Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/third_party/libwebrtc/logging/rtc_event_log/encoder/blob_encoding.h b/third_party/libwebrtc/logging/rtc_event_log/encoder/blob_encoding.h
new file mode 100644
index 0000000000..123fffe8e8
--- /dev/null
+++ b/third_party/libwebrtc/logging/rtc_event_log/encoder/blob_encoding.h
@@ -0,0 +1,53 @@
+/*
+ *  Copyright (c) 2018 The WebRTC 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 LOGGING_RTC_EVENT_LOG_ENCODER_BLOB_ENCODING_H_
+#define LOGGING_RTC_EVENT_LOG_ENCODER_BLOB_ENCODING_H_
+
+#include <stddef.h>
+
+#include <string>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+
+namespace webrtc {
+
+// Encode/decode a sequence of strings, whose length is not known to be
+// discernable from the blob itself (i.e. without being transmitted OOB),
+// in a way that would allow us to separate them again on the decoding side.
+// The number of blobs is assumed to be transmitted OOB. For example, if
+// multiple sequences of different blobs are sent, but all sequences contain
+// the same number of blobs, it is beneficial to not encode the number of blobs.
+//
+// EncodeBlobs() must be given a non-empty vector. The blobs themselves may
+// be equal to "", though.
+// EncodeBlobs() may not fail.
+// EncodeBlobs() never returns the empty string.
+//
+// Calling DecodeBlobs() on an empty string, or with `num_of_blobs` set to 0,
+// is an error.
+// DecodeBlobs() returns an empty vector if it fails, e.g. due to a mismatch
+// between `num_of_blobs` and `encoded_blobs`, which can happen if
+// `encoded_blobs` is corrupted.
+// When successful, DecodeBlobs() returns a vector of string_view objects,
+// which refer to the original input (`encoded_blobs`), and therefore may
+// not outlive it.
+//
+// Note that the returned std::string might have been reserved for significantly
+// more memory than it ends up using. If the caller to EncodeBlobs() intends
+// to store the result long-term, they should consider shrink_to_fit()-ing it.
+std::string EncodeBlobs(const std::vector<std::string>& blobs);
+std::vector<absl::string_view> DecodeBlobs(absl::string_view encoded_blobs,
+                                           size_t num_of_blobs);
+
+}  // namespace webrtc
+
+#endif  // LOGGING_RTC_EVENT_LOG_ENCODER_BLOB_ENCODING_H_