Improve a few log messages

src/pipeline.c

@@ -265,12 +265,12 @@ libmegapixels_select_mode(libmegapixels_camera *camera, libmegapixels_mode *mode
 				}
 
 				if (subdev_fmt.format.width != cmd->width || subdev_fmt.format.height != cmd->height) {
-					log_error("Driver rejected resolution %dx%d, changed to %dx%d\n", cmd->width, cmd->height,
+					log_error("Driver rejected resolution try: %dx%d, changed to %dx%d\n", cmd->width, cmd->height,
 						subdev_fmt.format.width, subdev_fmt.format.height);
 					break;
 				}
 				if (subdev_fmt.format.code != libmegapixels_format_to_media_busfmt(cmd->format)) {
-					log_error("Driver rejected pixfmt try: %d\n", subdev_fmt.format.code);
+					log_error("Driver rejected pixfmt try: 0x%x\n", subdev_fmt.format.code);
 					break;
 				}
 				subdev_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
@@ -287,7 +287,7 @@ libmegapixels_select_mode(libmegapixels_camera *camera, libmegapixels_mode *mode
 					break;
 				}
 				if (subdev_fmt.format.code != libmegapixels_format_to_media_busfmt(cmd->format)) {
-					log_error("Driver rejected pixfmt: %d\n", subdev_fmt.format.code);
+					log_error("Driver rejected pixfmt: 0x%x\n", subdev_fmt.format.code);
 					break;
 				}
 				break;