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0593480381
Using requestMediaDataWhenReadyOnQueue the layer will execute a block when it would like more frames. Using this we can provide the current frame and avoid needlessly filling the layer's buffer queue causing older frames to be displayed when under resource pressure.
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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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 _AV_SINK_H_
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#define _AV_SINK_H_
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#include <gst/gst.h>
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#include <gst/video/gstvideosink.h>
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#include <gst/video/video.h>
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#include <QuartzCore/QuartzCore.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <CoreMedia/CoreMedia.h>
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#include <AVFoundation/AVFoundation.h>
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G_BEGIN_DECLS
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#define GST_TYPE_AV_SAMPLE_VIDEO_SINK \
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(gst_av_sample_video_sink_get_type())
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#define GST_AV_SAMPLE_VIDEO_SINK(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AV_SAMPLE_VIDEO_SINK,GstAVSampleVideoSink))
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#define GST_AV_SAMPLE_VIDEO_SINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AV_SAMPLE_VIDEO_SINK,GstAVSampleVideoSinkClass))
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#define GST_IS_AV_SAMPLE_VIDEO_SINK(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AV_SAMPLE_VIDEO_SINK))
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#define GST_IS_AV_SAMPLE_VIDEO_SINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AV_SAMPLE_VIDEO_SINK))
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typedef struct _GstAVSampleVideoSink GstAVSampleVideoSink;
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typedef struct _GstAVSampleVideoSinkClass GstAVSampleVideoSinkClass;
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struct _GstAVSampleVideoSink
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{
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GstVideoSink video_sink;
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AVSampleBufferDisplayLayer *layer;
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GstVideoInfo info;
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gboolean keep_aspect_ratio;
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GstBufferPool *pool;
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gboolean layer_requesting_data;
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GMutex render_lock;
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GstBuffer *buffer;
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GstFlowReturn render_flow_return;
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};
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struct _GstAVSampleVideoSinkClass
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{
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GstVideoSinkClass video_sink_class;
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};
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GType gst_av_sample_video_sink_get_type(void);
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G_END_DECLS
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#endif
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