annotate system/System.h @ 299:576be0d0d218

* Merge transform directory from sv-match-alignment branch
  (the previous comment included notes for this stuff, but I missed it
  in the actual merge)
* Fix crash when a transform fails to create an output model and the
  thread that created the transform then deletes its input model thinking
  it's no longer needed, even though the transform run thread is still
  using it -- fix is to wait() on the transform before returning the
  null output model

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam and QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _SYSTEM_H_
#define _SYSTEM_H_

#ifdef _WIN32

#include <windows.h>
#include <malloc.h>
#include <process.h>

#define MLOCK(a,b)   1
#define MUNLOCK(a,b) 1
#define MUNLOCK_SAMPLEBLOCK(a) 1

#define DLOPEN(a,b)  LoadLibrary((a).toStdWString().c_str())
#define DLSYM(a,b)   GetProcAddress((HINSTANCE)(a),(b))
#define DLCLOSE(a)   (!FreeLibrary((HINSTANCE)(a)))
#define DLERROR()    ""

#define PLUGIN_GLOB  "*.dll"
#define PATH_SEPARATOR ';'

// The default Vamp plugin path is obtained from a function in the
// Vamp SDK (Vamp::PluginHostAdapter::getPluginPath).

// At the time of writing, at least, the vast majority of LADSPA
// plugins on Windows hosts will have been put there for use in
// Audacity.  It's a bit of a shame that Audacity uses its own Program
// Files directory for plugins that any host may want to use... maybe
// they were just following the example of VSTs, which are usually
// found in Steinberg's Program Files directory.  Anyway, we can
// greatly increase our chances of picking up some LADSPA plugins by
// default if we include the Audacity plugin location as well as an
// (imho) more sensible place.

#define DEFAULT_LADSPA_PATH "%ProgramFiles%\\LADSPA Plugins;%ProgramFiles%\\Audacity\\Plug-Ins"
#define DEFAULT_DSSI_PATH   "%ProgramFiles%\\DSSI Plugins"

#define getpid _getpid

extern "C" {
void usleep(unsigned long usec);
void gettimeofday(struct timeval *p, void *tz);
}

#else

#include <sys/mman.h>
#include <dlfcn.h>

#define MLOCK(a,b)   ::mlock((a),(b))
#define MUNLOCK(a,b) (::munlock((a),(b)) ? (::perror("munlock failed"), 0) : 0)
#define MUNLOCK_SAMPLEBLOCK(a) do { if (!(a).empty()) { const float &b = *(a).begin(); MUNLOCK(&b, (a).capacity() * sizeof(float)); } } while(0);
//#define MLOCK(a,b)   1
//#define MUNLOCK(a,b) 1
//#define MUNLOCK_SAMPLEBLOCK(a) 1

#define DLOPEN(a,b)  dlopen((a).toStdString().c_str(),(b))
#define DLSYM(a,b)   dlsym((a),(b))
#define DLCLOSE(a)   dlclose((a))
#define DLERROR()    dlerror()

#ifdef __APPLE__

#define PLUGIN_GLOB  "*.dylib *.so"
#define PATH_SEPARATOR ':'

#define DEFAULT_LADSPA_PATH "$HOME/Library/Audio/Plug-Ins/LADSPA:/Library/Audio/Plug-Ins/LADSPA"
#define DEFAULT_DSSI_PATH   "$HOME/Library/Audio/Plug-Ins/DSSI:/Library/Audio/Plug-Ins/DSSI"

#else 

#define PLUGIN_GLOB  "*.so"
#define PATH_SEPARATOR ':'

#define DEFAULT_LADSPA_PATH "$HOME/ladspa:$HOME/.ladspa:/usr/local/lib/ladspa:/usr/lib/ladspa"
#define DEFAULT_DSSI_PATH "$HOME/dssi:$HOME/.dssi:/usr/local/lib/dssi:/usr/lib/dssi"

#endif /* __APPLE__ */

#endif /* ! _WIN32 */

enum ProcessStatus { ProcessRunning, ProcessNotRunning, UnknownProcessStatus };
extern ProcessStatus GetProcessStatus(int pid);

// Return a vague approximation to the number of free megabytes of real memory.
// Return -1 if unknown.
extern void GetRealMemoryMBAvailable(int &available, int &total);

// Return a vague approximation to the number of free megabytes of disc space
// on the partition containing the given path.  Return -1 if unknown.
extern int GetDiscSpaceMBAvailable(const char *path);

#include <cmath>

extern double mod(double x, double y);
extern float modf(float x, float y);

extern double princarg(double a);
extern float princargf(float a);

#endif /* ! _SYSTEM_H_ */