| /* Generic video aggregator plugin |
| * Copyright (C) 2008 Wim Taymans <wim@fluendo.com> |
| * Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_VIDEO_AGGREGATOR_PAD_H__ |
| #define __GST_VIDEO_AGGREGATOR_PAD_H__ |
| |
| #include <gst/gst.h> |
| #include <gst/video/video.h> |
| |
| #include <gst/base/gstaggregator.h> |
| #include "gstvideoaggregator.h" |
| |
| G_BEGIN_DECLS |
| |
| #define GST_TYPE_VIDEO_AGGREGATOR_PAD (gst_videoaggregator_pad_get_type()) |
| #define GST_VIDEO_AGGREGATOR_PAD(obj) \ |
| (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_AGGREGATOR_PAD, GstVideoAggregatorPad)) |
| #define GST_VIDEO_AGGREGATOR_PAD_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_COMPOSITOR_PAD, GstVideoAggregatorPadClass)) |
| #define GST_IS_VIDEO_AGGREGATOR_PAD(obj) \ |
| (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_AGGREGATOR_PAD)) |
| #define GST_IS_VIDEO_AGGREGATOR_PAD_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_AGGREGATOR_PAD)) |
| #define GST_VIDEO_AGGREGATOR_PAD_GET_CLASS(obj) \ |
| (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VIDEO_AGGREGATOR_PAD,GstVideoAggregatorPadClass)) |
| |
| typedef struct _GstVideoAggregatorPad GstVideoAggregatorPad; |
| typedef struct _GstVideoAggregatorPadClass GstVideoAggregatorPadClass; |
| typedef struct _GstVideoAggregatorPadPrivate GstVideoAggregatorPadPrivate; |
| |
| /** |
| * GstVideoAggregatorPad: |
| * @info: The #GstVideoInfo currently set on the pad |
| * @buffer_vinfo: The #GstVideoInfo representing the type contained |
| * in @buffer |
| * @aggregated_frame: The #GstVideoFrame ready to be used for aggregation |
| * inside the aggregate_frames vmethod. |
| * @zorder: The zorder of this pad |
| */ |
| struct _GstVideoAggregatorPad |
| { |
| GstAggregatorPad parent; |
| |
| GstVideoInfo info; |
| |
| GstBuffer *buffer; |
| /* The caps on the pad may not match the buffer above because of two reasons: |
| * 1) When caps change, the info above will get updated, but the buffer might |
| * not since it might be pending on the GstAggregatorPad |
| * 2) We might reject the new buffer in fill_queues() and reuse a previous |
| * buffer which has older GstVideoInfo |
| * Hence, we need to maintain a GstVideoInfo for mapping buffers separately */ |
| GstVideoInfo buffer_vinfo; |
| |
| GstVideoFrame *aggregated_frame; |
| |
| /* properties */ |
| guint zorder; |
| |
| /* < private > */ |
| GstVideoAggregatorPadPrivate *priv; |
| gpointer _gst_reserved[GST_PADDING]; |
| }; |
| |
| /** |
| * GstVideoAggregatorPadClass: |
| * |
| * @set_info: Lets subclass set a converter on the pad, |
| * right after a new format has been negotiated. |
| * @prepare_frame: Prepare the frame from the pad buffer (if any) |
| * and sets it to @aggregated_frame |
| * @clean_frame: clean the frame previously prepared in prepare_frame |
| */ |
| struct _GstVideoAggregatorPadClass |
| { |
| GstAggregatorPadClass parent_class; |
| gboolean (*set_info) (GstVideoAggregatorPad * pad, |
| GstVideoAggregator * videoaggregator, |
| GstVideoInfo * current_info, |
| GstVideoInfo * wanted_info); |
| |
| gboolean (*prepare_frame) (GstVideoAggregatorPad * pad, |
| GstVideoAggregator * videoaggregator); |
| |
| void (*clean_frame) (GstVideoAggregatorPad * pad, |
| GstVideoAggregator * videoaggregator); |
| |
| gpointer _gst_reserved[GST_PADDING_LARGE]; |
| }; |
| |
| GType gst_videoaggregator_pad_get_type (void); |
| |
| G_END_DECLS |
| #endif /* __GST_VIDEO_AGGREGATOR_PAD_H__ */ |