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gstreamer/gst-libs/gst/video/video-info.h
Tim-Philipp Müller ae429de8f6 video: GST_EXPORT -> GST_VIDEO_API 
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.
2018-03-13 12:16:42 +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_INFO_H__
#define __GST_VIDEO_INFO_H__
#include <gst/gst.h>
#include <gst/video/video-format.h>
#include <gst/video/video-color.h>
G_BEGIN_DECLS
#include <gst/video/video-enumtypes.h>
typedef struct _GstVideoInfo GstVideoInfo;
/**
* GstVideoInterlaceMode:
* @GST_VIDEO_INTERLACE_MODE_PROGRESSIVE: all frames are progressive
* @GST_VIDEO_INTERLACE_MODE_INTERLEAVED: 2 fields are interleaved in one video
* frame. Extra buffer flags describe the field order.
* @GST_VIDEO_INTERLACE_MODE_MIXED: frames contains both interlaced and
* progressive video, the buffer flags describe the frame and fields.
* @GST_VIDEO_INTERLACE_MODE_FIELDS: 2 fields are stored in one buffer, use the
* frame ID to get access to the required field. For multiview (the
* 'views' property > 1) the fields of view N can be found at frame ID
* (N * 2) and (N * 2) + 1.
* Each field has only half the amount of lines as noted in the
* height property. This mode requires multiple GstVideoMeta metadata
* to describe the fields.
*
* The possible values of the #GstVideoInterlaceMode describing the interlace
* mode of the stream.
*/
typedef enum {
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE = 0,
GST_VIDEO_INTERLACE_MODE_INTERLEAVED,
GST_VIDEO_INTERLACE_MODE_MIXED,
GST_VIDEO_INTERLACE_MODE_FIELDS
} GstVideoInterlaceMode;
GST_VIDEO_API
const gchar * gst_video_interlace_mode_to_string (GstVideoInterlaceMode mode);
GST_VIDEO_API
GstVideoInterlaceMode gst_video_interlace_mode_from_string (const gchar * mode);
/**
* GstVideoMultiviewMode:
* @GST_VIDEO_MULTIVIEW_MODE_NONE: A special value indicating
* no multiview information. Used in GstVideoInfo and other places to
* indicate that no specific multiview handling has been requested or
* provided. This value is never carried on caps.
* @GST_VIDEO_MULTIVIEW_MODE_MONO: All frames are monoscopic.
* @GST_VIDEO_MULTIVIEW_MODE_LEFT: All frames represent a left-eye view.
* @GST_VIDEO_MULTIVIEW_MODE_RIGHT: All frames represent a right-eye view.
* @GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE: Left and right eye views are
* provided in the left and right half of the frame respectively.
* @GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX: Left and right eye
* views are provided in the left and right half of the frame, but
* have been sampled using quincunx method, with half-pixel offset
* between the 2 views.
* @GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED: Alternating vertical
* columns of pixels represent the left and right eye view respectively.
* @GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED: Alternating horizontal
* rows of pixels represent the left and right eye view respectively.
* @GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM: The top half of the frame
* contains the left eye, and the bottom half the right eye.
* @GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD: Pixels are arranged with
* alternating pixels representing left and right eye views in a
* checkerboard fashion.
* @GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME: Left and right eye views
* are provided in separate frames alternately.
* @GST_VIDEO_MULTIVIEW_MODE_MULTIVIEW_FRAME_BY_FRAME: Multiple
* independent views are provided in separate frames in sequence.
* This method only applies to raw video buffers at the moment.
* Specific view identification is via the #GstVideoMultiviewMeta
* and #GstVideoMeta(s) on raw video buffers.
* @GST_VIDEO_MULTIVIEW_MODE_SEPARATED: Multiple views are
* provided as separate #GstMemory framebuffers attached to each
* #GstBuffer, described by the #GstVideoMultiviewMeta
* and #GstVideoMeta(s)
*
* All possible stereoscopic 3D and multiview representations.
* In conjunction with #GstVideoMultiviewFlags, describes how
* multiview content is being transported in the stream.
*/
typedef enum {
GST_VIDEO_MULTIVIEW_MODE_NONE = -1,
GST_VIDEO_MULTIVIEW_MODE_MONO = 0,
/* Single view modes */
GST_VIDEO_MULTIVIEW_MODE_LEFT,
GST_VIDEO_MULTIVIEW_MODE_RIGHT,
/* Stereo view modes */
GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE,
GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX,
GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED,
GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED,
GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM,
GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD,
/* Padding for new frame packing modes */
GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME = 32,
/* Multivew mode(s) */
GST_VIDEO_MULTIVIEW_MODE_MULTIVIEW_FRAME_BY_FRAME,
GST_VIDEO_MULTIVIEW_MODE_SEPARATED
/* future expansion for annotated modes */
} GstVideoMultiviewMode;
/**
* GstVideoMultiviewFramePacking:
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_NONE: A special value indicating
* no frame packing info.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_MONO: All frames are monoscopic.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_LEFT: All frames represent a left-eye view.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_RIGHT: All frames represent a right-eye view.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_SIDE_BY_SIDE: Left and right eye views are
* provided in the left and right half of the frame respectively.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_SIDE_BY_SIDE_QUINCUNX: Left and right eye
* views are provided in the left and right half of the frame, but
* have been sampled using quincunx method, with half-pixel offset
* between the 2 views.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_COLUMN_INTERLEAVED: Alternating vertical
* columns of pixels represent the left and right eye view respectively.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_ROW_INTERLEAVED: Alternating horizontal
* rows of pixels represent the left and right eye view respectively.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_TOP_BOTTOM: The top half of the frame
* contains the left eye, and the bottom half the right eye.
* @GST_VIDEO_MULTIVIEW_FRAME_PACKING_CHECKERBOARD: Pixels are arranged with
* alternating pixels representing left and right eye views in a
* checkerboard fashion.
*
* #GstVideoMultiviewFramePacking represents the subset of #GstVideoMultiviewMode
* values that can be applied to any video frame without needing extra metadata.
* It can be used by elements that provide a property to override the
* multiview interpretation of a video stream when the video doesn't contain
* any markers.
*
* This enum is used (for example) on playbin, to re-interpret a played
* video stream as a stereoscopic video. The individual enum values are
* equivalent to and have the same value as the matching #GstVideoMultiviewMode.
*
*/
typedef enum {
GST_VIDEO_MULTIVIEW_FRAME_PACKING_NONE = GST_VIDEO_MULTIVIEW_MODE_NONE,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_MONO = GST_VIDEO_MULTIVIEW_MODE_MONO,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_LEFT = GST_VIDEO_MULTIVIEW_MODE_LEFT,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_RIGHT = GST_VIDEO_MULTIVIEW_MODE_RIGHT,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_SIDE_BY_SIDE = GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_SIDE_BY_SIDE_QUINCUNX = GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_COLUMN_INTERLEAVED = GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_ROW_INTERLEAVED = GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_TOP_BOTTOM = GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM,
GST_VIDEO_MULTIVIEW_FRAME_PACKING_CHECKERBOARD = GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD
} GstVideoMultiviewFramePacking;
#define GST_VIDEO_MULTIVIEW_MAX_FRAME_PACKING GST_VIDEO_MULTIVIEW_FRAME_PACKING_CHECKERBOARD
/**
* GstVideoMultiviewFlags:
* @GST_VIDEO_MULTIVIEW_FLAGS_NONE: No flags
* @GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST: For stereo streams, the
* normal arrangement of left and right views is reversed.
* @GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED: The left view is vertically
* mirrored.
* @GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED: The left view is horizontally
* mirrored.
* @GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED: The right view is
* vertically mirrored.
* @GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED: The right view is
* horizontally mirrored.
* @GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT: For frame-packed
* multiview modes, indicates that the individual
* views have been encoded with half the true width or height
* and should be scaled back up for display. This flag
* is used for overriding input layout interpretation
* by adjusting pixel-aspect-ratio.
* For side-by-side, column interleaved or checkerboard packings, the
* pixel width will be doubled. For row interleaved and top-bottom
* encodings, pixel height will be doubled.
* @GST_VIDEO_MULTIVIEW_FLAGS_MIXED_MONO: The video stream contains both
* mono and multiview portions, signalled on each buffer by the
* absence or presence of the @GST_VIDEO_BUFFER_FLAG_MULTIPLE_VIEW
* buffer flag.
*
* GstVideoMultiviewFlags are used to indicate extra properties of a
* stereo/multiview stream beyond the frame layout and buffer mapping
* that is conveyed in the #GstMultiviewMode.
*/
typedef enum {
GST_VIDEO_MULTIVIEW_FLAGS_NONE = 0,
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST = (1 << 0),
GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED = (1 << 1),
GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED = (1 << 2),
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED = (1 << 3),
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED = (1 << 4),
GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT = (1 << 14),
GST_VIDEO_MULTIVIEW_FLAGS_MIXED_MONO = (1 << 15)
} GstVideoMultiviewFlags;
/**
* GstVideoFlags:
* @GST_VIDEO_FLAG_NONE: no flags
* @GST_VIDEO_FLAG_VARIABLE_FPS: a variable fps is selected, fps_n and fps_d
* denote the maximum fps of the video
* @GST_VIDEO_FLAG_PREMULTIPLIED_ALPHA: Each color has been scaled by the alpha
* value.
*
* Extra video flags
*/
typedef enum {
GST_VIDEO_FLAG_NONE = 0,
GST_VIDEO_FLAG_VARIABLE_FPS = (1 << 0),
GST_VIDEO_FLAG_PREMULTIPLIED_ALPHA = (1 << 1)
} GstVideoFlags;
/**
* GstVideoFieldOrder:
* @GST_VIDEO_FIELD_ORDER_UNKNOWN: unknown field order for interlaced content.
* The actual field order is signalled via buffer flags.
* @GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST: top field is first
* @GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST: bottom field is first
*
* Field order of interlaced content. This is only valid for
* interlace-mode=interleaved and not interlace-mode=mixed. In the case of
* mixed or GST_VIDEO_FIELD_ORDER_UNKOWN, the field order is signalled via
* buffer flags.
*
* Since: 1.12
*/
typedef enum {
GST_VIDEO_FIELD_ORDER_UNKNOWN = 0,
GST_VIDEO_FIELD_ORDER_TOP_FIELD_FIRST = 1,
GST_VIDEO_FIELD_ORDER_BOTTOM_FIELD_FIRST = 2,
} GstVideoFieldOrder;
GST_VIDEO_API
const gchar * gst_video_field_order_to_string (GstVideoFieldOrder order);
GST_VIDEO_API
GstVideoFieldOrder gst_video_field_order_from_string (const gchar * order);
/**
* GstVideoInfo:
* @finfo: the format info of the video
* @interlace_mode: the interlace mode
* @flags: additional video flags
* @width: the width of the video
* @height: the height of the video
* @views: the number of views for multiview video
* @size: the default size of one frame
* @chroma_site: a #GstVideoChromaSite.
* @colorimetry: the colorimetry info
* @par_n: the pixel-aspect-ratio numerator
* @par_d: the pixel-aspect-ratio demnominator
* @fps_n: the framerate numerator
* @fps_d: the framerate demnominator
* @offset: offsets of the planes
* @stride: strides of the planes
* @multiview_mode: delivery mode for multiple views. (Since 1.6)
* @multiview_flags: flags for multiple views configuration (Since 1.6)
*
* Information describing image properties. This information can be filled
* in from GstCaps with gst_video_info_from_caps(). The information is also used
* to store the specific video info when mapping a video frame with
* gst_video_frame_map().
*
* Use the provided macros to access the info in this structure.
*/
struct _GstVideoInfo {
const GstVideoFormatInfo *finfo;
GstVideoInterlaceMode interlace_mode;
GstVideoFlags flags;
gint width;
gint height;
gsize size;
gint views;
GstVideoChromaSite chroma_site;
GstVideoColorimetry colorimetry;
gint par_n;
gint par_d;
gint fps_n;
gint fps_d;
gsize offset[GST_VIDEO_MAX_PLANES];
gint stride[GST_VIDEO_MAX_PLANES];
/* Union preserves padded struct size for backwards compat
* Consumer code should use the accessor macros for fields */
union {
struct {
GstVideoMultiviewMode multiview_mode;
GstVideoMultiviewFlags multiview_flags;
GstVideoFieldOrder field_order;
} abi;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
} ABI;
};
#define GST_TYPE_VIDEO_INFO (gst_video_info_get_type ())
GST_VIDEO_API
GType gst_video_info_get_type (void);
/* general info */
#define GST_VIDEO_INFO_FORMAT(i) (GST_VIDEO_FORMAT_INFO_FORMAT((i)->finfo))
#define GST_VIDEO_INFO_NAME(i) (GST_VIDEO_FORMAT_INFO_NAME((i)->finfo))
#define GST_VIDEO_INFO_IS_YUV(i) (GST_VIDEO_FORMAT_INFO_IS_YUV((i)->finfo))
#define GST_VIDEO_INFO_IS_RGB(i) (GST_VIDEO_FORMAT_INFO_IS_RGB((i)->finfo))
#define GST_VIDEO_INFO_IS_GRAY(i) (GST_VIDEO_FORMAT_INFO_IS_GRAY((i)->finfo))
#define GST_VIDEO_INFO_HAS_ALPHA(i) (GST_VIDEO_FORMAT_INFO_HAS_ALPHA((i)->finfo))
#define GST_VIDEO_INFO_INTERLACE_MODE(i) ((i)->interlace_mode)
#define GST_VIDEO_INFO_IS_INTERLACED(i) ((i)->interlace_mode != GST_VIDEO_INTERLACE_MODE_PROGRESSIVE)
#define GST_VIDEO_INFO_FIELD_ORDER(i) ((i)->ABI.abi.field_order)
#define GST_VIDEO_INFO_FLAGS(i) ((i)->flags)
#define GST_VIDEO_INFO_WIDTH(i) ((i)->width)
#define GST_VIDEO_INFO_HEIGHT(i) ((i)->height)
#define GST_VIDEO_INFO_SIZE(i) ((i)->size)
#define GST_VIDEO_INFO_VIEWS(i) ((i)->views)
#define GST_VIDEO_INFO_PAR_N(i) ((i)->par_n)
#define GST_VIDEO_INFO_PAR_D(i) ((i)->par_d)
#define GST_VIDEO_INFO_FPS_N(i) ((i)->fps_n)
#define GST_VIDEO_INFO_FPS_D(i) ((i)->fps_d)
#define GST_VIDEO_INFO_COLORIMETRY(i) ((i)->colorimetry)
#define GST_VIDEO_INFO_CHROMA_SITE(i) ((i)->chroma_site)
#define GST_VIDEO_INFO_MULTIVIEW_MODE(i) ((i)->ABI.abi.multiview_mode)
#define GST_VIDEO_INFO_MULTIVIEW_FLAGS(i) ((i)->ABI.abi.multiview_flags)
/* dealing with GstVideoInfo flags */
#define GST_VIDEO_INFO_FLAG_IS_SET(i,flag) ((GST_VIDEO_INFO_FLAGS(i) & (flag)) == (flag))
#define GST_VIDEO_INFO_FLAG_SET(i,flag) (GST_VIDEO_INFO_FLAGS(i) |= (flag))
#define GST_VIDEO_INFO_FLAG_UNSET(i,flag) (GST_VIDEO_INFO_FLAGS(i) &= ~(flag))
/* dealing with planes */
#define GST_VIDEO_INFO_N_PLANES(i) (GST_VIDEO_FORMAT_INFO_N_PLANES((i)->finfo))
#define GST_VIDEO_INFO_PLANE_OFFSET(i,p) ((i)->offset[p])
#define GST_VIDEO_INFO_PLANE_STRIDE(i,p) ((i)->stride[p])
/* dealing with components */
#define GST_VIDEO_INFO_N_COMPONENTS(i) GST_VIDEO_FORMAT_INFO_N_COMPONENTS((i)->finfo)
#define GST_VIDEO_INFO_COMP_DEPTH(i,c) GST_VIDEO_FORMAT_INFO_DEPTH((i)->finfo,(c))
#define GST_VIDEO_INFO_COMP_DATA(i,d,c) GST_VIDEO_FORMAT_INFO_DATA((i)->finfo,d,(c))
#define GST_VIDEO_INFO_COMP_OFFSET(i,c) GST_VIDEO_FORMAT_INFO_OFFSET((i)->finfo,(i)->offset,(c))
#define GST_VIDEO_INFO_COMP_STRIDE(i,c) GST_VIDEO_FORMAT_INFO_STRIDE((i)->finfo,(i)->stride,(c))
#define GST_VIDEO_INFO_COMP_WIDTH(i,c) GST_VIDEO_FORMAT_INFO_SCALE_WIDTH((i)->finfo,(c),(i)->width)
#define GST_VIDEO_INFO_COMP_HEIGHT(i,c) GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT((i)->finfo,(c),(i)->height)
#define GST_VIDEO_INFO_COMP_PLANE(i,c) GST_VIDEO_FORMAT_INFO_PLANE((i)->finfo,(c))
#define GST_VIDEO_INFO_COMP_PSTRIDE(i,c) GST_VIDEO_FORMAT_INFO_PSTRIDE((i)->finfo,(c))
#define GST_VIDEO_INFO_COMP_POFFSET(i,c) GST_VIDEO_FORMAT_INFO_POFFSET((i)->finfo,(c))
GST_VIDEO_API
GstVideoInfo * gst_video_info_new (void);
GST_VIDEO_API
void gst_video_info_init (GstVideoInfo *info);
GST_VIDEO_API
GstVideoInfo * gst_video_info_copy (const GstVideoInfo *info);
GST_VIDEO_API
void gst_video_info_free (GstVideoInfo *info);
GST_VIDEO_API
gboolean gst_video_info_set_format (GstVideoInfo *info, GstVideoFormat format,
guint width, guint height);
GST_VIDEO_API
gboolean gst_video_info_from_caps (GstVideoInfo *info, const GstCaps * caps);
GST_VIDEO_API
GstCaps * gst_video_info_to_caps (GstVideoInfo *info);
GST_VIDEO_API
gboolean gst_video_info_convert (GstVideoInfo *info,
GstFormat src_format,
gint64 src_value,
GstFormat dest_format,
gint64 *dest_value);
GST_VIDEO_API
gboolean gst_video_info_is_equal (const GstVideoInfo *info,
const GstVideoInfo *other);
#include <gst/video/video.h>
GST_VIDEO_API
gboolean gst_video_info_align (GstVideoInfo * info, GstVideoAlignment * align);
#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstVideoInfo, gst_video_info_free)
#endif
G_END_DECLS
#endif /* __GST_VIDEO_INFO_H__ */
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