gstreamer/gst/rawparse/gstrawvideoparse.h

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/* GStreamer
* Copyright (C) <2016> Carlos Rafael Giani <dv at pseudoterminal dot org>
*
* 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_RAW_VIDEO_PARSE_H__
#define __GST_RAW_VIDEO_PARSE_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gstrawbaseparse.h"
G_BEGIN_DECLS
#define GST_TYPE_RAW_VIDEO_PARSE \
(gst_raw_video_parse_get_type())
#define GST_RAW_VIDEO_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_RAW_VIDEO_PARSE, GstRawVideoParse))
#define GST_RAW_VIDEO_PARSE_CAST(obj) \
((GstRawVideoParse *)(obj))
#define GST_RAW_VIDEO_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_RAW_VIDEO_PARSE, GstRawVideoParseClass))
#define GST_IS_RAW_VIDEO_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_RAW_VIDEO_PARSE))
#define GST_IS_RAW_VIDEO_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_RAW_VIDEO_PARSE))
typedef struct _GstRawVideoParseConfig GstRawVideoParseConfig;
typedef struct _GstRawVideoParse GstRawVideoParse;
typedef struct _GstRawVideoParseClass GstRawVideoParseClass;
/* Contains information about the video frame format. */
struct _GstRawVideoParseConfig
{
/* If TRUE, then this configuration is ready to use */
gboolean ready;
/* FIXME: These values should not be necessary, since there's
* GstVideoInfo. However, setting these values in the video
* info independently is currently difficult. For example,
* setting the video format requires the gst_video_info_set_format()
* function, but this function also overwrites plane strides
* and offsets. */
gint width, height;
GstVideoFormat format;
gint pixel_aspect_ratio_n, pixel_aspect_ratio_d;
gint framerate_n, framerate_d;
gboolean interlaced;
gsize plane_offsets[GST_VIDEO_MAX_PLANES];
gint plane_strides[GST_VIDEO_MAX_PLANES];
/* If TRUE, then TFF flags are added to outgoing buffers and
* their video metadata */
gboolean top_field_first;
/* Distance between the start of each frame, in bytes. If this value
* is larger than the actual size of a frame, then the extra bytes
* are skipped. For example, with frames that have 115200 bytes, a
* frame_stride value of 120000 means that 4800 trailing bytes are
* skipped after the 115200 frame bytes. This is useful to skip
* metadata in between frames. */
guint frame_stride;
GstVideoInfo info;
gboolean custom_plane_strides;
};
struct _GstRawVideoParse
{
GstRawBaseParse parent;
/*< private > */
/* Configuration controlled by the object properties. Its ready value
* is set to TRUE from the start, so it can be used right away.
*/
GstRawVideoParseConfig properties_config;
/* Configuration controlled by the sink caps. Its ready value is
* initially set to FALSE until valid sink caps come in. It is set to
* FALSE again when the stream-start event is observed.
*/
GstRawVideoParseConfig sink_caps_config;
/* Currently active configuration. Points either to properties_config
* or to sink_caps_config. This is never NULL. */
GstRawVideoParseConfig *current_config;
};
struct _GstRawVideoParseClass
{
GstRawBaseParseClass parent_class;
};
GType gst_raw_video_parse_get_type (void);
G_END_DECLS
#endif