aspect and round params for vf_dsize.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16041 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 43 insertions, 3 deletions

diff --git a/libmpcodecs/vf_dsize.c b/libmpcodecs/vf_dsize.c
index 7806dc81d3..c6de0e73ee 100644
--- a/libmpcodecs/vf_dsize.c
+++ b/libmpcodecs/vf_dsize.c
@@ -12,6 +12,8 @@
 
 struct vf_priv_s {
 	int w, h;
+	int method; // aspect method, 0 -> downscale, 1-> upscale. +2 -> original aspect.
+	int round;
 	float aspect;
 };
 
@@ -19,7 +21,27 @@ static int config(struct vf_instance_s* vf,
 	int width, int height, int d_width, int d_height,
 	unsigned int flags, unsigned int outfmt)
 {
-	if (vf->priv->w && vf->priv->h) {
+	if (vf->priv->aspect < 0.001) { // did the user input aspect or w,h params
+		if (vf->priv->w == 0) vf->priv->w = d_width;
+		if (vf->priv->h == 0) vf->priv->h = d_height;
+		if (vf->priv->w == -1) vf->priv->w = width;
+		if (vf->priv->h == -1) vf->priv->h = height;
+		if (vf->priv->w == -2) vf->priv->w = vf->priv->h * (double)d_width / d_height;
+		if (vf->priv->w == -3) vf->priv->w = vf->priv->h * (double)width / height;
+		if (vf->priv->h == -2) vf->priv->h = vf->priv->w * (double)d_height / d_width;
+		if (vf->priv->h == -3) vf->priv->h = vf->priv->w * (double)height / width;
+		if (vf->priv->method > -1) {
+			double aspect = (vf->priv->method & 2) ? ((double)d_height / d_width) : ((double)height / width);
+			if ((vf->priv->h > vf->priv->w * aspect) ^ (vf->priv->method & 1)) {
+				vf->priv->h = vf->priv->w * aspect;
+			} else {
+				vf->priv->w = vf->priv->h / aspect;
+			}
+		}
+		if (vf->priv->round > 1) { // round up
+			vf->priv->w += (vf->priv->round - 1 - (vf->priv->w - 1) % vf->priv->round);
+			vf->priv->h += (vf->priv->round - 1 - (vf->priv->h - 1) % vf->priv->round);
+		}
 		d_width = vf->priv->w;
 		d_height = vf->priv->h;
 	} else {
@@ -34,13 +56,23 @@ static int config(struct vf_instance_s* vf,
 	return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
 }
 
+static void uninit(vf_instance_t *vf) {
+	free(vf->priv);
+	vf->priv = NULL;
+}
+
 static int open(vf_instance_t *vf, char* args)
 {
 	vf->config = config;
 	vf->draw_slice = vf_next_draw_slice;
+	vf->uninit = uninit;
 	//vf->default_caps = 0;
 	vf->priv = calloc(sizeof(struct vf_priv_s), 1);
-	vf->priv->aspect = 4.0/3.0;
+	vf->priv->aspect = 0.;
+	vf->priv->w = -1;
+	vf->priv->h = -1;
+	vf->priv->method = -1;
+	vf->priv->round = 1;
 	if (args) {
 		if (strchr(args, '/')) {
 			int w, h;
@@ -49,9 +81,17 @@ static int open(vf_instance_t *vf, char* args)
 		} else if (strchr(args, '.')) {
 			sscanf(args, "%f", &vf->priv->aspect);
 		} else {
-			sscanf(args, "%d:%d", &vf->priv->w, &vf->priv->h);
+			sscanf(args, "%d:%d:%d:%d", &vf->priv->w, &vf->priv->h, &vf->priv->method, &vf->priv->round);
 		}
 	}
+	if ((vf->priv->aspect < 0.) || (vf->priv->w < -3) || (vf->priv->h < -3) ||
+			((vf->priv->w < -1) && (vf->priv->h < -1)) ||
+			(vf->priv->method < -1) || (vf->priv->method > 3) ||
+			(vf->priv->round < 0)) {
+		mp_msg(MSGT_VFILTER, MSGL_ERR, "[dsize] Illegal value(s): aspect: %f w: %d h: %d aspect_method: %d round: %d\n", vf->priv->aspect, vf->priv->w, vf->priv->h, vf->priv->method, vf->priv->round);
+		free(vf->priv); vf->priv = NULL;
+		return -1;
+	}
 	return 1;
 }