Mercurial > hg > svcore
view data/fileio/BQAFileReader.cpp @ 1671:82d03c9661f9 single-point
Rework isReady()/getCompletion() on models. Previously the new overhauled models were implementing getCompletion() but inheriting a version of isReady() (from the Model base) that didn't call it, referring only to isOK(). So they were reporting completion as soon as they had begun. Instead hoist getCompletion() to abstract base and call it from Model::isReady().
author | Chris Cannam |
---|---|
date | Wed, 27 Mar 2019 13:15:16 +0000 |
parents | 8aa1447fe27e |
children | 14747f24ad04 |
line wrap: on
line source
/* -*- 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; 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() { 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"); } 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())); }