1 files changed, 162 insertions, 0 deletions
diff --git a/dom/media/webrtc/common/browser_logging/WebRtcLog.cpp b/dom/media/webrtc/common/browser_logging/WebRtcLog.cpp
new file mode 100644
index 0000000000..0f3769604e
--- /dev/null
+++ b/dom/media/webrtc/common/browser_logging/WebRtcLog.cpp
@@ -0,0 +1,162 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebRtcLog.h"
+
+#include "mozilla/Logging.h"
+#include "mozilla/StaticPtr.h"
+#include "prenv.h"
+#include "rtc_base/logging.h"
+
+#include "nscore.h"
+#include "nsString.h"
+#include "nsXULAppAPI.h"
+#include "mozilla/Preferences.h"
+
+#include "nsIFile.h"
+#include "nsDirectoryServiceUtils.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsNativeCharsetUtils.h"
+
+using mozilla::LogLevel;
+
+static mozilla::LazyLogModule sWebRtcLog("webrtc_trace");
+static mozilla::LazyLogModule sLogAEC("AEC");
+
+class LogSinkImpl : public rtc::LogSink {
+ public:
+  LogSinkImpl() {}
+
+ private:
+  void OnLogMessage(const std::string& message) override {
+    MOZ_LOG(sWebRtcLog, LogLevel::Debug, ("%s", message.data()));
+  }
+};
+
+// For RTC_LOG()
+static mozilla::StaticAutoPtr<LogSinkImpl> sSink;
+
+void GetWebRtcLogPrefs() {
+  rtc::LogMessage::set_aec_debug_size(
+      mozilla::Preferences::GetUint("media.webrtc.debug.aec_dump_max_size"));
+}
+
+mozilla::LogLevel CheckOverrides() {
+  mozilla::LogModule* log_info = sWebRtcLog;
+  mozilla::LogLevel log_level = log_info->Level();
+
+  log_info = sLogAEC;
+  if (sLogAEC && (log_info->Level() != mozilla::LogLevel::Disabled)) {
+    rtc::LogMessage::set_aec_debug(true);
+  }
+
+  return log_level;
+}
+
+void ConfigWebRtcLog(mozilla::LogLevel level) {
+  rtc::LoggingSeverity log_level;
+  switch (level) {
+    case mozilla::LogLevel::Verbose:
+      log_level = rtc::LoggingSeverity::LS_VERBOSE;
+      break;
+    case mozilla::LogLevel::Debug:
+    case mozilla::LogLevel::Info:
+      log_level = rtc::LoggingSeverity::LS_INFO;
+      break;
+    case mozilla::LogLevel::Warning:
+      log_level = rtc::LoggingSeverity::LS_WARNING;
+      break;
+    case mozilla::LogLevel::Error:
+      log_level = rtc::LoggingSeverity::LS_ERROR;
+      break;
+    case mozilla::LogLevel::Disabled:
+      log_level = rtc::LoggingSeverity::LS_NONE;
+      break;
+    default:
+      MOZ_ASSERT(false);
+      break;
+  }
+  rtc::LogMessage::LogToDebug(log_level);
+  if (level != mozilla::LogLevel::Disabled) {
+    // always capture LOG(...) << ... logging in webrtc.org code to nspr logs
+    if (!sSink) {
+      sSink = new LogSinkImpl();
+      rtc::LogMessage::AddLogToStream(sSink, log_level);
+      // it's ok if this leaks to program end
+    }
+  } else if (sSink) {
+    rtc::LogMessage::RemoveLogToStream(sSink);
+    sSink = nullptr;
+  }
+}
+
+void StartWebRtcLog(mozilla::LogLevel log_level) {
+  if (log_level == mozilla::LogLevel::Disabled) {
+    return;
+  }
+
+  GetWebRtcLogPrefs();
+  mozilla::LogLevel level = CheckOverrides();
+
+  ConfigWebRtcLog(level);
+}
+
+void EnableWebRtcLog() {
+  GetWebRtcLogPrefs();
+  mozilla::LogLevel level = CheckOverrides();
+  ConfigWebRtcLog(level);
+}
+
+// Called when we destroy the singletons from PeerConnectionCtx or if the
+// user changes logging in about:webrtc
+void StopWebRtcLog() {
+  if (sSink) {
+    rtc::LogMessage::RemoveLogToStream(sSink);
+    sSink = nullptr;
+  }
+}
+
+nsCString ConfigAecLog() {
+  nsCString aecLogDir;
+  if (rtc::LogMessage::aec_debug()) {
+    return ""_ns;
+  }
+#if defined(ANDROID)
+  const char* default_tmp_dir = "/dev/null";
+  aecLogDir.Assign(default_tmp_dir);
+#else
+  nsCOMPtr<nsIFile> tempDir;
+  nsresult rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(tempDir));
+  if (NS_SUCCEEDED(rv)) {
+#  ifdef XP_WIN
+    // WebRTC wants a path encoded in the native charset, not UTF-8.
+    nsAutoString temp;
+    tempDir->GetPath(temp);
+    NS_CopyUnicodeToNative(temp, aecLogDir);
+#  else
+    tempDir->GetNativePath(aecLogDir);
+#  endif
+  }
+#endif
+  rtc::LogMessage::set_aec_debug_filename(aecLogDir.get());
+
+  return aecLogDir;
+}
+
+nsCString StartAecLog() {
+  nsCString aecLogDir;
+  if (rtc::LogMessage::aec_debug()) {
+    return ""_ns;
+  }
+
+  GetWebRtcLogPrefs();
+  CheckOverrides();
+  aecLogDir = ConfigAecLog();
+
+  rtc::LogMessage::set_aec_debug(true);
+
+  return aecLogDir;
+}
+
+void StopAecLog() { rtc::LogMessage::set_aec_debug(false); }