Source repositoryvulkan_encode.h File Reference

Declarations for FFmpeg Vulkan Video encoder. More...

#include "src/platform/common.h"
#include <cstdint>
#include <map>
#include <vector>

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Functions
std::map< std::uint32_t, std::vector< std::uint64_t > >	vk::get_supported_capture_modifiers ()
	Query DRM format modifiers supported by the Vulkan driver for common capture formats.
std::unique_ptr< platf::avcodec_encode_device_t >	vk::make_avcodec_encode_device_ram (int width, int height)
	Create a Vulkan encode device for RAM capture.
std::unique_ptr< platf::avcodec_encode_device_t >	vk::make_avcodec_encode_device_vram (int width, int height, int offset_x, int offset_y)
	Create a Vulkan encode device for VRAM capture.
bool	vk::validate ()
	Check if FFmpeg Vulkan Video encoding is available.
int	vk::vulkan_init_avcodec_hardware_input_buffer (platf::avcodec_encode_device_t *encode_device, AVBufferRef **hw_device_buf)
	Initialize Vulkan hardware device for FFmpeg encoding.

Detailed Description

Declarations for FFmpeg Vulkan Video encoder.

Function Documentation

get_supported_capture_modifiers()

std::map< std::uint32_t, std::vector< std::uint64_t > > vk::get_supported_capture_modifiers

(

)

Query DRM format modifiers supported by the Vulkan driver for common capture formats.

Creates a temporary Vulkan instance and physical device to query modifier support via VK_EXT_image_drm_format_modifier extension.

Returns

Map of DRM format to supported modifiers, or empty map if query fails.

This queries the Vulkan driver for modifiers it can import via VK_EXT_image_drm_format_modifier. The returned map is keyed by DRM fourcc format code (e.g. DRM_FORMAT_ARGB8888).

Returns

Map of DRM format to supported modifiers, or empty map if query fails.

make_avcodec_encode_device_ram()

std::unique_ptr< platf::avcodec_encode_device_t > vk::make_avcodec_encode_device_ram	(	int	width,
		int	height )

Create a Vulkan encode device for RAM capture.

Parameters

width	Frame or display width in pixels.
height	Frame or display height in pixels.

Returns

Constructed AVCodec encode device ram object.

make_avcodec_encode_device_vram()

std::unique_ptr< platf::avcodec_encode_device_t > vk::make_avcodec_encode_device_vram	(	int	width,
		int	height,
		int	offset_x,
		int	offset_y )

Create a Vulkan encode device for VRAM capture.

Parameters

width	Frame or display width in pixels.
height	Frame or display height in pixels.
offset_x	Offset x.
offset_y	Offset y.

Returns

Constructed AVCodec encode device VRAM object.

validate()

bool vk::validate

(

)

Check if FFmpeg Vulkan Video encoding is available.

Returns

True when FFmpeg Vulkan Video encoding is available.

vulkan_init_avcodec_hardware_input_buffer()

int vk::vulkan_init_avcodec_hardware_input_buffer	(	platf::avcodec_encode_device_t *	encode_device,
		AVBufferRef **	hw_device_buf )

Initialize Vulkan hardware device for FFmpeg encoding.

Parameters

encode_device	The encode device (vk_t).
hw_device_buf	Output hardware device buffer.

Returns

0 on success, negative on error.