Initial commit

limelight-common/ByteBuffer.cpp

@@ -0,0 +1,98 @@
+#include "ByteBuffer.h"
+
+void BbInitializeWrappedBuffer(PBYTE_BUFFER buff, char* data, int offset, int length, int byteOrder) {
+	buff->buffer = data;
+	buff->offset = offset;
+	buff->length = length;
+	buff->position = 0;
+	buff->byteOrder = byteOrder;
+}
+
+static int byteSwapInt(PBYTE_BUFFER buff, int i) {
+	if (buff->byteOrder == BYTE_ORDER_BIG) {
+		return htonl(i);
+	}
+	else {
+		return i;
+	}
+}
+
+static int byteSwapShort(PBYTE_BUFFER buff, short s) {
+	if (buff->byteOrder == BYTE_ORDER_BIG) {
+		return htons(s);
+	}
+	else {
+		return s;
+	}
+}
+
+int BbGet(PBYTE_BUFFER buff, char *c) {
+	if (buff->position + sizeof(c) >= buff->length) {
+		return 0;
+	}
+
+	memcpy(c, &buff[buff->position], sizeof(*c));
+
+	return 1;
+}
+
+int BbGetShort(PBYTE_BUFFER buff, short *s) {
+	if (buff->position + sizeof(s) >= buff->length) {
+		return 0;
+	}
+
+	memcpy(s, &buff[buff->position], sizeof(*s));
+
+	*s = byteSwapShort(buff, *s);
+
+	return 1;
+}
+
+int BbGetInt(PBYTE_BUFFER buff, int *i) {
+	if (buff->position + sizeof(i) >= buff->length) {
+		return 0;
+	}
+
+	memcpy(i, &buff[buff->position], sizeof(*i));
+
+	*i = byteSwapInt(buff, *i);
+
+	return 1;
+}
+
+int BbPutInt(PBYTE_BUFFER buff, int i) {
+	if (buff->position + sizeof(i) >= buff->length) {
+		return 0;
+	}
+
+	i = byteSwapInt(buff, i);
+
+	memcpy(&buff[buff->position], &i, sizeof(i));
+	buff->position += sizeof(i);
+
+	return 1;
+}
+
+int BbPutShort(PBYTE_BUFFER buff, short s) {
+	if (buff->position + sizeof(s) >= buff->length) {
+		return 0;
+	}
+
+	s = byteSwapShort(buff, s);
+
+	memcpy(&buff[buff->position], &s, sizeof(s));
+	buff->position += sizeof(s);
+
+	return 1;
+}
+
+int BbPut(PBYTE_BUFFER buff, char c) {
+	if (buff->position + sizeof(c) >= buff->length) {
+		return 0;
+	}
+
+	memcpy(&buff[buff->position], &c, sizeof(c));
+	buff->position += sizeof(c);
+	
+	return 1;
+}