Momentum-Apps/flizzer_tracker.c

#include "flizzer_tracker.h"
#include "init_deinit.h"

/*
Fontname: -Raccoon-Fixed4x6-Medium-R-Normal--6-60-75-75-P-40-ISO10646-1
Copyright: 
Glyphs: 95/203
BBX Build Mode: 0
*/
const uint8_t u8g2_font_tom_thumb_4x6_tr[725] U8G2_FONT_SECTION("u8g2_font_tom_thumb_4x6_tr") =
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typedef enum
{
	EventTypeInput,
} EventType;

typedef struct
{
	EventType type;
	InputEvent input;
} FlizzerTrackerEvent;

typedef enum
{
	PARAM_FREQUENCY,
	PARAM_WAVEFORM,
	PARAM_PW,
	PARAM_ENABLE_FILTER,
	PARAM_FILTER_CUTOFF,
	PARAM_FILTER_RESONANCE,
	PARAM_FILTER_TYPE,
} SelectedParam;

const char* wave_names[] = 
{
	"NONE",
	"NOISE",
	"PULSE",
	"TRIANGLE",
	"SAWTOOTH",
	"METAL NOISE",
	"SINE",
};

const char* filter_names[] = 
{
	"NONE",
	"LOWPASS",
	"HIGHPASS",
	"BANDPASS",
};

#define NUM_PARAMS 10

static void draw_callback(Canvas* canvas, void* ctx) 
{
	FlizzerTrackerApp* tracker = (FlizzerTrackerApp*)ctx;

	canvas_clear(canvas);

	canvas_set_custom_font(canvas, u8g2_font_tom_thumb_4x6_tr);

	char buffer[30] = {0};

	snprintf(buffer, 20, "FREQUENCY: %ld Hz", tracker->frequency);
	
	canvas_draw_str(canvas, 0, 6, buffer);

	snprintf(buffer, 20, "WAVEFORM: %s", wave_names[tracker->current_waveform_index]);
	
	canvas_draw_str(canvas, 0, 12, buffer);

	snprintf(buffer, 20, "PULSE WIDTH: $%03X", tracker->pw);
	
	canvas_draw_str(canvas, 0, 18, buffer);

	snprintf(buffer, 20, "FILTER: %s", (tracker->flags & SE_ENABLE_FILTER) ? "ENABLED" : "DISABLED");

	canvas_draw_str(canvas, 0, 24, buffer);

	snprintf(buffer, 20, "CUTOFF: %d", tracker->cutoff);
	
	canvas_draw_str(canvas, 0, 30, buffer);

	snprintf(buffer, 20, "RESONANCE: %d", tracker->resonance);
	
	canvas_draw_str(canvas, 0, 36, buffer);

	snprintf(buffer, 20, "TYPE: %s", filter_names[tracker->filter_type]);
	
	canvas_draw_str(canvas, 0, 42, buffer);

	canvas_draw_str(canvas, 70, tracker->selected_param * 6 + 6, "<");

    uint32_t bytes = memmgr_get_free_heap();
	snprintf(buffer, 20, "BYTES FREE: %ld", bytes);

	canvas_draw_str(canvas, 0, 64, buffer);
}

static void input_callback(InputEvent* input_event, void* ctx) 
{
	// Проверяем, что контекст не нулевой
	furi_assert(ctx);
	FuriMessageQueue* event_queue = ctx;

	FlizzerTrackerEvent event = {.type = EventTypeInput, .input = *input_event};
	furi_message_queue_put(event_queue, &event, FuriWaitForever);
}

const uint8_t waveforms[] = 
{
	SE_WAVEFORM_NONE,
	SE_WAVEFORM_NOISE,
	SE_WAVEFORM_PULSE,
	SE_WAVEFORM_TRIANGLE,
	SE_WAVEFORM_SAW,
	SE_WAVEFORM_NOISE_METAL,
	SE_WAVEFORM_SINE,
};

int32_t flizzer_tracker_app(void* p) 
{
	UNUSED(p);

	// Текущее событие типа кастомного типа FlizzerTrackerEvent
	FlizzerTrackerEvent event;
	// Очередь событий на 8 элементов размера FlizzerTrackerEvent
	FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(FlizzerTrackerEvent));

	FlizzerTrackerApp* tracker = malloc(sizeof(FlizzerTrackerApp));

	// Создаем новый view port
	ViewPort* view_port = view_port_alloc();
	// Создаем callback отрисовки, без контекста
	view_port_draw_callback_set(view_port, draw_callback, tracker);
	// Создаем callback нажатий на клавиши, в качестве контекста передаем
	// нашу очередь сообщений, чтоб запихивать в неё эти события
	view_port_input_callback_set(view_port, input_callback, event_queue);

	// Создаем GUI приложения
	Gui* gui = furi_record_open(RECORD_GUI);
	// Подключаем view port к GUI в полноэкранном режиме
	gui_add_view_port(gui, view_port, GuiLayerFullscreen);

	tracker->notification = furi_record_open(RECORD_NOTIFICATION);
	notification_message(tracker->notification, &sequence_display_backlight_enforce_on);

	init_tracker(tracker, 44100, true, 1024);

	tracker->sound_engine.channel[0].waveform = SE_WAVEFORM_NOISE;

	tracker->frequency = 440;
	tracker->current_waveform_index = 1;

	sound_engine_set_channel_frequency(&tracker->sound_engine, &tracker->sound_engine.channel[0], 440 * 1024);

	sound_engine_start();

	// Бесконечный цикл обработки очереди событий
	while(1) 
	{
		// Выбираем событие из очереди в переменную event (ждем бесконечно долго, если очередь пуста)
		// и проверяем, что у нас получилось это сделать
		furi_check(furi_message_queue_get(event_queue, &event, FuriWaitForever) == FuriStatusOk);

		// Наше событие — это нажатие кнопки
		if(event.type == EventTypeInput) 
		{
			// Если нажата кнопка "назад", то выходим из цикла, а следовательно и из приложения
			if(event.input.key == InputKeyBack && event.input.type == InputTypeShort) 
			{
				break;
			}

			if(event.input.key == InputKeyUp && event.input.type == InputTypeShort) 
			{
				if(tracker->selected_param > 0)
				{
					tracker->selected_param--;
				}
			}

			if(event.input.key == InputKeyDown && event.input.type == InputTypeShort) 
			{
				if(tracker->selected_param < NUM_PARAMS - 1)
				{
					tracker->selected_param++;
				}
			}

			if(event.input.key == InputKeyRight && event.input.type == InputTypeShort) 
			{
				switch(tracker->selected_param)
				{
					case PARAM_FREQUENCY:
					{
						tracker->frequency += 25;

						sound_engine_set_channel_frequency(&tracker->sound_engine, &tracker->sound_engine.channel[0], tracker->frequency * 1024);

						break;
					}

					case PARAM_WAVEFORM:
					{
						if(tracker->current_waveform_index < 6)
						{
							tracker->current_waveform_index++;
						}
						
						tracker->sound_engine.channel[0].waveform = waveforms[tracker->current_waveform_index];

						break;
					}

					case PARAM_PW:
					{
						if(tracker->pw + 0x80 < 0xFFF)
						{
							tracker->pw += 0x80;
						}

						else
						{
							tracker->pw = 0x80;
						}

						tracker->sound_engine.channel[0].pw = tracker->pw;

						break;
					}

					case PARAM_ENABLE_FILTER:
					{
						tracker->flags ^= SE_ENABLE_FILTER;

						tracker->sound_engine.channel[0].filter_mode = FIL_OUTPUT_LOWPASS;
						
						tracker->sound_engine.channel[0].flags = tracker->flags;

						break;
					}

					case PARAM_FILTER_CUTOFF:
					{
						tracker->cutoff += 10;

						if(tracker->cutoff > 0xFFF)
						{
							tracker->cutoff = 0xFFF;
						}
						
						tracker->sound_engine.channel[0].filter_cutoff = tracker->cutoff;

						sound_engine_filter_set_coeff(&tracker->sound_engine.channel[0].filter, tracker->cutoff, tracker->resonance);

						break;
					}

					case PARAM_FILTER_RESONANCE:
					{
						tracker->resonance++;
						sound_engine_filter_set_coeff(&tracker->sound_engine.channel[0].filter, tracker->cutoff, tracker->resonance * 50);
						break;
					}

					case PARAM_FILTER_TYPE:
					{
						if(tracker->filter_type < 3)
						{
							tracker->filter_type++;
						}

						tracker->sound_engine.channel[0].filter_mode = tracker->filter_type;
						break;
					}
				}
			}

			if(event.input.key == InputKeyLeft && event.input.type == InputTypeShort) 
			{
				switch(tracker->selected_param)
				{
					case PARAM_FREQUENCY:
					{
						if(tracker->frequency > 25)
						{
							tracker->frequency -= 25;
						}

						sound_engine_set_channel_frequency(&tracker->sound_engine, &tracker->sound_engine.channel[0], tracker->frequency * 1024);

						break;
					}

					case PARAM_WAVEFORM:
					{
						if(tracker->current_waveform_index > 0)
						{
							tracker->current_waveform_index--;
						}
						
						tracker->sound_engine.channel[0].waveform = waveforms[tracker->current_waveform_index];

						break;
					}

					case PARAM_PW:
					{
						if(tracker->pw - 0x80 > 0)
						{
							tracker->pw -= 0x80;
						}

						else
						{
							tracker->pw = 0xF80;
						}

						tracker->sound_engine.channel[0].pw = tracker->pw;

						break;
					}

					case PARAM_ENABLE_FILTER:
					{
						tracker->flags ^= SE_ENABLE_FILTER;

						tracker->sound_engine.channel[0].filter_mode = FIL_OUTPUT_LOWPASS;
						
						tracker->sound_engine.channel[0].flags = tracker->flags;

						break;
					}

					case PARAM_FILTER_CUTOFF:
					{
						if(tracker->cutoff > 10)
						{
							tracker->cutoff -= 10;
						}
						
						tracker->sound_engine.channel[0].filter_cutoff = tracker->cutoff;
						sound_engine_filter_set_coeff(&tracker->sound_engine.channel[0].filter, tracker->cutoff, tracker->resonance);

						break;
					}

					case PARAM_FILTER_RESONANCE:
					{
						if(tracker->resonance > 0)
						{
							tracker->resonance--;
							sound_engine_filter_set_coeff(&tracker->sound_engine.channel[0].filter, tracker->cutoff, tracker->resonance * 50);
						}

						break;
					}

					case PARAM_FILTER_TYPE:
					{
						if(tracker->filter_type > 0)
						{
							tracker->filter_type--;
						}

						tracker->sound_engine.channel[0].filter_mode = tracker->filter_type;
						break;
					}
				}
			}
		}
	}

	deinit_tracker(tracker);

	notification_message(tracker->notification, &sequence_display_backlight_enforce_auto);
	furi_record_close(RECORD_NOTIFICATION);

	// Специальная очистка памяти, занимаемой очередью
	furi_message_queue_free(event_queue);

	// Чистим созданные объекты, связанные с интерфейсом
	gui_remove_view_port(gui, view_port);
	view_port_free(view_port);
	furi_record_close(RECORD_GUI);

	free(tracker);

	return 0;
}