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.
22 * @short_description: GValue implementations specific
25 * GValue implementations specific to GStreamer.
27 * Note that operations on the same #GValue from multiple threads may lead to
28 * undefined behaviour.
30 * Last reviewed on 2008-03-11 (0.10.18)
42 #include "gst_private.h"
43 #include "glib-compat-private.h"
45 #include <gobject/gvaluecollector.h>
48 typedef struct _GstValueUnionInfo GstValueUnionInfo;
49 struct _GstValueUnionInfo
53 GstValueUnionFunc func;
56 typedef struct _GstValueIntersectInfo GstValueIntersectInfo;
57 struct _GstValueIntersectInfo
61 GstValueIntersectFunc func;
64 typedef struct _GstValueSubtractInfo GstValueSubtractInfo;
65 struct _GstValueSubtractInfo
69 GstValueSubtractFunc func;
72 #define FUNDAMENTAL_TYPE_ID_MAX \
73 (G_TYPE_FUNDAMENTAL_MAX >> G_TYPE_FUNDAMENTAL_SHIFT)
74 #define FUNDAMENTAL_TYPE_ID(type) \
75 ((type) >> G_TYPE_FUNDAMENTAL_SHIFT)
77 #define VALUE_LIST_SIZE(v) (((GArray *) (v)->data[0].v_pointer)->len)
78 #define VALUE_LIST_GET_VALUE(v, index) ((const GValue *) &g_array_index ((GArray *) (v)->data[0].v_pointer, GValue, (index)))
80 static GArray *gst_value_table;
81 static GHashTable *gst_value_hash;
82 static GstValueTable *gst_value_tables_fundamental[FUNDAMENTAL_TYPE_ID_MAX + 1];
83 static GArray *gst_value_union_funcs;
84 static GArray *gst_value_intersect_funcs;
85 static GArray *gst_value_subtract_funcs;
87 /* Forward declarations */
88 static gchar *gst_value_serialize_fraction (const GValue * value);
90 static GstValueCompareFunc gst_value_get_compare_func (const GValue * value1);
91 static gint gst_value_compare_with_func (const GValue * value1,
92 const GValue * value2, GstValueCompareFunc compare);
94 static gchar *gst_string_wrap (const gchar * s);
95 static gchar *gst_string_take_and_wrap (gchar * s);
96 static gchar *gst_string_unwrap (const gchar * s);
98 static inline GstValueTable *
99 gst_value_hash_lookup_type (GType type)
101 if (G_LIKELY (G_TYPE_IS_FUNDAMENTAL (type)))
102 return gst_value_tables_fundamental[FUNDAMENTAL_TYPE_ID (type)];
104 return g_hash_table_lookup (gst_value_hash, (gpointer) type);
108 gst_value_hash_add_type (GType type, const GstValueTable * table)
110 if (G_TYPE_IS_FUNDAMENTAL (type))
111 gst_value_tables_fundamental[FUNDAMENTAL_TYPE_ID (type)] = (gpointer) table;
113 g_hash_table_insert (gst_value_hash, (gpointer) type, (gpointer) table);
120 /* two helper functions to serialize/stringify any type of list
121 * regular lists are done with { }, arrays with < >
124 gst_value_serialize_any_list (const GValue * value, const gchar * begin,
128 GArray *array = value->data[0].v_pointer;
132 guint alen = array->len;
134 /* estimate minimum string length to minimise re-allocs in GString */
135 s = g_string_sized_new (2 + (6 * alen) + 2);
136 g_string_append (s, begin);
137 for (i = 0; i < alen; i++) {
138 v = &g_array_index (array, GValue, i);
139 s_val = gst_value_serialize (v);
140 g_string_append (s, s_val);
143 g_string_append_len (s, ", ", 2);
146 g_string_append (s, end);
147 return g_string_free (s, FALSE);
151 gst_value_transform_any_list_string (const GValue * src_value,
152 GValue * dest_value, const gchar * begin, const gchar * end)
161 array = src_value->data[0].v_pointer;
164 /* estimate minimum string length to minimise re-allocs in GString */
165 s = g_string_sized_new (2 + (10 * alen) + 2);
166 g_string_append (s, begin);
167 for (i = 0; i < alen; i++) {
168 list_value = &g_array_index (array, GValue, i);
171 g_string_append_len (s, ", ", 2);
173 list_s = g_strdup_value_contents (list_value);
174 g_string_append (s, list_s);
177 g_string_append (s, end);
179 dest_value->data[0].v_pointer = g_string_free (s, FALSE);
183 * helper function to see if a type is fixed. Is used internally here and
184 * there. Do not export, since it doesn't work for types where the content
185 * decides the fixedness (e.g. GST_TYPE_ARRAY).
188 gst_type_is_fixed (GType type)
190 /* the basic int, string, double types */
191 if (type <= G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
194 /* our fundamental types that are certainly not fixed */
195 if (type == GST_TYPE_INT_RANGE || type == GST_TYPE_DOUBLE_RANGE ||
196 type == GST_TYPE_INT64_RANGE ||
197 type == GST_TYPE_LIST || type == GST_TYPE_FRACTION_RANGE) {
200 /* other (boxed) types that are fixed */
201 if (type == GST_TYPE_BUFFER) {
205 if (G_TYPE_IS_FUNDAMENTAL (type) || G_TYPE_FUNDAMENTAL (type) <=
206 G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
213 /* GValue functions usable for both regular lists and arrays */
215 gst_value_init_list_or_array (GValue * value)
217 value->data[0].v_pointer = g_array_new (FALSE, TRUE, sizeof (GValue));
221 copy_garray_of_gstvalue (const GArray * src)
227 dest = g_array_sized_new (FALSE, TRUE, sizeof (GValue), len);
228 g_array_set_size (dest, len);
229 for (i = 0; i < len; i++) {
230 gst_value_init_and_copy (&g_array_index (dest, GValue, i),
231 &g_array_index (src, GValue, i));
238 gst_value_copy_list_or_array (const GValue * src_value, GValue * dest_value)
240 dest_value->data[0].v_pointer =
241 copy_garray_of_gstvalue ((GArray *) src_value->data[0].v_pointer);
245 gst_value_free_list_or_array (GValue * value)
248 GArray *src = (GArray *) value->data[0].v_pointer;
251 if ((value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS) == 0) {
252 for (i = 0; i < len; i++) {
253 g_value_unset (&g_array_index (src, GValue, i));
255 g_array_free (src, TRUE);
260 gst_value_list_or_array_peek_pointer (const GValue * value)
262 return value->data[0].v_pointer;
266 gst_value_collect_list_or_array (GValue * value, guint n_collect_values,
267 GTypeCValue * collect_values, guint collect_flags)
269 if (collect_flags & G_VALUE_NOCOPY_CONTENTS) {
270 value->data[0].v_pointer = collect_values[0].v_pointer;
271 value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
273 value->data[0].v_pointer =
274 copy_garray_of_gstvalue ((GArray *) collect_values[0].v_pointer);
280 gst_value_lcopy_list_or_array (const GValue * value, guint n_collect_values,
281 GTypeCValue * collect_values, guint collect_flags)
283 GArray **dest = collect_values[0].v_pointer;
286 return g_strdup_printf ("value location for `%s' passed as NULL",
287 G_VALUE_TYPE_NAME (value));
288 if (!value->data[0].v_pointer)
289 return g_strdup_printf ("invalid value given for `%s'",
290 G_VALUE_TYPE_NAME (value));
291 if (collect_flags & G_VALUE_NOCOPY_CONTENTS) {
292 *dest = (GArray *) value->data[0].v_pointer;
294 *dest = copy_garray_of_gstvalue ((GArray *) value->data[0].v_pointer);
300 * gst_value_list_append_value:
301 * @value: a #GValue of type #GST_TYPE_LIST
302 * @append_value: the value to append
304 * Appends @append_value to the GstValueList in @value.
307 gst_value_list_append_value (GValue * value, const GValue * append_value)
311 g_return_if_fail (GST_VALUE_HOLDS_LIST (value));
312 g_return_if_fail (G_IS_VALUE (append_value));
314 gst_value_init_and_copy (&val, append_value);
315 g_array_append_vals ((GArray *) value->data[0].v_pointer, &val, 1);
319 * gst_value_list_prepend_value:
320 * @value: a #GValue of type #GST_TYPE_LIST
321 * @prepend_value: the value to prepend
323 * Prepends @prepend_value to the GstValueList in @value.
326 gst_value_list_prepend_value (GValue * value, const GValue * prepend_value)
330 g_return_if_fail (GST_VALUE_HOLDS_LIST (value));
331 g_return_if_fail (G_IS_VALUE (prepend_value));
333 gst_value_init_and_copy (&val, prepend_value);
334 g_array_prepend_vals ((GArray *) value->data[0].v_pointer, &val, 1);
338 * gst_value_list_concat:
339 * @dest: (out caller-allocates): an uninitialized #GValue to take the result
343 * Concatenates copies of @value1 and @value2 into a list. Values that are not
344 * of type #GST_TYPE_LIST are treated as if they were lists of length 1.
345 * @dest will be initialized to the type #GST_TYPE_LIST.
348 gst_value_list_concat (GValue * dest, const GValue * value1,
349 const GValue * value2)
351 guint i, value1_length, value2_length;
354 g_return_if_fail (dest != NULL);
355 g_return_if_fail (G_VALUE_TYPE (dest) == 0);
356 g_return_if_fail (G_IS_VALUE (value1));
357 g_return_if_fail (G_IS_VALUE (value2));
360 (GST_VALUE_HOLDS_LIST (value1) ? VALUE_LIST_SIZE (value1) : 1);
362 (GST_VALUE_HOLDS_LIST (value2) ? VALUE_LIST_SIZE (value2) : 1);
363 g_value_init (dest, GST_TYPE_LIST);
364 array = (GArray *) dest->data[0].v_pointer;
365 g_array_set_size (array, value1_length + value2_length);
367 if (GST_VALUE_HOLDS_LIST (value1)) {
368 for (i = 0; i < value1_length; i++) {
369 gst_value_init_and_copy (&g_array_index (array, GValue, i),
370 VALUE_LIST_GET_VALUE (value1, i));
373 gst_value_init_and_copy (&g_array_index (array, GValue, 0), value1);
376 if (GST_VALUE_HOLDS_LIST (value2)) {
377 for (i = 0; i < value2_length; i++) {
378 gst_value_init_and_copy (&g_array_index (array, GValue,
379 i + value1_length), VALUE_LIST_GET_VALUE (value2, i));
382 gst_value_init_and_copy (&g_array_index (array, GValue, value1_length),
388 * gst_value_list_merge:
389 * @dest: (out caller-allocates): an uninitialized #GValue to take the result
393 * Merges copies of @value1 and @value2. Values that are not
394 * of type #GST_TYPE_LIST are treated as if they were lists of length 1.
396 * The result will be put into @dest and will either be a list that will not
397 * contain any duplicates, or a non-list type (if @value1 and @value2
403 gst_value_list_merge (GValue * dest, const GValue * value1,
404 const GValue * value2)
406 guint i, j, k, value1_length, value2_length, skipped;
411 g_return_if_fail (dest != NULL);
412 g_return_if_fail (G_VALUE_TYPE (dest) == 0);
413 g_return_if_fail (G_IS_VALUE (value1));
414 g_return_if_fail (G_IS_VALUE (value2));
417 (GST_VALUE_HOLDS_LIST (value1) ? VALUE_LIST_SIZE (value1) : 1);
419 (GST_VALUE_HOLDS_LIST (value2) ? VALUE_LIST_SIZE (value2) : 1);
420 g_value_init (dest, GST_TYPE_LIST);
421 array = (GArray *) dest->data[0].v_pointer;
422 g_array_set_size (array, value1_length + value2_length);
424 if (GST_VALUE_HOLDS_LIST (value1)) {
425 for (i = 0; i < value1_length; i++) {
426 gst_value_init_and_copy (&g_array_index (array, GValue, i),
427 VALUE_LIST_GET_VALUE (value1, i));
430 gst_value_init_and_copy (&g_array_index (array, GValue, 0), value1);
435 if (GST_VALUE_HOLDS_LIST (value2)) {
436 for (i = 0; i < value2_length; i++) {
438 src = VALUE_LIST_GET_VALUE (value2, i);
439 for (k = 0; k < value1_length; k++) {
440 if (gst_value_compare (&g_array_index (array, GValue, k),
441 src) == GST_VALUE_EQUAL) {
448 gst_value_init_and_copy (&g_array_index (array, GValue, j), src);
454 for (k = 0; k < value1_length; k++) {
455 if (gst_value_compare (&g_array_index (array, GValue, k),
456 value2) == GST_VALUE_EQUAL) {
463 gst_value_init_and_copy (&g_array_index (array, GValue, j), value2);
467 guint new_size = value1_length + (value2_length - skipped);
471 g_array_set_size (array, new_size);
475 /* size is 1, take single value in list and make it new dest */
476 single_dest = g_array_index (array, GValue, 0);
478 /* clean up old value allocations: must set array size to 0, because
479 * allocated values are not inited meaning g_value_unset() will not
481 g_array_set_size (array, 0);
482 g_value_unset (dest);
484 /* the single value is our new result */
491 * gst_value_list_get_size:
492 * @value: a #GValue of type #GST_TYPE_LIST
494 * Gets the number of values contained in @value.
496 * Returns: the number of values
499 gst_value_list_get_size (const GValue * value)
501 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (value), 0);
503 return ((GArray *) value->data[0].v_pointer)->len;
507 * gst_value_list_get_value:
508 * @value: a #GValue of type #GST_TYPE_LIST
509 * @index: index of value to get from the list
511 * Gets the value that is a member of the list contained in @value and
512 * has the index @index.
514 * Returns: (transfer none): the value at the given index
517 gst_value_list_get_value (const GValue * value, guint index)
519 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (value), NULL);
520 g_return_val_if_fail (index < VALUE_LIST_SIZE (value), NULL);
522 return (const GValue *) &g_array_index ((GArray *) value->data[0].v_pointer,
527 * gst_value_array_append_value:
528 * @value: a #GValue of type #GST_TYPE_ARRAY
529 * @append_value: the value to append
531 * Appends @append_value to the GstValueArray in @value.
534 gst_value_array_append_value (GValue * value, const GValue * append_value)
538 g_return_if_fail (GST_VALUE_HOLDS_ARRAY (value));
539 g_return_if_fail (G_IS_VALUE (append_value));
541 gst_value_init_and_copy (&val, append_value);
542 g_array_append_vals ((GArray *) value->data[0].v_pointer, &val, 1);
546 * gst_value_array_prepend_value:
547 * @value: a #GValue of type #GST_TYPE_ARRAY
548 * @prepend_value: the value to prepend
550 * Prepends @prepend_value to the GstValueArray in @value.
553 gst_value_array_prepend_value (GValue * value, const GValue * prepend_value)
557 g_return_if_fail (GST_VALUE_HOLDS_ARRAY (value));
558 g_return_if_fail (G_IS_VALUE (prepend_value));
560 gst_value_init_and_copy (&val, prepend_value);
561 g_array_prepend_vals ((GArray *) value->data[0].v_pointer, &val, 1);
565 * gst_value_array_get_size:
566 * @value: a #GValue of type #GST_TYPE_ARRAY
568 * Gets the number of values contained in @value.
570 * Returns: the number of values
573 gst_value_array_get_size (const GValue * value)
575 g_return_val_if_fail (GST_VALUE_HOLDS_ARRAY (value), 0);
577 return ((GArray *) value->data[0].v_pointer)->len;
581 * gst_value_array_get_value:
582 * @value: a #GValue of type #GST_TYPE_ARRAY
583 * @index: index of value to get from the array
585 * Gets the value that is a member of the array contained in @value and
586 * has the index @index.
588 * Returns: (transfer none): the value at the given index
591 gst_value_array_get_value (const GValue * value, guint index)
593 g_return_val_if_fail (GST_VALUE_HOLDS_ARRAY (value), NULL);
594 g_return_val_if_fail (index < gst_value_array_get_size (value), NULL);
596 return (const GValue *) &g_array_index ((GArray *) value->data[0].v_pointer,
601 gst_value_transform_list_string (const GValue * src_value, GValue * dest_value)
603 gst_value_transform_any_list_string (src_value, dest_value, "{ ", " }");
607 gst_value_transform_array_string (const GValue * src_value, GValue * dest_value)
609 gst_value_transform_any_list_string (src_value, dest_value, "< ", " >");
612 /* Do an unordered compare of the contents of a list */
614 gst_value_compare_list (const GValue * value1, const GValue * value2)
617 GArray *array1 = value1->data[0].v_pointer;
618 GArray *array2 = value2->data[0].v_pointer;
623 GstValueCompareFunc compare;
625 /* get length and do initial length check. */
627 if (len != array2->len)
628 return GST_VALUE_UNORDERED;
630 /* place to mark removed value indices of array2 */
631 removed = g_newa (guint8, len);
632 memset (removed, 0, len);
635 /* loop over array1, all items should be in array2. When we find an
636 * item in array2, remove it from array2 by marking it as removed */
637 for (i = 0; i < len; i++) {
638 v1 = &g_array_index (array1, GValue, i);
639 if ((compare = gst_value_get_compare_func (v1))) {
640 for (j = 0; j < len; j++) {
641 /* item is removed, we can skip it */
644 v2 = &g_array_index (array2, GValue, j);
645 if (gst_value_compare_with_func (v1, v2, compare) == GST_VALUE_EQUAL) {
646 /* mark item as removed now that we found it in array2 and
647 * decrement the number of remaining items in array2. */
653 /* item in array1 and not in array2, UNORDERED */
655 return GST_VALUE_UNORDERED;
657 return GST_VALUE_UNORDERED;
659 /* if not all items were removed, array2 contained something not in array1 */
661 return GST_VALUE_UNORDERED;
663 /* arrays are equal */
664 return GST_VALUE_EQUAL;
667 /* Perform an ordered comparison of the contents of an array */
669 gst_value_compare_array (const GValue * value1, const GValue * value2)
672 GArray *array1 = value1->data[0].v_pointer;
673 GArray *array2 = value2->data[0].v_pointer;
674 guint len = array1->len;
678 if (len != array2->len)
679 return GST_VALUE_UNORDERED;
681 for (i = 0; i < len; i++) {
682 v1 = &g_array_index (array1, GValue, i);
683 v2 = &g_array_index (array2, GValue, i);
684 if (gst_value_compare (v1, v2) != GST_VALUE_EQUAL)
685 return GST_VALUE_UNORDERED;
688 return GST_VALUE_EQUAL;
692 gst_value_serialize_list (const GValue * value)
694 return gst_value_serialize_any_list (value, "{ ", " }");
698 gst_value_deserialize_list (GValue * dest, const gchar * s)
700 g_warning ("gst_value_deserialize_list: unimplemented");
705 gst_value_serialize_array (const GValue * value)
707 return gst_value_serialize_any_list (value, "< ", " >");
711 gst_value_deserialize_array (GValue * dest, const gchar * s)
713 g_warning ("gst_value_deserialize_array: unimplemented");
722 gst_value_init_fourcc (GValue * value)
724 value->data[0].v_int = 0;
728 gst_value_copy_fourcc (const GValue * src_value, GValue * dest_value)
730 dest_value->data[0].v_int = src_value->data[0].v_int;
734 gst_value_collect_fourcc (GValue * value, guint n_collect_values,
735 GTypeCValue * collect_values, guint collect_flags)
737 value->data[0].v_int = collect_values[0].v_int;
743 gst_value_lcopy_fourcc (const GValue * value, guint n_collect_values,
744 GTypeCValue * collect_values, guint collect_flags)
746 guint32 *fourcc_p = collect_values[0].v_pointer;
749 return g_strdup_printf ("value location for `%s' passed as NULL",
750 G_VALUE_TYPE_NAME (value));
752 *fourcc_p = value->data[0].v_int;
758 * gst_value_set_fourcc:
759 * @value: a GValue initialized to #GST_TYPE_FOURCC
760 * @fourcc: the #guint32 fourcc to set
762 * Sets @value to @fourcc.
765 gst_value_set_fourcc (GValue * value, guint32 fourcc)
767 g_return_if_fail (GST_VALUE_HOLDS_FOURCC (value));
769 value->data[0].v_int = fourcc;
773 * gst_value_get_fourcc:
774 * @value: a GValue initialized to #GST_TYPE_FOURCC
776 * Gets the #guint32 fourcc contained in @value.
778 * Returns: the #guint32 fourcc contained in @value.
781 gst_value_get_fourcc (const GValue * value)
783 g_return_val_if_fail (GST_VALUE_HOLDS_FOURCC (value), 0);
785 return value->data[0].v_int;
789 gst_value_transform_fourcc_string (const GValue * src_value,
792 guint32 fourcc = src_value->data[0].v_int;
793 gchar fourcc_char[4];
795 fourcc_char[0] = (fourcc >> 0) & 0xff;
796 fourcc_char[1] = (fourcc >> 8) & 0xff;
797 fourcc_char[2] = (fourcc >> 16) & 0xff;
798 fourcc_char[3] = (fourcc >> 24) & 0xff;
800 if ((g_ascii_isalnum (fourcc_char[0]) || fourcc_char[0] == ' ') &&
801 (g_ascii_isalnum (fourcc_char[1]) || fourcc_char[1] == ' ') &&
802 (g_ascii_isalnum (fourcc_char[2]) || fourcc_char[2] == ' ') &&
803 (g_ascii_isalnum (fourcc_char[3]) || fourcc_char[3] == ' ')) {
804 dest_value->data[0].v_pointer =
805 g_strdup_printf ("%" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc));
807 dest_value->data[0].v_pointer = g_strdup_printf ("0x%08x", fourcc);
812 gst_value_compare_fourcc (const GValue * value1, const GValue * value2)
814 if (value2->data[0].v_int == value1->data[0].v_int)
815 return GST_VALUE_EQUAL;
816 return GST_VALUE_UNORDERED;
820 gst_value_serialize_fourcc (const GValue * value)
822 guint32 fourcc = value->data[0].v_int;
823 gchar fourcc_char[4];
825 fourcc_char[0] = (fourcc >> 0) & 0xff;
826 fourcc_char[1] = (fourcc >> 8) & 0xff;
827 fourcc_char[2] = (fourcc >> 16) & 0xff;
828 fourcc_char[3] = (fourcc >> 24) & 0xff;
830 if ((g_ascii_isalnum (fourcc_char[0]) || fourcc_char[0] == ' ') &&
831 (g_ascii_isalnum (fourcc_char[1]) || fourcc_char[1] == ' ') &&
832 (g_ascii_isalnum (fourcc_char[2]) || fourcc_char[2] == ' ') &&
833 (g_ascii_isalnum (fourcc_char[3]) || fourcc_char[3] == ' ')) {
834 return g_strdup_printf ("%" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (fourcc));
836 return g_strdup_printf ("0x%08x", fourcc);
841 gst_value_deserialize_fourcc (GValue * dest, const gchar * s)
843 gboolean ret = FALSE;
849 fourcc = GST_MAKE_FOURCC (s[0], s[1], s[2], s[3]);
852 fourcc = GST_MAKE_FOURCC (s[0], s[1], s[2], ' ');
855 fourcc = GST_MAKE_FOURCC (s[0], s[1], ' ', ' ');
858 fourcc = GST_MAKE_FOURCC (s[0], ' ', ' ', ' ');
860 } else if (g_ascii_isdigit (*s)) {
861 fourcc = strtoul (s, &end, 0);
866 gst_value_set_fourcc (dest, fourcc);
876 gst_value_init_int_range (GValue * value)
878 value->data[0].v_int = 0;
879 value->data[1].v_int = 0;
883 gst_value_copy_int_range (const GValue * src_value, GValue * dest_value)
885 dest_value->data[0].v_int = src_value->data[0].v_int;
886 dest_value->data[1].v_int = src_value->data[1].v_int;
890 gst_value_collect_int_range (GValue * value, guint n_collect_values,
891 GTypeCValue * collect_values, guint collect_flags)
893 if (n_collect_values != 2)
894 return g_strdup_printf ("not enough value locations for `%s' passed",
895 G_VALUE_TYPE_NAME (value));
896 if (collect_values[0].v_int >= collect_values[1].v_int)
897 return g_strdup_printf ("range start is not smaller than end for `%s'",
898 G_VALUE_TYPE_NAME (value));
900 value->data[0].v_int = collect_values[0].v_int;
901 value->data[1].v_int = collect_values[1].v_int;
907 gst_value_lcopy_int_range (const GValue * value, guint n_collect_values,
908 GTypeCValue * collect_values, guint collect_flags)
910 guint32 *int_range_start = collect_values[0].v_pointer;
911 guint32 *int_range_end = collect_values[1].v_pointer;
913 if (!int_range_start)
914 return g_strdup_printf ("start value location for `%s' passed as NULL",
915 G_VALUE_TYPE_NAME (value));
917 return g_strdup_printf ("end value location for `%s' passed as NULL",
918 G_VALUE_TYPE_NAME (value));
920 *int_range_start = value->data[0].v_int;
921 *int_range_end = value->data[1].v_int;
927 * gst_value_set_int_range:
928 * @value: a GValue initialized to GST_TYPE_INT_RANGE
929 * @start: the start of the range
930 * @end: the end of the range
932 * Sets @value to the range specified by @start and @end.
935 gst_value_set_int_range (GValue * value, gint start, gint end)
937 g_return_if_fail (GST_VALUE_HOLDS_INT_RANGE (value));
938 g_return_if_fail (start < end);
940 value->data[0].v_int = start;
941 value->data[1].v_int = end;
945 * gst_value_get_int_range_min:
946 * @value: a GValue initialized to GST_TYPE_INT_RANGE
948 * Gets the minimum of the range specified by @value.
950 * Returns: the minimum of the range
953 gst_value_get_int_range_min (const GValue * value)
955 g_return_val_if_fail (GST_VALUE_HOLDS_INT_RANGE (value), 0);
957 return value->data[0].v_int;
961 * gst_value_get_int_range_max:
962 * @value: a GValue initialized to GST_TYPE_INT_RANGE
964 * Gets the maximum of the range specified by @value.
966 * Returns: the maxumum of the range
969 gst_value_get_int_range_max (const GValue * value)
971 g_return_val_if_fail (GST_VALUE_HOLDS_INT_RANGE (value), 0);
973 return value->data[1].v_int;
977 gst_value_transform_int_range_string (const GValue * src_value,
980 dest_value->data[0].v_pointer = g_strdup_printf ("[%d,%d]",
981 (int) src_value->data[0].v_int, (int) src_value->data[1].v_int);
985 gst_value_compare_int_range (const GValue * value1, const GValue * value2)
987 if (value2->data[0].v_int == value1->data[0].v_int &&
988 value2->data[1].v_int == value1->data[1].v_int)
989 return GST_VALUE_EQUAL;
990 return GST_VALUE_UNORDERED;
994 gst_value_serialize_int_range (const GValue * value)
996 return g_strdup_printf ("[ %d, %d ]", value->data[0].v_int,
997 value->data[1].v_int);
1001 gst_value_deserialize_int_range (GValue * dest, const gchar * s)
1003 g_warning ("unimplemented");
1012 gst_value_init_int64_range (GValue * value)
1014 value->data[0].v_int64 = 0;
1015 value->data[1].v_int64 = 0;
1019 gst_value_copy_int64_range (const GValue * src_value, GValue * dest_value)
1021 dest_value->data[0].v_int64 = src_value->data[0].v_int64;
1022 dest_value->data[1].v_int64 = src_value->data[1].v_int64;
1026 gst_value_collect_int64_range (GValue * value, guint n_collect_values,
1027 GTypeCValue * collect_values, guint collect_flags)
1029 if (n_collect_values != 2)
1030 return g_strdup_printf ("not enough value locations for `%s' passed",
1031 G_VALUE_TYPE_NAME (value));
1032 if (collect_values[0].v_int64 >= collect_values[1].v_int64)
1033 return g_strdup_printf ("range start is not smaller than end for `%s'",
1034 G_VALUE_TYPE_NAME (value));
1036 value->data[0].v_int64 = collect_values[0].v_int64;
1037 value->data[1].v_int64 = collect_values[1].v_int64;
1043 gst_value_lcopy_int64_range (const GValue * value, guint n_collect_values,
1044 GTypeCValue * collect_values, guint collect_flags)
1046 guint64 *int_range_start = collect_values[0].v_pointer;
1047 guint64 *int_range_end = collect_values[1].v_pointer;
1049 if (!int_range_start)
1050 return g_strdup_printf ("start value location for `%s' passed as NULL",
1051 G_VALUE_TYPE_NAME (value));
1053 return g_strdup_printf ("end value location for `%s' passed as NULL",
1054 G_VALUE_TYPE_NAME (value));
1056 *int_range_start = value->data[0].v_int64;
1057 *int_range_end = value->data[1].v_int64;
1063 * gst_value_set_int64_range:
1064 * @value: a GValue initialized to GST_TYPE_INT64_RANGE
1065 * @start: the start of the range
1066 * @end: the end of the range
1068 * Sets @value to the range specified by @start and @end.
1073 gst_value_set_int64_range (GValue * value, gint64 start, gint64 end)
1075 g_return_if_fail (GST_VALUE_HOLDS_INT64_RANGE (value));
1076 g_return_if_fail (start < end);
1078 value->data[0].v_int64 = start;
1079 value->data[1].v_int64 = end;
1083 * gst_value_get_int64_range_min:
1084 * @value: a GValue initialized to GST_TYPE_INT64_RANGE
1086 * Gets the minimum of the range specified by @value.
1088 * Returns: the minimum of the range
1093 gst_value_get_int64_range_min (const GValue * value)
1095 g_return_val_if_fail (GST_VALUE_HOLDS_INT64_RANGE (value), 0);
1097 return value->data[0].v_int64;
1101 * gst_value_get_int64_range_max:
1102 * @value: a GValue initialized to GST_TYPE_INT64_RANGE
1104 * Gets the maximum of the range specified by @value.
1106 * Returns: the maxumum of the range
1111 gst_value_get_int64_range_max (const GValue * value)
1113 g_return_val_if_fail (GST_VALUE_HOLDS_INT64_RANGE (value), 0);
1115 return value->data[1].v_int64;
1119 gst_value_transform_int64_range_string (const GValue * src_value,
1120 GValue * dest_value)
1122 dest_value->data[0].v_pointer =
1123 g_strdup_printf ("(gint64)[%" G_GINT64_FORMAT ",%" G_GINT64_FORMAT "]",
1124 src_value->data[0].v_int64, src_value->data[1].v_int64);
1128 gst_value_compare_int64_range (const GValue * value1, const GValue * value2)
1130 if (value2->data[0].v_int64 == value1->data[0].v_int64 &&
1131 value2->data[1].v_int64 == value1->data[1].v_int64)
1132 return GST_VALUE_EQUAL;
1133 return GST_VALUE_UNORDERED;
1137 gst_value_serialize_int64_range (const GValue * value)
1139 return g_strdup_printf ("[ %" G_GINT64_FORMAT ", %" G_GINT64_FORMAT " ]",
1140 value->data[0].v_int64, value->data[1].v_int64);
1144 gst_value_deserialize_int64_range (GValue * dest, const gchar * s)
1146 g_warning ("unimplemented");
1155 gst_value_init_double_range (GValue * value)
1157 value->data[0].v_double = 0;
1158 value->data[1].v_double = 0;
1162 gst_value_copy_double_range (const GValue * src_value, GValue * dest_value)
1164 dest_value->data[0].v_double = src_value->data[0].v_double;
1165 dest_value->data[1].v_double = src_value->data[1].v_double;
1169 gst_value_collect_double_range (GValue * value, guint n_collect_values,
1170 GTypeCValue * collect_values, guint collect_flags)
1172 if (n_collect_values != 2)
1173 return g_strdup_printf ("not enough value locations for `%s' passed",
1174 G_VALUE_TYPE_NAME (value));
1175 if (collect_values[0].v_double >= collect_values[1].v_double)
1176 return g_strdup_printf ("range start is not smaller than end for `%s'",
1177 G_VALUE_TYPE_NAME (value));
1179 value->data[0].v_double = collect_values[0].v_double;
1180 value->data[1].v_double = collect_values[1].v_double;
1186 gst_value_lcopy_double_range (const GValue * value, guint n_collect_values,
1187 GTypeCValue * collect_values, guint collect_flags)
1189 gdouble *double_range_start = collect_values[0].v_pointer;
1190 gdouble *double_range_end = collect_values[1].v_pointer;
1192 if (!double_range_start)
1193 return g_strdup_printf ("start value location for `%s' passed as NULL",
1194 G_VALUE_TYPE_NAME (value));
1195 if (!double_range_end)
1196 return g_strdup_printf ("end value location for `%s' passed as NULL",
1197 G_VALUE_TYPE_NAME (value));
1199 *double_range_start = value->data[0].v_double;
1200 *double_range_end = value->data[1].v_double;
1206 * gst_value_set_double_range:
1207 * @value: a GValue initialized to GST_TYPE_DOUBLE_RANGE
1208 * @start: the start of the range
1209 * @end: the end of the range
1211 * Sets @value to the range specified by @start and @end.
1214 gst_value_set_double_range (GValue * value, gdouble start, gdouble end)
1216 g_return_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value));
1217 g_return_if_fail (start < end);
1219 value->data[0].v_double = start;
1220 value->data[1].v_double = end;
1224 * gst_value_get_double_range_min:
1225 * @value: a GValue initialized to GST_TYPE_DOUBLE_RANGE
1227 * Gets the minimum of the range specified by @value.
1229 * Returns: the minimum of the range
1232 gst_value_get_double_range_min (const GValue * value)
1234 g_return_val_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value), 0);
1236 return value->data[0].v_double;
1240 * gst_value_get_double_range_max:
1241 * @value: a GValue initialized to GST_TYPE_DOUBLE_RANGE
1243 * Gets the maximum of the range specified by @value.
1245 * Returns: the maxumum of the range
1248 gst_value_get_double_range_max (const GValue * value)
1250 g_return_val_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value), 0);
1252 return value->data[1].v_double;
1256 gst_value_transform_double_range_string (const GValue * src_value,
1257 GValue * dest_value)
1259 gchar s1[G_ASCII_DTOSTR_BUF_SIZE], s2[G_ASCII_DTOSTR_BUF_SIZE];
1261 dest_value->data[0].v_pointer = g_strdup_printf ("[%s,%s]",
1262 g_ascii_dtostr (s1, G_ASCII_DTOSTR_BUF_SIZE,
1263 src_value->data[0].v_double),
1264 g_ascii_dtostr (s2, G_ASCII_DTOSTR_BUF_SIZE,
1265 src_value->data[1].v_double));
1269 gst_value_compare_double_range (const GValue * value1, const GValue * value2)
1271 if (value2->data[0].v_double == value1->data[0].v_double &&
1272 value2->data[0].v_double == value1->data[0].v_double)
1273 return GST_VALUE_EQUAL;
1274 return GST_VALUE_UNORDERED;
1278 gst_value_serialize_double_range (const GValue * value)
1280 gchar d1[G_ASCII_DTOSTR_BUF_SIZE];
1281 gchar d2[G_ASCII_DTOSTR_BUF_SIZE];
1283 g_ascii_dtostr (d1, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_double);
1284 g_ascii_dtostr (d2, G_ASCII_DTOSTR_BUF_SIZE, value->data[1].v_double);
1285 return g_strdup_printf ("[ %s, %s ]", d1, d2);
1289 gst_value_deserialize_double_range (GValue * dest, const gchar * s)
1291 g_warning ("unimplemented");
1300 gst_value_init_fraction_range (GValue * value)
1305 ftype = GST_TYPE_FRACTION;
1307 value->data[0].v_pointer = vals = g_slice_alloc0 (2 * sizeof (GValue));
1308 g_value_init (&vals[0], ftype);
1309 g_value_init (&vals[1], ftype);
1313 gst_value_free_fraction_range (GValue * value)
1315 GValue *vals = (GValue *) value->data[0].v_pointer;
1318 g_value_unset (&vals[0]);
1319 g_value_unset (&vals[1]);
1320 g_slice_free1 (2 * sizeof (GValue), vals);
1321 value->data[0].v_pointer = NULL;
1326 gst_value_copy_fraction_range (const GValue * src_value, GValue * dest_value)
1328 GValue *vals = (GValue *) dest_value->data[0].v_pointer;
1329 GValue *src_vals = (GValue *) src_value->data[0].v_pointer;
1332 gst_value_init_fraction_range (dest_value);
1333 vals = dest_value->data[0].v_pointer;
1335 if (src_vals != NULL) {
1336 g_value_copy (&src_vals[0], &vals[0]);
1337 g_value_copy (&src_vals[1], &vals[1]);
1342 gst_value_collect_fraction_range (GValue * value, guint n_collect_values,
1343 GTypeCValue * collect_values, guint collect_flags)
1345 GValue *vals = (GValue *) value->data[0].v_pointer;
1347 if (n_collect_values != 4)
1348 return g_strdup_printf ("not enough value locations for `%s' passed",
1349 G_VALUE_TYPE_NAME (value));
1350 if (collect_values[1].v_int == 0)
1351 return g_strdup_printf ("passed '0' as first denominator for `%s'",
1352 G_VALUE_TYPE_NAME (value));
1353 if (collect_values[3].v_int == 0)
1354 return g_strdup_printf ("passed '0' as second denominator for `%s'",
1355 G_VALUE_TYPE_NAME (value));
1356 if (gst_util_fraction_compare (collect_values[0].v_int,
1357 collect_values[1].v_int, collect_values[2].v_int,
1358 collect_values[3].v_int) >= 0)
1359 return g_strdup_printf ("range start is not smaller than end for `%s'",
1360 G_VALUE_TYPE_NAME (value));
1363 gst_value_init_fraction_range (value);
1364 vals = value->data[0].v_pointer;
1367 gst_value_set_fraction (&vals[0], collect_values[0].v_int,
1368 collect_values[1].v_int);
1369 gst_value_set_fraction (&vals[1], collect_values[2].v_int,
1370 collect_values[3].v_int);
1376 gst_value_lcopy_fraction_range (const GValue * value, guint n_collect_values,
1377 GTypeCValue * collect_values, guint collect_flags)
1380 gint *dest_values[4];
1381 GValue *vals = (GValue *) value->data[0].v_pointer;
1383 if (G_UNLIKELY (n_collect_values != 4))
1384 return g_strdup_printf ("not enough value locations for `%s' passed",
1385 G_VALUE_TYPE_NAME (value));
1387 for (i = 0; i < 4; i++) {
1388 if (G_UNLIKELY (collect_values[i].v_pointer == NULL)) {
1389 return g_strdup_printf ("value location for `%s' passed as NULL",
1390 G_VALUE_TYPE_NAME (value));
1392 dest_values[i] = collect_values[i].v_pointer;
1395 if (G_UNLIKELY (vals == NULL)) {
1396 return g_strdup_printf ("Uninitialised `%s' passed",
1397 G_VALUE_TYPE_NAME (value));
1400 dest_values[0][0] = gst_value_get_fraction_numerator (&vals[0]);
1401 dest_values[1][0] = gst_value_get_fraction_denominator (&vals[0]);
1402 dest_values[2][0] = gst_value_get_fraction_numerator (&vals[1]);
1403 dest_values[3][0] = gst_value_get_fraction_denominator (&vals[1]);
1408 * gst_value_set_fraction_range:
1409 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1410 * @start: the start of the range (a GST_TYPE_FRACTION GValue)
1411 * @end: the end of the range (a GST_TYPE_FRACTION GValue)
1413 * Sets @value to the range specified by @start and @end.
1416 gst_value_set_fraction_range (GValue * value, const GValue * start,
1421 g_return_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value));
1422 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (start));
1423 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (end));
1424 g_return_if_fail (gst_util_fraction_compare (start->data[0].v_int,
1425 start->data[1].v_int, end->data[0].v_int, end->data[1].v_int) < 0);
1427 vals = (GValue *) value->data[0].v_pointer;
1429 gst_value_init_fraction_range (value);
1430 vals = value->data[0].v_pointer;
1432 g_value_copy (start, &vals[0]);
1433 g_value_copy (end, &vals[1]);
1437 * gst_value_set_fraction_range_full:
1438 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1439 * @numerator_start: the numerator start of the range
1440 * @denominator_start: the denominator start of the range
1441 * @numerator_end: the numerator end of the range
1442 * @denominator_end: the denominator end of the range
1444 * Sets @value to the range specified by @numerator_start/@denominator_start
1445 * and @numerator_end/@denominator_end.
1448 gst_value_set_fraction_range_full (GValue * value,
1449 gint numerator_start, gint denominator_start,
1450 gint numerator_end, gint denominator_end)
1452 GValue start = { 0 };
1455 g_return_if_fail (value != NULL);
1456 g_return_if_fail (denominator_start != 0);
1457 g_return_if_fail (denominator_end != 0);
1458 g_return_if_fail (gst_util_fraction_compare (numerator_start,
1459 denominator_start, numerator_end, denominator_end) < 0);
1461 g_value_init (&start, GST_TYPE_FRACTION);
1462 g_value_init (&end, GST_TYPE_FRACTION);
1464 gst_value_set_fraction (&start, numerator_start, denominator_start);
1465 gst_value_set_fraction (&end, numerator_end, denominator_end);
1466 gst_value_set_fraction_range (value, &start, &end);
1468 g_value_unset (&start);
1469 g_value_unset (&end);
1473 * gst_value_get_fraction_range_min:
1474 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1476 * Gets the minimum of the range specified by @value.
1478 * Returns: the minimum of the range
1481 gst_value_get_fraction_range_min (const GValue * value)
1485 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value), NULL);
1487 vals = (GValue *) value->data[0].v_pointer;
1496 * gst_value_get_fraction_range_max:
1497 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1499 * Gets the maximum of the range specified by @value.
1501 * Returns: the maximum of the range
1504 gst_value_get_fraction_range_max (const GValue * value)
1508 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value), NULL);
1510 vals = (GValue *) value->data[0].v_pointer;
1519 gst_value_serialize_fraction_range (const GValue * value)
1521 GValue *vals = (GValue *) value->data[0].v_pointer;
1525 retval = g_strdup ("[ 0/1, 0/1 ]");
1529 start = gst_value_serialize_fraction (&vals[0]);
1530 end = gst_value_serialize_fraction (&vals[1]);
1532 retval = g_strdup_printf ("[ %s, %s ]", start, end);
1541 gst_value_transform_fraction_range_string (const GValue * src_value,
1542 GValue * dest_value)
1544 dest_value->data[0].v_pointer =
1545 gst_value_serialize_fraction_range (src_value);
1549 gst_value_compare_fraction_range (const GValue * value1, const GValue * value2)
1551 GValue *vals1, *vals2;
1552 GstValueCompareFunc compare;
1554 if (value2->data[0].v_pointer == value1->data[0].v_pointer)
1555 return GST_VALUE_EQUAL; /* Only possible if both are NULL */
1557 if (value2->data[0].v_pointer == NULL || value1->data[0].v_pointer == NULL)
1558 return GST_VALUE_UNORDERED;
1560 vals1 = (GValue *) value1->data[0].v_pointer;
1561 vals2 = (GValue *) value2->data[0].v_pointer;
1562 if ((compare = gst_value_get_compare_func (&vals1[0]))) {
1563 if (gst_value_compare_with_func (&vals1[0], &vals2[0], compare) ==
1565 gst_value_compare_with_func (&vals1[1], &vals2[1], compare) ==
1567 return GST_VALUE_EQUAL;
1569 return GST_VALUE_UNORDERED;
1573 gst_value_deserialize_fraction_range (GValue * dest, const gchar * s)
1575 g_warning ("unimplemented");
1584 * gst_value_set_caps:
1585 * @value: a GValue initialized to GST_TYPE_CAPS
1586 * @caps: (transfer none): the caps to set the value to
1588 * Sets the contents of @value to @caps. A reference to the
1589 * provided @caps will be taken by the @value.
1592 gst_value_set_caps (GValue * value, const GstCaps * caps)
1594 g_return_if_fail (G_IS_VALUE (value));
1595 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_CAPS);
1596 g_return_if_fail (caps == NULL || GST_IS_CAPS (caps));
1598 g_value_set_boxed (value, caps);
1602 * gst_value_get_caps:
1603 * @value: a GValue initialized to GST_TYPE_CAPS
1605 * Gets the contents of @value. The reference count of the returned
1606 * #GstCaps will not be modified, therefore the caller must take one
1607 * before getting rid of the @value.
1609 * Returns: (transfer none): the contents of @value
1612 gst_value_get_caps (const GValue * value)
1614 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1615 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_CAPS, NULL);
1617 return (GstCaps *) g_value_get_boxed (value);
1621 gst_value_serialize_caps (const GValue * value)
1623 GstCaps *caps = g_value_get_boxed (value);
1625 return gst_caps_to_string (caps);
1629 gst_value_deserialize_caps (GValue * dest, const gchar * s)
1633 caps = gst_caps_from_string (s);
1636 g_value_take_boxed (dest, caps);
1647 * gst_value_set_structure:
1648 * @value: a GValue initialized to GST_TYPE_STRUCTURE
1649 * @structure: the structure to set the value to
1651 * Sets the contents of @value to @structure. The actual
1656 gst_value_set_structure (GValue * value, const GstStructure * structure)
1658 g_return_if_fail (G_IS_VALUE (value));
1659 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_STRUCTURE);
1660 g_return_if_fail (structure == NULL || GST_IS_STRUCTURE (structure));
1662 g_value_set_boxed (value, structure);
1666 * gst_value_get_structure:
1667 * @value: a GValue initialized to GST_TYPE_STRUCTURE
1669 * Gets the contents of @value.
1671 * Returns: (transfer none): the contents of @value
1675 const GstStructure *
1676 gst_value_get_structure (const GValue * value)
1678 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1679 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_STRUCTURE, NULL);
1681 return (GstStructure *) g_value_get_boxed (value);
1685 gst_value_serialize_structure (const GValue * value)
1687 GstStructure *structure = g_value_get_boxed (value);
1689 return gst_string_take_and_wrap (gst_structure_to_string (structure));
1693 gst_value_deserialize_structure (GValue * dest, const gchar * s)
1695 GstStructure *structure;
1698 structure = gst_structure_from_string (s, NULL);
1700 gchar *str = gst_string_unwrap (s);
1702 if (G_UNLIKELY (!str))
1705 structure = gst_structure_from_string (str, NULL);
1709 if (G_LIKELY (structure)) {
1710 g_value_take_boxed (dest, structure);
1721 gst_value_compare_buffer (const GValue * value1, const GValue * value2)
1723 GstBuffer *buf1 = GST_BUFFER (gst_value_get_mini_object (value1));
1724 GstBuffer *buf2 = GST_BUFFER (gst_value_get_mini_object (value2));
1726 if (GST_BUFFER_SIZE (buf1) != GST_BUFFER_SIZE (buf2))
1727 return GST_VALUE_UNORDERED;
1728 if (GST_BUFFER_SIZE (buf1) == 0)
1729 return GST_VALUE_EQUAL;
1730 g_assert (GST_BUFFER_DATA (buf1));
1731 g_assert (GST_BUFFER_DATA (buf2));
1732 if (memcmp (GST_BUFFER_DATA (buf1), GST_BUFFER_DATA (buf2),
1733 GST_BUFFER_SIZE (buf1)) == 0)
1734 return GST_VALUE_EQUAL;
1736 return GST_VALUE_UNORDERED;
1740 gst_value_serialize_buffer (const GValue * value)
1748 buffer = gst_value_get_buffer (value);
1752 data = GST_BUFFER_DATA (buffer);
1753 size = GST_BUFFER_SIZE (buffer);
1755 string = g_malloc (size * 2 + 1);
1756 for (i = 0; i < size; i++) {
1757 sprintf (string + i * 2, "%02x", data[i]);
1759 string[size * 2] = 0;
1765 gst_value_deserialize_buffer (GValue * dest, const gchar * s)
1777 buffer = gst_buffer_new_and_alloc (len / 2);
1778 data = GST_BUFFER_DATA (buffer);
1779 for (i = 0; i < len / 2; i++) {
1780 if (!isxdigit ((int) s[i * 2]) || !isxdigit ((int) s[i * 2 + 1]))
1783 ts[0] = s[i * 2 + 0];
1784 ts[1] = s[i * 2 + 1];
1787 data[i] = (guint8) strtoul (ts, NULL, 16);
1790 gst_value_take_buffer (dest, buffer);
1801 gst_buffer_unref (buffer);
1812 gst_value_compare_boolean (const GValue * value1, const GValue * value2)
1814 if ((value1->data[0].v_int != 0) == (value2->data[0].v_int != 0))
1815 return GST_VALUE_EQUAL;
1816 return GST_VALUE_UNORDERED;
1820 gst_value_serialize_boolean (const GValue * value)
1822 if (value->data[0].v_int) {
1823 return g_strdup ("true");
1825 return g_strdup ("false");
1829 gst_value_deserialize_boolean (GValue * dest, const gchar * s)
1831 gboolean ret = FALSE;
1833 if (g_ascii_strcasecmp (s, "true") == 0 ||
1834 g_ascii_strcasecmp (s, "yes") == 0 ||
1835 g_ascii_strcasecmp (s, "t") == 0 || strcmp (s, "1") == 0) {
1836 g_value_set_boolean (dest, TRUE);
1838 } else if (g_ascii_strcasecmp (s, "false") == 0 ||
1839 g_ascii_strcasecmp (s, "no") == 0 ||
1840 g_ascii_strcasecmp (s, "f") == 0 || strcmp (s, "0") == 0) {
1841 g_value_set_boolean (dest, FALSE);
1848 #define CREATE_SERIALIZATION_START(_type,_macro) \
1850 gst_value_compare_ ## _type \
1851 (const GValue * value1, const GValue * value2) \
1853 g ## _type val1 = g_value_get_ ## _type (value1); \
1854 g ## _type val2 = g_value_get_ ## _type (value2); \
1856 return GST_VALUE_GREATER_THAN; \
1858 return GST_VALUE_LESS_THAN; \
1859 return GST_VALUE_EQUAL; \
1863 gst_value_serialize_ ## _type (const GValue * value) \
1865 GValue val = { 0, }; \
1866 g_value_init (&val, G_TYPE_STRING); \
1867 if (!g_value_transform (value, &val)) \
1868 g_assert_not_reached (); \
1869 /* NO_COPY_MADNESS!!! */ \
1870 return (char *) g_value_get_string (&val); \
1873 /* deserialize the given s into to as a gint64.
1874 * check if the result is actually storeable in the given size number of
1878 gst_value_deserialize_int_helper (gint64 * to, const gchar * s,
1879 gint64 min, gint64 max, gint size)
1881 gboolean ret = FALSE;
1886 *to = g_ascii_strtoull (s, &end, 0);
1887 /* a range error is a definitive no-no */
1888 if (errno == ERANGE) {
1895 if (g_ascii_strcasecmp (s, "little_endian") == 0) {
1896 *to = G_LITTLE_ENDIAN;
1898 } else if (g_ascii_strcasecmp (s, "big_endian") == 0) {
1901 } else if (g_ascii_strcasecmp (s, "byte_order") == 0) {
1904 } else if (g_ascii_strcasecmp (s, "min") == 0) {
1907 } else if (g_ascii_strcasecmp (s, "max") == 0) {
1913 /* by definition, a gint64 fits into a gint64; so ignore those */
1914 if (size != sizeof (mask)) {
1916 /* for positive numbers, we create a mask of 1's outside of the range
1917 * and 0's inside the range. An and will thus keep only 1 bits
1918 * outside of the range */
1919 mask <<= (size * 8);
1920 if ((mask & *to) != 0) {
1924 /* for negative numbers, we do a 2's complement version */
1925 mask <<= ((size * 8) - 1);
1926 if ((mask & *to) != mask) {
1935 #define CREATE_SERIALIZATION(_type,_macro) \
1936 CREATE_SERIALIZATION_START(_type,_macro) \
1939 gst_value_deserialize_ ## _type (GValue * dest, const gchar *s) \
1943 if (gst_value_deserialize_int_helper (&x, s, G_MIN ## _macro, \
1944 G_MAX ## _macro, sizeof (g ## _type))) { \
1945 g_value_set_ ## _type (dest, /*(g ## _type)*/ x); \
1952 #define CREATE_USERIALIZATION(_type,_macro) \
1953 CREATE_SERIALIZATION_START(_type,_macro) \
1956 gst_value_deserialize_ ## _type (GValue * dest, const gchar *s) \
1960 gboolean ret = FALSE; \
1963 x = g_ascii_strtoull (s, &end, 0); \
1964 /* a range error is a definitive no-no */ \
1965 if (errno == ERANGE) { \
1968 /* the cast ensures the range check later on makes sense */ \
1969 x = (g ## _type) x; \
1973 if (g_ascii_strcasecmp (s, "little_endian") == 0) { \
1974 x = G_LITTLE_ENDIAN; \
1976 } else if (g_ascii_strcasecmp (s, "big_endian") == 0) { \
1979 } else if (g_ascii_strcasecmp (s, "byte_order") == 0) { \
1982 } else if (g_ascii_strcasecmp (s, "min") == 0) { \
1985 } else if (g_ascii_strcasecmp (s, "max") == 0) { \
1986 x = G_MAX ## _macro; \
1991 if (x > G_MAX ## _macro) { \
1994 g_value_set_ ## _type (dest, x); \
2000 #define REGISTER_SERIALIZATION(_gtype, _type) \
2002 static const GstValueTable gst_value = { \
2004 gst_value_compare_ ## _type, \
2005 gst_value_serialize_ ## _type, \
2006 gst_value_deserialize_ ## _type, \
2009 gst_value_register (&gst_value); \
2012 CREATE_SERIALIZATION (int, INT);
2013 CREATE_SERIALIZATION (int64, INT64);
2014 CREATE_SERIALIZATION (long, LONG);
2016 CREATE_USERIALIZATION (uint, UINT);
2017 CREATE_USERIALIZATION (uint64, UINT64);
2018 CREATE_USERIALIZATION (ulong, ULONG);
2024 gst_value_compare_double (const GValue * value1, const GValue * value2)
2026 if (value1->data[0].v_double > value2->data[0].v_double)
2027 return GST_VALUE_GREATER_THAN;
2028 if (value1->data[0].v_double < value2->data[0].v_double)
2029 return GST_VALUE_LESS_THAN;
2030 if (value1->data[0].v_double == value2->data[0].v_double)
2031 return GST_VALUE_EQUAL;
2032 return GST_VALUE_UNORDERED;
2036 gst_value_serialize_double (const GValue * value)
2038 gchar d[G_ASCII_DTOSTR_BUF_SIZE];
2040 g_ascii_dtostr (d, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_double);
2041 return g_strdup (d);
2045 gst_value_deserialize_double (GValue * dest, const gchar * s)
2048 gboolean ret = FALSE;
2051 x = g_ascii_strtod (s, &end);
2055 if (g_ascii_strcasecmp (s, "min") == 0) {
2058 } else if (g_ascii_strcasecmp (s, "max") == 0) {
2064 g_value_set_double (dest, x);
2074 gst_value_compare_float (const GValue * value1, const GValue * value2)
2076 if (value1->data[0].v_float > value2->data[0].v_float)
2077 return GST_VALUE_GREATER_THAN;
2078 if (value1->data[0].v_float < value2->data[0].v_float)
2079 return GST_VALUE_LESS_THAN;
2080 if (value1->data[0].v_float == value2->data[0].v_float)
2081 return GST_VALUE_EQUAL;
2082 return GST_VALUE_UNORDERED;
2086 gst_value_serialize_float (const GValue * value)
2088 gchar d[G_ASCII_DTOSTR_BUF_SIZE];
2090 g_ascii_dtostr (d, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_float);
2091 return g_strdup (d);
2095 gst_value_deserialize_float (GValue * dest, const gchar * s)
2098 gboolean ret = FALSE;
2101 x = g_ascii_strtod (s, &end);
2105 if (g_ascii_strcasecmp (s, "min") == 0) {
2108 } else if (g_ascii_strcasecmp (s, "max") == 0) {
2113 if (x > G_MAXFLOAT || x < -G_MAXFLOAT)
2116 g_value_set_float (dest, (float) x);
2126 gst_value_compare_string (const GValue * value1, const GValue * value2)
2128 if (G_UNLIKELY (!value1->data[0].v_pointer || !value2->data[0].v_pointer)) {
2129 /* if only one is NULL, no match - otherwise both NULL == EQUAL */
2130 if (value1->data[0].v_pointer != value2->data[0].v_pointer)
2131 return GST_VALUE_UNORDERED;
2133 gint x = strcmp (value1->data[0].v_pointer, value2->data[0].v_pointer);
2136 return GST_VALUE_LESS_THAN;
2138 return GST_VALUE_GREATER_THAN;
2141 return GST_VALUE_EQUAL;
2145 gst_string_measure_wrapping (const gchar * s)
2148 gboolean wrap = FALSE;
2150 if (G_UNLIKELY (s == NULL))
2153 /* Special case: the actual string NULL needs wrapping */
2154 if (G_UNLIKELY (strcmp (s, "NULL") == 0))
2159 if (GST_ASCII_IS_STRING (*s)) {
2161 } else if (*s < 0x20 || *s >= 0x7f) {
2171 /* Wrap the string if we found something that needs
2172 * wrapping, or the empty string (len == 0) */
2173 return (wrap || len == 0) ? len : -1;
2177 gst_string_wrap_inner (const gchar * s, gint len)
2181 e = d = g_malloc (len + 3);
2185 if (GST_ASCII_IS_STRING (*s)) {
2187 } else if (*s < 0x20 || *s >= 0x7f) {
2189 *e++ = '0' + ((*(guchar *) s) >> 6);
2190 *e++ = '0' + (((*s) >> 3) & 0x7);
2191 *e++ = '0' + ((*s++) & 0x7);
2200 g_assert (e - d <= len + 3);
2204 /* Do string wrapping/escaping */
2206 gst_string_wrap (const gchar * s)
2208 gint len = gst_string_measure_wrapping (s);
2210 if (G_LIKELY (len < 0))
2211 return g_strdup (s);
2213 return gst_string_wrap_inner (s, len);
2216 /* Same as above, but take ownership of the string */
2218 gst_string_take_and_wrap (gchar * s)
2221 gint len = gst_string_measure_wrapping (s);
2223 if (G_LIKELY (len < 0))
2226 out = gst_string_wrap_inner (s, len);
2233 * This function takes a string delimited with double quotes (")
2234 * and unescapes any \xxx octal numbers.
2236 * If sequences of \y are found where y is not in the range of
2237 * 0->3, y is copied unescaped.
2239 * If \xyy is found where x is an octal number but y is not, an
2240 * error is encountered and NULL is returned.
2242 * the input string must be \0 terminated.
2245 gst_string_unwrap (const gchar * s)
2248 gchar *read, *write;
2250 /* NULL string returns NULL */
2254 /* strings not starting with " are invalid */
2258 /* make copy of original string to hold the result. This
2259 * string will always be smaller than the original */
2264 /* need to move to the next position as we parsed the " */
2268 if (GST_ASCII_IS_STRING (*read)) {
2269 /* normal chars are just copied */
2271 } else if (*read == '"') {
2272 /* quote marks end of string */
2274 } else if (*read == '\\') {
2275 /* got an escape char, move to next position to read a tripplet
2276 * of octal numbers */
2278 /* is the next char a possible first octal number? */
2279 if (*read >= '0' && *read <= '3') {
2280 /* parse other 2 numbers, if one of them is not in the range of
2281 * an octal number, we error. We also catch the case where a zero
2282 * byte is found here. */
2283 if (read[1] < '0' || read[1] > '7' || read[2] < '0' || read[2] > '7')
2286 /* now convert the octal number to a byte again. */
2287 *write++ = ((read[0] - '0') << 6) +
2288 ((read[1] - '0') << 3) + (read[2] - '0');
2292 /* if we run into a \0 here, we definately won't get a quote later */
2296 /* else copy \X sequence */
2300 /* weird character, error */
2304 /* if the string is not ending in " and zero terminated, we error */
2305 if (*read != '"' || read[1] != '\0')
2308 /* null terminate result string and return */
2318 gst_value_serialize_string (const GValue * value)
2320 return gst_string_wrap (value->data[0].v_pointer);
2324 gst_value_deserialize_string (GValue * dest, const gchar * s)
2326 if (G_UNLIKELY (strcmp (s, "NULL") == 0)) {
2327 g_value_set_string (dest, NULL);
2329 } else if (G_LIKELY (*s != '"')) {
2330 if (!g_utf8_validate (s, -1, NULL))
2332 g_value_set_string (dest, s);
2335 gchar *str = gst_string_unwrap (s);
2336 if (G_UNLIKELY (!str))
2338 g_value_take_string (dest, str);
2349 gst_value_compare_enum (const GValue * value1, const GValue * value2)
2351 GEnumValue *en1, *en2;
2352 GEnumClass *klass1 = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value1));
2353 GEnumClass *klass2 = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value2));
2355 g_return_val_if_fail (klass1, GST_VALUE_UNORDERED);
2356 g_return_val_if_fail (klass2, GST_VALUE_UNORDERED);
2357 en1 = g_enum_get_value (klass1, g_value_get_enum (value1));
2358 en2 = g_enum_get_value (klass2, g_value_get_enum (value2));
2359 g_type_class_unref (klass1);
2360 g_type_class_unref (klass2);
2361 g_return_val_if_fail (en1, GST_VALUE_UNORDERED);
2362 g_return_val_if_fail (en2, GST_VALUE_UNORDERED);
2363 if (en1->value < en2->value)
2364 return GST_VALUE_LESS_THAN;
2365 if (en1->value > en2->value)
2366 return GST_VALUE_GREATER_THAN;
2368 return GST_VALUE_EQUAL;
2372 gst_value_serialize_enum (const GValue * value)
2375 GEnumClass *klass = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value));
2377 g_return_val_if_fail (klass, NULL);
2378 en = g_enum_get_value (klass, g_value_get_enum (value));
2379 g_type_class_unref (klass);
2381 /* might be one of the custom formats registered later */
2382 if (G_UNLIKELY (en == NULL && G_VALUE_TYPE (value) == GST_TYPE_FORMAT)) {
2383 const GstFormatDefinition *format_def;
2385 format_def = gst_format_get_details (g_value_get_enum (value));
2386 g_return_val_if_fail (format_def != NULL, NULL);
2387 return g_strdup (format_def->description);
2390 g_return_val_if_fail (en, NULL);
2391 return g_strdup (en->value_name);
2395 gst_value_deserialize_enum_iter_cmp (const GstFormatDefinition * format_def,
2398 if (g_ascii_strcasecmp (s, format_def->nick) == 0)
2401 return g_ascii_strcasecmp (s, format_def->description);
2405 gst_value_deserialize_enum (GValue * dest, const gchar * s)
2408 gchar *endptr = NULL;
2409 GEnumClass *klass = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (dest));
2411 g_return_val_if_fail (klass, FALSE);
2412 if (!(en = g_enum_get_value_by_name (klass, s))) {
2413 if (!(en = g_enum_get_value_by_nick (klass, s))) {
2414 gint i = strtol (s, &endptr, 0);
2416 if (endptr && *endptr == '\0') {
2417 en = g_enum_get_value (klass, i);
2421 g_type_class_unref (klass);
2423 /* might be one of the custom formats registered later */
2424 if (G_UNLIKELY (en == NULL && G_VALUE_TYPE (dest) == GST_TYPE_FORMAT)) {
2425 const GstFormatDefinition *format_def;
2428 iter = gst_format_iterate_definitions ();
2430 format_def = gst_iterator_find_custom (iter,
2431 (GCompareFunc) gst_value_deserialize_enum_iter_cmp, (gpointer) s);
2433 g_return_val_if_fail (format_def != NULL, FALSE);
2434 g_value_set_enum (dest, (gint) format_def->value);
2435 gst_iterator_free (iter);
2439 g_return_val_if_fail (en, FALSE);
2440 g_value_set_enum (dest, en->value);
2448 /* we just compare the value here */
2450 gst_value_compare_flags (const GValue * value1, const GValue * value2)
2453 GFlagsClass *klass1 =
2454 (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value1));
2455 GFlagsClass *klass2 =
2456 (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value2));
2458 g_return_val_if_fail (klass1, GST_VALUE_UNORDERED);
2459 g_return_val_if_fail (klass2, GST_VALUE_UNORDERED);
2460 fl1 = g_value_get_flags (value1);
2461 fl2 = g_value_get_flags (value2);
2462 g_type_class_unref (klass1);
2463 g_type_class_unref (klass2);
2465 return GST_VALUE_LESS_THAN;
2467 return GST_VALUE_GREATER_THAN;
2469 return GST_VALUE_EQUAL;
2472 /* the different flags are serialized separated with a + */
2474 gst_value_serialize_flags (const GValue * value)
2478 GFlagsClass *klass = (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value));
2479 gchar *result, *tmp;
2480 gboolean first = TRUE;
2482 g_return_val_if_fail (klass, NULL);
2484 flags = g_value_get_flags (value);
2486 /* if no flags are set, try to serialize to the _NONE string */
2488 fl = g_flags_get_first_value (klass, flags);
2489 return g_strdup (fl->value_name);
2492 /* some flags are set, so serialize one by one */
2493 result = g_strdup ("");
2495 fl = g_flags_get_first_value (klass, flags);
2497 tmp = g_strconcat (result, (first ? "" : "+"), fl->value_name, NULL);
2503 flags &= ~fl->value;
2506 g_type_class_unref (klass);
2512 gst_value_deserialize_flags (GValue * dest, const gchar * s)
2515 gchar *endptr = NULL;
2516 GFlagsClass *klass = (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (dest));
2521 g_return_val_if_fail (klass, FALSE);
2523 /* split into parts delimited with + */
2524 split = g_strsplit (s, "+", 0);
2528 /* loop over each part */
2530 if (!(fl = g_flags_get_value_by_name (klass, split[i]))) {
2531 if (!(fl = g_flags_get_value_by_nick (klass, split[i]))) {
2532 gint val = strtol (split[i], &endptr, 0);
2534 /* just or numeric value */
2535 if (endptr && *endptr == '\0') {
2546 g_type_class_unref (klass);
2547 g_value_set_flags (dest, flags);
2557 gst_value_union_int_int_range (GValue * dest, const GValue * src1,
2558 const GValue * src2)
2560 if (src2->data[0].v_int <= src1->data[0].v_int &&
2561 src2->data[1].v_int >= src1->data[0].v_int) {
2562 gst_value_init_and_copy (dest, src2);
2569 gst_value_union_int_range_int_range (GValue * dest, const GValue * src1,
2570 const GValue * src2)
2575 min = MAX (src1->data[0].v_int, src2->data[0].v_int);
2576 max = MIN (src1->data[1].v_int, src2->data[1].v_int);
2579 g_value_init (dest, GST_TYPE_INT_RANGE);
2580 gst_value_set_int_range (dest,
2581 MIN (src1->data[0].v_int, src2->data[0].v_int),
2582 MAX (src1->data[1].v_int, src2->data[1].v_int));
2594 gst_value_intersect_int_int_range (GValue * dest, const GValue * src1,
2595 const GValue * src2)
2597 if (src2->data[0].v_int <= src1->data[0].v_int &&
2598 src2->data[1].v_int >= src1->data[0].v_int) {
2599 gst_value_init_and_copy (dest, src1);
2607 gst_value_intersect_int_range_int_range (GValue * dest, const GValue * src1,
2608 const GValue * src2)
2613 min = MAX (src1->data[0].v_int, src2->data[0].v_int);
2614 max = MIN (src1->data[1].v_int, src2->data[1].v_int);
2617 g_value_init (dest, GST_TYPE_INT_RANGE);
2618 gst_value_set_int_range (dest, min, max);
2622 g_value_init (dest, G_TYPE_INT);
2623 g_value_set_int (dest, min);
2631 gst_value_intersect_int64_int64_range (GValue * dest, const GValue * src1,
2632 const GValue * src2)
2634 if (src2->data[0].v_int64 <= src1->data[0].v_int64 &&
2635 src2->data[1].v_int64 >= src1->data[0].v_int64) {
2636 gst_value_init_and_copy (dest, src1);
2644 gst_value_intersect_int64_range_int64_range (GValue * dest, const GValue * src1,
2645 const GValue * src2)
2650 min = MAX (src1->data[0].v_int64, src2->data[0].v_int64);
2651 max = MIN (src1->data[1].v_int64, src2->data[1].v_int64);
2654 g_value_init (dest, GST_TYPE_INT64_RANGE);
2655 gst_value_set_int64_range (dest, min, max);
2659 g_value_init (dest, G_TYPE_INT64);
2660 g_value_set_int64 (dest, min);
2668 gst_value_intersect_double_double_range (GValue * dest, const GValue * src1,
2669 const GValue * src2)
2671 if (src2->data[0].v_double <= src1->data[0].v_double &&
2672 src2->data[1].v_double >= src1->data[0].v_double) {
2673 gst_value_init_and_copy (dest, src1);
2681 gst_value_intersect_double_range_double_range (GValue * dest,
2682 const GValue * src1, const GValue * src2)
2687 min = MAX (src1->data[0].v_double, src2->data[0].v_double);
2688 max = MIN (src1->data[1].v_double, src2->data[1].v_double);
2691 g_value_init (dest, GST_TYPE_DOUBLE_RANGE);
2692 gst_value_set_double_range (dest, min, max);
2696 g_value_init (dest, G_TYPE_DOUBLE);
2697 g_value_set_int (dest, (int) min);
2705 gst_value_intersect_list (GValue * dest, const GValue * value1,
2706 const GValue * value2)
2709 GValue intersection = { 0, };
2710 gboolean ret = FALSE;
2712 size = VALUE_LIST_SIZE (value1);
2713 for (i = 0; i < size; i++) {
2714 const GValue *cur = VALUE_LIST_GET_VALUE (value1, i);
2716 if (gst_value_intersect (&intersection, cur, value2)) {
2719 gst_value_init_and_copy (dest, &intersection);
2721 } else if (GST_VALUE_HOLDS_LIST (dest)) {
2722 gst_value_list_append_value (dest, &intersection);
2724 GValue temp = { 0, };
2726 gst_value_init_and_copy (&temp, dest);
2727 g_value_unset (dest);
2728 gst_value_list_concat (dest, &temp, &intersection);
2729 g_value_unset (&temp);
2731 g_value_unset (&intersection);
2739 gst_value_intersect_array (GValue * dest, const GValue * src1,
2740 const GValue * src2)
2746 /* only works on similar-sized arrays */
2747 size = gst_value_array_get_size (src1);
2748 if (size != gst_value_array_get_size (src2))
2750 g_value_init (dest, GST_TYPE_ARRAY);
2752 for (n = 0; n < size; n++) {
2753 if (!gst_value_intersect (&val, gst_value_array_get_value (src1, n),
2754 gst_value_array_get_value (src2, n))) {
2755 g_value_unset (dest);
2758 gst_value_array_append_value (dest, &val);
2759 g_value_unset (&val);
2766 gst_value_intersect_fraction_fraction_range (GValue * dest, const GValue * src1,
2767 const GValue * src2)
2771 GstValueCompareFunc compare;
2773 vals = src2->data[0].v_pointer;
2778 if ((compare = gst_value_get_compare_func (src1))) {
2779 res1 = gst_value_compare_with_func (&vals[0], src1, compare);
2780 res2 = gst_value_compare_with_func (&vals[1], src1, compare);
2782 if ((res1 == GST_VALUE_EQUAL || res1 == GST_VALUE_LESS_THAN) &&
2783 (res2 == GST_VALUE_EQUAL || res2 == GST_VALUE_GREATER_THAN)) {
2784 gst_value_init_and_copy (dest, src1);
2793 gst_value_intersect_fraction_range_fraction_range (GValue * dest,
2794 const GValue * src1, const GValue * src2)
2799 GValue *vals1, *vals2;
2800 GstValueCompareFunc compare;
2802 vals1 = src1->data[0].v_pointer;
2803 vals2 = src2->data[0].v_pointer;
2804 g_return_val_if_fail (vals1 != NULL && vals2 != NULL, FALSE);
2806 if ((compare = gst_value_get_compare_func (&vals1[0]))) {
2807 /* min = MAX (src1.start, src2.start) */
2808 res = gst_value_compare_with_func (&vals1[0], &vals2[0], compare);
2809 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2810 if (res == GST_VALUE_LESS_THAN)
2811 min = &vals2[0]; /* Take the max of the 2 */
2815 /* max = MIN (src1.end, src2.end) */
2816 res = gst_value_compare_with_func (&vals1[1], &vals2[1], compare);
2817 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2818 if (res == GST_VALUE_GREATER_THAN)
2819 max = &vals2[1]; /* Take the min of the 2 */
2823 res = gst_value_compare_with_func (min, max, compare);
2824 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2825 if (res == GST_VALUE_LESS_THAN) {
2826 g_value_init (dest, GST_TYPE_FRACTION_RANGE);
2827 vals1 = dest->data[0].v_pointer;
2828 g_value_copy (min, &vals1[0]);
2829 g_value_copy (max, &vals1[1]);
2832 if (res == GST_VALUE_EQUAL) {
2833 gst_value_init_and_copy (dest, min);
2846 gst_value_subtract_int_int_range (GValue * dest, const GValue * minuend,
2847 const GValue * subtrahend)
2849 gint min = gst_value_get_int_range_min (subtrahend);
2850 gint max = gst_value_get_int_range_max (subtrahend);
2851 gint val = g_value_get_int (minuend);
2853 /* subtracting a range from an int only works if the int is not in the
2855 if (val < min || val > max) {
2856 /* and the result is the int */
2857 gst_value_init_and_copy (dest, minuend);
2863 /* creates a new int range based on input values.
2866 gst_value_create_new_range (GValue * dest, gint min1, gint max1, gint min2,
2871 GValue *pv1, *pv2; /* yeah, hungarian! */
2873 if (min1 <= max1 && min2 <= max2) {
2876 } else if (min1 <= max1) {
2879 } else if (min2 <= max2) {
2887 g_value_init (pv1, GST_TYPE_INT_RANGE);
2888 gst_value_set_int_range (pv1, min1, max1);
2889 } else if (min1 == max1) {
2890 g_value_init (pv1, G_TYPE_INT);
2891 g_value_set_int (pv1, min1);
2894 g_value_init (pv2, GST_TYPE_INT_RANGE);
2895 gst_value_set_int_range (pv2, min2, max2);
2896 } else if (min2 == max2) {
2897 g_value_init (pv2, G_TYPE_INT);
2898 g_value_set_int (pv2, min2);
2901 if (min1 <= max1 && min2 <= max2) {
2902 gst_value_list_concat (dest, pv1, pv2);
2903 g_value_unset (pv1);
2904 g_value_unset (pv2);
2910 gst_value_subtract_int_range_int (GValue * dest, const GValue * minuend,
2911 const GValue * subtrahend)
2913 gint min = gst_value_get_int_range_min (minuend);
2914 gint max = gst_value_get_int_range_max (minuend);
2915 gint val = g_value_get_int (subtrahend);
2917 g_return_val_if_fail (min < max, FALSE);
2919 /* value is outside of the range, return range unchanged */
2920 if (val < min || val > max) {
2921 gst_value_init_and_copy (dest, minuend);
2924 /* max must be MAXINT too as val <= max */
2925 if (val == G_MAXINT) {
2929 /* min must be MININT too as val >= max */
2930 if (val == G_MININT) {
2934 gst_value_create_new_range (dest, min, val - 1, val + 1, max);
2940 gst_value_subtract_int_range_int_range (GValue * dest, const GValue * minuend,
2941 const GValue * subtrahend)
2943 gint min1 = gst_value_get_int_range_min (minuend);
2944 gint max1 = gst_value_get_int_range_max (minuend);
2945 gint min2 = gst_value_get_int_range_min (subtrahend);
2946 gint max2 = gst_value_get_int_range_max (subtrahend);
2948 if (max2 == G_MAXINT && min2 == G_MININT) {
2950 } else if (max2 == G_MAXINT) {
2951 return gst_value_create_new_range (dest, min1, MIN (min2 - 1, max1), 1, 0);
2952 } else if (min2 == G_MININT) {
2953 return gst_value_create_new_range (dest, MAX (max2 + 1, min1), max1, 1, 0);
2955 return gst_value_create_new_range (dest, min1, MIN (min2 - 1, max1),
2956 MAX (max2 + 1, min1), max1);
2961 gst_value_subtract_int64_int64_range (GValue * dest, const GValue * minuend,
2962 const GValue * subtrahend)
2964 gint64 min = gst_value_get_int64_range_min (subtrahend);
2965 gint64 max = gst_value_get_int64_range_max (subtrahend);
2966 gint64 val = g_value_get_int64 (minuend);
2968 /* subtracting a range from an int64 only works if the int64 is not in the
2970 if (val < min || val > max) {
2971 /* and the result is the int64 */
2972 gst_value_init_and_copy (dest, minuend);
2978 /* creates a new int64 range based on input values.
2981 gst_value_create_new_int64_range (GValue * dest, gint64 min1, gint64 max1,
2982 gint64 min2, gint64 max2)
2986 GValue *pv1, *pv2; /* yeah, hungarian! */
2988 if (min1 <= max1 && min2 <= max2) {
2991 } else if (min1 <= max1) {
2994 } else if (min2 <= max2) {
3002 g_value_init (pv1, GST_TYPE_INT64_RANGE);
3003 gst_value_set_int64_range (pv1, min1, max1);
3004 } else if (min1 == max1) {
3005 g_value_init (pv1, G_TYPE_INT64);
3006 g_value_set_int64 (pv1, min1);
3009 g_value_init (pv2, GST_TYPE_INT64_RANGE);
3010 gst_value_set_int64_range (pv2, min2, max2);
3011 } else if (min2 == max2) {
3012 g_value_init (pv2, G_TYPE_INT64);
3013 g_value_set_int64 (pv2, min2);
3016 if (min1 <= max1 && min2 <= max2) {
3017 gst_value_list_concat (dest, pv1, pv2);
3018 g_value_unset (pv1);
3019 g_value_unset (pv2);
3025 gst_value_subtract_int64_range_int64 (GValue * dest, const GValue * minuend,
3026 const GValue * subtrahend)
3028 gint64 min = gst_value_get_int64_range_min (minuend);
3029 gint64 max = gst_value_get_int64_range_max (minuend);
3030 gint64 val = g_value_get_int64 (subtrahend);
3032 g_return_val_if_fail (min < max, FALSE);
3034 /* value is outside of the range, return range unchanged */
3035 if (val < min || val > max) {
3036 gst_value_init_and_copy (dest, minuend);
3039 /* max must be MAXINT64 too as val <= max */
3040 if (val == G_MAXINT64) {
3044 /* min must be MININT64 too as val >= max */
3045 if (val == G_MININT64) {
3049 gst_value_create_new_int64_range (dest, min, val - 1, val + 1, max);
3055 gst_value_subtract_int64_range_int64_range (GValue * dest,
3056 const GValue * minuend, const GValue * subtrahend)
3058 gint64 min1 = gst_value_get_int64_range_min (minuend);
3059 gint64 max1 = gst_value_get_int64_range_max (minuend);
3060 gint64 min2 = gst_value_get_int64_range_min (subtrahend);
3061 gint64 max2 = gst_value_get_int64_range_max (subtrahend);
3063 if (max2 == G_MAXINT64 && min2 == G_MININT64) {
3065 } else if (max2 == G_MAXINT64) {
3066 return gst_value_create_new_int64_range (dest, min1, MIN (min2 - 1, max1),
3068 } else if (min2 == G_MININT64) {
3069 return gst_value_create_new_int64_range (dest, MAX (max2 + 1, min1), max1,
3072 return gst_value_create_new_int64_range (dest, min1, MIN (min2 - 1, max1),
3073 MAX (max2 + 1, min1), max1);
3078 gst_value_subtract_double_double_range (GValue * dest, const GValue * minuend,
3079 const GValue * subtrahend)
3081 gdouble min = gst_value_get_double_range_min (subtrahend);
3082 gdouble max = gst_value_get_double_range_max (subtrahend);
3083 gdouble val = g_value_get_double (minuend);
3085 if (val < min || val > max) {
3086 gst_value_init_and_copy (dest, minuend);
3093 gst_value_subtract_double_range_double (GValue * dest, const GValue * minuend,
3094 const GValue * subtrahend)
3096 /* since we don't have open ranges, we cannot create a hole in
3097 * a double range. We return the original range */
3098 gst_value_init_and_copy (dest, minuend);
3103 gst_value_subtract_double_range_double_range (GValue * dest,
3104 const GValue * minuend, const GValue * subtrahend)
3106 /* since we don't have open ranges, we have to approximate */
3107 /* done like with ints */
3108 gdouble min1 = gst_value_get_double_range_min (minuend);
3109 gdouble max2 = gst_value_get_double_range_max (minuend);
3110 gdouble max1 = MIN (gst_value_get_double_range_min (subtrahend), max2);
3111 gdouble min2 = MAX (gst_value_get_double_range_max (subtrahend), min1);
3114 GValue *pv1, *pv2; /* yeah, hungarian! */
3116 if (min1 < max1 && min2 < max2) {
3119 } else if (min1 < max1) {
3122 } else if (min2 < max2) {
3130 g_value_init (pv1, GST_TYPE_DOUBLE_RANGE);
3131 gst_value_set_double_range (pv1, min1, max1);
3134 g_value_init (pv2, GST_TYPE_DOUBLE_RANGE);
3135 gst_value_set_double_range (pv2, min2, max2);
3138 if (min1 < max1 && min2 < max2) {
3139 gst_value_list_concat (dest, pv1, pv2);
3140 g_value_unset (pv1);
3141 g_value_unset (pv2);
3147 gst_value_subtract_from_list (GValue * dest, const GValue * minuend,
3148 const GValue * subtrahend)
3151 GValue subtraction = { 0, };
3152 gboolean ret = FALSE;
3155 ltype = gst_value_list_get_type ();
3157 size = VALUE_LIST_SIZE (minuend);
3158 for (i = 0; i < size; i++) {
3159 const GValue *cur = VALUE_LIST_GET_VALUE (minuend, i);
3161 if (gst_value_subtract (&subtraction, cur, subtrahend)) {
3163 gst_value_init_and_copy (dest, &subtraction);
3165 } else if (G_VALUE_HOLDS (dest, ltype)
3166 && !G_VALUE_HOLDS (&subtraction, ltype)) {
3167 gst_value_list_append_value (dest, &subtraction);
3169 GValue temp = { 0, };
3171 gst_value_init_and_copy (&temp, dest);
3172 g_value_unset (dest);
3173 gst_value_list_concat (dest, &temp, &subtraction);
3174 g_value_unset (&temp);
3176 g_value_unset (&subtraction);
3183 gst_value_subtract_list (GValue * dest, const GValue * minuend,
3184 const GValue * subtrahend)
3187 GValue data[2] = { {0,}, {0,} };
3188 GValue *subtraction = &data[0], *result = &data[1];
3190 gst_value_init_and_copy (result, minuend);
3191 size = VALUE_LIST_SIZE (subtrahend);
3192 for (i = 0; i < size; i++) {
3193 const GValue *cur = VALUE_LIST_GET_VALUE (subtrahend, i);
3195 if (gst_value_subtract (subtraction, result, cur)) {
3196 GValue *temp = result;
3198 result = subtraction;
3200 g_value_unset (subtraction);
3202 g_value_unset (result);
3206 gst_value_init_and_copy (dest, result);
3207 g_value_unset (result);
3212 gst_value_subtract_fraction_fraction_range (GValue * dest,
3213 const GValue * minuend, const GValue * subtrahend)
3215 const GValue *min = gst_value_get_fraction_range_min (subtrahend);
3216 const GValue *max = gst_value_get_fraction_range_max (subtrahend);
3217 GstValueCompareFunc compare;
3219 if ((compare = gst_value_get_compare_func (minuend))) {
3220 /* subtracting a range from an fraction only works if the fraction
3221 * is not in the range */
3222 if (gst_value_compare_with_func (minuend, min, compare) ==
3223 GST_VALUE_LESS_THAN ||
3224 gst_value_compare_with_func (minuend, max, compare) ==
3225 GST_VALUE_GREATER_THAN) {
3226 /* and the result is the value */
3227 gst_value_init_and_copy (dest, minuend);
3235 gst_value_subtract_fraction_range_fraction (GValue * dest,
3236 const GValue * minuend, const GValue * subtrahend)
3238 /* since we don't have open ranges, we cannot create a hole in
3239 * a range. We return the original range */
3240 gst_value_init_and_copy (dest, minuend);
3245 gst_value_subtract_fraction_range_fraction_range (GValue * dest,
3246 const GValue * minuend, const GValue * subtrahend)
3248 /* since we don't have open ranges, we have to approximate */
3249 /* done like with ints and doubles. Creates a list of 2 fraction ranges */
3250 const GValue *min1 = gst_value_get_fraction_range_min (minuend);
3251 const GValue *max2 = gst_value_get_fraction_range_max (minuend);
3252 const GValue *max1 = gst_value_get_fraction_range_min (subtrahend);
3253 const GValue *min2 = gst_value_get_fraction_range_max (subtrahend);
3257 GValue *pv1, *pv2; /* yeah, hungarian! */
3258 GstValueCompareFunc compare;
3260 g_return_val_if_fail (min1 != NULL && max1 != NULL, FALSE);
3261 g_return_val_if_fail (min2 != NULL && max2 != NULL, FALSE);
3263 compare = gst_value_get_compare_func (min1);
3264 g_return_val_if_fail (compare, FALSE);
3266 cmp1 = gst_value_compare_with_func (max2, max1, compare);
3267 g_return_val_if_fail (cmp1 != GST_VALUE_UNORDERED, FALSE);
3268 if (cmp1 == GST_VALUE_LESS_THAN)
3270 cmp1 = gst_value_compare_with_func (min1, min2, compare);
3271 g_return_val_if_fail (cmp1 != GST_VALUE_UNORDERED, FALSE);
3272 if (cmp1 == GST_VALUE_GREATER_THAN)
3275 cmp1 = gst_value_compare_with_func (min1, max1, compare);
3276 cmp2 = gst_value_compare_with_func (min2, max2, compare);
3278 if (cmp1 == GST_VALUE_LESS_THAN && cmp2 == GST_VALUE_LESS_THAN) {
3281 } else if (cmp1 == GST_VALUE_LESS_THAN) {
3284 } else if (cmp2 == GST_VALUE_LESS_THAN) {
3291 if (cmp1 == GST_VALUE_LESS_THAN) {
3292 g_value_init (pv1, GST_TYPE_FRACTION_RANGE);
3293 gst_value_set_fraction_range (pv1, min1, max1);
3295 if (cmp2 == GST_VALUE_LESS_THAN) {
3296 g_value_init (pv2, GST_TYPE_FRACTION_RANGE);
3297 gst_value_set_fraction_range (pv2, min2, max2);
3300 if (cmp1 == GST_VALUE_LESS_THAN && cmp2 == GST_VALUE_LESS_THAN) {
3301 gst_value_list_concat (dest, pv1, pv2);
3302 g_value_unset (pv1);
3303 g_value_unset (pv2);
3314 * gst_value_get_compare_func:
3315 * @value1: a value to get the compare function for
3317 * Determines the compare function to be used with values of the same type as
3318 * @value1. The function can be given to gst_value_compare_with_func().
3320 * Returns: A #GstValueCompareFunc value
3322 static GstValueCompareFunc
3323 gst_value_get_compare_func (const GValue * value1)
3325 GstValueTable *table, *best = NULL;
3329 type1 = G_VALUE_TYPE (value1);
3331 /* this is a fast check */
3332 best = gst_value_hash_lookup_type (type1);
3335 if (G_UNLIKELY (!best || !best->compare)) {
3336 guint len = gst_value_table->len;
3339 for (i = 0; i < len; i++) {
3340 table = &g_array_index (gst_value_table, GstValueTable, i);
3341 if (table->compare && g_type_is_a (type1, table->type)) {
3342 if (!best || g_type_is_a (table->type, best->type))
3347 if (G_LIKELY (best))
3348 return best->compare;
3354 * gst_value_can_compare:
3355 * @value1: a value to compare
3356 * @value2: another value to compare
3358 * Determines if @value1 and @value2 can be compared.
3360 * Returns: TRUE if the values can be compared
3363 gst_value_can_compare (const GValue * value1, const GValue * value2)
3365 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3366 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3368 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3371 return gst_value_get_compare_func (value1) != NULL;
3375 * gst_value_compare:
3376 * @value1: a value to compare
3377 * @value2: another value to compare
3379 * Compares @value1 and @value2. If @value1 and @value2 cannot be
3380 * compared, the function returns GST_VALUE_UNORDERED. Otherwise,
3381 * if @value1 is greater than @value2, GST_VALUE_GREATER_THAN is returned.
3382 * If @value1 is less than @value2, GST_VALUE_LESS_THAN is returned.
3383 * If the values are equal, GST_VALUE_EQUAL is returned.
3385 * Returns: comparison result
3388 gst_value_compare (const GValue * value1, const GValue * value2)
3390 GstValueCompareFunc compare;
3392 g_return_val_if_fail (G_IS_VALUE (value1), GST_VALUE_LESS_THAN);
3393 g_return_val_if_fail (G_IS_VALUE (value2), GST_VALUE_GREATER_THAN);
3395 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3396 return GST_VALUE_UNORDERED;
3398 compare = gst_value_get_compare_func (value1);
3400 return compare (value1, value2);
3403 g_critical ("unable to compare values of type %s\n",
3404 g_type_name (G_VALUE_TYPE (value1)));
3405 return GST_VALUE_UNORDERED;
3409 * gst_value_compare_with_func:
3410 * @value1: a value to compare
3411 * @value2: another value to compare
3412 * @compare: compare function
3414 * Compares @value1 and @value2 using the @compare function. Works like
3415 * gst_value_compare() but allows to save time determining the compare function
3418 * Returns: comparison result
3421 gst_value_compare_with_func (const GValue * value1, const GValue * value2,
3422 GstValueCompareFunc compare)
3426 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3427 return GST_VALUE_UNORDERED;
3429 return compare (value1, value2);
3435 * gst_value_can_union:
3436 * @value1: a value to union
3437 * @value2: another value to union
3439 * Determines if @value1 and @value2 can be non-trivially unioned.
3440 * Any two values can be trivially unioned by adding both of them
3441 * to a GstValueList. However, certain types have the possibility
3442 * to be unioned in a simpler way. For example, an integer range
3443 * and an integer can be unioned if the integer is a subset of the
3444 * integer range. If there is the possibility that two values can
3445 * be unioned, this function returns TRUE.
3447 * Returns: TRUE if there is a function allowing the two values to
3451 gst_value_can_union (const GValue * value1, const GValue * value2)
3453 GstValueUnionInfo *union_info;
3456 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3457 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3459 len = gst_value_union_funcs->len;
3461 for (i = 0; i < len; i++) {
3462 union_info = &g_array_index (gst_value_union_funcs, GstValueUnionInfo, i);
3463 if (union_info->type1 == G_VALUE_TYPE (value1) &&
3464 union_info->type2 == G_VALUE_TYPE (value2))
3466 if (union_info->type1 == G_VALUE_TYPE (value2) &&
3467 union_info->type2 == G_VALUE_TYPE (value1))
3476 * @dest: (out caller-allocates): the destination value
3477 * @value1: a value to union
3478 * @value2: another value to union
3480 * Creates a GValue corresponding to the union of @value1 and @value2.
3482 * Returns: always returns %TRUE
3484 /* FIXME: change return type to 'void'? */
3486 gst_value_union (GValue * dest, const GValue * value1, const GValue * value2)
3488 GstValueUnionInfo *union_info;
3491 g_return_val_if_fail (dest != NULL, FALSE);
3492 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3493 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3495 len = gst_value_union_funcs->len;
3497 for (i = 0; i < len; i++) {
3498 union_info = &g_array_index (gst_value_union_funcs, GstValueUnionInfo, i);
3499 if (union_info->type1 == G_VALUE_TYPE (value1) &&
3500 union_info->type2 == G_VALUE_TYPE (value2)) {
3501 if (union_info->func (dest, value1, value2)) {
3505 if (union_info->type1 == G_VALUE_TYPE (value2) &&
3506 union_info->type2 == G_VALUE_TYPE (value1)) {
3507 if (union_info->func (dest, value2, value1)) {
3513 gst_value_list_concat (dest, value1, value2);
3518 * gst_value_register_union_func:
3519 * @type1: a type to union
3520 * @type2: another type to union
3521 * @func: a function that implments creating a union between the two types
3523 * Registers a union function that can create a union between #GValue items
3524 * of the type @type1 and @type2.
3526 * Union functions should be registered at startup before any pipelines are
3527 * started, as gst_value_register_union_func() is not thread-safe and cannot
3528 * be used at the same time as gst_value_union() or gst_value_can_union().
3531 gst_value_register_union_func (GType type1, GType type2, GstValueUnionFunc func)
3533 GstValueUnionInfo union_info;
3535 union_info.type1 = type1;
3536 union_info.type2 = type2;
3537 union_info.func = func;
3539 g_array_append_val (gst_value_union_funcs, union_info);
3545 * gst_value_can_intersect:
3546 * @value1: a value to intersect
3547 * @value2: another value to intersect
3549 * Determines if intersecting two values will produce a valid result.
3550 * Two values will produce a valid intersection if they have the same
3551 * type, or if there is a method (registered by
3552 * gst_value_register_intersect_func()) to calculate the intersection.
3554 * Returns: TRUE if the values can intersect
3557 gst_value_can_intersect (const GValue * value1, const GValue * value2)
3559 GstValueIntersectInfo *intersect_info;
3561 GType ltype, type1, type2;
3563 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3564 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3566 ltype = gst_value_list_get_type ();
3569 if (G_VALUE_HOLDS (value1, ltype) || G_VALUE_HOLDS (value2, ltype))
3572 type1 = G_VALUE_TYPE (value1);
3573 type2 = G_VALUE_TYPE (value2);
3575 /* practically all GstValue types have a compare function (_can_compare=TRUE)
3576 * GstStructure and GstCaps have npot, but are intersectable */
3580 /* check registered intersect functions */
3581 len = gst_value_intersect_funcs->len;
3582 for (i = 0; i < len; i++) {
3583 intersect_info = &g_array_index (gst_value_intersect_funcs,
3584 GstValueIntersectInfo, i);
3585 if ((intersect_info->type1 == type1 && intersect_info->type2 == type2) ||
3586 (intersect_info->type1 == type2 && intersect_info->type2 == type1))
3590 return gst_value_can_compare (value1, value2);
3594 * gst_value_intersect:
3595 * @dest: (out caller-allocates): a uninitialized #GValue that will hold the calculated
3596 * intersection value
3597 * @value1: a value to intersect
3598 * @value2: another value to intersect
3600 * Calculates the intersection of two values. If the values have
3601 * a non-empty intersection, the value representing the intersection
3602 * is placed in @dest. If the intersection is non-empty, @dest is
3605 * Returns: TRUE if the intersection is non-empty
3608 gst_value_intersect (GValue * dest, const GValue * value1,
3609 const GValue * value2)
3611 GstValueIntersectInfo *intersect_info;
3613 GType ltype, type1, type2;
3615 g_return_val_if_fail (dest != NULL, FALSE);
3616 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3617 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3619 ltype = gst_value_list_get_type ();
3621 /* special cases first */
3622 if (G_VALUE_HOLDS (value1, ltype))
3623 return gst_value_intersect_list (dest, value1, value2);
3624 if (G_VALUE_HOLDS (value2, ltype))
3625 return gst_value_intersect_list (dest, value2, value1);
3627 if (gst_value_compare (value1, value2) == GST_VALUE_EQUAL) {
3628 gst_value_init_and_copy (dest, value1);
3632 type1 = G_VALUE_TYPE (value1);
3633 type2 = G_VALUE_TYPE (value2);
3635 len = gst_value_intersect_funcs->len;
3636 for (i = 0; i < len; i++) {
3637 intersect_info = &g_array_index (gst_value_intersect_funcs,
3638 GstValueIntersectInfo, i);
3639 if (intersect_info->type1 == type1 && intersect_info->type2 == type2) {
3640 return intersect_info->func (dest, value1, value2);
3642 if (intersect_info->type1 == type2 && intersect_info->type2 == type1) {
3643 return intersect_info->func (dest, value2, value1);
3650 * gst_value_register_intersect_func:
3651 * @type1: the first type to intersect
3652 * @type2: the second type to intersect
3653 * @func: the intersection function
3655 * Registers a function that is called to calculate the intersection
3656 * of the values having the types @type1 and @type2.
3658 * Intersect functions should be registered at startup before any pipelines are
3659 * started, as gst_value_register_intersect_func() is not thread-safe and
3660 * cannot be used at the same time as gst_value_intersect() or
3661 * gst_value_can_intersect().
3664 gst_value_register_intersect_func (GType type1, GType type2,
3665 GstValueIntersectFunc func)
3667 GstValueIntersectInfo intersect_info;
3669 intersect_info.type1 = type1;
3670 intersect_info.type2 = type2;
3671 intersect_info.func = func;
3673 g_array_append_val (gst_value_intersect_funcs, intersect_info);
3680 * gst_value_subtract:
3681 * @dest: (out caller-allocates): the destination value for the result if the
3682 * subtraction is not empty
3683 * @minuend: the value to subtract from
3684 * @subtrahend: the value to subtract
3686 * Subtracts @subtrahend from @minuend and stores the result in @dest.
3687 * Note that this means subtraction as in sets, not as in mathematics.
3689 * Returns: %TRUE if the subtraction is not empty
3692 gst_value_subtract (GValue * dest, const GValue * minuend,
3693 const GValue * subtrahend)
3695 GstValueSubtractInfo *info;
3697 GType ltype, mtype, stype;
3699 g_return_val_if_fail (dest != NULL, FALSE);
3700 g_return_val_if_fail (G_IS_VALUE (minuend), FALSE);
3701 g_return_val_if_fail (G_IS_VALUE (subtrahend), FALSE);
3703 ltype = gst_value_list_get_type ();
3705 /* special cases first */
3706 if (G_VALUE_HOLDS (minuend, ltype))
3707 return gst_value_subtract_from_list (dest, minuend, subtrahend);
3708 if (G_VALUE_HOLDS (subtrahend, ltype))
3709 return gst_value_subtract_list (dest, minuend, subtrahend);
3711 mtype = G_VALUE_TYPE (minuend);
3712 stype = G_VALUE_TYPE (subtrahend);
3714 len = gst_value_subtract_funcs->len;
3715 for (i = 0; i < len; i++) {
3716 info = &g_array_index (gst_value_subtract_funcs, GstValueSubtractInfo, i);
3717 if (info->minuend == mtype && info->subtrahend == stype) {
3718 return info->func (dest, minuend, subtrahend);
3722 if (gst_value_compare (minuend, subtrahend) != GST_VALUE_EQUAL) {
3723 gst_value_init_and_copy (dest, minuend);
3732 gst_value_subtract (GValue * dest, const GValue * minuend,
3733 const GValue * subtrahend)
3735 gboolean ret = gst_value_subtract2 (dest, minuend, subtrahend);
3737 g_printerr ("\"%s\" - \"%s\" = \"%s\"\n", gst_value_serialize (minuend),
3738 gst_value_serialize (subtrahend),
3739 ret ? gst_value_serialize (dest) : "---");
3745 * gst_value_can_subtract:
3746 * @minuend: the value to subtract from
3747 * @subtrahend: the value to subtract
3749 * Checks if it's possible to subtract @subtrahend from @minuend.
3751 * Returns: TRUE if a subtraction is possible
3754 gst_value_can_subtract (const GValue * minuend, const GValue * subtrahend)
3756 GstValueSubtractInfo *info;
3758 GType ltype, mtype, stype;
3760 g_return_val_if_fail (G_IS_VALUE (minuend), FALSE);
3761 g_return_val_if_fail (G_IS_VALUE (subtrahend), FALSE);
3763 ltype = gst_value_list_get_type ();
3766 if (G_VALUE_HOLDS (minuend, ltype) || G_VALUE_HOLDS (subtrahend, ltype))
3769 mtype = G_VALUE_TYPE (minuend);
3770 stype = G_VALUE_TYPE (subtrahend);
3772 len = gst_value_subtract_funcs->len;
3773 for (i = 0; i < len; i++) {
3774 info = &g_array_index (gst_value_subtract_funcs, GstValueSubtractInfo, i);
3775 if (info->minuend == mtype && info->subtrahend == stype)
3779 return gst_value_can_compare (minuend, subtrahend);
3783 * gst_value_register_subtract_func:
3784 * @minuend_type: type of the minuend
3785 * @subtrahend_type: type of the subtrahend
3786 * @func: function to use
3788 * Registers @func as a function capable of subtracting the values of
3789 * @subtrahend_type from values of @minuend_type.
3791 * Subtract functions should be registered at startup before any pipelines are
3792 * started, as gst_value_register_subtract_func() is not thread-safe and
3793 * cannot be used at the same time as gst_value_subtract().
3796 gst_value_register_subtract_func (GType minuend_type, GType subtrahend_type,
3797 GstValueSubtractFunc func)
3799 GstValueSubtractInfo info;
3801 /* one type must be unfixed, other subtractions can be done as comparisons */
3802 g_return_if_fail (!gst_type_is_fixed (minuend_type)
3803 || !gst_type_is_fixed (subtrahend_type));
3805 info.minuend = minuend_type;
3806 info.subtrahend = subtrahend_type;
3809 g_array_append_val (gst_value_subtract_funcs, info);
3813 * gst_value_register:
3814 * @table: structure containing functions to register
3816 * Registers functions to perform calculations on #GValue items of a given
3817 * type. Each type can only be added once.
3820 gst_value_register (const GstValueTable * table)
3822 GstValueTable *found;
3824 g_return_if_fail (table != NULL);
3826 g_array_append_val (gst_value_table, *table);
3828 found = gst_value_hash_lookup_type (table->type);
3830 g_warning ("adding type %s multiple times", g_type_name (table->type));
3832 /* FIXME: we're not really doing the const justice, we assume the table is
3834 gst_value_hash_add_type (table->type, table);
3838 * gst_value_init_and_copy:
3839 * @dest: (out caller-allocates): the target value
3840 * @src: the source value
3842 * Initialises the target value to be of the same type as source and then copies
3843 * the contents from source to target.
3846 gst_value_init_and_copy (GValue * dest, const GValue * src)
3848 g_return_if_fail (G_IS_VALUE (src));
3849 g_return_if_fail (dest != NULL);
3851 g_value_init (dest, G_VALUE_TYPE (src));
3852 g_value_copy (src, dest);
3856 * gst_value_serialize:
3857 * @value: a #GValue to serialize
3859 * tries to transform the given @value into a string representation that allows
3860 * getting back this string later on using gst_value_deserialize().
3862 * Free-function: g_free
3864 * Returns: (transfer full): the serialization for @value or NULL if none exists
3867 gst_value_serialize (const GValue * value)
3870 GValue s_val = { 0 };
3871 GstValueTable *table, *best;
3875 g_return_val_if_fail (G_IS_VALUE (value), NULL);
3877 type = G_VALUE_TYPE (value);
3879 best = gst_value_hash_lookup_type (type);
3881 if (G_UNLIKELY (!best || !best->serialize)) {
3882 len = gst_value_table->len;
3884 for (i = 0; i < len; i++) {
3885 table = &g_array_index (gst_value_table, GstValueTable, i);
3886 if (table->serialize && g_type_is_a (type, table->type)) {
3887 if (!best || g_type_is_a (table->type, best->type))
3892 if (G_LIKELY (best))
3893 return best->serialize (value);
3895 g_value_init (&s_val, G_TYPE_STRING);
3896 if (g_value_transform (value, &s_val)) {
3897 s = gst_string_wrap (g_value_get_string (&s_val));
3901 g_value_unset (&s_val);
3907 * gst_value_deserialize:
3908 * @dest: (out caller-allocates): #GValue to fill with contents of
3910 * @src: string to deserialize
3912 * Tries to deserialize a string into the type specified by the given GValue.
3913 * If the operation succeeds, TRUE is returned, FALSE otherwise.
3915 * Returns: TRUE on success
3918 gst_value_deserialize (GValue * dest, const gchar * src)
3920 GstValueTable *table, *best;
3924 g_return_val_if_fail (src != NULL, FALSE);
3925 g_return_val_if_fail (G_IS_VALUE (dest), FALSE);
3927 type = G_VALUE_TYPE (dest);
3929 best = gst_value_hash_lookup_type (type);
3930 if (G_UNLIKELY (!best || !best->deserialize)) {
3931 len = gst_value_table->len;
3933 for (i = 0; i < len; i++) {
3934 table = &g_array_index (gst_value_table, GstValueTable, i);
3935 if (table->deserialize && g_type_is_a (type, table->type)) {
3936 if (!best || g_type_is_a (table->type, best->type))
3941 if (G_LIKELY (best))
3942 return best->deserialize (dest, src);
3948 * gst_value_is_fixed:
3949 * @value: the #GValue to check
3951 * Tests if the given GValue, if available in a GstStructure (or any other
3952 * container) contains a "fixed" (which means: one value) or an "unfixed"
3953 * (which means: multiple possible values, such as data lists or data
3956 * Returns: true if the value is "fixed".
3960 gst_value_is_fixed (const GValue * value)
3964 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
3966 type = G_VALUE_TYPE (value);
3968 /* the most common types are just basic plain glib types */
3969 if (type <= G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
3973 if (type == GST_TYPE_ARRAY) {
3977 /* check recursively */
3978 size = gst_value_array_get_size (value);
3979 for (n = 0; n < size; n++) {
3980 kid = gst_value_array_get_value (value, n);
3981 if (!gst_value_is_fixed (kid))
3986 return gst_type_is_fixed (type);
3993 /* helper functions */
3995 gst_value_init_fraction (GValue * value)
3997 value->data[0].v_int = 0;
3998 value->data[1].v_int = 1;
4002 gst_value_copy_fraction (const GValue * src_value, GValue * dest_value)
4004 dest_value->data[0].v_int = src_value->data[0].v_int;
4005 dest_value->data[1].v_int = src_value->data[1].v_int;
4009 gst_value_collect_fraction (GValue * value, guint n_collect_values,
4010 GTypeCValue * collect_values, guint collect_flags)
4012 if (n_collect_values != 2)
4013 return g_strdup_printf ("not enough value locations for `%s' passed",
4014 G_VALUE_TYPE_NAME (value));
4015 if (collect_values[1].v_int == 0)
4016 return g_strdup_printf ("passed '0' as denominator for `%s'",
4017 G_VALUE_TYPE_NAME (value));
4018 if (collect_values[0].v_int < -G_MAXINT)
4021 ("passed value smaller than -G_MAXINT as numerator for `%s'",
4022 G_VALUE_TYPE_NAME (value));
4023 if (collect_values[1].v_int < -G_MAXINT)
4026 ("passed value smaller than -G_MAXINT as denominator for `%s'",
4027 G_VALUE_TYPE_NAME (value));
4029 gst_value_set_fraction (value,
4030 collect_values[0].v_int, collect_values[1].v_int);
4036 gst_value_lcopy_fraction (const GValue * value, guint n_collect_values,
4037 GTypeCValue * collect_values, guint collect_flags)
4039 gint *numerator = collect_values[0].v_pointer;
4040 gint *denominator = collect_values[1].v_pointer;
4043 return g_strdup_printf ("numerator for `%s' passed as NULL",
4044 G_VALUE_TYPE_NAME (value));
4046 return g_strdup_printf ("denominator for `%s' passed as NULL",
4047 G_VALUE_TYPE_NAME (value));
4049 *numerator = value->data[0].v_int;
4050 *denominator = value->data[1].v_int;
4056 * gst_value_set_fraction:
4057 * @value: a GValue initialized to #GST_TYPE_FRACTION
4058 * @numerator: the numerator of the fraction
4059 * @denominator: the denominator of the fraction
4061 * Sets @value to the fraction specified by @numerator over @denominator.
4062 * The fraction gets reduced to the smallest numerator and denominator,
4063 * and if necessary the sign is moved to the numerator.
4066 gst_value_set_fraction (GValue * value, gint numerator, gint denominator)
4070 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (value));
4071 g_return_if_fail (denominator != 0);
4072 g_return_if_fail (denominator >= -G_MAXINT);
4073 g_return_if_fail (numerator >= -G_MAXINT);
4075 /* normalize sign */
4076 if (denominator < 0) {
4077 numerator = -numerator;
4078 denominator = -denominator;
4081 /* check for reduction */
4082 gcd = gst_util_greatest_common_divisor (numerator, denominator);
4088 g_assert (denominator > 0);
4090 value->data[0].v_int = numerator;
4091 value->data[1].v_int = denominator;
4095 * gst_value_get_fraction_numerator:
4096 * @value: a GValue initialized to #GST_TYPE_FRACTION
4098 * Gets the numerator of the fraction specified by @value.
4100 * Returns: the numerator of the fraction.
4103 gst_value_get_fraction_numerator (const GValue * value)
4105 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (value), 0);
4107 return value->data[0].v_int;
4111 * gst_value_get_fraction_denominator:
4112 * @value: a GValue initialized to #GST_TYPE_FRACTION
4114 * Gets the denominator of the fraction specified by @value.
4116 * Returns: the denominator of the fraction.
4119 gst_value_get_fraction_denominator (const GValue * value)
4121 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (value), 1);
4123 return value->data[1].v_int;
4127 * gst_value_fraction_multiply:
4128 * @product: a GValue initialized to #GST_TYPE_FRACTION
4129 * @factor1: a GValue initialized to #GST_TYPE_FRACTION
4130 * @factor2: a GValue initialized to #GST_TYPE_FRACTION
4132 * Multiplies the two #GValue items containing a #GST_TYPE_FRACTION and sets
4133 * @product to the product of the two fractions.
4135 * Returns: FALSE in case of an error (like integer overflow), TRUE otherwise.
4138 gst_value_fraction_multiply (GValue * product, const GValue * factor1,
4139 const GValue * factor2)
4141 gint n1, n2, d1, d2;
4144 g_return_val_if_fail (product != NULL, FALSE);
4145 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (factor1), FALSE);
4146 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (factor2), FALSE);
4148 n1 = factor1->data[0].v_int;
4149 n2 = factor2->data[0].v_int;
4150 d1 = factor1->data[1].v_int;
4151 d2 = factor2->data[1].v_int;
4153 if (!gst_util_fraction_multiply (n1, d1, n2, d2, &res_n, &res_d))
4156 gst_value_set_fraction (product, res_n, res_d);
4162 * gst_value_fraction_subtract:
4163 * @dest: a GValue initialized to #GST_TYPE_FRACTION
4164 * @minuend: a GValue initialized to #GST_TYPE_FRACTION
4165 * @subtrahend: a GValue initialized to #GST_TYPE_FRACTION
4167 * Subtracts the @subtrahend from the @minuend and sets @dest to the result.
4169 * Returns: FALSE in case of an error (like integer overflow), TRUE otherwise.
4172 gst_value_fraction_subtract (GValue * dest,
4173 const GValue * minuend, const GValue * subtrahend)
4175 gint n1, n2, d1, d2;
4178 g_return_val_if_fail (dest != NULL, FALSE);
4179 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (minuend), FALSE);
4180 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (subtrahend), FALSE);
4182 n1 = minuend->data[0].v_int;
4183 n2 = subtrahend->data[0].v_int;
4184 d1 = minuend->data[1].v_int;
4185 d2 = subtrahend->data[1].v_int;
4187 if (!gst_util_fraction_add (n1, d1, -n2, d2, &res_n, &res_d))
4189 gst_value_set_fraction (dest, res_n, res_d);
4195 gst_value_serialize_fraction (const GValue * value)
4197 gint32 numerator = value->data[0].v_int;
4198 gint32 denominator = value->data[1].v_int;
4199 gboolean positive = TRUE;
4201 /* get the sign and make components absolute */
4202 if (numerator < 0) {
4203 numerator = -numerator;
4204 positive = !positive;
4206 if (denominator < 0) {
4207 denominator = -denominator;
4208 positive = !positive;
4211 return g_strdup_printf ("%s%d/%d",
4212 positive ? "" : "-", numerator, denominator);
4216 gst_value_deserialize_fraction (GValue * dest, const gchar * s)
4221 if (G_UNLIKELY (s == NULL))
4224 if (G_UNLIKELY (dest == NULL || !GST_VALUE_HOLDS_FRACTION (dest)))
4227 if (sscanf (s, "%d/%d%n", &num, &den, &num_chars) >= 2) {
4228 if (s[num_chars] != 0)
4233 gst_value_set_fraction (dest, num, den);
4235 } else if (g_ascii_strcasecmp (s, "1/max") == 0) {
4236 gst_value_set_fraction (dest, 1, G_MAXINT);
4238 } else if (sscanf (s, "%d%n", &num, &num_chars) >= 1) {
4239 if (s[num_chars] != 0)
4241 gst_value_set_fraction (dest, num, 1);
4243 } else if (g_ascii_strcasecmp (s, "min") == 0) {
4244 gst_value_set_fraction (dest, -G_MAXINT, 1);
4246 } else if (g_ascii_strcasecmp (s, "max") == 0) {
4247 gst_value_set_fraction (dest, G_MAXINT, 1);
4255 gst_value_transform_fraction_string (const GValue * src_value,
4256 GValue * dest_value)
4258 dest_value->data[0].v_pointer = gst_value_serialize_fraction (src_value);
4262 gst_value_transform_string_fraction (const GValue * src_value,
4263 GValue * dest_value)
4265 if (!gst_value_deserialize_fraction (dest_value,
4266 src_value->data[0].v_pointer))
4267 /* If the deserialize fails, ensure we leave the fraction in a
4268 * valid, if incorrect, state */
4269 gst_value_set_fraction (dest_value, 0, 1);
4273 gst_value_transform_double_fraction (const GValue * src_value,
4274 GValue * dest_value)
4276 gdouble src = g_value_get_double (src_value);
4279 gst_util_double_to_fraction (src, &n, &d);
4280 gst_value_set_fraction (dest_value, n, d);
4284 gst_value_transform_float_fraction (const GValue * src_value,
4285 GValue * dest_value)
4287 gfloat src = g_value_get_float (src_value);
4290 gst_util_double_to_fraction (src, &n, &d);
4291 gst_value_set_fraction (dest_value, n, d);
4295 gst_value_transform_fraction_double (const GValue * src_value,
4296 GValue * dest_value)
4298 dest_value->data[0].v_double = ((double) src_value->data[0].v_int) /
4299 ((double) src_value->data[1].v_int);
4303 gst_value_transform_fraction_float (const GValue * src_value,
4304 GValue * dest_value)
4306 dest_value->data[0].v_float = ((float) src_value->data[0].v_int) /
4307 ((float) src_value->data[1].v_int);
4311 gst_value_compare_fraction (const GValue * value1, const GValue * value2)
4317 n1 = value1->data[0].v_int;
4318 n2 = value2->data[0].v_int;
4319 d1 = value1->data[1].v_int;
4320 d2 = value2->data[1].v_int;
4322 /* fractions are reduced when set, so we can quickly see if they're equal */
4323 if (n1 == n2 && d1 == d2)
4324 return GST_VALUE_EQUAL;
4326 if (d1 == 0 && d2 == 0)
4327 return GST_VALUE_UNORDERED;
4329 return GST_VALUE_GREATER_THAN;
4331 return GST_VALUE_LESS_THAN;
4333 ret = gst_util_fraction_compare (n1, d1, n2, d2);
4335 return GST_VALUE_LESS_THAN;
4337 return GST_VALUE_GREATER_THAN;
4339 /* Equality can't happen here because we check for that
4341 g_return_val_if_reached (GST_VALUE_UNORDERED);
4349 * gst_value_set_date:
4350 * @value: a GValue initialized to GST_TYPE_DATE
4351 * @date: the date to set the value to
4353 * Sets the contents of @value to coorespond to @date. The actual
4354 * #GDate structure is copied before it is used.
4357 gst_value_set_date (GValue * value, const GDate * date)
4359 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_DATE);
4360 g_return_if_fail (g_date_valid (date));
4362 g_value_set_boxed (value, date);
4366 * gst_value_get_date:
4367 * @value: a GValue initialized to GST_TYPE_DATE
4369 * Gets the contents of @value.
4371 * Returns: (transfer none): the contents of @value
4374 gst_value_get_date (const GValue * value)
4376 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_DATE, NULL);
4378 return (const GDate *) g_value_get_boxed (value);
4382 gst_date_copy (gpointer boxed)
4384 const GDate *date = (const GDate *) boxed;
4386 if (!g_date_valid (date)) {
4387 GST_WARNING ("invalid GDate");
4391 return g_date_new_julian (g_date_get_julian (date));
4395 gst_value_compare_date (const GValue * value1, const GValue * value2)
4397 const GDate *date1 = (const GDate *) g_value_get_boxed (value1);
4398 const GDate *date2 = (const GDate *) g_value_get_boxed (value2);
4402 return GST_VALUE_EQUAL;
4404 if ((date1 == NULL || !g_date_valid (date1))
4405 && (date2 != NULL && g_date_valid (date2))) {
4406 return GST_VALUE_LESS_THAN;
4409 if ((date2 == NULL || !g_date_valid (date2))
4410 && (date1 != NULL && g_date_valid (date1))) {
4411 return GST_VALUE_GREATER_THAN;
4414 if (date1 == NULL || date2 == NULL || !g_date_valid (date1)
4415 || !g_date_valid (date2)) {
4416 return GST_VALUE_UNORDERED;
4419 j1 = g_date_get_julian (date1);
4420 j2 = g_date_get_julian (date2);
4423 return GST_VALUE_EQUAL;
4425 return GST_VALUE_LESS_THAN;
4427 return GST_VALUE_GREATER_THAN;
4431 gst_value_serialize_date (const GValue * val)
4433 const GDate *date = (const GDate *) g_value_get_boxed (val);
4435 if (date == NULL || !g_date_valid (date))
4436 return g_strdup ("9999-99-99");
4438 return g_strdup_printf ("%04u-%02u-%02u", g_date_get_year (date),
4439 g_date_get_month (date), g_date_get_day (date));
4443 gst_value_deserialize_date (GValue * dest, const gchar * s)
4445 guint year, month, day;
4447 if (!s || sscanf (s, "%04u-%02u-%02u", &year, &month, &day) != 3)
4450 if (!g_date_valid_dmy (day, month, year))
4453 g_value_take_boxed (dest, g_date_new_dmy (day, month, year));
4462 gst_value_compare_date_time (const GValue * value1, const GValue * value2)
4464 const GstDateTime *date1 = (const GstDateTime *) g_value_get_boxed (value1);
4465 const GstDateTime *date2 = (const GstDateTime *) g_value_get_boxed (value2);
4469 return GST_VALUE_EQUAL;
4471 if ((date1 == NULL) && (date2 != NULL)) {
4472 return GST_VALUE_LESS_THAN;
4474 if ((date2 == NULL) && (date1 != NULL)) {
4475 return GST_VALUE_LESS_THAN;
4478 ret = priv_gst_date_time_compare (date1, date2);
4481 return GST_VALUE_EQUAL;
4483 return GST_VALUE_LESS_THAN;
4485 return GST_VALUE_GREATER_THAN;
4489 gst_value_serialize_date_time (const GValue * val)
4491 GstDateTime *date = (GstDateTime *) g_value_get_boxed (val);
4493 gint tzhour, tzminute;
4496 return g_strdup ("null");
4498 offset = gst_date_time_get_time_zone_offset (date);
4500 tzhour = (gint) ABS (offset);
4501 tzminute = (gint) ((ABS (offset) - tzhour) * 60);
4503 return g_strdup_printf ("\"%04d-%02d-%02dT%02d:%02d:%02d.%06d"
4504 "%c%02d%02d\"", gst_date_time_get_year (date),
4505 gst_date_time_get_month (date), gst_date_time_get_day (date),
4506 gst_date_time_get_hour (date), gst_date_time_get_minute (date),
4507 gst_date_time_get_second (date), gst_date_time_get_microsecond (date),
4508 offset >= 0 ? '+' : '-', tzhour, tzminute);
4512 gst_value_deserialize_date_time (GValue * dest, const gchar * s)
4514 gint year, month, day, hour, minute, second, usecond;
4517 gfloat tzoffset = 0;
4520 if (!s || strcmp (s, "null") == 0) {
4524 ret = sscanf (s, "%04d-%02d-%02dT%02d:%02d:%02d.%06d%c%04d",
4525 &year, &month, &day, &hour, &minute, &second, &usecond, &signal, &offset);
4527 tzoffset = (offset / 100) + ((offset % 100) / 60.0);
4529 tzoffset = -tzoffset;
4533 g_value_take_boxed (dest, gst_date_time_new (tzoffset, year, month, day, hour,
4534 minute, second + (usecond / 1000000.0)));
4539 gst_value_transform_date_string (const GValue * src_value, GValue * dest_value)
4541 dest_value->data[0].v_pointer = gst_value_serialize_date (src_value);
4545 gst_value_transform_string_date (const GValue * src_value, GValue * dest_value)
4547 gst_value_deserialize_date (dest_value, src_value->data[0].v_pointer);
4551 gst_value_transform_object_string (const GValue * src_value,
4552 GValue * dest_value)
4557 obj = g_value_get_object (src_value);
4560 g_strdup_printf ("(%s) %s", G_OBJECT_TYPE_NAME (obj),
4561 GST_OBJECT_NAME (obj));
4563 str = g_strdup ("NULL");
4566 dest_value->data[0].v_pointer = str;
4569 static GTypeInfo _info = {
4582 static GTypeFundamentalInfo _finfo = {
4586 #define FUNC_VALUE_GET_TYPE(type, name) \
4587 GType gst_ ## type ## _get_type (void) \
4589 static volatile GType gst_ ## type ## _type = 0; \
4591 if (g_once_init_enter (&gst_ ## type ## _type)) { \
4593 _info.value_table = & _gst_ ## type ## _value_table; \
4594 _type = g_type_register_fundamental ( \
4595 g_type_fundamental_next (), \
4596 name, &_info, &_finfo, 0); \
4597 g_once_init_leave(&gst_ ## type ## _type, _type); \
4600 return gst_ ## type ## _type; \
4603 static const GTypeValueTable _gst_fourcc_value_table = {
4604 gst_value_init_fourcc,
4606 gst_value_copy_fourcc,
4609 gst_value_collect_fourcc,
4611 gst_value_lcopy_fourcc
4614 FUNC_VALUE_GET_TYPE (fourcc, "GstFourcc");
4616 static const GTypeValueTable _gst_int_range_value_table = {
4617 gst_value_init_int_range,
4619 gst_value_copy_int_range,
4622 gst_value_collect_int_range,
4624 gst_value_lcopy_int_range
4627 FUNC_VALUE_GET_TYPE (int_range, "GstIntRange");
4629 static const GTypeValueTable _gst_int64_range_value_table = {
4630 gst_value_init_int64_range,
4632 gst_value_copy_int64_range,
4635 gst_value_collect_int64_range,
4637 gst_value_lcopy_int64_range
4640 FUNC_VALUE_GET_TYPE (int64_range, "GstInt64Range");
4642 static const GTypeValueTable _gst_double_range_value_table = {
4643 gst_value_init_double_range,
4645 gst_value_copy_double_range,
4648 gst_value_collect_double_range,
4650 gst_value_lcopy_double_range
4653 FUNC_VALUE_GET_TYPE (double_range, "GstDoubleRange");
4655 static const GTypeValueTable _gst_fraction_range_value_table = {
4656 gst_value_init_fraction_range,
4657 gst_value_free_fraction_range,
4658 gst_value_copy_fraction_range,
4661 gst_value_collect_fraction_range,
4663 gst_value_lcopy_fraction_range
4666 FUNC_VALUE_GET_TYPE (fraction_range, "GstFractionRange");
4668 static const GTypeValueTable _gst_value_list_value_table = {
4669 gst_value_init_list_or_array,
4670 gst_value_free_list_or_array,
4671 gst_value_copy_list_or_array,
4672 gst_value_list_or_array_peek_pointer,
4674 gst_value_collect_list_or_array,
4676 gst_value_lcopy_list_or_array
4679 FUNC_VALUE_GET_TYPE (value_list, "GstValueList");
4681 static const GTypeValueTable _gst_value_array_value_table = {
4682 gst_value_init_list_or_array,
4683 gst_value_free_list_or_array,
4684 gst_value_copy_list_or_array,
4685 gst_value_list_or_array_peek_pointer,
4687 gst_value_collect_list_or_array,
4689 gst_value_lcopy_list_or_array
4692 FUNC_VALUE_GET_TYPE (value_array, "GstValueArray");
4694 static const GTypeValueTable _gst_fraction_value_table = {
4695 gst_value_init_fraction,
4697 gst_value_copy_fraction,
4700 gst_value_collect_fraction,
4702 gst_value_lcopy_fraction
4705 FUNC_VALUE_GET_TYPE (fraction, "GstFraction");
4709 gst_date_get_type (void)
4711 static GType gst_date_type = 0;
4713 if (G_UNLIKELY (gst_date_type == 0)) {
4714 /* FIXME 0.11: we require GLib 2.8 already
4715 * Not using G_TYPE_DATE here on purpose, even if we could
4716 * if GLIB_CHECK_VERSION(2,8,0) was true: we don't want the
4717 * serialised strings to have different type strings depending
4718 * on what version is used, so FIXME when we require GLib-2.8 */
4719 gst_date_type = g_boxed_type_register_static ("GstDate",
4720 (GBoxedCopyFunc) gst_date_copy, (GBoxedFreeFunc) g_date_free);
4723 return gst_date_type;
4727 gst_date_time_get_type (void)
4729 static GType gst_date_time_type = 0;
4731 if (G_UNLIKELY (gst_date_time_type == 0)) {
4732 gst_date_time_type = g_boxed_type_register_static ("GstDateTime",
4733 (GBoxedCopyFunc) gst_date_time_ref,
4734 (GBoxedFreeFunc) gst_date_time_unref);
4737 return gst_date_time_type;
4742 _gst_value_initialize (void)
4744 gst_value_table = g_array_new (FALSE, FALSE, sizeof (GstValueTable));
4745 gst_value_hash = g_hash_table_new (NULL, NULL);
4746 gst_value_union_funcs = g_array_new (FALSE, FALSE,
4747 sizeof (GstValueUnionInfo));
4748 gst_value_intersect_funcs = g_array_new (FALSE, FALSE,
4749 sizeof (GstValueIntersectInfo));
4750 gst_value_subtract_funcs = g_array_new (FALSE, FALSE,
4751 sizeof (GstValueSubtractInfo));
4754 static GstValueTable gst_value = {
4756 gst_value_compare_fourcc,
4757 gst_value_serialize_fourcc,
4758 gst_value_deserialize_fourcc,
4761 gst_value.type = gst_fourcc_get_type ();
4762 gst_value_register (&gst_value);
4766 static GstValueTable gst_value = {
4768 gst_value_compare_int_range,
4769 gst_value_serialize_int_range,
4770 gst_value_deserialize_int_range,
4773 gst_value.type = gst_int_range_get_type ();
4774 gst_value_register (&gst_value);
4778 static GstValueTable gst_value = {
4780 gst_value_compare_int64_range,
4781 gst_value_serialize_int64_range,
4782 gst_value_deserialize_int64_range,
4785 gst_value.type = gst_int64_range_get_type ();
4786 gst_value_register (&gst_value);
4790 static GstValueTable gst_value = {
4792 gst_value_compare_double_range,
4793 gst_value_serialize_double_range,
4794 gst_value_deserialize_double_range,
4797 gst_value.type = gst_double_range_get_type ();
4798 gst_value_register (&gst_value);
4802 static GstValueTable gst_value = {
4804 gst_value_compare_fraction_range,
4805 gst_value_serialize_fraction_range,
4806 gst_value_deserialize_fraction_range,
4809 gst_value.type = gst_fraction_range_get_type ();
4810 gst_value_register (&gst_value);
4814 static GstValueTable gst_value = {
4816 gst_value_compare_list,
4817 gst_value_serialize_list,
4818 gst_value_deserialize_list,
4821 gst_value.type = gst_value_list_get_type ();
4822 gst_value_register (&gst_value);
4826 static GstValueTable gst_value = {
4828 gst_value_compare_array,
4829 gst_value_serialize_array,
4830 gst_value_deserialize_array,
4833 gst_value.type = gst_value_array_get_type ();
4834 gst_value_register (&gst_value);
4839 static const GTypeValueTable value_table = {
4840 gst_value_init_buffer,
4842 gst_value_copy_buffer,
4845 NULL, /*gst_value_collect_buffer, */
4847 NULL /*gst_value_lcopy_buffer */
4850 static GstValueTable gst_value = {
4852 gst_value_compare_buffer,
4853 gst_value_serialize_buffer,
4854 gst_value_deserialize_buffer,
4857 gst_value.type = GST_TYPE_BUFFER;
4858 gst_value_register (&gst_value);
4861 static GstValueTable gst_value = {
4863 gst_value_compare_fraction,
4864 gst_value_serialize_fraction,
4865 gst_value_deserialize_fraction,
4868 gst_value.type = gst_fraction_get_type ();
4869 gst_value_register (&gst_value);
4872 static GstValueTable gst_value = {
4875 gst_value_serialize_caps,
4876 gst_value_deserialize_caps,
4879 gst_value.type = GST_TYPE_CAPS;
4880 gst_value_register (&gst_value);
4883 static GstValueTable gst_value = {
4886 gst_value_serialize_structure,
4887 gst_value_deserialize_structure,
4890 gst_value.type = GST_TYPE_STRUCTURE;
4891 gst_value_register (&gst_value);
4894 static GstValueTable gst_value = {
4896 gst_value_compare_date,
4897 gst_value_serialize_date,
4898 gst_value_deserialize_date,
4901 gst_value.type = gst_date_get_type ();
4902 gst_value_register (&gst_value);
4905 static GstValueTable gst_value = {
4907 gst_value_compare_date_time,
4908 gst_value_serialize_date_time,
4909 gst_value_deserialize_date_time,
4912 gst_value.type = gst_date_time_get_type ();
4913 gst_value_register (&gst_value);
4916 REGISTER_SERIALIZATION (G_TYPE_DOUBLE, double);
4917 REGISTER_SERIALIZATION (G_TYPE_FLOAT, float);
4919 REGISTER_SERIALIZATION (G_TYPE_STRING, string);
4920 REGISTER_SERIALIZATION (G_TYPE_BOOLEAN, boolean);
4921 REGISTER_SERIALIZATION (G_TYPE_ENUM, enum);
4923 REGISTER_SERIALIZATION (G_TYPE_FLAGS, flags);
4925 REGISTER_SERIALIZATION (G_TYPE_INT, int);
4927 REGISTER_SERIALIZATION (G_TYPE_INT64, int64);
4928 REGISTER_SERIALIZATION (G_TYPE_LONG, long);
4930 REGISTER_SERIALIZATION (G_TYPE_UINT, uint);
4931 REGISTER_SERIALIZATION (G_TYPE_UINT64, uint64);
4932 REGISTER_SERIALIZATION (G_TYPE_ULONG, ulong);
4934 g_value_register_transform_func (GST_TYPE_FOURCC, G_TYPE_STRING,
4935 gst_value_transform_fourcc_string);
4936 g_value_register_transform_func (GST_TYPE_INT_RANGE, G_TYPE_STRING,
4937 gst_value_transform_int_range_string);
4938 g_value_register_transform_func (GST_TYPE_INT64_RANGE, G_TYPE_STRING,
4939 gst_value_transform_int64_range_string);
4940 g_value_register_transform_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_STRING,
4941 gst_value_transform_double_range_string);
4942 g_value_register_transform_func (GST_TYPE_FRACTION_RANGE, G_TYPE_STRING,
4943 gst_value_transform_fraction_range_string);
4944 g_value_register_transform_func (GST_TYPE_LIST, G_TYPE_STRING,
4945 gst_value_transform_list_string);
4946 g_value_register_transform_func (GST_TYPE_ARRAY, G_TYPE_STRING,
4947 gst_value_transform_array_string);
4948 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_STRING,
4949 gst_value_transform_fraction_string);
4950 g_value_register_transform_func (G_TYPE_STRING, GST_TYPE_FRACTION,
4951 gst_value_transform_string_fraction);
4952 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_DOUBLE,
4953 gst_value_transform_fraction_double);
4954 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_FLOAT,
4955 gst_value_transform_fraction_float);
4956 g_value_register_transform_func (G_TYPE_DOUBLE, GST_TYPE_FRACTION,
4957 gst_value_transform_double_fraction);
4958 g_value_register_transform_func (G_TYPE_FLOAT, GST_TYPE_FRACTION,
4959 gst_value_transform_float_fraction);
4960 g_value_register_transform_func (GST_TYPE_DATE, G_TYPE_STRING,
4961 gst_value_transform_date_string);
4962 g_value_register_transform_func (G_TYPE_STRING, GST_TYPE_DATE,
4963 gst_value_transform_string_date);
4964 g_value_register_transform_func (GST_TYPE_OBJECT, G_TYPE_STRING,
4965 gst_value_transform_object_string);
4967 gst_value_register_intersect_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
4968 gst_value_intersect_int_int_range);
4969 gst_value_register_intersect_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
4970 gst_value_intersect_int_range_int_range);
4971 gst_value_register_intersect_func (G_TYPE_INT64, GST_TYPE_INT64_RANGE,
4972 gst_value_intersect_int64_int64_range);
4973 gst_value_register_intersect_func (GST_TYPE_INT64_RANGE, GST_TYPE_INT64_RANGE,
4974 gst_value_intersect_int64_range_int64_range);
4975 gst_value_register_intersect_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
4976 gst_value_intersect_double_double_range);
4977 gst_value_register_intersect_func (GST_TYPE_DOUBLE_RANGE,
4978 GST_TYPE_DOUBLE_RANGE, gst_value_intersect_double_range_double_range);
4979 gst_value_register_intersect_func (GST_TYPE_ARRAY,
4980 GST_TYPE_ARRAY, gst_value_intersect_array);
4981 gst_value_register_intersect_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
4982 gst_value_intersect_fraction_fraction_range);
4983 gst_value_register_intersect_func (GST_TYPE_FRACTION_RANGE,
4984 GST_TYPE_FRACTION_RANGE,
4985 gst_value_intersect_fraction_range_fraction_range);
4987 gst_value_register_subtract_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
4988 gst_value_subtract_int_int_range);
4989 gst_value_register_subtract_func (GST_TYPE_INT_RANGE, G_TYPE_INT,
4990 gst_value_subtract_int_range_int);
4991 gst_value_register_subtract_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
4992 gst_value_subtract_int_range_int_range);
4993 gst_value_register_subtract_func (G_TYPE_INT64, GST_TYPE_INT64_RANGE,
4994 gst_value_subtract_int64_int64_range);
4995 gst_value_register_subtract_func (GST_TYPE_INT64_RANGE, G_TYPE_INT64,
4996 gst_value_subtract_int64_range_int64);
4997 gst_value_register_subtract_func (GST_TYPE_INT64_RANGE, GST_TYPE_INT64_RANGE,
4998 gst_value_subtract_int64_range_int64_range);
4999 gst_value_register_subtract_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
5000 gst_value_subtract_double_double_range);
5001 gst_value_register_subtract_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_DOUBLE,
5002 gst_value_subtract_double_range_double);
5003 gst_value_register_subtract_func (GST_TYPE_DOUBLE_RANGE,
5004 GST_TYPE_DOUBLE_RANGE, gst_value_subtract_double_range_double_range);
5006 gst_value_register_subtract_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5007 gst_value_subtract_fraction_fraction_range);
5008 gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE, GST_TYPE_FRACTION,
5009 gst_value_subtract_fraction_range_fraction);
5010 gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE,
5011 GST_TYPE_FRACTION_RANGE,
5012 gst_value_subtract_fraction_range_fraction_range);
5014 /* see bug #317246, #64994, #65041 */
5016 volatile GType date_type = G_TYPE_DATE;
5018 g_type_name (date_type);
5021 gst_value_register_union_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5022 gst_value_union_int_int_range);
5023 gst_value_register_union_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5024 gst_value_union_int_range_int_range);
5027 /* Implement these if needed */
5028 gst_value_register_union_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5029 gst_value_union_fraction_fraction_range);
5030 gst_value_register_union_func (GST_TYPE_FRACTION_RANGE,
5031 GST_TYPE_FRACTION_RANGE, gst_value_union_fraction_range_fraction_range);