1 files changed, 51 insertions, 0 deletions
diff --git a/pw_log_tokenized/public/pw_log_tokenized/base64.h b/pw_log_tokenized/public/pw_log_tokenized/base64.h
new file mode 100644
index 000000000..89e7a199f
--- /dev/null
+++ b/pw_log_tokenized/public/pw_log_tokenized/base64.h
@@ -0,0 +1,51 @@
+// Copyright 2023 The Pigweed Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License. You may obtain a copy of
+// the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations under
+// the License.
+#pragma once
+
+#include <cstddef>
+#include <type_traits>
+
+#include "pw_log_tokenized/config.h"
+#include "pw_tokenizer/base64.h"
+
+namespace pw::log_tokenized {
+
+// Minimum capacity for a string that to hold the Base64-encoded version of a
+// PW_LOG_TOKENIZED_ENCODING_BUFFER_SIZE_BYTES tokenized message. This is the
+// capacity needed to encode to a `pw::InlineString` and does not include a null
+// terminator.
+inline constexpr size_t kBase64EncodedBufferSizeBytes =
+    tokenizer::Base64EncodedBufferSize(kEncodingBufferSizeBytes);
+
+/// Encodes a binary tokenized log in the prefixed Base64 format. Calls
+/// @cpp_func{pw::tokenizer::PrefixedBase64Encode} for a string sized to fit a
+/// `kEncodingBufferSizeBytes` tokenized log.
+inline InlineString<kBase64EncodedBufferSizeBytes> PrefixedBase64Encode(
+    span<const std::byte> binary_message) {
+  return tokenizer::PrefixedBase64Encode<kEncodingBufferSizeBytes>(
+      binary_message);
+}
+
+#ifndef PW_EXCLUDE_FROM_DOXYGEN  // Doxygen fails to parse this, so skip it.
+
+template <typename T,
+          typename = std::enable_if_t<sizeof(T) == sizeof(std::byte)>>
+inline InlineString<kBase64EncodedBufferSizeBytes> PrefixedBase64Encode(
+    const T* log_buffer, size_t size_bytes) {
+  return PrefixedBase64Encode(as_bytes(span(log_buffer, size_bytes)));
+}
+
+#endif  // PW_EXCLUDE_FROM_DOXYGEN
+
+}  // namespace pw::log_tokenized