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Cache rendered fonts to speed up mobile load

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This commit is contained in:
elasota
2020-10-24 11:41:39 -04:00
parent daebba7d47
commit 26c423bb58
10 changed files with 216 additions and 12 deletions
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80
PortabilityLayer/FontManager.cpp
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@@ -7,7 +7,9 @@
#include "HostFontHandler.h"
#include "GpIOStream.h"
#include "RenderedFont.h"
#include "PLBigEndian.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
@@ -27,10 +29,17 @@ namespace PortabilityLayer
RenderedFont *GetRenderedFont(IGpFont *font, int size, bool aa, FontHacks fontHacks) override;
RenderedFont *GetRenderedFontFromFamily(FontFamily *font, int size, bool aa, int flags) override;
RenderedFont *LoadCachedRenderedFont(int cacheID, int size, bool aa, int flags) const override;
void SaveCachedRenderedFont(const RenderedFont *rfont, int cacheID, int size, bool aa, int flags) const override;
static FontManagerImpl *GetInstance();
private:
static const unsigned int kNumCachedRenderedFonts = 32;
static const int kSystemFontCacheID = 1;
static const int kApplicationFontCacheID = 2;
static const int kFontCacheVersion = 1;
static const int kFontCacheNameSize = 64;
struct CachedRenderedFont
{
@@ -46,6 +55,8 @@ namespace PortabilityLayer
void ResetUsageCounter();
static int CRFSortPredicate(const void *a, const void *b);
static void GenerateCacheFileName(char(&str)[kFontCacheNameSize], int cacheID, int size, bool aa, int flags);
FontFamily *m_systemFont;
FontFamily *m_applicationFont;
uint32_t m_usageCounter;
@@ -57,8 +68,8 @@ namespace PortabilityLayer
void FontManagerImpl::Init()
{
m_systemFont = FontFamily::Create();
m_applicationFont = FontFamily::Create();
m_systemFont = FontFamily::Create(kSystemFontCacheID);
m_applicationFont = FontFamily::Create(kApplicationFontCacheID);
if (m_systemFont)
m_systemFont->AddFont(FontFamilyFlag_None, "Fonts/OpenSans/OpenSans-ExtraBold.ttf", FontHacks_None);
@@ -162,13 +173,71 @@ namespace PortabilityLayer
RenderedFont *FontManagerImpl::GetRenderedFontFromFamily(FontFamily *fontFamily, int size, bool aa, int flags)
{
PortabilityLayer::FontManager *fm = PortabilityLayer::FontManager::GetInstance();
RenderedFont *rfont = fm->LoadCachedRenderedFont(fontFamily->GetCacheID(), size, aa, flags);
if (rfont)
return rfont;
const int variation = fontFamily->GetVariationForFlags(flags);
IGpFont *hostFont = fontFamily->GetFontForVariation(variation);
if (!hostFont)
return nullptr;
return PortabilityLayer::FontManager::GetInstance()->GetRenderedFont(hostFont, size, aa, fontFamily->GetHacksForVariation(variation));
rfont = fm->GetRenderedFont(hostFont, size, aa, fontFamily->GetHacksForVariation(variation));
if (rfont)
fm->SaveCachedRenderedFont(rfont, fontFamily->GetCacheID(), size, aa, flags);
return rfont;
}
RenderedFont *FontManagerImpl::LoadCachedRenderedFont(int cacheID, int size, bool aa, int flags) const
{
char filename[kFontCacheNameSize];
GenerateCacheFileName(filename, cacheID, size, aa, flags);
GpIOStream *stream = PortabilityLayer::HostFileSystem::GetInstance()->OpenFile(PortabilityLayer::VirtualDirectories::kFontCache, filename, false, GpFileCreationDispositions::kOpenExisting);
if (!stream)
return nullptr;
BEUInt32_t version;
if (stream->Read(&version, sizeof(version)) != sizeof(version) || version != kFontCacheVersion)
{
stream->Close();
return nullptr;
}
RenderedFont *rfont = PortabilityLayer::FontRenderer::GetInstance()->LoadCache(stream);
stream->Close();
return rfont;
}
void FontManagerImpl::SaveCachedRenderedFont(const RenderedFont *rfont, int cacheID, int size, bool aa, int flags) const
{
char filename[kFontCacheNameSize];
GenerateCacheFileName(filename, cacheID, size, aa, flags);
GpIOStream *stream = PortabilityLayer::HostFileSystem::GetInstance()->OpenFile(PortabilityLayer::VirtualDirectories::kFontCache, filename, true, GpFileCreationDispositions::kCreateOrOverwrite);
if (!stream)
return;
BEUInt32_t zero32(0);
if (stream->Write(&zero32, sizeof(zero32)) != sizeof(zero32))
{
stream->Close();
return;
}
if (PortabilityLayer::FontRenderer::GetInstance()->SaveCache(rfont, stream))
{
BEUInt32_t version(kFontCacheVersion);
stream->SeekStart(0);
stream->Write(&version, sizeof(version));
}
stream->Close();
}
FontManagerImpl *FontManagerImpl::GetInstance()
@@ -222,6 +291,11 @@ namespace PortabilityLayer
return 0;
}
void FontManagerImpl::GenerateCacheFileName(char(&str)[kFontCacheNameSize], int cacheID, int size, bool aa, int flags)
{
sprintf(str, "rf_%i_%i_%s_%i.cache", cacheID, size, aa ? "aa" : "mc", flags);
}
FontManagerImpl FontManagerImpl::ms_instance;
FontManager *FontManager::GetInstance()