FS-10050: [core] chromakey Optimizations broke solid color mode

src/include/switch_core_video.h

@@ -314,6 +314,8 @@ SWITCH_DECLARE(switch_image_t *) switch_img_copy_rect(switch_image_t *img, uint3
 */
 SWITCH_DECLARE(void) switch_img_fill(switch_image_t *img, int x, int y, int w, int h, switch_rgb_color_t *color);
 
+SWITCH_DECLARE(void) switch_img_fill_noalpha(switch_image_t *img, int x, int y, int w, int h, switch_rgb_color_t *color);
+
 /*!\brief Set RGB color with a string
 *
 * Color string should be in #RRGGBB format

src/mod/applications/mod_video_filter/mod_video_filter.c

@@ -358,7 +358,7 @@ static switch_status_t video_thread_callback(switch_core_session_t *session, swi
 
 
 	} else {
-		switch_img_fill(frame->img, 0, 0, img->d_w, img->d_h, &context->bgcolor);
+		switch_img_fill_noalpha(img, 0, 0, img->d_w, img->d_h, &context->bgcolor);
 	}
 
 	if (context->imgfg) {

src/switch_core_video.c

@@ -1362,6 +1362,33 @@ static inline void switch_img_draw_pixel(switch_image_t *img, int x, int y, swit
 #endif
 }
 
+SWITCH_DECLARE(void) switch_img_fill_noalpha(switch_image_t *img, int x, int y, int w, int h, switch_rgb_color_t *color)
+{
+#ifdef SWITCH_HAVE_YUV
+	int i;
+
+	if (img->fmt == SWITCH_IMG_FMT_ARGB) {
+		int max_w = img->d_w;
+		int max_h = img->d_h;
+		int j;
+		switch_rgb_color_t *rgb; 
+
+		for (i = 0; i < max_h; i++) {		
+			for (j = 0; j < max_w; j++) {
+				rgb = (switch_rgb_color_t *)(img->planes[SWITCH_PLANE_PACKED] + i * img->stride[SWITCH_PLANE_PACKED] + j * 4);
+
+				if (rgb->a != 0) {
+					continue;
+				}
+				
+				*rgb = *color;
+			}
+		}
+	}
+
+#endif
+}
+
 SWITCH_DECLARE(void) switch_img_fill(switch_image_t *img, int x, int y, int w, int h, switch_rgb_color_t *color)
 {
 #ifdef SWITCH_HAVE_YUV