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| author | Simon Howard | 2009-09-20 21:19:37 +0000 |
|---|---|---|
| committer | Simon Howard | 2009-09-20 21:19:37 +0000 |
| commit | f894f24bcd63dc8b2a0604a9b659dd95aebbb384 (patch) | |
| tree | 9e3006ac7d9baa802f86a4ed5ee2ad6739ff9259 /src/i_oplmusic.c | |
| parent | b600e190fd4593faed8c14da776c991e99e8c86c (diff) | |
| download | chocolate-doom-f894f24bcd63dc8b2a0604a9b659dd95aebbb384.tar.gz chocolate-doom-f894f24bcd63dc8b2a0604a9b659dd95aebbb384.tar.bz2 chocolate-doom-f894f24bcd63dc8b2a0604a9b659dd95aebbb384.zip | |
Avoid possible overflow due to base note offset.
Subversion-branch: /branches/opl-branch
Subversion-revision: 1683
Diffstat (limited to 'src/i_oplmusic.c')
| -rw-r--r-- | src/i_oplmusic.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/i_oplmusic.c b/src/i_oplmusic.c index de126c63..aa079614 100644 --- a/src/i_oplmusic.c +++ b/src/i_oplmusic.c @@ -934,6 +934,13 @@ static unsigned int FrequencyForVoice(opl_voice_t *voice) gm_voice = &voice->current_instr->voices[voice->current_instr_voice]; note += (signed short) SHORT(gm_voice->base_note_offset); + // Avoid possible overflow due to base note offset: + + if (note > 0x7f) + { + note = voice->note; + } + freq_index = 64 + 32 * note + voice->channel->bend; // If this is the second voice of a double voice instrument, the |