Added wxYieldIfNeeded

[wxWidgets.git] / src / mac / wave.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        wave.cpp
// Purpose:     wxWave class implementation: optional
// Author:      AUTHOR
// Modified by:
// Created:     ??/??/98
// RCS-ID:      $Id$
// Copyright:   (c) AUTHOR
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "wave.h"
#endif

#include "wx/object.h"
#include "wx/string.h"
#include "wx/wave.h"

wxWave::wxWave()
  : m_sndChan(0), m_hSnd(NULL), m_waveLength(0), m_isResource(true)
{
}

wxWave::wxWave(const wxString& sFileName, bool isResource)
  : m_sndChan(0), m_hSnd(NULL), m_waveLength(0), m_isResource(true)
{
    Create(sFileName, isResource);
}


wxWave::~wxWave()
{
    Free();
}


bool wxWave::Create(const wxString& fileName, bool isResource)
{
	bool ret = false;
	m_sndname = fileName;
	m_isResource = isResource;

	if (m_isResource)
		ret = true;
	else
	{ /*
		if (sndChan) 
		{																	// we're playing
			FSClose(SndRefNum);
			SndRefNum = 0;
			SndDisposeChannel(sndChan, TRUE);
			free(sndChan);
			sndChan = 0;
			KillTimer(0,timerID);
		}
		
		if (!lpSnd)
			return true;

		if (_access(lpSnd,0))							// no file, no service
			return false;

		// Allocate SndChannel
		sndChan = (SndChannelPtr) malloc (sizeof(SndChannel));

		if (!sndChan)
			return false;

		sndChan->qLength = 128;

		if (noErr != SndNewChannel (&sndChan, sampledSynth, initMono | initNoInterp, 0)) 
		{
			free(sndChan);
			sndChan = 0;
			return false;
		}

		if (!(SndRefNum = MacOpenSndFile ((char *)lpSnd))) 
		{
			SndDisposeChannel(sndChan, TRUE);
			free(sndChan);
			sndChan = 0;

			return false;
		}

		bool async = false;

		if (fdwSound & SND_ASYNC)
			async = true;

		if (SndStartFilePlay(sndChan, SndRefNum, 0, 81920, 0, 0, 0, async) != noErr) 
		{
			FSClose (SndRefNum);
			SndRefNum = 0;
			SndDisposeChannel (sndChan, TRUE);
			free (sndChan);
			sndChan = 0;
			return false;
		}

		if (async) 
		{  // haven't finish yet
			timerID = SetTimer(0, 0, 250, TimerCallBack);
		} 
		else 
		{
			FSClose (SndRefNum);
			SndRefNum = 0;
			SndDisposeChannel (sndChan, TRUE);
			free (sndChan);
			sndChan = 0;
		}*/
	}
	
	return ret;
}


//don't know what to do with looped, wth
bool wxWave::Play(bool async, bool looped) const
{
	char lpSnd[32];
	bool ret = false;
	
	if (m_isResource) 
	{
		strcpy(lpSnd, m_sndname); 
		c2pstr((char *) lpSnd);
		SndListHandle hSnd;
		
		hSnd = (SndListHandle) GetNamedResource('snd ',(const unsigned char *) lpSnd);

		if ((hSnd != NULL) && (SndPlay(m_sndChan, hSnd, async) == noErr))
			ret = true;
	} 
	
	return ret;
}


bool wxWave::Free()
{
	bool ret = false;
	
	if (m_isResource)
	{
		m_sndname.Empty();
		ret = true;
	}
	else
	{
		//TODO, 
	}
	
	return ret;
}


//code below is from an old implementation used for telinfo with MSVC crossplatform support
//technology proceeds, so it would be the wisest to drop this code, but it's left here just
//for the sake of a reference. BTW: Wave files can now be played with QT, starting from V3

/*static short MacOpenSndFile (char * path)
{
	VolumeParam vp;
	FSSpec fspec;
	Str255 name;
	char *c;

	// first, get the volume reference number for the file.  Start by
	// making a Pstring with just the volume name
	strcpy ((char *) name, path);
	if (c = strchr ((char *) name, ':')) 
	{
		c++;
		*c = '\0';
	}

	c2pstr ((char *) name);
	vp.ioCompletion = 0;
	vp.ioVolIndex	= -1;
	vp.ioNamePtr	= name;
	vp.ioVRefNum	= 0;

	if (PBGetVInfo((ParamBlockRec *)&vp, 0) != noErr)
		return 0;

	// next, buld an FSSpec for the file
	strcpy ((char *) name, path);
	c2pstr ((char *) name);
	if (FSMakeFSSpec (vp.ioVRefNum, 0, name, &fspec) != noErr)
		return 0;

	short frefnum;
	// now open the file, and return it's reference number
	if (FSpOpenDF(&fspec, fsRdPerm, &frefnum) != noErr)
		return 0;

	return frefnum;
}


void TimerCallBack(HWND hwnd,UINT uMsg,UINT idEvent,DWORD dwTime)
{
	if(!sndChan) 
	{
		KillTimer(0,timerID);
		return;
	}

	SCStatus	scstat;

	if (noErr == SndChannelStatus (sndChan, sizeof (SCStatus), &scstat)) {
		if (scstat.scChannelPaused || scstat.scChannelBusy)
			return;							// not done yet
	}

	// either error or done.
	FSClose (SndRefNum);
	SndRefNum = 0;
	SndDisposeChannel (sndChan, TRUE);
	free (sndChan);
	sndChan = 0;
	KillTimer(0,timerID);
}*/