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-rw-r--r--media/audio/win/waveout_output_win.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/media/audio/win/waveout_output_win.cc b/media/audio/win/waveout_output_win.cc
index 94c1d4d..6933756 100644
--- a/media/audio/win/waveout_output_win.cc
+++ b/media/audio/win/waveout_output_win.cc
@@ -9,6 +9,7 @@
#pragma comment(lib, "winmm.lib")
#include "base/basictypes.h"
+#include "base/debug/trace_event.h"
#include "base/logging.h"
#include "media/audio/audio_io.h"
#include "media/audio/audio_util.h"
@@ -309,6 +310,8 @@ void PCMWaveOutAudioOutputStream::QueueNextPacket(WAVEHDR *buffer) {
void PCMWaveOutAudioOutputStream::WaveCallback(HWAVEOUT hwo, UINT msg,
DWORD_PTR instance,
DWORD_PTR param1, DWORD_PTR) {
+ TRACE_EVENT0("audio", "PCMWaveOutAudioOutputStream::WaveCallback");
+
PCMWaveOutAudioOutputStream* obj =
reinterpret_cast<PCMWaveOutAudioOutputStream*>(instance);