linux-kernel - [PATCH v10 2/4] media: pixfmt: Add H264 Slice format

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Message-Id: <20190424142237.4979-3-paul.kocialkowski@bootlin.com>
Date:   Wed, 24 Apr 2019 16:22:35 +0200
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     hans.verkuil@...co.com, acourbot@...omium.org,
        sakari.ailus@...ux.intel.com,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     tfiga@...omium.org, posciak@...omium.org,
        Chen-Yu Tsai <wens@...e.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        nicolas.dufresne@...labora.com, jenskuske@...il.com,
        jernej.skrabec@...il.com, jonas@...boo.se, ezequiel@...labora.com,
        linux-sunxi@...glegroups.com,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>
Subject: [PATCH v10 2/4] media: pixfmt: Add H264 Slice format

From: Maxime Ripard <maxime.ripard@...tlin.com>

The H264_SLICE_RAW format is meant to hold the parsed slice data without
the start code. This will be needed by stateless decoders.

Signed-off-by: Maxime Ripard <maxime.ripard@...tlin.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@...all.nl>
---
 drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
 include/media/h264-ctrls.h           | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index ac87c3e37280..f6e1254064d2 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1325,6 +1325,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
 		case V4L2_PIX_FMT_H264:		descr = "H.264"; break;
 		case V4L2_PIX_FMT_H264_NO_SC:	descr = "H.264 (No Start Codes)"; break;
 		case V4L2_PIX_FMT_H264_MVC:	descr = "H.264 MVC"; break;
+		case V4L2_PIX_FMT_H264_SLICE_RAW:	descr = "H.264 Parsed Slice Data"; break;
 		case V4L2_PIX_FMT_H263:		descr = "H.263"; break;
 		case V4L2_PIX_FMT_MPEG1:	descr = "MPEG-1 ES"; break;
 		case V4L2_PIX_FMT_MPEG2:	descr = "MPEG-2 ES"; break;
diff --git a/include/media/h264-ctrls.h b/include/media/h264-ctrls.h
index e2f83b3cdbef..e1404d78d6ff 100644
--- a/include/media/h264-ctrls.h
+++ b/include/media/h264-ctrls.h
@@ -11,6 +11,11 @@
 #ifndef _H264_CTRLS_H_
 #define _H264_CTRLS_H_
 
+#include <linux/videodev2.h>
+
+/* Our pixel format isn't stable at the moment */
+#define V4L2_PIX_FMT_H264_SLICE_RAW v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */
+
 /*
  * This is put insanely high to avoid conflicting with controls that
  * would be added during the phase where those controls are not
-- 
2.21.0