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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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c6be3d7505
Let the driver detects the change and reconfigure the capture side transparently from there. This avoid reallocation of the output buffers, and eliminates the need to stop and restart the capture task. This is only happening if the driver have support for this, otherwise the old behaviour is maintained. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4437>
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/*
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* Copyright (C) 2014 Collabora Ltd.
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* Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
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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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*/
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#ifndef __GST_V4L2_VIDEO_DEC_H__
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#define __GST_V4L2_VIDEO_DEC_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideodecoder.h>
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#include <gst/video/gstvideometa.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_V4L2_VIDEO_DEC \
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(gst_v4l2_video_dec_get_type())
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#define GST_V4L2_VIDEO_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2_VIDEO_DEC,GstV4l2VideoDec))
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#define GST_V4L2_VIDEO_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2_VIDEO_DEC,GstV4l2VideoDecClass))
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#define GST_IS_V4L2_VIDEO_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2_VIDEO_DEC))
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#define GST_IS_V4L2_VIDEO_DEC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2_VIDEO_DEC))
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typedef struct _GstV4l2VideoDec GstV4l2VideoDec;
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typedef struct _GstV4l2VideoDecClass GstV4l2VideoDecClass;
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struct _GstV4l2VideoDec
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{
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GstVideoDecoder parent;
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/* < private > */
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GstV4l2Object * v4l2output;
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GstV4l2Object * v4l2capture;
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/* pads */
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GstCaps *probed_srccaps;
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GstCaps *probed_sinkcaps;
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/* State */
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GstVideoCodecState *input_state;
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gboolean active;
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GstFlowReturn output_flow;
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/* Source Change Events */
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gboolean wait_for_source_change;
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gboolean draining;
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/* Capabilities */
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gboolean supports_source_change;
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};
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struct _GstV4l2VideoDecClass
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{
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GstVideoDecoderClass parent_class;
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gchar *default_device;
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};
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GType gst_v4l2_video_dec_get_type (void);
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gboolean gst_v4l2_is_video_dec (GstCaps * sink_caps, GstCaps * src_caps);
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void gst_v4l2_video_dec_register (GstPlugin * plugin,
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const gchar *basename,
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const gchar *device_path, gint video_fd,
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GstCaps * sink_caps, GstCaps * src_caps);
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G_END_DECLS
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#endif /* __GST_V4L2_VIDEO_DEC_H__ */
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