Mercurial > hg > svcore
view data/fileio/OggVorbisFileReader.cpp @ 492:23945cdd7161
* Update RDF query stuff again so as to set up a temporary datastore
each time we want to query over an rdf file, instead of using rasqal
against the file. Seems the only way to avoid threading and storage
management issues when trying to load from a single-source file and
perform queries against our main datastore at the same time. Maybe.
author | Chris Cannam |
---|---|
date | Mon, 24 Nov 2008 16:26:11 +0000 |
parents | be49bf95d4a5 |
children | bd7c46636bd0 |
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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 file copyright 2006 Chris Cannam. 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_OGGZ #ifdef HAVE_FISHSOUND #include "OggVorbisFileReader.h" #include "base/ProgressReporter.h" #include "base/Profiler.h" #include "system/System.h" #include <sys/types.h> #include <sys/stat.h> #include <sys/mman.h> #include <fcntl.h> #include <cmath> #include <QFileInfo> static int instances = 0; OggVorbisFileReader::OggVorbisFileReader(FileSource source, DecodeMode decodeMode, CacheMode mode, size_t targetRate, ProgressReporter *reporter) : CodedAudioFileReader(mode, targetRate), m_source(source), m_path(source.getLocalFilename()), m_reporter(reporter), m_fileSize(0), m_bytesRead(0), m_commentsRead(false), m_cancelled(false), m_completion(0), m_decodeThread(0) { m_channelCount = 0; m_fileRate = 0; std::cerr << "OggVorbisFileReader::OggVorbisFileReader(" << m_path.toLocal8Bit().data() << "): now have " << (++instances) << " instances" << std::endl; Profiler profiler("OggVorbisFileReader::OggVorbisFileReader", true); QFileInfo info(m_path); m_fileSize = info.size(); if (!(m_oggz = oggz_open(m_path.toLocal8Bit().data(), OGGZ_READ))) { m_error = QString("File %1 is not an OGG file.").arg(m_path); return; } FishSoundInfo fsinfo; m_fishSound = fish_sound_new(FISH_SOUND_DECODE, &fsinfo); fish_sound_set_decoded_callback(m_fishSound, acceptFrames, this); oggz_set_read_callback(m_oggz, -1, readPacket, this); 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())); } while (oggz_read(m_oggz, 1024) > 0); fish_sound_delete(m_fishSound); m_fishSound = 0; oggz_close(m_oggz); m_oggz = 0; if (isDecodeCacheInitialised()) finishDecodeCache(); endSerialised(); } else { if (m_reporter) m_reporter->setProgress(100); while (oggz_read(m_oggz, 1024) > 0 && (m_channelCount == 0 || m_fileRate == 0 || m_sampleRate == 0)); if (m_channelCount > 0) { m_decodeThread = new DecodeThread(this); m_decodeThread->start(); } } } OggVorbisFileReader::~OggVorbisFileReader() { std::cerr << "OggVorbisFileReader::~OggVorbisFileReader(" << m_path.toLocal8Bit().data() << "): now have " << (--instances) << " instances" << std::endl; if (m_decodeThread) { m_cancelled = true; m_decodeThread->wait(); delete m_decodeThread; } } void OggVorbisFileReader::cancelled() { m_cancelled = true; } void OggVorbisFileReader::DecodeThread::run() { if (m_reader->m_cacheMode == CacheInTemporaryFile) { m_reader->m_completion = 1; m_reader->startSerialised("OggVorbisFileReader::Decode"); } while (oggz_read(m_reader->m_oggz, 1024) > 0); fish_sound_delete(m_reader->m_fishSound); m_reader->m_fishSound = 0; oggz_close(m_reader->m_oggz); m_reader->m_oggz = 0; if (m_reader->isDecodeCacheInitialised()) m_reader->finishDecodeCache(); m_reader->m_completion = 100; m_reader->endSerialised(); } int OggVorbisFileReader::readPacket(OGGZ *, ogg_packet *packet, long, void *data) { OggVorbisFileReader *reader = (OggVorbisFileReader *)data; FishSound *fs = reader->m_fishSound; fish_sound_prepare_truncation(fs, packet->granulepos, packet->e_o_s); fish_sound_decode(fs, packet->packet, packet->bytes); reader->m_bytesRead += packet->bytes; // The number of bytes read by this function is smaller than // the file size because of the packet headers int p = lrint(double(reader->m_bytesRead) * 114 / double(reader->m_fileSize)); if (p > 99) p = 99; reader->m_completion = p; reader->progress(p); if (reader->m_fileSize > 0 && reader->m_reporter) { reader->m_reporter->setProgress(p); } if (reader->m_cancelled) return 1; return 0; } int OggVorbisFileReader::acceptFrames(FishSound *fs, float **frames, long nframes, void *data) { OggVorbisFileReader *reader = (OggVorbisFileReader *)data; if (!reader->m_commentsRead) { { const FishSoundComment *comment = fish_sound_comment_first_byname (fs, "TITLE"); if (comment && comment->value) { reader->m_title = QString::fromUtf8(comment->value); } } { const FishSoundComment *comment = fish_sound_comment_first_byname (fs, "ARTIST"); if (comment && comment->value) { reader->m_maker = QString::fromUtf8(comment->value); } } reader->m_commentsRead = true; } if (reader->m_channelCount == 0) { FishSoundInfo fsinfo; fish_sound_command(fs, FISH_SOUND_GET_INFO, &fsinfo, sizeof(FishSoundInfo)); reader->m_fileRate = fsinfo.samplerate; reader->m_channelCount = fsinfo.channels; reader->initialiseDecodeCache(); } if (nframes > 0) { reader->addSamplesToDecodeCache(frames, nframes); } if (reader->m_cancelled) return 1; return 0; } void OggVorbisFileReader::getSupportedExtensions(std::set<QString> &extensions) { extensions.insert("ogg"); } bool OggVorbisFileReader::supportsExtension(QString extension) { std::set<QString> extensions; getSupportedExtensions(extensions); return (extensions.find(extension.toLower()) != extensions.end()); } bool OggVorbisFileReader::supportsContentType(QString type) { return (type == "application/ogg"); } bool OggVorbisFileReader::supports(FileSource &source) { return (supportsExtension(source.getExtension()) || supportsContentType(source.getContentType())); } #endif #endif