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multiformat reader for one-d

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This commit is contained in:
Henry Schimke
2022-12-10 16:41:02 -06:00
parent cacdd80efd
commit f13d8bd479
22 changed files with 334 additions and 247 deletions
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22
src/oned/itf_reader.rs
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@@ -113,7 +113,7 @@ impl OneDReader for ITFReader {
let endRange = self.decodeEnd(&mut row)?;
let mut result = String::with_capacity(20); //new StringBuilder(20);
Self::decodeMiddle(&row, startRange[1], endRange[0], &mut result)?;
self.decodeMiddle(&row, startRange[1], endRange[0], &mut result)?;
let resultString = result; //.toString();
let allowedLengths = if let Some(DecodeHintValue::AllowedLengths(al)) =
@@ -180,6 +180,7 @@ impl ITFReader {
* @throws NotFoundException if decoding could not complete successfully
*/
fn decodeMiddle(
&self,
row: &BitArray,
payloadStart: usize,
payloadEnd: usize,
@@ -197,7 +198,7 @@ impl ITFReader {
while payloadStart < payloadEnd {
// Get 10 runs of black/white.
Self::recordPattern(row, payloadStart, &mut counterDigitPair)?;
self.recordPattern(row, payloadStart, &mut counterDigitPair)?;
// Split them into each array
for k in 0..5 {
// for (int k = 0; k < 5; k++) {
@@ -206,9 +207,9 @@ impl ITFReader {
counterWhite[k] = counterDigitPair[twoK + 1];
}
let mut bestMatch = Self::decodeDigit(&counterBlack)?;
let mut bestMatch = self.decodeDigit(&counterBlack)?;
resultString.push(char::from_u32('0' as u32 + bestMatch).unwrap());
bestMatch = Self::decodeDigit(&counterWhite)?;
bestMatch = self.decodeDigit(&counterWhite)?;
resultString.push(char::from_u32('0' as u32 + bestMatch).unwrap());
payloadStart += counterDigitPair.iter().sum::<u32>() as usize;
@@ -231,7 +232,7 @@ impl ITFReader {
*/
fn decodeStart(&mut self, row: &BitArray) -> Result<[usize; 2], Exceptions> {
let endStart = Self::skipWhiteSpace(row)?;
let startPattern = Self::findGuardPattern(row, endStart, &START_PATTERN)?;
let startPattern = self.findGuardPattern(row, endStart, &START_PATTERN)?;
// Determine the width of a narrow line in pixels. We can do this by
// getting the width of the start pattern and dividing by 4 because its
@@ -314,10 +315,10 @@ impl ITFReader {
let endStart = Self::skipWhiteSpace(row)?;
let mut endPattern;
endPattern =
if let Ok(ptrn) = Self::findGuardPattern(row, endStart, &END_PATTERN_REVERSED[0]) {
if let Ok(ptrn) = self.findGuardPattern(row, endStart, &END_PATTERN_REVERSED[0]) {
ptrn
} else {
Self::findGuardPattern(row, endStart, &END_PATTERN_REVERSED[1])?
self.findGuardPattern(row, endStart, &END_PATTERN_REVERSED[1])?
};
// try {
// endPattern = findGuardPattern(row, endStart, END_PATTERN_REVERSED[0]);
@@ -356,6 +357,7 @@ impl ITFReader {
* @throws NotFoundException if pattern is not found
*/
fn findGuardPattern(
&self,
row: &BitArray,
rowOffset: usize,
pattern: &[u32],
@@ -373,7 +375,7 @@ impl ITFReader {
counters[counterPosition] += 1;
} else {
if counterPosition == patternLength - 1 {
if Self::patternMatchVariance(&counters, pattern, MAX_INDIVIDUAL_VARIANCE)
if self.patternMatchVariance(&counters, pattern, MAX_INDIVIDUAL_VARIANCE)
< MAX_AVG_VARIANCE
{
return Ok([patternStart, x]);
@@ -403,14 +405,14 @@ impl ITFReader {
* @return The decoded digit
* @throws NotFoundException if digit cannot be decoded
*/
fn decodeDigit(counters: &[u32]) -> Result<u32, Exceptions> {
fn decodeDigit(&self,counters: &[u32]) -> Result<u32, Exceptions> {
let mut bestVariance = MAX_AVG_VARIANCE; // worst variance we'll accept
let mut bestMatch = -1_isize;
let max = PATTERNS.len();
for i in 0..max {
// for (int i = 0; i < max; i++) {
let pattern = &PATTERNS[i];
let variance = Self::patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE);
let variance = self.patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE);
if variance < bestVariance {
bestVariance = variance;
bestMatch = i as isize;