src/com/android/gallery3d/util/GifRequest.java

/*
 * Copyright (c) 2016, The Linux Foundation. All rights reserved.

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.android.gallery3d.util;

import android.content.ContentResolver;
import android.content.Context;
import android.net.Uri;
import android.util.Log;

import com.android.gallery3d.util.ThreadPool.Job;
import com.android.gallery3d.util.ThreadPool.JobContext;

import java.io.InputStream;
import java.io.IOException;


public class GifRequest implements Job<GifDecoder> {

    private static final String TAG = "GifRequest";
    Uri itemUri;
    Context mContext;

    public GifRequest(Uri uri, Context context) {
        itemUri = uri;
        mContext = context;
    }

    private InputStream getInputStream(Uri uri) {
        ContentResolver cr = mContext.getContentResolver();
        InputStream input = null;
        try {
            input = cr.openInputStream(uri);
        } catch (IOException e) {
            Log.e(TAG, "catch exception:" + e);
        }
        return input;
    }

    @Override
    public GifDecoder run(JobContext jc) {
        InputStream input = getInputStream(itemUri);
        if (input != null) {
            return new GifDecoder(getInputStream(itemUri), null);
        } else {
            return null;
        }
    }


}