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C++ changes to parallel r1837

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git-svn-id: https://zxing.googlecode.com/svn/trunk@1840 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
smparkes@smparkes.net 2011-06-28 16:06:13 +00:00
parent 395cdb0f24
commit 776e9b6a06
1 changed files with 9 additions and 0 deletions
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9
cpp/core/src/zxing/qrcode/decoder/DecodedBitStreamParser.cpp
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@ -144,6 +144,9 @@ namespace zxing {
// Read three digits at a time
while (count >= 3) {
// Each 10 bits encodes three digits
if (bits->available() < 10) {
throw ReaderException("format exception");
}
int threeDigitsBits = bits->readBits(10);
if (threeDigitsBits >= 1000) {
ostringstream s;
@ -157,6 +160,9 @@ namespace zxing {
count -= 3;
}
if (count == 2) {
if (bits->available() < 7) {
throw ReaderException("format exception");
}
// Two digits left over to read, encoded in 7 bits
int twoDigitsBits = bits->readBits(7);
if (twoDigitsBits >= 100) {
@ -168,6 +174,9 @@ namespace zxing {
bytes[i++] = ALPHANUMERIC_CHARS[twoDigitsBits / 10];
bytes[i++] = ALPHANUMERIC_CHARS[twoDigitsBits % 10];
} else if (count == 1) {
if (bits->available() < 4) {
throw ReaderException("format exception");
}
// One digit left over to read
int digitBits = bits->readBits(4);
if (digitBits >= 10) {