- moved libvpx and libsmackerdec to more fitting places, plus some project cleanup.

source/common/thirdparty/libsmackerdec/src/BitReader.cpp

@@ -0,0 +1,90 @@
+/*
+ * libsmackerdec - Smacker video decoder
+ * Copyright (C) 2011 Barry Duncan
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "BitReader.h"
+#include <assert.h>
+
+namespace SmackerCommon {
+
+BitReader::BitReader(SmackerCommon::FileStream &file, uint32_t size)
+{
+	this->file = &file;
+	this->totalSize = size;
+	this->currentOffset = 0;
+	this->bytesRead = 0;
+
+    this->Cache.Resize(size);
+    file.ReadBytes(this->Cache.Data(), size);
+}
+
+BitReader::~BitReader()
+{
+}
+
+void BitReader::FillCache()
+{
+}
+
+uint32_t BitReader::GetSize()
+{
+	return totalSize * 8;
+}
+
+uint32_t BitReader::GetPosition()
+{
+	return currentOffset;
+}
+
+uint32_t BitReader::GetBit()
+{
+	uint32_t ret = (Cache[currentOffset>>3]>>(currentOffset&7))&1;
+    currentOffset++;
+	return ret;
+}
+
+uint32_t BitReader::GetBits(uint32_t n)
+{
+	uint32_t ret = 0;
+
+	int bitsTodo = n;
+
+	uint32_t theShift = 0;
+
+	while (bitsTodo)
+	{
+		uint32_t bit = GetBit();
+		bit <<= theShift;
+
+		theShift++;
+
+		ret |= bit;
+
+		bitsTodo--;
+	}
+
+	return ret;
+}
+
+void BitReader::SkipBits(uint32_t n)
+{
+	GetBits(n);
+}
+
+} // close namespace SmackerCommon
+