diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index 5645b8e9bf46fa6b5903314d7975da46e8f52d1f..074b6d8845ceb7c405735fba0914e1a3b2aa6330 100644
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -40,13 +40,20 @@
 #include "stat_enc.h"
 #include "stat_dec.h"
 #include "stat_com.h"
+#ifndef FIX_197_CREND_INTERFACE_LIB_REND_H
 #ifdef FIX_197_CREND_INTERFACE
 #include "ivas_stat_rend.h"
 #endif
+#endif
 #include "ivas_stat_enc.h"
 #include "ivas_stat_dec.h"
 #include "ivas_stat_com.h"
 #include "ivas_error_utils.h"
+#ifdef FIX_197_CREND_INTERFACE
+#ifndef FIX_197_CREND_INTERFACE_LIB_REND_H
+#include "lib_rend.h"
+#endif
+#endif
 
 /* clang-format off */
 
@@ -5421,8 +5428,9 @@ ivas_error ivas_crend_process(
     float output[][L_FRAME48k]                                  /* i/o: input/output audio channels             */
 );
 
-#else
+#else /* FIX_197_CREND_INTERFACE */
 
+#ifndef FIX_197_CREND_INTERFACE_LIB_REND_H
 IVAS_REND_AudioConfigType getAudioConfigType(
     const IVAS_REND_AudioConfig config );
 
@@ -5432,19 +5440,30 @@ ivas_error getAudioConfigNumChannels(
 
 IVAS_REND_AudioConfig getRendAudioConfigFromIvasAudioConfig(
     AUDIO_CONFIG config );
+#endif /* FIX_197_CREND_INTERFACE_LIB_REND_H */
 
 ivas_error ivas_rend_initCrend(
     CREND_WRAPPER *pCrend,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    const AUDIO_CONFIG inConfig,
+    const AUDIO_CONFIG outConfig,
+#else
     const IVAS_REND_AudioConfig inConfig,
     const IVAS_REND_AudioConfig outConfig,
+#endif    
     RENDER_CONFIG_DATA *hRendCfg,
     HRTFS_CREND_HANDLE hSetOfHRTF,
     const int32_t output_Fs );    
 
 ivas_error ivas_rend_openCrend(
     CREND_WRAPPER_HANDLE *pCrend,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    const AUDIO_CONFIG inConfig,
+    const AUDIO_CONFIG outConfig,
+#else
     const IVAS_REND_AudioConfig inConfig,
     const IVAS_REND_AudioConfig outConfig,
+#endif    
     RENDER_CONFIG_DATA *hRendCfg,
     int16_t Opt_Headrotation,
     HRTFS_CREND_HANDLE hSetOfHRTF,
@@ -5459,8 +5478,13 @@ ivas_error ivas_rend_closeCrend(
 
 ivas_error ivas_rend_crendProcess(
     const CREND_WRAPPER *pCrend,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H    
+    const AUDIO_CONFIG inConfig,
+    const AUDIO_CONFIG outConfig,
+#else
     const IVAS_REND_AudioConfig inConfig,
     const IVAS_REND_AudioConfig outConfig,
+#endif    
     DECODER_CONFIG_HANDLE hDecoderConfig,
     HEAD_TRACK_DATA_HANDLE hHeadTrackData,   
     IVAS_OUTPUT_SETUP_HANDLE hIntSetup, 
diff --git a/lib_com/options.h b/lib_com/options.h
index 93bf718c7e0fe2ff7240f0898afc88dcd83b25c6..8e397881cf4da5a2da520ca45e2b3c7860d32351 100755
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -150,6 +150,10 @@
 
 #define FIX_197_CREND_INTERFACE 
 
+#ifdef FIX_197_CREND_INTERFACE
+#define FIX_197_CREND_INTERFACE_LIB_REND_H
+#endif
+
 #define FIX_MEMORY_COUNTING_HRTF_BINARY_FILE
 #define FIX_334_DEBUG_BE_STEREO_SWITCHING               /* FhG: Fix non-BE issue for stereo switching when DEBUGGING is enabled */
 #define FIX_198_TDREND_INTERFACE                        /* Issue 198: Harmonize interface for TD renderer between decoder and external renderer */
diff --git a/lib_dec/ivas_dec.c b/lib_dec/ivas_dec.c
index 384baa0bb26482918c2e122394c771f8658c6294..e1337204908eba9f0fbc1ab05a5db068742aab03 100644
--- a/lib_dec/ivas_dec.c
+++ b/lib_dec/ivas_dec.c
@@ -209,8 +209,13 @@ ivas_error ivas_dec(
             {
 #ifdef FIX_197_CREND_INTERFACE
                 if ( ( error = ivas_rend_crendProcess( st_ivas->hCrendWrapper,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                                       AUDIO_CONFIG_7_1_4,
+                                                       AUDIO_CONFIG_BINAURAL_ROOM,
+#else
                                                        IVAS_REND_AUDIO_CONFIG_7_1_4,
                                                        IVAS_REND_AUDIO_CONFIG_BINAURAL_ROOM,
+#endif
                                                        NULL,
                                                        NULL,
                                                        NULL,
@@ -422,8 +427,14 @@ ivas_error ivas_dec(
             {
 #ifdef FIX_197_CREND_INTERFACE
                 if ( ( error = ivas_rend_crendProcess( st_ivas->hCrendWrapper,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                                       st_ivas->intern_config,
+                                                       st_ivas->hOutSetup.output_config,
+#else
                                                        getRendAudioConfigFromIvasAudioConfig( st_ivas->intern_config ),
                                                        getRendAudioConfigFromIvasAudioConfig( st_ivas->hOutSetup.output_config ),
+
+#endif
                                                        st_ivas->hDecoderConfig,
                                                        st_ivas->hHeadTrackData,
                                                        &st_ivas->hIntSetup,
diff --git a/lib_dec/ivas_init_dec.c b/lib_dec/ivas_init_dec.c
index dd094892e3694f5ef90b20e6fcbc74c4f03344f5..d9cb37f6ddcb287eb5a60e285c8b2d5703f1f27d 100644
--- a/lib_dec/ivas_init_dec.c
+++ b/lib_dec/ivas_init_dec.c
@@ -1249,8 +1249,13 @@ ivas_error ivas_init_decoder(
         }
 
         if ( ( error = ivas_rend_openCrend( &( st_ivas->hCrendWrapper ),
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                            st_ivas->intern_config,
+                                            st_ivas->hDecoderConfig->output_config,
+#else
                                             getRendAudioConfigFromIvasAudioConfig( st_ivas->intern_config ),
                                             getRendAudioConfigFromIvasAudioConfig( st_ivas->hDecoderConfig->output_config ),
+#endif
                                             st_ivas->hRenderConfig, st_ivas->hDecoderConfig->Opt_Headrotation,
                                             st_ivas->hSetOfHRTF,
                                             st_ivas->hDecoderConfig->output_Fs ) ) != IVAS_ERR_OK )
diff --git a/lib_dec/ivas_ism_param_dec.c b/lib_dec/ivas_ism_param_dec.c
index f2f008ff376d28c7ba1f4d0b3fa772df42a493b7..60121fcbae7c038ed310a4f70ad2a197bf1b2bd2 100644
--- a/lib_dec/ivas_ism_param_dec.c
+++ b/lib_dec/ivas_ism_param_dec.c
@@ -1087,8 +1087,13 @@ static ivas_error ivas_ism_bitrate_switching(
             /* Open Crend Binaural renderer */
 #ifdef FIX_197_CREND_INTERFACE
             if ( ( error = ivas_rend_openCrend( &( st_ivas->hCrendWrapper ),
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                                st_ivas->intern_config,
+                                                st_ivas->hOutSetup.output_config,
+#else
                                                 getRendAudioConfigFromIvasAudioConfig( st_ivas->intern_config ),
                                                 getRendAudioConfigFromIvasAudioConfig( st_ivas->hOutSetup.output_config ),
+#endif
                                                 st_ivas->hRenderConfig,
                                                 st_ivas->hDecoderConfig->Opt_Headrotation,
                                                 st_ivas->hSetOfHRTF,
diff --git a/lib_dec/ivas_mct_dec.c b/lib_dec/ivas_mct_dec.c
index 9c8e6407841d1cf2415f332ab4a5855c76797f82..72a2fcacbba49ccae7184561c310aa03b9b8642e 100644
--- a/lib_dec/ivas_mct_dec.c
+++ b/lib_dec/ivas_mct_dec.c
@@ -1158,8 +1158,13 @@ static ivas_error ivas_mc_dec_reconfig(
             else if ( st_ivas->hCrendWrapper == NULL && ( st_ivas->renderer_type == RENDERER_BINAURAL_MIXER_CONV || st_ivas->renderer_type == RENDERER_BINAURAL_MIXER_CONV_ROOM ) )
             {
                 if ( ( error = ivas_rend_openCrend( &( st_ivas->hCrendWrapper ),
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                                    st_ivas->intern_config,
+                                                    st_ivas->hDecoderConfig->output_config,
+#else
                                                     getRendAudioConfigFromIvasAudioConfig( st_ivas->intern_config ),
                                                     getRendAudioConfigFromIvasAudioConfig( st_ivas->hDecoderConfig->output_config ),
+#endif
                                                     st_ivas->hRenderConfig, st_ivas->hDecoderConfig->Opt_Headrotation,
                                                     st_ivas->hSetOfHRTF,
                                                     st_ivas->hDecoderConfig->output_Fs ) ) != IVAS_ERR_OK )
diff --git a/lib_dec/ivas_stat_dec.h b/lib_dec/ivas_stat_dec.h
index a78f747b6a3495be691f12e4beca64b5c0896792..d13849a60c45bfdf978ad4d43c1797818d1e6603 100755
--- a/lib_dec/ivas_stat_dec.h
+++ b/lib_dec/ivas_stat_dec.h
@@ -40,16 +40,13 @@
 #include "ivas_cnst.h"
 #include "ivas_stat_com.h"
 #include "ivas_stat_rend.h"
-#ifndef FIX_197_CREND_INTERFACE
 #include "common_api_types.h" // VE2AT: don't we want to avoid this include in the library? I admit that the rules hefre are not 100% clear to me but introducing it just for IVAS_QUATERNION is not necessry I think
-#endif
-
-#ifndef FIX_197_CREND_INTERFACE
-
 /*----------------------------------------------------------------------------------*
  * Output configuration for renderer (e.g. DirAC, MASA, Binaural Renderer...)
  *----------------------------------------------------------------------------------*/
 
+#if !defined FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H
+
 typedef struct ivas_output_setup_structure
 {
     AUDIO_CONFIG output_config;
@@ -828,7 +825,7 @@ typedef struct ivas_spar_md_dec_state_t
     int16_t spar_hoa_md_flag;
 } ivas_spar_md_dec_state_t;
 
-#ifndef FIX_197_CREND_INTERFACE
+#if !defined FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H
 
 /* AGC structure */
 typedef struct ivas_agc_dec_chan_state_t
@@ -868,7 +865,7 @@ typedef struct ivas_td_decorr_state_t
 
 } ivas_td_decorr_state_t;
 
-#endif
+#endif /* !defined FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H */
 
 /* PCA structure */
 typedef struct
@@ -1001,7 +998,7 @@ typedef struct mct_dec_data_structure
 
 } MCT_DEC_DATA, *MCT_DEC_HANDLE;
 
-#ifndef FIX_197_CREND_INTERFACE
+#if !defined FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H
 
 /*----------------------------------------------------------------------------------*
  * EFAP structures
@@ -1190,7 +1187,7 @@ typedef struct ivas_masa_decoder_struct
 
 } MASA_DECODER, *MASA_DECODER_HANDLE;
 
-#ifndef FIX_197_CREND_INTERFACE
+#if !defined FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H
 
 /*----------------------------------------------------------------------------------*
  * Binaural Rendering structure
@@ -1515,6 +1512,7 @@ typedef struct TDREND_HRFILT_FiltSet_struct
     ModelEval_t ModelEval;
     ModelParamsITD_t ModelParamsITD;
     TDREND_HRFILT_Method_t FilterMethod; /* HR filtering method */
+    float latency_s;
 
 } TDREND_HRFILT_FiltSet_t;
 
@@ -1822,6 +1820,20 @@ typedef struct ivas_hrtfs_file_header_t
 } ivas_hrtfs_file_header_t;
 
 
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+#ifdef FIX_197_CREND_INTERFACE
+
+/* Main Crend wrapper structure */
+typedef struct ivas_binaural_crend_wrapper_struct
+{
+    int32_t binaural_latency_ns;
+    CREND_HANDLE hCrend;
+    HRTFS_HANDLE hHrtfCrend;
+} CREND_WRAPPER, *CREND_WRAPPER_HANDLE;
+
+#endif /* FIX_197_CREND_INTERFACE */
+#endif /* FIX_197_CREND_INTERFACE_LIB_REND_H */
+
 /*----------------------------------------------------------------------------------*
  * LFE decoder structure
  *----------------------------------------------------------------------------------*/
@@ -1891,7 +1903,8 @@ typedef struct decoder_config_structure
 
 } DECODER_CONFIG, *DECODER_CONFIG_HANDLE;
 
-#endif
+#endif /* !defined  FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H */
+
 /*----------------------------------------------------------------------------------*
  *
  * Main IVAS decoder structure
diff --git a/lib_rend/ivas_crend.c b/lib_rend/ivas_crend.c
index f3ea41f08156d92ad28ddefe55f2640feb425742..2ddb2f642cbc282d91a26d9f9b8b0e8dc8652dec 100644
--- a/lib_rend/ivas_crend.c
+++ b/lib_rend/ivas_crend.c
@@ -36,9 +36,15 @@
 #include "ivas_prot.h"
 #include "ivas_cnst.h"
 #include "ivas_rom_rend.h"
+#ifndef FIX_197_CREND_INTERFACE_LIB_REND_H
 #include "ivas_stat_dec.h"
+#endif
 #include <math.h>
 #include "ivas_rom_binaural_crend_head.h"
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+#include "lib_rend.h"
+#include "ivas_lib_rend_internal.h"
+#else
 #ifdef FIX_197_CREND_INTERFACE
 #include "ivas_stat_rend.h"
 #include "lib_rend.h"
@@ -46,6 +52,7 @@
 #include "lib_rend.h"
 #include "ivas_lib_rend_internal.h"
 #endif
+#endif
 #ifdef DEBUGGING
 #include "debug.h"
 #endif
@@ -1456,8 +1463,13 @@ ivas_error ivas_crend_process(
 
 ivas_error ivas_rend_initCrend(
     CREND_WRAPPER *pCrend,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    const AUDIO_CONFIG inIvasConfig,
+    const AUDIO_CONFIG outIvasConfig,
+#else
     const IVAS_REND_AudioConfig inConfig,
     const IVAS_REND_AudioConfig outConfig,
+#endif
     RENDER_CONFIG_DATA *hRendCfg,
     HRTFS_CREND_HANDLE hSetOfHRTF,
     const int32_t output_Fs )
@@ -1468,8 +1480,15 @@ ivas_error ivas_rend_initCrend(
     IVAS_REND_AudioConfigType inConfigType;
     HRTFS_HANDLE hHrtf;
     ivas_error error;
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    IVAS_REND_AudioConfig inConfig;
+    IVAS_REND_AudioConfig outConfig;
 
+    inConfig = getRendAudioConfigFromIvasAudioConfig( inIvasConfig );
+    outConfig = getRendAudioConfigFromIvasAudioConfig( outIvasConfig );
+#endif
     inConfigType = getAudioConfigType( inConfig );
+
     hHrtf = pCrend->hHrtfCrend;
 
     /* Do all error checks up front so that the nested if later is easier */
@@ -1503,7 +1522,6 @@ ivas_error ivas_rend_initCrend(
     }
 #endif
 
-
     if ( ( error = getAudioConfigNumChannels( inConfig, &nchan_in ) ) != IVAS_ERR_OK )
     {
         return error;
@@ -1980,8 +1998,13 @@ ivas_error ivas_rend_openCrend(
 #else
     CREND_WRAPPER *pCrend,
 #endif
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    const AUDIO_CONFIG inConfig,
+    const AUDIO_CONFIG outConfig,
+#else
     const IVAS_REND_AudioConfig inConfig,
     const IVAS_REND_AudioConfig outConfig,
+#endif
     RENDER_CONFIG_DATA *hRendCfg,
 #ifdef FIX_197_CREND_INTERFACE
     int16_t Opt_Headrotation,
@@ -2156,7 +2179,11 @@ ivas_error ivas_rend_openCrend(
         if ( ( hRendCfg != NULL ) && ( hRendCfg->roomAcoustics.late_reverb_on ) )
         {
             if ( ( error = ivas_reverb_open( &( hCrend->hReverb ),
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                             inConfig,
+#else
                                              getIvasAudioConfigFromRendAudioConfig( inConfig ),
+#endif
 #ifdef FIX_197_CREND_INTERFACE
                                              ( *pCrend )->hHrtfCrend,
 #else
@@ -2508,8 +2535,13 @@ static ivas_error ivas_rend_crendConvolver(
 
 ivas_error ivas_rend_crendProcess(
     const CREND_WRAPPER *pCrend,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    const AUDIO_CONFIG inConfig,
+    const AUDIO_CONFIG outConfig,
+#else
     const IVAS_REND_AudioConfig inConfig,
     const IVAS_REND_AudioConfig outConfig,
+#endif
 #ifdef FIX_197_CREND_INTERFACE
     DECODER_CONFIG_HANDLE hDecoderConfig,
     HEAD_TRACK_DATA_HANDLE hHeadTrackData,
@@ -2529,12 +2561,24 @@ ivas_error ivas_rend_crendProcess(
     AUDIO_CONFIG in_config;
     IVAS_REND_AudioConfigType inConfigType;
     ivas_error error;
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    IVAS_REND_AudioConfig inRendConfig;
+    IVAS_REND_AudioConfig outRendConfig;
 
+    inRendConfig = getRendAudioConfigFromIvasAudioConfig( inConfig );
+    outRendConfig = getRendAudioConfigFromIvasAudioConfig( outConfig );
+#endif
     push_wmops( "ivas_rend_crendProcess" );
 
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    in_config = getIvasAudioConfigFromRendAudioConfig( inRendConfig );
+    inConfigType = getAudioConfigType( inRendConfig );
+    getAudioConfigNumChannels( outRendConfig, &nchan_out );
+#else
     in_config = getIvasAudioConfigFromRendAudioConfig( inConfig );
     inConfigType = getAudioConfigType( inConfig );
     getAudioConfigNumChannels( outConfig, &nchan_out );
+#endif
     output_frame = (int16_t) ( output_Fs / FRAMES_PER_SEC );
 #ifdef FIX_197_CREND_INTERFACE
     subframe_len = output_frame / MAX_PARAM_SPATIAL_SUBFRAMES;
@@ -2581,7 +2625,11 @@ ivas_error ivas_rend_crendProcess(
 
         if ( ( inConfigType == IVAS_REND_AUDIO_CONFIG_TYPE_CHANNEL_BASED ) || ( inConfigType == IVAS_REND_AUDIO_CONFIG_TYPE_AMBISONICS ) )
         {
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+            if ( ( error = ivas_rend_crendConvolver( pCrend, inRendConfig, outRendConfig, output, pcm_tmp, output_Fs, subframe_idx ) ) != IVAS_ERR_OK )
+#else
             if ( ( error = ivas_rend_crendConvolver( pCrend, inConfig, outConfig, output, pcm_tmp, output_Fs, subframe_idx ) ) != IVAS_ERR_OK )
+#endif
             {
                 return error;
             }
diff --git a/lib_rend/ivas_lib_rend_internal.h b/lib_rend/ivas_lib_rend_internal.h
index 60d6ed7b51694d234b9154b21f9e2fce31823b97..a4951fedd84ae1860bd79c401110d25bbc5dbee1 100644
--- a/lib_rend/ivas_lib_rend_internal.h
+++ b/lib_rend/ivas_lib_rend_internal.h
@@ -30,18 +30,30 @@
 
 *******************************************************************************************************/
 
+#ifndef IVAS_LIB_REND_INTERNALS_H
+#define IVAS_LIB_REND_INTERNALS_H
+
+#include "options.h"
 #include "ivas_error.h"
+
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+#include "lib_rend.h"
+#include "ivas_cnst.h"
+#include <stdint.h>
+#include "ivas_stat_dec.h"
+
+#else /* FIX_197_CREND_INTERFACE_LIB_REND_H */
+
 #ifdef FIX_197_CREND_INTERFACE
 #include "ivas_stat_rend.h"
-#else
+#else /* FIX_197_CREND_INTERFACE */
 #include "lib_rend.h"
-#endif
+#endif /* FIX_197_CREND_INTERFACE */
+
 #include "ivas_stat_dec.h"
 
-#ifndef IVAS_LIB_REND_INTERNALS_H
-#define IVAS_LIB_REND_INTERNALS_H
+#endif /* FIX_197_CREND_INTERFACE_LIB_REND_H */
 
-#ifndef FIX_197_CREND_INTERFACE
 typedef struct
 {
     int8_t headRotEnabled;
@@ -56,6 +68,8 @@ typedef struct
     TDREND_HRFILT_FiltSet_t *hHrtfTD;
 } TDREND_WRAPPER;
 
+#ifndef FIX_197_CREND_INTERFACE
+
 typedef struct
 {
     int32_t binaural_latency_ns;
@@ -63,6 +77,8 @@ typedef struct
     HRTFS_HANDLE hHrtfCrend;
 } CREND_WRAPPER;
 
+#endif
+
 IVAS_REND_AudioConfigType getAudioConfigType(
     const IVAS_REND_AudioConfig config );
 
@@ -70,9 +86,16 @@ ivas_error getAudioConfigNumChannels(
     const IVAS_REND_AudioConfig config,
     int16_t *numChannels );
 
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+IVAS_REND_AudioConfig getRendAudioConfigFromIvasAudioConfig(
+    AUDIO_CONFIG config );
+#endif
+
 AUDIO_CONFIG getIvasAudioConfigFromRendAudioConfig(
     IVAS_REND_AudioConfig config );
 
+#ifndef FIX_197_CREND_INTERFACE
+
 ivas_error ivas_rend_openCrend(
     CREND_WRAPPER *pCrend,
     const IVAS_REND_AudioConfig inConfig,
diff --git a/lib_rend/ivas_stat_rend.h b/lib_rend/ivas_stat_rend.h
index e57044930ec037e3743140f736e76639a17e67d5..fd3bcde641704e739ec53a77af740a9b09837a36 100644
--- a/lib_rend/ivas_stat_rend.h
+++ b/lib_rend/ivas_stat_rend.h
@@ -34,6 +34,76 @@
 #define IVAS_STAT_REND_H
 
 #include <stdint.h>
+#include "options.h"
+#include "ivas_cnst.h"
+
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+
+#define MAX_SPEAKERS 12 /* Max number of speakers (including LFE) in a channel-based config */
+
+/*----------------------------------------------------------------------------------*
+ * Loudspeaker Configuration Conversion structure
+ *----------------------------------------------------------------------------------*/
+
+typedef struct ivas_LS_setupconversion_struct
+{
+    float *dmxMtx[MAX_OUTPUT_CHANNELS];
+    float *targetEnergyPrev[MAX_OUTPUT_CHANNELS];
+    float *dmxEnergyPrev[MAX_OUTPUT_CHANNELS];
+    int16_t sfbOffset[MAX_SFB + 2];
+    int16_t sfbCnt;
+
+} LSSETUP_CONVERSION_STRUCT, *LSSETUP_CONVERSION_HANDLE;
+
+
+typedef struct ivas_LS_setupconversion_matrix
+{
+    int16_t index;
+    float value;
+} LS_CONVERSION_MATRIX;
+
+typedef struct ivas_LS_setupconversion_mapping
+{
+    AUDIO_CONFIG input_config;
+    AUDIO_CONFIG output_config;
+    const LS_CONVERSION_MATRIX *conversion_matrix;
+} LS_CONVERSION_MAPPING;
+
+typedef struct ivas_mono_downmix_renderer_struct
+{
+    float inputEnergy[CLDFB_NO_CHANNELS_MAX];
+    float protoEnergy[CLDFB_NO_CHANNELS_MAX];
+
+} MONO_DOWNMIX_RENDERER_STRUCT, *MONO_DOWNMIX_RENDERER_HANDLE;
+
+
+/*----------------------------------------------------------------------------------*
+ * Custom Loudspeaker configuration structure
+ *----------------------------------------------------------------------------------*/
+
+typedef struct ivas_LS_setup_custom
+{
+    int16_t is_planar_setup;                      /* flag to indicate if setup is planar or not                               */
+    int16_t num_spk;                              /* number of custom loudspeakers                                            */
+    float ls_azimuth[MAX_OUTPUT_CHANNELS];        /* custom loudspeaker azimuths                                              */
+    float ls_elevation[MAX_OUTPUT_CHANNELS];      /* custom loudspeaker elevations                                            */
+    int16_t num_lfe;                              /* number of LFE channels                                                   */
+    int16_t lfe_idx[MAX_OUTPUT_CHANNELS];         /* index for LFE channel insertion                                          */
+    int16_t separate_ch_found;                    /* flag to indicate if a center channel was found                           */
+    float separate_ch_gains[MAX_OUTPUT_CHANNELS]; /* gains to pan McMASA separateChannel in case no center channel is present */
+
+} LSSETUP_CUSTOM_STRUCT, *LSSETUP_CUSTOM_HANDLE;
+
+/* Channel types in a channel-based config */
+typedef enum
+{
+    CHANNEL_TYPE_UNUSED = 0,
+    CHANNEL_TYPE_SPEAKER,
+    CHANNEL_TYPE_LFE
+} ChannelType;
+
+#else
+
 #ifdef FIX_197_CREND_INTERFACE
 #include "cnst.h"
 #include "ivas_cnst.h"
@@ -139,6 +209,8 @@ typedef struct
     float lfeOutputGains[IVAS_MAX_INPUT_LFE_CHANNELS][IVAS_MAX_OUTPUT_CHANNELS];
 } IVAS_REND_LfeRouting;
 
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+
 typedef struct
 {
     int8_t headRotEnabled;
@@ -146,6 +218,7 @@ typedef struct
     float crossfade[L_FRAME48k / RENDERER_HEAD_POSITIONS_PER_FRAME];
 } IVAS_REND_HeadRotData;
 
+#endif
 /*----------------------------------------------------------------------------------*
  * Binaural Rendering structure
  *----------------------------------------------------------------------------------*/
@@ -1044,12 +1117,16 @@ typedef struct decoder_config_structure
 
 } DECODER_CONFIG, *DECODER_CONFIG_HANDLE;
 
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+
 typedef struct
 {
     int32_t binaural_latency_ns;
     BINAURAL_TD_OBJECT_RENDERER_HANDLE hBinRendererTd;
     TDREND_HRFILT_FiltSet_t *hHrtfTD;
 } TDREND_WRAPPER, *TDREND_WRAPPER_HANDLE;
+
+#endif
 #endif
 
 /*----------------------------------------------------------------------------------*
@@ -1113,4 +1190,6 @@ typedef enum
     CHANNEL_TYPE_LFE
 } ChannelType;
 
+#endif
+
 #endif /* IVAS_STAT_REND_H */
diff --git a/lib_rend/lib_rend.c b/lib_rend/lib_rend.c
index ed0039296446039c96b3e4b4ece03caaa99731e0..300130bcfe72f8f9e3702722a6d7587d3ce6e567 100644
--- a/lib_rend/lib_rend.c
+++ b/lib_rend/lib_rend.c
@@ -38,9 +38,6 @@
 #include "ivas_rom_dec.h"
 #include "ivas_rom_rend.h"
 #include "ivas_lib_rend_internal.h"
-#ifdef FIX_197_CREND_INTERFACE
-#include "lib_rend.h"
-#endif
 #include "prot.h"
 #include "wmc_auto.h"
 
@@ -1064,8 +1061,13 @@ static ivas_error setRendInputActiveIsm(
     else if ( outConfig == IVAS_REND_AUDIO_CONFIG_BINAURAL_ROOM )
     {
         error = ivas_rend_openCrend( &inputIsm->crendWrapper,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                     AUDIO_CONFIG_7_1_4,
+                                     getIvasAudioConfigFromRendAudioConfig( outConfig ),
+#else
                                      IVAS_REND_AUDIO_CONFIG_7_1_4,
                                      outConfig,
+#endif
                                      hRendCfg,
 #ifdef FIX_197_CREND_INTERFACE
                                      0,
@@ -1769,8 +1771,13 @@ static ivas_error initMcBinauralRendering(
 
     {
         if ( ( error = ivas_rend_openCrend( &inputMc->crendWrapper,
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                                            getIvasAudioConfigFromRendAudioConfig( ( inConfig == IVAS_REND_AUDIO_CONFIG_LS_CUSTOM ) ? IVAS_REND_AUDIO_CONFIG_7_1_4 : inConfig ),
+                                            getIvasAudioConfigFromRendAudioConfig( outConfig ),
+#else
                                             ( inConfig == IVAS_REND_AUDIO_CONFIG_LS_CUSTOM ) ? IVAS_REND_AUDIO_CONFIG_7_1_4 : inConfig,
                                             outConfig,
+#endif
                                             hRendCfg,
 #ifdef FIX_197_CREND_INTERFACE
                                             0,
@@ -2047,7 +2054,11 @@ static ivas_error updateSbaPanGains(
             {
                 case IVAS_REND_AUDIO_CONFIG_BINAURAL:
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                    error = ivas_rend_openCrend( &inputSba->crendWrapper, getIvasAudioConfigFromRendAudioConfig( inConfig ), getIvasAudioConfigFromRendAudioConfig( outConfig ), hRendCfg, 0,
+#else
                     error = ivas_rend_openCrend( &inputSba->crendWrapper, inConfig, outConfig, hRendCfg, 0,
+#endif
                                                  NULL,
                                                  *rendCtx.pOutSampleRate );
 #else
@@ -2062,7 +2073,11 @@ static ivas_error updateSbaPanGains(
                         return error;
                     }
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+                    error = ivas_rend_openCrend( &inputSba->crendWrapper, AUDIO_CONFIG_7_1_4, getIvasAudioConfigFromRendAudioConfig( outConfig ), hRendCfg, 0,
+#else
                     error = ivas_rend_openCrend( &inputSba->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, outConfig, hRendCfg, 0,
+#endif
                                                  NULL,
                                                  *rendCtx.pOutSampleRate );
 #else
@@ -4116,7 +4131,11 @@ static ivas_error renderIsmToBinauralRoom(
     copyBufferTo2dArray( tmpMcBuffer, tmpCrendBuffer );
 
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    ivas_rend_crendProcess( ismInput->crendWrapper, AUDIO_CONFIG_7_1_4, AUDIO_CONFIG_BINAURAL_ROOM, NULL, NULL, NULL, NULL, tmpCrendBuffer, *ismInput->base.ctx.pOutSampleRate );
+#else
     ivas_rend_crendProcess( ismInput->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, IVAS_REND_AUDIO_CONFIG_BINAURAL_ROOM, NULL, NULL, NULL, NULL, tmpCrendBuffer, *ismInput->base.ctx.pOutSampleRate );
+#endif
 #else
     ivas_rend_crendProcess( &ismInput->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, IVAS_REND_AUDIO_CONFIG_BINAURAL_ROOM, tmpCrendBuffer, *ismInput->base.ctx.pOutSampleRate );
 #endif
@@ -4422,7 +4441,11 @@ static ivas_error renderMcToBinaural(
 
         /* call CREND */
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+        if ( ( error = ivas_rend_crendProcess( mcInput->crendWrapper, getIvasAudioConfigFromRendAudioConfig( mcInput->base.inConfig ), getIvasAudioConfigFromRendAudioConfig( outConfig ), NULL, NULL, NULL, NULL, tmpRendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#else
         if ( ( error = ivas_rend_crendProcess( mcInput->crendWrapper, mcInput->base.inConfig, outConfig, NULL, NULL, NULL, NULL, tmpRendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#endif
 #else
         if ( ( error = ivas_rend_crendProcess( &mcInput->crendWrapper, mcInput->base.inConfig, outConfig, tmpRendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -4478,7 +4501,11 @@ static ivas_error renderMcToBinauralRoom(
 
     /* call CREND */
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    if ( ( error = ivas_rend_crendProcess( mcInput->crendWrapper, getIvasAudioConfigFromRendAudioConfig( mcInput->base.inConfig ), getIvasAudioConfigFromRendAudioConfig( outConfig ), NULL, NULL, NULL, NULL, tmpCrendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#else
     if ( ( error = ivas_rend_crendProcess( mcInput->crendWrapper, mcInput->base.inConfig, outConfig, NULL, NULL, NULL, NULL, tmpCrendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#endif
 #else
     if ( ( error = ivas_rend_crendProcess( &mcInput->crendWrapper, mcInput->base.inConfig, outConfig, tmpCrendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -4549,7 +4576,11 @@ static ivas_error renderMcCustomLsToBinauralRoom(
 
     /* call CREND */
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    if ( ( error = ivas_rend_crendProcess( mcInput->crendWrapper, AUDIO_CONFIG_7_1_4, getIvasAudioConfigFromRendAudioConfig( outConfig ), NULL, NULL, NULL, NULL, tmpCrendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#else
     if ( ( error = ivas_rend_crendProcess( mcInput->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, outConfig, NULL, NULL, NULL, NULL, tmpCrendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#endif
 #else
     if ( ( error = ivas_rend_crendProcess( &mcInput->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, outConfig, tmpCrendBuffer, *mcInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -4781,7 +4812,11 @@ static ivas_error renderSbaToBinaural(
 
     /* call CREND */
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    if ( ( error = ivas_rend_crendProcess( sbaInput->crendWrapper, getIvasAudioConfigFromRendAudioConfig( sbaInput->base.inConfig ), getIvasAudioConfigFromRendAudioConfig( outConfig ), NULL, NULL, NULL, NULL, tmpCrendBuffer, *sbaInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#else
     if ( ( error = ivas_rend_crendProcess( sbaInput->crendWrapper, sbaInput->base.inConfig, outConfig, NULL, NULL, NULL, NULL, tmpCrendBuffer, *sbaInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#endif
 #else
     if ( ( error = ivas_rend_crendProcess( &sbaInput->crendWrapper, sbaInput->base.inConfig, outConfig, tmpCrendBuffer, *sbaInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -4845,7 +4880,11 @@ static ivas_error renderSbaToBinauralRoom(
 
     /* call CREND */
 #ifdef FIX_197_CREND_INTERFACE
+#ifdef FIX_197_CREND_INTERFACE_LIB_REND_H
+    if ( ( error = ivas_rend_crendProcess( sbaInput->crendWrapper, AUDIO_CONFIG_7_1_4, getIvasAudioConfigFromRendAudioConfig( outConfig ), NULL, NULL, NULL, NULL, tmpCrendBuffer, *sbaInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#else
     if ( ( error = ivas_rend_crendProcess( sbaInput->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, outConfig, NULL, NULL, NULL, NULL, tmpCrendBuffer, *sbaInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
+#endif
 #else
     if ( ( error = ivas_rend_crendProcess( &sbaInput->crendWrapper, IVAS_REND_AUDIO_CONFIG_7_1_4, outConfig, tmpCrendBuffer, *sbaInput->base.ctx.pOutSampleRate ) ) != IVAS_ERR_OK )
 #endif
@@ -5251,23 +5290,3 @@ int32_t IVAS_REND_GetCntFramesLimited(
     return hIvasRend->hLimiter->cnt_frames_limited;
 }
 #endif
-
-#ifdef FIX_197_CREND_INTERFACE
-ivas_error ivas_rend_initEfap(
-    AUDIO_CONFIG outConfig,
-    EFAP_HANDLE *hEfap )
-{
-    ivas_error err;
-    IVAS_REND_AudioConfig audioCfg;
-    EFAP_WRAPPER wrap;
-    LSSETUP_CUSTOM_STRUCT customLsOut;
-    wrap.hEfap = NULL;
-    wrap.pCustomLsSetup = NULL;
-    audioCfg = getRendAudioConfigFromIvasAudioConfig( outConfig );
-    memset( &customLsOut, 0, sizeof( LSSETUP_CUSTOM_STRUCT ) );
-    err = initEfap( &wrap, audioCfg, &customLsOut );
-    *hEfap = wrap.hEfap;
-
-    return err;
-}
-#endif
diff --git a/lib_rend/lib_rend.h b/lib_rend/lib_rend.h
index b2ca45c70c5e877cc5d123d74b8baaf0af112b20..789b426070aa29ed24638ecf77f23458ea50ba73 100644
--- a/lib_rend/lib_rend.h
+++ b/lib_rend/lib_rend.h
@@ -40,7 +40,8 @@
 #include "options.h"
 #include "common_api_types.h"
 #include "ivas_error.h"
-#ifdef FIX_197_CREND_INTERFACE
+
+#if defined FIX_197_CREND_INTERFACE && !defined FIX_197_CREND_INTERFACE_LIB_REND_H
 #include "ivas_stat_rend.h"
 #endif
 
@@ -49,7 +50,7 @@
 #define RENDERER_MAX_SBA_INPUTS  1
 #define RENDERER_MAX_MASA_INPUTS 1
 
-#ifndef FIX_197_CREND_INTERFACE
+#if !defined FIX_197_CREND_INTERFACE || defined FIX_197_CREND_INTERFACE_LIB_REND_H
 
 #define RENDERER_HEAD_POSITIONS_PER_FRAME 4
 
@@ -139,12 +140,25 @@ typedef enum
 
 typedef uint16_t IVAS_REND_InputId;
 
+#endif
 
-#else
-
+#ifndef FIX_197_CREND_INTERFACE_LIB_REND_H
+#ifdef FIX_197_CREND_INTERFACE
 AUDIO_CONFIG getIvasAudioConfigFromRendAudioConfig(
     IVAS_REND_AudioConfig config );
 
+IVAS_REND_AudioConfig getRendAudioConfigFromIvasAudioConfig(
+    AUDIO_CONFIG config );
+#endif
+
+#ifdef FIX_197_CREND_INTERFACE
+IVAS_REND_AudioConfigType getAudioConfigType(
+    const IVAS_REND_AudioConfig config );
+
+ivas_error getAudioConfigNumChannels(
+    const IVAS_REND_AudioConfig config,
+    int16_t *numChannels );
+#endif
 #endif
 
 /* clang-format off */
@@ -291,12 +305,6 @@ int32_t IVAS_REND_GetCntFramesLimited(
 );
 #endif
 
-#ifdef FIX_197_CREND_INTERFACE
-ivas_error ivas_rend_initEfap(
-    AUDIO_CONFIG outConfig,
-    EFAP_HANDLE *hEfap
- );
-#endif
 /* clang-format on */
 
 #endif