87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* Copyright the Collabora Online contributors.
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/*
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* Benchmark various bits of cool code.
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*/
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#include "config.h"
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#include <chrono>
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#include <common/Png.hpp>
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#include <kit/Delta.hpp>
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typedef std::vector<char> Pixmap;
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std::vector<Pixmap> pixmaps;
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class DeltaTests {
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public:
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static void rleBitmap(Pixmap &pix)
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{
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TileLocation loc = { 0, 0, 0, 0, 0 };
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DeltaGenerator::DeltaData rleData(
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1 /*wid*/, reinterpret_cast<unsigned char *>(pix.data()),
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0, 0, 256, 256, loc, 256, 256);
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}
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static void timeRLE(const char *description)
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{
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std::cout << "Benchmark " << description << "\n";
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int deltas = 0;
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const auto start = std::chrono::steady_clock::now();
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// check we have enough work:
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int maxIters = (50000 + pixmaps.size() - 1) / pixmaps.size();
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for (int it = 0; it < maxIters; ++it)
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{
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// std::cerr << "iter " << it << "\n";
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for (Pixmap &pix : pixmaps)
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{
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deltas++;
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rleBitmap(pix);
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}
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}
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const auto end = std::chrono::steady_clock::now();
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std::cout << "took: " <<
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std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count() << "ms - ";
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assert(deltas && "div by zero otherwise");
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std::cout << "time/rle: " <<
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(1.0*std::chrono::duration_cast<std::chrono::microseconds>(end - start).count())/deltas << "us\n";
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}
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};
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int main (int argc, char **argv)
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{
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for (int i = 1; i < argc; i++)
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{
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uint32_t height, width, rowBytes;
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Pixmap img = Png::loadPng(argv[i], height, width, rowBytes);
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// std::cout << "Loaded: " << argv[i] << " " << width << "x" << height << "\n";
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pixmaps.push_back(img);
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}
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DeltaTests::timeRLE("CPU");
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simd::init();
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DeltaTests::timeRLE("SIMD");
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return 0;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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