obs-x264: Call video info func to get format

Call the video information function to determine the video format that
needs to be used to prevent having to use the same code in the update
function.

plugins/obs-x264/obs-x264.c

@@ -346,11 +346,20 @@ static inline int get_x264_cs_val(enum video_colorspace cs,
 	return 0;
 }
 
+static void obs_x264_video_info(void *data, struct video_scale_info *info);
+
 static void update_params(struct obs_x264 *obsx264, obs_data_t *settings,
 		char **params)
 {
 	video_t *video = obs_encoder_video(obsx264->encoder);
 	const struct video_output_info *voi = video_output_get_info(video);
+	struct video_scale_info info;
+
+	info.format = voi->format;
+	info.colorspace = voi->colorspace;
+	info.range = voi->range;
+
+	obs_x264_video_info(obsx264, &info);
 
 	int bitrate      = (int)obs_data_get_int(settings, "bitrate");
 	int buffer_size  = (int)obs_data_get_int(settings, "buffer_size");
@@ -381,13 +390,13 @@ static void update_params(struct obs_x264 *obsx264, obs_data_t *settings,
 	obsx264->params.i_log_level          = X264_LOG_WARNING;
 
 	obsx264->params.vui.i_transfer =
-		get_x264_cs_val(voi->colorspace, x264_transfer_names);
+		get_x264_cs_val(info.colorspace, x264_transfer_names);
 	obsx264->params.vui.i_colmatrix =
-		get_x264_cs_val(voi->colorspace, x264_colmatrix_names);
+		get_x264_cs_val(info.colorspace, x264_colmatrix_names);
 	obsx264->params.vui.i_colorprim =
-		get_x264_cs_val(voi->colorspace, x264_colorprim_names);
+		get_x264_cs_val(info.colorspace, x264_colorprim_names);
 	obsx264->params.vui.b_fullrange =
-		voi->range == VIDEO_RANGE_FULL;
+		info.range == VIDEO_RANGE_FULL;
 
 	/* use the new filler method for CBR to allow real-time adjusting of
 	 * the bitrate */
@@ -405,11 +414,11 @@ static void update_params(struct obs_x264 *obsx264, obs_data_t *settings,
 		obsx264->params.rc.f_rf_constant = (float)crf;
 	}
 
-	if (voi->format == VIDEO_FORMAT_NV12)
+	if (info.format == VIDEO_FORMAT_NV12)
 		obsx264->params.i_csp = X264_CSP_NV12;
-	else if (voi->format == VIDEO_FORMAT_I420)
+	else if (info.format == VIDEO_FORMAT_I420)
 		obsx264->params.i_csp = X264_CSP_I420;
-	else if (voi->format == VIDEO_FORMAT_I444)
+	else if (info.format == VIDEO_FORMAT_I444)
 		obsx264->params.i_csp = X264_CSP_I444;
 	else
 		obsx264->params.i_csp = X264_CSP_NV12;