Beispiel #1
0
int main(int argc, char *argv[])
{
    FMOD::System          *system  = 0;
    FMOD::Sound           *sound   = 0;
    FMOD::Channel         *channel = 0;
    FMOD_RESULT            result;
    FMOD_CREATESOUNDEXINFO exinfo;
    int                    key, driver, recorddriver, numdrivers, count;
    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;
    }

    /* 
        System initialization
    */
    printf("---------------------------------------------------------\n");    
    printf("Select OUTPUT type\n");    
    printf("---------------------------------------------------------\n");    
    printf("1 :  OSS        - Open Sound System\n");
    printf("2 :  ALSA       - Advanced Linux Sound Architecture\n");
    printf("3 :  ESD        - Enlightenment Sound Daemon\n");
    printf("4 :  PULSEAUDIO - Pulse Audio Sound Server\n");
    printf("---------------------------------------------------------\n");
    printf("Press a corresponding number or ESC to quit\n");

    do
    {
        key = getch();
    } while (key != 27 && key < '1' && key > '5');
    
    switch (key)
    {
        case '1' :  result = system->setOutput(FMOD_OUTPUTTYPE_OSS);
                    break;
        case '2' :  result = system->setOutput(FMOD_OUTPUTTYPE_ALSA);
                    break;
        case '3' :  result = system->setOutput(FMOD_OUTPUTTYPE_ESD);
                    break;
        case '4' :  result = system->setOutput(FMOD_OUTPUTTYPE_PULSEAUDIO);
                    break;
        default  :  return 1; 
    }  
    ERRCHECK(result);
    
    /*
        Enumerate playback devices
    */

    result = system->getNumDrivers(&numdrivers);
    ERRCHECK(result);

    printf("---------------------------------------------------------\n");    
    printf("Choose a PLAYBACK driver\n");
    printf("---------------------------------------------------------\n");    
    for (count=0; count < numdrivers; count++)
    {
        char name[256];

        result = system->getDriverInfo(count, name, 256, 0);
        ERRCHECK(result);

        printf("%d : %s\n", count + 1, name);
    }
    printf("---------------------------------------------------------\n");
    printf("Press a corresponding number or ESC to quit\n");

    do
    {
        key = getch();
        if (key == 27)
        {
            return 0;
        }
        driver = key - '1';
    } while (driver < 0 || driver >= numdrivers);

    result = system->setDriver(driver);
    ERRCHECK(result);

    /*
        Enumerate record devices
    */

    result = system->getRecordNumDrivers(&numdrivers);
    ERRCHECK(result);

    printf("---------------------------------------------------------\n");    
    printf("Choose a RECORD driver\n");
    printf("---------------------------------------------------------\n");    
    for (count=0; count < numdrivers; count++)
    {
        char name[256];

        result = system->getRecordDriverInfo(count, name, 256, 0);
        ERRCHECK(result);

        printf("%d : %s\n", count + 1, name);
    }
    printf("---------------------------------------------------------\n");
    printf("Press a corresponding number or ESC to quit\n");

    recorddriver = 0;
    do
    {
        key = getch();
        if (key == 27)
        {
            return 0;
        }
        recorddriver = key - '1';
    } while (recorddriver < 0 || recorddriver >= numdrivers);

    printf("\n");
  
    result = system->init(32, FMOD_INIT_NORMAL, 0);
    ERRCHECK(result);

    memset(&exinfo, 0, sizeof(FMOD_CREATESOUNDEXINFO));

    exinfo.cbsize           = sizeof(FMOD_CREATESOUNDEXINFO);
    exinfo.numchannels      = 2;
    exinfo.format           = FMOD_SOUND_FORMAT_PCM16;
    exinfo.defaultfrequency = 44100;
    exinfo.length           = exinfo.defaultfrequency * sizeof(short) * exinfo.numchannels * 5;
    
    result = system->createSound(0, FMOD_2D | FMOD_SOFTWARE | FMOD_OPENUSER, &exinfo, &sound);
    ERRCHECK(result);

    printf("===================================================================\n");
    printf("Recording example.  Copyright (c) Firelight Technologies 2004-2011.\n");
    printf("===================================================================\n");
    printf("\n");
    printf("Press 'r' to record a 5 second segment of audio and write it to a wav file.\n");
    printf("Press 'p' to play the 5 second segment of audio.\n");
    printf("Press 'l' to turn looping on/off.\n");
    printf("Press 's' to stop recording and playback.\n");
    printf("Press 'w' to save the 5 second segment to a wav file.\n");
    printf("Press 'Esc' to quit\n");
    printf("\n");

    /*
        Main loop.
    */
    do
    {
        static FMOD::Channel *channel = 0;
        static bool  looping    = false;
        bool         recording  = false;
        bool         playing    = false;
        unsigned int recordpos = 0;
        unsigned int playpos = 0;
        unsigned int length;

        if (kbhit())
        {
            key = getch();

            switch (key)
            {
                case 'r' :
                case 'R' :
                {
                    result = system->recordStart(recorddriver, sound, looping);
                    ERRCHECK(result);
                    break;
                }
                case 'p' :
                case 'P' :
                {
                    if (looping)
                    {
                        sound->setMode(FMOD_LOOP_NORMAL);
                    }
                    else
                    {
                        sound->setMode(FMOD_LOOP_OFF);
                    }
                    ERRCHECK(result);

                    result = system->playSound(FMOD_CHANNEL_REUSE, sound, false, &channel);
                    ERRCHECK(result);
                    break;
                }
                case 'l' :
                case 'L' :
                {
                    looping = !looping;
                    break;
                }
                case 's' :
                case 'S' :
                {
                    result = system->recordStop(recorddriver);
                    if (channel)
                    {
                        channel->stop();
                        channel = 0;
                    }
                    break;
                }
                case 'w' :
                case 'W' :
                {
                    printf("Writing to record.wav ...                                                     \r");

                    SaveToWav(sound);
                    Sleep(500);
                    break;
                }
            }
        }

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

        system->isRecording(recorddriver, &recording);
        ERRCHECK(result);

        system->getRecordPosition(recorddriver, &recordpos);
        ERRCHECK(result);

        if (channel)
        {
            channel->isPlaying(&playing);
            ERRCHECK(result);

            channel->getPosition(&playpos, FMOD_TIMEUNIT_PCM);
            ERRCHECK(result);
        }

        printf("State: %-19s. Record pos = %6d : Play pos = %6d : Loop %-3s\r", recording ? playing ? "Recording / playing" : "Recording" : playing ? "Playing" : "Idle", recordpos, playpos, looping ? "On" : "Off");
        fflush(stdout);

        system->update();

        fflush(stdout);
        Sleep(10);

    } while (key != 27);

    printf("\n");

    /*
        Shut down
    */
    result = sound->release();
    ERRCHECK(result);

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

    return 0;
}
Beispiel #2
0
int FMOD_Main()
{
    FMOD::Channel *channel = NULL;
    unsigned int samplesRecorded = 0;
    unsigned int samplesPlayed = 0;
    bool dspEnabled = false;

    void *extraDriverData = NULL;
    Common_Init(&extraDriverData);

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

    unsigned int version = 0;
    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(100, FMOD_INIT_NORMAL, extraDriverData);
    ERRCHECK(result);

    int numDrivers = 0;
    result = system->getRecordNumDrivers(NULL, &numDrivers);
    ERRCHECK(result);

    if (numDrivers == 0)
    {
        Common_Fatal("No recording devices found/plugged in!  Aborting.");
    }

    /*
        Determine latency in samples.
    */
    int nativeRate = 0;
    int nativeChannels = 0;
    result = system->getRecordDriverInfo(DEVICE_INDEX, NULL, 0, NULL, &nativeRate, NULL, &nativeChannels, NULL);
    ERRCHECK(result);

    unsigned int driftThreshold = (nativeRate * DRIFT_MS) / 1000;       /* The point where we start compensating for drift */
    unsigned int desiredLatency = (nativeRate * LATENCY_MS) / 1000;     /* User specified latency */
    unsigned int adjustedLatency = desiredLatency;                      /* User specified latency adjusted for driver update granularity */
    int actualLatency = desiredLatency;                                 /* Latency measured once playback begins (smoothened for jitter) */

    /*
        Create user sound to record into, then start recording.
    */
    FMOD_CREATESOUNDEXINFO exinfo = {0};
    exinfo.cbsize           = sizeof(FMOD_CREATESOUNDEXINFO);
    exinfo.numchannels      = nativeChannels;
    exinfo.format           = FMOD_SOUND_FORMAT_PCM16;
    exinfo.defaultfrequency = nativeRate;
    exinfo.length           = nativeRate * sizeof(short) * nativeChannels; /* 1 second buffer, size here doesn't change latency */
    
    FMOD::Sound *sound = NULL;
    result = system->createSound(0, FMOD_LOOP_NORMAL | FMOD_OPENUSER, &exinfo, &sound);
    ERRCHECK(result);

    result = system->recordStart(DEVICE_INDEX, sound, true);
    ERRCHECK(result);

    unsigned int soundLength = 0;
    result = sound->getLength(&soundLength, FMOD_TIMEUNIT_PCM);
    ERRCHECK(result);

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

        /*
            Add a DSP effect -- just for fun
        */
        if (Common_BtnPress(BTN_ACTION1))
        {
            FMOD_REVERB_PROPERTIES propOn = FMOD_PRESET_CONCERTHALL;
            FMOD_REVERB_PROPERTIES propOff = FMOD_PRESET_OFF;

            dspEnabled = !dspEnabled;

            result = system->setReverbProperties(0, dspEnabled ? &propOn : &propOff);
            ERRCHECK(result);
        }

        result = system->update();
        ERRCHECK(result);
       
        /*
            Determine how much has been recorded since we last checked
        */
        unsigned int recordPos = 0;
        result = system->getRecordPosition(DEVICE_INDEX, &recordPos);
        if (result != FMOD_ERR_RECORD_DISCONNECTED)
        {
            ERRCHECK(result);
        }

        static unsigned int lastRecordPos = 0;
        unsigned int recordDelta = (recordPos >= lastRecordPos) ? (recordPos - lastRecordPos) : (recordPos + soundLength - lastRecordPos);
        lastRecordPos = recordPos;
        samplesRecorded += recordDelta;

        static unsigned int minRecordDelta = (unsigned int)-1;
        if (recordDelta && (recordDelta < minRecordDelta))
        {
            minRecordDelta = recordDelta; /* Smallest driver granularity seen so far */
            adjustedLatency = (recordDelta <= desiredLatency) ? desiredLatency : recordDelta; /* Adjust our latency if driver granularity is high */
        }
        
        /*
            Delay playback until our desired latency is reached.
        */
        if (!channel && samplesRecorded >= adjustedLatency)
        {
            result = system->playSound(sound, 0, false, &channel);
            ERRCHECK(result);
        }

        if (channel)
        {
            /*
                Stop playback if recording stops.
            */
            bool isRecording = false;
            result = system->isRecording(DEVICE_INDEX, &isRecording);
            if (result != FMOD_ERR_RECORD_DISCONNECTED)
            {
                ERRCHECK(result);
            }

            if (!isRecording)
            {
                result = channel->setPaused(true);
                ERRCHECK(result);
            }

            /*
                Determine how much has been played since we last checked.
            */
            unsigned int playPos = 0;
            result = channel->getPosition(&playPos, FMOD_TIMEUNIT_PCM);
            ERRCHECK(result);

            static unsigned int lastPlayPos = 0;
            unsigned int playDelta = (playPos >= lastPlayPos) ? (playPos - lastPlayPos) : (playPos + soundLength - lastPlayPos);
            lastPlayPos = playPos;
            samplesPlayed += playDelta;
            
            /*
                Compensate for any drift.
            */
            int latency = samplesRecorded - samplesPlayed;
            actualLatency = (0.97f * actualLatency) + (0.03f * latency);

            int playbackRate = nativeRate;
            if (actualLatency < (adjustedLatency - driftThreshold)) 
            {
                /* Play position is catching up to the record position, slow playback down by 2% */
                playbackRate = nativeRate - (nativeRate / 50); 
            }
            else if (actualLatency > (adjustedLatency + driftThreshold))
            {
                /* Play position is falling behind the record position, speed playback up by 2% */
                playbackRate = nativeRate + (nativeRate / 50);
            }

            channel->setFrequency((float)playbackRate);
            ERRCHECK(result);
        }

        Common_Draw("==================================================");
        Common_Draw("Record Example.");
        Common_Draw("Copyright (c) Firelight Technologies 2004-2015.");
        Common_Draw("==================================================");
        Common_Draw("");
        Common_Draw("Adjust LATENCY define to compensate for stuttering");
        Common_Draw("Current value is %dms", LATENCY_MS);
        Common_Draw("");
        Common_Draw("Press %s to %s DSP effect", Common_BtnStr(BTN_ACTION1), dspEnabled ? "disable" : "enable");
        Common_Draw("Press %s to quit", Common_BtnStr(BTN_QUIT));
        Common_Draw("");
        Common_Draw("Adjusted latency: %4d (%dms)", adjustedLatency, adjustedLatency * 1000 / nativeRate);
        Common_Draw("Actual latency:   %4d (%dms)", actualLatency, actualLatency * 1000 / nativeRate);
        Common_Draw("");
        Common_Draw("Recorded: %5d (%ds)", samplesRecorded, samplesRecorded / nativeRate);
        Common_Draw("Played:   %5d (%ds)", samplesPlayed, samplesPlayed / nativeRate);

        Common_Sleep(10);
    } while (!Common_BtnPress(BTN_QUIT));

    /*
        Shut down
    */
    result = sound->release();
    ERRCHECK(result);
    result = system->release();
    ERRCHECK(result);

    Common_Close();

    return 0;
}