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gst: Add utility to convert StreamFormats to GstCaps

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This transforms the basic information found in StreamFormats to GstCaps.
This can be handy to reply to early caps query or inside a device
provider. Note that we ignored generated range as they are harmful to
caps negotiation. We also don't simplify the caps for readability
reasons, so some of the discrete value may be included in a range.

Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Nicolas Dufresne 2020-01-14 10:55:01 -05:00 • committed by Laurent Pinchart
parent 17cccc68a8
commit eee8f56f0a
3 changed files with 125 additions and 0 deletions
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19
src/gstreamer/gstlibcamera-utils.h Normal file
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Collabora Ltd.
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
*
* gstlibcamera-utils.h - GStreamer libcamera Utility Functions
*/
#ifndef __GST_LIBCAMERA_UTILS_H__
#define __GST_LIBCAMERA_UTILS_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <libcamera/stream.h>
GstCaps *gst_libcamera_stream_formats_to_caps(const libcamera::StreamFormats &formats);
#endif /* __GST_LIBCAMERA_UTILS_H__ */