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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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value: add structure intersect/union/is_subset/fixate implementations
Allows proper usage of structures in structures in caps. Subtraction is not implemented due to complications with empty fields representing all possible values. The only implementation that doesn't delegate to the already existing GstStructure functions is the union function. https://bugzilla.gnome.org/show_bug.cgi?id=775796
This commit is contained in:
Matthew Waters
parent
865247d32a
commit
ad40c5cd36
154
gst/gstvalue.c
154
gst/gstvalue.c
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@ -327,7 +327,8 @@ gst_type_is_fixed (GType type)
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/* our fundamental types that are certainly not fixed */
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if (type == GST_TYPE_INT_RANGE || type == GST_TYPE_DOUBLE_RANGE ||
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type == GST_TYPE_INT64_RANGE ||
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type == GST_TYPE_LIST || type == GST_TYPE_FRACTION_RANGE) {
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type == GST_TYPE_LIST || type == GST_TYPE_FRACTION_RANGE ||
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type == GST_TYPE_STRUCTURE) {
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return FALSE;
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}
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/* other (boxed) types that are fixed */
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@ -3550,6 +3551,21 @@ gst_value_is_subset_flagset_flagset (const GValue * value1,
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return TRUE;
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}
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static gboolean
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gst_value_is_subset_structure_structure (const GValue * value1,
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const GValue * value2)
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{
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const GstStructure *s1, *s2;
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g_return_val_if_fail (GST_VALUE_HOLDS_STRUCTURE (value1), FALSE);
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g_return_val_if_fail (GST_VALUE_HOLDS_STRUCTURE (value2), FALSE);
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s1 = gst_value_get_structure (value1);
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s2 = gst_value_get_structure (value2);
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return gst_structure_is_subset (s1, s2);
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}
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/**
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* gst_value_is_subset:
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* @value1: a #GValue
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@ -3574,6 +3590,9 @@ gst_value_is_subset (const GValue * value1, const GValue * value2)
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} else if (GST_VALUE_HOLDS_FLAG_SET (value1) &&
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GST_VALUE_HOLDS_FLAG_SET (value2)) {
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return gst_value_is_subset_flagset_flagset (value1, value2);
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} else if (GST_VALUE_HOLDS_STRUCTURE (value1)
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&& GST_VALUE_HOLDS_STRUCTURE (value2)) {
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return gst_value_is_subset_structure_structure (value1, value2);
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}
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/*
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@ -3773,6 +3792,81 @@ gst_value_union_flagset_flagset (GValue * dest, const GValue * src1,
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return TRUE;
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}
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/* iterating over the result taking the union with the other structure's value */
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static gboolean
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structure_field_union_into (GQuark field_id, GValue * val, gpointer user_data)
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{
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GstStructure *other = user_data;
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const GValue *other_value;
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GValue res_value = G_VALUE_INIT;
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other_value = gst_structure_id_get_value (other, field_id);
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/* no value in the other struct, just keep this value */
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if (!other_value)
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return TRUE;
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if (!gst_value_union (&res_value, val, other_value))
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return FALSE;
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g_value_unset (val);
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gst_value_init_and_copy (val, &res_value);
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return TRUE;
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}
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/* iterating over the other source structure adding missing values */
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static gboolean
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structure_field_union_from (GQuark field_id, const GValue * other_val,
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gpointer user_data)
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{
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GstStructure *result = user_data;
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const GValue *result_value;
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result_value = gst_structure_id_get_value (result, field_id);
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if (!result_value)
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gst_structure_id_set_value (result, field_id, other_val);
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return TRUE;
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}
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static gboolean
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gst_value_union_structure_structure (GValue * dest, const GValue * src1,
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const GValue * src2)
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{
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const GstStructure *s1, *s2;
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GstStructure *result;
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gboolean ret;
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g_return_val_if_fail (GST_VALUE_HOLDS_STRUCTURE (src1), FALSE);
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g_return_val_if_fail (GST_VALUE_HOLDS_STRUCTURE (src2), FALSE);
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s1 = gst_value_get_structure (src1);
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s2 = gst_value_get_structure (src2);
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/* Can't join two structures with different names into a single structure */
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if (!gst_structure_has_name (s1, gst_structure_get_name (s2))) {
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gst_value_list_concat (dest, src1, src2);
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return TRUE;
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}
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result = gst_structure_copy (s1);
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ret =
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gst_structure_map_in_place (result, structure_field_union_into,
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(gpointer) s2);
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if (!ret)
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goto out;
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ret =
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gst_structure_foreach (s2, structure_field_union_from, (gpointer) result);
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if (ret) {
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g_value_init (dest, GST_TYPE_STRUCTURE);
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gst_value_set_structure (dest, result);
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}
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out:
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gst_structure_free (result);
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return ret;
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}
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/****************
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* intersection *
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****************/
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@ -4152,6 +4246,29 @@ gst_value_intersect_flagset_flagset (GValue * dest,
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return TRUE;
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}
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static gboolean
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gst_value_intersect_structure_structure (GValue * dest,
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const GValue * src1, const GValue * src2)
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{
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const GstStructure *s1, *s2;
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GstStructure *d1;
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s1 = gst_value_get_structure (src1);
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s2 = gst_value_get_structure (src2);
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d1 = gst_structure_intersect (s1, s2);
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if (!d1)
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return FALSE;
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if (dest) {
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g_value_init (dest, GST_TYPE_STRUCTURE);
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gst_value_set_structure (dest, d1);
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}
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gst_structure_free (d1);
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return TRUE;
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}
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/***************
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* subtraction *
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***************/
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@ -4696,7 +4813,6 @@ gst_value_subtract_fraction_range_fraction_range (GValue * dest,
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return TRUE;
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}
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/**************
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* comparison *
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**************/
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@ -5305,6 +5421,8 @@ gst_value_can_subtract (const GValue * minuend, const GValue * subtrahend)
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/* special cases */
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if (mtype == GST_TYPE_LIST || stype == GST_TYPE_LIST)
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return TRUE;
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if (mtype == GST_TYPE_STRUCTURE || stype == GST_TYPE_STRUCTURE)
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return FALSE;
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len = gst_value_subtract_funcs->len;
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for (i = 0; i < len; i++) {
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@ -5491,6 +5609,13 @@ gst_value_deserialize (GValue * dest, const gchar * src)
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return FALSE;
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}
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static gboolean
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structure_field_is_fixed (GQuark field_id, const GValue * val,
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gpointer user_data)
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{
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return gst_value_is_fixed (val);
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}
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/**
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* gst_value_is_fixed:
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* @value: the #GValue to check
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@ -5532,6 +5657,9 @@ gst_value_is_fixed (const GValue * value)
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} else if (GST_VALUE_HOLDS_FLAG_SET (value)) {
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/* Flagsets are only fixed if there are no 'don't care' bits */
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return (gst_value_get_flagset_mask (value) == GST_FLAG_SET_MASK_EXACT);
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} else if (GST_VALUE_HOLDS_STRUCTURE (value)) {
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return gst_structure_foreach (gst_value_get_structure (value),
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structure_field_is_fixed, NULL);
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}
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return gst_type_is_fixed (type);
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}
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@ -5607,6 +5735,19 @@ gst_value_fixate (GValue * dest, const GValue * src)
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g_value_init (dest, G_VALUE_TYPE (src));
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gst_value_set_flagset (dest, flags, GST_FLAG_SET_MASK_EXACT);
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return TRUE;
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} else if (GST_VALUE_HOLDS_STRUCTURE (src)) {
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const GstStructure *str = (GstStructure *) gst_value_get_structure (src);
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GstStructure *kid;
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if (!str)
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return FALSE;
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kid = gst_structure_copy (str);
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gst_structure_fixate (kid);
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g_value_init (dest, GST_TYPE_STRUCTURE);
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gst_value_set_structure (dest, kid);
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gst_structure_free (kid);
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return TRUE;
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} else {
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return FALSE;
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}
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@ -6771,9 +6912,10 @@ G_STMT_START { \
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/* These initial sizes are used for the tables
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* below, and save a couple of reallocs at startup */
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static const gint GST_VALUE_TABLE_DEFAULT_SIZE = 35;
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static const gint GST_VALUE_UNION_TABLE_DEFAULT_SIZE = 3;
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static const gint GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE = 10;
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static const gint GST_VALUE_UNION_TABLE_DEFAULT_SIZE = 4;
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static const gint GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE = 11;
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static const gint GST_VALUE_SUBTRACT_TABLE_DEFAULT_SIZE = 12;
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void
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@ -6905,6 +7047,8 @@ _priv_gst_value_initialize (void)
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gst_value_intersect_fraction_range_fraction_range);
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gst_value_register_intersect_func (GST_TYPE_FLAG_SET, GST_TYPE_FLAG_SET,
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gst_value_intersect_flagset_flagset);
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gst_value_register_intersect_func (GST_TYPE_STRUCTURE, GST_TYPE_STRUCTURE,
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gst_value_intersect_structure_structure);
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gst_value_register_subtract_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
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gst_value_subtract_int_int_range);
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@ -6945,6 +7089,8 @@ _priv_gst_value_initialize (void)
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gst_value_union_int_range_int_range);
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gst_value_register_union_func (GST_TYPE_FLAG_SET, GST_TYPE_FLAG_SET,
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gst_value_union_flagset_flagset);
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gst_value_register_union_func (GST_TYPE_STRUCTURE, GST_TYPE_STRUCTURE,
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gst_value_union_structure_structure);
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#if GST_VERSION_NANO == 1
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/* If building from git master, check starting array sizes matched actual size
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@ -3115,6 +3115,164 @@ GST_START_TEST (test_stepped_int_range_ops)
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GST_END_TEST;
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GST_START_TEST (test_structure_basic)
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{
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GstStructure *s1, *s2;
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GValue v1 = G_VALUE_INIT, v2 = G_VALUE_INIT;
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/* sanity test */
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s1 = gst_structure_from_string ("foo,bar=1", NULL);
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g_value_init (&v1, GST_TYPE_STRUCTURE);
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gst_value_set_structure (&v1, s1);
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fail_unless (gst_structure_is_equal (s1, gst_value_get_structure (&v1)));
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s2 = gst_structure_copy (s1);
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g_value_init (&v2, GST_TYPE_STRUCTURE);
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gst_value_set_structure (&v2, s2);
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/* can do everything but subtract */
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fail_unless (gst_value_can_compare (&v1, &v2));
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fail_unless (gst_value_can_intersect (&v1, &v2));
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fail_unless (!gst_value_can_subtract (&v1, &v2));
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fail_unless (gst_value_can_union (&v1, &v2));
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gst_structure_free (s1);
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gst_structure_free (s2);
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g_value_unset (&v1);
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g_value_unset (&v2);
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}
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GST_END_TEST;
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GST_START_TEST (test_structure_single_ops)
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{
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static const struct
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{
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const gchar *str1;
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gboolean is_fixed;
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gboolean can_fixate;
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} single_struct[] = {
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{
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"foo,bar=(int)1", TRUE, TRUE}, {
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"foo,bar=(int)[1,2]", FALSE, TRUE},};
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gint i;
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for (i = 0; i < G_N_ELEMENTS (single_struct); i++) {
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GstStructure *s1 = gst_structure_from_string (single_struct[i].str1, NULL);
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GValue v1 = G_VALUE_INIT;
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GValue v2 = G_VALUE_INIT;
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fail_unless (s1 != NULL);
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GST_DEBUG ("checking structure %" GST_PTR_FORMAT, s1);
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g_value_init (&v1, GST_TYPE_STRUCTURE);
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gst_value_set_structure (&v1, s1);
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fail_unless (gst_value_is_fixed (&v1) == single_struct[i].is_fixed);
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fail_unless (gst_value_fixate (&v2, &v1) == single_struct[i].can_fixate);
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if (single_struct[i].can_fixate)
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g_value_unset (&v2);
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g_value_unset (&v1);
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gst_structure_free (s1);
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}
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}
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GST_END_TEST;
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GST_START_TEST (test_structure_ops)
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{
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struct
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{
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const gchar *str1;
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const gchar *str2;
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const gchar *op;
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gint ret;
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GType str_type;
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const gchar *str_result;
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} comparisons[] = {
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/* *INDENT-OFF* */
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{"foo,bar=(int)1", "foo,bar=(int)1", "compare", GST_VALUE_EQUAL, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)1", "is_subset", TRUE, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)1", "intersect", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)1"},
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{"foo,bar=(int)1", "foo,bar=(int)1", "union", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)1"},
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{"foo,bar=(int)[1,2]", "foo,bar=(int)1", "compare", GST_VALUE_UNORDERED, 0, NULL},
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{"foo,bar=(int)[1,2]", "foo,bar=(int)1", "is_subset", FALSE, 0, NULL},
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{"foo,bar=(int)[1,2]", "foo,bar=(int)1", "intersect", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)1"},
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{"foo,bar=(int)[1,2]", "foo,bar=(int)1", "union", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)[1,2]"},
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{"foo,bar=(int)1", "foo,bar=(int)[1,2]", "compare", GST_VALUE_UNORDERED, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)[1,2]", "is_subset", TRUE, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)[1,2]", "intersect", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)1"},
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{"foo,bar=(int)1", "foo,bar=(int)[1,2]", "union", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)[1,2]"},
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{"foo,bar=(int)1", "foo,bar=(int)2", "compare", GST_VALUE_UNORDERED, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)2", "is_subset", FALSE, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)2", "intersect", FALSE, 0, NULL},
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{"foo,bar=(int)1", "foo,bar=(int)2", "union", TRUE, GST_TYPE_STRUCTURE, "foo,bar=(int)[1,2]"},
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{"foo,bar=(int)1", "baz,bar=(int)1", "compare", GST_VALUE_UNORDERED, 0, NULL},
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{"foo,bar=(int)1", "baz,bar=(int)1", "is_subset", FALSE, 0, NULL},
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{"foo,bar=(int)1", "baz,bar=(int)1", "intersect", FALSE, 0, NULL},
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#if 0
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/* deserializing lists is not implemented (but this should still work!) */
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{"foo,bar=(int)1", "baz,bar=(int)1", "union", TRUE, G_TYPE_LIST, "{foo,bar=(int)1;, baz,bar=(int)1;}"},
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#endif
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/* *INDENT-ON* */
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};
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gint i;
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for (i = 0; i < G_N_ELEMENTS (comparisons); i++) {
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GstStructure *s1 = gst_structure_from_string (comparisons[i].str1, NULL);
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GstStructure *s2 = gst_structure_from_string (comparisons[i].str2, NULL);
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GValue v1 = G_VALUE_INIT, v2 = G_VALUE_INIT, v3 = G_VALUE_INIT;
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fail_unless (s1 != NULL);
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fail_unless (s2 != NULL);
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GST_DEBUG ("checking %s with structure1 %" GST_PTR_FORMAT " structure2 %"
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GST_PTR_FORMAT " is %d, %s", comparisons[i].op, s1, s2,
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comparisons[i].ret, comparisons[i].str_result);
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g_value_init (&v1, GST_TYPE_STRUCTURE);
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gst_value_set_structure (&v1, s1);
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g_value_init (&v2, GST_TYPE_STRUCTURE);
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gst_value_set_structure (&v2, s2);
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if (g_strcmp0 (comparisons[i].op, "compare") == 0) {
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fail_unless (gst_value_compare (&v1, &v2) == comparisons[i].ret);
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} else if (g_strcmp0 (comparisons[i].op, "is_subset") == 0) {
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fail_unless (gst_value_is_subset (&v1, &v2) == comparisons[i].ret);
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} else {
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if (g_strcmp0 (comparisons[i].op, "intersect") == 0) {
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fail_unless (gst_value_intersect (&v3, &v1, &v2) == comparisons[i].ret);
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} else if (g_strcmp0 (comparisons[i].op, "union") == 0) {
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fail_unless (gst_value_union (&v3, &v1, &v2) == comparisons[i].ret);
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}
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if (comparisons[i].ret) {
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GValue result = G_VALUE_INIT;
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gchar *str;
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str = gst_value_serialize (&v3);
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GST_LOG ("result %s", str);
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g_free (str);
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g_value_init (&result, comparisons[i].str_type);
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fail_unless (gst_value_deserialize (&result,
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comparisons[i].str_result));
|
||||
fail_unless (gst_value_compare (&result, &v3) == GST_VALUE_EQUAL);
|
||||
g_value_unset (&v3);
|
||||
g_value_unset (&result);
|
||||
}
|
||||
}
|
||||
|
||||
gst_structure_free (s1);
|
||||
gst_structure_free (s2);
|
||||
g_value_unset (&v1);
|
||||
g_value_unset (&v2);
|
||||
}
|
||||
}
|
||||
|
||||
GST_END_TEST;
|
||||
|
||||
static Suite *
|
||||
gst_value_suite (void)
|
||||
{
|
||||
|
|
@ -3160,6 +3318,9 @@ gst_value_suite (void)
|
|||
tcase_add_test (tc_chain, test_stepped_int_range_parsing);
|
||||
tcase_add_test (tc_chain, test_stepped_int_range_ops);
|
||||
tcase_add_test (tc_chain, test_flagset);
|
||||
tcase_add_test (tc_chain, test_structure_basic);
|
||||
tcase_add_test (tc_chain, test_structure_single_ops);
|
||||
tcase_add_test (tc_chain, test_structure_ops);
|
||||
|
||||
return s;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue