longstrip_cfg_t Struct Reference

One-shot configuration handed to longstrip_open. More...

#include <longstrip.h>

Collaboration diagram for longstrip_cfg_t:

Data Fields
jof_pread_fn	pread
	Atlas backing read seam.
void *	pread_ctx
	Context for pread.
uint64_t	atlas_size
	Atlas byte length (for parse).
ra8_tile_cache_t *	cache
	Band cache (decode-on-miss = JOF).
uint32_t	image_id
	Tile-cache key namespace for strip.
uint16_t	viewport_w
	On-screen viewport width, pixels.
uint16_t	viewport_h
	On-screen viewport height, pixels.
longstrip_blit_fn	blit
	Band composite sink.
void *	blit_ctx
	Context for blit.

Detailed Description

One-shot configuration handed to longstrip_open.

The atlas is reached through pread/pread_ctx/atlas_size (same seam jof_parse uses). cache is a tile cache the caller has already initialised with longstrip_tile_decode over the SAME atlas; image_id is the cache key namespace for this strip. The viewport is the on-screen window in pixels; blit composites bands into it.

Invariant

viewport_w and viewport_h are non-zero.

See also

longstrip_open()

Since

0.1.0

Definition at line 160 of file longstrip.h.

Field Documentation

atlas_size

uint64_t longstrip_cfg_t::atlas_size

Atlas byte length (for parse).

Definition at line 163 of file longstrip.h.

Referenced by longstrip_open().

blit

longstrip_blit_fn longstrip_cfg_t::blit

Band composite sink.

Definition at line 168 of file longstrip.h.

Referenced by internal_bind(), and internal_check_ptrs().

blit_ctx

void* longstrip_cfg_t::blit_ctx

Context for blit.

Definition at line 169 of file longstrip.h.

Referenced by internal_bind().

cache

ra8_tile_cache_t* longstrip_cfg_t::cache

Band cache (decode-on-miss = JOF).

Definition at line 164 of file longstrip.h.

Referenced by internal_bind(), and internal_check_ptrs().

image_id

uint32_t longstrip_cfg_t::image_id

Tile-cache key namespace for strip.

Definition at line 165 of file longstrip.h.

Referenced by internal_bind().

pread

jof_pread_fn longstrip_cfg_t::pread

Atlas backing read seam.

Definition at line 161 of file longstrip.h.

Referenced by internal_check_ptrs(), and longstrip_open().

pread_ctx

void* longstrip_cfg_t::pread_ctx

Context for pread.

Definition at line 162 of file longstrip.h.

Referenced by longstrip_open().

viewport_h

uint16_t longstrip_cfg_t::viewport_h

On-screen viewport height, pixels.

Definition at line 167 of file longstrip.h.

Referenced by internal_bind(), and longstrip_open().

viewport_w

uint16_t longstrip_cfg_t::viewport_w

On-screen viewport width, pixels.

Definition at line 166 of file longstrip.h.

Referenced by internal_bind(), and longstrip_open().

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The documentation for this struct was generated from the following file:

• apps/shared_libs/longstrip/inc/longstrip.h