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KOPTInterface: Minor optimization when hashing the configurable status

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Use a table & table.concat instead of individual concats.
And then use that same table for every hash-related operation.

(Nothing else uses the configurable hash function, otherwise I'd have
limited the table shenanigans to the function itself).
This commit is contained in:
NiLuJe
2021-05-09 19:08:03 +02:00
parent 48c474e245
commit 1ffbd8760d
3 changed files with 67 additions and 47 deletions
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99
frontend/document/koptinterface.lua
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@@ -150,12 +150,18 @@ function KoptInterface:createContext(doc, pageno, bbox)
return kc
end
function KoptInterface:getContextHash(doc, pageno, bbox)
function KoptInterface:getContextHash(doc, pageno, bbox, hash_list)
local canvas_size = CanvasContext:getSize()
local canvas_size_hash = canvas_size.w.."|"..canvas_size.h
local bbox_hash = bbox.x0.."|"..bbox.y0.."|"..bbox.x1.."|"..bbox.y1
return doc.file.."|"..doc.mod_time.."|"..pageno.."|"
..doc.configurable:hash("|").."|"..bbox_hash.."|"..canvas_size_hash
table.insert(hash_list, doc.file)
table.insert(hash_list, doc.mod_time)
table.insert(hash_list, pageno)
doc.configurable:hash(hash_list)
table.insert(hash_list, bbox.x0)
table.insert(hash_list, bbox.y0)
table.insert(hash_list, bbox.x1)
table.insert(hash_list, bbox.y1)
table.insert(hash_list, canvas_size.w)
table.insert(hash_list, canvas_size.h)
end
function KoptInterface:getPageBBox(doc, pageno)
@@ -182,8 +188,9 @@ function KoptInterface:getAutoBBox(doc, pageno)
x1 = native_size.w,
y1 = native_size.h,
}
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "autobbox|"..context_hash
local hash_list = { "autobbox" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local page = doc._document:openPage(pageno)
@@ -211,8 +218,9 @@ Detect bbox within user restricted bbox.
function KoptInterface:getSemiAutoBBox(doc, pageno)
-- use manual bbox
local bbox = Document.getPageBBox(doc, pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "semiautobbox|"..context_hash
local hash_list = { "semiautobbox" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local page = doc._document:openPage(pageno)
@@ -247,9 +255,10 @@ immediately, or wait for the background thread with reflowed context.
--]]
function KoptInterface:getCachedContext(doc, pageno)
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local kctx_hash = "kctx|"..context_hash
local cached = DocCache:check(kctx_hash, ContextCacheItem)
local hash_list = { "kctx" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash, ContextCacheItem)
if not cached then
-- If kctx is not cached, create one and get reflowed bmp in foreground.
local kc = self:createContext(doc, pageno, bbox)
@@ -265,7 +274,7 @@ function KoptInterface:getCachedContext(doc, pageno)
local fullwidth, fullheight = kc:getPageDim()
logger.dbg("reflowed page", pageno, "fullwidth:", fullwidth, "fullheight:", fullheight)
self.last_context_size = fullwidth * fullheight + 3072 -- estimation
DocCache:insert(kctx_hash, ContextCacheItem:new{
DocCache:insert(hash, ContextCacheItem:new{
persistent = true,
size = self.last_context_size,
kctx = kc
@@ -331,10 +340,11 @@ Inherited from common document interface.
function KoptInterface:renderReflowedPage(doc, pageno, rect, zoom, rotation, render_mode)
doc.render_mode = render_mode
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local renderpg_hash = "renderpg|"..context_hash
local hash_list = { "renderpg" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(renderpg_hash)
local cached = DocCache:check(hash)
if not cached then
-- do the real reflowing if kctx has not been cached yet
local kc = self:getCachedContext(doc, pageno)
@@ -350,7 +360,7 @@ function KoptInterface:renderReflowedPage(doc, pageno, rect, zoom, rotation, ren
}
tile.bb = kc:dstToBlitBuffer()
tile.size = tonumber(tile.bb.stride) * tile.bb.h + 512 -- estimation
DocCache:insert(renderpg_hash, tile)
DocCache:insert(hash, tile)
return tile
else
return cached
@@ -365,10 +375,11 @@ Inherited from common document interface.
function KoptInterface:renderOptimizedPage(doc, pageno, rect, zoom, rotation, render_mode)
doc.render_mode = render_mode
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local renderpg_hash = "renderoptpg|"..context_hash..zoom
local hash_list = { "renderoptpg" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(renderpg_hash, TileCacheItem)
local cached = DocCache:check(hash, TileCacheItem)
if not cached then
local page_size = Document.getNativePageDimensions(doc, pageno)
local full_page_bbox = {
@@ -397,7 +408,7 @@ function KoptInterface:renderOptimizedPage(doc, pageno, rect, zoom, rotation, re
tile.bb = kc:dstToBlitBuffer()
tile.size = tonumber(tile.bb.stride) * tile.bb.h + 512 -- estimation
kc:free()
DocCache:insert(renderpg_hash, tile)
DocCache:insert(hash, tile)
return tile
else
return cached
@@ -425,9 +436,10 @@ Inherited from common document interface.
--]]
function KoptInterface:hintReflowedPage(doc, pageno, zoom, rotation, gamma, render_mode)
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local kctx_hash = "kctx|"..context_hash
local cached = DocCache:check(kctx_hash)
local hash_list = { "kctx" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local kc = self:createContext(doc, pageno, bbox)
local page = doc._document:openPage(pageno)
@@ -436,7 +448,7 @@ function KoptInterface:hintReflowedPage(doc, pageno, zoom, rotation, gamma, rend
kc:setPreCache()
page:reflow(kc, 0)
page:close()
DocCache:insert(kctx_hash, ContextCacheItem:new{
DocCache:insert(hash, ContextCacheItem:new{
size = self.last_context_size or self.default_context_size,
kctx = kc,
})
@@ -492,11 +504,12 @@ Get text boxes in reflowed page via rectmaps in koptcontext.
--]]
function KoptInterface:getReflowedTextBoxes(doc, pageno)
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "rfpgboxes|"..context_hash
local hash_list = { "rfpgboxes" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local kctx_hash = "kctx|"..context_hash
local kctx_hash = hash:gsub("^rfpgboxes|", "kctx|")
cached = DocCache:check(kctx_hash)
if cached then
local kc = self:waitForContext(cached.kctx)
@@ -516,11 +529,12 @@ Get text boxes in native page via rectmaps in koptcontext.
--]]
function KoptInterface:getNativeTextBoxes(doc, pageno)
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "nativepgboxes|"..context_hash
local hash_list = { "nativepgboxes" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local kctx_hash = "kctx|"..context_hash
local kctx_hash = hash:gsub("^nativepgboxes|", "kctx|")
cached = DocCache:check(kctx_hash)
if cached then
local kc = self:waitForContext(cached.kctx)
@@ -542,11 +556,12 @@ Done by OCR pre-processing in Tesseract and Leptonica.
--]]
function KoptInterface:getReflowedTextBoxesFromScratch(doc, pageno)
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "scratchrfpgboxes|"..context_hash
local hash_list = { "scratchrfpgboxes" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local kctx_hash = "kctx|"..context_hash
local kctx_hash = hash:gsub("^scratchrfpgboxes|", "kctx|")
cached = DocCache:check(kctx_hash)
if cached then
local reflowed_kc = self:waitForContext(cached.kctx)
@@ -615,8 +630,9 @@ Get page regions in native page via optical method.
function KoptInterface:getPageBlock(doc, pageno, x, y)
local kctx
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "pageblocks|"..context_hash
local hash_list = { "pageblocks" }
self:getContextHash(doc, pageno, bbox, hash_list)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local page_size = Document.getNativePageDimensions(doc, pageno)
@@ -660,11 +676,16 @@ Get word from OCR in reflew page.
function KoptInterface:getReflewOCRWord(doc, pageno, rect)
self.ocr_lang = doc.configurable.doc_language
local bbox = doc:getPageBBox(pageno)
local context_hash = self:getContextHash(doc, pageno, bbox)
local hash = "rfocrword|"..context_hash..rect.x..rect.y..rect.w..rect.h
local hash_list = { "rfocrword" }
self:getContextHash(doc, pageno, bbox, hash_list)
table.insert(hash_list, rect.x)
table.insert(hash_list, rect.y)
table.insert(hash_list, rect.w)
table.insert(hash_list, rect.h)
local hash = table.concat(hash_list, "|")
local cached = DocCache:check(hash)
if not cached then
local kctx_hash = "kctx|"..context_hash
local kctx_hash = hash:gsub("^rfocrword|", "kctx|")
cached = DocCache:check(kctx_hash)
if cached then
local kc = self:waitForContext(cached.kctx)