diff options
| -rw-r--r-- | engines/agi/sound.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/engines/agi/sound.cpp b/engines/agi/sound.cpp index 0182a27db7..b083b77440 100644 --- a/engines/agi/sound.cpp +++ b/engines/agi/sound.cpp @@ -50,6 +50,9 @@ struct IIgsEnvelope { IIgsEnvelopeSegment seg[ENVELOPE_SEGMENT_COUNT]; }; +// 2**(1/12) i.e. the 12th root of 2 +#define SEMITONE 1.059463094359295 + struct IIgsWaveInfo { uint8 top; uint8 addr; @@ -199,7 +202,7 @@ Audio::AudioStream *makeIIgsSampleStream(Common::SeekableReadStream &stream, int if (readBytes == header.sampleSize) { // Check that we got all the data we requested // Make an audio stream from the mono, 8 bit, unsigned input data byte flags = Audio::Mixer::FLAG_AUTOFREE | Audio::Mixer::FLAG_UNSIGNED; - int rate = (int) (1076 * pow(pow(2, 1/12.0), header.pitch)); + int rate = (int) (1076 * pow(SEMITONE, header.pitch)); result = Audio::makeLinearInputStream(sampleData, header.sampleSize, rate, flags, 0, 0); } } |