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gst/deinterlace2/gstdeinterlace2.c: Don't use proxy_getcaps() but implement our own getcaps() function that doubles/h...
Original commit message from CVS: * gst/deinterlace2/gstdeinterlace2.c: (gst_deinterlace2_init), (gst_greatest_common_divisor), (gst_fraction_double), (gst_deinterlace2_getcaps), (gst_deinterlace2_setcaps): Don't use proxy_getcaps() but implement our own getcaps() function that doubles/halfs the framerate if all fields should be sent out.
This commit is contained in:
parent
81717e11be
commit
9c028ad75d
2 changed files with 207 additions and 9 deletions
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@ -1,3 +1,11 @@
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2008-08-02 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* gst/deinterlace2/gstdeinterlace2.c: (gst_deinterlace2_init),
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(gst_greatest_common_divisor), (gst_fraction_double),
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(gst_deinterlace2_getcaps), (gst_deinterlace2_setcaps):
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Don't use proxy_getcaps() but implement our own getcaps() function
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that doubles/halfs the framerate if all fields should be sent out.
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2008-08-02 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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2008-08-02 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* configure.ac:
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* configure.ac:
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@ -171,6 +171,7 @@ static void gst_deinterlace2_set_property (GObject * self, guint prop_id,
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static void gst_deinterlace2_get_property (GObject * self, guint prop_id,
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static void gst_deinterlace2_get_property (GObject * self, guint prop_id,
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GValue * value, GParamSpec * pspec);
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GValue * value, GParamSpec * pspec);
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static GstCaps *gst_deinterlace2_getcaps (GstPad * pad);
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static gboolean gst_deinterlace2_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_deinterlace2_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_deinterlace2_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_deinterlace2_sink_event (GstPad * pad, GstEvent * event);
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static GstFlowReturn gst_deinterlace2_chain (GstPad * pad, GstBuffer * buffer);
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static GstFlowReturn gst_deinterlace2_chain (GstPad * pad, GstBuffer * buffer);
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@ -337,7 +338,7 @@ gst_deinterlace2_init (GstDeinterlace2 * self, GstDeinterlace2Class * klass)
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gst_pad_set_setcaps_function (self->sinkpad,
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gst_pad_set_setcaps_function (self->sinkpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace2_setcaps));
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GST_DEBUG_FUNCPTR (gst_deinterlace2_setcaps));
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gst_pad_set_getcaps_function (self->sinkpad,
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gst_pad_set_getcaps_function (self->sinkpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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GST_DEBUG_FUNCPTR (gst_deinterlace2_getcaps));
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gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
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gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
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self->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
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self->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
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@ -350,7 +351,7 @@ gst_deinterlace2_init (GstDeinterlace2 * self, GstDeinterlace2Class * klass)
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gst_pad_set_setcaps_function (self->srcpad,
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gst_pad_set_setcaps_function (self->srcpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace2_setcaps));
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GST_DEBUG_FUNCPTR (gst_deinterlace2_setcaps));
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gst_pad_set_getcaps_function (self->srcpad,
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gst_pad_set_getcaps_function (self->srcpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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GST_DEBUG_FUNCPTR (gst_deinterlace2_getcaps));
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gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
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gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
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gst_element_no_more_pads (GST_ELEMENT (self));
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gst_element_no_more_pads (GST_ELEMENT (self));
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@ -667,6 +668,197 @@ gst_deinterlace2_chain (GstPad * pad, GstBuffer * buf)
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return ret;
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return ret;
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}
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}
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static gint
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gst_greatest_common_divisor (gint a, gint b)
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{
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while (b != 0) {
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int temp = a;
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a = b;
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b = temp % b;
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}
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return ABS (a);
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}
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static gboolean
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gst_fraction_double (gint * n_out, gint * d_out, gboolean half)
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{
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gint n, d, gcd;
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n = *n_out;
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d = *d_out;
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if (d == 0)
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return FALSE;
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if (n == 0 || (n == G_MAXINT && d == 1))
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return TRUE;
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gcd = gst_greatest_common_divisor (n, d);
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n /= gcd;
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d /= gcd;
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if (!half) {
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if (G_MAXINT / 2 >= ABS (n)) {
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n *= 2;
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} else if (d >= 2) {
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d /= 2;
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} else {
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return FALSE;
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}
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} else {
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if (G_MAXINT / 2 >= ABS (d)) {
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d *= 2;
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} else if (n >= 2) {
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n /= 2;
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} else {
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return FALSE;
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}
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}
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*n_out = n;
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*d_out = d;
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return TRUE;
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}
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static GstCaps *
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gst_deinterlace2_getcaps (GstPad * pad)
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{
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GstCaps *ret;
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GstDeinterlace2 *self = GST_DEINTERLACE2 (gst_pad_get_parent (pad));
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GstPad *otherpad;
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gint len;
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const GstCaps *ourcaps;
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GstCaps *peercaps;
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GST_OBJECT_LOCK (self);
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otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
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ourcaps = gst_pad_get_pad_template_caps (pad);
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peercaps = gst_pad_peer_get_caps (otherpad);
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if (peercaps) {
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ret = gst_caps_intersect (ourcaps, peercaps);
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gst_caps_unref (peercaps);
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} else {
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ret = gst_caps_copy (ourcaps);
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}
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GST_OBJECT_UNLOCK (self);
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if (self->fields == GST_DEINTERLACE2_ALL) {
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for (len = gst_caps_get_size (ret); len > 0; len--) {
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GstStructure *s = gst_caps_get_structure (ret, len - 1);
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const GValue *val;
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val = gst_structure_get_value (s, "framerate");
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if (!val)
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continue;
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if (G_VALUE_TYPE (val) == GST_TYPE_FRACTION) {
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gint n, d;
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n = gst_value_get_fraction_numerator (val);
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d = gst_value_get_fraction_denominator (val);
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if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
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goto error;
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}
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gst_structure_set (s, "framerate", GST_TYPE_FRACTION, n, d, NULL);
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} else if (G_VALUE_TYPE (val) == GST_TYPE_FRACTION_RANGE) {
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const GValue *min, *max;
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GValue nrange = { 0, }, nmin = {
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0,}, nmax = {
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0,};
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gint n, d;
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g_value_init (&nrange, GST_TYPE_FRACTION_RANGE);
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g_value_init (&nmin, GST_TYPE_FRACTION);
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g_value_init (&nmax, GST_TYPE_FRACTION);
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min = gst_value_get_fraction_range_min (val);
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max = gst_value_get_fraction_range_max (val);
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n = gst_value_get_fraction_numerator (min);
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d = gst_value_get_fraction_denominator (min);
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if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
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g_value_unset (&nrange);
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g_value_unset (&nmax);
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g_value_unset (&nmin);
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goto error;
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}
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gst_value_set_fraction (&nmin, n, d);
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n = gst_value_get_fraction_numerator (max);
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d = gst_value_get_fraction_denominator (max);
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if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
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g_value_unset (&nrange);
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g_value_unset (&nmax);
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g_value_unset (&nmin);
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goto error;
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}
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gst_value_set_fraction (&nmax, n, d);
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gst_value_set_fraction_range (&nrange, &nmin, &nmax);
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gst_structure_set_value (s, "framerate", &nrange);
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g_value_unset (&nmin);
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g_value_unset (&nmax);
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g_value_unset (&nrange);
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} else if (G_VALUE_TYPE (val) == GST_TYPE_LIST) {
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const GValue *lval;
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GValue nlist = { 0, };
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GValue nval = { 0, };
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gint i;
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g_value_init (&nlist, GST_TYPE_LIST);
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for (i = gst_value_list_get_size (val); i > 0; i--) {
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gint n, d;
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lval = gst_value_list_get_value (val, i);
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if (G_VALUE_TYPE (lval) != GST_TYPE_FRACTION)
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continue;
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n = gst_value_get_fraction_numerator (lval);
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d = gst_value_get_fraction_denominator (lval);
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/* Double/Half the framerate but if this fails simply
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* skip this value from the list */
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if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
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continue;
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}
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g_value_init (&nval, GST_TYPE_FRACTION);
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gst_value_set_fraction (&nval, n, d);
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gst_value_list_append_value (&nlist, &nval);
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g_value_unset (&nval);
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}
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gst_structure_set_value (s, "framerate", &nlist);
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g_value_unset (&nlist);
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}
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}
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}
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GST_DEBUG_OBJECT (pad, "Returning caps %" GST_PTR_FORMAT, ret);
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return ret;
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error:
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GST_ERROR_OBJECT (pad, "Unable to transform peer caps");
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gst_caps_unref (ret);
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return NULL;
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}
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static gboolean
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static gboolean
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gst_deinterlace2_setcaps (GstPad * pad, GstCaps * caps)
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gst_deinterlace2_setcaps (GstPad * pad, GstCaps * caps)
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{
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{
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@ -695,12 +887,10 @@ gst_deinterlace2_setcaps (GstPad * pad, GstCaps * caps)
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if (self->fields == GST_DEINTERLACE2_ALL) {
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if (self->fields == GST_DEINTERLACE2_ALL) {
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gint fps_n = self->frame_rate_n, fps_d = self->frame_rate_d;
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gint fps_n = self->frame_rate_n, fps_d = self->frame_rate_d;
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othercaps = gst_caps_copy (caps);
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if (!gst_fraction_double (&fps_n, &fps_d, otherpad != self->srcpad))
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goto invalid_caps;
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if (otherpad == self->srcpad)
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othercaps = gst_caps_copy (caps);
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fps_n *= 2;
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else
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fps_d *= 2;
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gst_caps_set_simple (othercaps, "framerate", GST_TYPE_FRACTION, fps_n,
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gst_caps_set_simple (othercaps, "framerate", GST_TYPE_FRACTION, fps_n,
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fps_d, NULL);
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fps_d, NULL);
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@ -748,12 +938,12 @@ done:
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invalid_caps:
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invalid_caps:
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res = FALSE;
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res = FALSE;
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GST_ERROR_OBJECT (self, "Invalid caps: %" GST_PTR_FORMAT, caps);
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GST_ERROR_OBJECT (pad, "Invalid caps: %" GST_PTR_FORMAT, caps);
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goto done;
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goto done;
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caps_not_accepted:
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caps_not_accepted:
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res = FALSE;
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res = FALSE;
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GST_ERROR_OBJECT (self, "Caps not accepted: %" GST_PTR_FORMAT, othercaps);
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GST_ERROR_OBJECT (pad, "Caps not accepted: %" GST_PTR_FORMAT, othercaps);
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gst_caps_unref (othercaps);
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gst_caps_unref (othercaps);
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goto done;
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goto done;
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}
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}
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