c45acda473
window already (#25). Also avoid using alloca for substantial buffers * Lose FFT::getFloatTimeBuffer and getDoubleTimeBuffer -- it's too unclear when it's safe to use them and it's safer to control sizes externally. In RB with smoothing on, these buffers were incorrectly being used for window-si zed calculations (larger than FFT-sized). * Fix some incorrect buffer resize sizes * Build fixes for OS/X
147 lines
2.7 KiB
C++
147 lines
2.7 KiB
C++
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rubber Band
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An audio time-stretching and pitch-shifting library.
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Copyright 2007-2011 Chris Cannam.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _RUBBERBAND_THREAD_H_
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#define _RUBBERBAND_THREAD_H_
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#ifdef _WIN32
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#include <windows.h>
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#else /* !_WIN32 */
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#include <pthread.h>
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#endif /* !_WIN32 */
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#include <string>
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//#define DEBUG_THREAD 1
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//#define DEBUG_MUTEX 1
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//#define DEBUG_CONDITION 1
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namespace RubberBand
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{
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class Thread
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{
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public:
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#ifdef _WIN32
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typedef HANDLE Id;
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#else
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typedef pthread_t Id;
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#endif
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Thread();
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virtual ~Thread();
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Id id();
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void start();
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void wait();
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static bool threadingAvailable();
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protected:
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virtual void run() = 0;
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private:
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#ifdef _WIN32
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HANDLE m_id;
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bool m_extant;
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static DWORD WINAPI staticRun(LPVOID lpParam);
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#else
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pthread_t m_id;
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bool m_extant;
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static void *staticRun(void *);
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#endif
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};
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class Mutex
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{
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public:
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Mutex();
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~Mutex();
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void lock();
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void unlock();
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bool trylock();
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private:
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#ifdef _WIN32
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HANDLE m_mutex;
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#ifndef NO_THREAD_CHECKS
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DWORD m_lockedBy;
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#endif
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#else
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pthread_mutex_t m_mutex;
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#ifndef NO_THREAD_CHECKS
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pthread_t m_lockedBy;
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bool m_locked;
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#endif
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#endif
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};
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class MutexLocker
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{
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public:
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MutexLocker(Mutex *);
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~MutexLocker();
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private:
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Mutex *m_mutex;
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};
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/**
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The Condition class bundles a condition variable and mutex.
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To wait on a condition, call lock(), test the termination condition
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if desired, then wait(). The condition will be unlocked during the
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wait and re-locked when wait() returns (which will happen when the
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condition is signalled or the timer times out).
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To signal a condition, call signal(). If the condition is signalled
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between lock() and wait(), the signal may be missed by the waiting
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thread. To avoid this, the signalling thread should also lock the
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condition before calling signal() and unlock it afterwards.
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*/
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class Condition
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{
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public:
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Condition(std::string name);
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~Condition();
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void lock();
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void unlock();
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void wait(int us = 0);
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void signal();
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private:
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#ifdef _WIN32
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HANDLE m_mutex;
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HANDLE m_condition;
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bool m_locked;
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#else
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pthread_mutex_t m_mutex;
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pthread_cond_t m_condition;
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bool m_locked;
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#endif
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#ifdef DEBUG_CONDITION
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std::string m_name;
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#endif
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};
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}
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#endif
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