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mymodel.cpp
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/****************************************************************************
* This file is part of qtFM, a simple, fast file manager.
* Copyright (C) 2010,2011,2012 Wittfella
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Contact e-mail: [email protected]
*
****************************************************************************/
#include "mymodel.h"
#include <sys/inotify.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <QApplication>
#include <QMessageBox>
#include "fileutils.h"
#ifdef WITH_MAGICK
#include <Magick++.h>
#endif
#ifdef WITH_FFMPEG
extern "C" {
#include <libavutil/avutil.h>
#include <libavutil/imgutils.h>
#include <libavdevice/avdevice.h>
#include <libswscale/swscale.h>
}
#endif
/**
* @brief Creates file system model
* @param realMime
* @param mimeUtils
*/
myModel::myModel(bool realMime, MimeUtils *mimeUtils, QObject *parent)
: QAbstractItemModel(parent) {
#ifdef WITH_MAGICK
Magick::InitializeMagick(Q_NULLPTR);
#endif
#ifdef WITH_FFMPEG
av_register_all();
avdevice_register_all();
avcodec_register_all();
avformat_network_init();
#ifdef QT_NO_DEBUG
av_log_set_level(AV_LOG_QUIET);
#endif
#endif
// Stores mime utils
mimeUtilsPtr = mimeUtils;
// Initialization
mimeGeneric = new QHash<QString,QString>;
mimeGlob = new QHash<QString,QString>;
mimeIcons = new QHash<QString,QIcon>;
folderIcons = new QHash<QString,QIcon>;
thumbs = new QHash<QString,QByteArray>;
icons = new QCache<QString,QIcon>;
icons->setMaxCost(500);
// Loads cached mime icons
QFile fileIcons(QString("%1/file.cache").arg(Common::configDir()));
if (fileIcons.open(QIODevice::ReadOnly)) {
QDataStream out(&fileIcons);
out >> *mimeIcons;
fileIcons.close();
}
// Loads folder cache
fileIcons.setFileName(QString("%1/folder.cache").arg(Common::configDir()));
if (fileIcons.open(QIODevice::ReadOnly)) {
QDataStream out(&fileIcons);
out.setDevice(&fileIcons);
out >> *folderIcons;
fileIcons.close();
}
// Create root item
rootItem = new myModelItem(QFileInfo("/"), new myModelItem(QFileInfo(), Q_NULLPTR));
currentRootPath = "/";
QDir root("/");
QFileInfoList drives = root.entryInfoList( QDir::AllEntries | QDir::Files
| QDir::Hidden | QDir::System
| QDir::NoDotAndDotDot);
// Create item per each drive
foreach (QFileInfo drive, drives) {
new myModelItem(drive, rootItem);
}
rootItem->walked = true;
rootItem = rootItem->parent();
iconFactory = new QFileIconProvider();
inotifyFD = inotify_init();
notifier = new QSocketNotifier(inotifyFD, QSocketNotifier::Read, this);
connect(notifier, SIGNAL(activated(int)), this, SLOT(notifyChange()));
connect(&eventTimer,SIGNAL(timeout()),this,SLOT(eventTimeout()));
realMimeTypes = realMime;
}
//---------------------------------------------------------------------------
/**
* @brief Deletes model of file system
*/
myModel::~myModel() {
delete mimeGeneric;
delete mimeGlob;
delete mimeIcons;
delete folderIcons;
delete thumbs;
delete icons;
delete rootItem;
delete iconFactory;
}
//---------------------------------------------------------------------------
/**
* @brief Deletes icon cache
*/
void myModel::clearIconCache() {
folderIcons->clear();
mimeIcons->clear();
QFile(QString("%1/folder.cache").arg(Common::configDir())).remove();
QFile(QString("%1/file.cache").arg(Common::configDir())).remove();
}
void myModel::forceRefresh()
{
qDebug() << "force refresh model view";
beginResetModel();
endResetModel();
}
//---------------------------------------------------------------------------
/**
* @brief Sets whether use real mime types or not
* @param realMimeTypes
*/
void myModel::setRealMimeTypes(bool realMimeTypes) {
this->realMimeTypes = realMimeTypes;
}
//---------------------------------------------------------------------------
/**
* @brief Returns true if real mime types are used
* @return true if real mime types are used
*/
bool myModel::isRealMimeTypes() const {
return realMimeTypes;
}
//---------------------------------------------------------------------------
/**
* @brief Returns mime utils
* @return mime utils
*/
MimeUtils* myModel::getMimeUtils() const {
return mimeUtilsPtr;
}
//---------------------------------------------------------------------------
QModelIndex myModel::index(int row, int column, const QModelIndex &parent) const
{
if(parent.isValid() && parent.column() != 0) { return QModelIndex(); }
myModelItem *parentItem = static_cast<myModelItem*>(parent.internalPointer());
if(!parentItem) { parentItem = rootItem; }
myModelItem *childItem = parentItem->childAt(row);
if(childItem) { return createIndex(row, column, childItem); }
return QModelIndex();
}
//---------------------------------------------------------------------------------------
QModelIndex myModel::index(const QString& path) const
{
myModelItem *item = rootItem->matchPath(path.split(SEPARATOR),0);
if(item) { return createIndex(item->childNumber(),0,item); }
return QModelIndex();
}
//---------------------------------------------------------------------------------------
QModelIndex myModel::parent(const QModelIndex &index) const
{
if(!index.isValid()) { return QModelIndex(); }
myModelItem *childItem = static_cast<myModelItem*>(index.internalPointer());
if(!childItem) { return QModelIndex(); }
myModelItem *parentItem = childItem->parent();
if (!parentItem || parentItem == rootItem) { return QModelIndex(); }
return createIndex(parentItem->childNumber(), 0, parentItem);
}
//---------------------------------------------------------------------------------------
bool myModel::isDir(const QModelIndex &index)
{
if (!index.isValid()) { return false; }
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
if(item && item != rootItem) { return item->fileInfo().isDir(); }
return false;
}
//---------------------------------------------------------------------------------------
QFileInfo myModel::fileInfo(const QModelIndex &index)
{
if (!index.isValid()) { return QFileInfo(); }
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
if(item) { return item->fileInfo(); }
return QFileInfo();
}
//---------------------------------------------------------------------------------------
qint64 myModel::size(const QModelIndex &index)
{
if (!index.isValid()) { return 0; }
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
if(item) { return item->fileInfo().size(); }
return 0;
}
//---------------------------------------------------------------------------------------
QString myModel::fileName(const QModelIndex &index)
{
if (!index.isValid()) { return QString(); }
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
if(item) { return item->fileName(); }
return QString();
}
//---------------------------------------------------------------------------------------
QString myModel::filePath(const QModelIndex &index)
{
if (!index.isValid()) { return QString(); }
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
if(item) { return item->absoluteFilePath(); }
return QString();
}
//---------------------------------------------------------------------------------------
QString myModel::getMimeType(const QModelIndex &index)
{
if (!index.isValid()) { return QString(); }
qDebug() << "myModel getMimeType";
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
if(item->mMimeType.isNull()) {
if(realMimeTypes) { item->mMimeType = mimeUtilsPtr->getMimeType(item->absoluteFilePath()); }
else {
if(item->fileInfo().isDir()) item->mMimeType = "folder";
else item->mMimeType = item->fileInfo().suffix();
if(item->mMimeType.isNull()) item->mMimeType = "file";
}
}
//qDebug() << "item mime" << item->absoluteFilePath() << item->mMimeType;
return item->mMimeType;
}
//---------------------------------------------------------------------------------------
void myModel::notifyChange()
{
notifier->setEnabled(0);
int buffSize = 0;
ioctl(inotifyFD, FIONREAD, (char *) &buffSize);
QByteArray buffer;
buffer.resize(buffSize);
read(inotifyFD,buffer.data(),buffSize);
const char *at = buffer.data();
const char * const end = at + buffSize;
while (at < end) {
const inotify_event *event = reinterpret_cast<const inotify_event *>(at);
int w = event->wd;
lastEventFilename = event->name;
if (eventTimer.isActive()) {
if (w == lastEventID) {
eventTimer.start(40);
} else {
eventTimer.stop();
notifyProcess(lastEventID, lastEventFilename);
lastEventID = w;
eventTimer.start(40);
}
} else {
lastEventID = w;
eventTimer.start(40);
}
at += sizeof(inotify_event) + event->len;
}
notifier->setEnabled(1);
//if (!lastEventFilename.isEmpty()) { emit reloadDir(); }
}
//---------------------------------------------------------------------------------------
void myModel::eventTimeout()
{
notifyProcess(lastEventID, lastEventFilename);
eventTimer.stop();
}
//---------------------------------------------------------------------------------------
void myModel::notifyProcess(int eventID, QString fileName)
{
qDebug() << "notifyProcess" << eventID << fileName;
QString folderChanged;
if (watchers.contains(eventID)) {
myModelItem *parent = rootItem->matchPath(watchers.value(eventID).split(SEPARATOR));
if (parent) {
parent->dirty = 1;
QDir dir(parent->absoluteFilePath());
folderChanged = dir.absolutePath();
QFileInfoList all = dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System);
foreach(myModelItem * child, parent->children()) {
if (all.contains(child->fileInfo())) {
//just remove known items
all.removeOne(child->fileInfo());
} else {
//must have been deleted, remove from model
if (child->fileInfo().isDir()) {
int wd = watchers.key(child->absoluteFilePath());
inotify_rm_watch(inotifyFD,wd);
watchers.remove(wd);
}
beginRemoveRows(index(parent->absoluteFilePath()),child->childNumber(),child->childNumber());
parent->removeChild(child);
endRemoveRows();
}
}
foreach(QFileInfo one, all) { //only new items left in list
beginInsertRows(index(parent->absoluteFilePath()),parent->childCount(),parent->childCount());
new myModelItem(one,parent);
endInsertRows();
}
}
} else {
inotify_rm_watch(inotifyFD,eventID);
watchers.remove(eventID);
}
if (!fileName.isEmpty() && showThumbs) {
lastEventFilename = fileName;
}
if (!folderChanged.isEmpty()) {
qDebug() << "folder modified" << folderChanged;
emit reloadDir(folderChanged);
}
}
//---------------------------------------------------------------------------------
void myModel::addWatcher(myModelItem *item)
{
qDebug() << "addWatcher" << item->absoluteFilePath();
while(item != rootItem) {
watchers.insert(inotify_add_watch(inotifyFD, item->absoluteFilePath().toLocal8Bit(), IN_CREATE | IN_MODIFY | IN_MOVE | IN_DELETE),item->absoluteFilePath()); //IN_ONESHOT | IN_ALL_EVENTS)
item->watched = 1;
item = item->parent();
}
}
//---------------------------------------------------------------------------------
bool myModel::setRootPath(const QString& path)
{
currentRootPath = path;
myModelItem *item = rootItem->matchPath(path.split(SEPARATOR));
if (item == Q_NULLPTR) {
QMessageBox::warning(Q_NULLPTR, tr("No such directory"), tr("Directory requested does not exists."));
return false;
}
if (!item->watched) { addWatcher(item); }
if (!item->walked || !item->watched) {
populateItem(item);
return false;
} else {
if(item->dirty) { //model is up to date, but view needs to be invalidated
item->dirty = false;
return true;
}
}
return false;
}
QString myModel::getRootPath()
{
return currentRootPath;
}
//---------------------------------------------------------------------------------------
bool myModel::canFetchMore (const QModelIndex & parent) const
{
myModelItem *item = static_cast<myModelItem*>(parent.internalPointer());
if(item) {
if(item->walked) { return false; }
}
return true;
}
bool myModel::hasChildren(const QModelIndex &parent) const
{
if (!parent.isValid()) { return true; }
myModelItem *item = static_cast<myModelItem*>(parent.internalPointer());
if (item && item->fileInfo().isDir()) {
if (QDir(item->fileInfo()
.absoluteFilePath())
.entryInfoList(QDir::NoDotAndDotDot|QDir::AllEntries|QDir::System)
.count() > 0)
{
return true;
}
}
return false;
}
//---------------------------------------------------------------------------------------
void myModel::fetchMore (const QModelIndex & parent)
{
myModelItem *item = static_cast<myModelItem*>(parent.internalPointer());
if (item) {
populateItem(item);
emit dataChanged(parent,parent);
}
}
//---------------------------------------------------------------------------------------
void myModel::populateItem(myModelItem *item)
{
if (item == Q_NULLPTR) { return; }
item->walked = 1;
QDir dir(item->absoluteFilePath());
QFileInfoList all = dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System);
foreach(QFileInfo one, all) { new myModelItem(one,item); }
}
//---------------------------------------------------------------------------------
int myModel::columnCount(const QModelIndex &parent) const
{
return (parent.column() > 0) ? 0 : 5;
}
//---------------------------------------------------------------------------------------
int myModel::rowCount(const QModelIndex &parent) const
{
myModelItem *item = static_cast<myModelItem*>(parent.internalPointer());
if(item) { return item->childCount(); }
return rootItem->childCount();
}
//---------------------------------------------------------------------------------
void myModel::refresh()
{
myModelItem *item = rootItem->matchPath(QStringList("/"));
//free all inotify watches
foreach(int w, watchers.keys()) { inotify_rm_watch(inotifyFD,w); }
watchers.clear();
beginResetModel();
if (item) { item->clearAll(); }
endResetModel();
}
//---------------------------------------------------------------------------------
void myModel::update()
{
myModelItem *item = rootItem->matchPath(currentRootPath.split(SEPARATOR));
if (item == Q_NULLPTR) { return; }
foreach(myModelItem *child, item->children()) { child->refreshFileInfo(); }
}
//---------------------------------------------------------------------------------
void myModel::refreshItems()
{
myModelItem *item = rootItem->matchPath(currentRootPath.split(SEPARATOR));
if (item == Q_NULLPTR) { return; }
qDebug() << "refresh items";
item->clearAll();
populateItem(item);
}
//---------------------------------------------------------------------------------
QModelIndex myModel::insertFolder(QModelIndex parent)
{
myModelItem *item = static_cast<myModelItem*>(parent.internalPointer());
int num = 0;
QString name;
do {
num++;
name = QString("new_folder%1").arg(num);
}
while(item->hasChild(name));
QDir temp(currentRootPath);
if(!temp.mkdir(name)) { return QModelIndex(); }
beginInsertRows(parent,item->childCount(),item->childCount());
new myModelItem(QFileInfo(currentRootPath + "/" + name),item);
endInsertRows();
return index(item->childCount() - 1,0,parent);
}
//---------------------------------------------------------------------------------
QModelIndex myModel::insertFile(QModelIndex parent)
{
myModelItem *item = static_cast<myModelItem*>(parent.internalPointer());
int num = 0;
QString name;
do {
num++;
name = QString("new_file%1").arg(num);
}
while (item->hasChild(name));
QFile temp(currentRootPath + "/" + name);
if(!temp.open(QIODevice::WriteOnly)) { return QModelIndex(); }
temp.close();
beginInsertRows(parent,item->childCount(),item->childCount());
new myModelItem(QFileInfo(temp),item);
endInsertRows();
return index(item->childCount()-1,0,parent);
}
//---------------------------------------------------------------------------------
Qt::DropActions myModel::supportedDropActions() const
{
return Qt::CopyAction | Qt::MoveAction;
}
//---------------------------------------------------------------------------------
QStringList myModel::mimeTypes() const
{
return QStringList("text/uri-list");
}
//---------------------------------------------------------------------------------
QMimeData * myModel::mimeData(const QModelIndexList & indexes) const
{
QMimeData *data = new QMimeData();
QList<QUrl> files;
foreach(QModelIndex index, indexes) {
myModelItem *item = static_cast<myModelItem*>(index.internalPointer());
QUrl url = QUrl::fromLocalFile(item->absoluteFilePath());
if (!files.contains(url)) { files.append(url); }
}
data->setUrls(files);
return data;
}
//---------------------------------------------------------------------------------
void myModel::cacheInfo()
{
QFile fileIcons(QString("%1/file.cache").arg(Common::configDir()));
if (fileIcons.open(QIODevice::WriteOnly)) {
QDataStream out(&fileIcons);
out << *mimeIcons;
fileIcons.close();
}
fileIcons.setFileName(QString("%1/folder.cache").arg(Common::configDir()));
if (fileIcons.open(QIODevice::WriteOnly)) {
QDataStream out(&fileIcons);
out.setDevice(&fileIcons);
out << *folderIcons;
fileIcons.close();
}
if(thumbs->count() > thumbCount) {
fileIcons.setFileName(QString("%1/thumbs.cache").arg(Common::configDir()));
if(fileIcons.size() > 10000000) { fileIcons.remove(); }
else {
if (fileIcons.open(QIODevice::WriteOnly)) {
QDataStream out(&fileIcons);
out.setDevice(&fileIcons);
out << *thumbs;
fileIcons.close();
}
}
}
}
//---------------------------------------------------------------------------
/**
* @brief Sets indicator whether show thumbnails of pictures
* @param icons
*/
void myModel::setMode(bool icons) {
showThumbs = icons;
}
//---------------------------------------------------------------------------
/**
* @brief Loads mime types
*/
void myModel::loadMimeTypes() const {
QMapIterator<QString, QString> globs(Common::getMimesGlobs(qApp->applicationFilePath()));
while(globs.hasNext()) {
globs.next();
mimeGlob->insert(globs.value(), globs.key());
}
QMapIterator<QString, QString> generic(Common::getMimesGeneric(qApp->applicationFilePath()));
while(generic.hasNext()) {
generic.next();
mimeGeneric->insert(generic.key(), generic.value());
}
}
//---------------------------------------------------------------------------
/**
* @brief Loads thumbnails
* @param indexes
*/
void myModel::loadThumbs(QModelIndexList indexes) {
// Types that should be thumbnailed
QStringList files;
// Remember files with valid mime
foreach (QModelIndex item, indexes) {
QString filename = filePath(item);
QString mimetype = mimeUtilsPtr->getMimeType(filename);
//qDebug() << "mime for file" << filename << mimetype;
if (mimetype.startsWith(QString("image"))
#ifdef WITH_MAGICK
|| mimetype == QString("application/pdf")
#ifdef WITH_FFMPEG
|| mimetype.startsWith(QString("video"))
|| mimetype == QString("audio/mpeg")
#endif
#endif
|| filename.endsWith(".desktop")
)
{ files.append(filename); }
}
// Loads thumbnails from cache
if (files.count()) {
QFileInfo pathInfo (files.at(0));
if (thumbs->count() == 0) {
qDebug() << "thumbs are empty, try to load cache ...";
QFile fileIcons(QString("%1/thumbs.cache").arg(Common::configDir()));
if (fileIcons.open(QIODevice::ReadOnly)) {
qDebug() << "load thumbs from cache ...";
QDataStream out(&fileIcons);
out >> *thumbs;
fileIcons.close();
}
thumbCount = thumbs->count();
qDebug() << "thumbcount" << thumbCount;
}
foreach (QString item, files) {
if (!thumbs->contains(item) ||
(item.split("/").takeLast() == lastEventFilename && !lastEventFilename.isEmpty()))
{
qDebug() << "gen new thumb" << item;
QByteArray thumb = getThumb(item);
if (thumb.size()>0) {
thumbs->insert(item, thumb);
if (item.split("/").takeLast() == lastEventFilename) {
qDebug() << "save new thumb cache";
lastEventFilename.clear();
QFile fileIcons(QString("%1/thumbs.cache").arg(Common::configDir()));
if(fileIcons.size() > 10000000) { fileIcons.remove(); }
else {
if (fileIcons.open(QIODevice::WriteOnly)) {
QDataStream out(&fileIcons);
out.setDevice(&fileIcons);
out << *thumbs;
fileIcons.close();
}
}
}
}
}
}
emit thumbUpdate(pathInfo.absolutePath());
}
}
//---------------------------------------------------------------------------
/**
* @brief Creates thumbnail for given item
* @param item
* @return thumbnail
*/
QByteArray myModel::getThumb(QString item) {
if (item.isEmpty()) { return QByteArray(); }
if (item.endsWith(".desktop")) {
QString iconFile = Common::findIcon("", QIcon::themeName(), Common::getDesktopIcon(item));
if (!iconFile.isEmpty()) {
QPixmap pix = QPixmap::fromImage(QImage(iconFile));
if (!pix.isNull()) {
QByteArray raw;
QBuffer buffer(&raw);
buffer.open(QIODevice::WriteOnly);
pix.save(&buffer, "PNG");
return raw;
}
}
return QByteArray();
}
#ifdef WITH_MAGICK
#ifdef WITH_FFMPEG
QString itemMime = mimeUtilsPtr->getMimeType(item);
if (itemMime.startsWith(QString("video"))) {
QByteArray coverart = getVideoFrame(item, true);
if (coverart.size()>0) { return coverart; }
return getVideoFrame(item, false);
} else if (itemMime == QString("audio/mpeg")) {
return getVideoFrame(item, true);
}
#endif
QByteArray result;
qDebug() << "generate thumbnail for" << item;
try {
Magick::Image background(Magick::Geometry(128, 128), Magick::ColorRGB(0, 0, 0));
#ifndef OLDMAGICK
background.quiet(true);
#endif
#if MagickLibVersion >= 0x700
background.alpha(true);
#else
background.matte(true);
#endif
background.backgroundColor(background.pixelColor(0,0));
background.transparent(background.pixelColor(0,0));
Magick::Image thumb;
#ifndef OLDMAGICK
thumb.quiet(true);
#endif
QString filename = item;
thumb.read(filename.toUtf8().data());
thumb.scale(Magick::Geometry(128, 128));
if (thumb.depth()>8) { thumb.depth(8); }
int offsetX = 0;
int offsetY = 0;
if (thumb.columns()<background.columns()) {
offsetX = (background.columns()-thumb.columns())/2;
}
if (thumb.rows()<background.rows()) {
offsetY = (background.rows()-thumb.rows())/2;
}
background.composite(thumb, offsetX, offsetY, Magick::OverCompositeOp);
background.magick("BMP");
Magick::Blob buffer;
background.write(&buffer);
result = QByteArray((char*)buffer.data(), buffer.length());
}
catch(Magick::Error &error_ ) {
qWarning() << error_.what();
}
catch(Magick::Warning &warn_ ) {
qWarning() << warn_.what();
}
return result;
#else
// Thumbnail image
QImage theThumb, background;
QImageReader pic(item);
int w = pic.size().width();
int h = pic.size().height();
// Background
background = QImage(128, 128, QImage::Format_RGB32);
background.fill(QApplication::palette().color(QPalette::Base).rgb());
// Scale image and create its shadow template (background.png)
if (w > 128 || h > 128) {
pic.setScaledSize(QSize(123, 93));
QImage temp = pic.read();
theThumb.load(":/images/background.png");
QPainter painter(&theThumb);
painter.drawImage(QPoint(0, 0), temp);
} else {
pic.setScaledSize(QSize(64, 64));
theThumb = pic.read();
}
// Draw thumbnail picture
QPainter painter(&background);
painter.drawImage(QPoint((123 - theThumb.width()) / 2,
(115 - theThumb.height()) / 2), theThumb);
// Write it to buffer
QBuffer buffer;
QImageWriter writer(&buffer, "jpg");
writer.setQuality(50);
writer.write(background);
return buffer.buffer();
#endif
}
#ifdef WITH_FFMPEG
QByteArray myModel::getVideoFrame(QString file, bool getEmbedded, int videoFrame, int pixSize)
{
qDebug() << "getVideoFrame" << file << getEmbedded << videoFrame << pixSize;
QByteArray result;
if (file.isEmpty()) { return result; }
AVCodecContext *pCodecCtx;
AVFormatContext *pFormatCtx = avformat_alloc_context();
AVCodec * pCodec;
AVFrame *pFrame, *pFrameRGB;
qDebug() << "open media file";
if (avformat_open_input(&pFormatCtx,file.toUtf8().data(),
Q_NULLPTR,
Q_NULLPTR) != 0) { return result; }
if (avformat_find_stream_info(pFormatCtx,
Q_NULLPTR) < 0) { return result; }
av_dump_format(pFormatCtx, 0, file.toUtf8().data(), 0);
int videoStream = -1;
int possibleVideoCover = -1;
qDebug() << "get video stream";
for (int i=0; i < (int)pFormatCtx->nb_streams; i++) {
if(pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
if (pFormatCtx->streams[i]->codecpar->codec_id == AV_CODEC_ID_MJPEG ||
pFormatCtx->streams[i]->codecpar->codec_id == AV_CODEC_ID_PNG ||
pFormatCtx->streams[i]->codecpar->codec_id == AV_CODEC_ID_GIF ||
pFormatCtx->streams[i]->codecpar->codec_id == AV_CODEC_ID_TIFF ||
pFormatCtx->streams[i]->codecpar->codec_id == AV_CODEC_ID_BMP) {
possibleVideoCover = i;
}
if (videoStream<0) { videoStream = i; }
//break;
}
}
if (possibleVideoCover>-1 && getEmbedded) {
qDebug() << "FOUND COVER?";
videoStream = possibleVideoCover;
}
if (videoStream == -1) { return result; }
qDebug() << "find decoder";
pCodec =avcodec_find_decoder(pFormatCtx->streams[videoStream]->codecpar->codec_id);
pCodecCtx = avcodec_alloc_context3(Q_NULLPTR);
if (pCodec == Q_NULLPTR || pCodecCtx == Q_NULLPTR) { return result; }
if (avcodec_parameters_to_context(pCodecCtx,
pFormatCtx->streams[videoStream]->codecpar)<0)
{ return result; }
if (avcodec_open2(pCodecCtx,
pCodec,
Q_NULLPTR) < 0) { return result; }
qDebug() << "check for embedded?" << getEmbedded;
if (getEmbedded) {
if (pFormatCtx->streams[videoStream]->disposition == AV_DISPOSITION_ATTACHED_PIC) {
AVPacket pkt = pFormatCtx->streams[videoStream]->attached_pic;
if (pkt.size>0) {
QByteArray attachedPix = QByteArray(reinterpret_cast<const char*>(pkt.data),
pkt.size);
if (attachedPix.length()>0) {
qDebug() << "got embedded picture";
avcodec_close(pCodecCtx);
avformat_close_input(&pFormatCtx);
//return attachedPix;
qDebug() << "prepare thumbnail for" << file;
try {
Magick::Image thumb(Magick::Blob(attachedPix, attachedPix.length()));
Magick::Image background(Magick::Geometry((size_t)pixSize,
(size_t)pixSize),
Magick::Color("black"));
#if MagickLibVersion >= 0x700
background.alpha(true);
#else
background.matte(true);
#endif
background.backgroundColor(background.pixelColor(0,0));
background.transparent(background.pixelColor(0,0));
thumb.scale(Magick::Geometry((size_t)pixSize,
(size_t)pixSize));
int offsetX = 0;
int offsetY = 0;
if (thumb.columns()<background.columns()) {
offsetX = (int)(background.columns()-thumb.columns())/2;
}
if (thumb.rows()<background.rows()) {
offsetY = (int)(background.rows()-thumb.rows())/2;
}
background.composite(thumb,
offsetX,
offsetY,
MagickCore::OverCompositeOp);
background.magick("BMP");
Magick::Blob buffer;
background.write(&buffer);
result = QByteArray((char*)buffer.data(),
(int)buffer.length());
qDebug() << "thumbnail is done" << file;
}
catch(Magick::Error &error_ ) {
qWarning() << error_.what();
}
catch(Magick::Warning &warn_ ) {
qWarning() << warn_.what();
}
}
}
}
avcodec_close(pCodecCtx);
avformat_close_input(&pFormatCtx);
return result;
}
qDebug() << "setup frame";
pFrame = av_frame_alloc();
pFrameRGB = av_frame_alloc();
uint8_t *buffer;
int numBytes;
AVPixelFormat pFormat = AV_PIX_FMT_BGR24;
numBytes = av_image_get_buffer_size(pFormat,
pCodecCtx->width,
pCodecCtx->height,
16);
buffer = (uint8_t *) av_malloc(numBytes*sizeof(uint8_t));
av_image_fill_arrays(pFrameRGB->data,
pFrameRGB->linesize,
buffer,
pFormat,
pCodecCtx->width,
pCodecCtx->height,
1);
qDebug() << "calculate frame to get";
int res;
int frameFinished;
AVPacket packet;
int currentFrame = 0;
bool fetchFrame = false;
double fps = av_q2d(pFormatCtx->streams[videoStream]->r_frame_rate);
double dur = static_cast<double>(pFormatCtx->duration)/AV_TIME_BASE;
int maxFrame = qRound((dur*fps)/2);
if (videoFrame>=0) { maxFrame = videoFrame; }
qDebug() << "we need to get frame" << maxFrame;
int64_t seekT = (int64_t(maxFrame) *
pFormatCtx->streams[videoStream]->r_frame_rate.den *
pFormatCtx->streams[videoStream]->time_base.den) /
(int64_t(pFormatCtx->streams[videoStream]->r_frame_rate.num) *
pFormatCtx->streams[videoStream]->time_base.num);
if (av_seek_frame(pFormatCtx, videoStream, seekT, AVSEEK_FLAG_FRAME) >= 0) {
av_init_packet(&packet);
currentFrame = maxFrame;
}