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f50573fd66
Add a GstVideoPool object that can be used to allocate video frames with support for metadata and alignment. Add method to reset alignment info.
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/* GStreamer
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* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_VIDEO_POOL_H__
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#define __GST_VIDEO_POOL_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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/**
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* GST_BUFFER_POOL_OPTION_VIDEO_META:
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*
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* An option that can be activated on bufferpool to request video metadata
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* on buffers from the pool.
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*/
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#define GST_BUFFER_POOL_OPTION_VIDEO_META "GstBufferPoolOptionVideoMeta"
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/**
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* GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT:
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*
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* A bufferpool option to enable extra padding. When a bufferpool supports this
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* option, gst_buffer_pool_set_video_alignment() can be called.
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*/
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#define GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT "GstBufferPoolOptionVideoAlignment"
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typedef struct _GstVideoAlignment GstVideoAlignment;
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/**
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* GstVideoAlignment:
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* @padding_left: extra pixels on the left side
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* @padding_right: extra pixels on the right side
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* @padding_top: extra pixels on the top
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* @padding_bottom: extra pixels on the bottom
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* @stride_align: array with extra alignment requirements for the strides
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*
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* Extra alignment paramters for the memory of video buffers. This
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* structure is usually used to configure the bufferpool if it supports the
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* #GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT.
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*/
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struct _GstVideoAlignment
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{
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guint padding_top;
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guint padding_bottom;
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guint padding_left;
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guint padding_right;
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guint stride_align[GST_VIDEO_MAX_PLANES];
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};
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void gst_video_alignment_reset (GstVideoAlignment *align);
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/* setting a bufferpool config */
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void gst_buffer_pool_config_set_video_alignment (GstStructure *config, GstVideoAlignment *align);
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gboolean gst_buffer_pool_config_get_video_alignment (GstStructure *config, GstVideoAlignment *align);
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/* video bufferpool */
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typedef struct _GstVideoBufferPool GstVideoBufferPool;
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typedef struct _GstVideoBufferPoolClass GstVideoBufferPoolClass;
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typedef struct _GstVideoBufferPoolPrivate GstVideoBufferPoolPrivate;
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#define GST_TYPE_VIDEO_BUFFER_POOL (gst_video_buffer_pool_get_type())
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#define GST_IS_VIDEO_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_BUFFER_POOL))
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#define GST_VIDEO_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_BUFFER_POOL, GstVideoBufferPool))
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#define GST_VIDEO_BUFFER_POOL_CAST(obj) ((GstVideoBufferPool*)(obj))
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struct _GstVideoBufferPool
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{
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GstBufferPool bufferpool;
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GstVideoBufferPoolPrivate *priv;
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};
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struct _GstVideoBufferPoolClass
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{
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GstBufferPoolClass parent_class;
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};
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GType gst_video_buffer_pool_get_type (void);
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GstBufferPool * gst_video_buffer_pool_new (void);
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G_END_DECLS
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#endif /* __GST_VIDEO_POOL_H__ */
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