whisper : log lang_id to troubleshoot language detection

Author: danbev

src/whisper.cpp

@@ -3989,6 +3989,7 @@ int whisper_lang_max_id(void) {
 }
 
 int whisper_lang_id(const char * lang) {
+    WHISPER_LOG_INFO("%s: [danbev] lang '%s'\n", __func__, lang);
     if (!g_lang.count(lang)) {
         for (const auto & kv : g_lang) {
             if (kv.second.second == lang) {
@@ -5502,6 +5503,7 @@ int whisper_full_with_state(
         std::vector<float> probs(whisper_lang_max_id() + 1, 0.0f);
 
         const auto lang_id = whisper_lang_auto_detect_with_state(ctx, state, 0, params.n_threads, probs.data());
+        WHISPER_LOG_INFO("%s: [danbev] lang_id: %d\n", __func__, lang_id);
         if (lang_id < 0) {
             WHISPER_LOG_ERROR("%s: failed to auto-detect language\n", __func__);
             return -3;