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bug-fix: buffer-overflow in SDL2 audio code

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This commit is contained in:
David Ludwig 2017-07-23 15:13:50 -04:00
parent 6e36c8dd30
commit 84282f4525
1 changed files with 7 additions and 0 deletions
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7
BasiliskII/src/SDL/audio_sdl.cpp
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@ -87,6 +87,7 @@ static bool open_sdl_audio(void)
}
SDL_AudioSpec audio_spec;
SDL_zero(audio_spec);
audio_spec.freq = audio_sample_rates[audio_sample_rate_index] >> 16;
audio_spec.format = (audio_sample_sizes[audio_sample_size_index] == 8) ? AUDIO_U8 : AUDIO_S16MSB;
audio_spec.channels = audio_channel_counts[audio_channel_count_index];
@ -99,6 +100,12 @@ static bool open_sdl_audio(void)
fprintf(stderr, "WARNING: Cannot open audio: %s\n", SDL_GetError());
return false;
}
// HACK: workaround a possible bug in SDL 2.0.5 (reported via https://bugzilla.libsdl.org/show_bug.cgi?id=3710 )
// whereby SDL does not update audio_spec.size
if (audio_spec.size == 0) {
audio_spec.size = (SDL_AUDIO_BITSIZE(audio_spec.format) / 8) * audio_spec.channels * audio_spec.samples;
}
#if defined(BINCUE)
OpenAudio_bincue(audio_spec.freq, audio_spec.format, audio_spec.channels,