src/cdrom/macosx/AudioFilePlayer.cpp
author Sam Lantinga <slouken@libsdl.org>
Sat, 28 Jun 2003 17:03:57 +0000
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child 768 de1b2c3063b9
permissions -rw-r--r--
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga
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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 Library 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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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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    This file based on Apple sample code. We haven't changed the file name, 
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    so if you want to see the original search for it on apple.com/developer
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*/
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//  AudioFilePlayer.cpp
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//
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#include "AudioFilePlayer.h"
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extern const char* AudioFilePlayerErrorStr (OSStatus error)
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{
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    const char *str;
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    switch (error) {
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    case kAudioFileUnspecifiedError:               str = "wht?"; break;
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    case kAudioFileUnsupportedFileTypeError:       str = "typ?"; break;
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    case kAudioFileUnsupportedDataFormatError:     str = "fmt?"; break;
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    case kAudioFileUnsupportedPropertyError:       str = "pty?"; break;
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    case kAudioFileBadPropertySizeError:           str = "!siz"; break;
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    case kAudioFileNotOptimizedError:              str = "optm"; break;
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    case kAudioFilePermissionsError:               str = "prm?"; break;
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    case kAudioFileFormatNameUnavailableError:     str = "nme?"; break;
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    case kAudioFileInvalidChunkError:              str = "chk?"; break;
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    case kAudioFileDoesNotAllow64BitDataSizeError: str = "off?"; break;
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    default: str = "error unspecified";
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    }
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    return str;
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}
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void ThrowResult (OSStatus result, const char* str)
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{
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    SDL_SetError ("Error: %s %d (%s)",
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                   str, result, AudioFilePlayerErrorStr(result));
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    throw result;
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}
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#if DEBUG
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void PrintStreamDesc (AudioStreamBasicDescription *inDesc)
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{
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    if (!inDesc) {
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        printf ("Can't print a NULL desc!\n");
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        return;
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    }
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    printf ("- - - - - - - - - - - - - - - - - - - -\n");
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    printf ("  Sample Rate:%f\n", inDesc->mSampleRate);
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    printf ("  Format ID:%s\n", (char*)&inDesc->mFormatID);
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    printf ("  Format Flags:%lX\n", inDesc->mFormatFlags);
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    printf ("  Bytes per Packet:%ld\n", inDesc->mBytesPerPacket);
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    printf ("  Frames per Packet:%ld\n", inDesc->mFramesPerPacket);
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    printf ("  Bytes per Frame:%ld\n", inDesc->mBytesPerFrame);
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    printf ("  Channels per Frame:%ld\n", inDesc->mChannelsPerFrame);
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    printf ("  Bits per Channel:%ld\n", inDesc->mBitsPerChannel);
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    printf ("- - - - - - - - - - - - - - - - - - - -\n");
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}
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#endif
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OSStatus    AudioFileManager::FileInputProc (void                       *inRefCon, 
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                                             AudioUnitRenderActionFlags inActionFlags,
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                                             const AudioTimeStamp       *inTimeStamp, 
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                                             UInt32                     inBusNumber, 
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                                             AudioBuffer                *ioData)
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{
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    AudioFileManager* THIS = (AudioFileManager*)inRefCon;
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    return THIS->Render(*ioData);
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}
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OSStatus    AudioFileManager::Render (AudioBuffer &ioData)
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{
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    OSStatus result = AudioConverterFillBuffer(mParentConverter, 
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                                    AudioFileManager::ACInputProc, 
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                                    this, 
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                                    &ioData.mDataByteSize, 
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                                    ioData.mData);
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    if (result) {
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        SDL_SetError ("AudioConverterFillBuffer:%ld\n", result);
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        mParent.DoNotification (result);
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    } else {
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        mByteCounter += ioData.mDataByteSize / 2;
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        AfterRender();
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    }
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    return result;
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}
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OSStatus    AudioFileManager::ACInputProc (AudioConverterRef            inAudioConverter,
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                                            UInt32*                     outDataSize,
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                                            void**                      outData,
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                                            void*                       inUserData)
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{
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    AudioFileManager* THIS = (AudioFileManager*)inUserData;
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    return THIS->GetFileData(outData, outDataSize);
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}
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AudioFileManager::~AudioFileManager ()
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{
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    if (mFileBuffer) {
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        free (mFileBuffer);
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        mFileBuffer = 0;
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    }
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}
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   123
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AudioFilePlayer::AudioFilePlayer (const FSRef           *inFileRef)
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    : mConnected (false),
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      mAudioFileManager (0),
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      mConverter (0),
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      mNotifier (0),
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      mStartFrame (0)
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{
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    SInt64 fileDataSize  = 0;
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    OpenFile (inFileRef, fileDataSize);
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    // we want about a seconds worth of data for the buffer
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    int secsBytes = UInt32 (mFileDescription.mSampleRate * mFileDescription.mBytesPerFrame);
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#if DEBUG
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    printf("File format:\n");
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    PrintStreamDesc (&mFileDescription);
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#endif
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        //round to a 32K boundary
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    //if ((secsBytes & 0xFFFF8000) > (128 * 1024))
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        //secsBytes &= 0xFFFF8000;
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    //else
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        //secsBytes = (secsBytes + 0x7FFF) & 0xFFFF8000;
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    mAudioFileManager = new AudioFileReaderThread (*this, 
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                                                mAudioFileID, 
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                                                fileDataSize,
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                                                secsBytes);
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}
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// you can put a rate scalar here to play the file faster or slower
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// by multiplying the same rate by the desired factor 
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// eg fileSampleRate * 2 -> twice as fast
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// before you create the AudioConverter
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void    AudioFilePlayer::SetDestination (AudioUnit              &inDestUnit, 
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                                int                             inBusNumber)
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{
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    if (mConnected) throw static_cast<OSStatus>(-1); //can't set dest if already engaged
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    mPlayUnit = inDestUnit;
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    mBusNumber = inBusNumber;
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    OSStatus result = noErr;
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    if (mConverter) {
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        result = AudioConverterDispose (mConverter);
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            THROW_RESULT("AudioConverterDispose")
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    }
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    AudioStreamBasicDescription     destDesc;
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    UInt32  size = sizeof (destDesc);
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    result = AudioUnitGetProperty (inDestUnit,
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                                   kAudioUnitProperty_StreamFormat,
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                                   kAudioUnitScope_Input,
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                                   inBusNumber,
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                                   &destDesc,
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                                   &size);
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        THROW_RESULT("AudioUnitGetProperty")
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#if DEBUG
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    printf("Destination format:\n");
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    PrintStreamDesc (&destDesc);
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#endif
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        //we can "down" cast a component instance to a component
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    ComponentDescription desc;
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    result = GetComponentInfo ((Component)inDestUnit, &desc, 0, 0, 0);
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        THROW_RESULT("GetComponentInfo")
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        // we're going to use this to know which convert routine to call
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        // a v1 audio unit will have a type of 'aunt'
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        // a v2 audio unit will have one of several different types.
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    mIsAUNTUnit = (desc.componentType == kAudioUnitComponentType);
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   198
    
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    if (!mIsAUNTUnit) {
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        result = badComponentInstance;
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        THROW_RESULT("BAD COMPONENT")
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    }
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   203
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   204
    
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    // HACK - the AIFF files on CDs are in little endian order!
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    if (mFileDescription.mFormatFlags == 0xE)
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        mFileDescription.mFormatFlags &= ~kAudioFormatFlagIsBigEndian;
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   208
    
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   209
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    result = AudioConverterNew (&mFileDescription, &destDesc, &mConverter);
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        THROW_RESULT("AudioConverterNew")
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   212
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   213
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/*
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    // if we have a mono source, we're going to copy each channel into
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    // the destination's channel source...
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    if (mFileDescription.mChannelsPerFrame == 1) {
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   218
    
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        SInt32* channelMap = new SInt32 [destDesc.mChannelsPerFrame];
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        for (unsigned int i = 0; i < destDesc.mChannelsPerFrame; ++i)
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            channelMap[i] = 0; //set first channel to all output channels
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   222
            
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        result = AudioConverterSetProperty(mConverter,
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                            kAudioConverterChannelMap,
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                            (sizeof(SInt32) * destDesc.mChannelsPerFrame),
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                            channelMap);
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            THROW_RESULT("AudioConverterSetProperty")
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        delete [] channelMap;
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    }
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*/
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    assert (mFileDescription.mChannelsPerFrame == 2);
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   233
    
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   234
#if 0
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    // this uses the better quality SRC
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    UInt32 srcID = kAudioUnitSRCAlgorithm_Polyphase;
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    result = AudioConverterSetProperty(mConverter,
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                    kAudioConverterSampleRateConverterAlgorithm, 
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                    sizeof(srcID), 
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                    &srcID);
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        THROW_RESULT("AudioConverterSetProperty")
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   242
#endif
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}
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   244
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void    AudioFilePlayer::SetStartFrame (int frame)
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{
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    SInt64 position = frame * 2352;
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    mStartFrame = frame;
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    mAudioFileManager->SetPosition (position);
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}
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   253
    
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int    AudioFilePlayer::GetCurrentFrame ()
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{
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    return mStartFrame + (mAudioFileManager->GetByteCounter() / 2352);
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}
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void    AudioFilePlayer::SetStopFrame (int frame)
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{
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    SInt64 position  = frame * 2352;
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    mAudioFileManager->SetEndOfFile (position);
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}
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AudioFilePlayer::~AudioFilePlayer()
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{
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    Disconnect();
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    if (mAudioFileManager) {
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        delete mAudioFileManager;
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        mAudioFileManager = 0;
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    }
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    if (mAudioFileID) {
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        ::AudioFileClose (mAudioFileID);
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        mAudioFileID = 0;
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   278
    }
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    if (mConverter) {
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        AudioConverterDispose (mConverter);
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        mConverter = 0;
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   283
    }
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}
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   285
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void    AudioFilePlayer::Connect()
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{
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#if DEBUG
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    printf ("Connect:%x,%ld, engaged=%d\n", (int)mPlayUnit, mBusNumber, (mConnected ? 1 : 0));
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#endif
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    if (!mConnected)
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    {           
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   293
        mAudioFileManager->Connect(mConverter);
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   294
                
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        // set the render callback for the file data to be supplied to the sound converter AU
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   296
        if (mIsAUNTUnit) {
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   297
            mInputCallback.inputProc = AudioFileManager::FileInputProc;
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   298
            mInputCallback.inputProcRefCon = mAudioFileManager;
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   299
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            OSStatus result = AudioUnitSetProperty (mPlayUnit, 
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                                kAudioUnitProperty_SetInputCallback, 
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                                kAudioUnitScope_Input, 
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                                mBusNumber,
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   304
                                &mInputCallback, 
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   305
                                sizeof(mInputCallback));
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   306
            THROW_RESULT("AudioUnitSetProperty")
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   307
        }
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   308
        mConnected = true;
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   309
    }
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   310
}
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   311
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   312
// warning noted, now please go away ;-)
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   313
// #warning This should redirect the calling of notification code to some other thread
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   314
void    AudioFilePlayer::DoNotification (OSStatus inStatus) const
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   315
{
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   316
    AudioFilePlayer* THIS = const_cast<AudioFilePlayer*>(this);
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   317
        
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   318
    if (mNotifier) {
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   319
        (*mNotifier) (mRefCon, inStatus);
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diff changeset
   320
    } 
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   321
    
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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   322
    else {
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   323
        SDL_SetError ("Notification posted with no notifier in place");
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   324
        
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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   325
        if (inStatus == kAudioFilePlay_FileIsFinished)
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diff changeset
   326
            THIS->Disconnect();
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diff changeset
   327
        else if (inStatus != kAudioFilePlayErr_FilePlayUnderrun)
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   328
            THIS->Disconnect();
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   329
    }
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diff changeset
   330
}
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   331
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   332
void    AudioFilePlayer::Disconnect ()
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   333
{
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diff changeset
   334
#if DEBUG
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   335
    printf ("Disconnect:%x,%ld, engaged=%d\n", (int)mPlayUnit, mBusNumber, (mConnected ? 1 : 0));
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   336
#endif
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   337
    if (mConnected)
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   338
    {
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   339
        mConnected = false;
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   340
            
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   341
        if (mIsAUNTUnit) {
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   342
            mInputCallback.inputProc = 0;
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   343
            mInputCallback.inputProcRefCon = 0;
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   344
            OSStatus result = AudioUnitSetProperty (mPlayUnit, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   345
                                            kAudioUnitProperty_SetInputCallback, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   346
                                            kAudioUnitScope_Input, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   347
                                            mBusNumber,
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   348
                                            &mInputCallback, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   349
                                            sizeof(mInputCallback));
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   350
            if (result) 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   351
                SDL_SetError ("AudioUnitSetProperty:RemoveInputCallback:%ld", result);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   352
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   353
        }
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   354
        
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   355
        mAudioFileManager->Disconnect();
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   356
    }
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   357
}
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   358
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   359
void    AudioFilePlayer::OpenFile (const FSRef *inRef, SInt64& outFileDataSize)
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   360
{       
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   361
    OSStatus result = AudioFileOpen (inRef, fsRdPerm, 0, &mAudioFileID);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   362
        THROW_RESULT("AudioFileOpen")
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   363
        
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   364
    UInt32 dataSize = sizeof(AudioStreamBasicDescription);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   365
    result = AudioFileGetProperty (mAudioFileID, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   366
                            kAudioFilePropertyDataFormat, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
diff changeset
   367
                            &dataSize, 
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   368
                            &mFileDescription);
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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diff changeset
   369
        THROW_RESULT("AudioFileGetProperty")
9c6717a1c66f Added MacOS X CD-ROM audio support (thanks Max and Darrell)
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parents:
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   370
    
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    dataSize = sizeof (SInt64);
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    result = AudioFileGetProperty (mAudioFileID, 
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                            kAudioFilePropertyAudioDataByteCount, 
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                            &dataSize, 
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                            &outFileDataSize);
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        THROW_RESULT("AudioFileGetProperty")
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}