.136.193]) by smtp.gmail.com with ESMTPSA id z7sm1440667lfa.81.2019.12.18.05.23.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Dec 2019 05:23:59 -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 v2 04/12] v4l: Add source event change for bit-depth Date: Wed, 18 Dec 2019 15:22:43 +0200 Message-Id: <20191218132251.24161-5-stanimir.varbanov@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191218132251.24161-1-stanimir.varbanov@linaro.org> References: <20191218132251.24161-1-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 04481c717fee..2a5138ac6d25 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2307,6 +2307,7 @@ 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;