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@@ -29,49 +29,49 @@ void SoundDriver_Allegro::MainLoop()
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/* We haven't opened a stream yet */
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if (_stream == nullptr) return;
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void *data = get_audio_stream_buffer(_stream);
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/* We don't have to fill the stream yet */
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if (data == nullptr) return;
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/* Mix the samples */
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MxMixSamples(data, _buffer_size);
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/* Allegro sound is always unsigned, so we need to correct that */
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uint16 *snd = (uint16*)data;
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for (int i = 0; i < _buffer_size * 2; i++) snd[i] ^= 0x8000;
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/* Tell we've filled the stream */
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free_audio_stream_buffer(_stream);
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}
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/**
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* There are multiple modules that might be using Allegro and
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* Allegro can only be initiated once.
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*/
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extern int _allegro_instance_count;
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const char *SoundDriver_Allegro::Start(const char * const *parm)
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const char *SoundDriver_Allegro::Start(const StringList &parm)
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{
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if (_allegro_instance_count == 0 && install_allegro(SYSTEM_AUTODETECT, &errno, nullptr)) {
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DEBUG(driver, 0, "allegro: install_allegro failed '%s'", allegro_error);
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return "Failed to set up Allegro";
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}
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_allegro_instance_count++;
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/* Initialise the sound */
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if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, nullptr) != 0) {
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DEBUG(driver, 0, "allegro: install_sound failed '%s'", allegro_error);
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return "Failed to set up Allegro sound";
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}
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/* Okay, there's no soundcard */
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if (digi_card == DIGI_NONE) {
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DEBUG(driver, 0, "allegro: no sound card found");
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return "No sound card found";
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}
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int hz = GetDriverParamInt(parm, "hz", 44100);
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_buffer_size = GetDriverParamInt(parm, "samples", 1024) * hz / 11025;
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_stream = play_audio_stream(_buffer_size, 16, true, hz, 255, 128);
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MxInitialize(hz);
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return nullptr;
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