diff --git a/test/ixheaacd_main.c b/test/ixheaacd_main.c
index baa490c..44f030c 100644
--- a/test/ixheaacd_main.c
+++ b/test/ixheaacd_main.c
@@ -60,7 +60,6 @@ extern ia_error_info_struct ixheaacd_error_info;
 #define IA_MAX_CMD_LINE_LENGTH 300
 #define IA_MAX_ARGS 20
 #define IA_SCREEN_WIDTH 80
-#define PARAMFILE "paramfilesimple.txt"
 
 /*****************************************************************************/
 /* Error codes for the testbench                                             */
@@ -99,8 +98,7 @@ WORD g_w_malloc_count;
 FILE *g_pf_out;
 FileWrapperPtr g_pf_inp; /* file pointer to bitstream file (mp4) */
 
-FILE *g_pf_interface;
-WORD32 interface_file_present = 0;
+WORD32 mpeg_d_drc_on = 0;
 
 metadata_info meta_info;  // metadata pointer;
 WORD32 ixheaacd_i_bytes_to_read;
@@ -595,15 +593,21 @@ IA_ERRORCODE ixheaacd_set_config_param(WORD32 argc, pWORD8 argv[],
           (*p_ia_process_api)(p_ia_process_api_obj, IA_API_CMD_SET_CONFIG_PARAM,
                               IA_ENHAACPLUS_DEC_DRC_EFFECT_TYPE, &ui_effect);
       _IA_HANDLE_ERROR(p_proc_err_info, (pWORD8) "", err_code);
+      mpeg_d_drc_on = 1;
     }
     /*For MPEG-D DRC target loudness*/
     if (!strncmp((pCHAR8)argv[i], "-target_loudness:", 17)) {
       pCHAR8 pb_arg_val = (pCHAR8)(argv[i] + 17);
       WORD32 ui_target_loudness = atoi(pb_arg_val);
+      if ((ui_target_loudness > 0) || (ui_target_loudness < -63)) {
+        ui_target_loudness = 0;
+      }
+      ui_target_loudness = -(ui_target_loudness << 2);
       err_code = (*p_ia_process_api)(
           p_ia_process_api_obj, IA_API_CMD_SET_CONFIG_PARAM,
           IA_ENHAACPLUS_DEC_DRC_TARGET_LOUDNESS, &ui_target_loudness);
       _IA_HANDLE_ERROR(p_proc_err_info, (pWORD8) "", err_code);
+      mpeg_d_drc_on = 1;
     }
     if (!strncmp((pCHAR8)argv[i], "-ld_testing:", 12)) {
       pCHAR8 pb_arg_val = (pCHAR8)(argv[i] + 12);
@@ -1262,7 +1266,7 @@ int ixheaacd_main_process(WORD32 argc, pWORD8 argv[]) {
 
   } while (!ui_init_done);
 
-  if (interface_file_present == 1) {
+  if (mpeg_d_drc_on == 1) {
     err_code =
         (*p_get_config_param)(pv_ia_process_api_obj, &i_samp_freq, &i_num_chan,
                               &i_pcm_wd_sz, &i_channel_mask);
@@ -1654,7 +1658,7 @@ int ixheaacd_main_process(WORD32 argc, pWORD8 argv[]) {
 
     _IA_HANDLE_ERROR(p_proc_err_info, (pWORD8) "", err_code);
 
-    if (interface_file_present == 1) {
+    if (mpeg_d_drc_on == 1) {
       if (ui_exec_done != 1) {
         VOID *p_array;        // ITTIAM:buffer to handle gain payload
         WORD32 buf_size = 0;  // ITTIAM:gain payload length
@@ -1977,366 +1981,109 @@ void print_usage() {
 /*******************************************************************************/
 
 int main(WORD32 argc, char *argv[]) {
-  FILE *param_file_id;
-
-  WORD8 curr_cmd[IA_MAX_CMD_LINE_LENGTH];
-  WORD32 fargc, curpos;
-  WORD32 processcmd = 0;
-
-  WORD8 fargv[IA_MAX_ARGS][IA_MAX_CMD_LINE_LENGTH];
-
-  pWORD8 pargv[IA_MAX_ARGS];
-
-  WORD8 pb_input_file_path[IA_MAX_CMD_LINE_LENGTH] = "";
-  WORD8 pb_output_file_path[IA_MAX_CMD_LINE_LENGTH] = "";
+  WORD32 i, err_code = IA_NO_ERROR;
 
   ia_testbench_error_handler_init();
 
-  if (argc == 1) {
-    param_file_id = fopen(PARAMFILE, "r");
-    if (param_file_id == NULL) {
-      print_usage();
-      return IA_NO_ERROR;
+  g_pf_inp = NULL;
+  g_pf_meta = NULL;
+  g_pf_out = NULL;
+
+  for (i = 1; i < argc; i++) {
+    printf("%s ", argv[i]);
+
+    if (!strncmp((const char *)argv[i], "-ifile:", 7)) {
+      pWORD8 pb_arg_val = (pWORD8)argv[i] + 7;
+
+      g_pf_inp = FileWrapper_Open((char *)pb_arg_val);
+      if (g_pf_inp == NULL) {
+        err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
+        ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
+                               (pWORD8) "Input File", err_code);
+        exit(1);
+      }
+      raw_testing = 0;
     }
 
-    /* Process one line at a time */
-    while (fgets((char *)curr_cmd, IA_MAX_CMD_LINE_LENGTH, param_file_id)) {
-      curpos = 0;
-      fargc = 0;
-      /* if it is not a param_file command and if */
-      /* CLP processing is not enabled */
-      if (curr_cmd[0] != '@' && !processcmd) { /* skip it */
-        continue;
+    if (!strncmp((const char *)argv[i], "-imeta:", 7)) {
+      pWORD8 pb_arg_val = (pWORD8)argv[i] + 7;
+
+      g_pf_meta = fopen((const char *)pb_arg_val, "r");
+
+      if (g_pf_meta == NULL) {
+        err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
+        ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
+                               (pWORD8) "Metadata File", err_code);
+        exit(1);
       }
 
-      while (sscanf((char *)curr_cmd + curpos, "%s", fargv[fargc]) != EOF) {
-        if (fargv[0][0] == '/' && fargv[0][1] == '/') break;
-        if (strcmp((const char *)fargv[0], "@echo") == 0) break;
-        if (strcmp((const char *)fargv[fargc], "@New_line") == 0) {
-          fgets((char *)curr_cmd + curpos, IA_MAX_CMD_LINE_LENGTH,
-                param_file_id);
-          continue;
-        }
-        curpos += strlen((const char *)fargv[fargc]);
-        while (*(curr_cmd + curpos) == ' ' || *(curr_cmd + curpos) == '\t')
-          curpos++;
-        fargc++;
+      err_code = ixheaacd_read_metadata_info(g_pf_meta, &meta_info);
+
+      if (err_code == -1) {
+        exit(1);
       }
-
-      if (fargc < 1) /* for blank lines etc. */
-        continue;
-
-      if (strcmp((const char *)fargv[0], "@Output_path") == 0) {
-        if (fargc > 1)
-          strcpy((char *)pb_output_file_path, (const char *)fargv[1]);
-        else
-          strcpy((char *)pb_output_file_path, "");
-        continue;
-      }
-
-      if (strcmp((const char *)fargv[0], "@Input_path") == 0) {
-        if (fargc > 1)
-          strcpy((char *)pb_input_file_path, (const char *)fargv[1]);
-        else
-          strcpy((char *)pb_input_file_path, "");
-        continue;
-      }
-
-      if (strcmp((const char *)fargv[0], "@Start") == 0) {
-        processcmd = 1;
-        continue;
-      }
-
-      if (strcmp((const char *)fargv[0], "@Stop") == 0) {
-        processcmd = 0;
-        continue;
-      }
-
-      /* otherwise if this a normal command and its enabled for execution */
-      if (processcmd) {
-        int i;
-        int err_code = IA_NO_ERROR;
-        int file_count = 0;
-
-        for (i = 0; i < fargc; i++) {
-          printf("%s ", fargv[i]);
-          pargv[i] = fargv[i];
-
-          if (!strncmp((const char *)fargv[i], "-ifile:", 7)) {
-            pWORD8 pb_arg_val = fargv[i] + 7;
-            WORD8 pb_input_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-            strcat((char *)pb_input_file_name,
-                   (const char *)pb_input_file_path);
-            strcat((char *)pb_input_file_name, (const char *)pb_arg_val);
-
-            g_pf_inp = NULL;
-            g_pf_inp = FileWrapper_Open((char *)pb_input_file_name);
-
-            if (g_pf_inp == NULL) {
-              err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-              ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                     (pWORD8) "Input File", err_code);
-              exit(1);
-            }
-            file_count++;
-            raw_testing = 0;
-          }
-
-          if (!strncmp((const char *)fargv[i], "-imeta:", 7)) {
-            pWORD8 pb_arg_val = fargv[i] + 7;
-            WORD8 pb_metadata_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-            strcat((char *)pb_metadata_file_name,
-                   (const char *)pb_input_file_path);
-            strcat((char *)pb_metadata_file_name, (const char *)pb_arg_val);
-
-            g_pf_meta = fopen((const char *)pb_metadata_file_name, "r");
-
-            if (g_pf_meta == NULL) {
-              err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-              ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                     (pWORD8) "Metadata File", err_code);
-              exit(1);
-            }
-
-            err_code = ixheaacd_read_metadata_info(g_pf_meta, &meta_info);
-
-            if (err_code == -1) exit(1);
-
-            raw_testing = 1;
-
-            file_count++;
-          }
-
-          if (!strncmp((const char *)fargv[i], "-ofile:", 7)) {
-            pWORD8 pb_arg_val = fargv[i] + 7;
-            WORD8 pb_output_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-            strcat((char *)pb_output_file_name,
-                   (const char *)pb_output_file_path);
-            strcat((char *)pb_output_file_name, (const char *)pb_arg_val);
-
-            g_pf_out = NULL;
-            g_pf_out = fopen((const char *)pb_output_file_name, "wb");
-            if (g_pf_out == NULL) {
-              err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-              ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                     (pWORD8) "Output File", err_code);
-              exit(1);
-            }
-            file_count++;
-          }
-          if (!strncmp((const char *)fargv[i], "-infile:", 8)) {
-            pWORD8 pb_arg_val = fargv[i] + 8;
-            WORD8 pb_interface_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-            strcat((char *)pb_interface_file_name,
-                   (const char *)pb_input_file_path);
-            strcat((char *)pb_interface_file_name, (const char *)pb_arg_val);
-
-            g_pf_interface = NULL;
-            g_pf_interface = fopen((const char *)pb_interface_file_name, "rb");
-
-            if (g_pf_interface == NULL) {
-              err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-              ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                     (pWORD8) "DRC Interface File", err_code);
-              exit(1);
-            }
-            interface_file_present = 1;
-            file_count++;
-          }
-        }
-        g_w_malloc_count = 0;
-
-        printf("\n");
-
-        if (file_count != 4 && file_count != 3 && file_count != 2) {
-          err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-          ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                 (pWORD8) "Input or Output File", err_code);
-        }
-
-        if (err_code == IA_NO_ERROR) {
-          if (g_pf_inp->isMp4File == 1) {
-            strcpy((pCHAR8)fargv[fargc], "-mp4:1");
-            pargv[fargc] = fargv[fargc];
-            fargc++;
-          }
-
-          for (i = 0; i < fargc; i++) {
-            if (strcmp((pCHAR8)fargv[i], "-eld_testing:1"))
-              eld_testing = 0;
-            else {
-              eld_testing = 1;
-              break;
-            }
-          }
-
-          ixheaacd_main_process(fargc, pargv);
-        }
-
-        for (i = 0; i < g_w_malloc_count; i++) {
-          if (g_pv_arr_alloc_memory[i]) free(g_pv_arr_alloc_memory[i]);
-        }
-        if (g_pf_out) fclose(g_pf_out);
-
-        if (g_pf_meta) {
-          raw_testing = 0;
-          fclose(g_pf_meta);
-          metadata_mp4_stsz_size_free(&meta_info);
-          g_pf_meta = NULL;
-        }
-        FileWrapper_Close(g_pf_inp);
-
-        if (g_pf_interface) {
-          fclose(g_pf_interface);
-          interface_file_present = 0;
-        }
-      }
-    }
-  } else {
-    int i;
-    int err_code = IA_NO_ERROR;
-    int file_count = 0;
-
-    for (i = 1; i < argc; i++) {
-      pargv[i] = fargv[i];
-      strcpy((pCHAR8)fargv[i], (pCHAR8)argv[i]);
-      printf("%s ", pargv[i]);
-
-      if (!strncmp((const char *)pargv[i], "-ifile:", 7)) {
-        pWORD8 pb_arg_val = pargv[i] + 7;
-        WORD8 pb_input_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-        err_code = IA_NO_ERROR;
-        strcat((char *)pb_input_file_name, (const char *)pb_input_file_path);
-        strcat((char *)pb_input_file_name, (const char *)pb_arg_val);
-
-        g_pf_inp = NULL;
-        g_pf_inp = FileWrapper_Open((char *)pb_input_file_name);
-        if (g_pf_inp == NULL) {
-          err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-          ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                 (pWORD8) "Input File", err_code);
-          exit(1);
-        }
-        file_count++;
-        raw_testing = 0;
-      }
-
-      if (!strncmp((const char *)fargv[i], "-imeta:", 7)) {
-        pWORD8 pb_arg_val = fargv[i] + 7;
-        WORD8 pb_metadata_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-        strcat((char *)pb_metadata_file_name, (const char *)pb_input_file_path);
-        strcat((char *)pb_metadata_file_name, (const char *)pb_arg_val);
-
-        g_pf_meta = NULL;
-        g_pf_meta = fopen((const char *)pb_metadata_file_name, "r");
-
-        if (g_pf_meta == NULL) {
-          err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-          ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                 (pWORD8) "Metadata File", err_code);
-          exit(1);
-        }
-
-        err_code = ixheaacd_read_metadata_info(g_pf_meta, &meta_info);
-
-        if (err_code == -1) {
-          exit(1);
-        }
-
-        raw_testing = 1;
-
-        file_count++;
-      }
-
-      if (!strncmp((const char *)pargv[i], "-ofile:", 7)) {
-        pWORD8 pb_arg_val = pargv[i] + 7;
-        WORD8 pb_output_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-        strcat((char *)pb_output_file_name, (const char *)pb_output_file_path);
-        strcat((char *)pb_output_file_name, (const char *)pb_arg_val);
-
-        g_pf_out = NULL;
-        g_pf_out = fopen((const char *)pb_output_file_name, "wb");
-        if (g_pf_out == NULL) {
-          err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-          ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                 (pWORD8) "Output File", err_code);
-          exit(1);
-        }
-        file_count++;
-      }
-
-      if (!strncmp((const char *)fargv[i], "-infile:", 8)) {
-        pWORD8 pb_arg_val = fargv[i] + 8;
-        WORD8 pb_interface_file_name[IA_MAX_CMD_LINE_LENGTH] = "";
-
-        strcat((char *)pb_interface_file_name,
-               (const char *)pb_input_file_path);
-        strcat((char *)pb_interface_file_name, (const char *)pb_arg_val);
-
-        g_pf_interface = NULL;
-        g_pf_interface = fopen((const char *)pb_interface_file_name, "rb");
-
-        if (g_pf_interface == NULL) {
-          err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-          ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                                 (pWORD8) "DRC Interface File", err_code);
-          exit(1);
-        }
-        interface_file_present = 1;
-        file_count++;
-      }
-    }
-    g_w_malloc_count = 0;
-
-    printf("\n");
-
-    if (file_count != 4 && file_count != 3 && file_count != 2) {
-      err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
-      ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
-                             (pWORD8) "Input or Output File", err_code);
+      raw_testing = 1;
     }
 
-    if (err_code == IA_NO_ERROR) {
-      if (g_pf_inp->isMp4File == 1) {
-        strcpy((pCHAR8)fargv[argc], "-mp4:1");
-        pargv[argc] = fargv[argc];
-        argc++;
+    if (!strncmp((const char *)argv[i], "-ofile:", 7)) {
+      pWORD8 pb_arg_val = (pWORD8)argv[i] + 7;
+
+      g_pf_out = fopen((const char *)pb_arg_val, "wb");
+      if (g_pf_out == NULL) {
+        err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
+        ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
+                               (pWORD8) "Output File", err_code);
+        exit(1);
       }
-
-      for (i = 0; i < argc; i++) {
-        if (strcmp((pCHAR8)fargv[i], "-eld_testing:1"))
-          eld_testing = 0;
-        else {
-          eld_testing = 1;
-          break;
-        }
-      }
-
-      ixheaacd_main_process(argc - 1, &pargv[1]);
-    }
-
-    for (i = 0; i < g_w_malloc_count; i++) {
-      if (g_pv_arr_alloc_memory[i]) free(g_pv_arr_alloc_memory[i]);
-    }
-    if (g_pf_out) fclose(g_pf_out);
-
-    if (g_pf_meta) {
-      fclose(g_pf_meta);
-      metadata_mp4_stsz_size_free(&meta_info);
-    }
-    FileWrapper_Close(g_pf_inp);
-    if (g_pf_interface) {
-      fclose(g_pf_interface);
-      interface_file_present = 0;
     }
   }
 
+  if ((g_pf_inp == NULL) || (g_pf_out == NULL)) {
+    print_usage();
+    err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
+    ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
+                           (pWORD8) "Input or Output File", err_code);
+    exit(1);
+  }
+
+  g_w_malloc_count = 0;
+
+  printf("\n");
+
+  for (i = 0; i < argc; i++) {
+    if (!strcmp((pCHAR8)argv[i], "-mp4:1")) {
+      if (g_pf_meta == NULL) {
+        print_usage();
+        err_code = IA_TESTBENCH_MFMAN_FATAL_FILE_OPEN_FAILED;
+        ixheaacd_error_handler(&ixheaacd_ia_testbench_error_info,
+                               (pWORD8) "Metadata File", err_code);
+        exit(1);
+      }
+    }
+  }
+
+  for (i = 0; i < argc; i++) {
+    if (strcmp((pCHAR8)argv[i], "-eld_testing:1"))
+      eld_testing = 0;
+    else {
+      eld_testing = 1;
+      break;
+    }
+  }
+
+  ixheaacd_main_process(argc - 1, (pWORD8 *)(&argv[1]));
+
+  for (i = 0; i < g_w_malloc_count; i++) {
+    if (g_pv_arr_alloc_memory[i]) free(g_pv_arr_alloc_memory[i]);
+  }
+  if (g_pf_out) fclose(g_pf_out);
+
+  if (g_pf_meta) {
+    fclose(g_pf_meta);
+    metadata_mp4_stsz_size_free(&meta_info);
+  }
+  FileWrapper_Close(g_pf_inp);
+  mpeg_d_drc_on = 0;
+
   return IA_NO_ERROR;
 } /* end ixheaacd_main */