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;
}
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;
}
