From 1bcbb69e31090cf71e913419299b52dd4d094bef Mon Sep 17 00:00:00 2001
From: Arno <am@disconnect.de>
Date: Fri, 29 Mar 2013 12:55:36 +0100
Subject: Make FrameCache threaded

create snapshot pics in a separate thread. Also use the first frame
available if the clip isn't long enough for the configured frame.
---
 smglobals.cpp | 126 ++--------------------------------------------------------
 1 file changed, 3 insertions(+), 123 deletions(-)

(limited to 'smglobals.cpp')

diff --git a/smglobals.cpp b/smglobals.cpp
index 6ef4ceb..9240bf2 100644
--- a/smglobals.cpp
+++ b/smglobals.cpp
@@ -29,6 +29,7 @@
 #include "pictureviewer2.h"
 #include "picfilesmodel.h"
 #include "configurationdialog.h"
+#include "framecache.h"
 
 SmGlobals *SmGlobals::mInstance = 0;
 
@@ -115,9 +116,9 @@ PictureViewer2 *SmGlobals::pictureViewer() {
 	return mPictureViewer;
 }
 
-SmGlobals::FrameCache *SmGlobals::frameCache() {
+FrameCache *SmGlobals::frameCache() {
 	if(!mFrameCache){
-		mFrameCache = new SmGlobals::FrameCache;
+        mFrameCache = new FrameCache;
 	}
 	return mFrameCache;
 }
@@ -170,124 +171,3 @@ SmGlobals::SmGlobals() : mPictureViewer(0), mFrameCache(0){
     mIcons.insert("Clean tampon", ":/clean_tampon.png");
 	mDvdSize = Q_INT64_C(4707319808) - 20 * 1024 *1024;
 }
-
-//FrameCache
-SmGlobals::FrameCache::FrameCache(QObject *parent) : QObject(parent), mMagic(0xDEADBEEF), mCacheSubDir(".frameCache"), mCacheFileName("cache") {
-	readConfig();
-	readCache();
-}
-
-SmGlobals::FrameCache::~FrameCache(){
-	QFile outfile(mCacheFile);
-	outfile.open(QIODevice::WriteOnly | QIODevice::Truncate);
-	QDataStream ds(&outfile);
-	ds << (qint32)mMagic;
-	for(QHash<QPair<QString, QString>, QString>::const_iterator it = mFrameCache.constBegin(); it != mFrameCache.constEnd(); ++it){
-		ds << it.key().first << it.key().second << it.value();
-	}
-	outfile.close();
-}
-
-void SmGlobals::FrameCache::readConfig(){
-	QSettings s;
-	QString archive = s.value("paths/archivedir").toString();
-	if(archive.isEmpty()){
-		return;
-	}
-	QDir archiveDir(archive);
-	if(!archiveDir.exists(mCacheSubDir)){
-		archiveDir.mkdir(mCacheSubDir);
-	}
-	mCacheDir = QString("%1/%2").arg(archive).arg(mCacheSubDir);
-	mCacheFile = QString("%1/%2").arg(mCacheDir).arg(mCacheFileName);
-	mWhen = s.value("ui/grabframe", "00:00:00").toString();
-	mFfMpegPath = s.value("paths/ffmpeg").toString();
-}
-
-const QPixmap SmGlobals::FrameCache::entry(const QString &sourcePath, const QString &when){
-	const QPair<QString, QString> source = prepFrame(sourcePath, when);
-	return QPixmap(mFrameCache.value(source));
-}
-
-const QString SmGlobals::FrameCache::entryPath(const QString &sourcePath, const QString &when){
-	const QPair<QString, QString> source = prepFrame(sourcePath, when);
-	return mFrameCache.value(source);
-}
-
-const QPair<QString, QString> SmGlobals::FrameCache::prepFrame(const QString &sourceFile, QString when){
-	if(when.isEmpty()){
-		when = mWhen;
-	}
-	const QString fileName = QFileInfo(sourceFile).fileName();
-	const QPair<QString, QString> source(fileName, when);
-	if(!mFrameCache.contains(source)){
-		grabFrame(sourceFile, when);
-	}
-	return source;
-}
-
-void SmGlobals::FrameCache::grabFrame(const QString &sourceFile, QString when){
-	QFileInfo sourceInfo(sourceFile);
-	if(!sourceInfo.exists()){
-		return;
-	}
-	QString tmpTemplate = QString("%1/%2_%3-XXXXXX.png").arg(mCacheDir).arg(sourceInfo.fileName()).arg(when);
-	QTemporaryFile tempFile(tmpTemplate);
-	tempFile.setAutoRemove(false);
-	if(tempFile.open()){
-		QStringList ffMpegArgs = QStringList() << "-vframes" << "1" << "-ss" << when << "-i" << sourceFile << "-y" << tempFile.fileName();
-		QProcess ffmpeg;
-		ffmpeg.start(mFfMpegPath, ffMpegArgs);
-		if(!ffmpeg.waitForStarted()){
-			return;
-		}
-		ffmpeg.waitForFinished();
-		QPair<QString, QString> pair(sourceInfo.fileName(), when);
-		mFrameCache.insert(pair, tempFile.fileName());
-	}
-}
-
-void SmGlobals::FrameCache::readCache(){
-	QFile cache(mCacheFile);
-	cache.open(QIODevice::ReadOnly);
-	QDataStream ds(&cache);
-	qint32 magic;
-	ds >> magic;
-	if(magic != mMagic){
-		return;
-	}
-	while(!ds.atEnd()){
-		QString source, pos, cacheFile;
-		ds >> source >> pos >> cacheFile;
-        QFileInfo fi(cacheFile);
-        if(fi.size() == 0){
-            QFile::remove(fi.absoluteFilePath());
-            continue;
-        }
-		QPair<QString, QString> pair(source, pos);
-		mFrameCache.insert(pair, cacheFile);
-	}
-	cleanup();
-}
-
-/* cleanup function for fucked up framecache:
-   Key was full path until recently, not just the filename, so
-   duplicates showed up when hovering over the same in different
-   paths, eg, archive or filesystem. Should be removed in the future
-*/
-void SmGlobals::FrameCache::cleanup(){
-	QHash<QPair<QString, QString>, QString> newFrameCache;
-	QHash<QPair<QString, QString>, QString>::const_iterator it = mFrameCache.constBegin();
-	while(it != mFrameCache.constEnd()){
-		QPair<QString, QString> key = it.key();
-		QFileInfo fi(key.first);
-		QPair<QString, QString> newEntry(fi.fileName(), key.second);
-		if(!newFrameCache.contains(newEntry)){
-			newFrameCache.insert(newEntry, it.value());
-		}else{
-			QFile::remove(it.value());
-		}
-		++it;
-	}
-	mFrameCache = newFrameCache;
-}
-- 
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