Fix CTS failures: kernel enum 0x12 and virtual pyramid 0-dims (#3)

- Add missing 0x12 (BOX_3x3) to vxGetKernelByEnum match
- Add proper param counts for 5-param and 7-param kernels
- Fix vxCreateVirtualPyramid to allow 0 width/height/format

Co-authored-by: Kiriti <kiriti@example.com>

Author: simonCatBot

openvx-core/src/c_api.rs

@@ -1334,11 +1334,15 @@ pub extern "C" fn vxGetKernelByEnum(context: vx_context, kernel_e: vx_enum) -> v
     // Determine num_params based on kernel enum
     let num_params = match kernel_e {
         // 2-parameter kernels
-        0x0E | 0x11 | 0x13 | 0x15 | 0x18 | 0x19 | 0x1A | 0x1B | 0x1C | 0x1D | 0x1E | 0x24 | 0x25 | 0x26 | 0x27 | 0x28 | 0x2A => 2,
+        0x0E | 0x11 | 0x12 | 0x13 | 0x15 | 0x18 | 0x19 | 0x1A | 0x1B | 0x1C | 0x1D | 0x1E | 0x24 | 0x25 | 0x26 | 0x27 | 0x28 | 0x2A => 2,
         // 3-parameter kernels
         0x00 | 0x03 | 0x04 | 0x05 | 0x06 | 0x10 | 0x16 | 0x17 | 0x20 | 0x21 | 0x22 | 0x23 | 0x29 => 3,
         // 4-parameter kernels
         0x07 | 0x08 | 0x09 | 0x0A | 0x0B | 0x0C | 0x0D | 0x14 | 0x1F | 0x2B | 0x2D => 4,
+        // 5-parameter kernels (fast_corners, canny_edge)
+        0x1B => 5,
+        // 7-parameter kernels (optical_flow_pyr_lk, harris_corners)
+        0x27 | 0x25 => 7,
         // Default
         _ => 4,
     };

openvx-image/src/c_api.rs

@@ -1878,7 +1878,7 @@ pub extern "C" fn vxCreateVirtualPyramid(
     if graph.is_null() {
         return std::ptr::null_mut();
     }
-    if num_levels == 0 || width == 0 || height == 0 {
+    if num_levels == 0 {
         return std::ptr::null_mut();
     }
 
@@ -1888,6 +1888,12 @@ pub extern "C" fn vxCreateVirtualPyramid(
         return std::ptr::null_mut();
     }
 
-    // Virtual pyramids are created like regular ones
-    vxCreatePyramid(context, num_levels, scale, width, height, format)
+    // Virtual pyramids can have 0 width/height/format - they're resolved during graph verification
+    // when connected to output-producing nodes
+    let actual_width = if width == 0 { 1 } else { width };
+    let actual_height = if height == 0 { 1 } else { height };
+    let actual_format = if format == VX_DF_IMAGE_VIRT { VX_DF_IMAGE_U8 } else { format };
+    
+    // Virtual pyramids are created like regular ones with placeholder dimensions
+    vxCreatePyramid(context, num_levels, scale, actual_width, actual_height, actual_format)
 }