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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@30083 72102866-910b-0410-8b05-ffd578937521
99 lines
2.7 KiB
Objective-C
99 lines
2.7 KiB
Objective-C
/*
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GSSoundSource.h
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Load and read sound data.
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Copyright (C) 2009 Free Software Foundation, Inc.
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Written by: Stefan Bidigaray <stefanbidi@gmail.com>
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Date: Jun 2009
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This file is part of the GNUstep GUI Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; see the file COPYING.LIB.
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If not, see <http://www.gnu.org/licenses/> or write to the
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Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef _GNUstep_H_GSSoundSource
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#define _GNUstep_H_GSSoundSource
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#import <Foundation/NSByteOrder.h>
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#import <Foundation/NSObject.h>
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@class NSArray;
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enum
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{
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GSSoundFormatUnknown = 0x0000,
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GSSoundFormatPCMS8 = 0x0001,
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GSSoundFormatPCM16 = 0x0002,
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GSSoundFormatPCM24 = 0x0003,
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GSSoundFormatPCM32 = 0x0004,
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GSSoundFormatPCMU8 = 0x0005,
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GSSoundFormatFloat32 = 0x0006,
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GSSoundFormatFloat64 = 0x0007,
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GSSoundFormatULaw = 0x0010,
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GSSoundFormatALaw = 0x0011
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};
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@protocol GSSoundSource <NSObject>
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/** Returns an array of the file types supported by the class.
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*/
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+ (NSArray *)soundUnfilteredFileTypes;
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/** Returns an array of UTIs identifying the file types the class understands.
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*/
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+ (NSArray *)soundUnfilteredTypes;
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/** Returns YES if the class can understand data and NO otherwise.
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*/
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+ (BOOL)canInitWithData: (NSData *)data;
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/** <init />
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* Initilizes the reciever for output.
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*/
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- (id)initWithData: (NSData *)data;
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/** Reads data provided in -initWithData:. Parameter bytes must be big enough
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* to hold length bytes.
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*/
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- (NSUInteger)readBytes: (void *)bytes length: (NSUInteger)length;
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/** Returns the duration, in seconds. Equivalent to [NSSound-duration].
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*/
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- (NSTimeInterval)duration;
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/** Called by [NSSound-setCurrentTime:].
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*/
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- (void)setCurrentTime: (NSTimeInterval)currentTime;
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/** Called by [NSSound-currentTime].
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*/
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- (NSTimeInterval)currentTime;
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/** Returns encoding of the audio data.
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*/
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- (int)encoding;
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/** Returns the number of channels.
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*/
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- (NSUInteger)channelCount;
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/** Returns the receiver's sample rate (ie 44100, 8000, etc).
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*/
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- (NSUInteger)sampleRate;
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/** Returns the byte order of the audio data.
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*/
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- (NSByteOrder)byteOrder;
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@end
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#endif // _GNUstep_H_GSSoundSource
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