mtmd: fix android build

tools/mtmd/mtmd-helper.cpp

@@ -640,6 +640,7 @@ bool mtmd_helper_support_video(mtmd_context * ctx) {
 #ifdef MTMD_VIDEO
     return mtmd_support_vision(ctx);
 #else
+    GGML_UNUSED(ctx);
     return false;
 #endif
 }
@@ -1007,6 +1008,9 @@ mtmd_helper_video * mtmd_helper_video_init(
 
     return ctx;
 #else
+    GGML_UNUSED(mctx);
+    GGML_UNUSED(path);
+    GGML_UNUSED(params);
     LOG_ERR("%s: video is not supported in this build (MTMD_VIDEO is set to OFF)\n", __func__);
     return nullptr;
 #endif
@@ -1039,6 +1043,10 @@ mtmd_helper_video * mtmd_helper_video_init_from_buf(
 
     return ctx;
 #else
+    GGML_UNUSED(mctx);
+    GGML_UNUSED(buf);
+    GGML_UNUSED(len);
+    GGML_UNUSED(params);
     LOG_ERR("%s: video is not supported in this build (MTMD_VIDEO is set to OFF)\n", __func__);
     return nullptr;
 #endif
@@ -1050,6 +1058,7 @@ void mtmd_helper_video_free(mtmd_helper_video * ctx) {
     ctx->stop_ffmpeg();
     delete ctx;
 #else
+    GGML_UNUSED(ctx);
     LOG_ERR("%s: video is not supported in this build (MTMD_VIDEO is set to OFF)\n", __func__);
 #endif
 }
@@ -1058,6 +1067,7 @@ mtmd_helper_video_info mtmd_helper_video_get_info(const mtmd_helper_video * ctx)
 #ifdef MTMD_VIDEO
     return ctx->info;
 #else
+    GGML_UNUSED(ctx);
     GGML_ASSERT(false && "video is not supported in this build (MTMD_VIDEO is set to OFF)");
 #endif
 }
@@ -1068,6 +1078,9 @@ int32_t mtmd_helper_video_read_next(mtmd_helper_video * ctx,
     if (!ctx) return -2;
     return ctx->read_next(out_bitmap, out_text);
 #else
+    GGML_UNUSED(ctx);
+    GGML_UNUSED(out_bitmap);
+    GGML_UNUSED(out_text);
     GGML_ASSERT(false && "video is not supported in this build (MTMD_VIDEO is set to OFF)");
 #endif
 }