From patchwork Fri May 24 09:36:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10959601 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 A09EB112C for ; Fri, 24 May 2019 09:37:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8E18328867 for ; Fri, 24 May 2019 09:37:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7FE5C2886E; Fri, 24 May 2019 09:37:03 +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,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 062B328867 for ; Fri, 24 May 2019 09:37:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390343AbfEXJg6 (ORCPT ); Fri, 24 May 2019 05:36:58 -0400 Received: from relay9-d.mail.gandi.net ([217.70.183.199]:38659 "EHLO relay9-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389881AbfEXJg6 (ORCPT ); Fri, 24 May 2019 05:36:58 -0400 X-Originating-IP: 90.88.147.134 Received: from localhost.localdomain (aaubervilliers-681-1-27-134.w90-88.abo.wanadoo.fr [90.88.147.134]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 02D86FF811; Fri, 24 May 2019 09:36:53 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devel@driverdev.osuosl.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@googlegroups.com Cc: Mauro Carvalho Chehab , Maxime Ripard , Paul Kocialkowski , Greg Kroah-Hartman , Chen-Yu Tsai , Hans Verkuil , Ezequiel Garcia , Tomasz Figa , Alexandre Courbot , Nicolas Dufresne , Boris Brezillon , Jernej Skrabec , Thomas Petazzoni Subject: [PATCH v5 3/4] media: pixfmt: Document the HEVC slice pixel format Date: Fri, 24 May 2019 11:36:34 +0200 Message-Id: <20190524093635.1832-4-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190524093635.1832-1-paul.kocialkowski@bootlin.com> References: <20190524093635.1832-1-paul.kocialkowski@bootlin.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 Document the current state of the HEVC slice pixel format. The format will need to evolve in the future, which is why it is not part of the public API. Signed-off-by: Paul Kocialkowski --- .../media/uapi/v4l/pixfmt-compressed.rst | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/media/uapi/v4l/pixfmt-compressed.rst b/Documentation/media/uapi/v4l/pixfmt-compressed.rst index 4b701fc7653e..9d4195723c3e 100644 --- a/Documentation/media/uapi/v4l/pixfmt-compressed.rst +++ b/Documentation/media/uapi/v4l/pixfmt-compressed.rst @@ -143,6 +143,27 @@ Compressed Formats - ``V4L2_PIX_FMT_HEVC`` - 'HEVC' - HEVC/H.265 video elementary stream. + * .. _V4L2-PIX-FMT-HEVC-SLICE: + + - ``V4L2_PIX_FMT_HEVC_SLICE`` + - 'S265' + - HEVC parsed slice data, as extracted from the HEVC bitstream. + This format is adapted for stateless video decoders that implement a + HEVC pipeline (using the :ref:`codec` and :ref:`media-request-api`). + Metadata associated with the frame to decode is required to be passed + through the following controls : + * ``V4L2_CID_MPEG_VIDEO_HEVC_SPS`` + * ``V4L2_CID_MPEG_VIDEO_HEVC_PPS`` + * ``V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS`` + See the :ref:`associated Codec Control IDs `. + Buffers associated with this pixel format must contain the appropriate + number of macroblocks to decode a full corresponding frame. + + .. note:: + + This format is not yet part of the public kernel API and it + is expected to change. + * .. _V4L2-PIX-FMT-FWHT: - ``V4L2_PIX_FMT_FWHT``