[[SimpleAudioEngine sharedEngine] playEffect] with NSTemporaryDirectory()

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[[SimpleAudioEngine sharedEngine] playEffect] with NSTemporaryDirectory()

(10 posts) (2 voices)

Started 1 year ago by rahulkukreti
Latest reply from Steve Oldmeadow

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rahulkukreti
Member

Hi...

I am recording an audio using AVAudioRecorder and the path of that audio file is NSTemporaryDirectory(),

recording has been done successfuly (as i hav chkd it)

Now when I am using below snippet it works fine..

NSString *path = [NSTemporaryDirectory() stringAppendingString:@"someSound.caf"];
[[SimpleAudioEngine sharedEngine] playBackgroundMusic:path];

but its not working for below snippet...

NSString *path = [NSTemporaryDirectory() stringAppendingString:@"someSound.caf"];
[[SimpleAudioEngine sharedEngine] playEffect:path];

I have to use "[[SimpleAudioEngine sharedEngine] playEffect:path];" as i have to set pitch,gain of audiofile..
Above thing is not working for simulator as well as device

Plz help me out...

Posted 1 year ago #
Steve Oldmeadow
Administrator

You are probably not saving your audio in a format that can be loaded to OpenAL for use by playEffect. Can you please post the settings you are using for the AVAudioRecorder as well as the console output from CocosDenshion when you try to use playEffect.

Posted 1 year ago #
rahulkukreti
Member

thanx for quick reply here are the settings used to record the audio....

-(void) startRecording
{

AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;
[audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
if(err)
{
NSLog(@"Some error");

}
[audioSession setActive:YES error:&err];
err = nil;

//Settings for AVAudioRecorder

recordSetting = [[NSMutableDictionary alloc] init];

[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

[recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];

recorderFilePath = [NSTemporaryDirectory() stringByAppendingString:@"someAudio.caf"];

NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
err = nil;
recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];
if(!recorder){
NSLog(@"Some Error");
}

//prepare to record

[recorder setDelegate:self];
[recorder prepareToRecord];
recorder.meteringEnabled = YES;

// start recording
[recorder recordForDuration:(NSTimeInterval) 10];

}

I am not getting any console output from CocosDenshion when using playEffect.

Posted 1 year ago #
Steve Oldmeadow
Administrator
```
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
```
That is wrong. Linear PCM has to be little endian to be loaded for use by playEffect.

To get console output from CocosDenshion you have to enable CD_DEBUG in the CDConfig file or if you are using an old version you need to do a debug build.
Posted 1 year ago #
rahulkukreti
Member

Hi steve...

this is what i am getting in console...
as it is showing sample rate is not matching..
what should be the sample rate that matches mixer sample rate..

2010-06-21 10:40:46.173 cocos2d9[556:207] Denshion::CDSoundEngine - Loading openAL buffer 0 rahul.wav
2010-06-21 10:40:46.175 cocos2d9[556:207] Denshion::CDSoundEngine - size 352512 frequency 22050 format 4355 80384000
2010-06-21 10:40:46.176 cocos2d9[556:207] Denshion::CDSoundEngine - WARNING sample rate does not match mixer sample rate performance will not be optimal.

Posted 1 year ago #
Steve Oldmeadow
Administrator

You have to execute this code before you access the shared instance of SimpleAudioEngine.

[CDSoundEngine setMixerSampleRate:CD_SAMPLE_RATE_MID];

However, that only affects performance and is unlikely to make much difference when only playing one sound. What you are seeing in the console is just a warning, that sound should still play.

Posted 1 year ago #
rahulkukreti
Member

Hi steve...

I tried to change mixer sample rate using

[CDSoundEngine setMixerSampleRate:CD_SAMPLE_RATE_MID];

and in AVAudioRecorder settings i m using "CD_SAMPLE_RATE_MID" sample rate...

now in console i m not getting any warnings but still no playeffect is playing...
console output for statement "[[SimpleAudioEngine sharedEngine] playEffect:[NSTemporaryDirectory() stringByAppendingFormat:@"rahul%d.wav",i] pitch:1.2 pan:0.5 gain:1];" is:

2010-06-21 11:18:07.363 cocos2d9[1351:207] Recording is done
2010-06-21 11:18:07.364 cocos2d9[1351:207] Denshion::CDSoundEngine - Loading openAL buffer 0 /var/folders/xG/xGaM4ELzEnCQCNJDFXCgTk+++TI/-Tmp-/rahul2.wav
2010-06-21 11:18:07.377 cocos2d9[1351:207] Denshion::CDSoundEngine - size 441000 frequency 22050 format 4355 114294784
2010-06-21 11:18:07.378 cocos2d9[1351:207] Denshion::CDSoundEngine - =============== Buffer Loaded ===============

Posted 1 year ago #
Steve Oldmeadow
Administrator

@rahul - according to that console log the sound loaded so I don't know why it isn't playing. Some possibilities:
1) You are testing in the simulator
2) You have muted or disabled the sound engine
3) You have muted the device via the ringer switch

Posted 1 year ago #

rahulkukreti
Member

1. I have also tested samething in device.
2. I am playing same file using "playBackgroundMusic" and thats working fine so no issue of disabling sound engine or muting it,

anyways thanx 4 ur support!!!

well this is d whole code, plz look it once may dis will help u to help me...

SimpleAudioEngine *myAudioEngine;
AVAudioRecorder *recorder;
NSString *recorderFilePath;

CCMenuItemLabel ,*pitchHigh,*pitchNormal,*pitchLow;
CCMenuItemLabel ,*startRecord,*stopRecord;

CCMenu *pitchMenu,*playMenu;

- (id) init
{
	self = [super init];
	if (self != nil) {

		self.isTouchEnabled = YES;
		myAudioEngine = [SimpleAudioEngine sharedEngine];

		pitchHigh = [CCMenuItemLabel itemWithLabel:[CCLabel labelWithString:@"High" fontName:@"Arial" fontSize:22] target:self selector:@selector(pitchOption:)];

		pitchLow = [CCMenuItemLabel itemWithLabel:[CCLabel labelWithString:@"Low" fontName:@"Arial" fontSize:22] target:self selector:@selector(pitchOption:)];

		pitchNormal = [CCMenuItemLabel itemWithLabel:[CCLabel labelWithString:@"Normal" fontName:@"Arial" fontSize:22] target:self selector:@selector(pitchOption:)];

		pitchMenu = [CCMenu menuWithItems:pitchHigh,pitchNormal,pitchLow,nil];
		[pitchMenu setPosition:ccp(240,160)];
		[pitchMenu alignItemsVertically];
		[self addChild:pitchMenu];

		startRecord = [CCMenuItemLabel itemWithLabel:[CCLabel labelWithString:@"Start" fontName:@"Arial" fontSize:28] target:self selector:@selector(startRecording:)];
		stopRecord = [CCMenuItemLabel itemWithLabel:[CCLabel labelWithString:@"Stop" fontName:@"Arial" fontSize:28] target:self selector:@selector(stopRecording:)];

		playMenu = [CCMenu menuWithItems:startRecord,stopRecord,nil];
		[playMenu setPosition:ccp(240,290)];
		[playMenu alignItemsHorizontally];
		[self addChild:playMenu];

	}
	return self;
}

- (void) startRecording:(id) sender
{

	AVAudioSession *audioSession = [AVAudioSession sharedInstance];
	NSError *err = nil;
	[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:&err];

	if(err){
        NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
        return;
	}

	[audioSession setActive:YES error:&err];
	err = nil;
	if(err){
        NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
        return;
	}

	recordSetting = [[NSMutableDictionary alloc] init];

	[recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
	[recordSetting setValue:[NSNumber numberWithFloat:CD_SAMPLE_RATE_MID] forKey:AVSampleRateKey];
	[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

	[recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
	[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
	[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];

	NSString *tmpdir = NSTemporaryDirectory();

	recorderFilePath = [tmpdir stringByAppendingString:@"rahul.caf"];

	NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
	err = nil;
	recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];

	if(!recorder){
        NSLog(@"recorder: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
        UIAlertView *alert =
        [[UIAlertView alloc] initWithTitle: @"Warning"
								   message: [err localizedDescription]
								  delegate: nil
						 cancelButtonTitle:@"OK"
						 otherButtonTitles:nil];
        [alert show];
        [alert release];
        return;
	}

	//prepare to record
	[recorder setDelegate:self];
	[recorder prepareToRecord];
	recorder.meteringEnabled = YES;

	BOOL audioHWAvailable = audioSession.inputIsAvailable;
	if (! audioHWAvailable) {
        UIAlertView *cantRecordAlert =
        [[UIAlertView alloc] initWithTitle: @"Warning"
								   message: @"Audio input hardware not available"
								  delegate: nil
						 cancelButtonTitle:@"OK"
						 otherButtonTitles:nil];
        [cantRecordAlert show];
        [cantRecordAlert release];
        return;
	}

	// start recording

	[recorder recordForDuration:(NSTimeInterval) 10];

}

- (void) stopRecording:(id) sender
{

	[recorder stop];	

}

- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *) aRecorder successfully:(BOOL)flag
{

	NSLog(@"Recording done!!!");

}

-(void) pitchOption:(id) sender
{
	[CDSoundEngine setMixerSampleRate:CD_SAMPLE_RATE_MID];

	NSString *path = [NSTemporaryDirectory() stringByAppendingString:@"rahul.caf"];

	if(sender == pitchHigh)
	{

		[myAudioEngine playEffect:path pitch:1.2 pan:0.5 gain:1];
	}
	else if(sender == pitchNormal)
	{
		[myAudioEngine playEffect:path];

	}
	else if(sender == pitchLow)
	{

		[myAudioEngine playEffect:path pitch:0.8 pan:0.5 gain:1];
	}

}

Posted 1 year ago #

Steve Oldmeadow
Administrator
One thing I can see that is odd is that you are playing your sounds with pan = 0.5, if you want the sound centred then you need 0.0f. However, that shouldn't cause a problem with the sound playback unless you had a problem with your right speaker.
```
NSDictionary *recordSettings =
[[NSDictionary alloc] initWithObjectsAndKeys:
[NSNumber numberWithFloat: 22050], AVSampleRateKey,
[NSNumber numberWithInt: kAudioFormatLinearPCM], AVFormatIDKey,
[NSNumber numberWithInt: 1], AVNumberOfChannelsKey,
[NSNumber numberWithInt: AVAudioQualityMedium], AVEncoderAudioQualityKey,
nil];
```
I have an app that does something very similar to what you are trying. My recorder settings are above. Then I use CDAudioManager's loadBuffer to load the file. It works fine for me.
Posted 1 year ago #

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