diff --git a/AudioRender/AudioRender.cpp b/AudioRender/AudioRender.cpp
index f2b4da9..e256506 100644
--- a/AudioRender/AudioRender.cpp
+++ b/AudioRender/AudioRender.cpp
@@ -6,9 +6,15 @@
 #include "IAudioRender.h"
 
 static std::unique_ptr<IAudioRender> audiosRender_;
-bool __stdcall Initialize(const char* sender_name, const char* receiver_name) {
+bool __stdcall Initialize(callback_t cb) {
     assert(!audiosRender_);
-    audiosRender_.reset(IAudioRender::Create());
+
+    auto logCallback = [cb](int32 level, const int8* log, uint32 length) {
+        if (nullptr == cb) {
+            cb(level, log, length);
+        }
+    };
+    audiosRender_.reset(IAudioRender::Create(std::move(logCallback)));
     return true;
 }
 
diff --git a/AudioRender/AudioRender.h b/AudioRender/AudioRender.h
index 8cdcacd..24c6d9a 100644
--- a/AudioRender/AudioRender.h
+++ b/AudioRender/AudioRender.h
@@ -11,8 +11,8 @@
 #ifdef __cplusplus
 extern "C" {
 #endif // __cplusplus
-
-    AUDIO_RENDER_EXPORT bool __stdcall Initialize(const char* sender_name, const char* receiver_name);
+    typedef void (*callback_t)(int, const char*, int);
+    AUDIO_RENDER_EXPORT bool __stdcall Initialize(callback_t cb);
     AUDIO_RENDER_EXPORT bool __stdcall Write(const unsigned char* data, unsigned int len);
     AUDIO_RENDER_EXPORT void __stdcall Uninitialize();
 
diff --git a/AudioRender/AudioRender.vcxproj b/AudioRender/AudioRender.vcxproj
index a1a1d84..647b9c5 100644
--- a/AudioRender/AudioRender.vcxproj
+++ b/AudioRender/AudioRender.vcxproj
@@ -46,7 +46,7 @@
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
@@ -120,6 +120,8 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>NDEBUG;_CONSOLE;WIN32;AUDIO_RENDER_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>D:\Project\AudioRender\AudioRender;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <Optimization>Disabled</Optimization>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/AudioRender/AudioRenderStd.cpp b/AudioRender/AudioRenderStd.cpp
index 575ae75..ffbd439 100644
--- a/AudioRender/AudioRenderStd.cpp
+++ b/AudioRender/AudioRenderStd.cpp
@@ -1,7 +1,22 @@
 #include "AudioRenderStd.h"
 
+#include <sstream>
+
 #include "Windows/WavAudioRender.h"
 
-IAudioRender* IAudioRender::Create() {
-    return new WavAudioRender;
-}
\ No newline at end of file
+IAudioRender* IAudioRender::Create(LogCallback callback) {
+    return new WavAudioRender(std::move(callback));
+}
+
+AudioRenderStd::AudioRenderStd(LogCallback callback) noexcept
+    : callback_(std::move(callback)){
+
+}
+
+void AudioRenderStd::WirteLog(int32 level, const std::string& log) {
+    if (nullptr == callback_) {
+        return;
+    }
+
+    callback_(level, log.c_str(), static_cast<uint32>(log.length()));
+}
diff --git a/AudioRender/AudioRenderStd.h b/AudioRender/AudioRenderStd.h
index aea7328..31335e5 100644
--- a/AudioRender/AudioRenderStd.h
+++ b/AudioRender/AudioRenderStd.h
@@ -1,12 +1,25 @@
 #pragma once
 
+#include <string>
+
 #include "IAudioRender.h"
 
 class AudioRenderStd : public IAudioRender {
 public:
+    enum LOG_LEVEL {
+        DEBUG,
+        LOG
+    };
+public:
+    explicit AudioRenderStd(LogCallback callback) noexcept;
     ~AudioRenderStd() override = default;
     uint64 GetClock() override {
         return 0;
     }
+
+    void WirteLog(int32 level, const std::string& log);
+
+private:
+    LogCallback callback_{ nullptr };
 };
 
diff --git a/AudioRender/IAudioRender.h b/AudioRender/IAudioRender.h
index 30b126c..37d6aad 100644
--- a/AudioRender/IAudioRender.h
+++ b/AudioRender/IAudioRender.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <vector>
+#include <functional>
 
 using int8 = char;
 using uint8 = unsigned char;
@@ -20,7 +21,8 @@ struct AudioFrame {
 
 class IAudioRender {
 public:
-    static IAudioRender* Create();
+    using LogCallback = std::function<void(int32, const int8*, uint32)>;
+    static IAudioRender* Create(LogCallback callback);
 
 public:
     virtual ~IAudioRender() = default;
diff --git a/AudioRender/Windows/WavAudioRender.cpp b/AudioRender/Windows/WavAudioRender.cpp
index d5c5239..7cf3f98 100644
--- a/AudioRender/Windows/WavAudioRender.cpp
+++ b/AudioRender/Windows/WavAudioRender.cpp
@@ -30,7 +30,8 @@ static void FreeBlocks(WAVEHDR* blockArray) {
     HeapFree(GetProcessHeap(), 0, blockArray);
 }
 
-WavAudioRender::WavAudioRender() noexcept {
+WavAudioRender::WavAudioRender(LogCallback callback) noexcept
+    : AudioRenderStd(callback){
     HWAVEOUT hWaveOut = nullptr;
 
     waveBlocks_ = AllocateBlocks(BlockSize_, BlockCount_);
@@ -52,15 +53,20 @@ WavAudioRender::WavAudioRender() noexcept {
     MMRESULT hr = waveOutOpen(&hWaveOut, WAVE_MAPPER, &waveform,
         reinterpret_cast<DWORD_PTR>(WavAudioRender::waveOutProc),
         reinterpret_cast<DWORD_PTR>(this), CALLBACK_FUNCTION);
-    if (MMSYSERR_NOERROR == hr) {
+    if (MMSYSERR_NOERROR != hr) {
+        WirteLog(DEBUG, "init success");
         return;
     }
 
     hWavout_ = std::move(hWaveOut);
+    initialized_ = true;
+    WirteLog(DEBUG, "init success");
 }
 
 WavAudioRender::~WavAudioRender() {
+    initialized_ = false;
     if (nullptr == hWavout_) {
+        WirteLog(DEBUG, "hWavout is nullptr");
         return;
     }
     waveOutReset(hWavout_);
@@ -83,10 +89,13 @@ WavAudioRender::~WavAudioRender() {
         }
     } while (true);
     FreeBlocks(waveBlocks_);
+    WirteLog(DEBUG, "uninitialized success");
 }
 
 bool WavAudioRender::Write(const AudioFrame& audioFrame) {
+    WirteLog(DEBUG, "WavAudioRender::Write");
     if (nullptr == hWavout_) {
+        WirteLog(DEBUG, "hWavout_ is nullptr");
         return false;
     }
 
@@ -116,9 +125,12 @@ bool WavAudioRender::Write(const AudioFrame& audioFrame) {
             --freeBlockCounter_;
         }
 
-        while (!freeBlockCounter_) {
+        while (!freeBlockCounter_ && initialized_) {
             Sleep(1);
         }
+        if (!initialized_) {
+            break;
+        }
 
         ++waveCurrentBlock_;
         waveCurrentBlock_ %= BlockCount_;
diff --git a/AudioRender/Windows/WavAudioRender.h b/AudioRender/Windows/WavAudioRender.h
index 5c48dec..9ac28f5 100644
--- a/AudioRender/Windows/WavAudioRender.h
+++ b/AudioRender/Windows/WavAudioRender.h
@@ -6,7 +6,7 @@
 
 class WavAudioRender : public AudioRenderStd {
 public:
-    explicit WavAudioRender() noexcept;
+    explicit WavAudioRender(LogCallback callback) noexcept;
     ~WavAudioRender() override;
 
     bool Write(const AudioFrame& audioFrame) override;
@@ -19,7 +19,7 @@ private:
 private:
     int64_t audioPts_{ 0 };
 
-    static constexpr int BlockSize_{ 6400 };
+    static constexpr int BlockSize_{ 3200 };
     static constexpr int BlockCount_{ 10 };
 
     SectionLock lock_;
@@ -28,4 +28,5 @@ private:
 
     WAVEHDR* waveBlocks_{ nullptr };
     HWAVEOUT hWavout_{ nullptr };
+    bool initialized_{ false };
 };