added a WIN32 get_files_from_dir; turn off Photomakder if receiving no input images

stable-diffusion.cpp

@@ -1679,6 +1679,7 @@ sd_image_t* txt2img(sd_ctx_t* sd_ctx,
     // ggml_tensor* class_tokens_mask = NULL;
     std::vector<bool> class_tokens_mask;
     if(sd_ctx->sd->stacked_id){
+        if(input_id_images.size() > 0){
             sd_ctx->sd->pmid_model->style_strength = style_ratio;
             int32_t w = input_id_images[0]->width;
             int32_t h = input_id_images[0]->height;
@@ -1716,8 +1717,12 @@ sd_image_t* txt2img(sd_ctx_t* sd_ctx,
                 LOG_INFO("sampling steps increases from %d to 50 for PHOTOMAKER", sample_steps);
                 sample_steps  = 50;
             }
+        }else{
+            LOG_WARN("Provided PhotoMaker model file, but NO input ID images");
+            LOG_WARN("Turn off PhotoMaker");
+            sd_ctx->sd->stacked_id = false;
+        }
     }
-
 
 
     t0                            = ggml_time_ms();

util.cpp

@@ -91,6 +91,45 @@ std::string get_full_path(const std::string& dir, const std::string& filename) {
     }
 }
 
+std::vector<std::string> get_files_from_dir(const std::string& dir) {
+
+    std::vector<std::string> files;
+
+    WIN32_FIND_DATA findFileData;
+    HANDLE hFind;
+
+    char currentDirectory[MAX_PATH];
+    GetCurrentDirectory(MAX_PATH, currentDirectory);
+
+    char directoryPath[MAX_PATH]; // this is absolute path
+    sprintf(directoryPath, "%s\\%s\\*", currentDirectory, dir.c_str());
+
+    // Find the first file in the directory
+    hFind = FindFirstFile(directoryPath, &findFileData);
+
+    // Check if the directory was found
+    if (hFind == INVALID_HANDLE_VALUE) {
+        printf("Unable to find directory.\n");
+        return files;
+    }
+
+    // Loop through all files in the directory
+    do {
+        // Check if the found file is a regular file (not a directory)
+        if (!(findFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
+            files.push_back(std::string(currentDirectory) + "\\" + dir + "\\" + std::string(findFileData.cFileName));
+        }
+    } while (FindNextFile(hFind, &findFileData) != 0);
+
+    // Close the handle
+    FindClose(hFind);
+
+
+    sort(files.begin(), files.end());
+
+    return files;
+}
+
 #else  // Unix
 #include <dirent.h>
 #include <sys/stat.h>