2 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
26 #include <gobject/gvaluecollector.h>
28 typedef struct _GstValueCompareInfo GstValueCompareInfo;
29 struct _GstValueCompareInfo {
31 GstValueCompareFunc func;
34 typedef struct _GstValueUnionInfo GstValueUnionInfo;
35 struct _GstValueUnionInfo {
38 GstValueUnionFunc func;
41 typedef struct _GstValueIntersectInfo GstValueIntersectInfo;
42 struct _GstValueIntersectInfo {
45 GstValueIntersectFunc func;
48 GType gst_type_fourcc;
49 GType gst_type_int_range;
50 GType gst_type_double_range;
53 GArray *gst_value_compare_funcs;
54 GArray *gst_value_union_funcs;
55 GArray *gst_value_intersect_funcs;
60 gst_value_init_list (GValue *value)
62 value->data[0].v_pointer = g_array_new (FALSE, TRUE, sizeof(GValue));
66 gst_value_list_array_copy (const GArray *src)
71 dest = g_array_sized_new (FALSE, TRUE, sizeof(GValue), src->len);
72 g_array_set_size (dest, src->len);
73 for (i = 0; i < src->len; i++) {
74 g_value_init (&g_array_index(dest, GValue, i), G_VALUE_TYPE (&g_array_index(src, GValue, i)));
75 g_value_copy (&g_array_index(src, GValue, i), &g_array_index(dest, GValue, i));
82 gst_value_copy_list (const GValue *src_value, GValue *dest_value)
84 dest_value->data[0].v_pointer = gst_value_list_array_copy ((GArray *) src_value->data[0].v_pointer);
88 gst_value_free_list (GValue *value)
91 GArray *src = (GArray *) value->data[0].v_pointer;
93 if ((value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS) == 0) {
94 for (i = 0; i < src->len; i++) {
95 g_value_unset (&g_array_index(src, GValue, i));
97 g_array_free (src, TRUE);
102 gst_value_list_peek_pointer (const GValue *value)
104 return value->data[0].v_pointer;
108 gst_value_collect_list (GValue *value, guint n_collect_values,
109 GTypeCValue *collect_values, guint collect_flags)
111 if (collect_flags & G_VALUE_NOCOPY_CONTENTS) {
112 value->data[0].v_pointer = collect_values[0].v_pointer;
113 value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
115 value->data[0].v_pointer = gst_value_list_array_copy ((GArray *) collect_values[0].v_pointer);
121 gst_value_lcopy_list (const GValue *value, guint n_collect_values,
122 GTypeCValue *collect_values, guint collect_flags)
124 GArray **dest = collect_values[0].v_pointer;
126 return g_strdup_printf ("value location for `%s' passed as NULL",
127 G_VALUE_TYPE_NAME (value));
128 if (!value->data[0].v_pointer)
129 return g_strdup_printf ("invalid value given for `%s'",
130 G_VALUE_TYPE_NAME (value));
131 if (collect_flags & G_VALUE_NOCOPY_CONTENTS) {
132 *dest = (GArray *) value->data[0].v_pointer;
134 *dest = gst_value_list_array_copy ((GArray *) value->data[0].v_pointer);
140 gst_value_list_prepend_value (GValue *value, const GValue *prepend_value)
142 g_return_if_fail (GST_VALUE_HOLDS_LIST (value));
144 g_array_prepend_vals ((GArray *) value->data[0].v_pointer, prepend_value, 1);
148 gst_value_list_append_value (GValue *value, const GValue *append_value)
150 g_return_if_fail (GST_VALUE_HOLDS_LIST (value));
152 g_array_append_vals ((GArray *) value->data[0].v_pointer, append_value, 1);
156 gst_value_list_get_size (const GValue *value)
158 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (value), 0);
160 return ((GArray *) value->data[0].v_pointer)->len;
164 gst_value_list_get_value (const GValue *value, guint index)
166 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (value), NULL);
167 g_return_val_if_fail (index < gst_value_list_get_size (value), NULL);
169 return (const GValue *) &g_array_index ((GArray *) value->data[0].v_pointer, GValue, index);
173 * gst_value_list_concat:
174 * @dest: an uninitialized #GValue to take the result
175 * @value1: first value to put into the union
176 * @value2: second value to put into the union
178 * Concatenates copies of value1 and value2 into a list. dest will be
179 * initialized to the type GST_TYPE_LIST.
182 gst_value_list_concat (GValue *dest, const GValue *value1, const GValue *value2)
184 guint i, value1_length, value2_length;
187 g_return_if_fail (dest != NULL);
188 g_return_if_fail (G_VALUE_TYPE (dest) == 0);
189 g_return_if_fail (G_IS_VALUE (value1));
190 g_return_if_fail (G_IS_VALUE (value2));
192 value1_length = (GST_VALUE_HOLDS_LIST (value1) ? gst_value_list_get_size (value1) : 1);
193 value2_length = (GST_VALUE_HOLDS_LIST (value2) ? gst_value_list_get_size (value2) : 1);
194 g_value_init (dest, GST_TYPE_LIST);
195 array = (GArray *) dest->data[0].v_pointer;
196 g_array_set_size (array, value1_length + value2_length);
198 if (GST_VALUE_HOLDS_LIST (value1)) {
199 for (i = 0; i < value1_length; i++) {
200 g_value_init (&g_array_index(array, GValue, i), G_VALUE_TYPE (gst_value_list_get_value (value1, i)));
201 g_value_copy (gst_value_list_get_value (value1, i), &g_array_index(array, GValue, i));
204 g_value_init (&g_array_index(array, GValue, 0), G_VALUE_TYPE (value1));
205 g_value_copy (value1, &g_array_index(array, GValue, 0));
208 if (GST_VALUE_HOLDS_LIST (value2)) {
209 for (i = 0; i < value2_length; i++) {
210 g_value_init (&g_array_index(array, GValue, i + value1_length), G_VALUE_TYPE (gst_value_list_get_value (value2, i)));
211 g_value_copy (gst_value_list_get_value (value2, i), &g_array_index(array, GValue, i + value1_length));
214 g_value_init (&g_array_index(array, GValue, value1_length), G_VALUE_TYPE (value2));
215 g_value_copy (value2, &g_array_index(array, GValue, value1_length));
222 gst_value_init_fourcc (GValue *value)
224 value->data[0].v_int = 0;
228 gst_value_copy_fourcc (const GValue *src_value, GValue *dest_value)
230 dest_value->data[0].v_int = src_value->data[0].v_int;
234 gst_value_collect_fourcc (GValue *value, guint n_collect_values,
235 GTypeCValue *collect_values, guint collect_flags)
237 value->data[0].v_int = collect_values[0].v_int;
243 gst_value_lcopy_fourcc (const GValue *value, guint n_collect_values,
244 GTypeCValue *collect_values, guint collect_flags)
246 guint32 *fourcc_p = collect_values[0].v_pointer;
249 return g_strdup_printf ("value location for `%s' passed as NULL",
250 G_VALUE_TYPE_NAME (value));
252 *fourcc_p = value->data[0].v_int;
258 gst_value_set_fourcc (GValue *value, guint32 fourcc)
260 g_return_if_fail (GST_VALUE_HOLDS_FOURCC (value));
262 value->data[0].v_int = fourcc;
266 gst_value_get_fourcc (const GValue *value)
268 g_return_val_if_fail (GST_VALUE_HOLDS_FOURCC (value), 0);
270 return value->data[0].v_int;
276 gst_value_init_int_range (GValue *value)
278 value->data[0].v_int = 0;
279 value->data[1].v_int = 0;
283 gst_value_copy_int_range (const GValue *src_value, GValue *dest_value)
285 dest_value->data[0].v_int = src_value->data[0].v_int;
286 dest_value->data[1].v_int = src_value->data[1].v_int;
290 gst_value_collect_int_range (GValue *value, guint n_collect_values,
291 GTypeCValue *collect_values, guint collect_flags)
294 value->data[0].v_int = collect_values[0].v_int;
295 value->data[1].v_int = collect_values[1].v_int;
301 gst_value_lcopy_int_range (const GValue *value, guint n_collect_values,
302 GTypeCValue *collect_values, guint collect_flags)
304 guint32 *int_range_start = collect_values[0].v_pointer;
305 guint32 *int_range_end = collect_values[1].v_pointer;
307 if (!int_range_start)
308 return g_strdup_printf ("start value location for `%s' passed as NULL",
309 G_VALUE_TYPE_NAME (value));
311 return g_strdup_printf ("end value location for `%s' passed as NULL",
312 G_VALUE_TYPE_NAME (value));
314 *int_range_start = value->data[0].v_int;
315 *int_range_end = value->data[1].v_int;
321 gst_value_set_int_range (GValue *value, int start, int end)
323 g_return_if_fail (GST_VALUE_HOLDS_INT_RANGE (value));
325 value->data[0].v_int = start;
326 value->data[1].v_int = end;
330 gst_value_get_int_range_min (const GValue *value)
332 g_return_val_if_fail (GST_VALUE_HOLDS_INT_RANGE (value), 0);
334 return value->data[0].v_int;
338 gst_value_get_int_range_max (const GValue *value)
340 g_return_val_if_fail (GST_VALUE_HOLDS_INT_RANGE (value), 0);
342 return value->data[1].v_int;
348 gst_value_init_double_range (GValue *value)
350 value->data[0].v_double = 0;
351 value->data[1].v_double = 0;
355 gst_value_copy_double_range (const GValue *src_value, GValue *dest_value)
357 dest_value->data[0].v_double = src_value->data[0].v_double;
358 dest_value->data[1].v_double = src_value->data[1].v_double;
362 gst_value_collect_double_range (GValue *value, guint n_collect_values,
363 GTypeCValue *collect_values, guint collect_flags)
365 value->data[0].v_double = collect_values[0].v_double;
366 value->data[1].v_double = collect_values[1].v_double;
372 gst_value_lcopy_double_range (const GValue *value, guint n_collect_values,
373 GTypeCValue *collect_values, guint collect_flags)
375 gdouble *double_range_start = collect_values[0].v_pointer;
376 gdouble *double_range_end = collect_values[1].v_pointer;
378 if (!double_range_start)
379 return g_strdup_printf ("start value location for `%s' passed as NULL",
380 G_VALUE_TYPE_NAME (value));
381 if (!double_range_end)
382 return g_strdup_printf ("end value location for `%s' passed as NULL",
383 G_VALUE_TYPE_NAME (value));
385 *double_range_start = value->data[0].v_double;
386 *double_range_end = value->data[1].v_double;
392 gst_value_set_double_range (GValue *value, double start, double end)
394 g_return_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value));
396 value->data[0].v_double = start;
397 value->data[1].v_double = end;
401 gst_value_get_double_range_min (const GValue *value)
403 g_return_val_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value), 0);
405 return value->data[0].v_double;
409 gst_value_get_double_range_max (const GValue *value)
411 g_return_val_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value), 0);
413 return value->data[1].v_double;
419 gst_value_set_caps (GValue *value, const GstCaps *caps)
421 g_return_if_fail (GST_VALUE_HOLDS_CAPS (value));
423 value->data[0].v_pointer = gst_caps_copy (caps);
427 gst_value_get_caps (const GValue *value)
429 g_return_val_if_fail (GST_VALUE_HOLDS_CAPS (value), 0);
431 return value->data[0].v_pointer;
437 gst_value_transform_fourcc_string (const GValue *src_value,
440 guint32 fourcc = src_value->data[0].v_int;
442 if (g_ascii_isprint ((fourcc>>0) & 0xff) &&
443 g_ascii_isprint ((fourcc>>8) & 0xff) &&
444 g_ascii_isprint ((fourcc>>16) & 0xff) &&
445 g_ascii_isprint ((fourcc>>24) & 0xff)){
446 dest_value->data[0].v_pointer = g_strdup_printf(
447 GST_FOURCC_FORMAT, GST_FOURCC_ARGS(fourcc));
449 dest_value->data[0].v_pointer = g_strdup_printf("0x%08x", fourcc);
454 gst_value_transform_int_range_string (const GValue *src_value,
457 dest_value->data[0].v_pointer = g_strdup_printf("[%d,%d]",
458 (int)src_value->data[0].v_int, (int)src_value->data[1].v_int);
462 gst_value_transform_double_range_string (const GValue *src_value,
465 dest_value->data[0].v_pointer = g_strdup_printf("[%g,%g]",
466 src_value->data[0].v_double, src_value->data[1].v_double);
470 gst_value_transform_list_string (const GValue *src_value,
479 array = src_value->data[0].v_pointer;
481 s = g_string_new("{ ");
482 for(i=0;i<array->len;i++){
483 list_value = &g_array_index(array, GValue, i);
486 g_string_append (s, ", ");
488 list_s = g_strdup_value_contents (list_value);
489 g_string_append (s, list_s);
492 g_string_append (s, " }");
494 dest_value->data[0].v_pointer = g_string_free (s, FALSE);
497 /* comparison functions */
500 gst_value_compare_boolean (const GValue *value1, const GValue *value2)
502 /* FIXME: ds, can we assume that those values are only TRUE and FALSE? */
503 if (value1->data[0].v_int == value2->data[0].v_int)
504 return GST_VALUE_EQUAL;
505 return GST_VALUE_UNORDERED;
509 gst_value_compare_int (const GValue *value1, const GValue *value2)
511 if (value1->data[0].v_int > value2->data[0].v_int)
512 return GST_VALUE_GREATER_THAN;
513 if (value1->data[0].v_int < value2->data[0].v_int)
514 return GST_VALUE_LESS_THAN;
515 return GST_VALUE_EQUAL;
519 gst_value_compare_double (const GValue *value1, const GValue *value2)
521 if (value1->data[0].v_double > value2->data[0].v_double)
522 return GST_VALUE_GREATER_THAN;
523 if (value1->data[0].v_double < value2->data[0].v_double)
524 return GST_VALUE_LESS_THAN;
525 if (value1->data[0].v_double == value2->data[0].v_double)
526 return GST_VALUE_EQUAL;
527 return GST_VALUE_UNORDERED;
531 gst_value_compare_float (const GValue *value1, const GValue *value2)
533 if (value1->data[0].v_float > value2->data[0].v_float)
534 return GST_VALUE_GREATER_THAN;
535 if (value1->data[0].v_float < value2->data[0].v_float)
536 return GST_VALUE_LESS_THAN;
537 if (value1->data[0].v_float == value2->data[0].v_float)
538 return GST_VALUE_EQUAL;
539 return GST_VALUE_UNORDERED;
543 gst_value_compare_string (const GValue *value1, const GValue *value2)
545 int x = strcmp(value1->data[0].v_pointer, value2->data[0].v_pointer);
546 if(x<0) return GST_VALUE_LESS_THAN;
547 if(x>0) return GST_VALUE_GREATER_THAN;
548 return GST_VALUE_EQUAL;
552 gst_value_compare_fourcc (const GValue *value1, const GValue *value2)
554 if (value2->data[0].v_int == value1->data[0].v_int) return GST_VALUE_EQUAL;
555 return GST_VALUE_UNORDERED;
559 gst_value_compare_int_range (const GValue *value1, const GValue *value2)
561 if (value2->data[0].v_int == value1->data[0].v_int &&
562 value2->data[0].v_int == value1->data[0].v_int) return GST_VALUE_EQUAL;
563 return GST_VALUE_UNORDERED;
567 gst_value_compare_double_range (const GValue *value1, const GValue *value2)
569 if (value2->data[0].v_double == value1->data[0].v_double &&
570 value2->data[0].v_double == value1->data[0].v_double)
571 return GST_VALUE_EQUAL;
572 return GST_VALUE_UNORDERED;
576 gst_value_compare_list (const GValue *value1, const GValue *value2)
579 GArray *array1 = value1->data[0].v_pointer;
580 GArray *array2 = value2->data[0].v_pointer;
584 if (array1->len != array2->len) return GST_VALUE_UNORDERED;
586 for(i=0;i<array1->len;i++){
587 v1 = &g_array_index (array1, GValue, i);
588 for(j=0;j<array1->len;j++){
589 v2 = &g_array_index (array2, GValue, j);
590 if (gst_value_compare(v1, v2) == GST_VALUE_EQUAL) break;
592 if (j==array1->len) {
593 return GST_VALUE_UNORDERED;
597 return GST_VALUE_EQUAL;
601 gst_value_can_compare (const GValue *value1, const GValue *value2)
603 GstValueCompareInfo *compare_info;
606 if(G_VALUE_TYPE(value1) != G_VALUE_TYPE(value2))return FALSE;
607 for(i=0;i<gst_value_compare_funcs->len;i++){
608 compare_info = &g_array_index(gst_value_compare_funcs,
609 GstValueCompareInfo, i);
610 if(compare_info->type == G_VALUE_TYPE(value1)) return TRUE;
617 gst_value_compare (const GValue *value1, const GValue *value2)
619 GstValueCompareInfo *compare_info;
622 if (G_VALUE_TYPE(value1) != G_VALUE_TYPE(value2)) return GST_VALUE_UNORDERED;
624 for(i=0;i<gst_value_compare_funcs->len;i++){
625 compare_info = &g_array_index(gst_value_compare_funcs,
626 GstValueCompareInfo, i);
627 if(compare_info->type != G_VALUE_TYPE(value1)) continue;
629 return compare_info->func(value1, value2);
632 g_critical("unable to compare values of type %s\n",
633 g_type_name (G_VALUE_TYPE (value1)));
634 return GST_VALUE_UNORDERED;
638 gst_value_register_compare_func (GType type, GstValueCompareFunc func)
640 GstValueCompareInfo compare_info;
642 compare_info.type = type;
643 compare_info.func = func;
645 g_array_append_val(gst_value_compare_funcs, compare_info);
651 gst_value_can_union (const GValue *value1, const GValue *value2)
653 GstValueUnionInfo *union_info;
656 for(i=0;i<gst_value_union_funcs->len;i++){
657 union_info = &g_array_index(gst_value_union_funcs, GstValueUnionInfo, i);
658 if(union_info->type1 == G_VALUE_TYPE(value1) &&
659 union_info->type2 == G_VALUE_TYPE(value2)) return TRUE;
666 gst_value_union (GValue *dest, const GValue *value1, const GValue *value2)
668 GstValueUnionInfo *union_info;
671 for(i=0;i<gst_value_union_funcs->len;i++){
672 union_info = &g_array_index(gst_value_union_funcs, GstValueUnionInfo, i);
673 if(union_info->type1 == G_VALUE_TYPE(value1) &&
674 union_info->type2 == G_VALUE_TYPE(value2)) {
675 return union_info->func(dest, value1, value2);
679 gst_value_list_concat (dest, value1, value2);
684 gst_value_register_union_func (GType type1, GType type2, GstValueUnionFunc func)
686 GstValueUnionInfo union_info;
688 union_info.type1 = type1;
689 union_info.type2 = type2;
690 union_info.func = func;
692 g_array_append_val(gst_value_union_funcs, union_info);
698 gst_value_intersect_int_int_range (GValue *dest, const GValue *src1,
701 g_return_val_if_fail(G_VALUE_TYPE(src1) == G_TYPE_INT, FALSE);
702 g_return_val_if_fail(G_VALUE_TYPE(src2) == GST_TYPE_INT_RANGE, FALSE);
704 if (src2->data[0].v_int <= src1->data[0].v_int &&
705 src2->data[1].v_int >= src1->data[0].v_int){
706 g_value_init(dest, G_TYPE_INT);
707 g_value_copy(src1, dest);
715 gst_value_intersect_int_range_int_range (GValue *dest, const GValue *src1,
721 g_return_val_if_fail(G_VALUE_TYPE(src1) == GST_TYPE_INT_RANGE, FALSE);
722 g_return_val_if_fail(G_VALUE_TYPE(src2) == GST_TYPE_INT_RANGE, FALSE);
724 min = MAX(src1->data[0].v_int, src2->data[0].v_int);
725 max = MIN(src1->data[1].v_int, src2->data[1].v_int);
728 g_value_init(dest, GST_TYPE_INT_RANGE);
729 gst_value_set_int_range(dest, min, max);
733 g_value_init(dest, G_TYPE_INT);
734 g_value_set_int(dest, min);
742 gst_value_intersect_double_double_range (GValue *dest, const GValue *src1,
745 g_return_val_if_fail(G_VALUE_TYPE(src1) == G_TYPE_DOUBLE, FALSE);
746 g_return_val_if_fail(G_VALUE_TYPE(src2) == GST_TYPE_DOUBLE_RANGE, FALSE);
748 if (src2->data[0].v_double <= src1->data[0].v_double &&
749 src2->data[1].v_double >= src1->data[0].v_double){
750 g_value_init(dest, G_TYPE_DOUBLE);
751 g_value_copy(src1, dest);
759 gst_value_intersect_double_range_double_range (GValue *dest, const GValue *src1,
765 g_return_val_if_fail(G_VALUE_TYPE(src1) == GST_TYPE_DOUBLE_RANGE, FALSE);
766 g_return_val_if_fail(G_VALUE_TYPE(src2) == GST_TYPE_DOUBLE_RANGE, FALSE);
768 min = MAX(src1->data[0].v_double, src2->data[0].v_double);
769 max = MIN(src1->data[1].v_double, src2->data[1].v_double);
772 g_value_init(dest, GST_TYPE_DOUBLE_RANGE);
773 gst_value_set_double_range(dest, min, max);
777 g_value_init(dest, G_TYPE_DOUBLE);
778 g_value_set_int(dest, min);
786 gst_value_intersect_list (GValue *dest, const GValue *value1, const GValue *value2)
789 GValue intersection = { 0, };
790 gboolean ret = FALSE;
792 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (value1), FALSE);
794 size = gst_value_list_get_size (value1);
795 for (i = 0; i < size; i++) {
796 const GValue *cur = gst_value_list_get_value (value1, i);
798 if (gst_value_intersect (&intersection, cur, value2)) {
801 g_value_init (dest, G_VALUE_TYPE(&intersection));
802 g_value_copy (dest, &intersection);
804 } else if (GST_VALUE_HOLDS_LIST (dest)) {
805 gst_value_list_append_value (dest, &intersection);
809 g_value_init (&temp, G_VALUE_TYPE(dest));
810 g_value_copy (dest, &temp);
811 g_value_unset (dest);
812 gst_value_list_concat (dest, &temp, &intersection);
814 g_value_unset (&intersection);
822 gst_value_can_intersect (const GValue *value1, const GValue *value2)
824 GstValueIntersectInfo *intersect_info;
828 if (GST_VALUE_HOLDS_LIST (value1) ||
829 GST_VALUE_HOLDS_LIST (value2))
832 for(i=0;i<gst_value_intersect_funcs->len;i++){
833 intersect_info = &g_array_index(gst_value_intersect_funcs,
834 GstValueIntersectInfo, i);
835 if(intersect_info->type1 == G_VALUE_TYPE(value1) &&
836 intersect_info->type2 == G_VALUE_TYPE(value2)) return TRUE;
839 return gst_value_can_compare (value1, value2);
843 gst_value_intersect (GValue *dest, const GValue *value1, const GValue *value2)
845 GstValueIntersectInfo *intersect_info;
849 /* special cases first */
850 if (GST_VALUE_HOLDS_LIST (value1))
851 return gst_value_intersect_list (dest, value1, value2);
852 if (GST_VALUE_HOLDS_LIST (value2))
853 return gst_value_intersect_list (dest, value2, value1);
855 for(i=0;i<gst_value_intersect_funcs->len;i++){
856 intersect_info = &g_array_index(gst_value_intersect_funcs,
857 GstValueIntersectInfo, i);
858 if(intersect_info->type1 == G_VALUE_TYPE(value1) &&
859 intersect_info->type2 == G_VALUE_TYPE(value2)) {
860 ret = intersect_info->func(dest, value1, value2);
863 if(intersect_info->type1 == G_VALUE_TYPE(value2) &&
864 intersect_info->type2 == G_VALUE_TYPE(value1)) {
865 ret = intersect_info->func(dest, value2, value1);
870 if(gst_value_compare(value1, value2) == GST_VALUE_EQUAL){
871 g_value_init(dest, G_VALUE_TYPE(value1));
872 g_value_copy(value1, dest);
880 gst_value_register_intersect_func (GType type1, GType type2,
881 GstValueIntersectFunc func)
883 GstValueIntersectInfo intersect_info;
885 intersect_info.type1 = type1;
886 intersect_info.type2 = type2;
887 intersect_info.func = func;
889 g_array_append_val(gst_value_intersect_funcs, intersect_info);
893 _gst_value_initialize (void)
907 //const GTypeFundamentalInfo finfo = { G_TYPE_FLAG_DERIVABLE, };
910 static const GTypeValueTable value_table = {
911 gst_value_init_fourcc,
913 gst_value_copy_fourcc,
916 gst_value_collect_fourcc,
918 gst_value_lcopy_fourcc
920 info.value_table = &value_table;
921 gst_type_fourcc = g_type_register_static (G_TYPE_BOXED, "GstFourcc", &info, 0);
925 static const GTypeValueTable value_table = {
926 gst_value_init_int_range,
928 gst_value_copy_int_range,
931 gst_value_collect_int_range,
933 gst_value_lcopy_int_range
935 info.value_table = &value_table;
936 gst_type_int_range = g_type_register_static (G_TYPE_BOXED, "GstIntRange", &info, 0);
940 static const GTypeValueTable value_table = {
941 gst_value_init_double_range,
943 gst_value_copy_double_range,
946 gst_value_collect_double_range,
948 gst_value_lcopy_double_range
950 info.value_table = &value_table;
951 gst_type_double_range = g_type_register_static (G_TYPE_BOXED, "GstDoubleRange", &info, 0);
955 static const GTypeValueTable value_table = {
959 gst_value_list_peek_pointer,
961 gst_value_collect_list,
965 info.value_table = &value_table;
966 gst_type_list = g_type_register_static (G_TYPE_BOXED, "GstValueList", &info, 0);
969 g_value_register_transform_func (GST_TYPE_FOURCC, G_TYPE_STRING,
970 gst_value_transform_fourcc_string);
971 g_value_register_transform_func (GST_TYPE_INT_RANGE, G_TYPE_STRING,
972 gst_value_transform_int_range_string);
973 g_value_register_transform_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_STRING,
974 gst_value_transform_double_range_string);
975 g_value_register_transform_func (GST_TYPE_LIST, G_TYPE_STRING,
976 gst_value_transform_list_string);
978 gst_value_compare_funcs = g_array_new(FALSE, FALSE,
979 sizeof(GstValueCompareInfo));
981 gst_value_register_compare_func (G_TYPE_BOOLEAN, gst_value_compare_boolean);
982 gst_value_register_compare_func (G_TYPE_INT, gst_value_compare_int);
983 gst_value_register_compare_func (G_TYPE_FLOAT, gst_value_compare_float);
984 gst_value_register_compare_func (G_TYPE_DOUBLE, gst_value_compare_double);
985 gst_value_register_compare_func (G_TYPE_STRING, gst_value_compare_string);
986 gst_value_register_compare_func (GST_TYPE_FOURCC, gst_value_compare_fourcc);
987 gst_value_register_compare_func (GST_TYPE_INT_RANGE, gst_value_compare_int_range);
988 gst_value_register_compare_func (GST_TYPE_DOUBLE_RANGE, gst_value_compare_double_range);
989 gst_value_register_compare_func (GST_TYPE_LIST, gst_value_compare_list);
991 gst_value_union_funcs = g_array_new(FALSE, FALSE,
992 sizeof(GstValueUnionInfo));
994 gst_value_intersect_funcs = g_array_new(FALSE, FALSE,
995 sizeof(GstValueIntersectInfo));
997 gst_value_register_intersect_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
998 gst_value_intersect_int_int_range);
999 gst_value_register_intersect_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
1000 gst_value_intersect_int_range_int_range);
1001 gst_value_register_intersect_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
1002 gst_value_intersect_double_double_range);
1003 gst_value_register_intersect_func (GST_TYPE_DOUBLE_RANGE, GST_TYPE_DOUBLE_RANGE,
1004 gst_value_intersect_double_range_double_range);