cottongin/crosspoint-reader-mod
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refactor: Revert letterbox fill to Dithered/Solid/None with edge caching

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Simplify letterbox fill modes back to Dithered (default), Solid, and
None. Remove the Extend Edges mode and all per-pixel edge replication
code. Restore Bayer ordered dithering for the Dithered fill mode.

Re-introduce edge average caching so cover edge computations persist
across sleep cycles, stored as a small binary file alongside the cover
BMP.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
cottongin
2026-02-13 11:12:27 -05:00
parent 31878a77bc
commit ea11d2f7d3
5 changed files with 149 additions and 244 deletions
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5
src/CrossPointSettings.cpp
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@@ -22,7 +22,7 @@ void readAndValidate(FsFile& file, uint8_t& member, const uint8_t maxValue) {
namespace {
constexpr uint8_t SETTINGS_FILE_VERSION = 1;
// Increment this when adding new persisted settings fields
constexpr uint8_t SETTINGS_COUNT = 32;
constexpr uint8_t SETTINGS_COUNT = 31;
constexpr char SETTINGS_FILE[] = "/.crosspoint/settings.bin";
// Validate front button mapping to ensure each hardware button is unique.
@@ -119,7 +119,6 @@ bool CrossPointSettings::saveToFile() const {
serialization::writePod(outputFile, fadingFix);
serialization::writePod(outputFile, embeddedStyle);
serialization::writePod(outputFile, sleepScreenLetterboxFill);
serialization::writePod(outputFile, sleepScreenGradientDir);
// New fields added at end for backward compatibility
outputFile.close();
@@ -227,7 +226,7 @@ bool CrossPointSettings::loadFromFile() {
if (++settingsRead >= fileSettingsCount) break;
readAndValidate(inputFile, sleepScreenLetterboxFill, SLEEP_SCREEN_LETTERBOX_FILL_COUNT);
if (++settingsRead >= fileSettingsCount) break;
readAndValidate(inputFile, sleepScreenGradientDir, SLEEP_SCREEN_GRADIENT_DIR_COUNT);
{ uint8_t _ignore; serialization::readPod(inputFile, _ignore); } // legacy: sleepScreenGradientDir
if (++settingsRead >= fileSettingsCount) break;
// New fields added at end for backward compatibility
} while (false);