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koreader/frontend/document/tilecacheitem.lua
2020-09-28 01:04:59 +02:00

31 lines
962 B
Lua

local Blitbuffer = require("ffi/blitbuffer")
local CacheItem = require("cacheitem")
local serial = require("serialize")
local logger = require("logger")
local TileCacheItem = CacheItem:new{}
function TileCacheItem:onFree()
if self.bb.free then
logger.dbg("free blitbuffer", self.bb)
self.bb:free()
end
end
function TileCacheItem:dump(filename)
logger.dbg("dumping tile cache to", filename, self.excerpt)
return serial.dump(self.size, self.excerpt, self.pageno,
self.bb.w, self.bb.h, self.bb.stride, self.bb:getType(),
Blitbuffer.tostring(self.bb), filename)
end
function TileCacheItem:load(filename)
local w, h, stride, bb_type, bb_data
self.size, self.excerpt, self.pageno,
w, h, stride, bb_type, bb_data = serial.load(filename)
self.bb = Blitbuffer.fromstring(w, h, bb_type, bb_data, stride)
logger.dbg("loading tile cache from", filename, self)
end
return TileCacheItem