1 package kaka.cakelight;
3 import org.opencv.core.CvType;
4 import org.opencv.core.Mat;
5 import org.opencv.core.Size;
6 import org.opencv.imgproc.Imgproc;
8 import static kaka.cakelight.Main.saveFile;
9 import static kaka.cakelight.Main.timeIt;
13 private Configuration config;
16 private Mat converted;
18 private Frame(byte[] data) {
22 public static Frame of(byte[] data, Configuration config) {
23 Frame frame = new Frame(data);
24 frame.config = config;
29 private void convert() {
30 /* TODO: how to do this?
31 1) Resize to an image with the size of the number of leds and use config to define how many pixels deep into the screen to use.
32 2) Resize to 16x9 and use 2 pixels of depth (or maybe 3) and interpolate for each led.
33 3) Resize to 2 images where each led uses 2 pixels:
34 vertical - 16 x <#leds>
35 horizontal - <#leds> x 9
36 4) Resize to cols x rows first, then resize to a vertical and a horizontal like in (3).
38 Mat src = new Mat(config.video.height, config.video.width, CvType.CV_8UC2); // 8-bit, unsigned, 2 channels
41 // Mat converted = new Mat();
42 // Mat resized = new Mat();
44 // timeIt("total", () -> {
45 // timeIt("yuyv2rgb", () -> Imgproc.cvtColor(src, converted, Imgproc.COLOR_YUV2RGB_YUYV)); // 3.5 - 4.0 ms
46 // timeIt("resizing", () -> Imgproc.resize(converted, resized, new Size(config.leds.cols, config.leds.rows), 0, 0, Imgproc.INTER_AREA)); // INTER_AREA is the best for shrinking, but also the slowest (~1.5 ms)
49 Mat cropped = src.submat(
50 config.video.crop.top,
51 config.video.height - config.video.crop.bottom,
52 config.video.crop.left,
53 config.video.width - config.video.crop.right
55 converted = new Mat();
56 Imgproc.cvtColor(cropped, converted, config.video.format);
57 // timeIt("model 1", () -> model1(converted, Imgproc.INTER_AREA));
58 // timeIt("model 2", () -> model2(converted, Imgproc.INTER_AREA));
59 timeIt("model 3", () -> model3(converted, Imgproc.INTER_AREA));
60 // save(converted, "/home/kaka/test-converted.data");
61 // save(resized, "/home/kaka/test-resized.data");
66 private void model1(Mat src, int interpolation) {
67 Mat resized = new Mat();
68 Imgproc.resize(src, resized, new Size(config.leds.cols, config.leds.rows), 0, 0, interpolation);
71 private void model2(Mat src, int interpolation) {
72 Mat resized = new Mat();
73 Imgproc.resize(src, resized, new Size(16, 9), 0, 0, interpolation);
76 private void model3(Mat src, int interpolation) {
79 Imgproc.resize(src, colImage, new Size(config.leds.cols, 9), 0, 0, interpolation);
80 Imgproc.resize(src, rowImage, new Size(16, config.leds.rows), 0, 0, interpolation);
83 public Color getLedColor(ListPosition listPosition, int xy) {
84 // TODO: maybe use highest value from pixels? 100 % from 1st, 66 % from 2nd, 33 % from 3rd. colors might be strange.
85 switch (listPosition) {
87 return interpolatedRowColor(xy, 0, 1, 2);
89 return interpolatedRowColor(xy, 15, 14, 13);
91 return interpolatedColColor(xy, 0, 1, 2);
93 return interpolatedColColor(xy, 8, 7, 6);
98 private Color interpolatedRowColor(int y, int x1, int x2, int x3) {
99 return pixelToColor(rowImage, x3, y).interpolate(pixelToColor(rowImage, x2, y), 0.65).interpolate(pixelToColor(rowImage, x1, y), 0.65);
102 private Color interpolatedColColor(int x, int y1, int y2, int y3) {
103 return pixelToColor(colImage, x, y3).interpolate(pixelToColor(colImage, x, y2), 0.65).interpolate(pixelToColor(colImage, x, y1), 0.65);
106 private Color pixelToColor(Mat image, int x, int y) {
107 byte[] rgb = new byte[3];
108 image.get(y, x, rgb);
109 return Color.rgb(rgb[0] & 0xff, rgb[1] & 0xff, rgb[2] & 0xff);
112 private void save(Mat mat, String filepath) {
113 byte[] data = new byte[mat.cols() * mat.rows() * mat.channels()];
115 saveFile(data, filepath);
118 public byte[] getData() {
119 byte[] buff = new byte[(int) (converted.total() * converted.channels())];
120 converted.get(0, 0, buff);
124 public Mat getColImage() {
128 public Mat getRowImage() {
132 public Mat getConvertedImage() {
137 * Creates a LED frame going counter-clockwise from the bottom-left corner, sans the corners.
139 public LedFrame getLedFrame() {
140 LedFrame frame = LedFrame.from(config);
142 for (int i = 0; i < config.leds.cols; i++) frame.setLedColor(led++, getLedColor(ListPosition.BOTTOM, i));
143 for (int i = config.leds.rows - 1; i >= 0; i--) frame.setLedColor(led++, getLedColor(ListPosition.RIGHT, i));
144 for (int i = config.leds.cols - 1; i >= 0; i--) frame.setLedColor(led++, getLedColor(ListPosition.TOP, i));
145 for (int i = 0; i < config.leds.rows; i++) frame.setLedColor(led++, getLedColor(ListPosition.LEFT, i));