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gstreamer/gst-libs/gst/video/video-frame.h
Aaron Boxer 6a78d20272 video-frame: update docs 
mention closed caption caps as valid caps for video buffer flags
2019-05-02 16:36:38 +00:00

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/* GStreamer
* Copyright (C) <2011> Wim Taymans <wim.taymans@gmail.com>
*
* 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_FRAME_H__
#define __GST_VIDEO_FRAME_H__
#include <gst/video/video-enumtypes.h>
G_BEGIN_DECLS
typedef struct _GstVideoFrame GstVideoFrame;
/**
* GstVideoFrameFlags:
* @GST_VIDEO_FRAME_FLAG_NONE: no flags
* @GST_VIDEO_FRAME_FLAG_INTERLACED: The video frame is interlaced. In mixed
* interlace-mode, this flag specifies if the frame is interlaced or
* progressive.
* @GST_VIDEO_FRAME_FLAG_TFF: The video frame has the top field first
* @GST_VIDEO_FRAME_FLAG_RFF: The video frame has the repeat flag
* @GST_VIDEO_FRAME_FLAG_ONEFIELD: The video frame has one field
* @GST_VIDEO_FRAME_FLAG_MULTIPLE_VIEW: The video contains one or
* more non-mono views
* @GST_VIDEO_FRAME_FLAG_FIRST_IN_BUNDLE: The video frame is the first
* in a set of corresponding views provided as sequential frames.
* @GST_VIDEO_FRAME_FLAG_TOP_FIELD: The video frame has the top field only. This
* is the same as GST_VIDEO_FRAME_FLAG_TFF | GST_VIDEO_FRAME_FLAG_ONEFIELD
* (Since: 1.16).
* @GST_VIDEO_FRAME_FLAG_BOTTOM_FIELD: The video frame has the bottom field
* only. This is the same as GST_VIDEO_FRAME_FLAG_ONEFIELD
* (GST_VIDEO_FRAME_FLAG_TFF flag unset) (Since: 1.16).
*
* Extra video frame flags
*/
typedef enum {
GST_VIDEO_FRAME_FLAG_NONE = 0,
GST_VIDEO_FRAME_FLAG_INTERLACED = (1 << 0),
GST_VIDEO_FRAME_FLAG_TFF = (1 << 1),
GST_VIDEO_FRAME_FLAG_RFF = (1 << 2),
GST_VIDEO_FRAME_FLAG_ONEFIELD = (1 << 3),
GST_VIDEO_FRAME_FLAG_MULTIPLE_VIEW = (1 << 4),
GST_VIDEO_FRAME_FLAG_FIRST_IN_BUNDLE = (1 << 5),
GST_VIDEO_FRAME_FLAG_TOP_FIELD = GST_VIDEO_FRAME_FLAG_TFF |
GST_VIDEO_FRAME_FLAG_ONEFIELD,
GST_VIDEO_FRAME_FLAG_BOTTOM_FIELD = GST_VIDEO_FRAME_FLAG_ONEFIELD,
} GstVideoFrameFlags;
/* circular dependency, need to include this after defining the enums */
#include <gst/video/video-format.h>
#include <gst/video/video-info.h>
/**
* GstVideoFrame:
* @info: the #GstVideoInfo
* @flags: #GstVideoFrameFlags for the frame
* @buffer: the mapped buffer
* @meta: pointer to metadata if any
* @id: id of the mapped frame. the id can for example be used to
* indentify the frame in case of multiview video.
* @data: pointers to the plane data
* @map: mappings of the planes
*
* A video frame obtained from gst_video_frame_map()
*/
struct _GstVideoFrame {
GstVideoInfo info;
GstVideoFrameFlags flags;
GstBuffer *buffer;
gpointer meta;
gint id;
gpointer data[GST_VIDEO_MAX_PLANES];
GstMapInfo map[GST_VIDEO_MAX_PLANES];
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GST_VIDEO_API
gboolean gst_video_frame_map (GstVideoFrame *frame, GstVideoInfo *info,
GstBuffer *buffer, GstMapFlags flags);
GST_VIDEO_API
gboolean gst_video_frame_map_id (GstVideoFrame *frame, GstVideoInfo *info,
GstBuffer *buffer, gint id, GstMapFlags flags);
GST_VIDEO_API
void gst_video_frame_unmap (GstVideoFrame *frame);
GST_VIDEO_API
gboolean gst_video_frame_copy (GstVideoFrame *dest, const GstVideoFrame *src);
GST_VIDEO_API
gboolean gst_video_frame_copy_plane (GstVideoFrame *dest, const GstVideoFrame *src,
guint plane);
/* general info */
#define GST_VIDEO_FRAME_FORMAT(f) (GST_VIDEO_INFO_FORMAT(&(f)->info))
#define GST_VIDEO_FRAME_WIDTH(f) (GST_VIDEO_INFO_WIDTH(&(f)->info))
#define GST_VIDEO_FRAME_HEIGHT(f) (GST_VIDEO_INFO_HEIGHT(&(f)->info))
#define GST_VIDEO_FRAME_SIZE(f) (GST_VIDEO_INFO_SIZE(&(f)->info))
/* flags */
#define GST_VIDEO_FRAME_FLAGS(f) ((f)->flags)
#define GST_VIDEO_FRAME_FLAG_IS_SET(f,fl) ((GST_VIDEO_FRAME_FLAGS(f) & (fl)) == (fl))
#define GST_VIDEO_FRAME_IS_INTERLACED(f) (GST_VIDEO_FRAME_FLAG_IS_SET(f, GST_VIDEO_FRAME_FLAG_INTERLACED))
#define GST_VIDEO_FRAME_IS_TFF(f) (GST_VIDEO_FRAME_FLAG_IS_SET(f, GST_VIDEO_FRAME_FLAG_TFF))
#define GST_VIDEO_FRAME_IS_RFF(f) (GST_VIDEO_FRAME_FLAG_IS_SET(f, GST_VIDEO_FRAME_FLAG_RFF))
#define GST_VIDEO_FRAME_IS_ONEFIELD(f) (GST_VIDEO_FRAME_FLAG_IS_SET(f, GST_VIDEO_FRAME_FLAG_ONEFIELD))
#define GST_VIDEO_FRAME_IS_TOP_FIELD(f) (GST_VIDEO_FRAME_FLAG_IS_SET(f, GST_VIDEO_FRAME_FLAG_TOP_FIELD))
#define GST_VIDEO_FRAME_IS_BOTTOM_FIELD(f) (GST_VIDEO_FRAME_FLAG_IS_SET(f, GST_VIDEO_FRAME_FLAG_BOTTOM_FIELD))
/* dealing with planes */
#define GST_VIDEO_FRAME_N_PLANES(f) (GST_VIDEO_INFO_N_PLANES(&(f)->info))
#define GST_VIDEO_FRAME_PLANE_DATA(f,p) ((f)->data[p])
#define GST_VIDEO_FRAME_PLANE_OFFSET(f,p) (GST_VIDEO_INFO_PLANE_OFFSET(&(f)->info,(p)))
#define GST_VIDEO_FRAME_PLANE_STRIDE(f,p) (GST_VIDEO_INFO_PLANE_STRIDE(&(f)->info,(p)))
/* dealing with components */
#define GST_VIDEO_FRAME_N_COMPONENTS(f) GST_VIDEO_INFO_N_COMPONENTS(&(f)->info)
#define GST_VIDEO_FRAME_COMP_DEPTH(f,c) GST_VIDEO_INFO_COMP_DEPTH(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_DATA(f,c) GST_VIDEO_INFO_COMP_DATA(&(f)->info,(f)->data,(c))
#define GST_VIDEO_FRAME_COMP_STRIDE(f,c) GST_VIDEO_INFO_COMP_STRIDE(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_OFFSET(f,c) GST_VIDEO_INFO_COMP_OFFSET(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_WIDTH(f,c) GST_VIDEO_INFO_COMP_WIDTH(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_HEIGHT(f,c) GST_VIDEO_INFO_COMP_HEIGHT(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_PLANE(f,c) GST_VIDEO_INFO_COMP_PLANE(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_PSTRIDE(f,c) GST_VIDEO_INFO_COMP_PSTRIDE(&(f)->info,(c))
#define GST_VIDEO_FRAME_COMP_POFFSET(f,c) GST_VIDEO_INFO_COMP_POFFSET(&(f)->info,(c))
/* buffer flags */
/**
* GstVideoBufferFlags:
* @GST_VIDEO_BUFFER_FLAG_INTERLACED: If the #GstBuffer is interlaced. In mixed
* interlace-mode, this flags specifies if the frame is
* interlaced or progressive.
* @GST_VIDEO_BUFFER_FLAG_TFF: If the #GstBuffer is interlaced, then the first field
* in the video frame is the top field. If unset, the
* bottom field is first.
* @GST_VIDEO_BUFFER_FLAG_RFF: If the #GstBuffer is interlaced, then the first field
* (as defined by the %GST_VIDEO_BUFFER_FLAG_TFF flag setting)
* is repeated.
* @GST_VIDEO_BUFFER_FLAG_ONEFIELD: If the #GstBuffer is interlaced, then only the
* first field (as defined by the %GST_VIDEO_BUFFER_FLAG_TFF
* flag setting) is to be displayed (Since: 1.16).
* @GST_VIDEO_BUFFER_FLAG_MULTIPLE_VIEW: The #GstBuffer contains one or more specific views,
* such as left or right eye view. This flags is set on
* any buffer that contains non-mono content - even for
* streams that contain only a single viewpoint. In mixed
* mono / non-mono streams, the absense of the flag marks
* mono buffers.
* @GST_VIDEO_BUFFER_FLAG_FIRST_IN_BUNDLE: When conveying stereo/multiview content with
* frame-by-frame methods, this flag marks the first buffer
* in a bundle of frames that belong together.
* @GST_VIDEO_BUFFER_FLAG_TOP_FIELD: The video frame has the top field only. This is the
* same as GST_VIDEO_BUFFER_FLAG_TFF |
* GST_VIDEO_BUFFER_FLAG_ONEFIELD (Since: 1.16).
* @GST_VIDEO_BUFFER_FLAG_BOTTOM_FIELD: The video frame has the bottom field only. This is
* the same as GST_VIDEO_BUFFER_FLAG_ONEFIELD
* (GST_VIDEO_BUFFER_FLAG_TFF flag unset) (Since: 1.16).
* @GST_VIDEO_BUFFER_FLAG_LAST: Offset to define more flags
*
* Additional video buffer flags. These flags can potentially be used on any
* buffers carrying closed caption data, or video data - even encoded data.
*
* Note that these are only valid for #GstCaps of type: video/... and caption/...
* They can conflict with other extended buffer flags.
*/
typedef enum {
GST_VIDEO_BUFFER_FLAG_INTERLACED = (GST_BUFFER_FLAG_LAST << 0),
GST_VIDEO_BUFFER_FLAG_TFF = (GST_BUFFER_FLAG_LAST << 1),
GST_VIDEO_BUFFER_FLAG_RFF = (GST_BUFFER_FLAG_LAST << 2),
GST_VIDEO_BUFFER_FLAG_ONEFIELD = (GST_BUFFER_FLAG_LAST << 3),
GST_VIDEO_BUFFER_FLAG_MULTIPLE_VIEW = (GST_BUFFER_FLAG_LAST << 4),
GST_VIDEO_BUFFER_FLAG_FIRST_IN_BUNDLE = (GST_BUFFER_FLAG_LAST << 5),
GST_VIDEO_BUFFER_FLAG_TOP_FIELD = GST_VIDEO_BUFFER_FLAG_TFF |
GST_VIDEO_BUFFER_FLAG_ONEFIELD,
GST_VIDEO_BUFFER_FLAG_BOTTOM_FIELD = GST_VIDEO_BUFFER_FLAG_ONEFIELD,
GST_VIDEO_BUFFER_FLAG_LAST = (GST_BUFFER_FLAG_LAST << 8)
} GstVideoBufferFlags;
/**
* GstVideoFrameMapFlags:
* @GST_VIDEO_FRAME_MAP_FLAG_NO_REF: Don't take another reference of the buffer and store it in
* the GstVideoFrame. This makes sure that the buffer stays
* writable while the frame is mapped, but requires that the
* buffer reference stays valid until the frame is unmapped again.
* @GST_VIDEO_FRAME_MAP_FLAG_LAST: Offset to define more flags
*
* Additional mapping flags for gst_video_frame_map().
*
* Since: 1.6
*/
typedef enum {
GST_VIDEO_FRAME_MAP_FLAG_NO_REF = (GST_MAP_FLAG_LAST << 0),
GST_VIDEO_FRAME_MAP_FLAG_LAST = (GST_MAP_FLAG_LAST << 8)
/* 8 more flags possible afterwards */
} GstVideoFrameMapFlags;
G_END_DECLS
#endif /* __GST_VIDEO_FRAME_H__ */
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