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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 578B8C10F11 for ; Wed, 24 Apr 2019 14:23:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27C33218FE for ; Wed, 24 Apr 2019 14:23:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730385AbfDXOXr (ORCPT ); Wed, 24 Apr 2019 10:23:47 -0400 Received: from relay11.mail.gandi.net ([217.70.178.231]:48409 "EHLO relay11.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730421AbfDXOXp (ORCPT ); Wed, 24 Apr 2019 10:23:45 -0400 Received: from localhost.localdomain (aaubervilliers-681-1-27-33.w90-88.abo.wanadoo.fr [90.88.147.33]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay11.mail.gandi.net (Postfix) with ESMTPSA id 6A7D4100014; Wed, 24 Apr 2019 14:23:39 +0000 (UTC) From: Paul Kocialkowski To: hans.verkuil@cisco.com, acourbot@chromium.org, sakari.ailus@linux.intel.com, Laurent Pinchart Cc: tfiga@chromium.org, posciak@chromium.org, Chen-Yu Tsai , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, nicolas.dufresne@collabora.com, jenskuske@gmail.com, jernej.skrabec@gmail.com, jonas@kwiboo.se, ezequiel@collabora.com, linux-sunxi@googlegroups.com, Thomas Petazzoni , Maxime Ripard , Hans Verkuil Subject: [PATCH v10 3/4] media: pixfmt: Add H264_SLICE_RAW format documentation Date: Wed, 24 Apr 2019 16:22:36 +0200 Message-Id: <20190424142237.4979-4-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190424142237.4979-1-paul.kocialkowski@bootlin.com> References: <20190424142237.4979-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Maxime Ripard The H264_SLICE_RAW format introduced before is meant for stateless decoders that will need the H264 parsed slice data without the start code. Let's document it. Signed-off-by: Maxime Ripard Signed-off-by: Hans Verkuil --- .../media/uapi/v4l/pixfmt-compressed.rst | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/Documentation/media/uapi/v4l/pixfmt-compressed.rst b/Documentation/media/uapi/v4l/pixfmt-compressed.rst index 6c961cfb74da..4b701fc7653e 100644 --- a/Documentation/media/uapi/v4l/pixfmt-compressed.rst +++ b/Documentation/media/uapi/v4l/pixfmt-compressed.rst @@ -52,6 +52,31 @@ Compressed Formats - ``V4L2_PIX_FMT_H264_MVC`` - 'M264' - H264 MVC video elementary stream. + * .. _V4L2-PIX-FMT-H264-SLICE-RAW: + + - ``V4L2_PIX_FMT_H264_SLICE_RAW`` + - 'S264' + - H264 parsed slice data, without the start code and as + extracted from the H264 bitstream. This format is adapted for + stateless video decoders that implement an H264 pipeline + (using the :ref:`mem2mem` and :ref:`media-request-api`). + Metadata associated with the frame to decode are required to + be passed through the ``V4L2_CID_MPEG_VIDEO_H264_SPS``, + ``V4L2_CID_MPEG_VIDEO_H264_PPS``, + ``V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX``, + ``V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAMS`` and + ``V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAMS`` controls. See the + :ref:`associated Codec Control IDs `. Exactly + one output and one capture buffer must be provided for use + with this pixel format. The output buffer must contain the + appropriate number of macroblocks to decode a full + corresponding frame to the matching capture buffer. + + .. note:: + + This format is not yet part of the public kernel API and it + is expected to change. + * .. _V4L2-PIX-FMT-H263: - ``V4L2_PIX_FMT_H263`` -- 2.21.0