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#include "../uicommon/imgui.h"
#include "audio_player.h"
#include <math.h>
const char* TOOL_NAME = "Filter Test Tool";
int TOOL_WIDTH = 640;
int TOOL_HEIGHT = 580;
static const int NOTE_MIN = 24;
static const int NOTE_MAX = 96;
float note_to_frequency(int p_note)
{
return (float)(440.0f * pow(2.0, (p_note - 69.0) / 12.0));
}
int next_window_dims(int y_pos, int height)
{
ImGui::SetNextWindowPos(ImVec2(0, static_cast<float>(y_pos)));
ImGui::SetNextWindowSize(ImVec2(640, static_cast<float>(height)));
return y_pos + height;
}
void FAudioTool_Quit()
{
/* Nothing to do... */
}
void FAudioTool_Update()
{
bool update_engine = false;
bool update_sine = false;
bool update_square = false;
bool update_saw = false;
bool update_filter = false;
bool update_output_filter = false;
// gui
int window_y = next_window_dims(0, 80);
ImGui::Begin("Output Audio Engine");
static int audio_engine = (int)AudioEngine_FAudio;
update_engine |= ImGui::RadioButton("FAudio", &audio_engine, (int)AudioEngine_FAudio);
#ifdef HAVE_XAUDIO2
ImGui::SameLine();
update_engine |= ImGui::RadioButton("XAudio2", &audio_engine, (int)AudioEngine_XAudio2);
#endif
static int num_channels = 1;
update_engine |= ImGui::RadioButton("1 Channel", &num_channels, 1); ImGui::SameLine();
update_engine |= ImGui::RadioButton("2 Channels", &num_channels, 2);
ImGui::End();
window_y = next_window_dims(window_y, 80);
ImGui::Begin("Sine Wave Generator");
static int sine_note = 60;
update_sine |= ImGui::SliderInt("Frequency", &sine_note, NOTE_MIN, NOTE_MAX); ImGui::SameLine();
ImGui::Text(" (%.2f Hz)", note_to_frequency(sine_note));
static float sine_volume = 0.0f;
update_sine |= ImGui::SliderFloat("Volume", &sine_volume, 0.0f, 1.0f);
ImGui::End();
window_y = next_window_dims(window_y, 80);
ImGui::Begin("Square Wave Generator");
static int square_note = 60;
update_square |= ImGui::SliderInt("Frequency", &square_note, NOTE_MIN, NOTE_MAX); ImGui::SameLine();
ImGui::Text(" (%.2f Hz)", note_to_frequency(square_note));
static float square_volume = 0.0f;
update_square |= ImGui::SliderFloat("Volume", &square_volume, 0.0f, 1.0f);
ImGui::End();
window_y = next_window_dims(window_y, 80);
ImGui::Begin("Saw Tooth Generator");
static int saw_note = 60;
update_saw |= ImGui::SliderInt("Frequency", &saw_note, NOTE_MIN, NOTE_MAX); ImGui::SameLine();
ImGui::Text(" (%.2f Hz)", note_to_frequency(saw_note));
static float saw_volume = 0.0f;
update_saw |= ImGui::SliderFloat("Volume", &saw_volume, 0.0f, 1.0f);
ImGui::End();
window_y = next_window_dims(window_y, 100);
ImGui::Begin("Filter");
static int filter_type = -1;
static int filter_cutoff_note = 60;
static float filter_q = 0.7f;
update_filter |= ImGui::RadioButton("None", &filter_type, -1); ImGui::SameLine();
update_filter |= ImGui::RadioButton("Low-Pass", &filter_type, 0); ImGui::SameLine();
update_filter |= ImGui::RadioButton("Band-Pass", &filter_type, 1); ImGui::SameLine();
update_filter |= ImGui::RadioButton("High-Pass", &filter_type, 2); ImGui::SameLine();
update_filter |= ImGui::RadioButton("Notch", &filter_type, 3);
update_filter |= ImGui::SliderInt("Cutoff Frequency", &filter_cutoff_note, 12, 108); ImGui::SameLine();
ImGui::Text(" (%.2f Hz)", note_to_frequency(filter_cutoff_note));
update_filter |= ImGui::SliderFloat("Q", &filter_q, 0.7f, 100.0f, "%.1f");
ImGui::End();
window_y = next_window_dims(window_y, 100);
ImGui::Begin("Output Filter");
static int output_filter_type = -1;
static int output_filter_cutoff_note = 60;
static float output_filter_q = 0.7f;
update_output_filter |= ImGui::RadioButton("None", &output_filter_type, -1); ImGui::SameLine();
update_output_filter |= ImGui::RadioButton("Low-Pass", &output_filter_type, 0); ImGui::SameLine();
update_output_filter |= ImGui::RadioButton("Band-Pass", &output_filter_type, 1); ImGui::SameLine();
update_output_filter |= ImGui::RadioButton("High-Pass", &output_filter_type, 2); ImGui::SameLine();
update_output_filter |= ImGui::RadioButton("Notch", &output_filter_type, 3);
update_output_filter |= ImGui::SliderInt("Cutoff Frequency", &output_filter_cutoff_note, 12, 108); ImGui::SameLine();
ImGui::Text(" (%.2f Hz)", note_to_frequency(output_filter_cutoff_note));
update_output_filter |= ImGui::SliderFloat("Q", &output_filter_q, 0.7f, 100.0f, "%.1f");
ImGui::End();
// audio control
static AudioPlayer player;
if (update_engine)
{
player.shutdown();
player.setup((AudioEngine)audio_engine, num_channels);
}
if (update_sine | update_engine)
{
player.oscillator_change(AudioPlayer::SineWave, note_to_frequency(sine_note), sine_volume);
}
if (update_square | update_engine)
{
player.oscillator_change(AudioPlayer::SquareWave, note_to_frequency(square_note), square_volume);
}
if (update_saw | update_engine)
{
player.oscillator_change(AudioPlayer::SawTooth, note_to_frequency(saw_note), saw_volume);
}
if (update_filter | update_engine)
{
player.filter_change(filter_type, note_to_frequency(filter_cutoff_note), filter_q);
}
if (update_output_filter | update_engine)
{
player.output_filter_change(output_filter_type, note_to_frequency(output_filter_cutoff_note), output_filter_q);
}
}
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