From 040210591a5e90fc3e0ca0ec438426273e86c497 Mon Sep 17 00:00:00 2001
From: "yshuiv7@gmail.com" <Yuxuan Shui>
Date: Mon, 27 Apr 2026 15:30:10 +0100
Subject: [PATCH] abr: drop support for dynamic loading libldac

---
 abr/inc/ldacBT_abr.h |  2 +-
 abr/src/ldacBT_abr.c | 76 +-------------------------------------------
 2 files changed, 2 insertions(+), 76 deletions(-)

diff --git a/abr/inc/ldacBT_abr.h b/abr/inc/ldacBT_abr.h
index 294e230..735ea67 100644
--- a/abr/inc/ldacBT_abr.h
+++ b/abr/inc/ldacBT_abr.h
@@ -89,7 +89,7 @@ typedef struct _ldacbt_abr_param * HANDLE_LDAC_ABR;
  *  Return value
  *      HANDLE_LDAC_ABR for success, NULL for failure.
  */
-LDAC_ABR_API HANDLE_LDAC_ABR ldac_ABR_get_handle(const char *libpath);
+LDAC_ABR_API HANDLE_LDAC_ABR ldac_ABR_get_handle(void);
 
 /* Release of LDAC ABR handle.
  *  Format
diff --git a/abr/src/ldacBT_abr.c b/abr/src/ldacBT_abr.c
index 0af6278..fad2dd0 100644
--- a/abr/src/ldacBT_abr.c
+++ b/abr/src/ldacBT_abr.c
@@ -8,10 +8,6 @@
 
 #include <stdlib.h>
 #include <string.h>
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-#include <dlfcn.h>
-#include <errno.h>
-#endif
 
 #define LDAC_ABR_OBSERVING_TIME_MS 500   /* [ms] the time length for storing Tx Queue Depth */
 #define LDAC_ABR_PENALTY_MAX 4
@@ -56,18 +52,11 @@ typedef int (*tLDACBT_GET_ERR)(HANDLE_LDAC_BT hLdacBt);
 
 typedef struct _ldacbt_api_param
 {
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-    const char *lib_name;
-    void *lib_handle;
-#endif
     tLDACBT_ALTER_EQMID_PRIORITY alter_eqmid_priority;
     tLDACBT_GET_EQMID            get_eqmid;
     tLDACBT_GET_ERR              get_error_code;
 } LDACBT_API_PARAMS, * HANDLE_LDACBT_API;
 
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-static int open_lib(HANDLE_LDACBT_API hLdacBtApi, const char *lib_name );
-#endif
 
 static int load_ldacbt_api_functions(HANDLE_LDACBT_API hLdacBtApi);
 
@@ -122,7 +111,7 @@ static const int sizeOfEqmidToBitrateSortedIdTable = (int)(sizeof(aEqmidToAbrQua
                                                      / sizeof(aEqmidToAbrQualityModeID[0]));
 
 /* Get LDAC ABR handle */
-HANDLE_LDAC_ABR ldac_ABR_get_handle(const char *libpath)
+HANDLE_LDAC_ABR ldac_ABR_get_handle(void)
 {
     HANDLE_LDAC_ABR hLdacAbr;
     ABRDBG( "" );
@@ -131,15 +120,6 @@ HANDLE_LDAC_ABR ldac_ABR_get_handle(const char *libpath)
         return NULL;
     }
     clear_data( hLdacAbr, sizeof(LDAC_ABR_PARAMS) );
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-    if (libpath != NULL) {
-        if (open_lib( &hLdacAbr->ldacBtApi, libpath ) < 0) {
-            ABRDBG( "[ERR] Failed to open shared library \"%s\".", libpath );
-            ldac_ABR_free_handle(hLdacAbr);
-            return NULL;
-        }
-    }
-#endif
     if( load_ldacbt_api_functions(&hLdacAbr->ldacBtApi) != 0 ){
         ldac_ABR_free_handle(hLdacAbr);
         return NULL;
@@ -156,12 +136,6 @@ void ldac_ABR_free_handle(HANDLE_LDAC_ABR hLdacAbr)
         if (hLdacAbr->TxQD_Info.pHist){
             free(hLdacAbr->TxQD_Info.pHist);
         }
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-        if (hLdacAbr->ldacBtApi.lib_handle != NULL) {
-            dlclose(hLdacAbr->ldacBtApi.lib_handle);
-            hLdacAbr->ldacBtApi.lib_handle = NULL;
-        }
-#endif
         free(hLdacAbr);
     }
 }
@@ -408,65 +382,17 @@ int ldac_ABR_Proc( HANDLE_LDAC_BT hLDAC, HANDLE_LDAC_ABR hLdacAbr,
 }
 
 
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-static void *load_func(void *lib_handle, const char* func_name)
-{
-    void *func_ptr = dlsym(lib_handle, func_name);
-    if(func_ptr == NULL){
-        ABRDBG("[ERR] cannot find function '%s' in the library.\n", func_name);
-        return NULL;
-    }
-    return func_ptr;
-}
-
-static int open_lib(HANDLE_LDACBT_API hLdacBtApi, const char *lib_name )
-{
-    if( hLdacBtApi == NULL ){
-        ABRDBG("[ERR] handle is NULL");
-        return -1;
-    }
-    if( lib_name == NULL ){
-        ABRDBG("[ERR] lib_name is NULL");
-        return -1;
-    }
-    // open library
-    hLdacBtApi->lib_handle = dlopen(lib_name, RTLD_NOW);
-    if(hLdacBtApi->lib_handle == NULL){
-#ifdef LOCAL_DEBUG
-        char buffer_str[1024];
-        strerror_r(errno, buffer_str, sizeof(buffer_str));
-        ABRDBG("[ERR] cannot open library '%s': errno = %d (%s)\n",
-                lib_name, errno, buffer_str);
-#endif
-        return -1;
-    }
-    return 0;
-}
-#endif /* LDAC_ABR_DYNAMIC_LINK_LDAC_API */
-
 // Load functions
 static int load_ldacbt_api_functions(HANDLE_LDACBT_API hLdacBtApi)
 {
     hLdacBtApi->alter_eqmid_priority =
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-      load_func(hLdacBtApi->lib_handle, "ldacBT_alter_eqmid_priority");
-#else
       ldacBT_alter_eqmid_priority;
-#endif
 
     hLdacBtApi->get_eqmid =
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-      load_func(hLdacBtApi->lib_handle, "ldacBT_get_eqmid");
-#else
       ldacBT_get_eqmid;
-#endif
 
     hLdacBtApi->get_error_code =
-#ifdef LDAC_ABR_DYNAMIC_LINK_LDAC_API
-      load_func(hLdacBtApi->lib_handle, "ldacBT_get_error_code");
-#else
       ldacBT_get_error_code;
-#endif
 
     if( (hLdacBtApi->alter_eqmid_priority == NULL) ||
         (hLdacBtApi->get_eqmid == NULL) ||
-- 
2.53.0