Initial community commit

Src/nsavi/info.cpp

@@ -0,0 +1,68 @@
+#include "info.h"
+#include "read.h"
+
+nsavi::Info::Info()
+{
+
+}
+
+nsavi::Info::~Info()
+{
+	for (auto itr = this->begin(); itr != this->end(); itr++)
+	{
+		free((void*)itr->second);
+	}
+}
+
+int nsavi::Info::Read(nsavi::avi_reader* reader, uint32_t data_len)
+{
+	while (data_len)
+	{
+		riff_chunk chunk;
+		uint32_t bytes_read = 0;
+		nsavi::read_riff_chunk(reader, &chunk, &bytes_read);
+		data_len -= bytes_read;
+		size_t malloc_size = chunk.size + 1;
+		if (malloc_size == 0)
+			return READ_INVALID_DATA;
+
+		char* str = (char*)calloc(malloc_size, sizeof(char));
+		if (!str)
+			return READ_OUT_OF_MEMORY;
+
+		reader->Read(str, chunk.size, &bytes_read);
+		str[chunk.size] = 0;
+		data_len -= bytes_read;
+
+		Set(chunk.id, str);
+
+		if (chunk.size & 1)
+		{
+			reader->Skip(1);
+			data_len--;
+		}
+	}
+	return 0;
+}
+
+void nsavi::Info::Set(uint32_t chunk_id, const char* data)
+{
+	auto it = this->find(chunk_id);
+	if (this->end() == it)
+	{
+		this->insert({ chunk_id, data });
+	}
+	else
+	{
+		it->second = data;
+	}
+}
+const char* nsavi::Info::GetMetadata(uint32_t id)
+{
+	InfoMap::iterator itr = InfoMap::find(id);
+	if (itr != InfoMap::end())
+	{
+		return itr->second;
+	}
+	return 0;
+}