release notes.txt

symbian学习音乐播放的源代码

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S60 Platform: Audio Output Streaming Example v1.1

    The purpose of this application is to demonstrate the key functionalities
    of the Audio Streaming API by playing generated waveforms and pcm sound 
    data from a file.
    
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PREREQUISITES

    Symbian C++ basics
    Asynchronous services

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IMPORTANT FILES/CLASSES

    inc\wavegen_engine.h
    src\wavegen_engine.cpp 

    classes CStreamAudioEngine, 
            CMdaAudioOutputStream, 
            MMdaAudioOutputStreamCallback

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KNOWN ISSUES

    (No known issues)
    
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RUNNING THE EXAMPLE

    There are two views in the application:
    
        Generator - writing generated waveforms to audio output stream        
            - Volume, frequency, and the type of waveform can be adjusted in the
              Settings listbox while playback is in progress.
            
        Player - writing PCM data to audio output stream from a file        
            - Playback volume can be adjusted.
            
    Use navigation left/right keys to change between views. Select Start/Stop
    from the Options menu to control playback.            
     
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BUILD & INSTALLATION INSTRUCTIONS

The source code can be compiled on all S60 SDKs. Steps for building and
installing the application to a device depend on the S60 platform version:

--Mobile device (S60 3rd Edition)
    cd to /wavegen/group
    bldmake bldfiles
    abld build gcce urel
    cd to /wavegen/sis
    makesis wavegen_s60_3rd_ed.pkg
    
    Sign the SIS package 
      - See the SDK Help for information about self-signed .sis packages, or
        www.symbiansigned.com for information about Developer Certificates.

    Install the signed .sis file to a S60 3rd Edition device.
    
--Mobile device (S60 1st/2nd Edition)
    cd to /wavegen/group
    bldmake bldfiles
    abld build thumb urel
    cd to /wavegen/sis
    makesis wavegen.pkg    
    Install the SIS file to the device.
    
--Emulator (WINSCW)
    cd to /wavegen/group
    bldmake bldfiles
    abld build winscw udeb
    Start the emulator.
    
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COMPATIBILITY

    S60 3rd Edition
    S60 2nd Edition
    (S60 1st Edition)
    
    Tested on Nokia 6600, Nokia 6630, Nokia N90
    
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VERSION HISTORY

    1.1    - Application updated to support S60 3rd Edition
             (conditional compiling macros used in order to maintain backward
             source compatibility)   
           - UI changed to properly use the view architecture (2 tabbed views)
           - Added BaseConstructL() call to view constructor (CAknView-derived)
             (without this, AVKON 59 panic is raised on S60 3rd Edition)
    
    1.0    First release

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