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feat: Extract author from XTC/XTCH files (#563)

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## Summary

* Extract author from XTC/XTCH files

## Additional Context

* Based on updated details in
https://gist.github.com/CrazyCoder/b125f26d6987c0620058249f59f1327d

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? No
This commit is contained in:
Dave Allie
2026-01-27 22:56:51 +11:00
committed by GitHub
parent 14c819e3b5
commit 24db8937fd
6 changed files with 58 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/Xtc/Xtc/XtcParser.cpp
+33 -10
View File
@@ -47,8 +47,21 @@ XtcError XtcParser::open(const char* filepath) {
return m_lastError;
}
// Read title if available
readTitle();
// Read title & author if available
if (m_header.hasMetadata) {
m_lastError = readTitle();
if (m_lastError != XtcError::OK) {
Serial.printf("[%lu] [XTC] Failed to read title: %s\n", millis(), errorToString(m_lastError));
m_file.close();
return m_lastError;
}
m_lastError = readAuthor();
if (m_lastError != XtcError::OK) {
Serial.printf("[%lu] [XTC] Failed to read author: %s\n", millis(), errorToString(m_lastError));
m_file.close();
return m_lastError;
}
}
// Read page table
m_lastError = readPageTable();
@@ -124,24 +137,34 @@ XtcError XtcParser::readHeader() {
}
XtcError XtcParser::readTitle() {
// Title is usually at offset 0x38 (56) for 88-byte headers
// Read title as null-terminated UTF-8 string
if (m_header.titleOffset == 0) {
m_header.titleOffset = 0x38; // Default offset
}
if (!m_file.seek(m_header.titleOffset)) {
constexpr auto titleOffset = 0x38;
if (!m_file.seek(titleOffset)) {
return XtcError::READ_ERROR;
}
char titleBuf[128] = {0};
m_file.read(reinterpret_cast<uint8_t*>(titleBuf), sizeof(titleBuf) - 1);
m_file.read(titleBuf, sizeof(titleBuf) - 1);
m_title = titleBuf;
Serial.printf("[%lu] [XTC] Title: %s\n", millis(), m_title.c_str());
return XtcError::OK;
}
XtcError XtcParser::readAuthor() {
// Read author as null-terminated UTF-8 string with max length 64, directly following title
constexpr auto authorOffset = 0xB8;
if (!m_file.seek(authorOffset)) {
return XtcError::READ_ERROR;
}
char authorBuf[64] = {0};
m_file.read(authorBuf, sizeof(authorBuf) - 1);
m_author = authorBuf;
Serial.printf("[%lu] [XTC] Author: %s\n", millis(), m_author.c_str());
return XtcError::OK;
}
XtcError XtcParser::readPageTable() {
if (m_header.pageTableOffset == 0) {
Serial.printf("[%lu] [XTC] Page table offset is 0, cannot read\n", millis());