Initial community commit

Src/Plugins/Input/in_flv/FLVMetadata.cpp

@@ -0,0 +1,112 @@
+#include "FLVMetadata.h"
+#include "FLVUtil.h"
+#include <windows.h>
+
+/*
+(c) 2006 Nullsoft, Inc.
+Author: Ben Allison benski@nullsoft.com 
+*/
+
+/*
+
+type - uint8 -
+length - uint16
+
+*/
+
+
+AMFType *MakeObject(uint8_t type)
+{
+	switch(type)
+	{
+	case AMFType::TYPE_DOUBLE: // double
+		return new AMFDouble;
+	case AMFType::TYPE_BOOL: // bool
+		return new AMFBoolean;
+	case AMFType::TYPE_STRING: // string
+		return new AMFString;
+	case AMFType::TYPE_OBJECT: // object
+		return new AMFObj;
+	case AMFType::TYPE_MOVIE: // movie (basically just a URL)
+		return new AMFString;
+	case AMFType::TYPE_NULL: // null
+		return 0;
+	case AMFType::TYPE_REFERENCE: // reference
+		return 0;
+	case AMFType::TYPE_MIXEDARRAY:
+		return new AMFMixedArray;
+	case AMFType::TYPE_TERMINATOR:
+		return new AMFTerminator;
+	case AMFType::TYPE_ARRAY:
+		return new AMFArray;
+	case AMFType::TYPE_DATE: // date
+		return new AMFTime;
+	case AMFType::TYPE_LONG_STRING: // long string
+		return new AMFLongString;
+	case AMFType::TYPE_XML: // XML
+		return 0;
+	default:
+		return 0;
+	}
+}
+
+FLVMetadata::FLVMetadata()
+{
+}
+
+FLVMetadata::~FLVMetadata()
+{
+	for ( FLVMetadata::Tag *tag : tags )
+		delete tag;
+}
+
+bool FLVMetadata::Read(uint8_t *data, size_t size)
+{
+	// TODO: there can be multiple name/value pairs so we could read them all
+	while(size)
+	{
+		uint8_t type=*data; 
+		data++; 	
+		size--;
+
+		if (type == 0 && size >= 2 && data[0] == 0 && data[1] == AMFType::TYPE_TERMINATOR) // check for terminator
+			return true; // array is done
+
+		if (type != AMFType::TYPE_STRING) // first entry is a string, verify this
+			return false;  // malformed, lets bail
+
+		FLVMetadata::Tag *tag = new FLVMetadata::Tag;
+		
+		// read name
+		size_t skip = tag->name.Read(data, size);
+		data+=skip;
+		size-=skip;
+
+		type=*data; 
+		data++; 	
+		size--;
+
+		if (type != AMFType::TYPE_MIXEDARRAY) // second entry is an associative array, verify this
+		{
+			delete tag;
+			return false; // malformed, lets bail
+		}
+
+		tag->parameters = new AMFMixedArray; // we're new'ing this because we need to reference count
+		skip = tag->parameters->Read(data, size);
+		data+=skip;
+		size-=skip;
+		tags.push_back(tag);
+	}
+
+	return true;
+}
+
+FLVMetadata::Tag::Tag() : parameters(0)
+{
+}
+		FLVMetadata::Tag::~Tag()
+		{
+			if (parameters)
+				parameters->Release();
+		}