C++ System::createStream方法代码示例

void AudioVisualizerApp::playAudio( const fs::path& file )
{
	FMOD_RESULT err;

	// ignore if this is not a file
	if( file.empty() || !fs::is_regular_file( file ) )
		return;

	// if audio is already playing, stop it first
	stopAudio();

	// stream the audio
	err = mFMODSystem->createStream( file.string().c_str(), FMOD_SOFTWARE, NULL, &mFMODSound );
	err = mFMODSystem->playSound( FMOD_CHANNEL_FREE, mFMODSound, false, &mFMODChannel );

	// we want to be notified of channel events
	err = mFMODChannel->setCallback( channelCallback );

	// keep track of the audio file
	mAudioPath = file;
	mIsAudioPlaying = true;

	// 
	console() << "Now playing:" << mAudioPath.filename() << std::endl;
}

	void FMOD_System::CreateSounds( const SoundFilenameMap& soundFilenames )
	{
		auto isPresent = [=]( const std::string& key ) -> bool
		{
			return ( soundFilenames.find( key ) != soundFilenames.end() ) ? true : false;
		};

		if( isPresent( "bgmusic" ) )
		{
			ErrorCheck( system->createStream( soundFilenames.at("bgmusic").c_str(), FMOD_LOOP_NORMAL | FMOD_CREATESTREAM,
				nullptr, &bgmusic ) );
			bgmusic->setDefaults( 44100, 0.025f, 0.f, 128 );
		}
		if( isPresent( "jet" ) )
		{
			ErrorCheck( system->createSound( soundFilenames.at( "jet" ).c_str(), FMOD_3D, nullptr, &jet ) );
			jet->setDefaults( 44100, 0.75f, 0.f, 128 );
		}
		if( isPresent( "vent" ) )
		{
			ErrorCheck( system->createSound( soundFilenames.at( "vent" ).c_str(), FMOD_3D | FMOD_LOOP_NORMAL,
				nullptr, &ventSound ) );
			ventSound->setDefaults( 44100, 0.3f, 0.f, 128 );
		}
		if( isPresent( "collision" ) )
		{
			ErrorCheck( system->createSound( soundFilenames.at( "collision" ).c_str(), FMOD_3D, nullptr, &collision ) );
			collision->setDefaults( 44100, 5.f, 0.f, 128 );
		}
		if( isPresent( "roll" ) )
		{
			ErrorCheck( system->createSound( soundFilenames.at( "roll" ).c_str(), FMOD_3D, nullptr, &roll ) );
			roll->setDefaults( 44100, 2.f, 0.f, 128 );
		}
	}

void cinderFFmpegApp::setup()
{
	m_Font = ci::Font("Consolas", 48);
	setupGui();
	gl::enableAlphaBlending();

	std::shared_ptr<_2RealFFmpegWrapper::FFmpegWrapper> testFile = std::shared_ptr<_2RealFFmpegWrapper::FFmpegWrapper>(new _2RealFFmpegWrapper::FFmpegWrapper());
	testFile->dumpFFmpegInfo();
	//if(testFile->open(".\\data\\morph.avi"))
	if(testFile->open("d:\\vjing\\Wildlife.wmv"))
	{
		m_Players.push_back(testFile);
		m_VideoTextures.push_back(gl::Texture());
		m_Players.back()->play();
	}

	m_dLastTime = 0;
	m_iCurrentVideo = 0;
	m_fSpeed = 1;
	m_iLoopMode = _2RealFFmpegWrapper::eLoop;
	m_iTilesDivisor = 1;
	m_fSeekPos = m_fOldSeekPos = 0;

	//setup fmod
	FMOD::System_Create(&m_pSystem);
    m_pSystem->init(32, FMOD_INIT_NORMAL, 0);
   
	memset(&createsoundexinfo, 0, sizeof(FMOD_CREATESOUNDEXINFO));
    createsoundexinfo.cbsize            = sizeof(FMOD_CREATESOUNDEXINFO);              /* required. */
    createsoundexinfo.decodebuffersize  = 1024;                                       /* Chunk size of stream update in samples.  This will be the amount of data passed to the user callback. */
    createsoundexinfo.numchannels       = 2;                        /* Number of channels in the sound. */
    createsoundexinfo.length            = -1;                     /* Length of PCM data in bytes of whole song.  -1 = infinite. */
    createsoundexinfo.defaultfrequency  = (int)44100;                       /* Default playback rate of sound. */
	createsoundexinfo.format            = FMOD_SOUND_FORMAT_PCM16;                    /* Data format of sound. */
	createsoundexinfo.pcmreadcallback   =  pcmreadcallback;                             /* User callback for reading. */

	result = m_pSystem->createStream(0, FMOD_2D | FMOD_OPENUSER | FMOD_LOOP_OFF, &createsoundexinfo, &m_pSound);
	result = m_pSystem->playSound(FMOD_CHANNEL_FREE, m_pSound, 0, &m_pChannel);

	//std::shared_ptr<audio::Callback<cinderFFmpegApp,unsigned short>> audioCallback = audio::createCallback( this, &cinderFFmpegApp::audioCallback );
	//audio::Output::play( audioCallback );
}

int main(int argc, char *argv[])
{
    FMOD::System     *system;
    FMOD::Sound      *sound;
    FMOD::Channel    *channel = 0;
    FMOD_RESULT       result;
    int               key;
    unsigned int      version;
    HANDLE            threadhandle;

    InitializeCriticalSection(&gCrit);
    
	threadhandle = (HANDLE)_beginthreadex(NULL, 0, ProcessQueue, 0, 0, 0);
    if (!threadhandle)
    {
        printf("Failed to create file thread.\n");
        return 0;
    }
    
    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(1, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    result = system->setStreamBufferSize(32768, FMOD_TIMEUNIT_RAWBYTES);
    ERRCHECK(result);
    
    result = system->setFileSystem(myopen, myclose, myread, myseek, myasyncread, myasynccancel, 2048);
    ERRCHECK(result);

    printf("====================================================================\n");
    printf("Stream IO Example.  Copyright (c) Firelight Technologies 2004-2014.\n");
    printf("====================================================================\n");
    printf("\n");
    printf("\n");
    printf("====================== CALLING CREATESOUND ON MP3 =======================\n");
    
    result = system->createStream("../media/wave.mp3", FMOD_SOFTWARE | FMOD_LOOP_NORMAL | FMOD_2D | FMOD_IGNORETAGS, 0, &sound);
    ERRCHECK(result);

    printf("====================== CALLING PLAYSOUND ON MP3 =======================\n");

    result = system->playSound(FMOD_CHANNEL_FREE, sound, false, &channel);
    ERRCHECK(result);

    /*
        Main loop.
    */
    do
    {
        if (sound)
        {
            FMOD_OPENSTATE openstate;
            bool starving;

            sound->getOpenState(&openstate, 0, &starving, 0);
            
            if (starving)
            {
                printf("Starving\n");
                result = channel->setMute(true);
            }
            else
            {
                result = channel->setMute(false);
                ERRCHECK(result);
            }
        }

       
        if (_kbhit())
        {
            key = _getch();

            switch (key)
            {
                case ' ' :
                {
                    result = sound->release();
                    if (result == FMOD_OK)
                    {
                        sound = 0;
                        printf("Released sound.\n");
                    }
                    break;
                }
            }
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    FMOD::System     *system;
    FMOD::Sound      *sound;
    FMOD_RESULT       result;
    unsigned int      version;

    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(1, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    result = system->createStream("../media/wave.mp3", FMOD_OPENONLY | FMOD_ACCURATETIME, 0, &sound);
    ERRCHECK(result);

    printf("==========================================================================\n");
    printf("Offline Decoding Example.  Copyright (c) Firelight Technologies 2004-2011.\n");
    printf("==========================================================================\n");
    printf("\n");
    printf("This program will open wave.mp3 and decode it into wave.raw using the\n");
    printf("Sound::readData function.\n");
    printf("\n");

    /*
        Decode the sound and write it to a .raw file.
    */
    {
        void *data;
        unsigned int length = 0, read;
        unsigned int bytesread;
        FILE *outfp;

        #define CHUNKSIZE 4096

        result = sound->getLength(&length, FMOD_TIMEUNIT_PCMBYTES);
        ERRCHECK(result);

        outfp = fopen("output.raw", "wb");
        if (!outfp)
        {
            printf("Error!  Could not open output.raw output file.\n");
            return 0;
        }

        data = malloc(CHUNKSIZE);
        if (!data)
        {
            printf("Error!  Failed to allocate %d bytes.\n", CHUNKSIZE);
            return 0;
        }

        bytesread = 0;
        do
        {
            result = sound->readData((char *)data, CHUNKSIZE, &read);

            fwrite((char *)data, read, 1, outfp);
                       
            bytesread += read;

            printf("writing %d bytes of %d to output.raw\r", bytesread, length);
        }
        while (result == FMOD_OK && read == CHUNKSIZE);

        /*
            Loop terminates when either 
            1. the read function returns an error.  (ie FMOD_ERR_FILE_EOF etc).
            2. the amount requested was different to the amount returned. (somehow got an EOF without the file error, maybe a non stream file format like mod/s3m/xm/it/midi).

            If 'bytesread' is bigger than 'length' then it just means that FMOD miscalculated the size, 
            but this will not usually happen if FMOD_ACCURATETIME is used.  (this will give the correct length for VBR formats)
        */

        printf("\n");

        if (outfp)
        {
            fclose(outfp);
        }
    }
        

    printf("\n");

    /*
        Shut down
    */
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    FMOD::System     *system;
    FMOD::Sound      *sound;
    FMOD::Channel    *channel = 0;
    FMOD_RESULT       result;
    int               key;
    unsigned int      version;

    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(1, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    result = system->setFileSystem(myopen, myclose, myread, myseek, 0, 0, 2048);
    ERRCHECK(result);

    result = system->createStream("../media/wave.mp3", FMOD_HARDWARE | FMOD_LOOP_NORMAL | FMOD_2D, 0, &sound);
    ERRCHECK(result);

    printf("========================================================================\n");
    printf("File Callbacks Example.  Copyright (c) Firelight Technologies 2004-2015.\n");
    printf("========================================================================\n");
    printf("\n");
    printf("Press space to pause, Esc to quit\n");
    printf("\n");

    /*
        Play the sound.
    */

    result = system->playSound(FMOD_CHANNEL_FREE, sound, false, &channel);
    ERRCHECK(result);

    /*
        Main loop.
    */
    do
    {
        if (kbhit())
        {
            key = getch();

            switch (key)
            {
                case ' ' :
                {
                    bool paused;
                    channel->getPaused(&paused);
                    channel->setPaused(!paused);
                    break;
                }
            }
        }

        system->update();

        if (channel)
        {
            unsigned int ms;
            unsigned int lenms;
            bool         playing;
            bool         paused;

            channel->isPlaying(&playing);
            if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
            {
                ERRCHECK(result);
            }

            result = channel->getPaused(&paused);
            if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
            {
                ERRCHECK(result);
            }

            result = channel->getPosition(&ms, FMOD_TIMEUNIT_MS);
            if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
            {
                ERRCHECK(result);
            }

            result = sound->getLength(&lenms, FMOD_TIMEUNIT_MS);
            if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
            {
                ERRCHECK(result);
            }
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    FMOD::System           *system;
    FMOD::Sound            *sound;
    FMOD::Channel          *channel = 0;
    FMOD_RESULT             result;
    int                     key;
    FMOD_CREATESOUNDEXINFO  createsoundexinfo;
    unsigned int            version, decodesound_lengthbytes = 0;
    int                     decodesound_channels;
    float                   decodesound_rate;

    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(32, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    InitializeCriticalSection(&decodecrit);

    /*
        First create the 'decoder sound'.  Note it is a stream that does not initially read any data, because FMOD_OPENONLY has been specified.
        We could use createSound instead of createStream but that would allocate memory for the whole sound which is a waste.
    */
    result = system->createStream("../media/wave.mp3", FMOD_OPENONLY | FMOD_LOOP_NORMAL | FMOD_LOWMEM | FMOD_CREATESTREAM, 0, &decodesound); 
    ERRCHECK(result);

    result = decodesound->getLength(&decodesound_lengthbytes, FMOD_TIMEUNIT_PCMBYTES);
    ERRCHECK(result);

    result = decodesound->getFormat(0, 0, &decodesound_channels, 0);
    ERRCHECK(result);

    result = decodesound->getDefaults(&decodesound_rate, 0, 0, 0);
    ERRCHECK(result);
        
    /*
        Now create a user created PCM stream that we will feed data into, and play.
    */
    memset(&createsoundexinfo, 0, sizeof(FMOD_CREATESOUNDEXINFO));
    createsoundexinfo.cbsize            = sizeof(FMOD_CREATESOUNDEXINFO);              /* required. */
    createsoundexinfo.decodebuffersize  = 44100;                                       /* Chunk size of stream update in samples.  This will be the amount of data passed to the user callback. */
    createsoundexinfo.numchannels       = decodesound_channels;                        /* Number of channels in the sound. */
    createsoundexinfo.length            = decodesound_lengthbytes;                     /* Length of PCM data in bytes of whole song.  -1 = infinite. */
    createsoundexinfo.defaultfrequency  = (int)decodesound_rate;                       /* Default playback rate of sound. */
    createsoundexinfo.format            = FMOD_SOUND_FORMAT_PCM16;                     /* Data format of sound. */
    createsoundexinfo.pcmreadcallback   = pcmreadcallback;                             /* User callback for reading. */
    createsoundexinfo.pcmsetposcallback = pcmsetposcallback;                           /* User callback for seeking. */

    result = system->createStream(0, FMOD_2D | FMOD_OPENUSER | FMOD_LOOP_NORMAL, &createsoundexinfo, &sound);
    ERRCHECK(result);

    printf("============================================================================\n");
    printf("Manual Decode example.  Copyright (c) Firelight Technologies 2004-2014.\n");
    printf("============================================================================\n");
    printf("Sound played here decoded in realtime by the user with a 'decoder sound'    \n");
    printf("The mp3 is created as a stream opened with FMOD_OPENONLY. This is the       \n");
    printf("'decoder sound'.  The playback sound is a 16bit PCM FMOD_OPENUSER created   \n");
    printf("sound with a pcm read callback.  When the callback happens, we call readData\n");
    printf("on the decoder sound and use the pcmreadcallback data pointer as the parameter.\n");
    printf("============================================================================\n");
    printf("\n");
    printf("Press space to pause, Esc to quit\n");
    printf("Press '<' to rewind 1 second.\n");
    printf("Press '>' to fast forward 1 second.\n");
    printf("\n");

    /*
        Play the sound.
    */

    result = system->playSound(FMOD_CHANNEL_FREE, sound, 0, &channel);
    ERRCHECK(result);

    /*
        Main loop.
    */
    do
    {
        if (_kbhit())
        {
            key = _getch();

            switch (key)
            {
                case ' ' :
                {
                    bool paused;
//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    FMOD::System    *system;
    FMOD::Sound     *cdsound;
    FMOD::Sound     *sound;
    FMOD::Channel   *channel = 0;
    FMOD_RESULT      result;
    int              key, numtracks, currenttrack = 0;
    unsigned int     version;

    if (argc < 2)
    {
        printf("Usage: cdplayer <drivepath>\n");
        printf("Example: cdplayer /dev/cdrom\n");
        exit(-1);
    }

    printf("==================================================================\n");
    printf("CDPlayer Example.  Copyright (c) Firelight Technologies 2004-2011.\n");
    printf("==================================================================\n\n");

    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(1, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    /*
        Bump up the file buffer size a bit from the 16k default for CDDA, because it is a slower medium.
    */
    result = system->setStreamBufferSize(64*1024, FMOD_TIMEUNIT_RAWBYTES);
    ERRCHECK(result);

    result = system->createStream(argv[1], FMOD_OPENONLY, 0, &cdsound);
    ERRCHECK(result);
    result = cdsound->getNumSubSounds(&numtracks);
    ERRCHECK(result);
    result = cdsound->getSubSound(currenttrack, &sound);
    ERRCHECK(result);

    for (;;)
    {
        FMOD_TAG tag;

        if (cdsound->getTag(0, -1, &tag) != FMOD_OK)
        {
            break;
        }
        if (tag.datatype == FMOD_TAGDATATYPE_CDTOC)
        {
            dump_cddb_query((FMOD_CDTOC *)tag.data);
        }
    }

    printf("\n========================================\n");
    printf("Press SPACE to pause\n");
    printf("      n     to skip to next track\n");
    printf("      ESC   to exit\n");
    printf("========================================\n\n");

    /*
        Print out length of entire CD.  Did you know you can also play 'cdsound' and it will play the whole CD without gaps?
    */
    {
        unsigned int lenms;

        result = cdsound->getLength(&lenms, FMOD_TIMEUNIT_MS);
        ERRCHECK(result);

        printf("Total CD length %02d:%02d\n\n", lenms / 1000 / 60, lenms / 1000 % 60, lenms / 10 % 100);
    }


    /*
        Play a CD track
    */
    result = system->playSound(FMOD_CHANNEL_FREE, sound, false, &channel);
    ERRCHECK(result);

    /*
        Main loop
    */
    do
    {
        if (kbhit())
        {
            key = getch();

//.........这里部分代码省略.........

int main(int argc, char *argv[])
{
    FMOD::System    *system;
    FMOD::Sound     *cdsound;
    FMOD::Channel   *channel = 0;
    FMOD_RESULT      result;
    int              key;
    unsigned int     currenttrack = 0, numtracks;
    unsigned int     version;

    printf("==================================================================\n");
    printf("CDPlayer Example.  Copyright (c) Firelight Technologies 2004-2011.\n");
    printf("==================================================================\n\n");

    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        printf("Error!  You are using an old version of FMOD %08x.  This program requires %08x\n", version, FMOD_VERSION);
        return 0;
    }

    result = system->init(1, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    /*
        Bump up the file buffer size a bit from the 16k default for CDDA, because it is a slower medium.
    */
    result = system->setStreamBufferSize(64*1024, FMOD_TIMEUNIT_RAWBYTES);
    ERRCHECK(result);

    /*
        Try a few drive letters.
    */
    result = system->createStream("d:", FMOD_OPENONLY, 0, &cdsound);
    if (result != FMOD_OK)
    {
        result = system->createStream("e:", FMOD_OPENONLY, 0, &cdsound);
        if (result != FMOD_OK)
        {
            result = system->createStream("f:", FMOD_OPENONLY, 0, &cdsound);
            ERRCHECK(result);
        }
    }
    result = cdsound->getNumSubSounds((int *)&numtracks);
    ERRCHECK(result);

    for (;;)
    {
        FMOD_TAG tag;

        if (cdsound->getTag(0, -1, &tag) != FMOD_OK)
        {
            break;
        }
        if (tag.datatype == FMOD_TAGDATATYPE_CDTOC)
        {
            dump_cddb_query((FMOD_CDTOC *)tag.data);
        }
    }

    printf("\n========================================\n");
    printf("Press SPACE to pause\n");
    printf("      n     to skip to next track\n");
    printf("      <     re-wind 10 seconds\n");
    printf("      >     fast-forward 10 seconds\n");
    printf("      ESC   to exit\n");
    printf("========================================\n\n");

    /*
        Print out length of entire CD.  Did you know you can also play 'cdsound' and it will play the whole CD without gaps?
    */
    {
        unsigned int lenms;

        result = cdsound->getLength(&lenms, FMOD_TIMEUNIT_MS);
        ERRCHECK(result);

        printf("Total CD length %02d:%02d\n\n", lenms / 1000 / 60, lenms / 1000 % 60, lenms / 10 % 100);
    }

    /*
        Play whole CD
    */
    result = system->playSound(FMOD_CHANNEL_FREE, cdsound, false, &channel);
    ERRCHECK(result);

    /*
        Main loop
    */
    do
    {
        if (_kbhit())
//.........这里部分代码省略.........

int main()
{
	// ================================================================================================
	// Application-independent initialization
	// ================================================================================================

	FMOD::System *system;
	FMOD_RESULT result;
	unsigned int version;
	int numDrivers;
	FMOD_SPEAKERMODE speakerMode;
	FMOD_CAPS caps;
	char name[256];

	// Create FMOD interface object
	result = FMOD::System_Create(&system);
	FMODErrorCheck(result);

	// Check version
	result = system->getVersion(&version);
	FMODErrorCheck(result);

	if (version < FMOD_VERSION)
	{
		std::cout << "Error! You are using an old version of FMOD " << version << ". This program requires " << FMOD_VERSION << std::endl;
		return 0;
	}
	
	// Get number of sound cards
	result = system->getNumDrivers(&numDrivers);
	FMODErrorCheck(result);
	
	// No sound cards (disable sound)
	if (numDrivers == 0)
	{
		result = system->setOutput(FMOD_OUTPUTTYPE_NOSOUND);
		FMODErrorCheck(result);
	}

	// At least one sound card
	else
	{
		// Get the capabilities of the default (0) sound card
		result = system->getDriverCaps(0, &caps, 0, &speakerMode);
		FMODErrorCheck(result);
	
		// Set the speaker mode to match that in Control Panel
		result = system->setSpeakerMode(speakerMode);
		FMODErrorCheck(result);
	
		// Increase buffer size if user has Acceleration slider set to off
		if (caps & FMOD_CAPS_HARDWARE_EMULATED)
		{
			result = system->setDSPBufferSize(1024, 10);
			FMODErrorCheck(result);
		}
	
		// Get name of driver
		result = system->getDriverInfo(0, name, 256, 0);
		FMODErrorCheck(result);
	
		// SigmaTel sound devices crackle for some reason if the format is PCM 16-bit.
		// PCM floating point output seems to solve it.
		if (strstr(name, "SigmaTel"))
		{
			result = system->setSoftwareFormat(48000, FMOD_SOUND_FORMAT_PCMFLOAT, 0, 0, FMOD_DSP_RESAMPLER_LINEAR);
			FMODErrorCheck(result);
		}
	}

	// Initialise FMOD
	result = system->init(100, FMOD_INIT_NORMAL, 0);

	// If the selected speaker mode isn't supported by this sound card, switch it back to stereo
	if (result == FMOD_ERR_OUTPUT_CREATEBUFFER)
	{
		result = system->setSpeakerMode(FMOD_SPEAKERMODE_STEREO);
		FMODErrorCheck(result);
	
		result = system->init(100, FMOD_INIT_NORMAL, 0);
	}
	FMODErrorCheck(result);

	// ================================================================================================
	// Application-specific code
	// ================================================================================================

	bool quit = false;
	bool fading = false;
	int fadeLength = 3000;
	int fadeStartTick;

	// Open music as a stream
	FMOD::Sound *song1, *song2, *effect;
	result = system->createStream("Song1.mp3", FMOD_DEFAULT, 0, &song1);
	FMODErrorCheck(result);
	result = system->createStream("Song2.mp3", FMOD_DEFAULT, 0, &song2);
	FMODErrorCheck(result);

	// Load sound effects into memory (not streaming)
//.........这里部分代码省略.........

int FMOD_Main()
{
    FMOD::System     *system;
    FMOD::Sound      *sound, *sound_to_play;
    FMOD::Channel    *channel = 0;
    FMOD_RESULT       result;
    unsigned int      version;
    void             *extradriverdata = 0;
    int               numsubsounds;
    
    Common_Init(&extradriverdata);

    /*
        Create a System object and initialize.
    */
    result = FMOD::System_Create(&system);
    ERRCHECK(result);

    result = system->getVersion(&version);
    ERRCHECK(result);

    if (version < FMOD_VERSION)
    {
        Common_Fatal("FMOD lib version %08x doesn't match header version %08x", version, FMOD_VERSION);
    }

    result = system->init(32, FMOD_INIT_NORMAL, extradriverdata);
    ERRCHECK(result);

    /*
        This example uses an FSB file, which is a preferred pack format for fmod containing multiple sounds.
        This could just as easily be exchanged with a wav/mp3/ogg file for example, but in this case you wouldnt need to call getSubSound.
        Because getNumSubSounds is called here the example would work with both types of sound file (packed vs single).
    */
    result = system->createStream(Common_MediaPath("wave_vorbis.fsb"), FMOD_LOOP_NORMAL | FMOD_2D, 0, &sound);
    ERRCHECK(result);

    result = sound->getNumSubSounds(&numsubsounds);
    ERRCHECK(result);

    if (numsubsounds)
    {
        sound->getSubSound(0, &sound_to_play);
        ERRCHECK(result);
    }
    else
    {
        sound_to_play = sound;
    }

    /*
        Play the sound.
    */
    result = system->playSound(sound_to_play, 0, false, &channel);
    ERRCHECK(result);

    /*
        Main loop.
    */
    do
    {
        Common_Update();

        if (Common_BtnPress(BTN_ACTION1))
        {
            bool paused;
            result = channel->getPaused(&paused);
            ERRCHECK(result);
            result = channel->setPaused(!paused);
            ERRCHECK(result);
        }

        result = system->update();
        ERRCHECK(result);

        {
            unsigned int ms = 0;
            unsigned int lenms = 0;
            bool         playing = false;
            bool         paused = false;

            if (channel)
            {
                result = channel->isPlaying(&playing);
                if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
                {
                    ERRCHECK(result);
                }

                result = channel->getPaused(&paused);
                if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
                {
                    ERRCHECK(result);
                }

                result = channel->getPosition(&ms, FMOD_TIMEUNIT_MS);
                if ((result != FMOD_OK) && (result != FMOD_ERR_INVALID_HANDLE))
                {
                    ERRCHECK(result);
                }
//.........这里部分代码省略.........