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| author | Max Horn | 2003-09-18 16:01:33 +0000 |
|---|---|---|
| committer | Max Horn | 2003-09-18 16:01:33 +0000 |
| commit | 9470c9f66131d16ca19d111d21948ba57a1a8eb3 (patch) | |
| tree | 79aa7b664c9dcab922649ad552ef03fe6ba58e21 /backends/midi | |
| parent | dcf77f7a1008e4a6b98c9face6cc7461c6347e1d (diff) | |
| download | scummvm-rg350-9470c9f66131d16ca19d111d21948ba57a1a8eb3.tar.gz scummvm-rg350-9470c9f66131d16ca19d111d21948ba57a1a8eb3.tar.bz2 scummvm-rg350-9470c9f66131d16ca19d111d21948ba57a1a8eb3.zip | |
changed & documented the premixer semantics
svn-id: r10294
Diffstat (limited to 'backends/midi')
| -rw-r--r-- | backends/midi/adlib.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/backends/midi/adlib.cpp b/backends/midi/adlib.cpp index 2205c56589..efd412235e 100644 --- a/backends/midi/adlib.cpp +++ b/backends/midi/adlib.cpp @@ -866,7 +866,7 @@ int MidiDriver_ADLIB::open() { _samples_per_tick = (_mixer->getOutputRate() << FIXP_SHIFT) / BASE_FREQ; - _mixer->setupPremix(this, premix_proc); + _mixer->setupPremix(premix_proc, this); return 0; } @@ -1014,6 +1014,9 @@ void MidiDriver_ADLIB::adlib_write(byte port, byte value) { void MidiDriver_ADLIB::generate_samples(int16 *data, int len) { int step; + int16 *origData = data; + uint origLen = len; + do { step = len; if (step > (_next_tick >> FIXP_SHIFT)) @@ -1030,6 +1033,11 @@ void MidiDriver_ADLIB::generate_samples(int16 *data, int len) { data += step; len -= step; } while (len); + + // Convert mono data to stereo + for (int i = (origLen - 1); i >= 0; i--) { + origData[2 * i] = origData[2 * i + 1] = origData[i]; + } } void MidiDriver_ADLIB::reset_tick() { |