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Fixed possible FPE at high speaker frequencies (beep_samples == 0).

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This commit is contained in:
Volker Ruppert 2018-01-18 19:00:57 +00:00
parent 5c5fd2c97c
commit de30601ca6
1 changed files with 6 additions and 1 deletions
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7
bochs/iodev/speaker.cc
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@ -241,10 +241,14 @@ Bit32u bx_speaker_c::beep_generator(Bit16u rate, Bit8u *buffer, Bit32u len)
BX_LOCK(beep_mutex);
if (!beep_active) {
beep_samples = 0;
} else {
beep_samples = (Bit32u)((float)rate / beep_frequency / 2);
}
if (beep_samples == 0) {
BX_UNLOCK(beep_mutex);
return 0;
}
beep_samples = (Bit32u)((float)rate / beep_frequency / 2);
do {
buffer[j++] = 0;
buffer[j++] = beep_level;
@ -254,6 +258,7 @@ Bit32u bx_speaker_c::beep_generator(Bit16u rate, Bit8u *buffer, Bit32u len)
beep_level ^= 0x80;
beep_pos = 0;
beep_samples = (Bit32u)((float)rate / beep_frequency / 2);
if (beep_samples == 0) break;
}
} while (j < len);
BX_UNLOCK(beep_mutex);