diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index d19c4b06dc..dd1b10677c 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -251,9 +251,8 @@ ifeq ($(CONFIG_SIM_CAMERA_V4L2),y)
 endif
 
 ifeq ($(CONFIG_SIM_VIDEO_DECODER),y)
-  HOSTSRCS += sim_hostdecoder.c
   CSRCS += sim_decoder.c
-  STDLIBS += -lopenh264
+  CSRCS += sim_openh264dec.c
 endif
 
 ifeq ($(CONFIG_SIM_VIDEO_ENCODER),y)
diff --git a/arch/sim/src/sim/sim_decoder.c b/arch/sim/src/sim/sim_decoder.c
index c9f4f7592a..f5d61b3651 100644
--- a/arch/sim/src/sim/sim_decoder.c
+++ b/arch/sim/src/sim/sim_decoder.c
@@ -28,7 +28,7 @@
 #include <nuttx/kmalloc.h>
 #include <nuttx/video/v4l2_m2m.h>
 
-#include "sim_hostdecoder.h"
+#include "sim_openh264dec.h"
 #include "sim_internal.h"
 
 /****************************************************************************
@@ -43,13 +43,13 @@
 
 struct sim_decoder_s
 {
-  struct host_decoder_s *decoder;
-  struct v4l2_format    output_fmt;
-  struct v4l2_format    capture_fmt;
-  struct work_s         work;
-  void                  *cookie;
-  bool                  capture_on;
-  bool                  flushing;
+  struct openh264_decoder_s *decoder;
+  struct v4l2_format        output_fmt;
+  struct v4l2_format        capture_fmt;
+  struct work_s             work;
+  void                      *cookie;
+  bool                      capture_on;
+  bool                      flushing;
 };
 
 typedef struct sim_decoder_s sim_decoder_t;
@@ -133,7 +133,7 @@ static struct codec_s g_sim_codec_decoder =
 static int sim_decoder_open(void *cookie, void **priv)
 {
   sim_decoder_t *sim_decoder;
-  struct host_decoder_s *decoder;
+  struct openh264_decoder_s *decoder;
 
   sim_decoder = kmm_zalloc(sizeof(sim_decoder_t));
   if (sim_decoder == NULL)
@@ -141,7 +141,7 @@ static int sim_decoder_open(void *cookie, void **priv)
       return -ENOMEM;
     }
 
-  decoder = host_decoder_open();
+  decoder = openh264_decoder_open();
   if (decoder == NULL)
     {
       kmm_free(sim_decoder);
@@ -159,7 +159,7 @@ static int sim_decoder_close(void *priv)
 {
   sim_decoder_t *sim_decoder = priv;
 
-  host_decoder_close(sim_decoder->decoder);
+  openh264_decoder_close(sim_decoder->decoder);
   kmm_free(sim_decoder);
 
   return 0;
@@ -180,7 +180,7 @@ static int sim_decoder_output_streamon(void *priv)
 {
   sim_decoder_t *sim_decoder = priv;
 
-  return host_decoder_streamon(sim_decoder->decoder);
+  return openh264_decoder_streamon(sim_decoder->decoder);
 }
 
 static int sim_decoder_capture_streamoff(void *priv)
@@ -188,7 +188,7 @@ static int sim_decoder_capture_streamoff(void *priv)
   sim_decoder_t *sim_decoder = priv;
 
   sim_decoder->capture_on = false;
-  return host_decoder_streamoff(sim_decoder->decoder);
+  return openh264_decoder_streamoff(sim_decoder->decoder);
 }
 
 static int sim_decoder_output_streamoff(void *priv)
@@ -407,8 +407,8 @@ static int sim_decoder_process(sim_decoder_t *sim_decoder,
                  src_buf->timestamp.tv_usec;
     }
 
-  ret = host_decoder_enqueue(sim_decoder->decoder,
-                             src_data, src_pts, src_size);
+  ret = openh264_decoder_enqueue(sim_decoder->decoder,
+                                 src_data, src_pts, src_size);
   if (ret >= 0 && src_buf != NULL)
     {
       codec_output_put_buf(sim_decoder->cookie, src_buf);
@@ -419,10 +419,10 @@ static int sim_decoder_process(sim_decoder_t *sim_decoder,
       return ret;
     }
 
-  ret = host_decoder_dequeue(sim_decoder->decoder,
-                             (uint8_t *)dst_buf->m.userptr,
-                             &dst_pts,
-                             &dst_buf->bytesused);
+  ret = openh264_decoder_dequeue(sim_decoder->decoder,
+                                 (uint8_t *)dst_buf->m.userptr,
+                                 &dst_pts,
+                                 &dst_buf->bytesused);
   if (ret == 0 && src_buf == NULL)
     {
       sim_decoder->flushing = false;
diff --git a/arch/sim/src/sim/sim_hostdecoder.c b/arch/sim/src/sim/sim_openh264dec.c
similarity index 88%
rename from arch/sim/src/sim/sim_hostdecoder.c
rename to arch/sim/src/sim/sim_openh264dec.c
index 5d2c2fcec4..ec6d96c82c 100644
--- a/arch/sim/src/sim/sim_hostdecoder.c
+++ b/arch/sim/src/sim/sim_openh264dec.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * arch/sim/src/sim/sim_hostdecoder.c
+ * arch/sim/src/sim/sim_openh264dec.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -30,13 +30,13 @@
 #include <wels/codec_api.h>
 #include <wels/codec_app_def.h>
 
-#include "sim_hostdecoder.h"
+#include "sim_openh264dec.h"
 
 /****************************************************************************
  * Private Types
  ****************************************************************************/
 
-struct host_decoder_s
+struct openh264_decoder_s
 {
   ISVCDecoder *dec;
   SBufferInfo bufinfo;
@@ -52,11 +52,11 @@ struct host_decoder_s
  * Public Functions
  ****************************************************************************/
 
-struct host_decoder_s *host_decoder_open(void)
+struct openh264_decoder_s *openh264_decoder_open(void)
 {
-  struct host_decoder_s *decoder;
+  struct openh264_decoder_s *decoder;
 
-  decoder = calloc(1, sizeof(struct host_decoder_s));
+  decoder = calloc(1, sizeof(struct openh264_decoder_s));
   if (decoder == NULL)
     {
       syslog(LOG_ERR, "Init host decoder failed\n");
@@ -65,13 +65,13 @@ struct host_decoder_s *host_decoder_open(void)
   return decoder;
 }
 
-int host_decoder_close(struct host_decoder_s *decoder)
+int openh264_decoder_close(struct openh264_decoder_s *decoder)
 {
   free(decoder);
   return 0;
 }
 
-int host_decoder_streamon(struct host_decoder_s *decoder)
+int openh264_decoder_streamon(struct openh264_decoder_s *decoder)
 {
   SDecodingParam param;
   int level = WELS_LOG_RESV;
@@ -102,7 +102,7 @@ int host_decoder_streamon(struct host_decoder_s *decoder)
   return ret;
 }
 
-int host_decoder_streamoff(struct host_decoder_s *decoder)
+int openh264_decoder_streamoff(struct openh264_decoder_s *decoder)
 {
   (*decoder->dec)->Uninitialize(decoder->dec);
   WelsDestroyDecoder(decoder->dec);
@@ -111,8 +111,8 @@ int host_decoder_streamoff(struct host_decoder_s *decoder)
   return 0;
 }
 
-int host_decoder_enqueue(struct host_decoder_s *decoder,
-                         void *data, int64_t pts, int size)
+int openh264_decoder_enqueue(struct openh264_decoder_s *decoder,
+                             void *data, int64_t pts, int size)
 {
   DECODING_STATE state;
 
@@ -166,8 +166,8 @@ int host_decoder_enqueue(struct host_decoder_s *decoder,
   return decoder->bufinfo.iBufferStatus;
 }
 
-int host_decoder_dequeue(struct host_decoder_s *decoder,
-                         void *data, int64_t *pts, uint32_t *size)
+int openh264_decoder_dequeue(struct openh264_decoder_s *decoder,
+                             void *data, int64_t *pts, uint32_t *size)
 {
   uint8_t *dst_addr = data;
   int plane;
@@ -203,3 +203,4 @@ int host_decoder_dequeue(struct host_decoder_s *decoder,
 
   return decoder->remaining_frames;
 }
+
diff --git a/arch/sim/src/sim/sim_hostdecoder.h b/arch/sim/src/sim/sim_openh264dec.h
similarity index 67%
rename from arch/sim/src/sim/sim_hostdecoder.h
rename to arch/sim/src/sim/sim_openh264dec.h
index a15412ad84..adfef293c1 100644
--- a/arch/sim/src/sim/sim_hostdecoder.h
+++ b/arch/sim/src/sim/sim_openh264dec.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * arch/sim/src/sim/sim_hostdecoder.h
+ * arch/sim/src/sim/sim_openh264dec.h
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -18,8 +18,8 @@
  *
  ****************************************************************************/
 
-#ifndef __ARCH_SIM_SRC_SIM_SIM_HOSTDECODER_H
-#define __ARCH_SIM_SRC_SIM_SIM_HOSTDECODER_H
+#ifndef __ARCH_SIM_SRC_SIM_SIM_OPENH264DEC_H
+#define __ARCH_SIM_SRC_SIM_SIM_OPENH264DEC_H
 
 /****************************************************************************
  * Included Files
@@ -31,20 +31,20 @@
  * Public Types
  ****************************************************************************/
 
-struct host_decoder_s;
+struct openh264_decoder_s;
 
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/
 
-struct host_decoder_s *host_decoder_open(void);
-int host_decoder_close(struct host_decoder_s *decoder);
-int host_decoder_streamon(struct host_decoder_s *decoder);
-int host_decoder_streamoff(struct host_decoder_s *decoder);
-int host_decoder_enqueue(struct host_decoder_s *decoder,
-                         void *data, int64_t pts, int size);
-int host_decoder_dequeue(struct host_decoder_s *decoder,
-                         void *data, int64_t *pts, uint32_t *size);
+struct openh264_decoder_s *openh264_decoder_open(void);
+int openh264_decoder_close(struct openh264_decoder_s *decoder);
+int openh264_decoder_streamon(struct openh264_decoder_s *decoder);
+int openh264_decoder_streamoff(struct openh264_decoder_s *decoder);
+int openh264_decoder_enqueue(struct openh264_decoder_s *decoder,
+                             void *data, int64_t pts, int size);
+int openh264_decoder_dequeue(struct openh264_decoder_s *decoder,
+                             void *data, int64_t *pts, uint32_t *size);
 
-#endif /* __ARCH_SIM_SRC_SIM_SIM_HOSTDECODER_H */
+#endif /* __ARCH_SIM_SRC_SIM_SIM_OPENH264DEC_H */