From patchwork Thu Aug 22 19:44:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Jernej_=C5=A0krabec?= X-Patchwork-Id: 11110005 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 86BB313A4 for ; Thu, 22 Aug 2019 19:45:25 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 652EB233FC for ; Thu, 22 Aug 2019 19:45:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WS9uv9g3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 652EB233FC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=siol.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=o7KlPjFzacfDJago3QC6r9Wdr6j9dr1TPLffFhOgTrk=; b=WS9uv9g36HU946 IA5Z0IrXjz98P1IJfKbcmt/m9VXPzk5ZLo8kJ5PXJMurMVZwJj+4T+L74qsWt40+6RNnqfnFlDS1Q IQxPpoIAjZ/osT+iYoV0NF9+x7r9hWRSMedwJRyBIXbEdMB+gyFAx2HxkXh7IIviACXVpzJOt6AWT hUxyb4xwEAQoHnWHVLrXYhBHeoT49QyuGFMKTIVFcQ1oF52Nv/My5vtRhuD4bxiCohJZl7Y5qufDC IniHYcBwTREbA3U3sDZbU3UPnhXs+T249Mq//qQIdfWTboCQv0Sofg5vCiJiQ7ft09TcFzMNlUX3T yJy4yJStG0fpBA7jHNMQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i0t1P-0007nC-PH; Thu, 22 Aug 2019 19:45:23 +0000 Received: from mailoutvs50.siol.net ([185.57.226.241] helo=mail.siol.net) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i0t1M-0007kT-7f for linux-arm-kernel@lists.infradead.org; Thu, 22 Aug 2019 19:45:22 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id AD1685249F0; Thu, 22 Aug 2019 21:45:14 +0200 (CEST) X-Virus-Scanned: amavisd-new at psrvmta11.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta11.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id FoNyg35v9do7; Thu, 22 Aug 2019 21:45:14 +0200 (CEST) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 39C155249EB; Thu, 22 Aug 2019 21:45:14 +0200 (CEST) Received: from localhost.localdomain (cpe-86-58-59-25.static.triera.net [86.58.59.25]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id B87B25249F0; Thu, 22 Aug 2019 21:45:11 +0200 (CEST) From: Jernej Skrabec To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl, paul.kocialkowski@bootlin.com, mripard@kernel.org Subject: [PATCH 2/8] videodev2.h: add V4L2_DEC_CMD_FLUSH Date: Thu, 22 Aug 2019 21:44:54 +0200 Message-Id: <20190822194500.2071-3-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.22.1 In-Reply-To: <20190822194500.2071-1-jernej.skrabec@siol.net> References: <20190822194500.2071-1-jernej.skrabec@siol.net> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190822_124520_438078_7938DE59 X-CRM114-Status: GOOD ( 12.20 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [185.57.226.241 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devel@driverdev.osuosl.org, jernej.skrabec@siol.net, pawel@osciak.com, acourbot@chromium.org, jonas@kwiboo.se, gregkh@linuxfoundation.org, wens@csie.org, tfiga@chromium.org, kyungmin.park@samsung.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, ezequiel@collabora.com, linux-kernel@vger.kernel.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Hans Verkuil Add this new V4L2_DEC_CMD_FLUSH decoder command and document it. Signed-off-by: Hans Verkuil Signed-off-by: Jernej Skrabec Reviewed-by: Boris Brezillon Reviewed-by: Alexandre Courbot --- Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst | 11 ++++++++++- Documentation/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst b/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst index 57f0066f4cff..0bffef6058f7 100644 --- a/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst +++ b/Documentation/media/uapi/v4l/vidioc-decoder-cmd.rst @@ -208,7 +208,16 @@ introduced in Linux 3.3. They are, however, mandatory for stateful mem2mem decod been started yet, the driver will return an ``EPERM`` error code. When the decoder is already running, this command does nothing. No flags are defined for this command. - + * - ``V4L2_DEC_CMD_FLUSH`` + - 4 + - Flush any held capture buffers. Only valid for stateless decoders, + and only if ``V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF`` was set. + This command is typically used when the application reached the + end of the stream and the last output buffer had the + ``V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF`` flag set. This would prevent + dequeueing the last capture buffer containing the last decoded frame. + So this command can be used to explicitly flush that last decoded + frame. Return Value ============ diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index adeb6b7a15cb..a79028e4d929 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -434,6 +434,7 @@ replace define V4L2_DEC_CMD_START decoder-cmds replace define V4L2_DEC_CMD_STOP decoder-cmds replace define V4L2_DEC_CMD_PAUSE decoder-cmds replace define V4L2_DEC_CMD_RESUME decoder-cmds +replace define V4L2_DEC_CMD_FLUSH decoder-cmds replace define V4L2_DEC_CMD_START_MUTE_AUDIO decoder-cmds replace define V4L2_DEC_CMD_PAUSE_TO_BLACK decoder-cmds diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 4fa9f543742d..91a79e16089c 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1978,6 +1978,7 @@ struct v4l2_encoder_cmd { #define V4L2_DEC_CMD_STOP (1) #define V4L2_DEC_CMD_PAUSE (2) #define V4L2_DEC_CMD_RESUME (3) +#define V4L2_DEC_CMD_FLUSH (4) /* Flags for V4L2_DEC_CMD_START */ #define V4L2_DEC_CMD_START_MUTE_AUDIO (1 << 0)