Applied change to copy constructor suggested by absadiki and tested on Framework laptop with and without Vulkan support

Author: Dennis Parker

src/main.cpp

@@ -295,7 +295,7 @@ int whisper_ctx_init_openvino_encoder_wrapper(struct whisper_context_wrapper * c
                     const char * cache_dir){
     return whisper_ctx_init_openvino_encoder(ctx->ptr, model_path, device, cache_dir);
 }
-
+/*
 class WhisperFullParamsWrapper : public whisper_full_params {
     std::string initial_prompt_str;   
     std::string suppress_regex_str;      
@@ -338,6 +338,66 @@ class WhisperFullParamsWrapper : public whisper_full_params {
     }
 };
 
+*/
+struct WhisperFullParamsWrapper : public whisper_full_params {
+  std::string initial_prompt_str;
+  std::string suppress_regex_str;
+public:
+  py::function py_progress_callback;
+  WhisperFullParamsWrapper(const whisper_full_params& params = whisper_full_params())
+    : whisper_full_params(params),
+      initial_prompt_str(params.initial_prompt ? params.initial_prompt : ""),
+      suppress_regex_str(params.suppress_regex ? params.suppress_regex : "") {
+    initial_prompt = initial_prompt_str.empty() ? nullptr : initial_prompt_str.c_str();
+    suppress_regex = suppress_regex_str.empty() ? nullptr : suppress_regex_str.c_str();
+    // progress callback
+    progress_callback_user_data = this;
+    progress_callback = [](struct whisper_context* ctx, struct whisper_state* state, int progress, void* user_data) {
+      auto* self = static_cast<WhisperFullParamsWrapper*>(user_data);
+      if(self && self->print_progress){
+        if (self->py_progress_callback) {
+          // call the python callback
+          py::gil_scoped_acquire gil;
+          self->py_progress_callback(progress);  // Call Python callback
+        }
+        else {
+          fprintf(stderr, "Progress: %3d%%\n", progress);
+        } // Default message
+      }
+    } ;
+  }
+  WhisperFullParamsWrapper(const WhisperFullParamsWrapper& other)
+    : whisper_full_params(static_cast<whisper_full_params>(other)),  // Copy base struct
+      initial_prompt_str(other.initial_prompt_str),
+      suppress_regex_str(other.suppress_regex_str),
+      py_progress_callback(other.py_progress_callback) {
+    // Reset pointers to new string copies
+    initial_prompt = initial_prompt_str.empty() ? nullptr : initial_prompt_str.c_str();
+    suppress_regex = suppress_regex_str.empty() ? nullptr : suppress_regex_str.c_str();
+    progress_callback_user_data = this;
+    progress_callback = [](struct whisper_context* ctx, struct whisper_state* state, int progress, void* user_data) {
+      auto* self = static_cast<WhisperFullParamsWrapper*>(user_data);
+      if(self && self->print_progress){
+        if (self->py_progress_callback) {
+          // call the python callback
+          py::gil_scoped_acquire gil;
+          self->py_progress_callback(progress);  // Call Python callback
+        }
+        else {
+          fprintf(stderr, "Progress: %3d%%\n", progress);
+        } // Default message
+      }
+    };
+  }
+  void set_initial_prompt(const std::string& prompt) {
+    initial_prompt_str = prompt;
+    initial_prompt = initial_prompt_str.c_str();
+  }
+  void set_suppress_regex(const std::string& regex) {
+    suppress_regex_str = regex;
+    suppress_regex = suppress_regex_str.c_str();
+  }
+};
 WhisperFullParamsWrapper  whisper_full_default_params_wrapper(enum whisper_sampling_strategy strategy) {
     return WhisperFullParamsWrapper(whisper_full_default_params(strategy));
 }