int main()
{
// Setup left buffer and wave
int left_time = 0;
int left_amp = 0;
setup_demo( left, left_synth );
left.clock_rate( left.sample_rate() * 100 );
// Setup right buffer and wave
int right_time = 0;
int right_amp = 0;
setup_demo( right, right_synth );
right.clock_rate( right.sample_rate() * 100 );
while ( !button_pressed() )
{
blip_time_t length = 100000;
// mouse sets frequency of left wave
int period = 1000 + 6 * mouse_x();
// Add saw wave to left buffer
do {
left_synth.update( left_time, left_amp = (left_amp + 1) % 10 );
} while ( (left_time += period) < length );
left.end_frame( length );
left_time -= length;
// Add saw wave of slightly lower pitch to right buffer
do {
right_synth.update( right_time, right_amp = (right_amp + 1) % 10 );
} while ( (right_time += 1000) < length );
right.end_frame( length );
right_time -= length;
// buffer to read samples into
int const buf_size = 2048;
static blip_sample_t samples [buf_size];
// Read left channel into even samples, right channel into odd samples:
// LRLRLRLRLR...
long count = left.read_samples( samples, buf_size / 2, 1 );
right.read_samples( samples + 1, count, 1 );
play_stereo_samples( samples, count * 2 );
}
return 0;
}
// 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;
}