1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /*************************************************************************** 3 * drumkitloader.h 4 * 5 * Thu Jan 17 20:54:13 CET 2013 6 * Copyright 2013 Bent Bisballe Nyeng 7 * deva@aasimon.org 8 ****************************************************************************/ 9 10 /* 11 * This file is part of DrumGizmo. 12 * 13 * DrumGizmo is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU Lesser General Public License as published by 15 * the Free Software Foundation; either version 3 of the License, or 16 * (at your option) any later version. 17 * 18 * DrumGizmo is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU Lesser General Public License for more details. 22 * 23 * You should have received a copy of the GNU Lesser General Public License 24 * along with DrumGizmo; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 26 */ 27 #pragma once 28 29 #include <string> 30 #include <list> 31 #include <mutex> 32 #include <vector> 33 34 #include "thread.h" 35 #include "sem.h" 36 37 #include "drumkit.h" 38 #include "settings.h" 39 #include "audioinputengine.h" 40 #include "audiocache.h" 41 42 struct DrumkitDOM; 43 struct InstrumentDOM; 44 45 //! This class is responsible for loading the drumkits in its own thread. 46 //! All interaction calls are simply modifying queues and not doing any 47 //! work in-sync with the caller. 48 //! This means that if loadKit(...) is called, one cannot assume that the 49 //! drumkit has actually been loaded when the call returns. 50 class DrumKitLoader 51 : public Thread 52 { 53 public: 54 DrumKitLoader(Settings& settings, DrumKit& kit, AudioInputEngine& ie, 55 Random& rand, AudioCache& audio_cache); 56 57 ~DrumKitLoader(); 58 59 //! Starts the loader thread. 60 void init(); 61 62 //! Signal the loader thread to stop and waits for the threads to merge 63 //! before returning. 64 void deinit(); 65 66 bool loadkit(const std::string& file); 67 68 //! Signal the loader to start loading all audio files contained in the kit. 69 //! All other AudioFiles in queue will be removed before the new ones are 70 //! scheduled. 71 void loadKitAudio(const DrumKit& kit); 72 73 //! Skip all queued AudioFiles. 74 void skip(); 75 76 //! Set the framesize which will be used to preloading samples in next 77 //! loadKit call. 78 void setFrameSize(std::size_t framesize); 79 80 protected: 81 void thread_main(); 82 83 Semaphore run_semaphore; 84 Semaphore semaphore; 85 Semaphore framesize_semaphore; 86 std::mutex mutex; 87 volatile bool running{false}; 88 std::list<AudioFile*> load_queue; 89 std::size_t framesize{0}; 90 Settings& settings; 91 SettingsGetter getter; 92 DrumKit& kit; 93 AudioInputEngine& ie; 94 //MemChecker memchecker; 95 Random& rand; 96 AudioCache& audio_cache; 97 std::size_t preload_samples{std::numeric_limits<std::size_t>::max()}; 98 99 LogFunction logger; 100 }; 101