From patchwork Mon Mar 13 19:20:31 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo F. Padovan" X-Patchwork-Id: 40014 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cnVX1-0004KP-6E; Mon, 13 Mar 2017 19:21:23 +0000 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.84_2/mailfrontend-7) with esmtp id 1cnVWy-0006v0-2d; Mon, 13 Mar 2017 20:21:23 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753789AbdCMTVR (ORCPT + 1 other); Mon, 13 Mar 2017 15:21:17 -0400 Received: from mail-qk0-f194.google.com ([209.85.220.194]:33540 "EHLO mail-qk0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753213AbdCMTVA (ORCPT ); Mon, 13 Mar 2017 15:21:00 -0400 Received: by mail-qk0-f194.google.com with SMTP id j127so38543069qke.0; Mon, 13 Mar 2017 12:20:59 -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=AftrMmXev9cMI968ocDPk1tefyeVAmnjj10XnP+EM3U=; b=kYrKgeE2wn6u1+eyUx7el2Ixg2elXNQlqy4Z7D3zznfFyBZO5C7YIpS9s7oV4bwvRn HJtgMbC8LdUFJkvSdtTStkXQh6hFGeXGk7pTTqGQfRlv8zDKl5+nre6wC4R9xE0JVYMO OazDUBSsbUnKNsl7HCcRuHfWroC2mJrHV8X0iN5WAPbKUiWPz/vG+sCq+8CbWKpvtR0+ uubhLAZz5YerKvUhhB8ZBRE8vZSbtCDMqRnpQHlavp8Lh25dNdZ63nUBUS2DG38BdeQZ EjY2vR1mQmhi5OcSp9hxAKnuanI68zUE81BzfRwwGO+qf06JtytIheVqeUV9n5HueNdf letA== X-Gm-Message-State: AMke39mFyrnnZCBch4zbUCnvQwMzbXo1Mw0VNR/npfdVUb5pZfWsoQ0mn/uTp1bub+0TLg== X-Received: by 10.55.155.143 with SMTP id d137mr31446500qke.97.1489432859010; Mon, 13 Mar 2017 12:20:59 -0700 (PDT) Received: from localhost.localdomain ([179.159.9.225]) by smtp.gmail.com with ESMTPSA id a19sm12821047qta.48.2017.03.13.12.20.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 Mar 2017 12:20:58 -0700 (PDT) From: Gustavo Padovan To: linux-media@vger.kernel.org Cc: Hans Verkuil , Mauro Carvalho Chehab , Laurent Pinchart , Javier Martinez Canillas , linux-kernel@vger.kernel.org, Gustavo Padovan Subject: [RFC 06/10] [media] v4l: add V4L2_EVENT_BUF_QUEUED event Date: Mon, 13 Mar 2017 16:20:31 -0300 Message-Id: <20170313192035.29859-7-gustavo@padovan.org> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170313192035.29859-1-gustavo@padovan.org> References: <20170313192035.29859-1-gustavo@padovan.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2017.3.13.191217 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1200_1299 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, IN_REP_TO 0, LEGITIMATE_SIGNS 0, MSG_THREAD 0, MULTIPLE_REAL_RCPTS 0, NO_URI_HTTPS 0, REFERENCES 0, __ANY_URI 0, __CC_NAME 0, __CC_NAME_DIFF_FROM_ACC 0, __CC_REAL_NAMES 0, __HAS_CC_HDR 0, __HAS_FROM 0, __HAS_LIST_ID 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MIME_TEXT_P 0, __MIME_TEXT_P1 0, __MULTIPLE_RCPTS_CC_X2 0, __NO_HTML_TAG_RAW 0, __REFERENCES 0, __SANE_MSGID 0, __SUBJ_ALPHA_END 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_NO_WWW 0, __URI_NS , __YOUTUBE_RCVD 0' From: Gustavo Padovan Add a new event the userspace can subscribe to receive notifications about when a buffer was enqueued onto the driver. The event provides the index of the enqueued buffer. Signed-off-by: Gustavo Padovan --- include/uapi/linux/videodev2.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 3b6cfa6..5b44fd0 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2133,6 +2133,7 @@ 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 */ @@ -2185,6 +2186,10 @@ struct v4l2_event_motion_det { __u32 region_mask; }; +struct v4l2_event_buf_queued { + __u32 index; +}; + struct v4l2_event { __u32 type; union { @@ -2193,6 +2198,7 @@ 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;