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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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91b7f2d99e
Implements video capture on v4l2camerasrc by using the mode property, when mode is set to video, the pad probe pushes a new segment and starts pushing buffers on the pad, when it the property is sent back to preview, the pad probe pushes an EOS and stops pushing buffers. This is controlled by a Recording State variable, that is protected by the GST_OBJECT_LOCK. I don't think locking for every buffer is nice, so we could find an alternative lockless way here.
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
/*
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* GStreamer
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* Copyright (C) 2010 Texas Instruments, Inc
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_V4L2_CAMERA_SRC_H__
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#define __GST_V4L2_CAMERA_SRC_H__
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#include <gst/gst.h>
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#include "gstbasecamerasrc.h"
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2_CAMERA_SRC \
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(gst_v4l2_camera_src_get_type())
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#define GST_V4L2_CAMERA_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_CAMERA_SRC,GstV4l2CameraSrc))
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#define GST_V4L2_CAMERA_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_CAMERA_SRC,GstV4l2CameraSrcClass))
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#define GST_IS_V4L2_CAMERA_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_CAMERA_SRC))
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#define GST_IS_V4L2_CAMERA_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_CAMERA_SRC))
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GType gst_v4l2_camera_src_get_type (void);
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typedef struct _GstV4l2CameraSrc GstV4l2CameraSrc;
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typedef struct _GstV4l2CameraSrcClass GstV4l2CameraSrcClass;
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enum GstVideoRecordingStatus {
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GST_VIDEO_RECORDING_STATUS_DONE,
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GST_VIDEO_RECORDING_STATUS_STARTING,
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GST_VIDEO_RECORDING_STATUS_RUNNING,
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GST_VIDEO_RECORDING_STATUS_FINISHING
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};
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/**
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* GstV4l2CameraSrc:
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*
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*/
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struct _GstV4l2CameraSrc
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{
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GstBaseCameraSrc parent;
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GstCameraBinMode mode;
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/* video recording controls */
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gint video_rec_status;
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/* source elements */
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GstElement *src_vid_src;
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GstElement *src_filter;
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GstElement *src_zoom_crop;
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GstElement *src_zoom_scale;
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GstElement *src_zoom_filter;
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/* srcpads of tee */
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GstPad *tee_vf_srcpad;
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GstPad *tee_image_srcpad;
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GstPad *tee_video_srcpad;
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/* Application configurable elements */
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GstElement *app_vid_src;
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GstElement *app_video_filter;
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/* Caps that videosrc supports */
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GstCaps *allowed_caps;
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/* Optional base crop for frames. Used to crop frames e.g.
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due to wrong aspect ratio, before the crop related to zooming. */
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gint base_crop_top;
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gint base_crop_bottom;
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gint base_crop_left;
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gint base_crop_right;
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/* Caps applied to capsfilters when in view finder mode */
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GstCaps *view_finder_caps;
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/* Caps applied to capsfilters when taking still image */
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GstCaps *image_capture_caps;
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gboolean image_capture_caps_update; // XXX where does this get set..
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/* if GstV4l2CameraSrc is moved into camerabin plugin, then this isn't
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* needed:
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*/
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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/**
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* GstV4l2CameraSrcClass:
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*
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*/
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struct _GstV4l2CameraSrcClass
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{
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GstBaseCameraSrcClass parent;
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/* if GstV4l2CameraSrc is moved into camerabin plugin, then this isn't
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* needed:
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*/
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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gboolean gst_v4l2_camera_src_plugin_init (GstPlugin * plugin);
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#endif /* __GST_V4L2_CAMERA_SRC_H__ */
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