fecd1849b9
## Summary * **What is the goal of this PR?** (e.g., Fixes a bug in the user authentication module, Display the book cover image in the **"Continue Reading"** card on the home screen, with fast navigation using framebuffer caching. * **What changes are included?** - Display book cover image in the "Continue Reading" card on home screen - Load cover from cached BMP (same as sleep screen cover) - Add framebuffer store/restore functions (`copyStoredBwBuffer`, `freeStoredBwBuffer`) for fast navigation after initial render - Fix `drawBitmap` scaling bug: apply scale to offset only, not to base coordinates - Add white text boxes behind title/author/continue reading label for readability on cover - Support both EPUB and XTC file cover images - Increase HomeActivity task stack size from 2048 to 4096 for cover image rendering ## Additional Context * Add any other information that might be helpful for the reviewer (e.g., performance implications, potential risks, specific areas to focus on). - Performance: First render loads cover from SD card (~800ms), subsequent navigation uses cached framebuffer (~instant) - Memory: Framebuffer cache uses ~48KB (6 chunks × 8KB) while on home screen, freed on exit - Fallback: If cover image is not available, falls back to standard text-only display - The `drawBitmap` fix corrects a bug where screenY = (y + offset) scale was incorrectly scaling the base coordinates. Now correctly uses screenY = y + (offset scale)
104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/**
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* Xtc.h
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*
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* Main XTC ebook class for CrossPoint Reader
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* Provides EPUB-like interface for XTC file handling
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*/
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#pragma once
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#include <memory>
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#include <string>
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#include <vector>
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#include "Xtc/XtcParser.h"
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#include "Xtc/XtcTypes.h"
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/**
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* XTC Ebook Handler
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*
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* Handles XTC file loading, page access, and cover image generation.
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* Interface is designed to be similar to Epub class for easy integration.
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*/
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class Xtc {
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std::string filepath;
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std::string cachePath;
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std::unique_ptr<xtc::XtcParser> parser;
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bool loaded;
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public:
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explicit Xtc(std::string filepath, const std::string& cacheDir) : filepath(std::move(filepath)), loaded(false) {
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// Create cache key based on filepath (same as Epub)
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cachePath = cacheDir + "/xtc_" + std::to_string(std::hash<std::string>{}(this->filepath));
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}
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~Xtc() = default;
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/**
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* Load XTC file
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* @return true on success
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*/
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bool load();
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/**
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* Clear cached data
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* @return true on success
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*/
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bool clearCache() const;
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/**
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* Setup cache directory
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*/
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void setupCacheDir() const;
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// Path accessors
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const std::string& getCachePath() const { return cachePath; }
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const std::string& getPath() const { return filepath; }
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// Metadata
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std::string getTitle() const;
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bool hasChapters() const;
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const std::vector<xtc::ChapterInfo>& getChapters() const;
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// Cover image support (for sleep screen)
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std::string getCoverBmpPath() const;
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bool generateCoverBmp() const;
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// Thumbnail support (for Continue Reading card)
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std::string getThumbBmpPath() const;
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bool generateThumbBmp() const;
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// Page access
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uint32_t getPageCount() const;
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uint16_t getPageWidth() const;
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uint16_t getPageHeight() const;
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uint8_t getBitDepth() const; // 1 = XTC (1-bit), 2 = XTCH (2-bit)
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/**
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* Load page bitmap data
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* @param pageIndex Page index (0-based)
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* @param buffer Output buffer
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* @param bufferSize Buffer size
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* @return Number of bytes read
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*/
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size_t loadPage(uint32_t pageIndex, uint8_t* buffer, size_t bufferSize) const;
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/**
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* Load page with streaming callback
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* @param pageIndex Page index
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* @param callback Callback for each chunk
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* @param chunkSize Chunk size
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* @return Error code
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*/
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xtc::XtcError loadPageStreaming(uint32_t pageIndex,
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std::function<void(const uint8_t* data, size_t size, size_t offset)> callback,
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size_t chunkSize = 1024) const;
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// Progress calculation
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uint8_t calculateProgress(uint32_t currentPage) const;
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// Check if file is loaded
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bool isLoaded() const { return loaded; }
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// Error information
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xtc::XtcError getLastError() const;
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};
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