library/src/main/java/com/bumptech/glide/load/resource/bitmap/FileDescriptorBitmapDecoder.java

package com.bumptech.glide.load.resource.bitmap;

import android.graphics.Bitmap;
import android.os.ParcelFileDescriptor;

import com.bumptech.glide.load.DecodeFormat;
import com.bumptech.glide.load.ResourceDecoder;
import com.bumptech.glide.load.engine.Resource;
import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;

import java.io.IOException;

public class FileDescriptorBitmapDecoder implements ResourceDecoder<ParcelFileDescriptor, Bitmap> {
    private final VideoBitmapDecoder bitmapDecoder;
    private final BitmapPool bitmapPool;
    private DecodeFormat decodeFormat;

    public FileDescriptorBitmapDecoder(BitmapPool bitmapPool) {
        this(new VideoBitmapDecoder(), bitmapPool, DecodeFormat.ALWAYS_ARGB_8888);
    }

    public FileDescriptorBitmapDecoder(VideoBitmapDecoder bitmapDecoder, BitmapPool bitmapPool,
            DecodeFormat decodeFormat) {
        this.bitmapDecoder = bitmapDecoder;
        this.bitmapPool = bitmapPool;
        this.decodeFormat = decodeFormat;
    }

    @Override
    public Resource<Bitmap> decode(ParcelFileDescriptor source, int width, int height) throws IOException {
        Bitmap bitmap = bitmapDecoder.decode(source, bitmapPool, width, height, decodeFormat);
        if (bitmap == null) {
            return null;
        } else {
            return new BitmapResource(bitmap, bitmapPool);
        }
    }

    @Override
    public String getId() {
        return "FileDescriptorBitmapDecoder.com.bumptech.glide.load.data.bitmap";
    }
}