Found while working on bug 635649. The code to covert from U8 sound samples to S16 format is incorrect. Existing code is: s_data[i + offset] = short(((PRInt32(buf[i]) - 128) * volume) >> 8); For a U8 value of 255 this gives a result of 32512. It should give 32767. Matthew Gregan suggested fixing it as part of the audio backend refactoring.
FORMAT_U8 conversion was removed from nsAudioStream in bug 775319.
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