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https://github.com/alexkay/spek.git
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92 lines
2.8 KiB
C++
92 lines
2.8 KiB
C++
/* perf.cc
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*
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* Copyright (C) 2013-2014 Alexander Kojevnikov <alexander@kojevnikov.com>
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*
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* Spek is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Spek is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Spek. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <cstdlib>
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#include <iostream>
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#include <fstream>
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const char *SAMPLE_FILE = SAMPLES_DIR "/perf.wav";
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const int SAMPLE_RATE = 44100;
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const int SAMPLE_DURATION = 8 * 60; // 8 minutes
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const int SAMPLES = SAMPLE_RATE * SAMPLE_DURATION; // per channel
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// Some of the tests will use a sample .wav file which is auto-generated if it doesn't exists.
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static void create_samples()
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{
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if (std::ifstream(SAMPLE_FILE).good()) {
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return;
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}
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std::ofstream file(SAMPLE_FILE, std::ofstream::binary);
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const int data_size = SAMPLES * 2 * 2; // samples * channels * bytes per sample
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uint16_t u16;
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uint32_t u32;
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file.write("RIFF", 4);
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file.write(reinterpret_cast<const char*>(&(u32 = 36 + data_size)), 4); // size
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file.write("WAVE", 4);
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file.write("fmt ", 4);
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file.write(reinterpret_cast<const char*>(&(u32 = 16)), 4); // subchunk size
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file.write(reinterpret_cast<const char*>(&(u16 = 1)), 2); // 1 = PCM
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file.write(reinterpret_cast<const char*>(&(u16 = 2)), 2); // 2 = stereo
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file.write(reinterpret_cast<const char*>(&(u32 = SAMPLE_RATE)), 4);
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file.write(reinterpret_cast<const char*>(&(u32 = SAMPLE_RATE * 2 * 2)), 4); // byte rate
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file.write(reinterpret_cast<const char*>(&(u16 = 2 * 2)), 2); // block align
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file.write(reinterpret_cast<const char*>(&(u16 = 16)), 2); // bits per sample
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file.write("data", 4);
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file.write(reinterpret_cast<const char*>(&(u32 = data_size)), 4);
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// Fill in both channels with pseudo-random values.
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srand(93);
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for (int i = 0; i < SAMPLES * 2; ++i) {
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file.write(reinterpret_cast<const char*>(&(u16 = rand())), 2);
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}
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}
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// Reading and decoding an audio file.
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static void perf_decoder()
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{
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}
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// Running FFTs and processing the results.
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static void perf_worker()
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{
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}
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// Managing worker and decoder threads (in isolation from the actual decoder and worker).
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static void perf_pipeline()
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{
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}
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// Testing it all together.
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static void perf_all()
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{
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}
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// Performance regression tests.
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int main()
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{
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create_samples();
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perf_decoder();
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perf_worker();
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perf_pipeline();
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perf_all();
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return 0;
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}
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