Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
Relevant replacement documents include:
Sources/Classes/SeqGrab/SGAudio.h
/* Copyright: © Copyright 2005 Apple Computer, Inc. All rights reserved. |
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. |
("Apple") in consideration of your agreement to the following terms, and your |
use, installation, modification or redistribution of this Apple software |
constitutes acceptance of these terms. If you do not agree with these terms, |
please do not use, install, modify or redistribute this Apple software. |
In consideration of your agreement to abide by the following terms, and subject |
to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs |
copyrights in this original Apple software (the "Apple Software"), to use, |
reproduce, modify and redistribute the Apple Software, with or without |
modifications, in source and/or binary forms; provided that if you redistribute |
the Apple Software in its entirety and without modifications, you must retain |
this notice and the following text and disclaimers in all such redistributions of |
the Apple Software. Neither the name, trademarks, service marks or logos of |
Apple Computer, Inc. may be used to endorse or promote products derived from the |
Apple Software without specific prior written permission from Apple. Except as |
expressly stated in this notice, no other rights or licenses, express or implied, |
are granted by Apple herein, including but not limited to any patent rights that |
may be infringed by your derivative works or by other works in which the Apple |
Software may be incorporated. |
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO |
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED |
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN |
COMBINATION WITH YOUR PRODUCTS. |
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR |
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION |
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT |
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN |
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#import <Cocoa/Cocoa.h> |
#import <QuickTime/QuickTimeComponents.h> |
#import <AudioUnit/AudioUnit.h> |
#import "SGChan.h" |
/*___________________________________________________________________________________________ |
*/ |
// notifications |
extern NSString * SGAudioDeviceListChangedNotification; |
extern NSString * SGAudioRecordDeviceDiedNotification; |
extern NSString * SGAudioRecordDeviceHoggedChangedNotification; |
extern NSString * SGAudioRecordDeviceInUseChangedNotification; |
extern NSString * SGAudioRecordDeviceStreamFormatChangedNotification; |
extern NSString * SGAudioRecordDeviceStreamFormatListChangedNotification; |
extern NSString * SGAudioRecordDeviceInputSelectionNotification; |
extern NSString * SGAudioRecordDeviceInputListChangedNotification; |
extern NSString * SGAudioPreviewDeviceDiedNotification; |
extern NSString * SGAudioPreviewDeviceHoggedChangedNotification; |
extern NSString * SGAudioPreviewDeviceInUseChangedNotification; |
extern NSString * SGAudioPreviewDeviceStreamFormatChangedNotification; |
extern NSString * SGAudioPreviewDeviceStreamFormatListChangedNotification; |
extern NSString * SGAudioPreviewDeviceOutputSelectionChangedNotification; |
extern NSString * SGAudioPreviewDeviceOutputListChangedNotification; |
extern NSString * SGAudioOutputStreamFormatChangedNotification; |
/*___________________________________________________________________________________________ |
*/ |
#define kMaxFXUnits 6 |
// this is a Cocoa wrapper for an SGAudioMediaType SGChannel |
@interface SGAudio : SGChan { |
SInt32 mPullUnitIndex; |
AudioBufferList * mPullBuffer; |
AudioUnit mFXUnits[kMaxFXUnits]; |
UInt32 mFXUnitsCount; |
BOOL mDoInitFXUnits; |
} |
- (id)initWithSeqGrab:(SeqGrab*)sg; |
- (OSStatus)getPropertyInfoWithClass:(ComponentPropertyClass)theClass |
id:(ComponentPropertyID)theID |
type:(ComponentValueType*)type |
size:(ByteCount*)sz |
flags:(UInt32*)flags; |
- (OSStatus)getPropertyWithClass:(ComponentPropertyClass)theClass |
id:(ComponentPropertyID)theID |
size:(ByteCount)sz |
address:(ComponentValuePtr)addr |
sizeUsed:(ByteCount*)szUsed; |
- (OSStatus)setPropertyWithClass:(ComponentPropertyClass)theClass |
id:(ComponentPropertyID)theID |
size:(ByteCount)sz |
address:(ConstComponentValuePtr)addr; |
// convenience functions which use the property methods above |
- (NSArray*)deviceList; |
- (NSArray*)recordCapableDeviceList; |
- (NSArray*)previewCapableDeviceList; |
- (void)notifyOfChangeInPropClass:(ComponentPropertyClass)theClass |
id:(ComponentPropertyID)theID; |
- (OSStatus)showSettingsDialog; |
- (NSString*)summaryString; |
- (OSType)channelType; |
- (BOOL)isVideoChannel; |
- (BOOL)isAudioChannel; |
- (AudioUnit *)fxUnits; |
- (UInt32)fxUnitsCount; |
// insert point for 'aufx' audio units |
- (AudioUnit)insertAUFXUnit:(ComponentDescription *)fxUnitDesc; |
- (BOOL)removeAUFXUnit:(AudioUnit)doomedFXUnit; |
- (OSStatus)sgAudioCallbackRender: |
(SGAudioCallbackFlags *)ioFlags |
timestamp:(const AudioTimeStamp *)inTimeStamp |
numPackets:(const UInt32 *)inNumberPackets |
buffer:(const AudioBufferList *)inData |
packetDescs:(const AudioStreamPacketDescription*)inPacketDescriptions; |
- (OSStatus)fxUnitRender:(AudioUnitRenderActionFlags *)ioActionFlags |
timestamp:(const AudioTimeStamp *)inTimeStamp |
bus:(UInt32)inBusNumber |
numFrames:(UInt32)inNumberFrames |
buffer:(AudioBufferList *)ioData; |
@end |
Copyright © 2011 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2011-09-06