I'm wondering if anyone has knowledge of any kind of modplayer library for iphone? I've searched, but couldn't find anything.
MikMod for the mac uses CoreAudio, so it might "just work" on the iPhone.
I successfully implemented a mod/s3m player on the iPhone using Audio Queue Services.
I have a chiptune player nearly finished : it's based on modplug for the module part.
basically it is as simple as recompiling the lib (modplug) and interface it with an audio buffer queue, as stated by Manuel.
here's a quick video of my stuff :
http://www.youtube.com/watch?v=jGJ560-qAio
do not hesitate to send an email if you need some help
For a non-app version, it may be worth checking out Matt Westcott's JSModPlayer:
http://matt.west.co.tt/music/jsmodplayer/
It is Javascript and heavily under development, already there is a fork of it on GitHub. It does work though, but is a bit of a CPU hog!
Related
I want to create a program that stream the screen of my Mac to my iPhone. Kind of like it is done in Liveview. I'm still relatively new to Objective-C, so I don't know where to start to make such an application.
It seems you have to have something installed both on your Mac and on your iPhone, but how would you actually stream the screen of your Mac to your iPhone?
Hope someone can point me in the right direction.
Update of question
Thanks for the answers. Still seems a bit vague to me and I'm not sure I really need full video streaming. Implementing also seems to be a pain, since there aren't any real good resources for it.
Taking a screenshot every second or so and streaming it to my iPhone as an image, would actually be ok. I've figured out how to stream an image with Bonjour from my Mac to my iPhone.
The screenshot I need to send to my iPhone is of the design that I'm currently working on in photoshop. I've figured out how to take a screenshot and how to get a list of all open windows. But how to make a snapshot of an open PSD-file, I don't know.
Any suggestions on that?
It's a very big subject, so not really something that can be tackled with a simple response. However, I would suggest that one approach would be to write a VNC client for the iPhone. Indeed, this open source exists that's probably worth a look:
http://code.google.com/p/vnsea/
Tim
I would go with the frequent screenshot approach. You would prepare a screenshot of the item you want to transmit and then use some easy library like my DTBonjour to transmit these objects via WiFi to iOS clients.
https://www.cocoanetics.com/2012/11/and-bonjour-to-you-too/
If you were using layer-backing then you could also use the renderLayer... methods which would also include sub-layers.
The most fidelity you'd get from encoding the individual screen shots in a streaming video format, though this is way more work.
This is called RFB (or RDP), and most remote-screen applications use RFB/RDP protocol and libraries which implement it.
i'm trying to make a C++ engine that will read a mp3 file, and make some image zoom/translation depending on the time of the reading sound file. I think I could use OpenGL ES to render what I want, and calling some OpenGL ES instructions in my C++ files, and init my drawing context in Obj-C/Java. I want to do the same for the sound, but i don't really know what to use, and if I can really do it or not in C++.
I searched for library so I found Bass and Fmod (which is not free for commercial use). They said it's multicross platform (Windows, Unix, MacOS) but I dont understand if it manners for mobile, and if I can really use it. Does anyone have been through this? Do you recommand me another free library?
Thanks again, and I apologize for my poor english,
Arnaud
Have a look at libpd (Pure Data for embedded applications)
http://download.puredata.info/libpd (the library has been released very recently, but the code is very mature indeed)
http://createdigitalmusic.com/2010/10/libpd-put-pure-data-in-your-app-on-an-iphone-or-android-and-everywhere-free/
Audio is often problematic and it is pretty much always a good idea to write your own high-level API that does exactly what you want to do (and nothing else) and to assume you will then be writing a thin layer between it and whatever audio library you are using underneath. If you're lucky and there's a library available that does things the way you would do them then it's trivial. If not, at least it's still possible. In either case, your app code is not tied to an external sound API.
I have used FMOD on multiple different commercial projects over the years for PC, Mac and iPhone, and have always liked it - but it's not free. OpenAL has always seemed sorta, I dunno: clunky? But you only have to deal with it when writing your API layer, and your app code never has to see it.
It's easy for me to say "write your own API" since I've been writing commercial games for 20 years and so know what I think an audio API should look like. If you don't have your own idea how you think it should be, then I suggest you look at a 3rd party library that makes sense to you and take the functions from it that you will be using and write your own API to do be a set of functions that do nothing but call those.
Since you have both OpenAL and FMOD available to you free for development you can then make your API work with both, and chances are it's then going to work with anything else you might come across.
OpenAL may be your best bet. Look at this answer: Android OpenAL?
It seems possible to compile OpenAL on Android.
If you are looking for just PCM audio input/output ( and not MP3 decoding ) try PortAudio or RTAudio
RtAudio or PortAudio, which one to use?
I've started looking on the subject of Acoustic Fingerprint (http://en.wikipedia.org/wiki/Acoustic_fingerprint) for a pet project of mine for the iOS and I was wondering if there are:
Any opensource libraries or source code for the iOS that handle this?
Assuming I'm a veteran jack of all trades coder, is it very problematic to implement this myself if there is no open-source versions?
Will the Accelerate DSP library in iOS able to handle such a task?
Thanks
you may want to check out the EchoPrint CodeGen library by The Echo Nest. They even have a fully functional iOS code example.
You can find some additional links to open source audio fingerprinting related software in this MusicBrainz article, but AFAIK the EchoPrint library is the only one that has a license that is compatible with iOS apps.
Good Luck!
Not of my knowledge
No problem for a veteran, that won't be easy, but achievable.
Never looked into.
Even in java, this might be an interesting reading.
Before doing anything, especially if you intend to sell on AppStore, take care that these techniques/algorithms are patented. Read what happened to the above blog post writer.
Will the Accelerate DSP library in iOS able to handle such a task?
NO
I also notice that you put the tag "voice recognition". Just to make sure voice recognition as nothing to do with audio identification/acoustic fingerprinting !!
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
I am working on an application that will stream music from a server of mine from an iPhone application.
This is my first iPhone app so I am a bit confused :
What would be the best way to do
this?
Is there something already built in
that I could use, like a MP3 player
that I just need to point toward the
correct server?
Do I need a streaming server to do
so?
I'm relatively new to Objective-C/Cocoa (touch), but I have read an article on the cocoawithlove site titled "Streaming and playing an MP3 stream" and tested the sample code on my iPhone and it works perfectly. I don't know about the licensing or anything, if you would be able to use it, but I'm sure someone or even you can figure that out.
Sorry again for not being able to provide any more information or even a link. This is my first answer on SO and cannot post hyperlinks :(
(edit: Here's the link: Streaming and playing an MP3 stream)