150 lines
5.2 KiB
C++
150 lines
5.2 KiB
C++
/*
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File: CAAudioFileFormats.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 __CAAudioFileFormats_h__
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#define __CAAudioFileFormats_h__
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#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
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#include <AudioToolbox/AudioToolbox.h>
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#else
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#include <AudioToolbox.h>
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#endif
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#include "CAStreamBasicDescription.h"
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class CAAudioFileFormats {
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public:
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enum { noErr = 0 };
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struct DataFormatInfo {
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DataFormatInfo() : mVariants(NULL) { }
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~DataFormatInfo() { delete[] mVariants; }
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UInt32 mFormatID;
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int mNumVariants;
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AudioStreamBasicDescription * mVariants;
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bool mReadable;
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bool mWritable;
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bool mEitherEndianPCM;
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#if DEBUG
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void DebugPrint();
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#endif
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};
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struct FileFormatInfo {
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FileFormatInfo() : mFileTypeName(NULL), mExtensions(NULL), mDataFormats(NULL) { }
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~FileFormatInfo() {
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delete[] mDataFormats;
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if (mFileTypeName)
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CFRelease(mFileTypeName);
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if (mExtensions)
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CFRelease(mExtensions);
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}
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AudioFileTypeID mFileTypeID;
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CFStringRef mFileTypeName;
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CFArrayRef mExtensions;
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int mNumDataFormats;
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DataFormatInfo * mDataFormats; // NULL until loaded!
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int NumberOfExtensions() { return static_cast<int>(mExtensions ? CFArrayGetCount(mExtensions) : 0); }
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char * GetExtension(int index, char *buf, int buflen) {
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CFStringRef cfext = (CFStringRef)CFArrayGetValueAtIndex(mExtensions, index);
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CFStringGetCString(cfext, buf, buflen, kCFStringEncodingUTF8);
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return buf;
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}
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bool MatchExtension(CFStringRef testExt) { // testExt should not include "."
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CFIndex n = NumberOfExtensions();
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for (CFIndex i = 0; i < n; ++i) {
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CFStringRef ext = (CFStringRef)CFArrayGetValueAtIndex(mExtensions, i);
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if (CFStringCompare(ext, testExt, kCFCompareCaseInsensitive) == kCFCompareEqualTo)
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return true;
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}
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return false;
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}
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bool AnyWritableFormats();
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void LoadDataFormats();
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#if DEBUG
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void DebugPrint();
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#endif
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};
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private: // use Instance()
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CAAudioFileFormats(bool loadDataFormats);
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~CAAudioFileFormats();
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public:
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bool InferDataFormatFromFileFormat(AudioFileTypeID filetype, CAStreamBasicDescription &fmt);
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bool InferFileFormatFromFilename(const char *filename, AudioFileTypeID &filetype);
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bool InferFileFormatFromFilename(CFStringRef filename, AudioFileTypeID &filetype);
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bool InferFileFormatFromDataFormat(const CAStreamBasicDescription &fmt, AudioFileTypeID &filetype);
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bool IsKnownDataFormat(UInt32 dataFormat);
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#if DEBUG
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void DebugPrint();
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#endif
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int mNumFileFormats;
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FileFormatInfo * mFileFormats;
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FileFormatInfo * FindFileFormat(UInt32 formatID);
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static CAAudioFileFormats * Instance(bool loadDataFormats=true);
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private:
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static CAAudioFileFormats * sInstance;
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};
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char * OSTypeToStr(char *buf, size_t bufsize, UInt32 t);
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int StrToOSType(const char *str, UInt32 &t);
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#endif // __CAAudioFileFormats_h__
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