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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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70086fda22
Add properties to control input cropping in the V4L2 device. The input cropping is applied before composing the result to the capture buffer. By default the capture size will be set to the same size as the crop region, but it can be scaled to a different output frame size if supported by the V4L2 device. If scaling is not supported, the cropped image will be composed as is into the top-left corner of the capture buffer. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1089>
98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
/* GStreamer
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*
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* 2006 Edgard Lima <edgard.lima@gmail.com>
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*
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* gstv4l2src.h: BT8x8/V4L2 source element
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_V4L2SRC_H__
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#define __GST_V4L2SRC_H__
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#include <gstv4l2object.h>
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#include <gstv4l2bufferpool.h>
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2SRC \
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(gst_v4l2src_get_type())
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#define GST_V4L2SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2SRC,GstV4l2Src))
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#define GST_V4L2SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2SRC,GstV4l2SrcClass))
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#define GST_IS_V4L2SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2SRC))
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#define GST_IS_V4L2SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2SRC))
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typedef struct _GstV4l2Src GstV4l2Src;
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typedef struct _GstV4l2SrcClass GstV4l2SrcClass;
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/**
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* GstV4l2Src:
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*
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* Opaque object.
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*/
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struct _GstV4l2Src
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{
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GstPushSrc pushsrc;
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/*< private >*/
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GstV4l2Object * v4l2object;
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guint64 offset;
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gboolean next_offset_same;
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/* offset adjust after renegotiation */
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guint64 renegotiation_adjust;
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GstClockTime ctrl_time;
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gboolean pending_set_fmt;
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guint crop_top;
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guint crop_left;
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guint crop_bottom;
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guint crop_right;
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struct v4l2_rect crop_bounds;
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gboolean apply_crop_settings;
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struct v4l2_rect crop_rect;
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/* Timestamp sanity check */
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GstClockTime last_timestamp;
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gboolean has_bad_timestamp;
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/* maintain signal status, updated during negotiation */
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gboolean no_signal;
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};
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struct _GstV4l2SrcClass
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{
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GstPushSrcClass parent_class;
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GList *v4l2_class_devices;
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};
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GType gst_v4l2src_get_type (void);
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G_END_DECLS
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#endif /* __GST_V4L2SRC_H__ */
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