Justin Mitchell
a86a644adc
Split heap gate into separate free-memory (50KB) and largest-block (20KB) thresholds based on field measurements. Enable wolfSSL single-precision ECC to use fixed 256-bit arrays instead of heap-allocated fast-math bignums, reducing TLS handshake memory footprint. Reclaim ~7KB by right-sizing ESP timer task stacks and move WiFi code out of IRAM to free ~25-30KB for heap. Add memory audit landmarks for font and EPUB allocations.
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
#pragma once
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#include <cstdint>
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#include <string>
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#include <vector>
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class GfxRenderer;
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class SdCardFont;
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struct SdCardFontFamilyInfo;
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class SdCardFontManager {
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public:
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SdCardFontManager() = default;
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~SdCardFontManager();
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SdCardFontManager(const SdCardFontManager&) = delete;
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SdCardFontManager& operator=(const SdCardFontManager&) = delete;
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// Load the font file whose physical point size is closest to the reader
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// fontSizeEnum (SMALL=12, MEDIUM=14, LARGE=16, EXTRA_LARGE=18). Only one
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// .cpfont file is loaded; other sizes remain on disk. This keeps resident
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// interval + kern/ligature tables to one size's worth of memory.
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// Returns true on success.
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bool loadFamily(const SdCardFontFamilyInfo& family, GfxRenderer& renderer, uint8_t fontSizeEnum);
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// Unload everything, unregister from renderer.
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void unloadAll(GfxRenderer& renderer);
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// Look up the font ID for the loaded family. Returns 0 if nothing loaded
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// or familyName doesn't match.
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int getFontId(const std::string& familyName) const;
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// Get name of currently loaded family (empty if none).
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const std::string& currentFamilyName() const { return loadedFamilyName_; };
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// MEMFIX-PORT: font manager audit passthrough; portable
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// Sum of loaded fonts' resident heap (see SdCardFont::reportMemory).
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size_t reportMemory() const;
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// Point size that was actually loaded.
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// 0 if nothing loaded.
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uint8_t currentPointSize() const { return loadedPointSize_; };
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private:
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struct LoadedFont {
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SdCardFont* font; // heap-allocated, owned
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int fontId;
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uint8_t size;
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};
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static int computeFontId(uint32_t contentHash, const char* familyName, uint8_t pointSize);
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std::string loadedFamilyName_;
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uint8_t loadedPointSize_ = 0;
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std::vector<LoadedFont> loaded_;
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};
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