From patchwork Fri Sep 1 01:50:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gustavo Padovan X-Patchwork-Id: 9933297 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AF76A602F0 for ; Fri, 1 Sep 2017 01:51:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A246B27F8C for ; Fri, 1 Sep 2017 01:51:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A034E27F91; Fri, 1 Sep 2017 01:51:22 +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=-6.4 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM autolearn=ham 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 4DE3528390 for ; Fri, 1 Sep 2017 01:51:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751523AbdIABvI (ORCPT ); Thu, 31 Aug 2017 21:51:08 -0400 Received: from mail-qt0-f196.google.com ([209.85.216.196]:36308 "EHLO mail-qt0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751395AbdIABvH (ORCPT ); Thu, 31 Aug 2017 21:51:07 -0400 Received: by mail-qt0-f196.google.com with SMTP id e2so1005968qta.3 for ; Thu, 31 Aug 2017 18:51:07 -0700 (PDT) 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=g9jAF/93Z5anGm+BZIjU1HbGuO5ekOsOWh8/6dIwYIo=; b=XVYC6Yb3ObS4JsaZ9n2cxd6lD0QTLG4UQ+RoJOVhyF53Tw4ru/QIMWcGrg4jUwutmE 6XIDX55DlQJp5oKibraOxb2FIOpcnm4S3NEyp6HShxcDR+sOVqJanLYHogChsbsz2q/W cBZ2Ofk6bVsg4j6T3aE5fpXZa2Q/22zxWHDZ/iyVzX5aE/heTuE3p5ed4ufkghs5ngSv aPMvozRfbsQyROGrMquImzCy+VRiC6DB/Jy4GN0E3LdAG04zLGf5IEAEsWKD/rBK8vTx H9XLGFYMfskipsxv1d3vYq0a/E/PbronX7gDm5J3+4ye7oLdSA9T33GAR6uYN59qvr+Q Tl7g== X-Gm-Message-State: AHPjjUjd0M7G8M9DhnaLyoWBqdXYcTvDQSSt3R2npL74JQjfDJAS7Bh1 +Q6J6MoxeCBpbK/ODPk= X-Google-Smtp-Source: ADKCNb4E8Ciub2qxs033Cz7g7yEwpJzyVHggrSIaaj9XVcsKV3EJARkPyzAES1m5nWsUydxspzdLHw== X-Received: by 10.237.37.73 with SMTP id w9mr650276qtc.50.1504230666621; Thu, 31 Aug 2017 18:51:06 -0700 (PDT) Received: from localhost.localdomain ([187.10.21.246]) by smtp.gmail.com with ESMTPSA id o17sm6366232qkl.52.2017.08.31.18.51.03 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 31 Aug 2017 18:51:06 -0700 (PDT) From: Gustavo Padovan To: linux-media@vger.kernel.org Cc: Hans Verkuil , Mauro Carvalho Chehab , Shuah Khan , Gustavo Padovan Subject: [PATCH v2 06/14] [media] v4l: add V4L2_EVENT_BUF_QUEUED event Date: Thu, 31 Aug 2017 22:50:33 -0300 Message-Id: <20170901015041.7757-7-gustavo@padovan.org> X-Mailer: git-send-email 2.13.5 In-Reply-To: <20170901015041.7757-1-gustavo@padovan.org> References: <20170901015041.7757-1-gustavo@padovan.org> 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 From: Gustavo Padovan Add a new event the userspace can subscribe to receive notifications when a buffer is queued onto the driver. The event provides the index of the queued buffer. v2: - Add missing Documentation (Mauro) Signed-off-by: Gustavo Padovan --- Documentation/media/uapi/v4l/vidioc-dqevent.rst | 18 ++++++++++++++++++ Documentation/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 10 ++++++++++ 3 files changed, 29 insertions(+) diff --git a/Documentation/media/uapi/v4l/vidioc-dqevent.rst b/Documentation/media/uapi/v4l/vidioc-dqevent.rst index fcd9c933870d..362d82153312 100644 --- a/Documentation/media/uapi/v4l/vidioc-dqevent.rst +++ b/Documentation/media/uapi/v4l/vidioc-dqevent.rst @@ -78,6 +78,10 @@ call. - ``src_change`` - Event data for event V4L2_EVENT_SOURCE_CHANGE. * - + - struct :c:type:`v4l2_event_buf_queued` + - ``buf_queued`` + - Event data for event V4L2_EVENT_BUF_QUEUED. + * - - __u8 - ``data``\ [64] - Event data. Defined by the event type. The union should be used to @@ -337,6 +341,20 @@ call. each cell in the motion detection grid, then that all cells are automatically assigned to the default region 0. +.. c:type:: v4l2_event_buf_queued + +.. flat-table:: struct v4l2_event_buf_queued + :header-rows: 0 + :stub-columns: 0 + :widths: 1 1 2 + + * - __u32 + - ``index`` + - The index of the buffer that was queued to the driver. + + + +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}| .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}| diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index a5cb0a8686ac..4e014b1d0317 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -462,6 +462,7 @@ replace define V4L2_EVENT_CTRL event-type replace define V4L2_EVENT_FRAME_SYNC event-type replace define V4L2_EVENT_SOURCE_CHANGE event-type replace define V4L2_EVENT_MOTION_DET event-type +replace define V4L2_EVENT_BUF_QUEUED event-type replace define V4L2_EVENT_PRIVATE_START event-type replace define V4L2_EVENT_CTRL_CH_VALUE ctrl-changes-flags diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index e5abab9a908c..4a7a68ecc709 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2158,6 +2158,7 @@ struct v4l2_streamparm { #define V4L2_EVENT_FRAME_SYNC 4 #define V4L2_EVENT_SOURCE_CHANGE 5 #define V4L2_EVENT_MOTION_DET 6 +#define V4L2_EVENT_BUF_QUEUED 7 #define V4L2_EVENT_PRIVATE_START 0x08000000 /* Payload for V4L2_EVENT_VSYNC */ @@ -2210,6 +2211,14 @@ struct v4l2_event_motion_det { __u32 region_mask; }; +/** + * struct v4l2_event_buf_queued - buffer queued in the driver event + * @index: index of the buffer queued in the driver + */ +struct v4l2_event_buf_queued { + __u32 index; +}; + struct v4l2_event { __u32 type; union { @@ -2218,6 +2227,7 @@ struct v4l2_event { struct v4l2_event_frame_sync frame_sync; struct v4l2_event_src_change src_change; struct v4l2_event_motion_det motion_det; + struct v4l2_event_buf_queued buf_queued; __u8 data[64]; } u; __u32 pending;