Modification based on comments:

- Update some doc
- Change field setting name
- Remove un-needed code
- Suppress compile warning

aconfigure

@@ -10157,7 +10157,7 @@ else $as_nop
    		  if test "x$with_lyra" != "xno" -a "x$with_lyra" != "x"; then
 	      		LYRA_PREFIX=$with_lyra
                   		      		LYRA_CPPFLAGS="-DGLOG_DEPRECATED=__attribute__((deprecated)) -DGLOG_EXPORT=__attribute__((visibility(\"default\"))) -DGLOG_NO_EXPORT=__attribute__((visibility(\"default\")))"
-	      		LYRA_CXXFLAGS="-std=c++17 -I$LYRA_PREFIX/include/com_google_absl -I$LYRA_PREFIX/include/gulrak_filesystem -I$LYRA_PREFIX/include/com_google_glog/src -I$LYRA_PREFIX"
+	      		LYRA_CXXFLAGS="-std=c++17 -Wno-deprecated-builtins -I$LYRA_PREFIX/include/com_google_absl -I$LYRA_PREFIX/include/gulrak_filesystem -I$LYRA_PREFIX/include/com_google_glog/src -I$LYRA_PREFIX"
 	                LYRA_LDFLAGS="-L$LYRA_PREFIX/lib"
 	      		{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: Using lyra prefix... $with_lyra" >&5
 printf "%s\n" "Using lyra prefix... $with_lyra" >&6; }

aconfigure.ac

@@ -2342,7 +2342,7 @@ AC_ARG_ENABLE(lyra,
 	      		LYRA_PREFIX=$with_lyra
                   	dnl # inside autoconf, single quoted preprocessor definition will raise error
 	      		LYRA_CPPFLAGS="-DGLOG_DEPRECATED=__attribute__((deprecated)) -DGLOG_EXPORT=__attribute__((visibility(\"default\"))) -DGLOG_NO_EXPORT=__attribute__((visibility(\"default\")))"
-	      		LYRA_CXXFLAGS="-std=c++17 -I$LYRA_PREFIX/include/com_google_absl -I$LYRA_PREFIX/include/gulrak_filesystem -I$LYRA_PREFIX/include/com_google_glog/src -I$LYRA_PREFIX"
+	      		LYRA_CXXFLAGS="-std=c++17 -Wno-deprecated-builtins -I$LYRA_PREFIX/include/com_google_absl -I$LYRA_PREFIX/include/gulrak_filesystem -I$LYRA_PREFIX/include/com_google_glog/src -I$LYRA_PREFIX"
 	                LYRA_LDFLAGS="-L$LYRA_PREFIX/lib"
 	      		AC_MSG_RESULT([Using lyra prefix... $with_lyra])
 	      	  else

pjmedia/include/pjmedia-codec/lyra.h

@@ -44,8 +44,26 @@ PJ_BEGIN_DECL
  */
 typedef struct pjmedia_codec_lyra_config
 {
-    unsigned    bit_rate;    /**< The expected bit rate from remote.     */
-    pj_str_t    model_path;  /**< The path to the model files.           */
+    /**
+     * The value represents the decoder bitrate requested by the receiver.
+     * Endpoints can be configured with different bitrates. For example,
+     * the local endpoint might be set to a bitrate of 3200, while
+     * the remote endpoint is set to 6000. In this scenario, the remote
+     * endpoint will send data at 3200 bitrate, while the local endpoint
+     * will send data at 6000 bitrate.
+     */
+    unsigned    bit_rate;
+
+    /**
+     * Lyra required some additional (model) files, including
+     * \b lyra_config.binarypb , \b lyragan.tflite , \b quantizer.tflite and
+     * \b soundstream_encoder.tflite .
+     * This setting represents the folder containing the above files.
+     * The specified folder should contain these files. If an invalid folder
+     * is provided, the codec creation will fail.
+     */
+    pj_str_t    model_path;
+
 } pjmedia_codec_lyra_config;
 
 /**

pjmedia/include/pjmedia-codec/types.h

@@ -83,10 +83,10 @@ enum pjmedia_audio_pt
     PJMEDIA_RTP_PT_G7221_RSV1,                  /**< G722.1 reserve         */
     PJMEDIA_RTP_PT_G7221_RSV2,                  /**< G722.1 reserve         */
     PJMEDIA_RTP_PT_OPUS,                        /**< OPUS                   */
-    PJMEDIA_RTP_PT_LYRA_8,                      /**< LYRA @ 8Kbps           */
-    PJMEDIA_RTP_PT_LYRA_16,                     /**< LYRA @ 16Kbps          */
-    PJMEDIA_RTP_PT_LYRA_32,                     /**< LYRA @ 32Kbps          */
-    PJMEDIA_RTP_PT_LYRA_48,                     /**< LYRA @ 48Kbps          */
+    PJMEDIA_RTP_PT_LYRA_8,                      /**< LYRA @ 8KHz            */
+    PJMEDIA_RTP_PT_LYRA_16,                     /**< LYRA @ 16KHz           */
+    PJMEDIA_RTP_PT_LYRA_32,                     /**< LYRA @ 32KHz           */
+    PJMEDIA_RTP_PT_LYRA_48,                     /**< LYRA @ 48KHz           */
 #if PJMEDIA_CODEC_L16_HAS_8KHZ_MONO
     PJMEDIA_RTP_PT_L16_8KHZ_MONO,               /**< L16 @ 8KHz, mono       */
 #endif

pjmedia/src/pjmedia-codec/lyra.cpp

@@ -673,8 +673,6 @@ static pj_status_t lyra_codec_recover(pjmedia_codec *codec,
     unsigned samples_per_frame = lyra_data->samples_per_frame;
     pj_status_t status;
 
-    //PJ_LOG(4, (THIS_FILE, "Codec recover"));
-
     /* output_buf_len is unreferenced when building in Release mode */
     PJ_UNUSED_ARG(output_buf_len);
 

pjsip/include/pjsua2/media.hpp

@@ -2646,8 +2646,25 @@ struct CodecOpusConfig
  */
 struct CodecLyraConfig
 {
-    unsigned   bit_rate;    /**< The expected bit rate from remote.     */
-    string     model_path;  /**< The path to the model files.           */
+    /**
+     * The value represents the decoder bitrate requested by the receiver.
+     * Endpoints can be configured with different bitrates. For example,
+     * the local endpoint might be set to a bitrate of 3200, while
+     * the remote endpoint is set to 6000. In this scenario, the remote
+     * endpoint will send data at 3200 bitrate, while the local endpoint
+     * will send data at 6000 bitrate.
+     */
+    unsigned   bitRate;
+
+    /**
+     * Lyra required some additional (model) files, including
+     * \b lyra_config.binarypb , \b lyragan.tflite , \b quantizer.tflite and
+     * \b soundstream_encoder.tflite .
+     * This setting represents the folder containing the above files.
+     * The specified folder should contain these files. If an invalid folder
+     * is provided, the codec creation will fail.
+     */
+    string     modelPath;
 
     pjmedia_codec_lyra_config toPj() const;
     void fromPj(const pjmedia_codec_lyra_config &config);

pjsip/src/pjsua2/media.cpp

@@ -305,15 +305,15 @@ static pj_status_t get_frame(pjmedia_port *port, pjmedia_frame *frame)
     mport->onFrameRequested(frame_);
     frame->type = frame_.type;
     frame->size = PJ_MIN(frame_.buf.size(), frame_.size);
-
-#if ((defined(_MSVC_LANG) && _MSVC_LANG <= 199711L) || __cplusplus <= 199711L)
-    /* C++98 does not have Vector::data() */
-    if (frame->size > 0)
+
+#if ((defined(_MSVC_LANG) && _MSVC_LANG <= 199711L) || __cplusplus <= 199711L)
+    /* C++98 does not have Vector::data() */
+    if (frame->size > 0)
         pj_memcpy(frame->buf, &frame_.buf[0], frame->size);
 #else
-    /* Newer than C++98 */
+    /* Newer than C++98 */
     pj_memcpy(frame->buf, frame_.buf.data(), frame->size);
-#endif
+#endif
 
 
     return PJ_SUCCESS;
@@ -2036,16 +2036,16 @@ pjmedia_codec_lyra_config CodecLyraConfig::toPj() const
 {
     pjmedia_codec_lyra_config config;
 
-    config.bit_rate = bit_rate;
-    config.model_path = str2Pj(model_path);
+    config.bit_rate = bitRate;
+    config.model_path = str2Pj(modelPath);
 
     return config;
 }
 
 void CodecLyraConfig::fromPj(const pjmedia_codec_lyra_config &config)
 {
-    bit_rate = config.bit_rate;
-    model_path = pj2Str(config.model_path);
+    bitRate = config.bit_rate;
+    modelPath = pj2Str(config.model_path);
 }
 
 ///////////////////////////////////////////////////////////////////////////////