Mercurial > hg > svcore
view data/fileio/OggVorbisFileReader.cpp @ 537:3cc4b7cd2aa5
* Merge from one-fftdataserver-per-fftmodel branch. This bit of
reworking (which is not described very accurately by the title of
the branch) turns the MatrixFile object into something that either
reads or writes, but not both, and separates the FFT file cache
reader and writer implementations separately. This allows the
FFT data server to have a single thread owning writers and one reader
per "customer" thread, and for all locking to be vastly simplified
and concentrated in the data server alone (because none of the
classes it makes use of is used in more than one thread at a time).
The result is faster and more trustworthy code.
author | Chris Cannam |
---|---|
date | Tue, 27 Jan 2009 13:25:10 +0000 |
parents | 12608139f6bc |
children | dfc4dd561bb6 |
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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 <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