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Move convertYUV420ToARGB8888 to background thread #9

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Move convertYUV420ToARGB8888 to background thread #9

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49 changes: 27 additions & 22 deletions android/src/org/tensorflow/demo/ClassifierActivity.java
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Original file line number Diff line number Diff line change
Expand Up @@ -177,6 +177,10 @@ public void drawCallback(final Canvas canvas) {
public void onImageAvailable(final ImageReader reader) {
Image image = null;

final int yRowStride;
final int uvRowStride;
final int uvPixelStride;

try {
image = reader.acquireLatestImage();

Expand All @@ -195,19 +199,9 @@ public void onImageAvailable(final ImageReader reader) {
final Plane[] planes = image.getPlanes();
fillBytes(planes, yuvBytes);

final int yRowStride = planes[0].getRowStride();
final int uvRowStride = planes[1].getRowStride();
final int uvPixelStride = planes[1].getPixelStride();
ImageUtils.convertYUV420ToARGB8888(
yuvBytes[0],
yuvBytes[1],
yuvBytes[2],
previewWidth,
previewHeight,
yRowStride,
uvRowStride,
uvPixelStride,
rgbBytes);
yRowStride = planes[0].getRowStride();
uvRowStride = planes[1].getRowStride();
uvPixelStride = planes[1].getPixelStride();

image.close();
} catch (final Exception e) {
Expand All @@ -219,19 +213,30 @@ public void onImageAvailable(final ImageReader reader) {
return;
}

rgbFrameBitmap.setPixels(rgbBytes, 0, previewWidth, 0, 0, previewWidth, previewHeight);
final Canvas canvas = new Canvas(croppedBitmap);
canvas.drawBitmap(rgbFrameBitmap, frameToCropTransform, null);

// For examining the actual TF input.
if (SAVE_PREVIEW_BITMAP) {
ImageUtils.saveBitmap(croppedBitmap);
}

runInBackground(
new Runnable() {
@Override
public void run() {
ImageUtils.convertYUV420ToARGB8888(
yuvBytes[0],
yuvBytes[1],
yuvBytes[2],
previewWidth,
previewHeight,
yRowStride,
uvRowStride,
uvPixelStride,
rgbBytes);

rgbFrameBitmap.setPixels(rgbBytes, 0, previewWidth, 0, 0, previewWidth, previewHeight);
final Canvas canvas = new Canvas(croppedBitmap);
canvas.drawBitmap(rgbFrameBitmap, frameToCropTransform, null);

// For examining the actual TF input.
if (SAVE_PREVIEW_BITMAP) {
ImageUtils.saveBitmap(croppedBitmap);
}

final long startTime = SystemClock.uptimeMillis();
final List<Classifier.Recognition> results = classifier.recognizeImage(croppedBitmap);
lastProcessingTimeMs = SystemClock.uptimeMillis() - startTime;
Expand Down