#include <spherical.h>

Открытые атрибуты
enum AVSphericalProjection	projection

uint32_t	padding

Initial orientation
There fields describe additional rotations applied to the sphere after the video frame is mapped onto it. The sphere is rotated around the viewer, who remains stationary. The order of transformation is always yaw, followed by pitch, and finally by roll. The coordinate system matches the one defined in OpenGL, where the forward vector (z) is coming out of screen, and it is equivalent to a rotation matrix of R = r_y(yaw) * r_x(pitch) * r_z(roll). A positive yaw rotates the portion of the sphere in front of the viewer toward their right. A positive pitch rotates the portion of the sphere in front of the viewer upwards. A positive roll tilts the portion of the sphere in front of the viewer to the viewer's right. These values are exported as 16.16 fixed point. See this equirectangular projection as example: Yaw -180 0 180 90 +-------------+-------------+ 180 \| \| \| up P \| \| \| y\| forward i \| ^ \| \| /z t 0 +-------------X-------------+ 0 Roll \| / c \| \| \| \| / h \| \| \| 0\|/_____right \| \| \| x -90 +-------------+-------------+ -180 X - the default camera center ^ - the default up vector
int32_t	yaw
	Rotation around the up vector [-180, 180]. Подробнее...

int32_t	pitch
	Rotation around the right vector [-90, 90]. Подробнее...

int32_t	roll
	Rotation around the forward vector [-180, 180]. Подробнее...

Bounding rectangle
These fields indicate the location of the current tile, and where it should be mapped relative to the original surface. They are exported as 0.32 fixed point, and can be converted to classic pixel values with av_spherical_bounds(). +----------------+----------+ \| \|bound_top \| \| +--------+ \| \| bound_left \|tile \| \| +<---------->\| \|<--->+bound_right \| +--------+ \| \| \| \| \| bound_bottom\| \| +----------------+----------+ If needed, the original video surface dimensions can be derived by adding the current stream or frame size to the related bounds, like in the following example: original_width = tile->width + bound_left + bound_right; original_height = tile->height + bound_top + bound_bottom; Заметки These values are valid only for the tiled equirectangular projection type (AV_SPHERICAL_EQUIRECTANGULAR_TILE), and should be ignored in all other cases.
uint32_t	bound_left
	Distance from the left edge. Подробнее...

uint32_t	bound_top
	Distance from the top edge. Подробнее...

uint32_t	bound_right
	Distance from the right edge. Подробнее...

uint32_t	bound_bottom
	Distance from the bottom edge. Подробнее...

Подробное описание

This structure describes how to handle spherical videos, outlining information about projection, initial layout, and any other view modifier.

Заметки: The struct must be allocated with av_spherical_alloc() and its size is not a part of the public ABI.

См. определение в файле spherical.h строка 82

Данные класса

◆ projection

enum AVSphericalProjection AVSphericalMapping::projection

Projection type.

См. определение в файле spherical.h строка 86

◆ yaw

int32_t AVSphericalMapping::yaw

Rotation around the up vector [-180, 180].

См. определение в файле spherical.h строка 126

◆ pitch

int32_t AVSphericalMapping::pitch

Rotation around the right vector [-90, 90].

См. определение в файле spherical.h строка 127

◆ roll

int32_t AVSphericalMapping::roll

Rotation around the forward vector [-180, 180].

См. определение в файле spherical.h строка 128

◆ bound_left

uint32_t AVSphericalMapping::bound_left

Distance from the left edge.

См. определение в файле spherical.h строка 167

◆ bound_top

uint32_t AVSphericalMapping::bound_top

Distance from the top edge.

См. определение в файле spherical.h строка 168

◆ bound_right

uint32_t AVSphericalMapping::bound_right

Distance from the right edge.

См. определение в файле spherical.h строка 169

◆ bound_bottom

uint32_t AVSphericalMapping::bound_bottom

Distance from the bottom edge.

См. определение в файле spherical.h строка 170

◆ padding

uint32_t AVSphericalMapping::padding

Number of pixels to pad from the edge of each cube face.

Заметки: This value is valid for only for the cubemap projection type (AV_SPHERICAL_CUBEMAP), and should be ignored in all other cases.

См. определение в файле spherical.h строка 182

Объявления и описания членов структуры находятся в файле:

C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/spherical.h

Открытые атрибуты