Is it possible to edit music files stored on iphone in app and create ringtone from them?
Any help would be appreciated.
If I understand correctly, you want to extract the music from an existing iPhone app, and then turn that music from the app into a ring tone?
The short answer is no, not if you keep your iDevice up to date and within apple's licensed operating paradigm.
The longer answer is maybe. If you jailbreak the device, you may be able to hack access to the application and extract the desired data.
If I don't understand correctly, and you're just looking to change any old mp3 into an iPhone ringtone, try googling for iPhone ringtone hacks. Of course your mileage may vary but google is again your friend.
Sorry to not provide any code. This question didn't seem to warrant it.
No, for a number of reasons. The SDK doesn't give you access to the actual file data from the music library (just an object that will play music back for you), and while you can probably export an M4A file, with an "m4r" extension that iTunes will recognize as a ringtone, you'll have to get the user to take the file off their device and import it into iTunes manually for it to be usable as an actual ringtone on their phone.
Related
I'm currently developing an ios app with a lot of audio. I want to release versions in different languages but this means having all the audio in every language, which would take up too much space.
Is there a way to release different versions of the app to the different app stores, including only the relevant audio? Can this be done under one app name/id?
Thanks!
I believe that the short answer is 'no', but there are work arounds.
Each app id has one binary associated with it, although you can change the app name by localisation.
Audio is a resource, so there is no reason not to download it separately from a web server under your control. I don't believe there is any restriction on downloading media.
Alternatively, you can store the audio on Apple's servers and call it downloadable content for a freebie in app purchase.
I think you should use webservices to get the audio files from the server and get the relevant file from the server so this may help you to achieve only the relevant data in the application.
I'm not very well versed in the iPhone and Android API, so please bear with me if this is a stupid question.
As I understand it, Square's card reader works by converting the magnetic information on the card stripe into an audio tone that its software can then process. [1]
In a similar way, is there a way to somehow read what exactly is being displayed on the device screen simply through a small device inserted into the audio jack on that device?
[1] http://www.quora.com/How-does-Squares-hardware-work
It's not quite clear what you wish to achieve. You can indeed make an app that would output a representation (perhaps audio frequency-shift keying?) of the screen's contents to the iPhone's audio jack.
The iPhone (and other iOS-based devices) use TRRS connectors for bi-directional audio (and hence arbitrary modulated data) communication and there are well-supported publicly-documented APIs for using these interfaces.
That said, if you're writing your own app: why would you want to output the contents of the screen? If you are developing the app in question, why not transmit the salient data in a more effective manner? Which leads me to my next assumption:
You want to read what's being displayed on the device's screen at any time, not just when an app of your creation is open. In this case, the answer is that it is not possible, with the possible exception of a jailbroken solution. That said, I can't imagine a jailbroken solution being useful much longer on account of iOS 5 introduced "display mirroring" by means of AirPlay.
On Android, I have no idea. :-)
No. The screen is not connected to the audio jack.
I think you can make an app to take a screenshot and then encode that photo as music to play it.
It won't sound good though :)
For this kind of task, there is built in camera
Well, I will try best not to make it as a 'I just want the code' question...
I'm recently working on a project which requires some audio signal processing from local music files (e.g. iTunes Library). The whole work includes:
Get the PCM data of an audio file (normally from iTunes library); <--AudioQueue (?)
Write the PCM data to a new file (it seems that Apple does not allow direct modification on music tracks); <--CoreAudio(?)
Do some processing and modification, like filters, manipulators, etc. <-- Will be developed in C++
Play the processed track. <--RemoteIO
The problem is, after going through some blogs and discussions:
http://lists.apple.com/archives/coreaudio-api/2009/Aug/msg00100.html, http://atastypixel.com/blog/using-remoteio-audio-unit/
http://osdir.com/ml/coreaudio-api/2009-08/msg00093.html
as well as the official sample codes, I got a feeling that the CoreAudio SDK allow us to apply audio processing only on voice demos recorded from Mic.
My question is that:
Can I get raw data from iTunes library tracks instead of Mic input?
If the first question is 'No', is there a way to 'fool' the SDK to let it think it is getting data from Mic input, not from iTunes? (I have done some similar 'hacking' stuff in C# before XD)
If the whole processing just doesn't work, can anyone provide some alternative ideas?
Any help will be appreciated. Thank you very much :-)
Thanks.
Just found something really cool yesterday.
From iPhone Media Library to PCM Samples in Dozens of Confounding, Potentially Lossy Steps
(http://www.subfurther.com/blog/?p=1103
And also a class library by MIT:
TSLibraryImport: Objective-C class + sample code for importing files from user's iPod Library in iOS4.
(http://bitbucket.org/artgillespie/tslibraryimport/changeset/a81838f8c78a
Hope they help!
Cheers,
Manca
1) No. Apple does not allow direct access to PCM data of songs. Otherwise you could create music-sharing apps, which is not in Apple's interests.
2) No. Hacking and getting approved is impossible due to Apple's code approval mechanism.
3) The only alternative I could think of is that you have to do the processing part on PC/Mac and then transfer it to the iPhone. Or you would have to store the files in your own applications folder - you should be able to load and process these via CoreAudio.
I know this thread is old but... did this work for you, Manca? And did this app get approved?
EDIT: just discovered the AVAssetReader class, introduced since iOS 4.1, should help
How does one access an MP3 stored in iPhone iTune_controls directory? When i want to see the MP3 it is not visible for me in my applcation.
I'm not sure I understand your question correctly, but it sounds like you want to access an MP3 from your app that is in the iTunes (iPod?) area of the phone, is this correct?
If so then you can't directly access the file, since your app runs in an isolated sand-box.
If on the other hand you're wanting to play an MP3 that's part of your app then look in the iPhone Library - Audio Queue Services section.
I have read that Apple has allowed iPod Library Access in iPhone OS 3.0 and thus an App can access the data stored in the iPod.
I want to know that is there a possibility that the audio being played by an App can be published over a Network Stream.
Let me know your thoughts.
Thanks and Regards,
Muhammad Haseeb Khan
Can't be done. That "access" is very limited and does not include the audio data.
You can however broadcast, say, the playlist or the album art.
It really does open up a whole world of possibilities.