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videoscale: Correct DAR and border calculations

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changed: gst_video_scale_set_info in gst/videoscale/gstvideoscale.c
DAR on sink side now calculated with PAR on sink side
ratio of output width/height now calculated with inverse PAR
additional condition that borders are 0:0 for passthrough mode

https://bugzilla.gnome.org/show_bug.cgi?id=696019
This commit is contained in:
Jan Schole 2013-03-20 19:34:06 +01:00 committed by Sebastian Dröge
parent 2f2e3676b1
commit 8e791d52aa
1 changed files with 5 additions and 4 deletions
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9
gst/videoscale/gstvideoscale.c
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@ -507,7 +507,7 @@ gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
gint from_dar_n, from_dar_d, to_dar_n, to_dar_d;
if (!gst_util_fraction_multiply (in_info->width,
in_info->height, out_info->par_n, out_info->par_d, &from_dar_n,
in_info->height, in_info->par_n, in_info->par_d, &from_dar_n,
&from_dar_d)) {
from_dar_n = from_dar_d = -1;
}
@ -525,7 +525,7 @@ gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
if (from_dar_n != -1 && from_dar_d != -1
&& gst_util_fraction_multiply (from_dar_n, from_dar_d,
out_info->par_n, out_info->par_d, &n, &d)) {
out_info->par_d, out_info->par_n, &n, &d)) {
to_h = gst_util_uint64_scale_int (out_info->width, d, n);
if (to_h <= out_info->height) {
videoscale->borders_h = out_info->height - to_h;
@ -548,7 +548,8 @@ gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
g_free (videoscale->tmp_buf);
videoscale->tmp_buf = g_malloc (out_info->width * sizeof (guint64) * 4);
if (in_info->width == out_info->width && in_info->height == out_info->height) {
if (in_info->width == out_info->width && in_info->height == out_info->height
&& videoscale->borders_w == 0 && videoscale->borders_h == 0) {
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), TRUE);
} else {
GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, filter, "setup videoscaling");
@ -558,7 +559,7 @@ gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
GST_DEBUG_OBJECT (videoscale, "from=%dx%d (par=%d/%d dar=%d/%d), size %"
G_GSIZE_FORMAT " -> to=%dx%d (par=%d/%d dar=%d/%d borders=%d:%d), "
"size %" G_GSIZE_FORMAT,
in_info->width, in_info->height, out_info->par_n, out_info->par_d,
in_info->width, in_info->height, in_info->par_n, in_info->par_d,
from_dar_n, from_dar_d, in_info->size, out_info->width,
out_info->height, out_info->par_n, out_info->par_d, to_dar_n, to_dar_d,
videoscale->borders_w, videoscale->borders_h, out_info->size);