cv diff with scale

gistfile1.diff

diff --git a/src/mod/applications/mod_cv/mod_cv.cpp b/src/mod/applications/mod_cv/mod_cv.cpp
index faee56f..f12ad00 100644
--- a/src/mod/applications/mod_cv/mod_cv.cpp
+++ b/src/mod/applications/mod_cv/mod_cv.cpp
@@ -96,7 +96,7 @@ typedef struct cv_context_s {
     struct detect_stats nestDetected;
     int detect_event;
     int nest_detect_event;
-    switch_png_t *png;
+    switch_image_t *png;
     struct shape shape[MAX_SHAPES];
     int shapeidx;
     int x_off;
@@ -121,7 +121,7 @@ static void uninit_context(cv_context_t *context)
     }
 
     if (context->png) {
-        switch_png_free(&context->png);
+        switch_img_free(&context->png);
     }
 }
 
@@ -137,7 +137,8 @@ static void init_context(cv_context_t *context, const char *cascade_name, const
 
         if (nested_cascade_name) {
             if (switch_stristr(".png", nested_cascade_name)) {
-                switch_png_open(&context->png, nested_cascade_name);
+                // switch_png_open(&context->png, nested_cascade_name);
+                context->png = switch_img_read_png(nested_cascade_name, SWITCH_IMG_FMT_ARGB);
                 context->x_off = x_off;
                 context->y_off = y_off;
             } else {
@@ -609,11 +610,15 @@ static switch_status_t video_thread_callback(switch_core_session_t *session, swi
 
         if (context->png && context->detect_event && context->shape[0].cx) {
             int x = 0, y = 0;
+            switch_image_t *img = NULL;
 
-            x = context->shape[0].cx - (context->png->w / 2) + context->x_off;
-            y = context->shape[0].cy - (context->png->h / 2) + context->y_off;
+            x = context->shape[0].cx - (context->png->d_w / 4) + context->x_off;
+            y = context->shape[0].cy - (context->png->d_h / 4) + context->y_off;
 
-            switch_png_patch_img(context->png, frame->img, x, y);
+            switch_img_scale(context->png, &img, context->png->d_w/2, context->png->d_h/2);
+            switch_img_patch(frame->img, img, x, y);
+            switch_img_free(&img);
+            // switch_png_patch_img(context->png, frame->img, x, y);
         } else {
             libyuv::RGB24ToI420((uint8_t *)context->rawImage->imageData, w * 3,
                                 frame->img->planes[0], frame->img->stride[0],