Video/Screenshare loopback tool.

webrtc/system_wrappers/source/clock.cc

 /*
  *  Copyright (c) 2013 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 "webrtc/system_wrappers/include/clock.h"
 
 #if defined(_WIN32)
 // Windows needs to be included before mmsystem.h
 #include "webrtc/rtc_base/win32.h"
 #include <MMSystem.h>
 #elif ((defined WEBRTC_LINUX) || (defined WEBRTC_MAC))
 #include <sys/time.h>
 #include <time.h>
 #endif
 
+#include <sstream>
+
 #include "webrtc/rtc_base/criticalsection.h"
 #include "webrtc/rtc_base/timeutils.h"
 #include "webrtc/system_wrappers/include/rw_lock_wrapper.h"
 
+extern int64_t start_time;
+
+void Print(const char* fmt, ...) {
+  const static int kBufferSize = 5000;
+  char buffer[kBufferSize];
+  int64_t now_ms = webrtc::Clock::GetRealTimeClock()->TimeInMilliseconds();
+  if (start_time == -1)
+    start_time = now_ms;
+
+  int bytes_written;
+  bytes_written = snprintf(buffer, kBufferSize, "%8ld - ", now_ms - start_time);
+  va_list args;
+  va_start(args, fmt);
+  bytes_written +=
+      vsnprintf(buffer + bytes_written, kBufferSize - bytes_written, fmt, args);
+  assert(bytes_written < kBufferSize);
+  va_end(args);
+  printf("%s\n", buffer);
+}
+
 namespace webrtc {
 
 class RealTimeClock : public Clock {
   // Return a timestamp in milliseconds relative to some arbitrary source; the
   // source is fixed for this clock.
   int64_t TimeInMilliseconds() const override {
     return rtc::TimeMillis();
   }
 
   // Return a timestamp in microseconds relative to some arbitrary source; the
@@ skipping 221 matching lines @@
 void SimulatedClock::AdvanceTimeMilliseconds(int64_t milliseconds) {
   AdvanceTimeMicroseconds(1000 * milliseconds);
 }
 
 void SimulatedClock::AdvanceTimeMicroseconds(int64_t microseconds) {
   WriteLockScoped synchronize(*lock_);
   time_us_ += microseconds;
 }
 
 };  // namespace webrtc