From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 965DEC31E40 for ; Mon, 12 Aug 2019 11:05:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 740202085A for ; Mon, 12 Aug 2019 11:05:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728010AbfHLLFT (ORCPT ); Mon, 12 Aug 2019 07:05:19 -0400 Received: from lb3-smtp-cloud7.xs4all.net ([194.109.24.31]:34279 "EHLO lb3-smtp-cloud7.xs4all.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727936AbfHLLFT (ORCPT ); Mon, 12 Aug 2019 07:05:19 -0400 Received: from tschai.fritz.box ([46.9.232.237]) by smtp-cloud7.xs4all.net with ESMTPA id x88XhQAyTur8Tx88bhi10q; Mon, 12 Aug 2019 13:05:17 +0200 From: Hans Verkuil To: linux-media@vger.kernel.org Cc: Tomasz Figa , Hans Verkuil Subject: [PATCHv2 01/12] videodev2.h: add V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM Date: Mon, 12 Aug 2019 13:05:02 +0200 Message-Id: <20190812110513.23774-2-hverkuil-cisco@xs4all.nl> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190812110513.23774-1-hverkuil-cisco@xs4all.nl> References: <20190812110513.23774-1-hverkuil-cisco@xs4all.nl> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4wfCOhU3mComj6wOMUMmIgX6kMEGYiilghGTghsKF26cS8V6qhlMZ0sxTFXtwWxY602VoF14SnMx3xLg5cAXtZ1vrwOqX1/yu0Ajr+GSJicyQJ9izBWTdo t5CaWFqAhPq3E2ZDDTqsC1hMWyrOQzLF/N/QoxvKo5oLBNAfD8yBv3aO30EhqSfcGwjOQw09rBQu7+osxOk1VlUygCOVYMJDkcgkl0z9Yo0SiXS6nF7Ljc7x 6v7SZlQRFChMCJv0ZV/ACg== Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add an enum_fmt format flag to specifically tag coded formats where full bytestream parsing is supported by the device. Some stateful decoders are capable of fully parsing a bytestream, but others require that userspace pre-parses the bytestream into frames or fields (see the corresponding pixelformat descriptions for details). If this flag is set, then this pre-parsing step is not required (but still possible, of course). Signed-off-by: Hans Verkuil --- Documentation/media/uapi/v4l/vidioc-enum-fmt.rst | 8 ++++++++ Documentation/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 5 +++-- 3 files changed, 12 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..ebc05ce74bdf 100644 --- a/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst +++ b/Documentation/media/uapi/v4l/vidioc-enum-fmt.rst @@ -127,6 +127,14 @@ 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_CONTINUOUS_BYTESTREAM`` + - 0x0004 + - The hardware decoder for this compressed bytestream format (aka coded + format) is capable of parsing a continuous bytestream. Applications do + not need to parse the bytestream themselves to find the boundaries + between frames/fields. This flag can only be used in combination with + the ``V4L2_FMT_FLAG_COMPRESSED`` flag, since this applies to compressed + formats only. This flag is valid for stateful decoders only. Return Value diff --git a/Documentation/media/videodev2.h.rst.exceptions b/Documentation/media/videodev2.h.rst.exceptions index 8e7d3492d248..a0640b6d0f68 100644 --- a/Documentation/media/videodev2.h.rst.exceptions +++ b/Documentation/media/videodev2.h.rst.exceptions @@ -180,6 +180,7 @@ replace define V4L2_PIX_FMT_FLAG_PREMUL_ALPHA reserved-formats # V4L2 format flags replace define V4L2_FMT_FLAG_COMPRESSED fmtdesc-flags replace define V4L2_FMT_FLAG_EMULATED fmtdesc-flags +replace define V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM fmtdesc-flags # V4L2 timecode types replace define V4L2_TC_TYPE_24FPS timecode-type diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 2427bc4d8eba..67077d52c59d 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -774,8 +774,9 @@ 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_CONTINUOUS_BYTESTREAM 0x0004 /* Frame Size and frame rate enumeration */ /* -- 2.20.1