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/* -*- 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 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.
*/
#include "BQAFileReader.h"
#include <bqaudiostream/AudioReadStreamFactory.h>
#include <bqaudiostream/AudioReadStream.h>
#include <bqaudiostream/Exceptions.h>
#include "base/Profiler.h"
#include "base/ProgressReporter.h"
#include <QFileInfo>
using namespace std;
namespace sv {
BQAFileReader::BQAFileReader(FileSource source,
DecodeMode decodeMode,
CacheMode mode,
sv_samplerate_t targetRate,
bool normalised,
ProgressReporter *reporter) :
CodedAudioFileReader(mode, targetRate, normalised),
m_source(source),
m_path(source.getLocalFilename()),
m_cancelled(false),
m_completion(0),
m_reporter(reporter),
m_decodeThread(0)
{
SVDEBUG << "BQAFileReader: local path: \"" << m_path
<< "\", decode mode: " << decodeMode << " ("
<< (decodeMode == DecodeAtOnce ? "DecodeAtOnce" : "DecodeThreaded")
<< ")" << endl;
m_channelCount = 0;
m_fileRate = 0;
Profiler profiler("BQAFileReader::BQAFileReader");
try {
m_stream = breakfastquay::AudioReadStreamFactory::createReadStream
(m_path.toUtf8().data());
} catch (const std::exception &e) {
m_error = e.what();
SVDEBUG << "BQAFileReader: createReadStream failed: " << m_error << endl;
m_stream = 0;
return;
}
m_channelCount = int(m_stream->getChannelCount());
m_fileRate = sv_samplerate_t(m_stream->getSampleRate());
m_title = QString::fromUtf8(m_stream->getTrackName().c_str());
m_maker = QString::fromUtf8(m_stream->getArtistName().c_str());
initialiseDecodeCache();
if (decodeMode == DecodeAtOnce) {
if (m_reporter) {
connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
m_reporter->setMessage
(tr("Decoding %1...").arg(QFileInfo(m_path).fileName()));
}
sv_frame_t blockSize = 65536;
floatvec_t block(blockSize * m_channelCount, 0.f);
while (true) {
try {
sv_frame_t retrieved =
m_stream->getInterleavedFrames(blockSize, block.data());
addSamplesToDecodeCache(block.data(), retrieved);
if (retrieved < blockSize) {
break;
}
} catch (const breakfastquay::InvalidFileFormat &f) {
m_error = f.what();
SVDEBUG << "BQAFileReader: init failed: " << m_error << endl;
break;
}
if (m_cancelled) break;
}
if (isDecodeCacheInitialised()) finishDecodeCache();
endSerialised();
if (m_reporter) m_reporter->setProgress(100);
delete m_stream;
m_stream = 0;
} else {
if (m_reporter) m_reporter->setProgress(100);
m_decodeThread = new DecodeThread(this);
m_decodeThread->start();
}
}
BQAFileReader::~BQAFileReader()
{
Profiler profiler("BQAFileReader::~BQAFileReader");
if (m_decodeThread) {
m_cancelled = true;
m_decodeThread->wait();
delete m_decodeThread;
}
delete m_stream;
}
void
BQAFileReader::cancelled()
{
m_cancelled = true;
}
void
BQAFileReader::DecodeThread::run()
{
if (m_reader->m_cacheMode == CacheInTemporaryFile) {
m_reader->startSerialised("BQAFileReader::Decode",
&m_reader->m_cancelled);
if (m_reader->m_cancelled) {
return;
}
}
sv_frame_t blockSize = 65536;
floatvec_t block(blockSize * m_reader->getChannelCount(), 0.f);
while (true) {
try {
sv_frame_t retrieved =
m_reader->m_stream->getInterleavedFrames
(blockSize, block.data());
m_reader->addSamplesToDecodeCache(block.data(), retrieved);
if (retrieved < blockSize) {
break;
}
} catch (const breakfastquay::InvalidFileFormat &f) {
m_reader->m_error = f.what();
SVDEBUG << "BQAFileReader: decode failed: " << m_reader->m_error << endl;
break;
}
if (m_reader->m_cancelled) break;
}
if (m_reader->isDecodeCacheInitialised()) m_reader->finishDecodeCache();
m_reader->m_completion = 100;
m_reader->endSerialised();
delete m_reader->m_stream;
m_reader->m_stream = 0;
}
void
BQAFileReader::getSupportedExtensions(set<QString> &extensions)
{
vector<string> exts =
breakfastquay::AudioReadStreamFactory::getSupportedFileExtensions();
for (auto e: exts) {
extensions.insert(QString::fromUtf8(e.c_str()));
}
}
bool
BQAFileReader::supportsExtension(QString extension)
{
set<QString> extensions;
getSupportedExtensions(extensions);
return (extensions.find(extension.toLower()) != extensions.end());
}
bool
BQAFileReader::supportsContentType(QString type)
{
// extremely optimistic, but it's better than rejecting everything
//!!! todo: be more sensible
return (type.startsWith("audio/"));
}
bool
BQAFileReader::supports(FileSource &source)
{
return (supportsExtension(source.getExtension()) ||
supportsContentType(source.getContentType()));
}
} // end namespace sv
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