1 files changed, 53 insertions, 0 deletions
diff --git a/includes/xmpmeta/jpeg_io.h b/includes/xmpmeta/jpeg_io.h
new file mode 100644
index 0000000..aba2b5a
--- /dev/null
+++ b/includes/xmpmeta/jpeg_io.h
@@ -0,0 +1,53 @@
+#ifndef DYNAMIC_DEPTH_INCLUDES_XMPMETA_JPEG_IO_H_  // NOLINT
+#define DYNAMIC_DEPTH_INCLUDES_XMPMETA_JPEG_IO_H_  // NOLINT
+
+#include <string>
+#include <vector>
+
+#include "base/port.h"
+
+namespace photos_editing_formats {
+
+// Contains the data for a section in a JPEG file.
+// A JPEG file contains many sections in addition to image data.
+struct Section {
+  // Constructors.
+  Section() = default;
+  explicit Section(const string& buffer);
+
+  // Returns true if the section's marker matches an APP1 marker.
+  bool IsMarkerApp1();
+
+  int marker;
+  bool is_image_section;
+  string data;
+};
+
+struct ParseOptions {
+  // If set to true, keeps only the EXIF and XMP sections (with
+  // marker kApp1) and ignores others. Otherwise, keeps everything including
+  // image data.
+  bool read_meta_only = false;
+
+  // If section_header is set, this boolean controls whether only the 1st
+  // section matching the section_header will be returned. If not set
+  // (the default), all the sections that math the section header will be
+  // returned.
+  bool section_header_return_first = false;
+
+  // A filter that keeps all the sections whose data starts with the
+  // given string. Ignored if empty.
+  string section_header;
+};
+
+// Parses the JPEG image file.
+std::vector<Section> Parse(const ParseOptions& options,
+                           std::istream* input_stream);
+
+// Writes JPEG data sections to a file.
+void WriteSections(const std::vector<Section>& sections,
+                   std::ostream* output_stream);
+
+}  // namespace photos_editing_formats
+
+#endif // DYNAMIC_DEPTH_INCLUDES_XMPMETA_JPEG_IO_H_  // NOLINT