Renamed scripts and executable

src/main.cpp

@@ -0,0 +1,121 @@
+#include <stdio.h>
+#include <cstdint>
+#include <vector>
+#include <stdexcept>
+// For reading FIFO
+#include <fcntl.h>
+#include <unistd.h>
+
+// Local files
+#include "utility/bitmap.hpp"
+#include "utility/buffer.hpp"
+#include "signal_processing/fft.hpp"
+#include "ergodox.hpp"
+#include "commands.h"
+
+
+// TODO:
+// stereo support (and maybe different bitrates?)
+// Optimization: don't copy filename in buffer?
+// understand consumption rate
+// understand BIN2HZ
+// understand values and sizes (DFT_TOTAL, DFT_NONZERO, etc)
+//   note that wave and spectrum have different sizes
+//
+// MPD interface
+// hid interface to keyboard
+// beat detection
+
+
+void draw_spectrum_bitmap(
+	const std::vector<size_t>& waveform,
+	Bitmap& bitmap
+) {
+	for (size_t x = 0; x < waveform.size(); x++) {
+		for (size_t y = 0; y < waveform[x]; y++) {
+			bitmap.setpixel(bitmap.get_height() - y - 1, x, 0xFF, 0x00, 0x00);
+		}
+	}
+}
+
+
+
+// How many keys in a column * resolution per key.
+// this MUST fit inside a uint8_t.
+const uint8_t kb_resolution = 5 * 50;
+
+// How many resolution steps to skip at the top and bottom.
+const size_t bottom_skip = 25;
+const size_t top_skip = 50;
+
+
+const size_t width = 12;
+const size_t height = bottom_skip + kb_resolution + top_skip;
+
+
+int main(int argc, char *argv[]) {
+
+	// buffer size for waveform:
+	// (44100 / fps * 10), make 10 bigger for slower scrolling
+	//
+	// Double both buffer sizes if stereo
+
+	// FFT generator
+	FFT_Visualizer fft = FFT_Visualizer(
+		width, height,
+		100, 5000
+	);
+
+	// Audio buffer
+	Buffer buf = Buffer(
+		"/tmp/mpd.fifo",
+		44100 / 2, // Keep 500ms of data in buffer
+		fft.compute_buffer_output_size()
+	);
+
+	// HID interface wrapper
+	Ergodox Dox = Ergodox::init(
+		0x3297,
+		0x4976,
+		0x61,
+		0xFF60
+	);
+
+	// Write buffer
+	uint8_t hid_buf[12];
+
+	while (1) {
+
+
+		if (Dox.get_animation_mode() == 0x02) {
+			buf.update();
+			fft.update(buf);
+
+			hid_buf[0] = CMD_ANIM_DATA_fft;
+			for (size_t i = 0; i < 10; i++) {
+				// Get height from fft, apply bottom_skip
+				ssize_t h = fft.get_output()[i + 1] - bottom_skip;
+
+				// Enforce max and min
+				// max implicitly enforces top_skip
+				h = h>kb_resolution ? kb_resolution : h;
+				h = h<0 ? 0 : h;
+
+				hid_buf[i + 1] = h;
+			}
+			Dox.write(CMD_ANIM_DATA, hid_buf, 13);
+		}
+
+		// Read a packet if there is a packet to read
+		if (Dox.read()) {
+			uint8_t cmd = Dox.read_buf[0];
+
+			switch(cmd) {
+				case CMD_SEND_STATE:
+					break;
+			}
+		}
+	}
+
+	return 0;
+}