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Yet Another Max/MSP-Cocoa Communication

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Nao Tokui
Nao Tokui

This slide presents cocoa_send / receive external objects for Cycling'74 Max/MSP, which enables simple and stable communication between Max/MSP and Native OS X Cocoa programming environment.

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Yet Another Max/MSP - Cocoa Integration cocoa-send / cocoa-receive external objects Nao Tokui 1
Why Integrate? ? Max/MSP ¡ð Useful for Audio / MIDI / Images .... !! Scalability ¡Á Hard to manage big data set. 2
Why Integrate? ? Cocoa - Native OS X Environment ¡ð Lots of useful frameworks and easy-to-use tools for them. ? Frameworks - CoreData, Bonjour, QuartzComposer... ? Tool - Xcode, InterfaceBuilder... ¡Á Audio / MIDI API is very very complicated. ? Core Audio / Core MIDI / Quick Time 3
Max/MSP Cocoa Bonjour Audio CoreData MIDI OpenGL 4
Conventional Ways ? MIDI? ? CoreMIDI - Simply Overkill! ? Open Sound Control ? Very ?exible, but clumsy implementation ? Not easy to use in Cocoa 5
NE W cocoa_send / receive external object 6
Features ¡ð Simple to implement and Just works! ¡ð No need to ¡°connect¡± explicitly (Always Connected!!) ¡Á Limited to local use OK NG! Cocoa Max Cocoa Max http://commons.wikimedia.org/w/index.php?title=Image:MacBook_Pro_transparency.png 7
Technical Details ? cocoa_send/receive use OS X¡¯s Inter- Application Communication called ¡°Distributed Noti?cations¡± ? eg.) Preference Pane ? http://developer.apple.com/documentation/UserExperience/Conceptual/ PreferencePanes/Tasks/Communication.html 8
How to Use #1 1. Download cocoa_send/receive objects and sample application from www.naotokui.com 2. Set ¡°Channel Names¡± ? These names will be used to identify communication channels. They must be shared between Max objects and Cocoa project. Max ¡û Cocoa Max ¡ú Cocoa 9
How to Use #2 3. Open Cocoa_SR_Test folder and include Cocoa_SR_Test.h/ m in your own Cocoa Project. 4. Set the same Channel Names #define CH_NAME_FROM_COCOA @quot;FROM_Cocoaquot; #define CH_NAME_TO_COCOA @quot;TO_Cocoaquot; 5. Use -sendString: -sendFloat:/- sendInteger methods to send. 10
Sending from Cocoa ? Use -send**: methods. - (void) sendString: (NSString *) str; - (void) sendFloat: (float) number; - (void) sendInteger: (int) number; 11
Receiving in Cocoa ? Customize callbackWithNotification: a callback function: - (void) - (void) callbackWithNotification:(NSNotification *)myNotification { NSDictionary *dict = [myNotification userInfo]; // a string value received NSString *string = [dict valueForKey:SHARED_DICTIONARY_KEY_FOR_ANYTHING]; if (string) { // Do something } ..... ? Dictionary Keys: SHARED_DICTIONARY_KEY_FOR_FLOAT SHARED_DICTIONARY_KEY_FOR_INT SHARED_DICTIONARY_KEY_FOR_ANYTHING 12
Usage Cases ? Phonethica Rondo / VoiceCosmos http://www.ntticc.or.jp/Archive/2006/Openspace/network/phonethica_j.html ? Matarisama Binary 1.2 (by N.Nagano) 13
Links ? Download ? www.naotokui.com/home/Downloads.html 14

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Yet Another Max/MSP-Cocoa Communication

  • 1. Yet Another Max/MSP - Cocoa Integration cocoa-send / cocoa-receive external objects Nao Tokui 1
  • 2. Why Integrate? ? Max/MSP ¡ð Useful for Audio / MIDI / Images .... !! Scalability ¡Á Hard to manage big data set. 2
  • 3. Why Integrate? ? Cocoa - Native OS X Environment ¡ð Lots of useful frameworks and easy-to-use tools for them. ? Frameworks - CoreData, Bonjour, QuartzComposer... ? Tool - Xcode, InterfaceBuilder... ¡Á Audio / MIDI API is very very complicated. ? Core Audio / Core MIDI / Quick Time 3
  • 4. Max/MSP Cocoa Bonjour Audio CoreData MIDI OpenGL 4
  • 5. Conventional Ways ? MIDI? ? CoreMIDI - Simply Overkill! ? Open Sound Control ? Very ?exible, but clumsy implementation ? Not easy to use in Cocoa 5
  • 6. NE W cocoa_send / receive external object 6
  • 7. Features ¡ð Simple to implement and Just works! ¡ð No need to ¡°connect¡± explicitly (Always Connected!!) ¡Á Limited to local use OK NG! Cocoa Max Cocoa Max http://commons.wikimedia.org/w/index.php?title=Image:MacBook_Pro_transparency.png 7
  • 8. Technical Details ? cocoa_send/receive use OS X¡¯s Inter- Application Communication called ¡°Distributed Noti?cations¡± ? eg.) Preference Pane ? http://developer.apple.com/documentation/UserExperience/Conceptual/ PreferencePanes/Tasks/Communication.html 8
  • 9. How to Use #1 1. Download cocoa_send/receive objects and sample application from www.naotokui.com 2. Set ¡°Channel Names¡± ? These names will be used to identify communication channels. They must be shared between Max objects and Cocoa project. Max ¡û Cocoa Max ¡ú Cocoa 9
  • 10. How to Use #2 3. Open Cocoa_SR_Test folder and include Cocoa_SR_Test.h/ m in your own Cocoa Project. 4. Set the same Channel Names #define CH_NAME_FROM_COCOA @quot;FROM_Cocoaquot; #define CH_NAME_TO_COCOA @quot;TO_Cocoaquot; 5. Use -sendString: -sendFloat:/- sendInteger methods to send. 10
  • 11. Sending from Cocoa ? Use -send**: methods. - (void) sendString: (NSString *) str; - (void) sendFloat: (float) number; - (void) sendInteger: (int) number; 11
  • 12. Receiving in Cocoa ? Customize callbackWithNotification: a callback function: - (void) - (void) callbackWithNotification:(NSNotification *)myNotification { NSDictionary *dict = [myNotification userInfo]; // a string value received NSString *string = [dict valueForKey:SHARED_DICTIONARY_KEY_FOR_ANYTHING]; if (string) { // Do something } ..... ? Dictionary Keys: SHARED_DICTIONARY_KEY_FOR_FLOAT SHARED_DICTIONARY_KEY_FOR_INT SHARED_DICTIONARY_KEY_FOR_ANYTHING 12
  • 13. Usage Cases ? Phonethica Rondo / VoiceCosmos http://www.ntticc.or.jp/Archive/2006/Openspace/network/phonethica_j.html ? Matarisama Binary 1.2 (by N.Nagano) 13
  • 14. Links ? Download ? www.naotokui.com/home/Downloads.html 14