static void RedoVolume(void) { apu.output(zebuf.center(), zebuf.left(), zebuf.right()); //apu.volume(0.15); apu.volume(0.25); FMSynth.volume(1.00); }
// Quick test of functions int main() { Blip_Buffer buf; Blip_Synth<blip_low_quality,20> synth; // Setup buffer buf.clock_rate( 44100 ); if ( buf.set_sample_rate( 44100 ) ) return 1; synth.output( &buf ); synth.volume( 0.5 ); // Add wave that goes from 0 to 50% to -50% synth.update( 4, 10 ); synth.update( 8, -10 ); buf.end_frame( 30 ); // Read samples as this type typedef float sample_t; // floating-point //typedef unsigned short sample_t; // unsigned 16-bit //typedef unsigned char sample_t; // unsigned 8-bit // Read and display samples const int max_samples = 30; sample_t samples [max_samples]; int count = read_samples( buf, samples, max_samples ); for ( int i = buf.output_latency() + 1; i < count; i++ ) printf( "%.2f,", (double) samples [i] ); printf( "\n" ); return 0; }
int main() { long sample_rate = 44100; // Sample rate sets how many samples are generated per second if ( buf.set_sample_rate( sample_rate ) ) return 1; // out of memory buf.bass_freq( 0 ); // keep waveforms perfectly flat // Setup synth synth.output( &buf ); synth.volume( 0.50 ); while ( !button_pressed() ) { // Mouse sets clock rate, higher to the right. The higher the clock // rate, the more packed the waveform becomes. long rate = sample_rate * (mouse_x() * 10 + 1); // Clock rate sets how many time units there are per second buf.clock_rate( rate ); // Generate random waveform, with each transition spaced 50 clocks apart. srand( 1 ); buf.clear(); for ( int time = 0; time < 500; time += 50 ) synth.update( time, rand() % 20 - 10 ); buf.end_frame( 600 ); show_buffer_unscaled( buf ); } return 0; }
int main () { if (!alureInitDevice(NULL, NULL)) { std::fprintf(stderr, "Failed to open OpenAL device: %s\n", alureGetErrorString()); return 1; } alGenSources(1, &src); if (alGetError() != AL_NO_ERROR) { std::fprintf(stderr, "Failed to create OpenAL source!\n"); alureShutdownDevice(); return 1; } // Seeting Blip Buffer synth.treble_eq( -18.0f ); synth.volume (0.80); synth.output (&blipbuf); // Init Blip Buffer with a buffer of 250ms (second paramter is time in ms) if ( blipbuf.set_sample_rate( SR, 1000 / 4 ) ) { std::fprintf(stderr, "Failed to create Blip Buffer! Our of Memory\n"); alureShutdownDevice(); return 1; } blipbuf.clock_rate( blipbuf.sample_rate() ); blipbuf.bass_freq(300); // Equalization like a TV speaker stream = alureCreateStreamFromCallback (StreamCB, nullptr, AL_FORMAT_MONO16, SR, SR/2, 0, nullptr); if(!stream) { std::fprintf(stderr, "Error creating stream! %s\n", alureGetErrorString()); alDeleteSources(1, &src); alureShutdownDevice(); return 1; } if (!alurePlaySourceStream(src, stream, 4, 0, eos_callback, NULL)) { std::fprintf(stderr, "Failed to play stream: %s\n", alureGetErrorString()); isdone = 1; } alureUpdateInterval(0.005f); // Should be a independint thread playing the stream while(!isdone) { freq -= 1; if (freq < 1) { freq = 600; } alureSleep(0.02f); } alureStopSource(src, AL_FALSE); alDeleteSources(1, &src); alureDestroyStream(stream, 0, NULL); alureShutdownDevice(); return 0; }