libs/appleutility/CoreAudio105/CAAudioFile.h

   1 /*      Copyright:      � Copyright 2005 Apple Computer, Inc. All rights reserved.
   2
   3         Disclaimer:     IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.
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   5                         use, installation, modification or redistribution of this Apple software
   6                         constitutes acceptance of these terms.  If you do not agree with these terms,
   7                         please do not use, install, modify or redistribute this Apple software.
   8
   9                         In consideration of your agreement to abide by the following terms, and subject
  10                         to these terms, Apple grants you a personal, non-exclusive license, under Apple�s
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  12                         reproduce, modify and redistribute the Apple Software, with or without
  13                         modifications, in source and/or binary forms; provided that if you redistribute
  14                         the Apple Software in its entirety and without modifications, you must retain
  15                         this notice and the following text and disclaimers in all such redistributions of
  16                         the Apple Software.  Neither the name, trademarks, service marks or logos of
  17                         Apple Computer, Inc. may be used to endorse or promote products derived from the
  18                         Apple Software without specific prior written permission from Apple.  Except as
  19                         expressly stated in this notice, no other rights or licenses, express or implied,
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  24                         The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
  25                         WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
  26                         WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27                         PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
  28                         COMBINATION WITH YOUR PRODUCTS.
  29
  30                         IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
  31                         CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  32                         GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33                         ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
  34                         OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
  35                         (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
  36                         ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /*=============================================================================
  39         CAAudioFile.h
  40
  41 =============================================================================*/
  42
  43 #ifndef __CAAudioFile_h__
  44 #define __CAAudioFile_h__
  45
  46 #include <iostream>
  47 #include <AvailabilityMacros.h>
  48
  49 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
  50         #include <AudioToolbox/AudioToolbox.h>
  51 #else
  52         #include <AudioToolbox.h>
  53 #endif
  54
  55 #include "CAStreamBasicDescription.h"
  56 #include "CABufferList.h"
  57 #include "CAAudioChannelLayout.h"
  58 #include "CAXException.h"
  59 #include "CAMath.h"
  60
  61 #ifndef CAAF_USE_EXTAUDIOFILE
  62 // option: use AudioToolbox/ExtAudioFile.h? Only available on Tiger.
  63         #if MAC_OS_X_VERSION_MIN_REQUIRED <= MAC_OS_X_VERSION_10_3
  64                 // we are building software that must be deployable on Panther or earlier
  65                 #define CAAF_USE_EXTAUDIOFILE 0
  66         #else
  67                 // else we require Tiger and can use the API
  68                 #define CAAF_USE_EXTAUDIOFILE 1
  69         #endif
  70 #endif
  71
  72 #ifndef MAC_OS_X_VERSION_10_4
  73         // we have pre-Tiger headers; add our own declarations
  74         typedef UInt32 AudioFileTypeID;
  75         enum {
  76                 kExtAudioFileError_InvalidProperty                      = -66561,
  77                 kExtAudioFileError_InvalidPropertySize          = -66562,
  78                 kExtAudioFileError_NonPCMClientFormat           = -66563,
  79                 kExtAudioFileError_InvalidChannelMap            = -66564,       // number of channels doesn't match format
  80                 kExtAudioFileError_InvalidOperationOrder        = -66565,
  81                 kExtAudioFileError_InvalidDataFormat            = -66566,
  82                 kExtAudioFileError_MaxPacketSizeUnknown         = -66567,
  83                 kExtAudioFileError_InvalidSeek                          = -66568,       // writing, or offset out of bounds
  84                 kExtAudioFileError_AsyncWriteTooLarge           = -66569,
  85                 kExtAudioFileError_AsyncWriteBufferOverflow     = -66570        // an async write could not be completed in time
  86         };
  87 #else
  88         #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
  89                 #include <AudioToolbox/ExtendedAudioFile.h>
  90         #else
  91                 #include "ExtendedAudioFile.h"
  92         #endif
  93 #endif
  94
  95 // _______________________________________________________________________________________
  96 // Wrapper class for an AudioFile, supporting encode/decode to/from a PCM client format
  97 class CAAudioFile {
  98 public:
  99         // implementation-independent helpers
 100         void    Open(const char *filePath) {
 101                 FSRef fsref;
 102                 std::cerr << "Opening " << filePath << std::endl;
 103                 XThrowIfError(FSPathMakeRef((UInt8 *)filePath, &fsref, NULL), "locate audio file");
 104                 Open(fsref);
 105         }
 106
 107         bool                                                    HasConverter() const { return GetConverter() != NULL; }
 108
 109         double  GetDurationSeconds() {
 110                 double sr = GetFileDataFormat().mSampleRate;
 111                 return fnonzero(sr) ? GetNumberFrames() / sr : 0.;
 112         }
 113                                 // will be 0 if the file's frames/packet is 0 (variable)
 114                                 // or the file's sample rate is 0 (unknown)
 115
 116 #if CAAF_USE_EXTAUDIOFILE
 117 public:
 118         CAAudioFile() : mExtAF(NULL) { std::cerr << "Constructing CAAudioFile\n"; }
 119         virtual ~CAAudioFile() { std::cerr << "Destroying CAAudiofile @ " << this << std::endl; if (mExtAF) Close(); }
 120
 121         void    Open(const FSRef &fsref) {
 122                                 // open an existing file
 123                 XThrowIfError(ExtAudioFileOpen(&fsref, &mExtAF), "ExtAudioFileOpen failed");
 124         }
 125
 126         void    CreateNew(const FSRef &inParentDir, CFStringRef inFileName,     AudioFileTypeID inFileType, const AudioStreamBasicDescription &inStreamDesc, const AudioChannelLayout *inChannelLayout=NULL) {
 127                 XThrowIfError(ExtAudioFileCreateNew(&inParentDir, inFileName, inFileType, &inStreamDesc, inChannelLayout, &mExtAF), "ExtAudioFileCreateNew failed");
 128         }
 129
 130         void    Wrap(AudioFileID fileID, bool forWriting) {
 131                                 // use this to wrap an AudioFileID opened externally
 132                 XThrowIfError(ExtAudioFileWrapAudioFileID(fileID, forWriting, &mExtAF), "ExtAudioFileWrapAudioFileID failed");
 133         }
 134
 135         void    Close() {
 136                 std::cerr << "\tdisposeo of ext audio file @ " << mExtAF << std::endl;
 137                 XThrowIfError(ExtAudioFileDispose(mExtAF), "ExtAudioFileClose failed");
 138                 mExtAF = NULL;
 139         }
 140
 141         const CAStreamBasicDescription &GetFileDataFormat() {
 142                 UInt32 size = sizeof(mFileDataFormat);
 143                 XThrowIfError(ExtAudioFileGetProperty(mExtAF, kExtAudioFileProperty_FileDataFormat, &size, &mFileDataFormat), "Couldn't get file's data format");
 144                 return mFileDataFormat;
 145         }
 146
 147         const CAAudioChannelLayout &    GetFileChannelLayout() {
 148                 return FetchChannelLayout(mFileChannelLayout, kExtAudioFileProperty_FileChannelLayout);
 149         }
 150
 151         void    SetFileChannelLayout(const CAAudioChannelLayout &layout) {
 152                 XThrowIfError(ExtAudioFileSetProperty(mExtAF, kExtAudioFileProperty_FileChannelLayout, layout.Size(), &layout.Layout()), "Couldn't set file's channel layout");
 153                 mFileChannelLayout = layout;
 154         }
 155
 156         const CAStreamBasicDescription &GetClientDataFormat() {
 157                 UInt32 size = sizeof(mClientDataFormat);
 158                 XThrowIfError(ExtAudioFileGetProperty(mExtAF, kExtAudioFileProperty_ClientDataFormat, &size, &mClientDataFormat), "Couldn't get client data format");
 159                 return mClientDataFormat;
 160         }
 161
 162         const CAAudioChannelLayout &    GetClientChannelLayout() {
 163                 return FetchChannelLayout(mClientChannelLayout, kExtAudioFileProperty_ClientChannelLayout);
 164         }
 165
 166         void    SetClientFormat(const CAStreamBasicDescription &dataFormat, const CAAudioChannelLayout *layout=NULL) {
 167                 XThrowIfError(ExtAudioFileSetProperty(mExtAF, kExtAudioFileProperty_ClientDataFormat, sizeof(dataFormat), &dataFormat), "Couldn't set client format");
 168                 if (layout)
 169                         SetClientChannelLayout(*layout);
 170         }
 171
 172         void    SetClientChannelLayout(const CAAudioChannelLayout &layout) {
 173                 XThrowIfError(ExtAudioFileSetProperty(mExtAF, kExtAudioFileProperty_ClientChannelLayout, layout.Size(), &layout.Layout()), "Couldn't set client channel layout");
 174         }
 175
 176         AudioConverterRef                               GetConverter() const {
 177                 UInt32 size = sizeof(AudioConverterRef);
 178                 AudioConverterRef converter;
 179                 XThrowIfError(ExtAudioFileGetProperty(mExtAF, kExtAudioFileProperty_AudioConverter, &size, &converter), "Couldn't get file's AudioConverter");
 180                 return converter;
 181         }
 182
 183         OSStatus        SetConverterProperty(AudioConverterPropertyID inPropertyID,     UInt32 inPropertyDataSize, const void *inPropertyData, bool inCanFail=false)
 184         {
 185                 OSStatus err = AudioConverterSetProperty(GetConverter(), inPropertyID, inPropertyDataSize, inPropertyData);
 186                 if (!inCanFail)
 187                         XThrowIfError(err, "Couldn't set audio converter property");
 188                 if (!err) {
 189                         // must tell the file that we have changed the converter; a NULL converter config is sufficient
 190                         CFPropertyListRef config = NULL;
 191                         XThrowIfError(ExtAudioFileSetProperty(mExtAF, kExtAudioFileProperty_ConverterConfig, sizeof(CFPropertyListRef), &config), "couldn't signal the file that the converter has changed");
 192                 }
 193                 return err;
 194         }
 195
 196         SInt64          GetNumberFrames() {
 197                 SInt64 length;
 198                 UInt32 size = sizeof(SInt64);
 199                 XThrowIfError(ExtAudioFileGetProperty(mExtAF, kExtAudioFileProperty_FileLengthFrames, &size, &length), "Couldn't get file's length");
 200                 return length;
 201         }
 202
 203         void            SetNumberFrames(SInt64 length) {
 204                 XThrowIfError(ExtAudioFileSetProperty(mExtAF, kExtAudioFileProperty_FileLengthFrames, sizeof(SInt64), &length), "Couldn't set file's length");
 205         }
 206
 207         void            Seek(SInt64 pos) {
 208                 XThrowIfError(ExtAudioFileSeek(mExtAF, pos), "Couldn't seek in audio file");
 209         }
 210
 211         SInt64          Tell() {
 212                 SInt64 pos;
 213                 XThrowIfError(ExtAudioFileTell(mExtAF, &pos), "Couldn't get file's mark");
 214                 return pos;
 215         }
 216
 217         void            Read(UInt32 &ioFrames, AudioBufferList *ioData) {
 218                 XThrowIfError(ExtAudioFileRead(mExtAF, &ioFrames, ioData), "Couldn't read audio file");
 219         }
 220
 221         void            Write(UInt32 inFrames, const AudioBufferList *inData) {
 222                 XThrowIfError(ExtAudioFileWrite(mExtAF, inFrames, inData), "Couldn't write audio file");
 223         }
 224
 225         void            SetIOBufferSizeBytes(UInt32 bufferSizeBytes) {
 226                 XThrowIfError(ExtAudioFileSetProperty(mExtAF, kExtAudioFileProperty_IOBufferSizeBytes, sizeof(UInt32), &bufferSizeBytes), "Couldn't set audio file's I/O buffer size");
 227         }
 228
 229 private:
 230         const CAAudioChannelLayout &    FetchChannelLayout(CAAudioChannelLayout &layoutObj, ExtAudioFilePropertyID propID) {
 231                 UInt32 size;
 232                 XThrowIfError(ExtAudioFileGetPropertyInfo(mExtAF, propID, &size, NULL), "Couldn't get info about channel layout");
 233                 AudioChannelLayout *layout = (AudioChannelLayout *)malloc(size);
 234                 OSStatus err = ExtAudioFileGetProperty(mExtAF, propID, &size, layout);
 235                 if (err) {
 236                         free(layout);
 237                         XThrowIfError(err, "Couldn't get channel layout");
 238                 }
 239                 layoutObj = layout;
 240                 free(layout);
 241                 return layoutObj;
 242         }
 243
 244
 245 private:
 246         ExtAudioFileRef                         mExtAF;
 247
 248         CAStreamBasicDescription        mFileDataFormat;
 249         CAAudioChannelLayout            mFileChannelLayout;
 250
 251         CAStreamBasicDescription        mClientDataFormat;
 252         CAAudioChannelLayout            mClientChannelLayout;
 253 #endif
 254
 255 #if !CAAF_USE_EXTAUDIOFILE
 256         CAAudioFile();
 257         virtual ~CAAudioFile();
 258
 259         // --- second-stage initializers ---
 260         // Use exactly one of the following:
 261         //              - Open
 262         //              - PrepareNew followed by Create
 263         //              - Wrap
 264
 265         void    Open(const FSRef &fsref);
 266                                 // open an existing file
 267
 268         void    CreateNew(const FSRef &inParentDir, CFStringRef inFileName,     AudioFileTypeID inFileType, const AudioStreamBasicDescription &inStreamDesc, const AudioChannelLayout *inChannelLayout=NULL);
 269
 270         void    Wrap(AudioFileID fileID, bool forWriting);
 271                                 // use this to wrap an AudioFileID opened externally
 272
 273         // ---
 274
 275         void    Close();
 276                                 // In case you want to close the file before the destructor executes
 277
 278         // --- Data formats ---
 279
 280         // Allow specifying the file's channel layout. Must be called before SetClientFormat.
 281         // When writing, the specified channel layout is written to the file (if the file format supports
 282         // the channel layout). When reading, the specified layout overrides the one read from the file,
 283         // if any.
 284         void    SetFileChannelLayout(const CAAudioChannelLayout &layout);
 285
 286         // This specifies the data format which the client will use for reading/writing the file,
 287         // which may be different from the file's format. An AudioConverter is created if necessary.
 288         // The client format must be linear PCM.
 289         void    SetClientFormat(const CAStreamBasicDescription &dataFormat, const CAAudioChannelLayout *layout=NULL);
 290         void    SetClientDataFormat(const CAStreamBasicDescription &dataFormat) { SetClientFormat(dataFormat, NULL); }
 291         void    SetClientChannelLayout(const CAAudioChannelLayout &layout) { SetClientFormat(mClientDataFormat, &layout); }
 292
 293         // Wrapping the underlying converter, if there is one
 294         OSStatus        SetConverterProperty(AudioConverterPropertyID   inPropertyID,
 295                                                                         UInt32                                          inPropertyDataSize,
 296                                                                         const void *                            inPropertyData,
 297                                                                         bool                                            inCanFail = false);
 298         void            SetConverterConfig(CFArrayRef config) {
 299                                         SetConverterProperty(kAudioConverterPropertySettings, sizeof(config), &config); }
 300         CFArrayRef  GetConverterConfig();
 301
 302         // --- I/O ---
 303         // All I/O is sequential, but you can seek to an arbitrary position when reading.
 304         // SeekToPacket and TellPacket's packet numbers are in the file's data format, not the client's.
 305         // However, ReadPackets/WritePackets use packet counts in the client data format.
 306
 307         void    Read(UInt32 &ioNumFrames, AudioBufferList *ioData);
 308         void    Write(UInt32 numFrames, const AudioBufferList *data);
 309
 310         // These can fail for files without a constant mFramesPerPacket
 311         void    Seek(SInt64 frameNumber);
 312         SInt64  Tell() const;   // frameNumber
 313
 314         // --- Accessors ---
 315         // note: client parameters only valid if SetClientFormat has been called
 316         AudioFileID                                             GetAudioFileID() const { return mAudioFile; }
 317         const CAStreamBasicDescription &GetFileDataFormat() const { return mFileDataFormat; }
 318         const CAStreamBasicDescription &GetClientDataFormat() const { return mClientDataFormat; }
 319         const CAAudioChannelLayout &    GetFileChannelLayout() const { return mFileChannelLayout; }
 320         const CAAudioChannelLayout &    GetClientChannelLayout() const { return mClientChannelLayout; }
 321         AudioConverterRef                               GetConverter() const { return mConverter; }
 322
 323         UInt32  GetFileMaxPacketSize() const { return mFileMaxPacketSize; }
 324         UInt32  GetClientMaxPacketSize() const { return mClientMaxPacketSize; }
 325         SInt64  GetNumberPackets() const {
 326                 SInt64 npackets;
 327                 UInt32 propertySize = sizeof(npackets);
 328                 XThrowIfError(AudioFileGetProperty(mAudioFile, kAudioFilePropertyAudioDataPacketCount, &propertySize, &npackets), "get audio file's packet count");
 329                 return npackets;
 330         }
 331         SInt64  GetNumberFrames() const;
 332                                 // will be 0 if the file's frames/packet is 0 (variable)
 333         void    SetNumberFrames(SInt64 length); // should only be set on a PCM file
 334
 335         // --- Tunable performance parameters ---
 336         void    SetUseCache(bool b) { mUseCache = b; }
 337         void    SetIOBufferSizeBytes(UInt32 bufferSizeBytes) { mIOBufferSizeBytes = bufferSizeBytes; }
 338         UInt32  GetIOBufferSizeBytes() { return mIOBufferSizeBytes; }
 339         void *  GetIOBuffer() { return mIOBufferList.mBuffers[0].mData; }
 340         void    SetIOBuffer(void *buf);
 341
 342         // -- Profiling ---
 343 #if CAAUDIOFILE_PROFILE
 344         void    EnableProfiling(bool b) { mProfiling = b; }
 345         UInt64  TicksInConverter() const { return (mTicksInConverter > 0) ? (mTicksInConverter - mTicksInReadInConverter) : 0; }
 346         UInt64  TicksInIO() const { return mTicksInIO; }
 347 #endif
 348
 349 // _______________________________________________________________________________________
 350 private:
 351         SInt64  FileDataOffset();
 352         void    SeekToPacket(SInt64 packetNumber);
 353         SInt64  TellPacket() const { return mPacketMark; }  // will be imprecise if SeekToFrame was called
 354
 355         void    SetConverterChannelLayout(bool output, const CAAudioChannelLayout &layout);
 356         void    WritePacketsFromCallback(
 357                                                                         AudioConverterComplexInputDataProc      inInputDataProc,
 358                                                                         void *                                                          inInputDataProcUserData);
 359                                 // will use I/O buffer size
 360         void    InitFileMaxPacketSize();
 361         void    FileFormatChanged(const FSRef *parentDir=0, CFStringRef filename=0, AudioFileTypeID filetype=0);
 362
 363         void    GetExistingFileInfo();
 364         void    FlushEncoder();
 365         void    CloseConverter();
 366         void    UpdateClientMaxPacketSize();
 367         void    AllocateBuffers(bool okToFail=false);
 368         SInt64  PacketToFrame(SInt64 packet) const;
 369         SInt64  FrameToPacket(SInt64 inFrame) const;
 370
 371         static OSStatus ReadInputProc(          AudioConverterRef                               inAudioConverter,
 372                                                                                 UInt32*                                                 ioNumberDataPackets,
 373                                                                                 AudioBufferList*                                ioData,
 374                                                                                 AudioStreamPacketDescription**  outDataPacketDescription,
 375                                                                                 void*                                                   inUserData);
 376
 377         static OSStatus WriteInputProc(         AudioConverterRef                               inAudioConverter,
 378                                                                                 UInt32*                                                 ioNumberDataPackets,
 379                                                                                 AudioBufferList*                                ioData,
 380                                                                                 AudioStreamPacketDescription**  outDataPacketDescription,
 381                                                                                 void*                                                   inUserData);
 382 // _______________________________________________________________________________________
 383 private:
 384
 385         // the file
 386         FSRef                                           mFSRef;
 387         AudioFileID                                     mAudioFile;
 388         bool                                            mOwnOpenFile;
 389         bool                                            mUseCache;
 390         bool                                            mFinishingEncoding;
 391         enum { kClosed, kReading, kPreparingToCreate, kPreparingToWrite, kWriting } mMode;
 392
 393 //      SInt64                                          mNumberPackets;         // in file's format
 394         SInt64                                          mFileDataOffset;
 395         SInt64                                          mPacketMark;            // in file's format
 396         SInt64                                          mFrameMark;                     // this may be offset from the start of the file
 397                                                                                                         // by the codec's latency; i.e. our frame 0 could
 398                                                                                                         // lie at frame 2112 of a decoded AAC file
 399         SInt32                                          mFrame0Offset;
 400         UInt32                                          mFramesToSkipFollowingSeek;
 401
 402         // buffers
 403         UInt32                                          mIOBufferSizeBytes;
 404         UInt32                                          mIOBufferSizePackets;
 405         AudioBufferList                         mIOBufferList;          // only one buffer -- USE ACCESSOR so it can be lazily initialized
 406         bool                                            mClientOwnsIOBuffer;
 407         AudioStreamPacketDescription *mPacketDescs;
 408         UInt32                                          mNumPacketDescs;
 409
 410         // formats/conversion
 411         AudioConverterRef                       mConverter;
 412         CAStreamBasicDescription        mFileDataFormat;
 413         CAStreamBasicDescription        mClientDataFormat;
 414         CAAudioChannelLayout            mFileChannelLayout;
 415         CAAudioChannelLayout            mClientChannelLayout;
 416         UInt32                                          mFileMaxPacketSize;
 417         UInt32                                          mClientMaxPacketSize;
 418
 419         // cookie
 420         Byte *                                          mMagicCookie;
 421         UInt32                                          mMagicCookieSize;
 422
 423         // for ReadPackets
 424         UInt32                                          mMaxPacketsToRead;
 425
 426         // for WritePackets
 427         UInt32                                          mWritePackets;
 428         CABufferList *                          mWriteBufferList;
 429
 430 #if CAAUDIOFILE_PROFILE
 431         // performance
 432         bool                                            mProfiling;
 433         UInt64                                          mTicksInConverter;
 434         UInt64                                          mTicksInReadInConverter;
 435         UInt64                                          mTicksInIO;
 436         bool                                            mInConverter;
 437 #endif
 438
 439 #endif // CAAF_USE_EXTAUDIOFILE
 440 };
 441
 442 #endif // __CAAudioFile_h__