PixelProperties: added getMaxBitPerChannel

Clement Champetier · Clement Champetier · commit bde4632d5eb3 · 2015-11-05T14:35:28.000+01:00
diff --git a/src/AvTranscoder/mediaProperty/PixelProperties.cpp b/src/AvTranscoder/mediaProperty/PixelProperties.cpp
@@ -56,6 +56,21 @@ size_t PixelProperties::getBitsPerPixel() const
 	return av_get_bits_per_pixel( _pixelDesc );
 }
 
+size_t PixelProperties::getMaxBitPerChannel() const
+{
+	if( ! _pixelDesc )
+		throw std::runtime_error( "unable to find pixel description." );
+
+	size_t maxBitPerChannel = 0;
+	for( unsigned int channelIndex = 0; channelIndex < _pixelDesc->nb_components; ++channelIndex )
+	{
+		const size_t nbBits =  _pixelDesc->comp[channelIndex].depth_minus1 + 1;
+		if( nbBits > maxBitPerChannel )
+			maxBitPerChannel = nbBits;
+	}
+	return maxBitPerChannel;
+}
+
 size_t PixelProperties::getNbComponents() const
 {
 	if( ! _pixelDesc )
diff --git a/src/AvTranscoder/mediaProperty/PixelProperties.hpp b/src/AvTranscoder/mediaProperty/PixelProperties.hpp
@@ -56,6 +56,7 @@ class AvExport PixelProperties
 	std::string getPixelFormatName() const;
 
 	size_t getBitsPerPixel() const;
+	size_t getMaxBitPerChannel() const;
 	size_t getNbComponents() const;
 	size_t getChromaWidth() const;
 	size_t getChromaHeight() const;
