diff data/fileio/CoreAudioFileReader.cpp @ 747:523e97d0f6eb

Merge from branch "coreaudio_tests"

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data/fileio/CoreAudioFileReader.cpp	Mon Sep 03 11:06:50 2012 +0100
@@ -0,0 +1,291 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006-2007 Chris Cannam and QMUL.
+
+    Based on QTAudioFile.cpp from SoundBite, copyright 2006
+    Chris Sutton and Mark Levy.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+ */
+
+#ifdef HAVE_COREAUDIO
+
+#include "CoreAudioFileReader.h"
+#include "base/Profiler.h"
+#include "base/ProgressReporter.h"
+#include "system/System.h"
+
+#include <QFileInfo>
+
+#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
+#include <AudioToolbox/AudioToolbox.h>
+#include <AudioToolbox/ExtendedAudioFile.h>
+#else
+#include "AudioToolbox.h"
+#include "ExtendedAudioFile.h"
+#endif
+
+class CoreAudioFileReader::D
+{
+public:
+    D() : blockSize(1024) { }
+
+    ExtAudioFileRef file;
+    AudioBufferList buffer;
+    OSStatus err;
+    AudioStreamBasicDescription asbd;
+    int blockSize;
+};
+
+static QString
+codestr(OSStatus err)
+{
+    char text[5];
+    UInt32 uerr = err;
+    text[0] = (uerr >> 24) & 0xff;
+    text[1] = (uerr >> 16) & 0xff;
+    text[2] = (uerr >> 8) & 0xff;
+    text[3] = (uerr) & 0xff;
+    text[4] = '\0';
+    return QString("%1 (%2)").arg(err).arg(QString::fromAscii(text));
+}
+
+CoreAudioFileReader::CoreAudioFileReader(FileSource source,
+                                         DecodeMode decodeMode,
+                                         CacheMode mode,
+                                         size_t targetRate,
+                                         ProgressReporter *reporter) :
+    CodedAudioFileReader(mode, targetRate),
+    m_source(source),
+    m_path(source.getLocalFilename()),
+    m_d(new D),
+    m_reporter(reporter),
+    m_cancelled(false),
+    m_completion(0),
+    m_decodeThread(0)
+{
+    m_channelCount = 0;
+    m_fileRate = 0;
+
+    Profiler profiler("CoreAudioFileReader::CoreAudioFileReader", true);
+
+    std::cerr << "CoreAudioFileReader: path is \"" << m_path.toStdString() << "\"" << std::endl;
+
+    QByteArray ba = m_path.toLocal8Bit();
+
+    CFURLRef url = CFURLCreateFromFileSystemRepresentation
+        (kCFAllocatorDefault,
+         (const UInt8 *)ba.data(),
+         (CFIndex)ba.length(),
+         false);
+
+    //!!! how do we find out if the file open fails because of DRM protection?
+
+#if (MACOSX_DEPLOYMENT_TARGET <= 1040 && MAC_OS_X_VERSION_MIN_REQUIRED <= 1040)
+    FSRef fsref;
+    if (!CFURLGetFSRef(url, &fsref)) { // returns Boolean, not error code
+        m_error = "CoreAudioReadStream: Error looking up FS ref (file not found?)";
+        return;
+    }
+    m_d->err = ExtAudioFileOpen(&fsref, &m_d->file);
+#else
+    m_d->err = ExtAudioFileOpenURL(url, &m_d->file);
+#endif
+
+    CFRelease(url);
+
+    if (m_d->err) { 
+        m_error = "CoreAudioReadStream: Error opening file: code " + codestr(m_d->err);
+        return;
+    }
+    if (!m_d->file) { 
+        m_error = "CoreAudioReadStream: Failed to open file, but no error reported!";
+        return;
+    }
+    
+    UInt32 propsize = sizeof(AudioStreamBasicDescription);
+    m_d->err = ExtAudioFileGetProperty
+	(m_d->file, kExtAudioFileProperty_FileDataFormat, &propsize, &m_d->asbd);
+    
+    if (m_d->err) {
+        m_error = "CoreAudioReadStream: Error in getting basic description: code " + codestr(m_d->err);
+        return;
+    }
+	
+    m_channelCount = m_d->asbd.mChannelsPerFrame;
+    m_sampleRate = m_d->asbd.mSampleRate;
+
+    std::cerr << "CoreAudioReadStream: " << m_channelCount << " channels, " << m_sampleRate << " Hz" << std::endl;
+
+    m_d->asbd.mSampleRate = getSampleRate();
+
+    m_d->asbd.mFormatID = kAudioFormatLinearPCM;
+    m_d->asbd.mFormatFlags =
+        kAudioFormatFlagIsFloat |
+        kAudioFormatFlagIsPacked |
+        kAudioFormatFlagsNativeEndian;
+    m_d->asbd.mBitsPerChannel = sizeof(float) * 8;
+    m_d->asbd.mBytesPerFrame = sizeof(float) * m_channelCount;
+    m_d->asbd.mBytesPerPacket = sizeof(float) * m_channelCount;
+    m_d->asbd.mFramesPerPacket = 1;
+    m_d->asbd.mReserved = 0;
+	
+    m_d->err = ExtAudioFileSetProperty
+	(m_d->file, kExtAudioFileProperty_ClientDataFormat, propsize, &m_d->asbd);
+    
+    if (m_d->err) {
+        m_error = "CoreAudioReadStream: Error in setting client format: code " + codestr(m_d->err);
+        return;
+    }
+
+    m_d->buffer.mNumberBuffers = 1;
+    m_d->buffer.mBuffers[0].mNumberChannels = m_channelCount;
+    m_d->buffer.mBuffers[0].mDataByteSize = sizeof(float) * m_channelCount * m_d->blockSize;
+    m_d->buffer.mBuffers[0].mData = new float[m_channelCount * m_d->blockSize];
+
+    initialiseDecodeCache();
+
+    if (m_reporter) {
+        connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
+        m_reporter->setMessage
+            (tr("Decoding %1...").arg(QFileInfo(m_path).fileName()));
+    }
+
+    while (1) {
+
+        UInt32 framesRead = m_d->blockSize;
+        m_d->err = ExtAudioFileRead(m_d->file, &framesRead, &m_d->buffer);
+
+        if (m_d->err) {
+            m_error = QString("Error in CoreAudio decoding: code %1")
+                .arg(m_d->err);
+            break;
+        }
+
+        //!!! progress?
+
+        //    std::cerr << "Read " << framesRead << " frames (block size " << m_d->blockSize << ")" << std::endl;
+
+        // buffers are interleaved unless specified otherwise
+        addSamplesToDecodeCache((float *)m_d->buffer.mBuffers[0].mData, framesRead);
+
+        if (framesRead < m_d->blockSize) break;
+    }
+
+    finishDecodeCache();
+    endSerialised();
+
+    m_completion = 100;
+
+    ExtAudioFileDispose(m_d->file);
+}
+
+
+CoreAudioFileReader::~CoreAudioFileReader()
+{
+    std::cerr << "CoreAudioFileReader::~CoreAudioFileReader" << std::endl;
+    delete[] m_d->buffer.mBuffers[0].mData;
+    delete m_d;
+}
+
+void
+CoreAudioFileReader::cancelled()
+{
+  m_cancelled = true;
+}
+
+/*
+void
+CoreAudioFileReader::DecodeThread::run()
+{
+  if (m_reader->m_cacheMode == CacheInTemporaryFile) {
+      m_reader->m_completion = 1;
+      m_reader->startSerialised("QuickTimeFileReader::Decode");
+  }
+
+  while (1) {
+
+      UInt32 framesRead = m_reader->m_d->blockSize;
+      UInt32 extractionFlags = 0;
+      m_reader->m_d->err = MovieAudioExtractionFillBuffer
+          (m_reader->m_d->extractionSessionRef, &framesRead,
+              &m_reader->m_d->buffer, &extractionFlags);
+      if (m_reader->m_d->err) {
+          m_reader->m_error = QString("Error in QuickTime decoding: code %1")
+                                    .arg(m_reader->m_d->err);
+          break;
+      }
+
+      // QuickTime buffers are interleaved unless specified otherwise
+      m_reader->addSamplesToDecodeCache(m_reader->m_d->data, framesRead);
+
+      if (framesRead < m_reader->m_d->blockSize) break;
+  }
+
+  m_reader->finishDecodeCache();
+
+  m_reader->m_d->err = MovieAudioExtractionEnd(m_reader->m_d->extractionSessionRef);
+  if (m_reader->m_d->err) {
+      m_reader->m_error = QString("Error ending QuickTime extraction session: code %1").arg(m_reader->m_d->err);
+  }
+
+  m_reader->m_completion = 100;
+  m_reader->endSerialised();
+} 
+*/
+
+
+void
+CoreAudioFileReader::getSupportedExtensions(std::set<QString> &extensions)
+{
+    extensions.insert("aiff");
+    extensions.insert("aif");
+    extensions.insert("au");
+    extensions.insert("avi");
+    extensions.insert("m4a");
+    extensions.insert("m4b");
+    extensions.insert("m4p");
+    extensions.insert("m4v");
+    extensions.insert("mov");
+    extensions.insert("mp3");
+    extensions.insert("mp4");
+    extensions.insert("wav");
+}
+
+bool
+CoreAudioFileReader::supportsExtension(QString extension)
+{
+    std::set<QString> extensions;
+    getSupportedExtensions(extensions);
+    return (extensions.find(extension.toLower()) != extensions.end());
+}
+
+bool
+CoreAudioFileReader::supportsContentType(QString type)
+{
+    return (type == "audio/x-aiff" ||
+            type == "audio/x-wav" ||
+            type == "audio/mpeg" ||
+            type == "audio/basic" ||
+            type == "audio/x-aac" ||
+            type == "video/mp4" ||
+            type == "video/quicktime");
+}
+
+bool
+CoreAudioFileReader::supports(FileSource &source)
+{
+    return (supportsExtension(source.getExtension()) ||
+            supportsContentType(source.getContentType()));
+}
+
+#endif
+