From 26cd949d9a2a34ff05ebbe8e7a7cc7cbc099bd8f Mon Sep 17 00:00:00 2001
From: Joao Carreira <jfmcarreira@gmail.com>
Date: Thu, 15 Dec 2016 16:51:13 +0000
Subject: [PATCH] Add guessing for endianness

---
 app/VideoSubWindow.cpp | 44 ++++++++++++++++++++++++++++--------------
 app/VideoSubWindow.h   |  7 ++++++-
 lib/PlaYUVerDefs.h     |  7 +++++++
 3 files changed, 43 insertions(+), 15 deletions(-)

diff --git a/app/VideoSubWindow.cpp b/app/VideoSubWindow.cpp
index bdf6eee..718d43e 100644
--- a/app/VideoSubWindow.cpp
+++ b/app/VideoSubWindow.cpp
@@ -428,7 +428,7 @@ Void VideoSubWindow::updateVideoWindowInfo()
   }
 }
 
-Bool VideoSubWindow::guessFormat( QString filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBitsPerPixel )
+Bool VideoSubWindow::guessFormat( QString filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBitsPerPixel, Int& rEndianness )
 {
   std::vector<PlaYUVerStdResolution> stdResList = PlaYUVerStream::stdResolutionSizes();
   Bool bGuessed = true;
@@ -488,19 +488,6 @@ Bool VideoSubWindow::guessFormat( QString filename, UInt& rWidth, UInt& rHeight,
           }
         }
       }
-      // Guess bits per pixel - match %dbpp
-      QRegularExpressionMatch BppMatch = QRegularExpression( "_\\d*bpp" ).match( FilenameShort );
-      if( BppMatch.hasMatch() )
-      {
-        QString matchString = BppMatch.captured( 0 );
-        matchString.remove( "_" );
-        matchString.remove( "bpp" );
-        rBitsPerPixel = matchString.toUInt();
-        if( !( rBitsPerPixel > 0 && rBitsPerPixel < 16 ) )
-        {
-          rBitsPerPixel = -1;
-        }
-      }
 #endif
     }
 
@@ -534,6 +521,35 @@ Bool VideoSubWindow::guessFormat( QString filename, UInt& rWidth, UInt& rHeight,
       }
     }
 
+    // Guess bits per pixel - match %dbpp
+#if( QT_VERSION_PLAYUVER == 5 )
+    QRegularExpressionMatch BppMatch = QRegularExpression( "_\\d*bpp" ).match( FilenameShort );
+    if( BppMatch.hasMatch() )
+    {
+      QString matchString = BppMatch.captured( 0 );
+      matchString.remove( "_" );
+      matchString.remove( "bpp" );
+      rBitsPerPixel = matchString.toUInt();
+      if( !( rBitsPerPixel > 0 && rBitsPerPixel < 16 ) )
+      {
+        rBitsPerPixel = -1;
+      }
+    }
+#endif
+
+    // Guess Endianness
+    if( rEndianness == -1 )
+    {
+      if( FilenameShort.contains( QStringLiteral( "be" ), Qt::CaseInsensitive ) )
+      {
+        rEndianness = PLAYUVER_BIG_ENDIAN;
+      }
+      if( FilenameShort.contains( QStringLiteral( "le" ), Qt::CaseInsensitive ) )
+      {
+        rEndianness = PLAYUVER_LITTLE_ENDIAN;
+      }
+    }
+
     if( rWidth > 0 && rHeight > 0 && rInputFormat >= 0 )
       bGuessed = true && !bGuessedByFilesize;
   }
diff --git a/app/VideoSubWindow.h b/app/VideoSubWindow.h
index b803912..badbb44 100644
--- a/app/VideoSubWindow.h
+++ b/app/VideoSubWindow.h
@@ -103,7 +103,7 @@ private:
 
   Void refreshFrameOperation();
 
-  static Bool guessFormat( QString filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBitsPerPixel );
+  static Bool guessFormat( QString filename, UInt& rWidth, UInt& rHeight, Int& rInputFormat, UInt& rBitsPerPixel, Int& rEndianness );
 
   /**
    * Private zoom function to handle
@@ -164,6 +164,11 @@ public:
     return m_pCurrStream;
   }
 
+  PlaYUVerStream* getCurrStream()
+  {
+    return m_pCurrStream;
+  }
+
   PlaYUVerFrame* getCurrFrame()
   {
     return m_pcCurrFrame;
diff --git a/lib/PlaYUVerDefs.h b/lib/PlaYUVerDefs.h
index 647541d..7461c49 100644
--- a/lib/PlaYUVerDefs.h
+++ b/lib/PlaYUVerDefs.h
@@ -115,6 +115,13 @@ enum RGBcomponent
   COLOR_A,
 };
 
+enum Endianness
+{
+  PLAYUVER_BIG_ENDIAN = 0,
+  PLAYUVER_LITTLE_ENDIAN = 1,
+};
+
+
 inline String lowercase( const String& in )
 {
   String out;