luisf@665: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
luisf@665: 
luisf@665: /*
luisf@665:     Sonic Visualiser
luisf@665:     An audio file viewer and annotation editor.
luisf@665:     Centre for Digital Music, Queen Mary, University of London.
Chris@748:     This file copyright 2006-2012 Chris Cannam and QMUL.
luisf@665: 
luisf@665:     This program is free software; you can redistribute it and/or
luisf@665:     modify it under the terms of the GNU General Public License as
luisf@665:     published by the Free Software Foundation; either version 2 of the
luisf@665:     License, or (at your option) any later version.  See the file
luisf@665:     COPYING included with this distribution for more information.
luisf@665:  */
luisf@665: 
luisf@665: #ifdef HAVE_COREAUDIO
luisf@665: 
luisf@665: #include "CoreAudioFileReader.h"
luisf@665: #include "base/Profiler.h"
luisf@665: #include "base/ProgressReporter.h"
luisf@665: #include "system/System.h"
luisf@665: 
luisf@665: #include <QFileInfo>
luisf@665: 
luisf@665: #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
luisf@665: #include <AudioToolbox/AudioToolbox.h>
Chris@743: #include <AudioToolbox/ExtendedAudioFile.h>
luisf@665: #else
luisf@665: #include "AudioToolbox.h"
luisf@665: #include "ExtendedAudioFile.h"
luisf@665: #endif
luisf@665: 
luisf@665: class CoreAudioFileReader::D
luisf@665: {
luisf@665: public:
Chris@743:     D() : blockSize(1024) { }
luisf@665: 
Chris@743:     ExtAudioFileRef file;
Chris@743:     AudioBufferList buffer;
Chris@743:     OSStatus err;
Chris@743:     AudioStreamBasicDescription asbd;
Chris@743:     int blockSize;
luisf@665: };
luisf@665: 
Chris@743: static QString
Chris@743: codestr(OSStatus err)
Chris@743: {
Chris@743:     char text[5];
Chris@743:     UInt32 uerr = err;
Chris@743:     text[0] = (uerr >> 24) & 0xff;
Chris@743:     text[1] = (uerr >> 16) & 0xff;
Chris@743:     text[2] = (uerr >> 8) & 0xff;
Chris@743:     text[3] = (uerr) & 0xff;
Chris@743:     text[4] = '\0';
Chris@743:     return QString("%1 (%2)").arg(err).arg(QString::fromAscii(text));
Chris@743: }
luisf@665: 
luisf@665: CoreAudioFileReader::CoreAudioFileReader(FileSource source,
Chris@743:                                          DecodeMode decodeMode,
Chris@743:                                          CacheMode mode,
Chris@743:                                          size_t targetRate,
Chris@743:                                          ProgressReporter *reporter) :
luisf@665:     CodedAudioFileReader(mode, targetRate),
luisf@665:     m_source(source),
luisf@665:     m_path(source.getLocalFilename()),
luisf@665:     m_d(new D),
luisf@665:     m_reporter(reporter),
luisf@665:     m_cancelled(false),
luisf@665:     m_completion(0),
luisf@665:     m_decodeThread(0)
luisf@665: {
Chris@743:     m_channelCount = 0;
Chris@743:     m_fileRate = 0;
luisf@665: 
Chris@760:     m_d->buffer.mBuffers[0].mData = 0;
Chris@760: 
Chris@743:     Profiler profiler("CoreAudioFileReader::CoreAudioFileReader", true);
luisf@665: 
Chris@759:     SVDEBUG << "CoreAudioFileReader: path is \"" << m_path.toStdString() << "\"" << endl;
luisf@665: 
Chris@743:     QByteArray ba = m_path.toLocal8Bit();
luisf@665: 
Chris@743:     CFURLRef url = CFURLCreateFromFileSystemRepresentation
Chris@743:         (kCFAllocatorDefault,
Chris@743:          (const UInt8 *)ba.data(),
Chris@743:          (CFIndex)ba.length(),
Chris@743:          false);
luisf@665: 
Chris@743:     //!!! how do we find out if the file open fails because of DRM protection?
luisf@665: 
Chris@743: #if (MACOSX_DEPLOYMENT_TARGET <= 1040 && MAC_OS_X_VERSION_MIN_REQUIRED <= 1040)
Chris@743:     FSRef fsref;
Chris@743:     if (!CFURLGetFSRef(url, &fsref)) { // returns Boolean, not error code
Chris@743:         m_error = "CoreAudioReadStream: Error looking up FS ref (file not found?)";
Chris@743:         return;
Chris@743:     }
Chris@743:     m_d->err = ExtAudioFileOpen(&fsref, &m_d->file);
Chris@743: #else
Chris@743:     m_d->err = ExtAudioFileOpenURL(url, &m_d->file);
Chris@743: #endif
luisf@665: 
Chris@743:     CFRelease(url);
luisf@665: 
Chris@743:     if (m_d->err) { 
Chris@743:         m_error = "CoreAudioReadStream: Error opening file: code " + codestr(m_d->err);
Chris@743:         return;
Chris@743:     }
Chris@743:     if (!m_d->file) { 
Chris@743:         m_error = "CoreAudioReadStream: Failed to open file, but no error reported!";
Chris@743:         return;
Chris@743:     }
Chris@743:     
Chris@743:     UInt32 propsize = sizeof(AudioStreamBasicDescription);
Chris@743:     m_d->err = ExtAudioFileGetProperty
Chris@743: 	(m_d->file, kExtAudioFileProperty_FileDataFormat, &propsize, &m_d->asbd);
Chris@743:     
Chris@743:     if (m_d->err) {
Chris@743:         m_error = "CoreAudioReadStream: Error in getting basic description: code " + codestr(m_d->err);
Chris@743:         return;
Chris@743:     }
Chris@743: 	
Chris@743:     m_channelCount = m_d->asbd.mChannelsPerFrame;
Chris@755:     m_fileRate = m_d->asbd.mSampleRate;
luisf@665: 
Chris@759:     std::cerr << "CoreAudioReadStream: " << m_channelCount << " channels, " << m_fileRate << " Hz" << std::endl;
luisf@665: 
Chris@743:     m_d->asbd.mFormatID = kAudioFormatLinearPCM;
Chris@743:     m_d->asbd.mFormatFlags =
Chris@743:         kAudioFormatFlagIsFloat |
Chris@743:         kAudioFormatFlagIsPacked |
Chris@743:         kAudioFormatFlagsNativeEndian;
Chris@743:     m_d->asbd.mBitsPerChannel = sizeof(float) * 8;
Chris@743:     m_d->asbd.mBytesPerFrame = sizeof(float) * m_channelCount;
Chris@743:     m_d->asbd.mBytesPerPacket = sizeof(float) * m_channelCount;
Chris@743:     m_d->asbd.mFramesPerPacket = 1;
Chris@743:     m_d->asbd.mReserved = 0;
Chris@743: 	
Chris@743:     m_d->err = ExtAudioFileSetProperty
Chris@743: 	(m_d->file, kExtAudioFileProperty_ClientDataFormat, propsize, &m_d->asbd);
Chris@743:     
Chris@743:     if (m_d->err) {
Chris@743:         m_error = "CoreAudioReadStream: Error in setting client format: code " + codestr(m_d->err);
Chris@743:         return;
Chris@743:     }
luisf@665: 
Chris@743:     m_d->buffer.mNumberBuffers = 1;
Chris@743:     m_d->buffer.mBuffers[0].mNumberChannels = m_channelCount;
Chris@743:     m_d->buffer.mBuffers[0].mDataByteSize = sizeof(float) * m_channelCount * m_d->blockSize;
Chris@743:     m_d->buffer.mBuffers[0].mData = new float[m_channelCount * m_d->blockSize];
luisf@665: 
Chris@743:     initialiseDecodeCache();
luisf@665: 
Chris@743:     if (m_reporter) {
Chris@743:         connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
Chris@743:         m_reporter->setMessage
Chris@743:             (tr("Decoding %1...").arg(QFileInfo(m_path).fileName()));
Chris@743:     }
luisf@665: 
Chris@743:     while (1) {
luisf@665: 
Chris@743:         UInt32 framesRead = m_d->blockSize;
Chris@743:         m_d->err = ExtAudioFileRead(m_d->file, &framesRead, &m_d->buffer);
luisf@665: 
Chris@743:         if (m_d->err) {
Chris@743:             m_error = QString("Error in CoreAudio decoding: code %1")
Chris@743:                 .arg(m_d->err);
Chris@743:             break;
Chris@743:         }
luisf@665: 
Chris@743:         //!!! progress?
luisf@665: 
Chris@743:         //    std::cerr << "Read " << framesRead << " frames (block size " << m_d->blockSize << ")" << std::endl;
luisf@665: 
Chris@743:         // buffers are interleaved unless specified otherwise
Chris@743:         addSamplesToDecodeCache((float *)m_d->buffer.mBuffers[0].mData, framesRead);
luisf@665: 
Chris@743:         if (framesRead < m_d->blockSize) break;
Chris@743:     }
luisf@665: 
Chris@743:     finishDecodeCache();
Chris@743:     endSerialised();
luisf@665: 
Chris@743:     m_completion = 100;
luisf@665: 
Chris@743:     ExtAudioFileDispose(m_d->file);
luisf@665: }
luisf@665: 
luisf@665: 
luisf@665: CoreAudioFileReader::~CoreAudioFileReader()
luisf@665: {
Chris@743:     std::cerr << "CoreAudioFileReader::~CoreAudioFileReader" << std::endl;
Chris@743:     delete[] m_d->buffer.mBuffers[0].mData;
Chris@743:     delete m_d;
luisf@665: }
luisf@665: 
luisf@665: void
luisf@665: CoreAudioFileReader::cancelled()
luisf@665: {
luisf@665:   m_cancelled = true;
luisf@665: }
luisf@665: 
luisf@665: void
luisf@665: CoreAudioFileReader::getSupportedExtensions(std::set<QString> &extensions)
luisf@665: {
Chris@743:     extensions.insert("aiff");
Chris@743:     extensions.insert("aif");
Chris@743:     extensions.insert("au");
Chris@743:     extensions.insert("m4a");
Chris@743:     extensions.insert("m4b");
Chris@743:     extensions.insert("m4p");
Chris@743:     extensions.insert("mp3");
Chris@743:     extensions.insert("mp4");
Chris@743:     extensions.insert("wav");
luisf@665: }
luisf@665: 
luisf@665: bool
luisf@665: CoreAudioFileReader::supportsExtension(QString extension)
luisf@665: {
Chris@743:     std::set<QString> extensions;
Chris@743:     getSupportedExtensions(extensions);
Chris@743:     return (extensions.find(extension.toLower()) != extensions.end());
luisf@665: }
luisf@665: 
luisf@665: bool
luisf@665: CoreAudioFileReader::supportsContentType(QString type)
luisf@665: {
Chris@743:     return (type == "audio/x-aiff" ||
Chris@743:             type == "audio/x-wav" ||
Chris@743:             type == "audio/mpeg" ||
Chris@743:             type == "audio/basic" ||
Chris@749:             type == "audio/x-aac");
luisf@665: }
luisf@665: 
luisf@665: bool
luisf@665: CoreAudioFileReader::supports(FileSource &source)
luisf@665: {
Chris@743:     return (supportsExtension(source.getExtension()) ||
Chris@743:             supportsContentType(source.getContentType()));
luisf@665: }
luisf@665: 
luisf@665: #endif
luisf@665: