BlockBitmap.java 文件源码

public void buildBlocksFromImage(InputStream imageStream) {

        this.originalImageInputStream = imageStream;

        BitmapRegionDecoder brp = null;

        try {
            brp = BitmapRegionDecoder.newInstance(imageStream, false);
        } catch (IOException e) {
            e.printStackTrace();
        }

        for (int row = 0; row < this.rowCount; row++) {
            for (int col = 0; col < this.columnCount; col++) {
                int left = col * subdivisionWidth, top = row * subdivisionWidth;
                int right = left + subdivisionWidth, bottom = top + subdivisionWidth;
                Bitmap region = brp.decodeRegion(new Rect(left, top, right, bottom), null);
                RgbColor averageColor = calculateAverageColor(region);
                Block bestBlock = Block.bestMatchedBlock(averageColor);
                this.setBlockAtIndices(row, col, bestBlock);
            }
        }

        return;
    }