Volume envelope calculation

[kdenlive] / testingArea / audioInfo.cpp

diff --git a/testingArea/audioInfo.cpp b/testingArea/audioInfo.cpp
new file mode 100644 (file)
index 0000000..f35a8a9
--- /dev/null
+++ b/testingArea/audioInfo.cpp
@@ -0,0 +1,59 @@
+/***************************************************************************
+ *   Copyright (C) 2012 by Simon Andreas Eugster (simon.eu@gmail.com)      *
+ *   This file is part of kdenlive. See www.kdenlive.org.                  *
+ *                                                                         *
+ *   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 "audioInfo.h"
+
+#include "audioStreamInfo.h"
+#include <iostream>
+#include <cstdlib>
+
+AudioInfo::AudioInfo(Mlt::Producer *producer)
+{
+    // Since we already receive an MLT producer, we do not need to initialize MLT:
+    // Mlt::Factory::init(NULL);
+
+    // Get the number of streams and add the information of each of them if it is an audio stream.
+    int streams = atoi(producer->get("meta.media.nb_streams"));
+    for (int i = 0; i < streams; i++) {
+        std::string propertyName = QString("meta.media.%1.stream.type").arg(i).toStdString();
+
+        if (strcmp("audio", producer->get(propertyName.c_str())) == 0) {
+            m_list << new AudioStreamInfo(producer, i);
+        }
+
+    }
+}
+
+AudioInfo::~AudioInfo()
+{
+    foreach (AudioStreamInfo *info, m_list) {
+        delete info;
+    }
+}
+
+int AudioInfo::size() const
+{
+    return m_list.size();
+}
+
+AudioStreamInfo const* AudioInfo::info(int pos) const
+{
+    Q_ASSERT(pos >= 0);
+    Q_ASSERT(pos <= m_list.size());
+
+    return m_list.at(pos);
+}
+
+void AudioInfo::dumpInfo() const
+{
+    foreach (AudioStreamInfo *info, m_list) {
+        info->dumpInfo();
+    }
+}