src/com/android/gallery3d/filtershow/pipeline/RenderingRequestTask.java

/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.gallery3d.filtershow.pipeline;

import android.graphics.Bitmap;
import com.android.gallery3d.filtershow.filters.FiltersManager;

public class RenderingRequestTask extends ProcessingTask {

    private CachingPipeline mPreviewPipeline = null;
    private boolean mPipelineIsOn = false;

    public void setPreviewScaleFactor(float previewScale) {
        mPreviewPipeline.setPreviewScaleFactor(previewScale);
    }

    static class Render implements Request {
        RenderingRequest request;
    }

    static class RenderResult implements Result {
        RenderingRequest request;
    }

    public RenderingRequestTask() {
        mPreviewPipeline = new CachingPipeline(
                FiltersManager.getManager(), "Normal");
    }

    public void setOriginal(Bitmap bitmap) {
        mPreviewPipeline.setOriginal(bitmap);
        mPipelineIsOn = true;
    }

    public void stop() {
        mPreviewPipeline.stop();
    }

    public void postRenderingRequest(RenderingRequest request) {
        if (!mPipelineIsOn) {
            return;
        }
        Render render = new Render();
        render.request = request;
        postRequest(render);
    }

    @Override
    public Result doInBackground(Request message) {
        RenderingRequest request = ((Render) message).request;
        RenderResult result = null;
        if (request.getType() == RenderingRequest.GEOMETRY_RENDERING) {
            mPreviewPipeline.renderGeometry(request);
        } else if (request.getType() == RenderingRequest.FILTERS_RENDERING) {
            mPreviewPipeline.renderFilters(request);
        } else {
            mPreviewPipeline.render(request);
        }
        result = new RenderResult();
        result.request = request;
        return result;
    }

    @Override
    public void onResult(Result message) {
        if (message == null) {
            return;
        }
        RenderingRequest request = ((RenderResult) message).request;
        request.markAvailable();
    }

}