llava: add more helper functions to check projector types in clip context (ggml-org#12824)

Signed-off-by: dm4 <sunrisedm4@gmail.com>

Author: dm4

examples/llava/clip.cpp

@@ -2840,10 +2840,19 @@ int clip_is_minicpmv(const struct clip_ctx * ctx) {
 bool clip_is_glm(const struct clip_ctx * ctx) {
     return ctx->has_glm_projector;
 }
+
 bool clip_is_qwen2vl(const struct clip_ctx * ctx) {
     return ctx->has_qwen2vl_merger;
 }
 
+bool clip_is_llava(const struct clip_ctx * ctx) {
+    return ctx->has_llava_projector;
+}
+
+bool clip_is_gemma3(const struct clip_ctx * ctx) {
+    return ctx->proj_type == PROJECTOR_TYPE_GEMMA3;
+}
+
 // Determine the number of encoder layers to iterate over
 int get_deepest_feature_layer(const struct clip_ctx * ctx) {
     // Get the index of the second to last layer; this is the

examples/llava/clip.h

@@ -106,6 +106,8 @@ CLIP_API bool clip_model_quantize(const char * fname_inp, const char * fname_out
 CLIP_API int clip_is_minicpmv(const struct clip_ctx * ctx);
 CLIP_API bool clip_is_glm(const struct clip_ctx * ctx);
 CLIP_API bool clip_is_qwen2vl(const struct clip_ctx * ctx);
+CLIP_API bool clip_is_llava(const struct clip_ctx * ctx);
+CLIP_API bool clip_is_gemma3(const struct clip_ctx * ctx);
 
 CLIP_API int get_deepest_feature_layer(const struct clip_ctx * ctx);