Automatically update clips when they change on disk. It means you can now edit an...

[kdenlive] / src / docclipbase.cpp

diff --git a/src/docclipbase.cpp b/src/docclipbase.cpp
index f0720bb3c8ec63040532e57c748f831691cb00b6..10d5df4a609e39f229be3db00cd158f436c863b3 100644 (file)
--- a/src/docclipbase.cpp
+++ b/src/docclipbase.cpp
@@ -416,9 +416,13 @@ void DocClipBase::deleteProducers()
     m_videoOnlyProducer = NULL;
 }
 
-void DocClipBase::setProducer(Mlt::Producer *producer)
+void DocClipBase::setProducer(Mlt::Producer *producer, bool reset)
 {
     if (producer == NULL) return;
+    if (reset) {
+        // Clear all previous producers
+        deleteProducers();
+    }
     QString id = producer->get("id");
     if (id.contains('_')) {
         // this is a subtrack producer, insert it at correct place
@@ -450,7 +454,7 @@ void DocClipBase::setProducer(Mlt::Producer *producer)
     }
     //m_clipProducer = producer;
     //m_clipProducer->set("transparency", m_properties.value("transparency").toInt());
-    if (m_thumbProd && !m_thumbProd->hasProducer()) m_thumbProd->setProducer(producer);
+    if (m_thumbProd && (reset || !m_thumbProd->hasProducer())) m_thumbProd->setProducer(producer);
 }
 
 Mlt::Producer *DocClipBase::audioProducer(int track)
@@ -696,7 +700,6 @@ void DocClipBase::getFileHash(const QString url)
         file.close();
         fileHash = QCryptographicHash::hash(fileData, QCryptographicHash::Md5);
         m_properties.insert("file_hash", QString(fileHash.toHex()));
-        //kDebug() << file.fileName() << file.size() << fileHash.toHex();
     }
 }
 
@@ -709,6 +712,29 @@ QString DocClipBase::getClipHash() const
     return hash;
 }
 
+// static
+QString DocClipBase::getHash(const QString &path)
+{
+    QFile file(path);
+    if (file.open(QIODevice::ReadOnly)) { // write size and hash only if resource points to a file
+        QByteArray fileData;
+        QByteArray fileHash;
+        /*
+               * 1 MB = 1 second per 450 files (or faster)
+               * 10 MB = 9 seconds per 450 files (or faster)
+               */
+        if (file.size() > 1000000*2) {
+            fileData = file.read(1000000);
+            if (file.seek(file.size() - 1000000))
+                fileData.append(file.readAll());
+        } else
+            fileData = file.readAll();
+        file.close();
+        return QCryptographicHash::hash(fileData, QCryptographicHash::Md5).toHex();
+    }
+    return QString();
+}
+
 void DocClipBase::refreshThumbUrl()
 {
     if (m_thumbProd) m_thumbProd->updateThumbUrl(m_properties.value("file_hash"));