mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 04:31:06 +00:00
[530/906] GstGLUpload: fix video scaling and use GL_UPLOAD_CAPS
This commit is contained in:
parent
d03ffe867d
commit
ed5deaa29b
1 changed files with 57 additions and 428 deletions
|
@ -87,9 +87,13 @@ static GstStaticPadTemplate gst_gl_upload_sink_pad_template =
|
||||||
GST_STATIC_PAD_TEMPLATE ("sink",
|
GST_STATIC_PAD_TEMPLATE ("sink",
|
||||||
GST_PAD_SINK,
|
GST_PAD_SINK,
|
||||||
GST_PAD_ALWAYS,
|
GST_PAD_ALWAYS,
|
||||||
GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
|
GST_STATIC_CAPS (GST_GL_UPLOAD_VIDEO_CAPS)
|
||||||
);
|
);
|
||||||
|
|
||||||
|
#define DEFAULT_WIDTH 320
|
||||||
|
#define DEFAULT_HEIGHT 240
|
||||||
|
#define DEFAULT_FORMAT "RGBA"
|
||||||
|
|
||||||
/* Properties */
|
/* Properties */
|
||||||
enum
|
enum
|
||||||
{
|
{
|
||||||
|
@ -301,23 +305,62 @@ gst_gl_upload_stop (GstBaseTransform * bt)
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* from videoconvert code */
|
||||||
|
/* copies the given caps */
|
||||||
|
static GstCaps *
|
||||||
|
gst_gl_upload_caps_remove_format_info (GstCaps * caps)
|
||||||
|
{
|
||||||
|
GstStructure *st;
|
||||||
|
gint i, n;
|
||||||
|
GstCaps *res;
|
||||||
|
|
||||||
|
res = gst_caps_new_empty ();
|
||||||
|
|
||||||
|
n = gst_caps_get_size (caps);
|
||||||
|
for (i = 0; i < n; i++) {
|
||||||
|
st = gst_caps_get_structure (caps, i);
|
||||||
|
|
||||||
|
/* If this is already expressed by the existing caps
|
||||||
|
* skip this structure */
|
||||||
|
if (i > 0 && gst_caps_is_subset_structure (res, st))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
st = gst_structure_copy (st);
|
||||||
|
gst_structure_set (st, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
|
||||||
|
gst_structure_set (st, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
|
||||||
|
gst_structure_remove_fields (st, "format", "palette_data",
|
||||||
|
"colorimetry", "chroma-site", NULL);
|
||||||
|
gst_caps_append_structure (res, st);
|
||||||
|
}
|
||||||
|
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
|
||||||
static GstCaps *
|
static GstCaps *
|
||||||
gst_gl_upload_transform_caps (GstBaseTransform * bt,
|
gst_gl_upload_transform_caps (GstBaseTransform * bt,
|
||||||
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
|
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
|
||||||
{
|
{
|
||||||
//GstGLUpload* upload = GST_GL_UPLOAD (bt);
|
GstCaps *tmp, *tmp2;
|
||||||
GstCaps *newcaps;
|
GstCaps *result;
|
||||||
|
|
||||||
GST_DEBUG ("transform caps %" GST_PTR_FORMAT, caps);
|
/* Get all possible caps that we can transform to */
|
||||||
|
tmp = gst_gl_upload_caps_remove_format_info (caps);
|
||||||
|
|
||||||
if (filter)
|
GST_DEBUG_OBJECT (bt, "intersecting %" GST_PTR_FORMAT " with %"
|
||||||
newcaps = gst_caps_intersect (caps, filter);
|
GST_PTR_FORMAT, filter, tmp);
|
||||||
else
|
|
||||||
newcaps = gst_caps_ref (caps);
|
|
||||||
|
|
||||||
GST_DEBUG ("new caps %" GST_PTR_FORMAT, newcaps);
|
if (filter) {
|
||||||
|
tmp2 = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
|
||||||
|
gst_caps_unref (tmp);
|
||||||
|
tmp = tmp2;
|
||||||
|
}
|
||||||
|
|
||||||
return newcaps;
|
result = tmp;
|
||||||
|
|
||||||
|
GST_DEBUG_OBJECT (bt, "transformed %" GST_PTR_FORMAT " into %"
|
||||||
|
GST_PTR_FORMAT, caps, result);
|
||||||
|
|
||||||
|
return result;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* from gst-plugins-base "videoscale" code */
|
/* from gst-plugins-base "videoscale" code */
|
||||||
|
@ -325,10 +368,7 @@ static GstCaps *
|
||||||
gst_gl_upload_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
|
gst_gl_upload_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
|
||||||
GstCaps * caps, GstCaps * othercaps)
|
GstCaps * caps, GstCaps * othercaps)
|
||||||
{
|
{
|
||||||
GstStructure *ins, *outs;
|
GstStructure *outs;
|
||||||
const GValue *from_par, *to_par;
|
|
||||||
GValue fpar = { 0, }, tpar = {
|
|
||||||
0,};
|
|
||||||
|
|
||||||
othercaps = gst_caps_truncate (othercaps);
|
othercaps = gst_caps_truncate (othercaps);
|
||||||
othercaps = gst_caps_make_writable (othercaps);
|
othercaps = gst_caps_make_writable (othercaps);
|
||||||
|
@ -336,425 +376,14 @@ gst_gl_upload_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
|
||||||
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
|
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
|
||||||
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
|
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
|
||||||
|
|
||||||
ins = gst_caps_get_structure (caps, 0);
|
|
||||||
outs = gst_caps_get_structure (othercaps, 0);
|
outs = gst_caps_get_structure (othercaps, 0);
|
||||||
|
|
||||||
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
|
gst_structure_fixate_field_nearest_int (outs, "width", DEFAULT_WIDTH);
|
||||||
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
|
gst_structure_fixate_field_nearest_int (outs, "height", DEFAULT_HEIGHT);
|
||||||
|
gst_structure_fixate_field_string (outs, "format", DEFAULT_FORMAT);
|
||||||
|
|
||||||
/* If we're fixating from the sinkpad we always set the PAR andcould not cop
|
|
||||||
* assume that missing PAR on the sinkpad means 1/1 and
|
|
||||||
* missing PAR on the srcpad means undefined
|
|
||||||
*/
|
|
||||||
if (direction == GST_PAD_SINK) {
|
|
||||||
if (!from_par) {
|
|
||||||
g_value_init (&fpar, GST_TYPE_FRACTION);
|
|
||||||
gst_value_set_fraction (&fpar, 1, 1);
|
|
||||||
from_par = &fpar;
|
|
||||||
}
|
|
||||||
if (!to_par) {
|
|
||||||
g_value_init (&tpar, GST_TYPE_FRACTION_RANGE);
|
|
||||||
gst_value_set_fraction_range_full (&tpar, 1, G_MAXINT, G_MAXINT, 1);
|
|
||||||
to_par = &tpar;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
if (!to_par) {
|
|
||||||
g_value_init (&tpar, GST_TYPE_FRACTION);
|
|
||||||
gst_value_set_fraction (&tpar, 1, 1);
|
|
||||||
to_par = &tpar;
|
|
||||||
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
|
|
||||||
NULL);
|
|
||||||
}
|
|
||||||
if (!from_par) {
|
|
||||||
g_value_init (&fpar, GST_TYPE_FRACTION);
|
|
||||||
gst_value_set_fraction (&fpar, 1, 1);
|
|
||||||
from_par = &fpar;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* we have both PAR but they might not be fixated */
|
|
||||||
{
|
|
||||||
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
|
|
||||||
gint w = 0, h = 0;
|
|
||||||
gint from_dar_n, from_dar_d;
|
|
||||||
gint num, den;
|
|
||||||
|
|
||||||
/* from_par should be fixed */
|
|
||||||
g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps);
|
|
||||||
|
|
||||||
from_par_n = gst_value_get_fraction_numerator (from_par);
|
|
||||||
from_par_d = gst_value_get_fraction_denominator (from_par);
|
|
||||||
|
|
||||||
gst_structure_get_int (ins, "width", &from_w);
|
|
||||||
gst_structure_get_int (ins, "height", &from_h);
|
|
||||||
|
|
||||||
gst_structure_get_int (outs, "width", &w);
|
|
||||||
gst_structure_get_int (outs, "height", &h);
|
|
||||||
|
|
||||||
/* if both width and height are already fixed, we can't do anything
|
|
||||||
* about it anymore */
|
|
||||||
if (w && h) {
|
|
||||||
guint n, d;
|
|
||||||
|
|
||||||
GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
|
|
||||||
w, h);
|
|
||||||
if (!gst_value_is_fixed (to_par)) {
|
|
||||||
if (gst_video_calculate_display_ratio (&n, &d, from_w, from_h,
|
|
||||||
from_par_n, from_par_d, w, h)) {
|
|
||||||
GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", n, d);
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio"))
|
|
||||||
gst_structure_fixate_field_nearest_fraction (outs,
|
|
||||||
"pixel-aspect-ratio", n, d);
|
|
||||||
else if (n != d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
n, d, NULL);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Calculate input DAR */
|
|
||||||
if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d,
|
|
||||||
&from_dar_n, &from_dar_d)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
GST_DEBUG_OBJECT (base, "Input DAR is %d/%d", from_dar_n, from_dar_d);
|
|
||||||
|
|
||||||
/* If either width or height are fixed there's not much we
|
|
||||||
* can do either except choosing a height or width and PAR
|
|
||||||
* that matches the DAR as good as possible
|
|
||||||
*/
|
|
||||||
if (h) {
|
|
||||||
GstStructure *tmp;
|
|
||||||
gint set_w, set_par_n, set_par_d;
|
|
||||||
|
|
||||||
GST_DEBUG_OBJECT (base, "height is fixed (%d)", h);
|
|
||||||
|
|
||||||
/* If the PAR is fixed too, there's not much to do
|
|
||||||
* except choosing the width that is nearest to the
|
|
||||||
* width with the same DAR */
|
|
||||||
if (gst_value_is_fixed (to_par)) {
|
|
||||||
to_par_n = gst_value_get_fraction_numerator (to_par);
|
|
||||||
to_par_d = gst_value_get_fraction_denominator (to_par);
|
|
||||||
|
|
||||||
GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d);
|
|
||||||
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
|
|
||||||
to_par_n, &num, &den)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
||||||
gst_structure_fixate_field_nearest_int (outs, "width", w);
|
|
||||||
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* The PAR is not fixed and it's quite likely that we can set
|
|
||||||
* an arbitrary PAR. */
|
|
||||||
|
|
||||||
/* Check if we can keep the input width */
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
|
|
||||||
gst_structure_get_int (tmp, "width", &set_w);
|
|
||||||
|
|
||||||
/* Might have failed but try to keep the DAR nonetheless by
|
|
||||||
* adjusting the PAR */
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, h, set_w,
|
|
||||||
&to_par_n, &to_par_d)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
|
|
||||||
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
|
|
||||||
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
|
|
||||||
to_par_n, to_par_d);
|
|
||||||
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
|
|
||||||
&set_par_d);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
/* Check if the adjusted PAR is accepted */
|
|
||||||
if (set_par_n == to_par_n && set_par_d == to_par_d) {
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, set_w,
|
|
||||||
"pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d,
|
|
||||||
NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Otherwise scale the width to the new PAR and check if the
|
|
||||||
* adjusted with is accepted. If all that fails we can't keep
|
|
||||||
* the DAR */
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
|
|
||||||
set_par_n, &num, &den)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
||||||
gst_structure_fixate_field_nearest_int (outs, "width", w);
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
set_par_n, set_par_d, NULL);
|
|
||||||
|
|
||||||
goto done;
|
|
||||||
} else if (w) {
|
|
||||||
GstStructure *tmp;
|
|
||||||
gint set_h, set_par_n, set_par_d;
|
|
||||||
|
|
||||||
GST_DEBUG_OBJECT (base, "width is fixed (%d)", w);
|
|
||||||
|
|
||||||
/* If the PAR is fixed too, there's not much to do
|
|
||||||
* except choosing the height that is nearest to the
|
|
||||||
* height with the same DAR */
|
|
||||||
if (gst_value_is_fixed (to_par)) {
|
|
||||||
to_par_n = gst_value_get_fraction_numerator (to_par);
|
|
||||||
to_par_d = gst_value_get_fraction_denominator (to_par);
|
|
||||||
|
|
||||||
GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d);
|
|
||||||
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
|
|
||||||
to_par_n, &num, &den)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
h = (guint) gst_util_uint64_scale_int (w, den, num);
|
|
||||||
gst_structure_fixate_field_nearest_int (outs, "height", h);
|
|
||||||
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* The PAR is not fixed and it's quite likely that we can set
|
|
||||||
* an arbitrary PAR. */
|
|
||||||
|
|
||||||
/* Check if we can keep the input height */
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
|
|
||||||
gst_structure_get_int (tmp, "height", &set_h);
|
|
||||||
|
|
||||||
/* Might have failed but try to keep the DAR nonetheless by
|
|
||||||
* adjusting the PAR */
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, w,
|
|
||||||
&to_par_n, &to_par_d)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
|
|
||||||
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
|
|
||||||
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
|
|
||||||
to_par_n, to_par_d);
|
|
||||||
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
|
|
||||||
&set_par_d);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
/* Check if the adjusted PAR is accepted */
|
|
||||||
if (set_par_n == to_par_n && set_par_d == to_par_d) {
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "height", G_TYPE_INT, set_h,
|
|
||||||
"pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d,
|
|
||||||
NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Otherwise scale the height to the new PAR and check if the
|
|
||||||
* adjusted with is accepted. If all that fails we can't keep
|
|
||||||
* the DAR */
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
|
|
||||||
set_par_n, &num, &den)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
h = (guint) gst_util_uint64_scale_int (w, den, num);
|
|
||||||
gst_structure_fixate_field_nearest_int (outs, "height", h);
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
set_par_n, set_par_d, NULL);
|
|
||||||
|
|
||||||
goto done;
|
|
||||||
} else if (gst_value_is_fixed (to_par)) {
|
|
||||||
GstStructure *tmp;
|
|
||||||
gint set_h, set_w, f_h, f_w;
|
|
||||||
|
|
||||||
to_par_n = gst_value_get_fraction_numerator (to_par);
|
|
||||||
to_par_d = gst_value_get_fraction_denominator (to_par);
|
|
||||||
|
|
||||||
/* Calculate scale factor for the PAR change */
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n,
|
|
||||||
to_par_d, &num, &den)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Try to keep the input height (because of interlacing) */
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
|
|
||||||
gst_structure_get_int (tmp, "height", &set_h);
|
|
||||||
|
|
||||||
/* This might have failed but try to scale the width
|
|
||||||
* to keep the DAR nonetheless */
|
|
||||||
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "width", w);
|
|
||||||
gst_structure_get_int (tmp, "width", &set_w);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
/* We kept the DAR and the height is nearest to the original height */
|
|
||||||
if (set_w == w) {
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
||||||
G_TYPE_INT, set_h, NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
f_h = set_h;
|
|
||||||
f_w = set_w;
|
|
||||||
|
|
||||||
/* If the former failed, try to keep the input width at least */
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
|
|
||||||
gst_structure_get_int (tmp, "width", &set_w);
|
|
||||||
|
|
||||||
/* This might have failed but try to scale the width
|
|
||||||
* to keep the DAR nonetheless */
|
|
||||||
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "height", h);
|
|
||||||
gst_structure_get_int (tmp, "height", &set_h);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
/* We kept the DAR and the width is nearest to the original width */
|
|
||||||
if (set_h == h) {
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
||||||
G_TYPE_INT, set_h, NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If all this failed, keep the height that was nearest to the orignal
|
|
||||||
* height and the nearest possible width. This changes the DAR but
|
|
||||||
* there's not much else to do here.
|
|
||||||
*/
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT,
|
|
||||||
f_h, NULL);
|
|
||||||
goto done;
|
|
||||||
} else {
|
|
||||||
GstStructure *tmp;
|
|
||||||
gint set_h, set_w, set_par_n, set_par_d, tmp2;
|
|
||||||
|
|
||||||
/* width, height and PAR are not fixed but passthrough is not possible */
|
|
||||||
|
|
||||||
/* First try to keep the height and width as good as possible
|
|
||||||
* and scale PAR */
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
|
|
||||||
gst_structure_get_int (tmp, "height", &set_h);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
|
|
||||||
gst_structure_get_int (tmp, "width", &set_w);
|
|
||||||
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w,
|
|
||||||
&to_par_n, &to_par_d)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
|
|
||||||
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
|
|
||||||
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
|
|
||||||
to_par_n, to_par_d);
|
|
||||||
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
|
|
||||||
&set_par_d);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
if (set_par_n == to_par_n && set_par_d == to_par_d) {
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
||||||
G_TYPE_INT, set_h, NULL);
|
|
||||||
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
set_par_n, set_par_d, NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Otherwise try to scale width to keep the DAR with the set
|
|
||||||
* PAR and height */
|
|
||||||
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
|
|
||||||
set_par_n, &num, &den)) {
|
|
||||||
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
||||||
("Error calculating the output scaled size - integer overflow"));
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "width", w);
|
|
||||||
gst_structure_get_int (tmp, "width", &tmp2);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
if (tmp2 == w) {
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height",
|
|
||||||
G_TYPE_INT, set_h, NULL);
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
set_par_n, set_par_d, NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* ... or try the same with the height */
|
|
||||||
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
|
|
||||||
tmp = gst_structure_copy (outs);
|
|
||||||
gst_structure_fixate_field_nearest_int (tmp, "height", h);
|
|
||||||
gst_structure_get_int (tmp, "height", &tmp2);
|
|
||||||
gst_structure_free (tmp);
|
|
||||||
|
|
||||||
if (tmp2 == h) {
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
||||||
G_TYPE_INT, tmp2, NULL);
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
set_par_n, set_par_d, NULL);
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* If all fails we can't keep the DAR and take the nearest values
|
|
||||||
* for everything from the first try */
|
|
||||||
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
||||||
G_TYPE_INT, set_h, NULL);
|
|
||||||
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
||||||
set_par_n != set_par_d)
|
|
||||||
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
||||||
set_par_n, set_par_d, NULL);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
done:
|
|
||||||
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
|
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
|
||||||
|
|
||||||
if (from_par == &fpar)
|
|
||||||
g_value_unset (&fpar);
|
|
||||||
if (to_par == &tpar)
|
|
||||||
g_value_unset (&tpar);
|
|
||||||
|
|
||||||
return othercaps;
|
return othercaps;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue