C-style bindings around RTC event log analyzer.

This is currently a stub. The analysis will be added in a followup CL.


No-Try: True
Bug: None
Change-Id: Ief381d0c30ec29a0ef170523d31f1f902d0e6b09
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/324620
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40989}

rtc_tools/BUILD.gn

@@ -423,6 +423,15 @@ if (!build_with_chromium) {
         "//third_party/abseil-cpp/absl/types:optional",
       ]
     }
+
+    rtc_library("event_log_visualizer_bindings") {
+      visibility = [ "*" ]
+      sources = [
+        "rtc_event_log_visualizer/analyzer_bindings.cc",
+        "rtc_event_log_visualizer/analyzer_bindings.h",
+      ]
+      deps = [ ":event_log_visualizer_utils" ]
+    }
   }
 
   rtc_executable("video_encoder") {

rtc_tools/rtc_event_log_visualizer/analyzer_bindings.cc

@@ -0,0 +1,27 @@
+/*
+ *  Copyright (c) 2023 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.
+ */
+
+#include "rtc_tools/rtc_event_log_visualizer/analyzer_bindings.h"
+
+#include <algorithm>
+#include <cstddef>
+
+void analyze_rtc_event_log(const char* log,
+                           size_t log_size,
+                           const char* selection,
+                           size_t selection_size,
+                           char* output,
+                           size_t* output_size) {
+  size_t size = std::min(log_size, *output_size);
+  for (size_t i = 0; i < size; ++i) {
+    output[i] = log[i];
+  }
+  *output_size = size;
+}

rtc_tools/rtc_event_log_visualizer/analyzer_bindings.h

@@ -0,0 +1,23 @@
+/*
+ *  Copyright (c) 2023 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 RTC_TOOLS_RTC_EVENT_LOG_VISUALIZER_ANALYZER_BINDINGS_H_
+#define RTC_TOOLS_RTC_EVENT_LOG_VISUALIZER_ANALYZER_BINDINGS_H_
+
+#include <cstddef>
+
+void analyze_rtc_event_log(const char* log,
+                           size_t log_size,
+                           const char* selection,
+                           size_t selection_size,
+                           char* output,
+                           size_t* output_size);
+
+#endif  // RTC_TOOLS_RTC_EVENT_LOG_VISUALIZER_ANALYZER_BINDINGS_H_