Initial release

thirdparty/libwebm/webm_parser/src/id_element_parser.h

@@ -0,0 +1,56 @@
+// Copyright (c) 2016 The WebM project authors. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS.  All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+#ifndef SRC_ID_ELEMENT_PARSER_H_
+#define SRC_ID_ELEMENT_PARSER_H_
+
+#include <cstdint>
+
+#include "src/element_parser.h"
+#include "webm/callback.h"
+#include "webm/reader.h"
+#include "webm/status.h"
+
+namespace webm {
+
+class IdElementParser : public ElementParser {
+ public:
+  IdElementParser() = default;
+
+  IdElementParser(IdElementParser&&) = default;
+  IdElementParser& operator=(IdElementParser&&) = default;
+
+  IdElementParser(const IdElementParser&) = delete;
+  IdElementParser& operator=(const IdElementParser&) = delete;
+
+  Status Init(const ElementMetadata& metadata, std::uint64_t max_size) override;
+
+  Status Feed(Callback* callback, Reader* reader,
+              std::uint64_t* num_bytes_read) override;
+
+  // Gets the parsed Id. This must not be called until the parse had been
+  // successfully completed.
+  Id value() const {
+    assert(num_bytes_remaining_ == 0);
+    return value_;
+  }
+
+  // Gets the parsed Id. This must not be called until the parse had been
+  // successfully completed.
+  Id* mutable_value() {
+    assert(num_bytes_remaining_ == 0);
+    return &value_;
+  }
+
+ private:
+  Id value_;
+  int num_bytes_remaining_ = -1;
+};
+
+}  // namespace webm
+
+#endif  // SRC_ID_ELEMENT_PARSER_H_