value: Remove set-style bitmask intersection/union/subtraction functions

Set operations on the bitmasks don't make much sense and result
in invalid caps when used as a channel-mask. They are now handled
exactly like integers.

This functionality was not used anywhere except for tests.

https://bugzilla.gnome.org/show_bug.cgi?id=691370

gst/gstvalue.c

@@ -4756,11 +4756,8 @@ gst_value_register_subtract_func (GType minuend_type, GType subtrahend_type,
 {
   GstValueSubtractInfo info;
 
-  /* one type must be unfixed, other subtractions can be done as comparisons,
+  g_return_if_fail (!gst_type_is_fixed (minuend_type)
-   * special case: bitmasks */
+      || !gst_type_is_fixed (subtrahend_type));
-  if (minuend_type != GST_TYPE_BITMASK)
-    g_return_if_fail (!gst_type_is_fixed (minuend_type)
-        || !gst_type_is_fixed (subtrahend_type));
 
   info.minuend = minuend_type;
   info.subtrahend = subtrahend_type;
@@ -5649,58 +5646,6 @@ gst_value_transform_bitmask_uint64 (const GValue * src_value,
   dest_value->data[0].v_uint64 = src_value->data[0].v_uint64;
 }
 
-static gboolean
-gst_value_intersect_bitmask_bitmask (GValue * dest, const GValue * src1,
-    const GValue * src2)
-{
-  guint64 s1, s2;
-
-  s1 = gst_value_get_bitmask (src1);
-  s2 = gst_value_get_bitmask (src2);
-
-  if (dest) {
-    g_value_init (dest, GST_TYPE_BITMASK);
-    gst_value_set_bitmask (dest, s1 & s2);
-  }
-
-  return TRUE;
-}
-
-static gboolean
-gst_value_union_bitmask_bitmask (GValue * dest, const GValue * src1,
-    const GValue * src2)
-{
-  guint64 s1, s2;
-
-  s1 = gst_value_get_bitmask (src1);
-  s2 = gst_value_get_bitmask (src2);
-
-  g_value_init (dest, GST_TYPE_BITMASK);
-  gst_value_set_bitmask (dest, s1 | s2);
-
-  return TRUE;
-}
-
-static gboolean
-gst_value_subtract_bitmask_bitmask (GValue * dest,
-    const GValue * minuend, const GValue * subtrahend)
-{
-  guint64 m, s, r;
-
-  g_return_val_if_fail (GST_VALUE_HOLDS_BITMASK (minuend), FALSE);
-  g_return_val_if_fail (GST_VALUE_HOLDS_BITMASK (subtrahend), FALSE);
-
-  m = minuend->data[0].v_uint64;
-  s = subtrahend->data[0].v_uint64;
-  r = m & (~s);
-
-  if (dest) {
-    g_value_init (dest, GST_TYPE_BITMASK);
-    gst_value_set_bitmask (dest, r);
-  }
-  return (r != 0);
-}
-
 static gint
 gst_value_compare_bitmask (const GValue * value1, const GValue * value2)
 {
@@ -6181,8 +6126,6 @@ _priv_gst_value_initialize (void)
   gst_value_register_intersect_func (GST_TYPE_FRACTION_RANGE,
       GST_TYPE_FRACTION_RANGE,
       gst_value_intersect_fraction_range_fraction_range);
-  gst_value_register_intersect_func (GST_TYPE_BITMASK,
-      GST_TYPE_BITMASK, gst_value_intersect_bitmask_bitmask);
 
   gst_value_register_subtract_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
       gst_value_subtract_int_int_range);
@@ -6209,8 +6152,6 @@ _priv_gst_value_initialize (void)
   gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE,
       GST_TYPE_FRACTION_RANGE,
       gst_value_subtract_fraction_range_fraction_range);
-  gst_value_register_subtract_func (GST_TYPE_BITMASK,
-      GST_TYPE_BITMASK, gst_value_subtract_bitmask_bitmask);
 
   /* see bug #317246, #64994, #65041 */
   {
@@ -6223,8 +6164,6 @@ _priv_gst_value_initialize (void)
       gst_value_union_int_int_range);
   gst_value_register_union_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
       gst_value_union_int_range_int_range);
-  gst_value_register_union_func (GST_TYPE_BITMASK,
-      GST_TYPE_BITMASK, gst_value_union_bitmask_bitmask);
 
 #if 0
   /* Implement these if needed */

tests/check/gst/gstvalue.c

@@ -810,16 +810,6 @@ GST_START_TEST (test_value_intersect)
   g_value_unset (&src1);
   g_value_unset (&src2);
   g_value_unset (&dest);
-
-  g_value_init (&src1, GST_TYPE_BITMASK);
-  gst_value_set_bitmask (&src1, 0xf00f);
-  g_value_init (&src2, GST_TYPE_BITMASK);
-  gst_value_set_bitmask (&src2, 0xff00);
-  ret = gst_value_intersect (&dest, &src1, &src2);
-  fail_unless (ret == TRUE);
-  fail_unless_equals_uint64 (0xf000, gst_value_get_bitmask (&dest));
-  g_value_unset (&src1);
-  g_value_unset (&src2);
 }
 
 GST_END_TEST;
@@ -1919,27 +1909,6 @@ GST_START_TEST (test_value_subtract_fraction_list)
 
 GST_END_TEST;
 
-GST_START_TEST (test_value_subtract_bitmask)
-{
-  GValue result = { 0 };
-  GValue src1 = { 0 };
-  GValue src2 = { 0 };
-
-  /* Subtract 1/4 from 1/2 */
-  g_value_init (&src1, GST_TYPE_BITMASK);
-  g_value_init (&src2, GST_TYPE_BITMASK);
-  gst_value_set_bitmask (&src1, 0xffff);
-  gst_value_set_bitmask (&src2, 0xff00);
-  fail_unless (gst_value_subtract (&result, &src1, &src2) == TRUE);
-  fail_unless_equals_uint64 (0x00ff, gst_value_get_bitmask (&result));
-
-  g_value_unset (&src1);
-  g_value_unset (&src2);
-  g_value_unset (&result);
-}
-
-GST_END_TEST;
-
 GST_START_TEST (test_date)
 {
   GstStructure *s;
@@ -2868,7 +2837,6 @@ gst_value_suite (void)
   tcase_add_test (tc_chain, test_value_subtract_fraction);
   tcase_add_test (tc_chain, test_value_subtract_fraction_range);
   tcase_add_test (tc_chain, test_value_subtract_fraction_list);
-  tcase_add_test (tc_chain, test_value_subtract_bitmask);
   tcase_add_test (tc_chain, test_date);
   tcase_add_test (tc_chain, test_date_time);
   tcase_add_test (tc_chain, test_fraction_range);