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Bug 785967 - Reject Wave files with invalid data block size in the format chunk. r=doublec

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This commit is contained in:
Matthew Gregan 2012-08-28 18:21:58 +12:00
parent 6a48d9fd2b
commit 7f1be93029
1 changed files with 3 additions and 1 deletions
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4
content/media/wave/nsWaveReader.cpp
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@ -436,10 +436,12 @@ nsWaveReader::LoadFormatChunk()
// Make sure metadata is fairly sane. The rate check is fairly arbitrary,
// but the channels check is intentionally limited to mono or stereo
// because that's what the audio backend currently supports.
unsigned int actualFrameSize = sampleFormat == 8 ? 1 : 2 * channels;
if (rate < 100 || rate > 96000 ||
channels < 1 || channels > MAX_CHANNELS ||
(frameSize != 1 && frameSize != 2 && frameSize != 4) ||
(sampleFormat != 8 && sampleFormat != 16)) {
(sampleFormat != 8 && sampleFormat != 16) ||
frameSize != actualFrameSize) {
NS_WARNING("Invalid WAVE metadata");
return false;
}