From patchwork Fri May 31 09:31:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Jourdan X-Patchwork-Id: 10969813 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 45A00112C for ; Fri, 31 May 2019 09:31:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 36FFF289B3 for ; Fri, 31 May 2019 09:31:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 29EC028C54; Fri, 31 May 2019 09:31:38 +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=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI 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 C9D4A289B3 for ; Fri, 31 May 2019 09:31:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727158AbfEaJbg (ORCPT ); Fri, 31 May 2019 05:31:36 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:40802 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727140AbfEaJbe (ORCPT ); Fri, 31 May 2019 05:31:34 -0400 Received: by mail-wr1-f68.google.com with SMTP id p11so1194684wre.7 for ; Fri, 31 May 2019 02:31:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=oDHxGsrXeJidj701untt/R6ogKG8h4nrtZU+2E4/fDA=; b=eZ5o1iOKOmU9ImO+ETCAduVNT36sLs+WQ8dQdJ7NPG7cMC+JkE5CEyy0yxxrR058q6 cbBygt4YFV4uqu6AS0nSmwion1FztQFXCYEBF9+MKoObTrwoan5UUb38OOjnySOz608H lDpvVtjlrDS1dXbS7BbXtH1Xwirui7c9S6ou185LVWF1jSzK+EwSOJ1ukakLdRPFQTg1 mh5uJbpKwPbcob1V/7wleFI3FxtfoeJ0hKpK/eC3u5a+AL92m3yUyT5CM87zKi80dEuu S89IcMPvgiwH93UGEDdkgjFW6Gh+bcs5drh2TC9Awg0CRRLjlM5wPEv18zRKfCd41V72 5cNg== 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:mime-version:content-transfer-encoding; bh=oDHxGsrXeJidj701untt/R6ogKG8h4nrtZU+2E4/fDA=; b=TPVwXYeKcngZCPgPCQkq422zqkRhUPIm5wovdGejobwMEUEFnW3OLToLFLSUqZb8Cm XC0l5/Xjk59fDKDIbEpmzRWpLD4amD1NloLgcbZjfTUqjYn84kByFhI+qeLfSD9Cag0F p4AX9pF4HNeGlorIz79E9maHmBNKyFmyYCJN1bonM/TTwNhqX2oPcOxhkm7iz/5ttcyd V5+kPsp13r4Ca7OKIGqDX1v9Y/HwEyeHJnXSQ2t9slK0Z/i+f3ML4M8EbIYbR6Dx/tYs VxjONqbkWUyMeC6uV7Z++/W9Yeim1Ec3p66MqW6wzfErbhRcpvwvnT3Fr0JEkZ5+CG4x yXBg== X-Gm-Message-State: APjAAAXIj/6Dt/3+L33WoXYoARA0ofDXwQfQzLVoWCva801f/Mf+ohOa jlWcf9yFUpAGqAHmY2pmu8Mpvw== X-Google-Smtp-Source: APXvYqy+FDDF8Pib6Y2BDgETFWEQSTK2um06CcN2NmrEMWrfPEWU/qRyDjEDyw2S9zAZ3x0XMomz8A== X-Received: by 2002:adf:dc0c:: with SMTP id t12mr5813693wri.101.1559295092871; Fri, 31 May 2019 02:31:32 -0700 (PDT) Received: from mjourdan-pc.numericable.fr (abo-99-183-68.mtp.modulonet.fr. [85.68.183.99]) by smtp.gmail.com with ESMTPSA id b136sm7187023wme.30.2019.05.31.02.31.31 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 31 May 2019 02:31:32 -0700 (PDT) From: Maxime Jourdan To: Mauro Carvalho Chehab , Hans Verkuil Cc: Maxime Jourdan , Kevin Hilman , Jerome Brunet , Neil Armstrong , Martin Blumenstingl , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Subject: [PATCH v7 2/4] media: videodev2: add V4L2_FMT_FLAG_FIXED_RESOLUTION Date: Fri, 31 May 2019 11:31:24 +0200 Message-Id: <20190531093126.26956-3-mjourdan@baylibre.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190531093126.26956-1-mjourdan@baylibre.com> References: <20190531093126.26956-1-mjourdan@baylibre.com> MIME-Version: 1.0 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 When a v4l2 driver exposes V4L2_EVENT_SOURCE_CHANGE, some (usually OUTPUT) formats may not be able to trigger this event. For instance, MPEG2 on Amlogic hardware does not support resolution switching on the fly, and a decode session must operate at a set resolution defined before the decoding start. Add a enum_fmt format flag to tag those specific formats. Signed-off-by: Maxime Jourdan --- Documentation/media/uapi/v4l/vidioc-enum-fmt.rst | 6 ++++++ include/uapi/linux/videodev2.h | 5 +++-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst b/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst index 822d6730e7d2..b11448a1848b 100644 --- a/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst +++ b/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst @@ -127,6 +127,12 @@ one until ``EINVAL`` is returned. - This format is not native to the device but emulated through software (usually libv4l2), where possible try to use a native format instead for better performance. + * - ``V4L2_FMT_FLAG_FIXED_RESOLUTION`` + - 0x0004 + - Dynamic resolution switching is not supported for this format, + even if the event ``V4L2_EVENT_SOURCE_CHANGE`` is supported by + the device. + Return Value diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 1050a75fb7ef..9b0a7f82dd92 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -768,8 +768,9 @@ struct v4l2_fmtdesc { __u32 reserved[4]; }; -#define V4L2_FMT_FLAG_COMPRESSED 0x0001 -#define V4L2_FMT_FLAG_EMULATED 0x0002 +#define V4L2_FMT_FLAG_COMPRESSED 0x0001 +#define V4L2_FMT_FLAG_EMULATED 0x0002 +#define V4L2_FMT_FLAG_FIXED_RESOLUTION 0x0004 /* Frame Size and frame rate enumeration */ /*