zoul / finch Goto Github PK

The sound class exposes a length (duration) property, but that property is never set.

Quite often requested feature. Could be probably faked using performSelector:withObject:afterDelay:, see Stack Overflow.

It would be nice if Finch provided a cached sound system.

You could store a NSMutableDictionary of loaded sound filenames and return
the loaded sound if it exists.

It would be similar to Apple's image caching system for imageNamed.
Cached sound files don't have to be loaded again, reducing lag.

Sounds should upload faster, see Technical Note TN2199.

We set the audio session to AmbientSound, which seems to hamper MP3 decoding performace. The solution is to use SoloAmbientSound, but this disables mixing with iPod music. There should be some way to choose what exactly people want throught the API.

I would to see Finch be made into a singleton class.

Reason being, a iPhone app may have several view controllers, and someone could try
to create many factories/engines, that is to say, one in each view controller. This is bad.

However, since an iOS app should only be using one device and one context with OpenAL,
there will be conflicts opening and closing the same device.

So, there should only be one FIFactory/FIEngine class for the entire app.

Hello,

I'm having some trouble here implementing your code.

First, the demo seems to be not working properly here. It actually builds without any errors, but it doesn't launch the simulator and starts the app. Any ideas? Xcode 4.5.2.

Second, I'm having some trouble adding it as a static library on my app. I added it as a workspace and linked the binary with the library (Build Phases -> Link Binary with Libraries -> libFinch.a), but after that I couldn't find a way to work. It seems to be a popular problem, there are several threads around the web asking for help to install you code, but none of them provides any solution, even on StackOverFlow. Maybe a step by step or more information about it would be very appreciated, not only by me, but for several people around the web with the same problem.

Thanks you for all the trouble making this engine and I hope I can make it work here :)

Thomas

In order to compile for arm64 architecture, you'd need to change following line in FISampleBuffer.m and add casts to int, as the arm64 NSUInteger is a "long" primitive in 64bit architectures. I changed that, and the library seemed to work fine.

alBufferData(_handle, [self OpenALSampleFormat], [data bytes], [data length], sampleRate);

to

alBufferData(_handle, [self OpenALSampleFormat], [data bytes], (int)[data length], (int)sampleRate);

Hi. I like Finch's simplicity and I'm going to use it in production code. Therefore I'd really like to know whether it has been tested on iPad devices. Does it still mix fine with AVAudioPlayer and the device library music?
Thanks!

Hello,

I would like to see a method to convert mono samples to stereo, before
they are sent to OpenAL.

This would allow me to store all of my sounds on file as mono (less space), and then I can
convert them to stereo before playing them.

Details on Stack Overflow. Fix coming soon.

Select Finch Demo and iPhone 5.1 simulator. Build and run... crash...

I was having problems getting audio to play on iPhones running iOS 4.3 after OpenEars had initialized its audio session. The strangest part was that everything worked fine on an iPod Touch with 4.3 and an iPhone with iOS 5.

After a ton of searching, a ton of troubleshooting, and lots of banging my head against the wall I found that I could force the ALCcontext's Frequency to 16000 and sound was working again.

I added the following into the engine code:

int attrlist[] = { ALC_FREQUENCY, 16000, ALC_INVALID };
context = alcCreateContext(device, attrlist);

Obviously, not a robust solution, but I wanted to give you a heads up regarding a potential incompatibility. I unfortunately don't have the time to create a proper patch.

The sound length property does not work. It’s a trivial fix, I’ll do it as soon as I have a few minutes to spare.

Loading sounds by full path is needlesly complex, we should load sounds from the bundle by name just like many of the Apple classes do.

If we want the decoder stuff to be useful for other people, we have to separate the file reading from decoding and we have to decode the audio in chunks if the caller wants to.

Hey,

I've been experiencing an issue where the sound completely cuts off after a phone call has been answered inside the game. The only way to restore sound after is to restart the app completely (remove from multitasking)

Are there any ways to fix this?

Thanks

Is there a way to record the sounds played via Finch?

i have
[FISoundEngine sharedEngine];
in appdelegate

self.btnSound = [engine soundNamed:@"tapMusic.wav" maxPolyphony:4 error:NULL];

when [self.btnSound play] the first time，it stick，then no stuck

Finch seems great, but I'm trying to load uncompressed wavs and getting this in the console (on simulator and device):

"AudioStreamBasicDescription: 2 ch, 44100 Hz, 'lpcm' (0x00000C2C) 8.24-bit little-endian signed integer, deinterleaved
2010-10-31 13:56:15.560 xxxx[2822:307] There was an error loading a sound: No suitable decoder found for /var/mobile/Applications/.../xxxx.app/solved.wav."

My code:

soundEngine = [[Finch alloc] init];
NSString *pathToSolvedSound = [[NSBundle mainBundle] pathForResource:@"solved.wav" ofType:nil];
solvedSound = [[Sound alloc] initWithFile:pathToSolvedSound];

It's happened with multiple wav files from different sources.

First of all, thanks for all the great work!

It would be great if you could add a namespace to the library to avoid namespace collosions!

For instance, the class name "Decoder" is quite likely to already exist in a large project where Finch is imported. "FIDecoder", "FNDecoder", or just about any prefix if your choice would be much better! Just make sure that the prefix letters aren't already in use by any existing iOS library.

Hey,

Is it possible to control the volume of the sounds?

I'm using Finch for some sound effects in my game, similar to my background music volume slider I'd like to add one for sound effects.

Could you please point me in the correct direction?

Thanks
Luke

If you pause a sound that's playing, and then stop it, the library doesn't stop it, which means that if you then try to resume the sound, it will start playing again. The normal behavior ought to be that if you stop a sound, it doesn't start playing when you try to unpause (ie resume) it.

The problem lies in these lines in FISoundSource.m:

- (void) stop { if ([self isPlaying]) { alSourceStop(_handle); } }

The conditional should also check if the sound is currently paused.

See http://stackoverflow.com/questions/9023124. If it works, polyphony would not waste so much memory.

Current code:

- (void) play
{
    [(FISound*) [voices objectAtIndex:current] play];
    current = (current + 1) % [voices count];
}

- (void) stop
{
    [[voices objectAtIndex:current] stop];
}

Now the current index gets bumped when the sample starts playing, so that we can’t use it to stop.

I am probably doing something rather stupid but i just cannot figure it out. I am new to this. Any help would be appreciated.
- (void)viewDidLoad{
[super viewDidLoad];
engine = [[Finch alloc] init];
snare = [[Sound alloc] initWithFile:
[[NSBundle mainBundle] URLForResource:@"snare" withExtension:@"wav"]];
}

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration {
    if (acceleration.z < -0.7)
        [snare play];
}

After the rewrite most of the error handling code got axed, we should at least log the errors found during sound loading.

Would be great if someone could make a Cocoapod for this, os it can be installed via Cocoapods!

Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/clang failed with exit code 1

I tried to compile the Demo for the simulator on my machine and got the above error. I changed the Active SKDSs to 4.0/4.1 and saw the same error. I couldn't see anything else in the project settings which might be causing this.

the clang file is where it should be on my system. XCode 3.2.4 with SDKs 4.0 and 4.1 installed on MacBook Pro.

Need to mention at least the -ObjC flag and header searching.

Hey Zoel,
I've been trying to go off of your Finch Code to play multiple sounds at the same time. If the first sound is playing a pop occurs when the second sound begins which I think is a result of the sound not being preloaded to a buffer. I found some other source codes for openal around the web but they negate the ease of Finch.

here is how I create and play the sounds

string1 = [[Sound alloc] initWithFile:[[NSBundle mainBundle] URLForResource:@"Sound1" withExtension:@"wav"]];
string2 = [[Sound alloc] initWithFile:[[NSBundle mainBundle] URLForResource:@"Sound2" withExtension:@"wav"]];
[string1 play];
[string2 play];

also in Sound.m I tried commenting out the stop.

- (void) play
{
    // if (self.playing)
    // [self stop];
    CLEAR_ERROR_FLAG;
    alSourcePlay(source);
    [self checkSuccessOrLog:@"Failed to start sound"];
}

This eliminates the pop from the sounds if the sound is currently playing.

play1 
play2 *pop*
play1 (play1 and play2 still playing) no pop
play2 (play1 and play2 still playing) no pop
play1 (play1 NOT currently playing and play2 still playing) *pop*

I hope that kind of makes sense. The pop occurs when a sound goes from a non playing state to a playing state while the other sound is playing.

Any advice would be appreciated. I'm been on this thing for weeks now.
Thanks,
Nick

How to seek in an audio file using finch.

First of all, Finch is a great plugin, it has greatly simplified the music app I'm building. Thanks!

Secondly, I have a problem with sounds popping when I stop them. I'm essentially using Finch as a sampler of sorts for when users press notes, it plays the sample I've recorded corresponding to that note. But every time I call "Stop" on the sound, I get a small but noticeable popping sound. It happens sometimes when multiple sounds are played at once when the sound begins, but always happens when you release the sound. Any idea why it might be? I'm not necessarily sure if it has much to do with your code, but I've searched and searched for why this might be happening and can't find anything that fixes it anywhere.

Thanks!

wav and caf are too big; I have about 40 sound effects I want to use. In linear pcm that comes to about 17MB.