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trap alpha-decoding error

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Improves robustness to bad bitstream.

Change-Id: I87ca03ccd12d4d690904b35f8dfc2a20a28fb47b
This commit is contained in:
Pascal Massimino
2011-12-08 06:34:00 -08:00
parent b361eca1c5
commit 08e865822a
1 changed files with 2 additions and 2 deletions
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4
src/utils/alpha.c
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@@ -350,7 +350,7 @@ static int DecompressZlibTCoder(const uint8_t* data, size_t data_size,
size_t pos = 0;
VP8BitReader br;
VP8InitBitReader(&br, data, data + data_size);
while (pos < output_size) {
while (pos < output_size && !br.eof_) {
const int dist = TCoderDecode(coderd, &br);
if (dist == 0) {
const int literal = TCoderDecode(coder, &br);
@@ -366,8 +366,8 @@ static int DecompressZlibTCoder(const uint8_t* data, size_t data_size,
pos += len;
}
}
ok = !br.eof_;
}
ok = 1;
End:
if (coder) TCoderDelete(coder);