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/*
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.
*/
#include <QDateTime>
#include <QDir>
#include <QImage>
#include <sys/inotify.h>
#include <unistd.h>
#include <poll.h>
#include "smdirmodel.h"
#include "smdirwatcher.h"
#include "smtreeitem.h"
#include "helper.h"
SmDirWatcher::SmDirWatcher(int numFields, QObject *parent) : QThread(parent), mFd(0), mDescr(0), mNumFields(numFields), mExpensiveOps(true) {
mBufLen = 1024 * (sizeof(struct inotify_event) + 16);
mINdata = new char[mBufLen];
mFd = inotify_init();
mAsyncPool = new QThreadPool(this);
}
void SmDirWatcher::setDir(const QString &dir){
if(mDescr){
inotify_rm_watch(mFd, mDescr); //generates IN_IGNORE ???
}
foreach(AsyncTask *s, mAsyncTasks){
s->skipMe();
}
mAsyncPool->waitForDone();
foreach(AsyncTask *s, mAsyncTasks){
s->deleteLater();
}
mAsyncTasks.clear();
mCurrent = dir;
QDir d(mCurrent);
SmTreeItem *rootItem = new SmTreeItem(mNumFields);
foreach(QFileInfo fi, d.entryInfoList()){
if(fi.fileName() == "." || fi.fileName() == ".."){
continue;
}
QList<QVariant> data = generalData(fi.absoluteFilePath());
QString mime = data.at(SmDirModel::Type).toString();
SmTreeItem *newItem = new SmTreeItem(data, rootItem);
rootItem->appendChild(newItem);
if(mExpensiveOps){
Md5Summer *s = new Md5Summer(fi.absoluteFilePath());
s->setAutoDelete(false);
connect(s, SIGNAL(md5sumDone(QString,QString)), this, SIGNAL(setMd5Sum(QString,QString)));
mAsyncTasks.append(s);
if(mime.startsWith("video")){
FfmpegGatherer *g = new FfmpegGatherer(fi.absoluteFilePath());
g->setAutoDelete(false);
connect(g, SIGNAL(ffmpegDone(QString,QVariantMap)), this, SIGNAL(setFfmpeg(QString,QVariantMap)));
mAsyncTasks.append(g);
}else if(mime.startsWith("image")){
PicSizeGatherer *pg = new PicSizeGatherer(fi.absoluteFilePath());
pg->setAutoDelete(false);
connect(pg, SIGNAL(picSizeDone(QString,QVariant)), this, SIGNAL(setPicSize(QString,QVariant)));
mAsyncTasks.append(pg);
}
}
}
emit population(rootItem);
/* mask rationale:
* IN_DELETE_SELF cannot happen since we're only
* watching one directory at all time.
* We don't care about the other events
*/
mDescr = inotify_add_watch(mFd, qPrintable(dir), IN_CLOSE_WRITE | IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVED_FROM | IN_MOVED_TO);
}
void SmDirWatcher::startAsyncJobs(){
foreach(AsyncTask *s, mAsyncTasks){
mAsyncPool->start(s);
}
}
void SmDirWatcher::gatherAsync(const QString &path){
if(!mExpensiveOps){
return;
}
QString mimeType = Helper::mimeType(path);
Md5Summer *s = new Md5Summer(path);
connect(s, SIGNAL(md5sumDone(QString,QString)), this, SIGNAL(setMd5Sum(QString,QString)));
mAsyncPool->start(s);
if(mimeType.startsWith("video")){
FfmpegGatherer *g = new FfmpegGatherer(path);
connect(g, SIGNAL(ffmpegDone(QString,QVariantMap)), this, SIGNAL(setFfmpeg(QString,QVariantMap)));
mAsyncPool->start(g);
}else if(mimeType.startsWith("image")){
PicSizeGatherer *ps = new PicSizeGatherer(path);
connect(ps, SIGNAL(picSizeDone(QString,QVariant)), this, SIGNAL(setPicSize(QString,QVariant)));
mAsyncPool->start(ps);
}
}
void SmDirWatcher::setExpensiveOps(bool expensiveOps){
mExpensiveOps = expensiveOps;
}
QList<QVariant> SmDirWatcher::generalData(const QString &path){
QFileInfo fi(path);
QList<QVariant> data;
data << fi.fileName() << fi.size();
QString mime = Helper::mimeType(fi.absoluteFilePath());
data << mime;
data << fi.lastModified();
data << QVariant() << QVariant() << QVariant();
data << fi.absoluteFilePath() << 0;
return data;
}
void SmDirWatcher::run(){
struct pollfd pfd[1];
pfd[0].fd = mFd;
pfd[0].events = POLLIN;
pfd[0].revents = 0;
int pr = poll(pfd, 1, 0);
if(pr <= 0){
return;
}
int r = read(mFd, mINdata, mBufLen);
if(r <= 0){
return;
}
int i = 0;
while(i < r){
inotify_event *e = reinterpret_cast<inotify_event*>(&mINdata[i]);
if((!e->len) || (e->mask & IN_IGNORED)){
i += sizeof(inotify_event) + e->len;
continue;
}
quint32 mask = e->mask;
QString name = QString("%1/%2").arg(mCurrent).arg(e->name);
QList<QVariant> d = generalData(name);
if(mask & IN_CREATE || mask & IN_MOVED_TO){
emit newData(d, Added);
}else if(mask & IN_DELETE || mask & IN_MOVED_FROM){
emit newData(d, Deleted);
}else if(mask & IN_MODIFY){
emit newData(d, Modified);
}else if(mask & IN_CLOSE_WRITE){
emit newData(d, CloseWrite);
}
i += sizeof(inotify_event) + e->len;
}
}
void SmDirWatcher::stop(){
quit();
wait();
}
AsyncTask::AsyncTask(const QString &path) : mSkip(false), mPath(path) {}
bool AsyncTask::skipMe(){
if(mStatusMx.tryLock()){
mSkip = true;
mStatusMx.unlock();
return true;
}
return false;
}
#include <QDebug>
Md5Summer::Md5Summer(const QString &path) : AsyncTask(path) {}
void Md5Summer::run(){
mStatusMx.lock();
bool skip = mSkip;
mStatusMx.unlock();
if(skip){
return;
}
QString md5 = Helper::md5Sum(mPath);
emit md5sumDone(mPath, md5);
}
FfmpegGatherer::FfmpegGatherer(const QString &path) : AsyncTask(path) {}
void FfmpegGatherer::run(){
mStatusMx.lock();
bool skip = mSkip;
mStatusMx.unlock();
if(skip){
return;
}
QVariantMap retval = Helper::ffmpegData(mPath);
emit ffmpegDone(mPath, retval);
}
PicSizeGatherer::PicSizeGatherer(const QString &path) : AsyncTask(path) {}
void PicSizeGatherer::run(){
mStatusMx.lock();
bool skip = mSkip;
mStatusMx.unlock();
if(skip){
return;
}
QVariant retval = Helper::picSize(mPath);
emit picSizeDone(mPath, retval);
}
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