Chris@148: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@148: 
Chris@148: /*
Chris@148:     Sonic Visualiser
Chris@148:     An audio file viewer and annotation editor.
Chris@148:     Centre for Digital Music, Queen Mary, University of London.
Chris@148:     This file copyright 2006 Chris Cannam.
Chris@148:     
Chris@148:     This program is free software; you can redistribute it and/or
Chris@148:     modify it under the terms of the GNU General Public License as
Chris@148:     published by the Free Software Foundation; either version 2 of the
Chris@148:     License, or (at your option) any later version.  See the file
Chris@148:     COPYING included with this distribution for more information.
Chris@148: */
Chris@148: 
Chris@148: #ifdef HAVE_OGGZ
Chris@148: #ifdef HAVE_FISHSOUND
Chris@148: 
Chris@148: #include "OggVorbisFileReader.h"
Chris@148: #include "base/Profiler.h"
Chris@150: #include "system/System.h"
Chris@148: 
Chris@148: #include <sys/types.h>
Chris@148: #include <sys/stat.h>
Chris@148: #include <sys/mman.h>
Chris@148: #include <fcntl.h>
Chris@148: #include <cmath>
Chris@148: 
Chris@148: #include <QApplication>
Chris@148: #include <QFileInfo>
Chris@148: #include <QProgressDialog>
Chris@148: 
Chris@148: static int instances = 0;
Chris@148: 
Chris@263: OggVorbisFileReader::OggVorbisFileReader(QString path,
Chris@263:                                          DecodeMode decodeMode,
Chris@148:                                          CacheMode mode) :
Chris@148:     CodedAudioFileReader(mode),
Chris@148:     m_path(path),
Chris@148:     m_progress(0),
Chris@148:     m_fileSize(0),
Chris@148:     m_bytesRead(0),
Chris@271:     m_commentsRead(false),
Chris@263:     m_cancelled(false),
Chris@265:     m_completion(0),
Chris@263:     m_decodeThread(0)
Chris@148: {
Chris@148:     m_frameCount = 0;
Chris@148:     m_channelCount = 0;
Chris@148:     m_sampleRate = 0;
Chris@148: 
Chris@148:     std::cerr << "OggVorbisFileReader::OggVorbisFileReader(" << path.toLocal8Bit().data() << "): now have " << (++instances) << " instances" << std::endl;
Chris@148: 
Chris@148:     Profiler profiler("OggVorbisFileReader::OggVorbisFileReader", true);
Chris@148: 
Chris@148:     QFileInfo info(path);
Chris@148:     m_fileSize = info.size();
Chris@148: 
Chris@263:     if (!(m_oggz = oggz_open(path.toLocal8Bit().data(), OGGZ_READ))) {
Chris@148: 	m_error = QString("File %1 is not an OGG file.").arg(path);
Chris@148: 	return;
Chris@148:     }
Chris@148: 
Chris@148:     FishSoundInfo fsinfo;
Chris@148:     m_fishSound = fish_sound_new(FISH_SOUND_DECODE, &fsinfo);
Chris@148: 
Chris@148:     fish_sound_set_decoded_callback(m_fishSound, acceptFrames, this);
Chris@263:     oggz_set_read_callback(m_oggz, -1, readPacket, this);
Chris@148: 
Chris@263:     if (decodeMode == DecodeAtOnce) {
Chris@263: 
Chris@148: 	m_progress = new QProgressDialog
Chris@186: 	    (QObject::tr("Decoding %1...").arg(QFileInfo(path).fileName()),
Chris@148: 	     QObject::tr("Stop"), 0, 100);
Chris@148: 	m_progress->hide();
Chris@148: 
Chris@263:         while (oggz_read(m_oggz, 1024) > 0);
Chris@263:         
Chris@263:         fish_sound_delete(m_fishSound);
Chris@263:         m_fishSound = 0;
Chris@263:         oggz_close(m_oggz);
Chris@263:         m_oggz = 0;
Chris@148: 
Chris@263:         if (isDecodeCacheInitialised()) finishDecodeCache();
Chris@148: 
Chris@281:         delete m_progress;
Chris@281:         m_progress = 0;
Chris@148: 
Chris@263:     } else {
Chris@263: 
Chris@263:         while (oggz_read(m_oggz, 1024) > 0 &&
Chris@263:                m_channelCount == 0);
Chris@263: 
Chris@263:         if (m_channelCount > 0) {
Chris@263:             m_decodeThread = new DecodeThread(this);
Chris@263:             m_decodeThread->start();
Chris@263:         }
Chris@148:     }
Chris@148: }
Chris@148: 
Chris@148: OggVorbisFileReader::~OggVorbisFileReader()
Chris@148: {
Chris@148:     std::cerr << "OggVorbisFileReader::~OggVorbisFileReader(" << m_path.toLocal8Bit().data() << "): now have " << (--instances) << " instances" << std::endl;
Chris@263:     if (m_decodeThread) {
Chris@265:         m_cancelled = true;
Chris@263:         m_decodeThread->wait();
Chris@263:         delete m_decodeThread;
Chris@263:     }
Chris@148: }
Chris@148: 
Chris@263: void
Chris@263: OggVorbisFileReader::DecodeThread::run()
Chris@263: {
Chris@263:     while (oggz_read(m_reader->m_oggz, 1024) > 0);
Chris@263:         
Chris@263:     fish_sound_delete(m_reader->m_fishSound);
Chris@263:     m_reader->m_fishSound = 0;
Chris@263:     oggz_close(m_reader->m_oggz);
Chris@263:     m_reader->m_oggz = 0;
Chris@263:     
Chris@263:     if (m_reader->isDecodeCacheInitialised()) m_reader->finishDecodeCache();
Chris@265:     m_reader->m_completion = 100;
Chris@263: } 
Chris@263: 
Chris@148: int
Chris@148: OggVorbisFileReader::readPacket(OGGZ *, ogg_packet *packet, long, void *data)
Chris@148: {
Chris@148:     OggVorbisFileReader *reader = (OggVorbisFileReader *)data;
Chris@148:     FishSound *fs = reader->m_fishSound;
Chris@148: 
Chris@148:     fish_sound_prepare_truncation(fs, packet->granulepos, packet->e_o_s);
Chris@148:     fish_sound_decode(fs, packet->packet, packet->bytes);
Chris@148: 
Chris@148:     reader->m_bytesRead += packet->bytes;
Chris@265: 
Chris@265:     // The number of bytes read by this function is smaller than
Chris@265:     // the file size because of the packet headers
Chris@265:     int progress = lrint(double(reader->m_bytesRead) * 114 /
Chris@265:                          double(reader->m_fileSize));
Chris@265:     if (progress > 99) progress = 99;
Chris@265:     reader->m_completion = progress;
Chris@148:     
Chris@148:     if (reader->m_fileSize > 0 && reader->m_progress) {
Chris@148: 	if (progress > reader->m_progress->value()) {
Chris@148: 	    reader->m_progress->setValue(progress);
Chris@148: 	    reader->m_progress->show();
Chris@148: 	    reader->m_progress->raise();
Chris@148: 	    qApp->processEvents();
Chris@148: 	    if (reader->m_progress->wasCanceled()) {
Chris@148: 		reader->m_cancelled = true;
Chris@148: 	    }
Chris@148: 	}
Chris@265:     }
Chris@148: 
Chris@148:     if (reader->m_cancelled) return 1;
Chris@148:     return 0;
Chris@148: }
Chris@148: 
Chris@148: int
Chris@148: OggVorbisFileReader::acceptFrames(FishSound *fs, float **frames, long nframes,
Chris@148: 				  void *data)
Chris@148: {
Chris@148:     OggVorbisFileReader *reader = (OggVorbisFileReader *)data;
Chris@148: 
Chris@271:     if (!reader->m_commentsRead) {
Chris@271:         const FishSoundComment *comment = fish_sound_comment_first_byname
Chris@271:             (fs, "TITLE");
Chris@271:         if (comment && comment->value) {
Chris@271:             reader->m_title = QString::fromUtf8(comment->value);
Chris@271:         }
Chris@271:         reader->m_commentsRead = true;
Chris@271:     }
Chris@271: 
Chris@148:     if (reader->m_channelCount == 0) {
Chris@148: 	FishSoundInfo fsinfo;
Chris@148: 	fish_sound_command(fs, FISH_SOUND_GET_INFO,
Chris@148: 			   &fsinfo, sizeof(FishSoundInfo));
Chris@148: 	reader->m_channelCount = fsinfo.channels;
Chris@148: 	reader->m_sampleRate = fsinfo.samplerate;
Chris@148:         reader->initialiseDecodeCache();
Chris@148:     }
Chris@148: 
Chris@148:     if (nframes > 0) {
Chris@148: 
Chris@148: 	reader->m_frameCount += nframes;
Chris@148:     
Chris@148: 	for (long i = 0; i < nframes; ++i) {
Chris@148: 	    for (size_t c = 0; c < reader->m_channelCount; ++c) {
Chris@148:                 reader->addSampleToDecodeCache(frames[c][i]);
Chris@148: 	    }
Chris@148: 	}
Chris@148: 
Chris@148: 	MUNLOCK_SAMPLEBLOCK(reader->m_data);
Chris@148:     }
Chris@148: 
Chris@148:     if (reader->m_cancelled) return 1;
Chris@148:     return 0;
Chris@148: }
Chris@148: 
Chris@157: void
Chris@157: OggVorbisFileReader::getSupportedExtensions(std::set<QString> &extensions)
Chris@157: {
Chris@157:     extensions.insert("ogg");
Chris@157: }
Chris@157: 
Chris@148: #endif
Chris@148: #endif