Pixel buffer structures

This section provides an overview on the pixel buffer structures.

vg_lite_buffer_t structure

This structure defines the buffer layout for a VGLite image or memory data.

Used in structures: vg_lite_linear_gradient_t, vg_lite_radial_gradient_t.

Used in init functions: vg_lite_allocate, vg_lite_free, vg_lite_upload_buffer, vg_lite_map, vg_lite_unmap.

Used in blit functions:vg_lite_blit, vg_lite_blit_rect, vg_lite_clear, vg_lite_create_masklayer, vg_lite_fill_masklayer, vg_lite_blend_masklayer, vg_lite_set_masklayer, vg_lite_render_masklayer, vg_lite_destroy_masklayer

Used in draw functions: vg_lite_draw, vg_lite_draw_pattern, vg_lite_draw_grad, vg_lite_draw_radial_grad

vg_lite_buffer_t member	Type	Description
width	vg_lite_int32_t	Width of buffer in pixels
height	vg_lite_int32_t	Height of buffer in pixels
stride	vg_lite_int32_t	Stride in bytes
tiled	vg_lite_buffer_layout_t	Linear or tiled format for buffer enum
format	vg_lite_buffer_format_t	color format enum
handle	vg_lite_pointer	memory handle
memory	vg_lite_pointer	pointer to the start address of the memory
address	vg_lite_uint32_t	GPU address
yuv	vg_lite_yuvinfo_t	YUV format info struct
image_mode	vg_lite_image_mode_t	Blit image mode enum
transparency_mode	vg_lite_transparency_t	Image transparency mode enum
fc_buffer[3]	vg_lite_fc_buffer_t	Three (3) fast clear buffers, reserved YUV format (from March 2023)
compress_mode	vg_lite_compress_mode	Compression mode (from March 2023)
index_endian	vg_lite_index_endian_t	Big/Little Endian setting for index formats (from March 2023)
paintType	vg_lite_paint_type_t	Paint type enum (from May 2023)
fc_enable	vg_lite_int8_t	Enable Image fast clear (moved from Aug 2023)
scissor_layer	vg_lite_int8_t	Get paintcolor from different paint types (from Aug 2023)
premulitplied	vg_lite_int8_t	The RGB pixel values are alpha-premultipled (from Aug 2023)

Parent topic:Pixel buffer structures

vg_lite_fc_buffer_t structure

This structure defines the organization of a fast clear buffer. (from March 2023)

Used in structure: vg_lite_buffer_t.

vg_lite_fc_buffer_t members	Type	Description
width	vg_lite_int32_t	Width of buffer in pixels
height	vg_lite_int32_t	Height of buffer in pixels
stride	vg_lite_int32_t	Stride in bytes
handle	vg_lite_pointer	memory handle as allocated by the VGLite kernel
memory	vg_lite_pointer	logical pointer to the start address of the memory for the CPU
address	vg_lite_uint32_t	address to the buffer’s memory for the GPU hardware
color	vg_lite_uint32_t	The fast clear color value

Parent topic:Pixel buffer structures

vg_lite_yuvinfo_t structure

This structure defines the organization of VGLite YUV data.

Used in structure: vg_lite_buffer_t.

vg_lite_yuvinfo_t member	Type	Description
swizzle	vg_lite_swizzle_t	UV swizzle enum
yuv2rgb	vg_lite_yuv2rgb_t	YUV conversion standard enum
`uv_planar	vg_lite_uint32_t	UV (U) planar address for GPU, generated by driver
v_planar	vg_lite_uint32_t	V planar address for GPU, generated by driver
`alpha_planar	vg_lite_uint32_t	Alpha planar address for GPU, generated by driver
`uv_stride	vg_lite_uint32_t	UV (U) stride in bytes
`v_stride	vg_lite_uint32_t	V planar stride in bytes
alpha_stride	vg_lite_uint32_t	Alpha stride in bytes
`uv_height	vg_lite_uint32_t	UV (U) height in pixels
`v_height	vg_lite_uint32_t	V stride in bytes
uv_memory	vg_lite_pointer	Logical pointer to the UV (U) planar memory
`v_memory	vg_lite_pointer	Logical pointer to the V planar memory
uv_handle	vg_lite_pointer	Memory handle of the UV (U) planar, generated by the driver
v_handle	vg_lite_pointer	Memory handle of the V planar, generated by the driver

Parent topic:Pixel buffer structures

Parent topic:Pixel buffers