mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
274 lines
8.4 KiB
Text
274 lines
8.4 KiB
Text
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE framework.
|
|
Copyright (c) Raw Material Software Limited
|
|
|
|
JUCE is an open source framework subject to commercial or open source
|
|
licensing.
|
|
|
|
By downloading, installing, or using the JUCE framework, or combining the
|
|
JUCE framework with any other source code, object code, content or any other
|
|
copyrightable work, you agree to the terms of the JUCE End User Licence
|
|
Agreement, and all incorporated terms including the JUCE Privacy Policy and
|
|
the JUCE Website Terms of Service, as applicable, which will bind you. If you
|
|
do not agree to the terms of these agreements, we will not license the JUCE
|
|
framework to you, and you must discontinue the installation or download
|
|
process and cease use of the JUCE framework.
|
|
|
|
JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
|
|
JUCE Privacy Policy: https://juce.com/juce-privacy-policy
|
|
JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
|
|
|
|
Or:
|
|
|
|
You may also use this code under the terms of the AGPLv3:
|
|
https://www.gnu.org/licenses/agpl-3.0.en.html
|
|
|
|
THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
|
|
WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
|
|
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
namespace CDReaderHelpers
|
|
{
|
|
inline const XmlElement* getElementForKey (const XmlElement& xml, const String& key)
|
|
{
|
|
for (auto* child : xml.getChildWithTagNameIterator ("key"))
|
|
if (child->getAllSubText().trim() == key)
|
|
return child->getNextElement();
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static int getIntValueForKey (const XmlElement& xml, const String& key, int defaultValue = -1)
|
|
{
|
|
const XmlElement* const block = getElementForKey (xml, key);
|
|
return block != nullptr ? block->getAllSubText().trim().getIntValue() : defaultValue;
|
|
}
|
|
|
|
// Get the track offsets for a CD given an XmlElement representing its TOC.Plist.
|
|
// Returns NULL on success, otherwise a const char* representing an error.
|
|
static const char* getTrackOffsets (XmlDocument& xmlDocument, Array<int>& offsets)
|
|
{
|
|
const std::unique_ptr<XmlElement> xml (xmlDocument.getDocumentElement());
|
|
if (xml == nullptr)
|
|
return "Couldn't parse XML in file";
|
|
|
|
const XmlElement* const dict = xml->getChildByName ("dict");
|
|
if (dict == nullptr)
|
|
return "Couldn't get top level dictionary";
|
|
|
|
const XmlElement* const sessions = getElementForKey (*dict, "Sessions");
|
|
if (sessions == nullptr)
|
|
return "Couldn't find sessions key";
|
|
|
|
const XmlElement* const session = sessions->getFirstChildElement();
|
|
if (session == nullptr)
|
|
return "Couldn't find first session";
|
|
|
|
const int leadOut = getIntValueForKey (*session, "Leadout Block");
|
|
if (leadOut < 0)
|
|
return "Couldn't find Leadout Block";
|
|
|
|
const XmlElement* const trackArray = getElementForKey (*session, "Track Array");
|
|
if (trackArray == nullptr)
|
|
return "Couldn't find Track Array";
|
|
|
|
for (auto* track : trackArray->getChildIterator())
|
|
{
|
|
const int trackValue = getIntValueForKey (*track, "Start Block");
|
|
if (trackValue < 0)
|
|
return "Couldn't find Start Block in the track";
|
|
|
|
offsets.add (trackValue * AudioCDReader::samplesPerFrame - 88200);
|
|
}
|
|
|
|
offsets.add (leadOut * AudioCDReader::samplesPerFrame - 88200);
|
|
return nullptr;
|
|
}
|
|
|
|
static void findDevices (Array<File>& cds)
|
|
{
|
|
File volumes ("/Volumes");
|
|
volumes.findChildFiles (cds, File::findDirectories, false);
|
|
|
|
for (int i = cds.size(); --i >= 0;)
|
|
if (! cds.getReference (i).getChildFile (".TOC.plist").exists())
|
|
cds.remove (i);
|
|
}
|
|
|
|
struct TrackSorter
|
|
{
|
|
static int getCDTrackNumber (const File& file)
|
|
{
|
|
return file.getFileName().initialSectionContainingOnly ("0123456789").getIntValue();
|
|
}
|
|
|
|
static int compareElements (const File& first, const File& second)
|
|
{
|
|
const int firstTrack = getCDTrackNumber (first);
|
|
const int secondTrack = getCDTrackNumber (second);
|
|
|
|
jassert (firstTrack > 0 && secondTrack > 0);
|
|
|
|
return firstTrack - secondTrack;
|
|
}
|
|
};
|
|
}
|
|
|
|
//==============================================================================
|
|
StringArray AudioCDReader::getAvailableCDNames()
|
|
{
|
|
Array<File> cds;
|
|
CDReaderHelpers::findDevices (cds);
|
|
|
|
StringArray names;
|
|
|
|
for (int i = 0; i < cds.size(); ++i)
|
|
names.add (cds.getReference (i).getFileName());
|
|
|
|
return names;
|
|
}
|
|
|
|
AudioCDReader* AudioCDReader::createReaderForCD (const int index)
|
|
{
|
|
Array<File> cds;
|
|
CDReaderHelpers::findDevices (cds);
|
|
|
|
if (cds[index].exists())
|
|
return new AudioCDReader (cds[index]);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
AudioCDReader::AudioCDReader (const File& volume)
|
|
: AudioFormatReader (nullptr, "CD Audio"),
|
|
volumeDir (volume),
|
|
currentReaderTrack (-1)
|
|
{
|
|
sampleRate = 44100.0;
|
|
bitsPerSample = 16;
|
|
numChannels = 2;
|
|
usesFloatingPointData = false;
|
|
|
|
refreshTrackLengths();
|
|
}
|
|
|
|
AudioCDReader::~AudioCDReader()
|
|
{
|
|
}
|
|
|
|
void AudioCDReader::refreshTrackLengths()
|
|
{
|
|
tracks.clear();
|
|
trackStartSamples.clear();
|
|
lengthInSamples = 0;
|
|
|
|
volumeDir.findChildFiles (tracks, File::findFiles | File::ignoreHiddenFiles, false, "*.aiff");
|
|
|
|
CDReaderHelpers::TrackSorter sorter;
|
|
tracks.sort (sorter);
|
|
|
|
const File toc (volumeDir.getChildFile (".TOC.plist"));
|
|
|
|
if (toc.exists())
|
|
{
|
|
XmlDocument doc (toc);
|
|
[[maybe_unused]] const char* error = CDReaderHelpers::getTrackOffsets (doc, trackStartSamples);
|
|
|
|
lengthInSamples = trackStartSamples.getLast() - trackStartSamples.getFirst();
|
|
}
|
|
}
|
|
|
|
bool AudioCDReader::readSamples (int* const* destSamples, int numDestChannels, int startOffsetInDestBuffer,
|
|
int64 startSampleInFile, int numSamples)
|
|
{
|
|
while (numSamples > 0)
|
|
{
|
|
int track = -1;
|
|
|
|
for (int i = 0; i < trackStartSamples.size() - 1; ++i)
|
|
{
|
|
if (startSampleInFile < trackStartSamples.getUnchecked (i + 1))
|
|
{
|
|
track = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (track < 0)
|
|
return false;
|
|
|
|
if (track != currentReaderTrack)
|
|
{
|
|
reader = nullptr;
|
|
|
|
if (auto in = tracks [track].createInputStream())
|
|
{
|
|
BufferedInputStream* const bin = new BufferedInputStream (in.release(), 65536, true);
|
|
|
|
AiffAudioFormat format;
|
|
reader.reset (format.createReaderFor (bin, true));
|
|
|
|
if (reader == nullptr)
|
|
currentReaderTrack = -1;
|
|
else
|
|
currentReaderTrack = track;
|
|
}
|
|
}
|
|
|
|
if (reader == nullptr)
|
|
return false;
|
|
|
|
const int startPos = (int) (startSampleInFile - trackStartSamples.getUnchecked (track));
|
|
const int numAvailable = (int) jmin ((int64) numSamples, reader->lengthInSamples - startPos);
|
|
|
|
reader->readSamples (destSamples, numDestChannels, startOffsetInDestBuffer, startPos, numAvailable);
|
|
|
|
numSamples -= numAvailable;
|
|
startSampleInFile += numAvailable;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool AudioCDReader::isCDStillPresent() const
|
|
{
|
|
return volumeDir.exists();
|
|
}
|
|
|
|
void AudioCDReader::ejectDisk()
|
|
{
|
|
JUCE_AUTORELEASEPOOL
|
|
{
|
|
[[NSWorkspace sharedWorkspace] unmountAndEjectDeviceAtPath: juceStringToNS (volumeDir.getFullPathName())];
|
|
}
|
|
}
|
|
|
|
bool AudioCDReader::isTrackAudio (int trackNum) const
|
|
{
|
|
return tracks [trackNum].hasFileExtension (".aiff");
|
|
}
|
|
|
|
void AudioCDReader::enableIndexScanning (bool)
|
|
{
|
|
// any way to do this on a Mac??
|
|
}
|
|
|
|
int AudioCDReader::getLastIndex() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
Array<int> AudioCDReader::findIndexesInTrack (const int /*trackNumber*/)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
} // namespace juce
|