GstVulkanFormat

GstVulkanFormatInfo

Members

format (VkFormat) –

the Vulkan format being described

name (const gchar *) –

name of this format

scaling (GstVulkanFormatScaling) –

how raw data is interpreted and scaled

flags (GstVulkanFormatFlags) –

flags that apply to this format

bits (guint) –

The number of bits used to pack data items. This can be less than 8 when multiple pixels are stored in a byte. for values > 8 multiple bytes should be read according to the endianness flag before applying the shift and mask. n_components; number of components in this format

n_components (guint) –
No description available
shift (guint8 *) –

the number of bits to shift away to get the component data

depth (guint8 *) –

the depth in bits for each component

pixel_stride (gint8 *) –
No description available
n_planes (guint) –

the number of planes for this format. The number of planes can be less than the amount of components when multiple components are packed into one plane.

plane (guint8 *) –

the plane number where a component can be found

poffset (guint8 *) –

the offset in the plane where the first pixel of the components can be found.

w_sub (guint8 *) –

subsampling factor of the width for the component. Use GST_VIDEO_SUB_SCALE to scale a width.

h_sub (guint8 *) –

subsampling factor of the height for the component. Use GST_VIDEO_SUB_SCALE to scale a height.

aspect (VkImageAspectFlags) –

image aspect of this format

Since : 1.18

GstVulkan.VulkanFormatInfo

Members

format (Vulkan.Format) –

the Vulkan format being described

name (String) –

name of this format

how raw data is interpreted and scaled

flags that apply to this format

bits (Number) –

The number of bits used to pack data items. This can be less than 8 when multiple pixels are stored in a byte. for values > 8 multiple bytes should be read according to the endianness flag before applying the shift and mask. n_components; number of components in this format

n_components (Number) –
No description available
shift ([ Number ]) –

the number of bits to shift away to get the component data

depth ([ Number ]) –

the depth in bits for each component

pixel_stride ([ Number ]) –
No description available
n_planes (Number) –

the number of planes for this format. The number of planes can be less than the amount of components when multiple components are packed into one plane.

plane ([ Number ]) –

the plane number where a component can be found

poffset ([ Number ]) –

the offset in the plane where the first pixel of the components can be found.

w_sub ([ Number ]) –

subsampling factor of the width for the component. Use GST_VIDEO_SUB_SCALE to scale a width.

h_sub ([ Number ]) –

subsampling factor of the height for the component. Use GST_VIDEO_SUB_SCALE to scale a height.

aspect (Vulkan.ImageAspectFlags) –

image aspect of this format

Since : 1.18

GstVulkan.VulkanFormatInfo

Members

format (Vulkan.Format) –

the Vulkan format being described

name (str) –

name of this format

how raw data is interpreted and scaled

flags that apply to this format

bits (int) –

The number of bits used to pack data items. This can be less than 8 when multiple pixels are stored in a byte. for values > 8 multiple bytes should be read according to the endianness flag before applying the shift and mask. n_components; number of components in this format

n_components (int) –
No description available
shift ([ int ]) –

the number of bits to shift away to get the component data

depth ([ int ]) –

the depth in bits for each component

pixel_stride ([ int ]) –
No description available
n_planes (int) –

the number of planes for this format. The number of planes can be less than the amount of components when multiple components are packed into one plane.

plane ([ int ]) –

the plane number where a component can be found

poffset ([ int ]) –

the offset in the plane where the first pixel of the components can be found.

w_sub ([ int ]) –

subsampling factor of the width for the component. Use GST_VIDEO_SUB_SCALE to scale a width.

h_sub ([ int ]) –

subsampling factor of the height for the component. Use GST_VIDEO_SUB_SCALE to scale a height.

aspect (Vulkan.ImageAspectFlags) –

image aspect of this format

Since : 1.18

Functions

gst_vulkan_format_from_video_info 

VkFormat
gst_vulkan_format_from_video_info (GstVideoInfo * v_info,
                                   guint plane)

Parameters:

v_info –

the GstVideoInfo

plane –

the plane

Returns –

the VkFormat to use for v_format and plane

Since : 1.18

gst_vulkan_format_from_video_info_2 

gboolean
gst_vulkan_format_from_video_info_2 (GstVulkanPhysicalDevice * physical_device,
                                     GstVideoInfo * info,
                                     VkImageTiling tiling,
                                     gboolean no_multiplane,
                                     VkImageUsageFlags requested_usage,
                                     VkFormat* fmts,
                                     int* n_imgs,
                                     VkImageUsageFlags* usage)

Parameters:

physical_device –

a GstVulkanPhysicalDevice

info –

the GstVideoInfo

tiling –

the tiling to use

no_multiplane –

query for vulkan formats without multiple images

requested_usage –
No description available
fmts ( [out][arrayfixed-size=4]) –

Vulkan formats per image/plane

n_imgs ( [out]) –

number of images/planes used by the Vulkan format

usage ( [out]) –

The potential usage of the format

Returns –

TRUE if requested GStreamer format maps to a Vulkan format and its properties.

Since : 1.24

gst_vulkan_format_get_aspect 

guint
gst_vulkan_format_get_aspect (VkFormat format)

Parameters:

format –

Vulkan Format

Returns –

the format aspect

Since : 1.24

GstVulkan.prototype.vulkan_format_get_aspect 

function GstVulkan.prototype.vulkan_format_get_aspect(format: Vulkan.Format): {
    // javascript wrapper for 'gst_vulkan_format_get_aspect'
}

Parameters:

format (Vulkan.Format) –

Vulkan Format

Returns (Number) –

the format aspect

Since : 1.24

GstVulkan.vulkan_format_get_aspect 

def GstVulkan.vulkan_format_get_aspect (format):
    #python wrapper for 'gst_vulkan_format_get_aspect'

Parameters:

format (Vulkan.Format) –

Vulkan Format

Returns (int) –

the format aspect

Since : 1.24

gst_vulkan_format_get_info 

const GstVulkanFormatInfo *
gst_vulkan_format_get_info (VkFormat format)

Parameters:

format –

a valid VkFormat

Returns ( [nullable]) –

the GstVulkanFormatInfo for format or NULL

Since : 1.18

GstVulkan.prototype.vulkan_format_get_info 

function GstVulkan.prototype.vulkan_format_get_info(format: Vulkan.Format): {
    // javascript wrapper for 'gst_vulkan_format_get_info'
}

Parameters:

format (Vulkan.Format) –

a valid VkFormat

the GstVulkan.VulkanFormatInfo for format or null

Since : 1.18

GstVulkan.vulkan_format_get_info 

def GstVulkan.vulkan_format_get_info (format):
    #python wrapper for 'gst_vulkan_format_get_info'

Parameters:

format (Vulkan.Format) –

a valid VkFormat

the GstVulkan.VulkanFormatInfo for format or None

Since : 1.18

gst_vulkan_format_to_video_format 

GstVideoFormat
gst_vulkan_format_to_video_format (VkFormat vk_format)

Parameters:

vk_format –

the Vulkan format to convert

Returns –

the GstVideoFormat that maps to vk_format

Since : 1.24

GstVulkan.prototype.vulkan_format_to_video_format 

function GstVulkan.prototype.vulkan_format_to_video_format(vk_format: Vulkan.Format): {
    // javascript wrapper for 'gst_vulkan_format_to_video_format'
}

Parameters:

vk_format (Vulkan.Format) –

the Vulkan format to convert

Returns (GstVideo.VideoFormat) –

the GstVideo.VideoFormat that maps to vk_format

Since : 1.24

GstVulkan.vulkan_format_to_video_format 

def GstVulkan.vulkan_format_to_video_format (vk_format):
    #python wrapper for 'gst_vulkan_format_to_video_format'

Parameters:

vk_format (Vulkan.Format) –

the Vulkan format to convert

Returns (GstVideo.VideoFormat) –

the GstVideo.VideoFormat that maps to vk_format

Since : 1.24

Enumerations

GstVulkanFormatFlags

Members
GST_VULKAN_FORMAT_FLAG_YUV (1) –

is a YUV format

GST_VULKAN_FORMAT_FLAG_RGB (2) –

is a RGB format

GST_VULKAN_FORMAT_FLAG_ALPHA (4) –

has an alpha channel

GST_VULKAN_FORMAT_FLAG_LE (8) –

data is stored in little-endiate byte order

GST_VULKAN_FORMAT_FLAG_COMPLEX (16) –

data is stored complex and cannot be read/write only using the information in the GstVulkanFormatInfo

Since : 1.18

GstVulkan.VulkanFormatFlags

Members
GstVulkan.VulkanFormatFlags.YUV (1) –

is a YUV format

GstVulkan.VulkanFormatFlags.RGB (2) –

is a RGB format

GstVulkan.VulkanFormatFlags.ALPHA (4) –

has an alpha channel

GstVulkan.VulkanFormatFlags.LE (8) –

data is stored in little-endiate byte order

GstVulkan.VulkanFormatFlags.COMPLEX (16) –

data is stored complex and cannot be read/write only using the information in the GstVulkan.VulkanFormatInfo

Since : 1.18

GstVulkan.VulkanFormatFlags

Members
GstVulkan.VulkanFormatFlags.YUV (1) –

is a YUV format

GstVulkan.VulkanFormatFlags.RGB (2) –

is a RGB format

GstVulkan.VulkanFormatFlags.ALPHA (4) –

has an alpha channel

GstVulkan.VulkanFormatFlags.LE (8) –

data is stored in little-endiate byte order

GstVulkan.VulkanFormatFlags.COMPLEX (16) –

data is stored complex and cannot be read/write only using the information in the GstVulkan.VulkanFormatInfo

Since : 1.18

GstVulkanFormatScaling

Members
GST_VULKAN_FORMAT_SCALING_UNORM (1) –

[0, 2^n - 1] -> [0.0, 1.0]

GST_VULKAN_FORMAT_SCALING_SNORM (2) –

[-2^(n-1), 2^(n-1) - 1] -> [-1.0, 1.0]

GST_VULKAN_FORMAT_SCALING_USCALED (3) –

[0, 2^n - 1] -> [0.0, float(2^n - 1)]

GST_VULKAN_FORMAT_SCALING_SSCALED (4) –

[-2^(n-1), 2^(n-1) - 1] -> [float(-2^(n-1)), float(2^(n-1) - 1)]

GST_VULKAN_FORMAT_SCALING_UINT (5) –

[0, 2^n - 1] -> [0, 2^n - 1]

GST_VULKAN_FORMAT_SCALING_SINT (6) –

[-2^(n-1), 2^(n-1) - 1] -> [-2^(n-1), 2^(n-1) - 1]

GST_VULKAN_FORMAT_SCALING_SRGB (7) –

GST_VULKAN_FORMAT_SCALING_UNORM but the first three components are gamma corrected for the sRGB colour space.

Since : 1.18

GstVulkan.VulkanFormatScaling

Members
GstVulkan.VulkanFormatScaling.UNORM (1) –

[0, 2^n - 1] -> [0.0, 1.0]

GstVulkan.VulkanFormatScaling.SNORM (2) –

[-2^(n-1), 2^(n-1) - 1] -> [-1.0, 1.0]

GstVulkan.VulkanFormatScaling.USCALED (3) –

[0, 2^n - 1] -> [0.0, float(2^n - 1)]

GstVulkan.VulkanFormatScaling.SSCALED (4) –

[-2^(n-1), 2^(n-1) - 1] -> [float(-2^(n-1)), float(2^(n-1) - 1)]

GstVulkan.VulkanFormatScaling.UINT (5) –

[0, 2^n - 1] -> [0, 2^n - 1]

GstVulkan.VulkanFormatScaling.SINT (6) –

[-2^(n-1), 2^(n-1) - 1] -> [-2^(n-1), 2^(n-1) - 1]

GstVulkan.VulkanFormatScaling.SRGB (7) –

GST_VULKAN_FORMAT_SCALING_UNORM but the first three components are gamma corrected for the sRGB colour space.

Since : 1.18

GstVulkan.VulkanFormatScaling

Members
GstVulkan.VulkanFormatScaling.UNORM (1) –

[0, 2^n - 1] -> [0.0, 1.0]

GstVulkan.VulkanFormatScaling.SNORM (2) –

[-2^(n-1), 2^(n-1) - 1] -> [-1.0, 1.0]

GstVulkan.VulkanFormatScaling.USCALED (3) –

[0, 2^n - 1] -> [0.0, float(2^n - 1)]

GstVulkan.VulkanFormatScaling.SSCALED (4) –

[-2^(n-1), 2^(n-1) - 1] -> [float(-2^(n-1)), float(2^(n-1) - 1)]

GstVulkan.VulkanFormatScaling.UINT (5) –

[0, 2^n - 1] -> [0, 2^n - 1]

GstVulkan.VulkanFormatScaling.SINT (6) –

[-2^(n-1), 2^(n-1) - 1] -> [-2^(n-1), 2^(n-1) - 1]

GstVulkan.VulkanFormatScaling.SRGB (7) –

GST_VULKAN_FORMAT_SCALING_UNORM but the first three components are gamma corrected for the sRGB colour space.

Since : 1.18

Constants

GST_VULKAN_MAX_COMPONENTS 

#define GST_VULKAN_MAX_COMPONENTS 4

Since : 1.18

GstVulkan.VULKAN_MAX_COMPONENTS

Since : 1.18

GstVulkan.VULKAN_MAX_COMPONENTS

Since : 1.18

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