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Caclulate how much of the stream actually is needed

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This commit is contained in:
Maschell 2019-04-30 12:04:49 +02:00
parent e461e78313
commit 79365a9fe6
1 changed files with 14 additions and 5 deletions
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19
src/de/mas/wiiu/jnus/implementations/FSTDataProviderNUSTitle.java
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@ -110,12 +110,21 @@ public class FSTDataProviderNUSTitle implements FSTDataProvider, HasNUSTitle {
streamFilesize = curVal;
}
} else {
streamOffset = (payloadOffset / 0x8000) * 0x8000;
// We need the previous IV if we don't start at the first block.
if (payloadOffset >= 0x8000 && payloadOffset % 0x8000 == 0) {
streamOffset -= 16;
if (size != entry.getFileSize()) {
streamOffset = (payloadOffset / 0x8000) * 0x8000;
// We need the missing bytes of the previous blocks + the size we want to read.
streamFilesize = size;
long offsetInBlock = offset - streamOffset;
streamFilesize += offsetInBlock;
// We need the previous IV if we don't start at the first block.
if (payloadOffset >= 0x8000 && payloadOffset % 0x8000 == 0) {
streamOffset -= 16;
streamFilesize += 16;
}
}
streamFilesize = c.getEncryptedFileSize();
}
NUSDataProvider dataProvider = title.getDataProvider();