update docs against 5569

Signed-off-by: Nwusongqing <wusongqing@huawei.com>

en/application-dev/media/opensles-capture.md

@@ -2,10 +2,7 @@
 
 ## When to Use
 
-You can use OpenSL ES to develop the audio recording function in OpenHarmony. Currently, only some
-[OpenSL ES APIs](https://gitee.com/openharmony/third_party_opensles/blob/master/api/1.0.1/OpenSLES.h) are implemented. If an API that has not been implemented yet is called, **SL_RESULT_FEATURE_UNSUPPORTED** will be returned.
-
- 
+You can use OpenSL ES to develop the audio recording function in OpenHarmony. Currently, only some [OpenSL ES APIs](https://gitee.com/openharmony/third_party_opensles/blob/master/api/1.0.1/OpenSLES.h) are implemented. If an API that has not been implemented is called, **SL_RESULT_FEATURE_UNSUPPORTED** will be returned.
 
 ## How to Develop
 
@@ -27,8 +24,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
     (*engineObject)->Realize(engineObject, SL_BOOLEAN_FALSE);
     ```
 
-    
-
 3. Obtain the **engineEngine** instance of the **SL_IID_ENGINE** interface.
 
     ```c++
@@ -36,8 +31,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
     result = (*engineObject)->GetInterface(engineObject, SL_IID_ENGINE, &engineItf);
     ```
 
-    
-
 4. Configure the recorder information (including the input source **audiosource** and output source **audiosink**), and create a **pcmCapturerObject** instance.
 
     ```c++
@@ -82,20 +75,18 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
 
 5. Obtain the **recordItf** instance of the **SL_IID_RECORD** interface.
  
-    ```
+    ```c++
     SLRecordItf  recordItf;
     (*pcmCapturerObject)->GetInterface(pcmCapturerObject, SL_IID_RECORD, &recordItf);
     ```   
 
 6. Obtain the **bufferQueueItf** instance of the **SL_IID_OH_BUFFERQUEUE** interface.
 
-    ```
+    ```c++
     SLOHBufferQueueItf bufferQueueItf;
     (*pcmCapturerObject)->GetInterface(pcmCapturerObject, SL_IID_OH_BUFFERQUEUE, &bufferQueueItf);
     ```
 
-    
-
 7. Register the **BufferQueueCallback** function.
 
     ```c++
@@ -120,7 +111,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
     (*bufferQueueItf)->RegisterCallback(bufferQueueItf, BufferQueueCallback, wavFile_);
     ```
 
-
 8. Start audio recording.
 
     ```c++
@@ -145,7 +135,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
     }
     ```
 
-
 9. Stop audio recording.
 
     ```c++

en/application-dev/media/opensles-playback.md

 # OpenSL ES Audio Playback Development
 
- 
-
 ## When to Use
 
 You can use OpenSL ES to develop the audio playback function in OpenHarmony. Currently, only some [OpenSL ES APIs](https://gitee.com/openharmony/third_party_opensles/blob/master/api/1.0.1/OpenSLES.h) are implemented. If an API that has not been implemented is called, **SL_RESULT_FEATURE_UNSUPPORTED** will be returned.
  
- 
-
 ## How to Develop
 
 To use OpenSL ES to develop the audio playback function in OpenHarmony, perform the following steps:
@@ -20,8 +16,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     #include <OpenSLES_Platform.h>
     ```
 
-    
-
 2. Use the **slCreateEngine** API to obtain an **engine** instance.
 
     ```c++
@@ -30,8 +24,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     (*engineObject)->Realize(engineObject, SL_BOOLEAN_FALSE);
     ```
 
-    
-
 3. Obtain the **engineEngine** instance of the **SL_IID_ENGINE** interface.
 
     ```c++
@@ -39,8 +31,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     (*engineObject)->GetInterface(engineObject, SL_IID_ENGINE, &engineEngine);
     ```
 
-    
-
 4. Configure the player and create an **AudioPlayer** instance.
 
     ```c++
@@ -66,8 +56,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     (*pcmPlayerObject)->Realize(pcmPlayerObject, SL_BOOLEAN_FALSE);
     ```
 
-    
-
 5. Obtain the **bufferQueueItf** instance of the **SL_IID_OH_BUFFERQUEUE** interface.
 
     ```
@@ -75,8 +63,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     (*pcmPlayerObject)->GetInterface(pcmPlayerObject, SL_IID_OH_BUFFERQUEUE, &bufferQueueItf);
     ```
 
-    
-
 6. Open an audio file and register the **BufferQueueCallback** function.
 
     ```c++
@@ -101,8 +87,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     (*bufferQueueItf)->RegisterCallback(bufferQueueItf, BufferQueueCallback, wavFile_);
     ```
 
-    
-
 7. Obtain the **playItf** instance of the **SL_PLAYSTATE_PLAYING** interface and start playback.
 
     ```c++
@@ -111,8 +95,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
     (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING);
     ```
 
-    
-
 8. Stop audio playback.
 
     ```c++

en/application-dev/media/video-recorder.md

@@ -8,8 +8,6 @@ During video recording, audio and video signals are captured, encoded, and saved
 
 ![en-us_image_video_recorder_state_machine](figures/en-us_image_video_recorder_state_machine.png)
 
-
-
 **Figure 2** Layer 0 diagram of video recording
 
 ![en-us_image_video_recorder_zero](figures/en-us_image_video_recorder_zero.png)