OH _Audio播放音频问题

typedef struct OH_AudioRenderer_Callbacks_Struct { 
  /** 
   This function pointer will point to the callback function that 
   is used to write audio data 
   @since 10 
   / 
   int32_t (OH_AudioRenderer_OnWriteData)( 
   OH_AudioRenderer renderer, 
   void userData, 
   void* buffer, 
   int32_t lenth); 
   /** 
 
   This function pointer will point to the callback function that 
   is used to handle audio renderer stream events. 
   @since 10 
   / 
   int32_t (OH_AudioRenderer_OnStreamEvent)( 
   OH_AudioRenderer renderer, 
   void userData, 
   OH_AudioStream_Event event); 
   /** 
 
   This function pointer will point to the callback function that 
   is used to handle audio interrupt events. 
   @since 10 
   / 
   int32_t (OH_AudioRenderer_OnInterruptEvent)( 
   OH_AudioRenderer renderer, 
   void userData, 
   OH_AudioInterrupt_ForceType type, 
   OH_AudioInterrupt_Hint hint); 
   /** 
 
   This function pointer will point to the callback function that 
   is used to handle audio error result. 
   @since 10 
   / 
   int32_t (OH_AudioRenderer_OnError)( 
   OH_AudioRenderer renderer, 
   void userData, 
   OH_AudioStream_Result error); 
   } OH_AudioRenderer_Callbacks;