axmol/CocosDenshion/marmalade/SimpleAudioEngine.cpp

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org
Copyright (c) 2011 Giovanni Zito

http://www.cocos2d-x.org

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****************************************************************************/

#include "SimpleAudioEngine.h"
#include "s3e.h"
#include "IwUtil.h"

#include <string>
#include <map>

using namespace std ;

#define	GEOM_ONE_FP8		0x100		// volume is in .8 fixed point format

namespace CocosDenshion
{
	class SoundFx {
	public:
		SoundFx() : data(0), size(0) {}
		SoundFx(void* pData, int32 nSize) : data((int16*)pData), size(nSize) {}

		int16*	data ;
		int32	size ;
	};

	static int16*		g_AudioBuffer = 0;
	static int32		g_AudioFileSize = 0;

	typedef map<string,SoundFx> SoundFxMap ;
	static SoundFxMap* g_pSoundFxMap = 0 ;
	
	static SimpleAudioEngine *s_pEngine = 0 ;

	SimpleAudioEngine::SimpleAudioEngine()
	{
		g_pSoundFxMap = new SoundFxMap() ;
	}

	SimpleAudioEngine::~SimpleAudioEngine()
	{
	}

	SimpleAudioEngine* SimpleAudioEngine::sharedEngine()
	{
		if (! s_pEngine) {
			s_pEngine = new SimpleAudioEngine();
		}
        
		return s_pEngine;
	}

	void SimpleAudioEngine::end()
	{
		s3eAudioStop();

		if( g_AudioBuffer) {
			free(g_AudioBuffer);
			g_AudioBuffer = 0 ;
		}

		if(s_pEngine) {
			s_pEngine->stopAllEffects() ;
			delete s_pEngine;
			s_pEngine=0;
		} 

		for( SoundFxMap::iterator it = g_pSoundFxMap->begin(); it!=g_pSoundFxMap->end(); it++ ) {
			if( it->second.data != 0 ) free( it->second.data ) ;
		}
		if( g_pSoundFxMap ) {
			delete g_pSoundFxMap ;
			g_pSoundFxMap = 0 ;
		}
	}

/*	void SimpleAudioEngine::setResource(const char* pszZipFileName)
	{
		// todo
	}
*/

    void SimpleAudioEngine::preloadBackgroundMusic(const char* pszFilePath)
	{
		s3eFile *fileHandle = s3eFileOpen(pszFilePath, "rb");
		
		IwAssertMsg(GAME, fileHandle, ("Open file %s Failed. s3eFileError Code : %i", pszFilePath, s3eFileGetError()));
		
		g_AudioFileSize = s3eFileGetSize(fileHandle);
		g_AudioBuffer = (int16*)malloc(g_AudioFileSize);
		memset(g_AudioBuffer, 0, g_AudioFileSize);
		s3eFileRead(g_AudioBuffer, g_AudioFileSize, 1, fileHandle);
		s3eFileClose(fileHandle);
	}

	void SimpleAudioEngine::playBackgroundMusic(const char* pszFilePath, bool bLoop)
	{
		s3eResult result;
		
		result = s3eAudioPlayFromBuffer(g_AudioBuffer, g_AudioFileSize, bLoop ? 0 : 1);
		
		if ( result == S3E_RESULT_ERROR)
		{
			result = s3eAudioPlay(pszFilePath, bLoop ? 0 : 1);
		}
		
		if ( result == S3E_RESULT_ERROR) 
		{
			IwAssert(GAME, ("Play music %s Failed. Error Code : %s", pszFilePath, s3eAudioGetErrorString()));
		}
	}

	void SimpleAudioEngine::stopBackgroundMusic(bool bReleaseData)
	{
		s3eAudioStop();
		
		if (bReleaseData)
		{
			free(g_AudioBuffer);
		}

	}

	void SimpleAudioEngine::pauseBackgroundMusic()
	{
		s3eAudioPause();
	}

	void SimpleAudioEngine::resumeBackgroundMusic()
	{
		s3eAudioResume();
	} 

	void SimpleAudioEngine::rewindBackgroundMusic()
	{
		//todo
	}

	bool SimpleAudioEngine::willPlayBackgroundMusic()
	{
		// todo
		return true;
	}

	bool SimpleAudioEngine::isBackgroundMusicPlaying()
	{
		return s3eAudioIsPlaying() == S3E_TRUE ;
	}

	float SimpleAudioEngine::getBackgroundMusicVolume()
	{

		return s3eAudioGetInt(S3E_AUDIO_VOLUME) / (float)GEOM_ONE_FP8;
	}

	void SimpleAudioEngine::setBackgroundMusicVolume(float volume)
	{
		s3eAudioSetInt(S3E_AUDIO_VOLUME, (int32)(volume * (float)GEOM_ONE_FP8));
	}

	float SimpleAudioEngine::getEffectsVolume()
	{
		return s3eSoundGetInt(S3E_SOUND_VOLUME) / (float)GEOM_ONE_FP8;
	}

	void SimpleAudioEngine::setEffectsVolume(float volume)
	{		
		s3eSoundSetInt(S3E_SOUND_VOLUME, (int32)(volume * (float)GEOM_ONE_FP8));
	}

	unsigned int SimpleAudioEngine::playEffect(const char* pszFilePath, bool bLoop)
	{
		SoundFxMap::iterator it = g_pSoundFxMap->find(pszFilePath) ;
		
		int16* buff = 0 ;
		if( it==g_pSoundFxMap->end() ) {
			preloadEffect(pszFilePath) ;
		}
		buff = (*g_pSoundFxMap)[pszFilePath].data ;

		int channel = s3eSoundGetFreeChannel();
		
		s3eSoundChannelPlay(channel, buff, (*g_pSoundFxMap)[pszFilePath].size/2, (bLoop ? 0 : 1), 0);
		
		if (s3eSoundGetError()!= S3E_SOUND_ERR_NONE) {
			IwAssertMsg(GAME, false, ("Play sound %s Failed. Error Code : %s", pszFilePath, s3eSoundGetErrorString()));	
		}

		return channel;

	}

	void SimpleAudioEngine::stopEffect(unsigned int nSoundId)
	{
		s3eSoundChannelStop(nSoundId);
	}

	void SimpleAudioEngine::preloadEffect(const char* pszFilePath)
	{
		SoundFxMap::iterator it = g_pSoundFxMap->find(pszFilePath) ;
		if( it==g_pSoundFxMap->end() ) {
			s3eFile *fileHandle = s3eFileOpen(pszFilePath, "rb");
		
			IwAssertMsg(GAME, fileHandle, ("Open file %s Failed. s3eFileError Code : %i", pszFilePath, s3eFileGetError()));
		
			int32 fileSize = s3eFileGetSize(fileHandle);
			int16* buff = (int16*)malloc(fileSize);

			(*g_pSoundFxMap)[pszFilePath] = SoundFx(buff,fileSize) ;
			memset(buff, 0, fileSize);
			s3eFileRead(buff, fileSize, 1, fileHandle);
			s3eFileClose(fileHandle);
		}
	}

	void SimpleAudioEngine::unloadEffect(const char* pszFilePath)
	{
		// effect must not be playing!

		SoundFxMap::iterator it = g_pSoundFxMap->find(pszFilePath) ;
		if( it != g_pSoundFxMap->end() ) {
			free(it->second.data) ;
			g_pSoundFxMap->erase(it) ;
		}
	}

	void SimpleAudioEngine::pauseEffect(unsigned int nSoundId)
	{
		s3eSoundChannelPause(nSoundId);
	}

	void SimpleAudioEngine::pauseAllEffects()
	{
		s3eSoundPauseAllChannels();
	}

	void SimpleAudioEngine::resumeEffect(unsigned int nSoundId)
	{
		s3eSoundChannelResume(nSoundId);
	}

	void SimpleAudioEngine::resumeAllEffects()
	{
		s3eSoundResumeAllChannels();
	}

	void SimpleAudioEngine::stopAllEffects()
	{
		s3eSoundStopAllChannels();
	}
}