From 19a7e82de5decb45caf07acc0d1161b1f05cb15b Mon Sep 17 00:00:00 2001
From: Arno <am@disconnect.de>
Date: Sat, 14 Sep 2013 07:28:19 +0200
Subject: Get rid of FrameCache

---
 framecache.cpp | 158 ---------------------------------------------------------
 1 file changed, 158 deletions(-)
 delete mode 100644 framecache.cpp

(limited to 'framecache.cpp')

diff --git a/framecache.cpp b/framecache.cpp
deleted file mode 100644
index e6fceaa..0000000
--- a/framecache.cpp
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
-  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 <QFile>
-#include <QDataStream>
-#include <QSettings>
-#include <QDir>
-#include <QSemaphore>
-#include <QMutex>
-#include <QProcess>
-#include <QTemporaryFile>
-#include <QPixmap>
-
-#include "framecache.h"
-
-FrameCache::FrameCache(QObject *parent) : QObject(parent){
-    mSemFree = new QSemaphore(128); // 128 queued requests for a frame, should be enough
-    mSemUsed = new QSemaphore;
-    mFrameCache = new QHash<QPair<QString, QString>, QString>();
-    mDataQueue = new QQueue<QPair<QString, QString> >();
-    mCacheMx = new QMutex;
-    mGenerator = new FrameCacheGenerator(this);
-    mGenerator->init(mSemFree, mSemUsed, mCacheMx, mDataQueue, mFrameCache);
-    mGenerator->readConfig();
-    rebuild();
-    mGenerator->start();
-    QSettings s;
-    mWhen = s.value("ui/grabframe", "00:00:00").toString();
-}
-
-FrameCache::~FrameCache(){
-    mGenerator->exit();
-}
-
-const QPixmap FrameCache::entry(const QString &sourcePath, const QString &when){
-    QFileInfo fi(sourcePath);
-    QString w = when.isEmpty() ? mWhen : when;
-    QPair<QString, QString> key = qMakePair<QString, QString>(fi.fileName(), w);
-    mCacheMx->lock();
-    QPixmap retval;
-    if(!mFrameCache->contains(key)){
-        QString nullPath = mFrameCache->value(qMakePair<QString, QString>(key.first, "00:00:00"));
-        if(!nullPath.isEmpty()){
-            mCacheMx->unlock();
-            return QPixmap(nullPath);
-        }
-        mCacheMx->unlock();
-        mSemFree->acquire();
-        mDataQueue->enqueue(qMakePair<QString, QString>(sourcePath, when));
-        mSemUsed->release();
-        return QPixmap();
-    }
-    retval = QPixmap(mFrameCache->value(key));
-    mCacheMx->unlock();
-    return retval;
-
-}
-
-const QString FrameCache::entryPath(const QString &sourcePath, const QString &when){
-    QFileInfo fi(sourcePath);
-    if(!fi.exists()){
-        return QString();
-    }
-    QPair<QString, QString> data = qMakePair<QString, QString>(fi.fileName(), when);
-    QMutexLocker l(mCacheMx);
-    return mFrameCache->value(data);
-}
-
-void FrameCache::rebuild(){
-    QMutexLocker l(mCacheMx);
-    QDir cdir(mGenerator->cacheDir());
-    QFileInfoList files = cdir.entryInfoList(QDir::Files);
-    mFrameCache->clear();
-    foreach(QFileInfo fi, files){
-        QString base = fi.fileName();
-        base.chop(fi.suffix().size() + 1); // basename doesn't work, b/c we have filenames w spaces
-        base.chop(7); //remove temp. extension
-        QString when = base.right(8);
-        base.chop(9); //remove when + _, leaving the orig. filename
-        QPair<QString, QString> key = qMakePair<QString, QString>(base, when);
-        if(mFrameCache->contains(key)){
-            QFile::remove(fi.absoluteFilePath());
-        }else{
-            mFrameCache->insert(key, fi.absoluteFilePath());
-        }
-    }
-}
-
-FrameCacheGenerator::FrameCacheGenerator(QObject *parent) : QThread(parent), mCacheSubDir(".frameCache"), mCacheFileName("cache") {}
-
-void FrameCacheGenerator::init(QSemaphore *set, QSemaphore *get, QMutex *cachemx, QQueue<QPair<QString, QString> > *data, QHash<QPair<QString, QString>, QString> *cache){
-    mSemFree = set;
-    mSemUsed = get;
-    mDataQueue = data;
-    mCacheMx = cachemx;
-    mFrameCache = cache;
-}
-
-void FrameCacheGenerator::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);
-
-    mFfMpegPath = s.value("paths/ffmpeg").toString();
-}
-
-void FrameCacheGenerator::run(){
-    forever{
-        mSemUsed->acquire();
-        QPair<QString, QString> cur = mDataQueue->dequeue();
-        if(!grabFrame(cur.first, cur.second)){
-            grabFrame(cur.first, "00:00:00");
-        }
-        mSemFree->release();
-    }
-}
-
-bool FrameCacheGenerator::grabFrame(const QString &sourceFile, QString when){
-    QFileInfo sourceInfo(sourceFile);
-    if(!sourceInfo.exists()){
-        return false;
-    }
-    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 false;
-        }
-        ffmpeg.waitForFinished();
-        QFileInfo tfi(tempFile.fileName());
-        if(tfi.size() == 0){
-            tempFile.remove();
-            return false;
-        }
-        QPair<QString, QString> pair(sourceInfo.fileName(), when);
-        mCacheMx->lock();
-        mFrameCache->insert(pair, tempFile.fileName());
-        mCacheMx->unlock();
-        return true;
-    }
-    return false;
-}
-- 
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