xdsopl/robot36
1
0
Fork 0
mirror of https://github.com/xdsopl/robot36.git synced 2026-01-06 16:29:56 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fixed indents to tabs

Browse source
This commit is contained in:
Marek Ossowski 2025-08-19 23:19:26 +02:00
parent 02018686b6
commit 5aa3be6cc9
2 changed files with 105 additions and 105 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
app/src/main/java/xdsopl/robot36/BaseMode.java
View file

@ -3,8 +3,8 @@ package xdsopl.robot36;
import android.graphics.Bitmap; import android.graphics.Bitmap;
public abstract class BaseMode implements Mode { public abstract class BaseMode implements Mode {
@Override @Override
public Bitmap postProcessScopeImage(Bitmap bmp) { public Bitmap postProcessScopeImage(Bitmap bmp) {
return Bitmap.createScaledBitmap(bmp, bmp.getWidth() / 3, bmp.getHeight() / 3, true); return Bitmap.createScaledBitmap(bmp, bmp.getWidth() / 3, bmp.getHeight() / 3, true);
} }
} }

202
app/src/main/java/xdsopl/robot36/HFFax.java
View file

@ -9,123 +9,123 @@ import android.graphics.Rect;
* HF Fax, IOC 576, 120 lines per minute * HF Fax, IOC 576, 120 lines per minute
*/ */
public class HFFax extends BaseMode { public class HFFax extends BaseMode {
private final ExponentialMovingAverage lowPassFilter; private final ExponentialMovingAverage lowPassFilter;
private final String name; private final String name;
private final int sampleRate; private final int sampleRate;
private final float[] cumulated; private final float[] cumulated;
private int horizontalShift = 0; private int horizontalShift = 0;
HFFax(String name, int sampleRate) { HFFax(String name, int sampleRate) {
this.name = name; this.name = name;
lowPassFilter = new ExponentialMovingAverage(); lowPassFilter = new ExponentialMovingAverage();
this.sampleRate = sampleRate; this.sampleRate = sampleRate;
cumulated = new float[getWidth()]; cumulated = new float[getWidth()];
} }
private float freqToLevel(float frequency, float offset) { private float freqToLevel(float frequency, float offset) {
return 0.5f * (frequency - offset + 1.f); return 0.5f * (frequency - offset + 1.f);
} }
@Override @Override
public String getName() { public String getName() {
return name; return name;
} }
@Override @Override
public int getCode() { public int getCode() {
return -1; return -1;
} }
@Override @Override
public int getWidth() { public int getWidth() {
return 1808; return 1808;
} }
@Override @Override
public int getHeight() { public int getHeight() {
return 1200; return 1200;
} }
@Override @Override
public int getBegin() { public int getBegin() {
return 0; return 0;
} }
@Override @Override
public int getFirstSyncPulseIndex() { public int getFirstSyncPulseIndex() {
return -1; return -1;
} }
@Override @Override
public int getScanLineSamples() { public int getScanLineSamples() {
return sampleRate / 2; return sampleRate / 2;
} }
@Override @Override
public void reset() { public void reset() {
} }
@Override @Override
public Bitmap postProcessScopeImage(Bitmap bmp) { public Bitmap postProcessScopeImage(Bitmap bmp) {
if (horizontalShift > 0) { if (horizontalShift > 0) {
Bitmap bmpMutable = Bitmap.createBitmap(getWidth(), bmp.getHeight(), Bitmap.Config.ARGB_8888); Bitmap bmpMutable = Bitmap.createBitmap(getWidth(), bmp.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bmpMutable); Canvas canvas = new Canvas(bmpMutable);
canvas.drawBitmap( canvas.drawBitmap(
bmp, bmp,
new Rect(0, 0, horizontalShift, bmp.getHeight()), new Rect(0, 0, horizontalShift, bmp.getHeight()),
new Rect(getWidth() - horizontalShift, 0, getWidth(), bmp.getHeight()), new Rect(getWidth() - horizontalShift, 0, getWidth(), bmp.getHeight()),
null); null);
canvas.drawBitmap( canvas.drawBitmap(
bmp, bmp,
new Rect(horizontalShift, 0, getWidth(), bmp.getHeight()), new Rect(horizontalShift, 0, getWidth(), bmp.getHeight()),
new Rect(0, 1, getWidth() - horizontalShift, bmp.getHeight() + 1), new Rect(0, 1, getWidth() - horizontalShift, bmp.getHeight() + 1),
null); null);
return bmpMutable; return bmpMutable;
} }
return bmp; return bmp;
} }
@Override @Override
public boolean decodeScanLine(PixelBuffer pixelBuffer, float[] scratchBuffer, float[] scanLineBuffer, int scopeBufferWidth, int syncPulseIndex, int scanLineSamples, float frequencyOffset) { public boolean decodeScanLine(PixelBuffer pixelBuffer, float[] scratchBuffer, float[] scanLineBuffer, int scopeBufferWidth, int syncPulseIndex, int scanLineSamples, float frequencyOffset) {
if (syncPulseIndex < 0 || syncPulseIndex + scanLineSamples > scanLineBuffer.length) if (syncPulseIndex < 0 || syncPulseIndex + scanLineSamples > scanLineBuffer.length)
return false; return false;
int horizontalPixels = getWidth(); int horizontalPixels = getWidth();
lowPassFilter.cutoff(horizontalPixels, 2 * scanLineSamples, 2); lowPassFilter.cutoff(horizontalPixels, 2 * scanLineSamples, 2);
lowPassFilter.reset(); lowPassFilter.reset();
for (int i = 0; i < scanLineSamples; ++i) for (int i = 0; i < scanLineSamples; ++i)
scratchBuffer[i] = lowPassFilter.avg(scanLineBuffer[i]); scratchBuffer[i] = lowPassFilter.avg(scanLineBuffer[i]);
lowPassFilter.reset(); lowPassFilter.reset();
for (int i = scanLineSamples - 1; i >= 0; --i) for (int i = scanLineSamples - 1; i >= 0; --i)
scratchBuffer[i] = freqToLevel(lowPassFilter.avg(scratchBuffer[i]), frequencyOffset); scratchBuffer[i] = freqToLevel(lowPassFilter.avg(scratchBuffer[i]), frequencyOffset);
for (int i = 0; i < horizontalPixels; ++i) { for (int i = 0; i < horizontalPixels; ++i) {
int position = (i * scanLineSamples) / horizontalPixels; int position = (i * scanLineSamples) / horizontalPixels;
int color = ColorConverter.GRAY(scratchBuffer[position]); int color = ColorConverter.GRAY(scratchBuffer[position]);
pixelBuffer.pixels[i] = color; pixelBuffer.pixels[i] = color;
//accumulate recent values, forget old //accumulate recent values, forget old
float decay = 0.99f; float decay = 0.99f;
cumulated[i] = cumulated[i] * decay + Color.luminance(color) * (1 - decay); cumulated[i] = cumulated[i] * decay + Color.luminance(color) * (1 - decay);
} }
//try to detect "sync": thick white margin //try to detect "sync": thick white margin
int bestIndex = 0; int bestIndex = 0;
float bestValue = 0; float bestValue = 0;
for (int x = 0; x < getWidth(); ++x) for (int x = 0; x < getWidth(); ++x)
{ {
float val = cumulated[x]; float val = cumulated[x];
if (val > bestValue) if (val > bestValue)
{ {
bestIndex = x; bestIndex = x;
bestValue = val; bestValue = val;
} }
} }
horizontalShift = bestIndex; horizontalShift = bestIndex;
pixelBuffer.width = horizontalPixels; pixelBuffer.width = horizontalPixels;
pixelBuffer.height = 1; pixelBuffer.height = 1;
return true; return true;
} }
} }