diff options
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/src/main.c b/src/main.c deleted file mode 100644 index 10d00eb..0000000 --- a/src/main.c +++ /dev/null @@ -1,195 +0,0 @@ -#include <gtk/gtk.h> -#include <cairo/cairo.h> -#include <portaudio.h> - -typedef struct { - int device_num; - int chanel_cnt; - float *chanels; -} AudioData; - -typedef struct { - int device_num; -} SelectedDevice; - -AudioData audiodata; -PaStream *stream = NULL; -GtkWidget *drawing_area; - -#define FRAMES_PER_BUFFER 256 - -int patestCallback(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags, void *userData) -{ - AudioData *data = (AudioData *)userData; - float *in = (float *)inputBuffer; - - for (int i = 0; i < data->chanel_cnt; i++) { - if (data->chanels[i] > 0) { - data->chanels[i] -= 0.005; - } - } - - for (unsigned long i = 0; i < framesPerBuffer * data->chanel_cnt; i += data->chanel_cnt) { - for (int j = 0; j < data->chanel_cnt; j++) { - data->chanels[j] = MAX(data->chanels[j], fabs(in[i + j])); - } - } - - if (drawing_area) { - gtk_widget_queue_draw(GTK_WIDGET(drawing_area)); - } - - return 0; -} - -static void select_device(GtkWidget *widget, gpointer data) -{ - if (stream != NULL) { - Pa_StopStream(stream); - Pa_CloseStream(stream); - stream = NULL; - } - - int device_num = ((SelectedDevice *)data)->device_num; - printf("Device %d selected\n", device_num); - - PaStreamParameters inputParameters; - memset(&inputParameters, 0, sizeof(inputParameters)); - inputParameters.channelCount = Pa_GetDeviceInfo(device_num)->maxInputChannels; - inputParameters.device = device_num; - inputParameters.hostApiSpecificStreamInfo = NULL; - inputParameters.sampleFormat = paFloat32; - inputParameters.suggestedLatency = Pa_GetDeviceInfo(device_num)->defaultLowInputLatency; - - audiodata.device_num = device_num; - audiodata.chanel_cnt = inputParameters.channelCount; - audiodata.chanels = (float *)calloc(audiodata.chanel_cnt, sizeof(float)); - - Pa_OpenStream(&stream, &inputParameters, NULL, Pa_GetDeviceInfo(device_num)->defaultSampleRate, FRAMES_PER_BUFFER, paNoFlag, patestCallback, &audiodata); - Pa_StartStream(stream); -} - -static void draw(cairo_t *cr, GtkWidget *area) -{ - float window_width = 900; - float window_height = 900; - float radius = 200; - float space = 50; - float delta, x, y; - - delta = 2 * M_PI / audiodata.chanel_cnt; - - cairo_set_source_rgba(cr, 1, 1, 1, 1); - cairo_arc(cr, window_width / 2, window_height / 2, space, 0, 2 * M_PI); - cairo_fill(cr); - - cairo_set_source_rgba(cr, 1, 0, 0, 1); - for (int i = 0; i < audiodata.chanel_cnt; i += 2) { - x = (radius + space) * cos(i * delta / 2); - y = (radius + space) * sin(i * delta / 2); - - cairo_arc(cr, window_width / 2 - x, window_height / 2 - y, audiodata.chanels[i] * radius, 0, 2 * M_PI); - cairo_arc(cr, window_width / 2 + x, window_height / 2 + y, audiodata.chanels[i + 1] * radius, 0, 2 * M_PI); - } - cairo_fill(cr); - - gtk_widget_queue_draw(area); -} - -static void draw_cb(GtkDrawingArea *drawing_area, cairo_t *cr, int width, int height, gpointer data) -{ - cairo_paint(cr); - draw(cr, (GtkWidget *)data); -} - -static void refresh(GtkWidget *grid) -{ - Pa_Terminate(); - Pa_Initialize(); - int numDevices = Pa_GetDeviceCount(); - - if (numDevices < 0) { - printf("Error getting device count.\n"); - exit(EXIT_FAILURE); - } else if (numDevices == 0) { - printf("There are no available audio devices on this machine.\n"); - exit(EXIT_SUCCESS); - } - - GtkWidget *button; - - for (int i = 0; i < numDevices; i++) { - const PaDeviceInfo *deviceInfo = Pa_GetDeviceInfo(i); - SelectedDevice *sel_dev = (SelectedDevice *)malloc(sizeof(SelectedDevice)); - sel_dev->device_num = i; - button = gtk_button_new_with_label(deviceInfo->name); - g_signal_connect(button, "clicked", G_CALLBACK(select_device), sel_dev); - gtk_grid_attach(GTK_GRID(grid), button, 0, numDevices - i - 1, 1, 1); - } - - gtk_widget_queue_draw(grid); -} - -static void close_window(GtkWindow *window) -{ - if (stream != NULL) { - Pa_StopStream(stream); - Pa_CloseStream(stream); - stream = NULL; - } - - Pa_Terminate(); - - gtk_window_destroy(window); -} - -static void activate(GtkApplication *app, gpointer user_data) -{ - GtkWidget *window; - GtkWidget *grid; - GtkWidget *button; - - // init window - window = gtk_application_window_new(app); - gtk_window_set_title(GTK_WINDOW(window), "Directional Audio Visualizer"); - - // init grid - grid = gtk_grid_new(); - gtk_window_set_child(GTK_WINDOW(window), grid); - - // init drawing_area - drawing_area = gtk_drawing_area_new(); - gtk_widget_set_size_request(drawing_area, 900, 900); - gtk_drawing_area_set_draw_func(GTK_DRAWING_AREA(drawing_area), draw_cb, drawing_area, NULL); - gtk_grid_attach(GTK_GRID(grid), drawing_area, 1, 2, 100, 100); - - // init audio devices - Pa_Initialize(); - refresh(grid); - - // init button for refresh - button = gtk_button_new_with_label("Refresh"); - g_signal_connect_swapped(button, "clicked", G_CALLBACK(refresh), grid); - gtk_grid_attach(GTK_GRID(grid), button, 1, 0, 1, 1); - - // init button for quit - button = gtk_button_new_with_label("Quit"); - g_signal_connect_swapped(button, "clicked", G_CALLBACK(close_window), window); - gtk_grid_attach(GTK_GRID(grid), button, 1, 1, 1, 1); - - // set window - gtk_window_present(GTK_WINDOW(window)); -} - -int main(int argc, char **argv) -{ - GtkApplication *app; - int status; - - app = gtk_application_new("org.gtk.example", G_APPLICATION_DEFAULT_FLAGS); - g_signal_connect(app, "activate", G_CALLBACK(activate), NULL); - status = g_application_run(G_APPLICATION(app), argc, argv); - g_object_unref(app); - - return status; -} |