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/**************************************************************************
*
* Copyright (C) 2015 Collabora Ltd.
* Author: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#pragma once
#include <iostream>
#include "image.hpp"
#include "os_string.hpp"
#include "thread_pool.hpp"
#include "retrace.hpp"
namespace image {
class Image;
}
namespace retrace {
extern int verbosity;
}
static void
actuallyWritePNG(const os::String& filename, image::Image *image) {
// Alpha channel often has bogus data, so strip it when writing
// PNG images to disk to simplify visualization.
bool strip_alpha = true;
if (image->writePNG(filename, strip_alpha) &&
retrace::verbosity >= 0) {
std::cout << "Wrote " << filename << "\n";
}
delete image;
}
/**
* Write one snapshot at a time, blocking until it is finished.
*/
class Snapshotter
{
public:
Snapshotter() {}
virtual ~Snapshotter() {}
virtual void
writePNG(const os::String& filename, image::Image *image) {
actuallyWritePNG(filename, image);
}
};
/**
* Write nb_thread snapshots at a time, to better use the available CPU resources.
*/
class ThreadedSnapshotter : public Snapshotter
{
private:
ThreadPool pool;
ThreadedSnapshotter() = delete;
public:
ThreadedSnapshotter(size_t nb_threads) : pool(nb_threads) {}
virtual void
writePNG(const os::String& filename, image::Image *image) override {
pool.enqueue(actuallyWritePNG, filename, image);
}
};
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