Prepare cscore for merge into allwpilib.

cscore/src/main/native/cpp/JpegUtil.h

@@ -0,0 +1,33 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2016-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CSCORE_JPEGUTIL_H_
+#define CSCORE_JPEGUTIL_H_
+
+#include <string>
+
+#include <llvm/StringRef.h>
+
+namespace wpi {
+class raw_istream;
+}  // namespace wpi
+
+namespace cs {
+
+bool IsJpeg(llvm::StringRef data);
+
+bool GetJpegSize(llvm::StringRef data, int* width, int* height);
+
+bool JpegNeedsDHT(const char* data, size_t* size, size_t* locSOF);
+
+llvm::StringRef JpegGetDHT();
+
+bool ReadJpeg(wpi::raw_istream& is, std::string& buf, int* width, int* height);
+
+}  // namespace cs
+
+#endif  // CSCORE_JPEGUTIL_H_