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46a6d3f899
We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
119 lines
5 KiB
C
119 lines
5 KiB
C
/* Generic video aggregator plugin
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* Copyright (C) 2008 Wim Taymans <wim@fluendo.com>
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* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@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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#ifndef __GST_VIDEO_AGGREGATOR_H__
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#define __GST_VIDEO_AGGREGATOR_H__
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#ifndef GST_USE_UNSTABLE_API
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#warning "The Video library from gst-plugins-bad is unstable API and may change in future."
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#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/base/gstaggregator.h>
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#include <gst/video/video-bad-prelude.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_AGGREGATOR (gst_video_aggregator_get_type())
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#define GST_VIDEO_AGGREGATOR(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_AGGREGATOR, GstVideoAggregator))
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#define GST_VIDEO_AGGREGATOR_CAST(obj) ((GstVideoAggregator *)(obj))
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#define GST_VIDEO_AGGREGATOR_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_AGGREGATOR, GstVideoAggregatorClass))
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#define GST_IS_VIDEO_AGGREGATOR(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_AGGREGATOR))
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#define GST_IS_VIDEO_AGGREGATOR_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_AGGREGATOR))
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#define GST_VIDEO_AGGREGATOR_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VIDEO_AGGREGATOR,GstVideoAggregatorClass))
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typedef struct _GstVideoAggregator GstVideoAggregator;
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typedef struct _GstVideoAggregatorClass GstVideoAggregatorClass;
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typedef struct _GstVideoAggregatorPrivate GstVideoAggregatorPrivate;
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#include "gstvideoaggregatorpad.h"
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/**
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* GstVideoAggregator:
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* @info: The #GstVideoInfo representing the currently set
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* srcpad caps.
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*/
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struct _GstVideoAggregator
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{
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GstAggregator aggregator;
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/*< public >*/
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/* Output caps */
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GstVideoInfo info;
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/* < private > */
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GstVideoAggregatorPrivate *priv;
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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/**
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* GstVideoAggregatorClass:
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* @update_caps: Optional.
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* Lets subclasses update the #GstCaps representing
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* the src pad caps before usage. Return %NULL to indicate failure.
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* @aggregate_frames: Lets subclasses aggregate frames that are ready. Subclasses
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* should iterate the GstElement.sinkpads and use the already
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* mapped #GstVideoFrame from GstVideoAggregatorPad.aggregated_frame
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* or directly use the #GstBuffer from GstVideoAggregatorPad.buffer
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* if it needs to map the buffer in a special way. The result of the
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* aggregation should land in @outbuffer.
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* @get_output_buffer: Optional.
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* Lets subclasses provide a #GstBuffer to be used as @outbuffer of
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* the #aggregate_frames vmethod.
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* @negotiated_caps: Optional.
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* Notifies subclasses what caps format has been negotiated
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* @find_best_format: Optional.
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* Lets subclasses decide of the best common format to use.
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**/
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struct _GstVideoAggregatorClass
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{
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/*< private >*/
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GstAggregatorClass parent_class;
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/*< public >*/
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GstCaps * (*update_caps) (GstVideoAggregator * videoaggregator,
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GstCaps * caps);
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GstFlowReturn (*aggregate_frames) (GstVideoAggregator * videoaggregator,
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GstBuffer * outbuffer);
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GstFlowReturn (*get_output_buffer) (GstVideoAggregator * videoaggregator,
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GstBuffer ** outbuffer);
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void (*find_best_format) (GstVideoAggregator * vagg,
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GstCaps * downstream_caps,
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GstVideoInfo * best_info,
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gboolean * at_least_one_alpha);
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GstCaps *sink_non_alpha_caps;
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/* < private > */
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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GST_VIDEO_BAD_API
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GType gst_video_aggregator_get_type (void);
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G_END_DECLS
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#endif /* __GST_VIDEO_AGGREGATOR_H__ */
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