668 lines
25 KiB
C++
668 lines
25 KiB
C++
/*
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File: AudioFileObject.h
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Abstract: Part of CoreAudio Utility Classes
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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#ifndef _AudioFileObject_H_
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#define _AudioFileObject_H_
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#include <TargetConditionals.h>
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#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
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#include <CoreAudio/CoreAudioTypes.h>
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#include <AudioToolbox/AudioFile.h>
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#include <AudioToolbox/AudioFormat.h>
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#else
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#include "CoreAudioTypes.h"
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#include "AudioFile.h"
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#include "AudioFormat.h"
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#endif
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#include "CompressedPacketTable.h"
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#include "CACFDictionary.h"
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#include "DataSource.h"
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#include <vector>
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#include <fcntl.h>
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#if TARGET_OS_WIN32
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#include <io.h>
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#endif
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/*
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These are structs defined in 10.5. They are included here for compatibility with sources
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*/
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#if COREAUDIOTYPES_VERSION < 1050
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struct AudioFormatListItem
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{
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AudioStreamBasicDescription mASBD;
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AudioChannelLayoutTag mChannelLayoutTag;
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};
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typedef struct AudioFormatListItem AudioFormatListItem;
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struct AudioFormatInfo
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{
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AudioStreamBasicDescription mASBD;
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const void* mMagicCookie;
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UInt32 mMagicCookieSize;
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};
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typedef struct AudioFormatInfo AudioFormatInfo;
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enum {
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kAudioFormatProperty_FormatList = 'flst',
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// Returns a list of AudioFormatListItem structs describing the audio formats contained within the compressed bit stream
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// as described by the magic cookie.
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// The specifier is an AudioFormatInfo struct. At a minimum formatID member of the ASBD struct must filled in. Other fields
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// may be filled in.
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kAudioFormatProperty_OutputFormatList = 'ofls',
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// Returns a list of AudioFormatListItem structs describing the audio formats which may be obtained by decoding the format
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// described by the specifier.
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// The specifier is an AudioFormatInfo struct. At a minimum formatID member of the ASBD struct must filled in. Other fields
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// may be filled in. If there is no magic cookie, then the number of channels and sample rate should be filled in.
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};
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enum {
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kAudioFilePropertyPacketSizeUpperBound = 'pkub',
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kAudioFilePropertyFormatList = 'flst',
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kAudioFilePropertyEstimatedDuration = 'edur',
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kAudioFilePropertyBitRate = 'brat'
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};
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enum {
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kAudioFileCreateURLSelect = 0x0019,
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kAudioFileOpenURLSelect = 0x001A,
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kAudioFileFileDataIsThisFormatSelect = 0x001B
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};
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#endif
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enum {
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kTEMPAudioFilePropertySoundCheckDictionary = 'scdc',
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kTEMPAudioFilePropertyLoudnessInfo = 'loud',
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kTEMPAudioFilePropertyGenerateLoudnessInfo = 'glou'
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};
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const UInt32 kCopySoundDataBufferSize = 1024 * 1024;
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// some files encode these as upper case
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enum {
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kUpperCase_IMACompression = 'IMA4', /*IMA 4:1*/
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kUpperCase_ULawCompression = 'ULAW', /*<2A>Law 2:1*/
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kUpperCase_ALawCompression = 'ALAW', /*aLaw 2:1*/
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kUpperCase_Float32 = 'FL32',
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kUpperCase_Float64 = 'FL64'
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};
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enum
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{
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// in what header is this defined? what is it?
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kGSM = 'agsm',
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kUpperCase_GSM = 'GSM '
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};
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#define kPackedBESInt (kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsBigEndian | kLinearPCMFormatFlagIsPacked)
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#define kPackedLESInt (kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked)
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#define kPackedBEFloat (kLinearPCMFormatFlagIsFloat | kLinearPCMFormatFlagIsBigEndian | kLinearPCMFormatFlagIsPacked)
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#define kPackedLEFloat (kLinearPCMFormatFlagIsFloat | kLinearPCMFormatFlagIsPacked)
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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inline int TransformPerm_FS_O (SInt8 inPerm)
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{
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switch (inPerm) {
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case kAudioFileReadPermission: return O_RDONLY;
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case kAudioFileWritePermission: return O_WRONLY;
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case kAudioFileReadWritePermission: return O_RDWR;
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}
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return O_RDONLY;
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}
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#pragma mark "File Error Handling"
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#include <errno.h>
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#include <CoreAudio/CoreAudioTypes.h>
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inline OSErr AudioFileTranslateErrno(int err)
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{
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switch (err) {
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#if !TARGET_OS_WIN32
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case ENFILE:
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#endif
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case EMFILE:
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return -42 /* kAudio_TooManyFilesOpenError */;
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#if !TARGET_OS_WIN32
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case EPERM:
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case EROFS:
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#endif
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case EACCES:
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case EEXIST:
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return -54 /* kAudio_FilePermissionError */;
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#if !TARGET_OS_WIN32
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case EMLINK:
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return (OSErr)'!pth' /* kAudio_BadFilePathError */;
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case ENOTDIR:
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case ELOOP:
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#endif
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case ENOENT:
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default:
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return (OSErr)kAudioFileUnspecifiedError;
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}
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}
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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class AudioFileObject
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{
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protected:
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private:
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SInt64 mNumBytes; // total bytes of audio data in the audio file
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SInt64 mNumPackets; // total frames of audio data in the audio file
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AudioStreamBasicDescription mDataFormat; // format of the audio data
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SInt64 mDataOffset; // position if the file where audio data begins
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UInt32 mIsOptimized; // 1 if there is nothing in the file following the audio data, 0 if there is
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UInt32 mFileType; // file type of the audio file (i.e. AIFF, WAVE, etc.)
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CFURLRef mFileRef; // URL of the file passed to AudioFileOpen or AudioFileCreate
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int mFileD; // Ref num of the file after opening within Audio File
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SInt8 mPermissions; // file permissions indicated by the caller, passed by AudioFileOpen or set with SetProperty function
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Boolean mIsInitialized; // has the AudioFileObject for this file been intialized?
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DataSource *mDataSource;
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UInt32 mMaximumPacketSize;
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CompressedPacketTable *mPacketTable;
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UInt32 mDeferSizeUpdates;
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Boolean mNeedsSizeUpdate;
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Boolean mFirstSetFormat;
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Boolean mAlignDataWithFillerChunks;
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public:
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AudioFileObject (UInt32 inFileType)
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: mNumBytes(0),
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mNumPackets(0),
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mDataOffset(0),
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mIsOptimized(1),
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mFileType(inFileType),
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mFileRef(NULL),
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mFileD(-1),
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mPermissions(0),
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mIsInitialized (false),
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mDataSource(0),
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mMaximumPacketSize(0),
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mPacketTable(NULL),
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mDeferSizeUpdates(1),
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mNeedsSizeUpdate(false),
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mFirstSetFormat(true),
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mAlignDataWithFillerChunks(true)
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{
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memset(&mDataFormat, 0, sizeof(mDataFormat));
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}
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virtual ~AudioFileObject();
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/* Public API Function Implementation */
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// The DoSomething() versions of these functions are wrappers that perform a standard prologue.
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// The Something() methods are those which should be overridden in the subclasses.
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OSStatus DoCreate( CFURLRef inFileRef,
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const AudioStreamBasicDescription *inFormat,
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UInt32 inFlags);
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virtual OSStatus Create( CFURLRef inFileRef,
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const AudioStreamBasicDescription *inFormat);
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OSStatus DoOpen( CFURLRef inFileRef,
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SInt8 inPermissions,
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int inFD);
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virtual OSStatus Open( CFURLRef inFileRef,
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SInt8 inPermissions,
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int inFD);
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OSStatus DoOpenWithCallbacks(
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void * inRefCon,
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AudioFile_ReadProc inReadFunc,
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AudioFile_WriteProc inWriteFunc,
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AudioFile_GetSizeProc inGetSizeFunc,
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AudioFile_SetSizeProc inSetSizeFunc);
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OSStatus DoInitialize( CFURLRef inFileRef,
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const AudioStreamBasicDescription *inFormat,
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UInt32 inFlags);
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virtual OSStatus Initialize( CFURLRef inFileRef,
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const AudioStreamBasicDescription *inFormat,
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UInt32 inFlags);
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OSStatus DoInitializeWithCallbacks(
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void * inRefCon,
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AudioFile_ReadProc inReadFunc,
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AudioFile_WriteProc inWriteFunc,
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AudioFile_GetSizeProc inGetSizeFunc,
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AudioFile_SetSizeProc inSetSizeFunc,
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UInt32 inFileType,
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const AudioStreamBasicDescription *inFormat,
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UInt32 inFlags);
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virtual OSStatus OpenFromDataSource(void);
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virtual OSStatus InitializeDataSource(const AudioStreamBasicDescription *inFormat, UInt32 inFlags);
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OSStatus DoClose();
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virtual OSStatus Close();
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OSStatus DoOptimize();
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virtual OSStatus Optimize();
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virtual OSStatus ReadBytes( Boolean inUseCache,
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SInt64 inStartingByte,
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UInt32 *ioNumBytes,
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void *outBuffer);
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virtual OSStatus WriteBytes( Boolean inUseCache,
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SInt64 inStartingByte,
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UInt32 *ioNumBytes,
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const void *inBuffer);
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virtual OSStatus ReadPackets( Boolean inUseCache,
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UInt32 *outNumBytes,
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AudioStreamPacketDescription *outPacketDescriptions,
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SInt64 inStartingPacket,
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UInt32 *ioNumPackets,
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void *outBuffer);
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virtual OSStatus ReadPacketData(
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Boolean inUseCache,
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UInt32 *ioNumBytes,
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AudioStreamPacketDescription *outPacketDescriptions,
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SInt64 inStartingPacket,
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UInt32 *ioNumPackets,
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void *outBuffer);
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virtual OSStatus ReadPacketDataVBR(
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Boolean inUseCache,
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UInt32 *ioNumBytes,
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AudioStreamPacketDescription *outPacketDescriptions,
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SInt64 inStartingPacket,
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UInt32 *ioNumPackets,
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void *outBuffer);
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virtual OSStatus HowManyPacketsCanBeReadIntoBuffer(UInt32* ioNumBytes, SInt64 inStartingPacket, UInt32 *ioNumPackets);
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virtual OSStatus ReadPacketDataVBR_InTable(
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Boolean inUseCache,
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UInt32 *ioNumBytes,
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AudioStreamPacketDescription *outPacketDescriptions,
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SInt64 inStartingPacket,
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UInt32 *ioNumPackets,
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void *outBuffer);
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virtual OSStatus WritePackets( Boolean inUseCache,
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UInt32 inNumBytes,
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const AudioStreamPacketDescription *inPacketDescriptions,
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SInt64 inStartingPacket,
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UInt32 *ioNumPackets,
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const void *inBuffer);
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/* Property Support */
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virtual OSStatus GetPropertyInfo (
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AudioFilePropertyID inPropertyID,
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UInt32 *outDataSize,
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UInt32 *isWritable);
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virtual OSStatus GetProperty ( AudioFilePropertyID inPropertyID,
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UInt32 *ioDataSize,
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void *ioPropertyData);
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virtual OSStatus SetProperty ( AudioFilePropertyID inPropertyID,
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UInt32 inDataSize,
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const void *inPropertyData);
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UInt32 GetFileType() const { return mFileType; }
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void SetFileType(UInt32 inFileType) { mFileType = inFileType; }
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// this will set the format in memory only.
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virtual OSStatus SetDataFormat(const AudioStreamBasicDescription* inStreamFormat);
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// this will update the format info on disk and in memory.
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virtual OSStatus UpdateDataFormat(const AudioStreamBasicDescription* inStreamFormat);
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const UInt32 GetBytesPerPacket() const { return mDataFormat.mBytesPerPacket; }
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const AudioStreamBasicDescription &GetDataFormat() const { return mDataFormat; }
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virtual OSStatus GetFormatListInfo( UInt32 &outDataSize,
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UInt32 &outWritable);
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virtual OSStatus GetFormatList( UInt32 &ioDataSize,
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AudioFormatListItem *ioPropertyData);
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virtual OSStatus SetFormatList( UInt32 inDataSize,
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const AudioFormatListItem *inPropertyData);
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virtual OSStatus UpdateSize() { return noErr; }
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UInt32 DeferSizeUpdates() { return mDeferSizeUpdates; }
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void SetDeferSizeUpdates(UInt32 inFlag) { mDeferSizeUpdates = inFlag; }
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OSStatus UpdateSizeIfNeeded();
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OSStatus SizeChanged();
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Boolean IsOptimized() const { return mIsOptimized != 0; }
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void SetIsOptimized(Boolean inIsOptimized) { mIsOptimized = inIsOptimized ? 1 : 0; }
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Boolean AlignDataWithFillerChunks() const { return mAlignDataWithFillerChunks; }
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virtual SInt64 GetNumBytes() { return mNumBytes; }
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virtual void SetNumBytes(SInt64 inNumBytes) { mNumBytes = inNumBytes; }
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// this will update the header size info on disk
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OSStatus UpdateNumBytes(SInt64 inNumBytes);
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virtual SInt64 GetNumPackets(){ return mNumPackets; }
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virtual void SetNumPackets(SInt64 inNumPackets) { mNumPackets = inNumPackets; }
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// this will update the header size info on disk
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OSStatus UpdateNumPackets(SInt64 inNumPackets);
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virtual OSStatus PacketToFrame(SInt64 inPacket, SInt64& outFirstFrameInPacket);
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virtual OSStatus FrameToPacket(SInt64 inFrame, SInt64& outPacket, UInt32& outFrameOffsetInPacket);
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virtual OSStatus PacketToByte(AudioBytePacketTranslation* abpt);
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virtual OSStatus ByteToPacket(AudioBytePacketTranslation* abpt);
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virtual OSStatus GetBitRate( UInt32 *outBitRate);
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virtual OSStatus GetMagicCookieDataSize( UInt32 *outDataSize,
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UInt32 *isWritable);
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virtual OSStatus GetMagicCookieData( UInt32 *ioDataSize,
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void *ioPropertyData);
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virtual OSStatus SetMagicCookieData( UInt32 inDataSize,
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const void *inPropertyData);
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virtual OSStatus GetMarkerListSize( UInt32 *outDataSize,
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UInt32 *isWritable);
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virtual OSStatus GetMarkerList( UInt32 *ioDataSize,
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AudioFileMarkerList *ioMarkerList);
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virtual OSStatus SetMarkerList( UInt32 inDataSize,
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const AudioFileMarkerList *inMarkerList);
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virtual OSStatus GetRegionListSize( UInt32 *outDataSize,
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UInt32 *isWritable);
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virtual OSStatus GetRegionList( UInt32 *ioDataSize,
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AudioFileRegionList *ioRegionList);
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virtual OSStatus SetRegionList( UInt32 inDataSize,
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const AudioFileRegionList *inRegionList);
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virtual OSStatus GetChannelLayoutSize( UInt32 *outDataSize,
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UInt32 *isWritable);
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virtual OSStatus GetChannelLayout( UInt32 *ioDataSize,
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AudioChannelLayout *ioChannelLayout);
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virtual OSStatus SetChannelLayout( UInt32 inDataSize,
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const AudioChannelLayout *inChannelLayout);
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virtual OSStatus GetInfoDictionarySize( UInt32 *outDataSize,
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UInt32 *isWritable);
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virtual OSStatus GetInfoDictionary( CACFDictionary *infoDict);
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virtual OSStatus SetInfoDictionary( CACFDictionary *infoDict);
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virtual OSStatus GetSoundCheckDictionarySize( UInt32 *outDataSize,
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UInt32 *isWritable) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GetSoundCheckDictionary( CACFDictionary *infoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus SetSoundCheckDictionary( CACFDictionary *infoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GetLoudnessInfo( CACFDictionary *infoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GetSoundCheckDictionaryFromLoudnessInfo(CACFDictionary* outInfoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GetLoudnessInfoFromSoundCheckDictionary(CACFDictionary* outInfoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus SetLoudnessInfo( CACFDictionary *infoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GetLoudnessInfoSize( UInt32 *outDataSize,
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UInt32 *isWritable) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GenerateLoudnessInfo( CACFDictionary *infoDict) { return kAudioFileUnsupportedPropertyError; }
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virtual OSStatus GetEstimatedDuration( Float64* duration);
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virtual OSStatus CountUserData( UInt32 inUserDataID,
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UInt32 *outNumberItems);
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virtual OSStatus GetUserDataSize( UInt32 inUserDataID,
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UInt32 inIndex,
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UInt32 *outDataSize);
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virtual OSStatus GetUserData( UInt32 inUserDataID,
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UInt32 inIndex,
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UInt32 *ioDataSize,
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void *ioUserData);
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virtual OSStatus SetUserData( UInt32 inUserDataID,
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UInt32 inIndex,
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UInt32 inDataSize,
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const void *inUserData);
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virtual OSStatus RemoveUserData( UInt32 inUserDataID,
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UInt32 inIndex);
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virtual OSStatus GetLyrics(CFStringRef *outLyrics) { return kAudioFileUnsupportedPropertyError; }
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Boolean CanRead() const { return mPermissions & kAudioFileReadPermission; }
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Boolean CanWrite() const { return mPermissions & kAudioFileWritePermission; }
|
||
|
||
void SetPermissions(SInt8 inPermissions) { mPermissions = inPermissions; }
|
||
|
||
/* Other Helper Methods: (some may not be necessary depending on how things are refactored) */
|
||
|
||
OSStatus OpenFile(SInt8 inPermissions, int inFD);
|
||
|
||
OSStatus CreateDataFile (CFURLRef inFileRef, int &outFileD);
|
||
|
||
OSStatus AddDurationToInfoDictionary(CACFDictionary *infoDict, Float64 &inDuration);
|
||
|
||
virtual Boolean IsDataFormatSupported(const AudioStreamBasicDescription *inFormat) = 0;
|
||
virtual Boolean IsDataFormatValid(const AudioStreamBasicDescription *inFormat);
|
||
|
||
virtual OSStatus IsValidFilePosition(SInt64 /*position*/) { return noErr; }
|
||
|
||
OSStatus MoveData(SInt64 fromPos, SInt64 toPos, SInt64 size);
|
||
|
||
/* Accessors: */
|
||
Boolean IsInitialized() const { return mIsInitialized; }
|
||
void SetInitialized(Boolean inFlag) { mIsInitialized = inFlag; }
|
||
|
||
DataSource* GetDataSource() const { return mDataSource; }
|
||
void SetDataSource(DataSource *inDataSource);
|
||
|
||
void SetURL (CFURLRef inURL);
|
||
|
||
virtual UInt32 GetMaximumPacketSize() { return mMaximumPacketSize; }
|
||
virtual UInt32 FindMaximumPacketSize() { return mMaximumPacketSize; }
|
||
virtual void SetMaximumPacketSize(const UInt32 inPacketSize) { mMaximumPacketSize = inPacketSize; }
|
||
|
||
virtual UInt32 GetPacketSizeUpperBound() { return GetMaximumPacketSize (); }
|
||
|
||
SInt64 GetDataOffset() const { return mDataOffset; }
|
||
void SetDataOffset(SInt64 inOffset) { mDataOffset = inOffset; }
|
||
|
||
// I like this idiom better than DoesPacketTableExist+NewPacketTable:
|
||
CompressedPacketTable* GetPacketTable(Boolean inCreateIt = false)
|
||
{
|
||
if (!mPacketTable && inCreateIt)
|
||
mPacketTable = new CompressedPacketTable(mDataFormat.mFramesPerPacket);
|
||
return mPacketTable;
|
||
}
|
||
void ClearPacketTable()
|
||
{
|
||
DeletePacketTable();
|
||
GetPacketTable(true);
|
||
}
|
||
|
||
virtual OSStatus ScanForPackets(SInt64 inToPacketCount, DataSource* inDataSrc = NULL, bool fullyParsedIfEndOfDataReached = true)
|
||
{
|
||
// In formats that read packets lazily, this will be overridden to scan for packets up to the index.
|
||
if (inToPacketCount > GetNumPackets())
|
||
return kAudioFileEndOfFileError;
|
||
|
||
return noErr;
|
||
}
|
||
|
||
void AppendPacket(const AudioStreamPacketDescription &inPacket)
|
||
{
|
||
CompressedPacketTable* packetTable = GetPacketTable(true);
|
||
UInt32 numFramesInPacket = mDataFormat.mFramesPerPacket ? mDataFormat.mFramesPerPacket : inPacket.mVariableFramesInPacket;
|
||
|
||
AudioStreamPacketDescriptionExtended pext;
|
||
memset(&pext, 0, sizeof(pext));
|
||
pext.mStartOffset = inPacket.mStartOffset;
|
||
pext.mDataByteSize = inPacket.mDataByteSize;
|
||
pext.mVariableFramesInPacket = inPacket.mVariableFramesInPacket;
|
||
pext.mFrameOffset = numFramesInPacket + (packetTable->size() ? packetTable->back().mFrameOffset : 0);
|
||
|
||
packetTable->push_back(pext);
|
||
if (inPacket.mDataByteSize > mMaximumPacketSize)
|
||
mMaximumPacketSize = inPacket.mDataByteSize;
|
||
}
|
||
void DeletePacketTable() { delete mPacketTable; mPacketTable = NULL;}
|
||
SInt64 GetPacketTableSize() { return mPacketTable ? mPacketTable->size() : 0; }
|
||
OSStatus GetPacketDescriptions(UInt32 inStartingPacket, UInt32 *ioDataSize, AudioStreamPacketDescription *outPacketDescriptions)
|
||
{
|
||
if (outPacketDescriptions == NULL) return kAudioFileUnspecifiedError;
|
||
if (mPacketTable)
|
||
{
|
||
// only get as many packet descriptions as can fit in outPacketDescriptions
|
||
UInt32 count = *ioDataSize / sizeof(AudioStreamPacketDescription);
|
||
if (count + inStartingPacket > GetPacketTableSize())
|
||
count = (UInt32)(GetPacketTableSize() - inStartingPacket);
|
||
|
||
*ioDataSize = 0;
|
||
for (UInt32 i = inStartingPacket; i < (count + inStartingPacket); i++)
|
||
{
|
||
AudioStreamPacketDescription curPacket = (*mPacketTable)[i];
|
||
outPacketDescriptions[i].mStartOffset = curPacket.mStartOffset - GetDataOffset();
|
||
outPacketDescriptions[i].mVariableFramesInPacket = curPacket.mVariableFramesInPacket;
|
||
outPacketDescriptions[i].mDataByteSize = curPacket.mDataByteSize;
|
||
*ioDataSize += sizeof(AudioStreamPacketDescription);
|
||
}
|
||
}
|
||
else
|
||
*ioDataSize = 0;
|
||
|
||
return noErr;
|
||
}
|
||
|
||
#if DEBUG
|
||
void DumpPacketTable()
|
||
{
|
||
if (mPacketTable) {
|
||
SInt64 size = mPacketTable->size();
|
||
printf("PacketTable size %d\n", (int)size);
|
||
for (SInt64 i = 0; i < size; i++) {
|
||
AudioStreamPacketDescription curPacket = (*mPacketTable)[i];
|
||
printf("dpkt %5qd %8qd %5d %5d\n", i, curPacket.mStartOffset, (int)curPacket.mDataByteSize, (int)curPacket.mVariableFramesInPacket);
|
||
}
|
||
}
|
||
}
|
||
#endif
|
||
|
||
Boolean GetNeedsSizeUpdate() const { return mNeedsSizeUpdate; }
|
||
void SetNeedsSizeUpdate(Boolean inNeedsSizeUpdate) { mNeedsSizeUpdate = inNeedsSizeUpdate; }
|
||
|
||
CFURLRef GetURL () const { return mFileRef; }
|
||
|
||
virtual OSStatus GetSourceBitDepth(SInt32& outValue) { outValue = 0; return kAudioFileUnsupportedPropertyError; }
|
||
virtual OSStatus SetSourceBitDepth(SInt32 inValue) { return kAudioFileUnsupportedPropertyError; }
|
||
|
||
virtual OSStatus GetAlbumArtwork(CFDataRef& outValue) { outValue = NULL; return kAudioFileUnsupportedPropertyError; }
|
||
virtual OSStatus SetAlbumArtwork(CFDataRef inValue){ return kAudioFileUnsupportedPropertyError; }
|
||
|
||
private:
|
||
|
||
void SetAlignDataWithFillerChunks(Boolean inFlag) { mAlignDataWithFillerChunks = inFlag; }
|
||
|
||
OSStatus ValidateFormatAndData();
|
||
|
||
/* debug */
|
||
// virtual void PrintFile (FILE* inFile, const char *indent) = 0;
|
||
};
|
||
|
||
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
||
inline Boolean cfstrcmpi(CFStringRef a, CFStringRef b)
|
||
{
|
||
// case insensitive CFString compare
|
||
return CFStringCompare(a, b, kCFCompareCaseInsensitive) == kCFCompareEqualTo;
|
||
}
|
||
|
||
CFBundleRef GetAudioToolboxBundle();
|
||
|
||
|
||
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
||
#endif
|