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 /* we know the two values contain fractions without internal allocs */
1319 /* g_value_unset (&vals[0]); */
1320 /* g_value_unset (&vals[1]); */
1321 g_slice_free1 (2 * sizeof (GValue), vals);
1322 value->data[0].v_pointer = NULL;
1327 gst_value_copy_fraction_range (const GValue * src_value, GValue * dest_value)
1329 GValue *vals = (GValue *) dest_value->data[0].v_pointer;
1330 GValue *src_vals = (GValue *) src_value->data[0].v_pointer;
1333 gst_value_init_fraction_range (dest_value);
1334 vals = dest_value->data[0].v_pointer;
1336 if (src_vals != NULL) {
1337 g_value_copy (&src_vals[0], &vals[0]);
1338 g_value_copy (&src_vals[1], &vals[1]);
1343 gst_value_collect_fraction_range (GValue * value, guint n_collect_values,
1344 GTypeCValue * collect_values, guint collect_flags)
1346 GValue *vals = (GValue *) value->data[0].v_pointer;
1348 if (n_collect_values != 4)
1349 return g_strdup_printf ("not enough value locations for `%s' passed",
1350 G_VALUE_TYPE_NAME (value));
1351 if (collect_values[1].v_int == 0)
1352 return g_strdup_printf ("passed '0' as first denominator for `%s'",
1353 G_VALUE_TYPE_NAME (value));
1354 if (collect_values[3].v_int == 0)
1355 return g_strdup_printf ("passed '0' as second denominator for `%s'",
1356 G_VALUE_TYPE_NAME (value));
1357 if (gst_util_fraction_compare (collect_values[0].v_int,
1358 collect_values[1].v_int, collect_values[2].v_int,
1359 collect_values[3].v_int) >= 0)
1360 return g_strdup_printf ("range start is not smaller than end for `%s'",
1361 G_VALUE_TYPE_NAME (value));
1364 gst_value_init_fraction_range (value);
1365 vals = value->data[0].v_pointer;
1368 gst_value_set_fraction (&vals[0], collect_values[0].v_int,
1369 collect_values[1].v_int);
1370 gst_value_set_fraction (&vals[1], collect_values[2].v_int,
1371 collect_values[3].v_int);
1377 gst_value_lcopy_fraction_range (const GValue * value, guint n_collect_values,
1378 GTypeCValue * collect_values, guint collect_flags)
1381 gint *dest_values[4];
1382 GValue *vals = (GValue *) value->data[0].v_pointer;
1384 if (G_UNLIKELY (n_collect_values != 4))
1385 return g_strdup_printf ("not enough value locations for `%s' passed",
1386 G_VALUE_TYPE_NAME (value));
1388 for (i = 0; i < 4; i++) {
1389 if (G_UNLIKELY (collect_values[i].v_pointer == NULL)) {
1390 return g_strdup_printf ("value location for `%s' passed as NULL",
1391 G_VALUE_TYPE_NAME (value));
1393 dest_values[i] = collect_values[i].v_pointer;
1396 if (G_UNLIKELY (vals == NULL)) {
1397 return g_strdup_printf ("Uninitialised `%s' passed",
1398 G_VALUE_TYPE_NAME (value));
1401 dest_values[0][0] = gst_value_get_fraction_numerator (&vals[0]);
1402 dest_values[1][0] = gst_value_get_fraction_denominator (&vals[0]);
1403 dest_values[2][0] = gst_value_get_fraction_numerator (&vals[1]);
1404 dest_values[3][0] = gst_value_get_fraction_denominator (&vals[1]);
1409 * gst_value_set_fraction_range:
1410 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1411 * @start: the start of the range (a GST_TYPE_FRACTION GValue)
1412 * @end: the end of the range (a GST_TYPE_FRACTION GValue)
1414 * Sets @value to the range specified by @start and @end.
1417 gst_value_set_fraction_range (GValue * value, const GValue * start,
1422 g_return_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value));
1423 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (start));
1424 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (end));
1425 g_return_if_fail (gst_util_fraction_compare (start->data[0].v_int,
1426 start->data[1].v_int, end->data[0].v_int, end->data[1].v_int) < 0);
1428 vals = (GValue *) value->data[0].v_pointer;
1430 gst_value_init_fraction_range (value);
1431 vals = value->data[0].v_pointer;
1433 g_value_copy (start, &vals[0]);
1434 g_value_copy (end, &vals[1]);
1438 * gst_value_set_fraction_range_full:
1439 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1440 * @numerator_start: the numerator start of the range
1441 * @denominator_start: the denominator start of the range
1442 * @numerator_end: the numerator end of the range
1443 * @denominator_end: the denominator end of the range
1445 * Sets @value to the range specified by @numerator_start/@denominator_start
1446 * and @numerator_end/@denominator_end.
1449 gst_value_set_fraction_range_full (GValue * value,
1450 gint numerator_start, gint denominator_start,
1451 gint numerator_end, gint denominator_end)
1453 GValue start = { 0 };
1456 g_return_if_fail (value != NULL);
1457 g_return_if_fail (denominator_start != 0);
1458 g_return_if_fail (denominator_end != 0);
1459 g_return_if_fail (gst_util_fraction_compare (numerator_start,
1460 denominator_start, numerator_end, denominator_end) < 0);
1462 g_value_init (&start, GST_TYPE_FRACTION);
1463 g_value_init (&end, GST_TYPE_FRACTION);
1465 gst_value_set_fraction (&start, numerator_start, denominator_start);
1466 gst_value_set_fraction (&end, numerator_end, denominator_end);
1467 gst_value_set_fraction_range (value, &start, &end);
1469 /* we know the two values contain fractions without internal allocs */
1470 /* g_value_unset (&start); */
1471 /* g_value_unset (&end); */
1475 * gst_value_get_fraction_range_min:
1476 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1478 * Gets the minimum of the range specified by @value.
1480 * Returns: the minimum of the range
1483 gst_value_get_fraction_range_min (const GValue * value)
1487 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value), NULL);
1489 vals = (GValue *) value->data[0].v_pointer;
1498 * gst_value_get_fraction_range_max:
1499 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1501 * Gets the maximum of the range specified by @value.
1503 * Returns: the maximum of the range
1506 gst_value_get_fraction_range_max (const GValue * value)
1510 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value), NULL);
1512 vals = (GValue *) value->data[0].v_pointer;
1521 gst_value_serialize_fraction_range (const GValue * value)
1523 GValue *vals = (GValue *) value->data[0].v_pointer;
1527 retval = g_strdup ("[ 0/1, 0/1 ]");
1531 start = gst_value_serialize_fraction (&vals[0]);
1532 end = gst_value_serialize_fraction (&vals[1]);
1534 retval = g_strdup_printf ("[ %s, %s ]", start, end);
1543 gst_value_transform_fraction_range_string (const GValue * src_value,
1544 GValue * dest_value)
1546 dest_value->data[0].v_pointer =
1547 gst_value_serialize_fraction_range (src_value);
1551 gst_value_compare_fraction_range (const GValue * value1, const GValue * value2)
1553 GValue *vals1, *vals2;
1554 GstValueCompareFunc compare;
1556 if (value2->data[0].v_pointer == value1->data[0].v_pointer)
1557 return GST_VALUE_EQUAL; /* Only possible if both are NULL */
1559 if (value2->data[0].v_pointer == NULL || value1->data[0].v_pointer == NULL)
1560 return GST_VALUE_UNORDERED;
1562 vals1 = (GValue *) value1->data[0].v_pointer;
1563 vals2 = (GValue *) value2->data[0].v_pointer;
1564 if ((compare = gst_value_get_compare_func (&vals1[0]))) {
1565 if (gst_value_compare_with_func (&vals1[0], &vals2[0], compare) ==
1567 gst_value_compare_with_func (&vals1[1], &vals2[1], compare) ==
1569 return GST_VALUE_EQUAL;
1571 return GST_VALUE_UNORDERED;
1575 gst_value_deserialize_fraction_range (GValue * dest, const gchar * s)
1577 g_warning ("unimplemented");
1586 * gst_value_set_caps:
1587 * @value: a GValue initialized to GST_TYPE_CAPS
1588 * @caps: (transfer none): the caps to set the value to
1590 * Sets the contents of @value to @caps. A reference to the
1591 * provided @caps will be taken by the @value.
1594 gst_value_set_caps (GValue * value, const GstCaps * caps)
1596 g_return_if_fail (G_IS_VALUE (value));
1597 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_CAPS);
1598 g_return_if_fail (caps == NULL || GST_IS_CAPS (caps));
1600 g_value_set_boxed (value, caps);
1604 * gst_value_get_caps:
1605 * @value: a GValue initialized to GST_TYPE_CAPS
1607 * Gets the contents of @value. The reference count of the returned
1608 * #GstCaps will not be modified, therefore the caller must take one
1609 * before getting rid of the @value.
1611 * Returns: (transfer none): the contents of @value
1614 gst_value_get_caps (const GValue * value)
1616 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1617 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_CAPS, NULL);
1619 return (GstCaps *) g_value_get_boxed (value);
1623 gst_value_serialize_caps (const GValue * value)
1625 GstCaps *caps = g_value_get_boxed (value);
1627 return gst_caps_to_string (caps);
1631 gst_value_deserialize_caps (GValue * dest, const gchar * s)
1635 caps = gst_caps_from_string (s);
1638 g_value_take_boxed (dest, caps);
1649 * gst_value_set_structure:
1650 * @value: a GValue initialized to GST_TYPE_STRUCTURE
1651 * @structure: the structure to set the value to
1653 * Sets the contents of @value to @structure. The actual
1658 gst_value_set_structure (GValue * value, const GstStructure * structure)
1660 g_return_if_fail (G_IS_VALUE (value));
1661 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_STRUCTURE);
1662 g_return_if_fail (structure == NULL || GST_IS_STRUCTURE (structure));
1664 g_value_set_boxed (value, structure);
1668 * gst_value_get_structure:
1669 * @value: a GValue initialized to GST_TYPE_STRUCTURE
1671 * Gets the contents of @value.
1673 * Returns: (transfer none): the contents of @value
1677 const GstStructure *
1678 gst_value_get_structure (const GValue * value)
1680 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1681 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_STRUCTURE, NULL);
1683 return (GstStructure *) g_value_get_boxed (value);
1687 gst_value_serialize_structure (const GValue * value)
1689 GstStructure *structure = g_value_get_boxed (value);
1691 return gst_string_take_and_wrap (gst_structure_to_string (structure));
1695 gst_value_deserialize_structure (GValue * dest, const gchar * s)
1697 GstStructure *structure;
1700 structure = gst_structure_from_string (s, NULL);
1702 gchar *str = gst_string_unwrap (s);
1704 if (G_UNLIKELY (!str))
1707 structure = gst_structure_from_string (str, NULL);
1711 if (G_LIKELY (structure)) {
1712 g_value_take_boxed (dest, structure);
1723 gst_value_compare_buffer (const GValue * value1, const GValue * value2)
1725 GstBuffer *buf1 = GST_BUFFER (gst_value_get_mini_object (value1));
1726 GstBuffer *buf2 = GST_BUFFER (gst_value_get_mini_object (value2));
1728 if (GST_BUFFER_SIZE (buf1) != GST_BUFFER_SIZE (buf2))
1729 return GST_VALUE_UNORDERED;
1730 if (GST_BUFFER_SIZE (buf1) == 0)
1731 return GST_VALUE_EQUAL;
1732 g_assert (GST_BUFFER_DATA (buf1));
1733 g_assert (GST_BUFFER_DATA (buf2));
1734 if (memcmp (GST_BUFFER_DATA (buf1), GST_BUFFER_DATA (buf2),
1735 GST_BUFFER_SIZE (buf1)) == 0)
1736 return GST_VALUE_EQUAL;
1738 return GST_VALUE_UNORDERED;
1742 gst_value_serialize_buffer (const GValue * value)
1750 buffer = gst_value_get_buffer (value);
1754 data = GST_BUFFER_DATA (buffer);
1755 size = GST_BUFFER_SIZE (buffer);
1757 string = g_malloc (size * 2 + 1);
1758 for (i = 0; i < size; i++) {
1759 sprintf (string + i * 2, "%02x", data[i]);
1761 string[size * 2] = 0;
1767 gst_value_deserialize_buffer (GValue * dest, const gchar * s)
1779 buffer = gst_buffer_new_and_alloc (len / 2);
1780 data = GST_BUFFER_DATA (buffer);
1781 for (i = 0; i < len / 2; i++) {
1782 if (!isxdigit ((int) s[i * 2]) || !isxdigit ((int) s[i * 2 + 1]))
1785 ts[0] = s[i * 2 + 0];
1786 ts[1] = s[i * 2 + 1];
1789 data[i] = (guint8) strtoul (ts, NULL, 16);
1792 gst_value_take_buffer (dest, buffer);
1803 gst_buffer_unref (buffer);
1814 gst_value_compare_boolean (const GValue * value1, const GValue * value2)
1816 if ((value1->data[0].v_int != 0) == (value2->data[0].v_int != 0))
1817 return GST_VALUE_EQUAL;
1818 return GST_VALUE_UNORDERED;
1822 gst_value_serialize_boolean (const GValue * value)
1824 if (value->data[0].v_int) {
1825 return g_strdup ("true");
1827 return g_strdup ("false");
1831 gst_value_deserialize_boolean (GValue * dest, const gchar * s)
1833 gboolean ret = FALSE;
1835 if (g_ascii_strcasecmp (s, "true") == 0 ||
1836 g_ascii_strcasecmp (s, "yes") == 0 ||
1837 g_ascii_strcasecmp (s, "t") == 0 || strcmp (s, "1") == 0) {
1838 g_value_set_boolean (dest, TRUE);
1840 } else if (g_ascii_strcasecmp (s, "false") == 0 ||
1841 g_ascii_strcasecmp (s, "no") == 0 ||
1842 g_ascii_strcasecmp (s, "f") == 0 || strcmp (s, "0") == 0) {
1843 g_value_set_boolean (dest, FALSE);
1850 #define CREATE_SERIALIZATION_START(_type,_macro) \
1852 gst_value_compare_ ## _type \
1853 (const GValue * value1, const GValue * value2) \
1855 g ## _type val1 = g_value_get_ ## _type (value1); \
1856 g ## _type val2 = g_value_get_ ## _type (value2); \
1858 return GST_VALUE_GREATER_THAN; \
1860 return GST_VALUE_LESS_THAN; \
1861 return GST_VALUE_EQUAL; \
1865 gst_value_serialize_ ## _type (const GValue * value) \
1867 GValue val = { 0, }; \
1868 g_value_init (&val, G_TYPE_STRING); \
1869 if (!g_value_transform (value, &val)) \
1870 g_assert_not_reached (); \
1871 /* NO_COPY_MADNESS!!! */ \
1872 return (char *) g_value_get_string (&val); \
1875 /* deserialize the given s into to as a gint64.
1876 * check if the result is actually storeable in the given size number of
1880 gst_value_deserialize_int_helper (gint64 * to, const gchar * s,
1881 gint64 min, gint64 max, gint size)
1883 gboolean ret = FALSE;
1888 *to = g_ascii_strtoull (s, &end, 0);
1889 /* a range error is a definitive no-no */
1890 if (errno == ERANGE) {
1897 if (g_ascii_strcasecmp (s, "little_endian") == 0) {
1898 *to = G_LITTLE_ENDIAN;
1900 } else if (g_ascii_strcasecmp (s, "big_endian") == 0) {
1903 } else if (g_ascii_strcasecmp (s, "byte_order") == 0) {
1906 } else if (g_ascii_strcasecmp (s, "min") == 0) {
1909 } else if (g_ascii_strcasecmp (s, "max") == 0) {
1915 /* by definition, a gint64 fits into a gint64; so ignore those */
1916 if (size != sizeof (mask)) {
1918 /* for positive numbers, we create a mask of 1's outside of the range
1919 * and 0's inside the range. An and will thus keep only 1 bits
1920 * outside of the range */
1921 mask <<= (size * 8);
1922 if ((mask & *to) != 0) {
1926 /* for negative numbers, we do a 2's complement version */
1927 mask <<= ((size * 8) - 1);
1928 if ((mask & *to) != mask) {
1937 #define CREATE_SERIALIZATION(_type,_macro) \
1938 CREATE_SERIALIZATION_START(_type,_macro) \
1941 gst_value_deserialize_ ## _type (GValue * dest, const gchar *s) \
1945 if (gst_value_deserialize_int_helper (&x, s, G_MIN ## _macro, \
1946 G_MAX ## _macro, sizeof (g ## _type))) { \
1947 g_value_set_ ## _type (dest, /*(g ## _type)*/ x); \
1954 #define CREATE_USERIALIZATION(_type,_macro) \
1955 CREATE_SERIALIZATION_START(_type,_macro) \
1958 gst_value_deserialize_ ## _type (GValue * dest, const gchar *s) \
1962 gboolean ret = FALSE; \
1965 x = g_ascii_strtoull (s, &end, 0); \
1966 /* a range error is a definitive no-no */ \
1967 if (errno == ERANGE) { \
1970 /* the cast ensures the range check later on makes sense */ \
1971 x = (g ## _type) x; \
1975 if (g_ascii_strcasecmp (s, "little_endian") == 0) { \
1976 x = G_LITTLE_ENDIAN; \
1978 } else if (g_ascii_strcasecmp (s, "big_endian") == 0) { \
1981 } else if (g_ascii_strcasecmp (s, "byte_order") == 0) { \
1984 } else if (g_ascii_strcasecmp (s, "min") == 0) { \
1987 } else if (g_ascii_strcasecmp (s, "max") == 0) { \
1988 x = G_MAX ## _macro; \
1993 if (x > G_MAX ## _macro) { \
1996 g_value_set_ ## _type (dest, x); \
2002 #define REGISTER_SERIALIZATION(_gtype, _type) \
2004 static const GstValueTable gst_value = { \
2006 gst_value_compare_ ## _type, \
2007 gst_value_serialize_ ## _type, \
2008 gst_value_deserialize_ ## _type, \
2011 gst_value_register (&gst_value); \
2014 CREATE_SERIALIZATION (int, INT);
2015 CREATE_SERIALIZATION (int64, INT64);
2016 CREATE_SERIALIZATION (long, LONG);
2018 CREATE_USERIALIZATION (uint, UINT);
2019 CREATE_USERIALIZATION (uint64, UINT64);
2020 CREATE_USERIALIZATION (ulong, ULONG);
2022 /* FIXME 0.11: remove this again, plugins shouldn't have uchar properties */
2024 #define G_MAXUCHAR 255
2026 CREATE_USERIALIZATION (uchar, UCHAR);
2032 gst_value_compare_double (const GValue * value1, const GValue * value2)
2034 if (value1->data[0].v_double > value2->data[0].v_double)
2035 return GST_VALUE_GREATER_THAN;
2036 if (value1->data[0].v_double < value2->data[0].v_double)
2037 return GST_VALUE_LESS_THAN;
2038 if (value1->data[0].v_double == value2->data[0].v_double)
2039 return GST_VALUE_EQUAL;
2040 return GST_VALUE_UNORDERED;
2044 gst_value_serialize_double (const GValue * value)
2046 gchar d[G_ASCII_DTOSTR_BUF_SIZE];
2048 g_ascii_dtostr (d, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_double);
2049 return g_strdup (d);
2053 gst_value_deserialize_double (GValue * dest, const gchar * s)
2056 gboolean ret = FALSE;
2059 x = g_ascii_strtod (s, &end);
2063 if (g_ascii_strcasecmp (s, "min") == 0) {
2066 } else if (g_ascii_strcasecmp (s, "max") == 0) {
2072 g_value_set_double (dest, x);
2082 gst_value_compare_float (const GValue * value1, const GValue * value2)
2084 if (value1->data[0].v_float > value2->data[0].v_float)
2085 return GST_VALUE_GREATER_THAN;
2086 if (value1->data[0].v_float < value2->data[0].v_float)
2087 return GST_VALUE_LESS_THAN;
2088 if (value1->data[0].v_float == value2->data[0].v_float)
2089 return GST_VALUE_EQUAL;
2090 return GST_VALUE_UNORDERED;
2094 gst_value_serialize_float (const GValue * value)
2096 gchar d[G_ASCII_DTOSTR_BUF_SIZE];
2098 g_ascii_dtostr (d, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_float);
2099 return g_strdup (d);
2103 gst_value_deserialize_float (GValue * dest, const gchar * s)
2106 gboolean ret = FALSE;
2109 x = g_ascii_strtod (s, &end);
2113 if (g_ascii_strcasecmp (s, "min") == 0) {
2116 } else if (g_ascii_strcasecmp (s, "max") == 0) {
2121 if (x > G_MAXFLOAT || x < -G_MAXFLOAT)
2124 g_value_set_float (dest, (float) x);
2134 gst_value_compare_string (const GValue * value1, const GValue * value2)
2136 if (G_UNLIKELY (!value1->data[0].v_pointer || !value2->data[0].v_pointer)) {
2137 /* if only one is NULL, no match - otherwise both NULL == EQUAL */
2138 if (value1->data[0].v_pointer != value2->data[0].v_pointer)
2139 return GST_VALUE_UNORDERED;
2141 gint x = strcmp (value1->data[0].v_pointer, value2->data[0].v_pointer);
2144 return GST_VALUE_LESS_THAN;
2146 return GST_VALUE_GREATER_THAN;
2149 return GST_VALUE_EQUAL;
2153 gst_string_measure_wrapping (const gchar * s)
2156 gboolean wrap = FALSE;
2158 if (G_UNLIKELY (s == NULL))
2161 /* Special case: the actual string NULL needs wrapping */
2162 if (G_UNLIKELY (strcmp (s, "NULL") == 0))
2167 if (GST_ASCII_IS_STRING (*s)) {
2169 } else if (*s < 0x20 || *s >= 0x7f) {
2179 /* Wrap the string if we found something that needs
2180 * wrapping, or the empty string (len == 0) */
2181 return (wrap || len == 0) ? len : -1;
2185 gst_string_wrap_inner (const gchar * s, gint len)
2189 e = d = g_malloc (len + 3);
2193 if (GST_ASCII_IS_STRING (*s)) {
2195 } else if (*s < 0x20 || *s >= 0x7f) {
2197 *e++ = '0' + ((*(guchar *) s) >> 6);
2198 *e++ = '0' + (((*s) >> 3) & 0x7);
2199 *e++ = '0' + ((*s++) & 0x7);
2208 g_assert (e - d <= len + 3);
2212 /* Do string wrapping/escaping */
2214 gst_string_wrap (const gchar * s)
2216 gint len = gst_string_measure_wrapping (s);
2218 if (G_LIKELY (len < 0))
2219 return g_strdup (s);
2221 return gst_string_wrap_inner (s, len);
2224 /* Same as above, but take ownership of the string */
2226 gst_string_take_and_wrap (gchar * s)
2229 gint len = gst_string_measure_wrapping (s);
2231 if (G_LIKELY (len < 0))
2234 out = gst_string_wrap_inner (s, len);
2241 * This function takes a string delimited with double quotes (")
2242 * and unescapes any \xxx octal numbers.
2244 * If sequences of \y are found where y is not in the range of
2245 * 0->3, y is copied unescaped.
2247 * If \xyy is found where x is an octal number but y is not, an
2248 * error is encountered and NULL is returned.
2250 * the input string must be \0 terminated.
2253 gst_string_unwrap (const gchar * s)
2256 gchar *read, *write;
2258 /* NULL string returns NULL */
2262 /* strings not starting with " are invalid */
2266 /* make copy of original string to hold the result. This
2267 * string will always be smaller than the original */
2272 /* need to move to the next position as we parsed the " */
2276 if (GST_ASCII_IS_STRING (*read)) {
2277 /* normal chars are just copied */
2279 } else if (*read == '"') {
2280 /* quote marks end of string */
2282 } else if (*read == '\\') {
2283 /* got an escape char, move to next position to read a tripplet
2284 * of octal numbers */
2286 /* is the next char a possible first octal number? */
2287 if (*read >= '0' && *read <= '3') {
2288 /* parse other 2 numbers, if one of them is not in the range of
2289 * an octal number, we error. We also catch the case where a zero
2290 * byte is found here. */
2291 if (read[1] < '0' || read[1] > '7' || read[2] < '0' || read[2] > '7')
2294 /* now convert the octal number to a byte again. */
2295 *write++ = ((read[0] - '0') << 6) +
2296 ((read[1] - '0') << 3) + (read[2] - '0');
2300 /* if we run into a \0 here, we definitely won't get a quote later */
2304 /* else copy \X sequence */
2308 /* weird character, error */
2312 /* if the string is not ending in " and zero terminated, we error */
2313 if (*read != '"' || read[1] != '\0')
2316 /* null terminate result string and return */
2326 gst_value_serialize_string (const GValue * value)
2328 return gst_string_wrap (value->data[0].v_pointer);
2332 gst_value_deserialize_string (GValue * dest, const gchar * s)
2334 if (G_UNLIKELY (strcmp (s, "NULL") == 0)) {
2335 g_value_set_string (dest, NULL);
2337 } else if (G_LIKELY (*s != '"')) {
2338 if (!g_utf8_validate (s, -1, NULL))
2340 g_value_set_string (dest, s);
2343 gchar *str = gst_string_unwrap (s);
2344 if (G_UNLIKELY (!str))
2346 g_value_take_string (dest, str);
2357 gst_value_compare_enum (const GValue * value1, const GValue * value2)
2359 GEnumValue *en1, *en2;
2360 GEnumClass *klass1 = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value1));
2361 GEnumClass *klass2 = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value2));
2363 g_return_val_if_fail (klass1, GST_VALUE_UNORDERED);
2364 g_return_val_if_fail (klass2, GST_VALUE_UNORDERED);
2365 en1 = g_enum_get_value (klass1, g_value_get_enum (value1));
2366 en2 = g_enum_get_value (klass2, g_value_get_enum (value2));
2367 g_type_class_unref (klass1);
2368 g_type_class_unref (klass2);
2369 g_return_val_if_fail (en1, GST_VALUE_UNORDERED);
2370 g_return_val_if_fail (en2, GST_VALUE_UNORDERED);
2371 if (en1->value < en2->value)
2372 return GST_VALUE_LESS_THAN;
2373 if (en1->value > en2->value)
2374 return GST_VALUE_GREATER_THAN;
2376 return GST_VALUE_EQUAL;
2380 gst_value_serialize_enum (const GValue * value)
2383 GEnumClass *klass = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value));
2385 g_return_val_if_fail (klass, NULL);
2386 en = g_enum_get_value (klass, g_value_get_enum (value));
2387 g_type_class_unref (klass);
2389 /* might be one of the custom formats registered later */
2390 if (G_UNLIKELY (en == NULL && G_VALUE_TYPE (value) == GST_TYPE_FORMAT)) {
2391 const GstFormatDefinition *format_def;
2393 format_def = gst_format_get_details ((GstFormat) g_value_get_enum (value));
2394 g_return_val_if_fail (format_def != NULL, NULL);
2395 return g_strdup (format_def->description);
2398 g_return_val_if_fail (en, NULL);
2399 return g_strdup (en->value_name);
2403 gst_value_deserialize_enum_iter_cmp (const GstFormatDefinition * format_def,
2406 if (g_ascii_strcasecmp (s, format_def->nick) == 0)
2409 return g_ascii_strcasecmp (s, format_def->description);
2413 gst_value_deserialize_enum (GValue * dest, const gchar * s)
2416 gchar *endptr = NULL;
2417 GEnumClass *klass = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (dest));
2419 g_return_val_if_fail (klass, FALSE);
2420 if (!(en = g_enum_get_value_by_name (klass, s))) {
2421 if (!(en = g_enum_get_value_by_nick (klass, s))) {
2422 gint i = strtol (s, &endptr, 0);
2424 if (endptr && *endptr == '\0') {
2425 en = g_enum_get_value (klass, i);
2429 g_type_class_unref (klass);
2431 /* might be one of the custom formats registered later */
2432 if (G_UNLIKELY (en == NULL && G_VALUE_TYPE (dest) == GST_TYPE_FORMAT)) {
2433 const GstFormatDefinition *format_def;
2436 iter = gst_format_iterate_definitions ();
2438 format_def = gst_iterator_find_custom (iter,
2439 (GCompareFunc) gst_value_deserialize_enum_iter_cmp, (gpointer) s);
2441 g_return_val_if_fail (format_def != NULL, FALSE);
2442 g_value_set_enum (dest, (gint) format_def->value);
2443 gst_iterator_free (iter);
2447 g_return_val_if_fail (en, FALSE);
2448 g_value_set_enum (dest, en->value);
2456 /* we just compare the value here */
2458 gst_value_compare_flags (const GValue * value1, const GValue * value2)
2461 GFlagsClass *klass1 =
2462 (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value1));
2463 GFlagsClass *klass2 =
2464 (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value2));
2466 g_return_val_if_fail (klass1, GST_VALUE_UNORDERED);
2467 g_return_val_if_fail (klass2, GST_VALUE_UNORDERED);
2468 fl1 = g_value_get_flags (value1);
2469 fl2 = g_value_get_flags (value2);
2470 g_type_class_unref (klass1);
2471 g_type_class_unref (klass2);
2473 return GST_VALUE_LESS_THAN;
2475 return GST_VALUE_GREATER_THAN;
2477 return GST_VALUE_EQUAL;
2480 /* the different flags are serialized separated with a + */
2482 gst_value_serialize_flags (const GValue * value)
2486 GFlagsClass *klass = (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value));
2487 gchar *result, *tmp;
2488 gboolean first = TRUE;
2490 g_return_val_if_fail (klass, NULL);
2492 flags = g_value_get_flags (value);
2494 /* if no flags are set, try to serialize to the _NONE string */
2496 fl = g_flags_get_first_value (klass, flags);
2497 return g_strdup (fl->value_name);
2500 /* some flags are set, so serialize one by one */
2501 result = g_strdup ("");
2503 fl = g_flags_get_first_value (klass, flags);
2505 tmp = g_strconcat (result, (first ? "" : "+"), fl->value_name, NULL);
2511 flags &= ~fl->value;
2514 g_type_class_unref (klass);
2520 gst_value_deserialize_flags (GValue * dest, const gchar * s)
2523 gchar *endptr = NULL;
2524 GFlagsClass *klass = (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (dest));
2529 g_return_val_if_fail (klass, FALSE);
2531 /* split into parts delimited with + */
2532 split = g_strsplit (s, "+", 0);
2536 /* loop over each part */
2538 if (!(fl = g_flags_get_value_by_name (klass, split[i]))) {
2539 if (!(fl = g_flags_get_value_by_nick (klass, split[i]))) {
2540 gint val = strtol (split[i], &endptr, 0);
2542 /* just or numeric value */
2543 if (endptr && *endptr == '\0') {
2554 g_type_class_unref (klass);
2555 g_value_set_flags (dest, flags);
2565 gst_value_union_int_int_range (GValue * dest, const GValue * src1,
2566 const GValue * src2)
2568 if (src2->data[0].v_int <= src1->data[0].v_int &&
2569 src2->data[1].v_int >= src1->data[0].v_int) {
2570 gst_value_init_and_copy (dest, src2);
2577 gst_value_union_int_range_int_range (GValue * dest, const GValue * src1,
2578 const GValue * src2)
2583 min = MAX (src1->data[0].v_int, src2->data[0].v_int);
2584 max = MIN (src1->data[1].v_int, src2->data[1].v_int);
2587 g_value_init (dest, GST_TYPE_INT_RANGE);
2588 gst_value_set_int_range (dest,
2589 MIN (src1->data[0].v_int, src2->data[0].v_int),
2590 MAX (src1->data[1].v_int, src2->data[1].v_int));
2602 gst_value_intersect_int_int_range (GValue * dest, const GValue * src1,
2603 const GValue * src2)
2605 if (src2->data[0].v_int <= src1->data[0].v_int &&
2606 src2->data[1].v_int >= src1->data[0].v_int) {
2608 gst_value_init_and_copy (dest, src1);
2616 gst_value_intersect_int_range_int_range (GValue * dest, const GValue * src1,
2617 const GValue * src2)
2622 min = MAX (src1->data[0].v_int, src2->data[0].v_int);
2623 max = MIN (src1->data[1].v_int, src2->data[1].v_int);
2627 g_value_init (dest, GST_TYPE_INT_RANGE);
2628 gst_value_set_int_range (dest, min, max);
2634 g_value_init (dest, G_TYPE_INT);
2635 g_value_set_int (dest, min);
2644 gst_value_intersect_int64_int64_range (GValue * dest, const GValue * src1,
2645 const GValue * src2)
2647 if (src2->data[0].v_int64 <= src1->data[0].v_int64 &&
2648 src2->data[1].v_int64 >= src1->data[0].v_int64) {
2650 gst_value_init_and_copy (dest, src1);
2658 gst_value_intersect_int64_range_int64_range (GValue * dest, const GValue * src1,
2659 const GValue * src2)
2664 min = MAX (src1->data[0].v_int64, src2->data[0].v_int64);
2665 max = MIN (src1->data[1].v_int64, src2->data[1].v_int64);
2669 g_value_init (dest, GST_TYPE_INT64_RANGE);
2670 gst_value_set_int64_range (dest, min, max);
2676 g_value_init (dest, G_TYPE_INT64);
2677 g_value_set_int64 (dest, min);
2686 gst_value_intersect_double_double_range (GValue * dest, const GValue * src1,
2687 const GValue * src2)
2689 if (src2->data[0].v_double <= src1->data[0].v_double &&
2690 src2->data[1].v_double >= src1->data[0].v_double) {
2692 gst_value_init_and_copy (dest, src1);
2700 gst_value_intersect_double_range_double_range (GValue * dest,
2701 const GValue * src1, const GValue * src2)
2706 min = MAX (src1->data[0].v_double, src2->data[0].v_double);
2707 max = MIN (src1->data[1].v_double, src2->data[1].v_double);
2711 g_value_init (dest, GST_TYPE_DOUBLE_RANGE);
2712 gst_value_set_double_range (dest, min, max);
2718 g_value_init (dest, G_TYPE_DOUBLE);
2719 g_value_set_int (dest, (int) min);
2728 gst_value_intersect_list (GValue * dest, const GValue * value1,
2729 const GValue * value2)
2732 GValue intersection = { 0, };
2733 gboolean ret = FALSE;
2735 size = VALUE_LIST_SIZE (value1);
2736 for (i = 0; i < size; i++) {
2737 const GValue *cur = VALUE_LIST_GET_VALUE (value1, i);
2739 /* quicker version when we don't need the resulting set */
2741 if (gst_value_intersect (NULL, cur, value2)) {
2748 if (gst_value_intersect (&intersection, cur, value2)) {
2751 gst_value_init_and_copy (dest, &intersection);
2753 } else if (GST_VALUE_HOLDS_LIST (dest)) {
2754 gst_value_list_append_value (dest, &intersection);
2756 GValue temp = { 0, };
2758 gst_value_init_and_copy (&temp, dest);
2759 g_value_unset (dest);
2760 gst_value_list_concat (dest, &temp, &intersection);
2761 g_value_unset (&temp);
2763 g_value_unset (&intersection);
2771 gst_value_intersect_array (GValue * dest, const GValue * src1,
2772 const GValue * src2)
2778 /* only works on similar-sized arrays */
2779 size = gst_value_array_get_size (src1);
2780 if (size != gst_value_array_get_size (src2))
2783 /* quicker value when we don't need the resulting set */
2785 for (n = 0; n < size; n++) {
2786 if (!gst_value_intersect (NULL, gst_value_array_get_value (src1, n),
2787 gst_value_array_get_value (src2, n))) {
2794 g_value_init (dest, GST_TYPE_ARRAY);
2796 for (n = 0; n < size; n++) {
2797 if (!gst_value_intersect (&val, gst_value_array_get_value (src1, n),
2798 gst_value_array_get_value (src2, n))) {
2799 g_value_unset (dest);
2802 gst_value_array_append_value (dest, &val);
2803 g_value_unset (&val);
2810 gst_value_intersect_fraction_fraction_range (GValue * dest, const GValue * src1,
2811 const GValue * src2)
2815 GstValueCompareFunc compare;
2817 vals = src2->data[0].v_pointer;
2822 if ((compare = gst_value_get_compare_func (src1))) {
2823 res1 = gst_value_compare_with_func (&vals[0], src1, compare);
2824 res2 = gst_value_compare_with_func (&vals[1], src1, compare);
2826 if ((res1 == GST_VALUE_EQUAL || res1 == GST_VALUE_LESS_THAN) &&
2827 (res2 == GST_VALUE_EQUAL || res2 == GST_VALUE_GREATER_THAN)) {
2829 gst_value_init_and_copy (dest, src1);
2838 gst_value_intersect_fraction_range_fraction_range (GValue * dest,
2839 const GValue * src1, const GValue * src2)
2844 GValue *vals1, *vals2;
2845 GstValueCompareFunc compare;
2847 vals1 = src1->data[0].v_pointer;
2848 vals2 = src2->data[0].v_pointer;
2849 g_return_val_if_fail (vals1 != NULL && vals2 != NULL, FALSE);
2851 if ((compare = gst_value_get_compare_func (&vals1[0]))) {
2852 /* min = MAX (src1.start, src2.start) */
2853 res = gst_value_compare_with_func (&vals1[0], &vals2[0], compare);
2854 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2855 if (res == GST_VALUE_LESS_THAN)
2856 min = &vals2[0]; /* Take the max of the 2 */
2860 /* max = MIN (src1.end, src2.end) */
2861 res = gst_value_compare_with_func (&vals1[1], &vals2[1], compare);
2862 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2863 if (res == GST_VALUE_GREATER_THAN)
2864 max = &vals2[1]; /* Take the min of the 2 */
2868 res = gst_value_compare_with_func (min, max, compare);
2869 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2870 if (res == GST_VALUE_LESS_THAN) {
2872 g_value_init (dest, GST_TYPE_FRACTION_RANGE);
2873 vals1 = dest->data[0].v_pointer;
2874 g_value_copy (min, &vals1[0]);
2875 g_value_copy (max, &vals1[1]);
2879 if (res == GST_VALUE_EQUAL) {
2881 gst_value_init_and_copy (dest, min);
2894 gst_value_subtract_int_int_range (GValue * dest, const GValue * minuend,
2895 const GValue * subtrahend)
2897 gint min = gst_value_get_int_range_min (subtrahend);
2898 gint max = gst_value_get_int_range_max (subtrahend);
2899 gint val = g_value_get_int (minuend);
2901 /* subtracting a range from an int only works if the int is not in the
2903 if (val < min || val > max) {
2904 /* and the result is the int */
2906 gst_value_init_and_copy (dest, minuend);
2912 /* creates a new int range based on input values.
2915 gst_value_create_new_range (GValue * dest, gint min1, gint max1, gint min2,
2920 GValue *pv1, *pv2; /* yeah, hungarian! */
2922 if (min1 <= max1 && min2 <= max2) {
2925 } else if (min1 <= max1) {
2928 } else if (min2 <= max2) {
2939 g_value_init (pv1, GST_TYPE_INT_RANGE);
2940 gst_value_set_int_range (pv1, min1, max1);
2941 } else if (min1 == max1) {
2942 g_value_init (pv1, G_TYPE_INT);
2943 g_value_set_int (pv1, min1);
2946 g_value_init (pv2, GST_TYPE_INT_RANGE);
2947 gst_value_set_int_range (pv2, min2, max2);
2948 } else if (min2 == max2) {
2949 g_value_init (pv2, G_TYPE_INT);
2950 g_value_set_int (pv2, min2);
2953 if (min1 <= max1 && min2 <= max2) {
2954 gst_value_list_concat (dest, pv1, pv2);
2955 g_value_unset (pv1);
2956 g_value_unset (pv2);
2962 gst_value_subtract_int_range_int (GValue * dest, const GValue * minuend,
2963 const GValue * subtrahend)
2965 gint min = gst_value_get_int_range_min (minuend);
2966 gint max = gst_value_get_int_range_max (minuend);
2967 gint val = g_value_get_int (subtrahend);
2969 g_return_val_if_fail (min < max, FALSE);
2971 /* value is outside of the range, return range unchanged */
2972 if (val < min || val > max) {
2974 gst_value_init_and_copy (dest, minuend);
2977 /* max must be MAXINT too as val <= max */
2978 if (val == G_MAXINT) {
2982 /* min must be MININT too as val >= max */
2983 if (val == G_MININT) {
2988 gst_value_create_new_range (dest, min, val - 1, val + 1, max);
2994 gst_value_subtract_int_range_int_range (GValue * dest, const GValue * minuend,
2995 const GValue * subtrahend)
2997 gint min1 = gst_value_get_int_range_min (minuend);
2998 gint max1 = gst_value_get_int_range_max (minuend);
2999 gint min2 = gst_value_get_int_range_min (subtrahend);
3000 gint max2 = gst_value_get_int_range_max (subtrahend);
3002 if (max2 == G_MAXINT && min2 == G_MININT) {
3004 } else if (max2 == G_MAXINT) {
3005 return gst_value_create_new_range (dest, min1, MIN (min2 - 1, max1), 1, 0);
3006 } else if (min2 == G_MININT) {
3007 return gst_value_create_new_range (dest, MAX (max2 + 1, min1), max1, 1, 0);
3009 return gst_value_create_new_range (dest, min1, MIN (min2 - 1, max1),
3010 MAX (max2 + 1, min1), max1);
3015 gst_value_subtract_int64_int64_range (GValue * dest, const GValue * minuend,
3016 const GValue * subtrahend)
3018 gint64 min = gst_value_get_int64_range_min (subtrahend);
3019 gint64 max = gst_value_get_int64_range_max (subtrahend);
3020 gint64 val = g_value_get_int64 (minuend);
3022 /* subtracting a range from an int64 only works if the int64 is not in the
3024 if (val < min || val > max) {
3025 /* and the result is the int64 */
3027 gst_value_init_and_copy (dest, minuend);
3033 /* creates a new int64 range based on input values.
3036 gst_value_create_new_int64_range (GValue * dest, gint64 min1, gint64 max1,
3037 gint64 min2, gint64 max2)
3041 GValue *pv1, *pv2; /* yeah, hungarian! */
3043 if (min1 <= max1 && min2 <= max2) {
3046 } else if (min1 <= max1) {
3049 } else if (min2 <= max2) {
3060 g_value_init (pv1, GST_TYPE_INT64_RANGE);
3061 gst_value_set_int64_range (pv1, min1, max1);
3062 } else if (min1 == max1) {
3063 g_value_init (pv1, G_TYPE_INT64);
3064 g_value_set_int64 (pv1, min1);
3067 g_value_init (pv2, GST_TYPE_INT64_RANGE);
3068 gst_value_set_int64_range (pv2, min2, max2);
3069 } else if (min2 == max2) {
3070 g_value_init (pv2, G_TYPE_INT64);
3071 g_value_set_int64 (pv2, min2);
3074 if (min1 <= max1 && min2 <= max2) {
3075 gst_value_list_concat (dest, pv1, pv2);
3076 g_value_unset (pv1);
3077 g_value_unset (pv2);
3083 gst_value_subtract_int64_range_int64 (GValue * dest, const GValue * minuend,
3084 const GValue * subtrahend)
3086 gint64 min = gst_value_get_int64_range_min (minuend);
3087 gint64 max = gst_value_get_int64_range_max (minuend);
3088 gint64 val = g_value_get_int64 (subtrahend);
3090 g_return_val_if_fail (min < max, FALSE);
3092 /* value is outside of the range, return range unchanged */
3093 if (val < min || val > max) {
3095 gst_value_init_and_copy (dest, minuend);
3098 /* max must be MAXINT64 too as val <= max */
3099 if (val == G_MAXINT64) {
3103 /* min must be MININT64 too as val >= max */
3104 if (val == G_MININT64) {
3109 gst_value_create_new_int64_range (dest, min, val - 1, val + 1, max);
3115 gst_value_subtract_int64_range_int64_range (GValue * dest,
3116 const GValue * minuend, const GValue * subtrahend)
3118 gint64 min1 = gst_value_get_int64_range_min (minuend);
3119 gint64 max1 = gst_value_get_int64_range_max (minuend);
3120 gint64 min2 = gst_value_get_int64_range_min (subtrahend);
3121 gint64 max2 = gst_value_get_int64_range_max (subtrahend);
3123 if (max2 == G_MAXINT64 && min2 == G_MININT64) {
3125 } else if (max2 == G_MAXINT64) {
3126 return gst_value_create_new_int64_range (dest, min1, MIN (min2 - 1, max1),
3128 } else if (min2 == G_MININT64) {
3129 return gst_value_create_new_int64_range (dest, MAX (max2 + 1, min1), max1,
3132 return gst_value_create_new_int64_range (dest, min1, MIN (min2 - 1, max1),
3133 MAX (max2 + 1, min1), max1);
3138 gst_value_subtract_double_double_range (GValue * dest, const GValue * minuend,
3139 const GValue * subtrahend)
3141 gdouble min = gst_value_get_double_range_min (subtrahend);
3142 gdouble max = gst_value_get_double_range_max (subtrahend);
3143 gdouble val = g_value_get_double (minuend);
3145 if (val < min || val > max) {
3147 gst_value_init_and_copy (dest, minuend);
3154 gst_value_subtract_double_range_double (GValue * dest, const GValue * minuend,
3155 const GValue * subtrahend)
3157 /* since we don't have open ranges, we cannot create a hole in
3158 * a double range. We return the original range */
3160 gst_value_init_and_copy (dest, minuend);
3165 gst_value_subtract_double_range_double_range (GValue * dest,
3166 const GValue * minuend, const GValue * subtrahend)
3168 /* since we don't have open ranges, we have to approximate */
3169 /* done like with ints */
3170 gdouble min1 = gst_value_get_double_range_min (minuend);
3171 gdouble max2 = gst_value_get_double_range_max (minuend);
3172 gdouble max1 = MIN (gst_value_get_double_range_min (subtrahend), max2);
3173 gdouble min2 = MAX (gst_value_get_double_range_max (subtrahend), min1);
3176 GValue *pv1, *pv2; /* yeah, hungarian! */
3178 if (min1 < max1 && min2 < max2) {
3181 } else if (min1 < max1) {
3184 } else if (min2 < max2) {
3195 g_value_init (pv1, GST_TYPE_DOUBLE_RANGE);
3196 gst_value_set_double_range (pv1, min1, max1);
3199 g_value_init (pv2, GST_TYPE_DOUBLE_RANGE);
3200 gst_value_set_double_range (pv2, min2, max2);
3203 if (min1 < max1 && min2 < max2) {
3204 gst_value_list_concat (dest, pv1, pv2);
3205 g_value_unset (pv1);
3206 g_value_unset (pv2);
3212 gst_value_subtract_from_list (GValue * dest, const GValue * minuend,
3213 const GValue * subtrahend)
3216 GValue subtraction = { 0, };
3217 gboolean ret = FALSE;
3220 ltype = gst_value_list_get_type ();
3222 size = VALUE_LIST_SIZE (minuend);
3223 for (i = 0; i < size; i++) {
3224 const GValue *cur = VALUE_LIST_GET_VALUE (minuend, i);
3226 /* quicker version when we can discard the result */
3228 if (gst_value_subtract (NULL, cur, subtrahend)) {
3235 if (gst_value_subtract (&subtraction, cur, subtrahend)) {
3237 gst_value_init_and_copy (dest, &subtraction);
3239 } else if (G_VALUE_HOLDS (dest, ltype)
3240 && !G_VALUE_HOLDS (&subtraction, ltype)) {
3241 gst_value_list_append_value (dest, &subtraction);
3243 GValue temp = { 0, };
3245 gst_value_init_and_copy (&temp, dest);
3246 g_value_unset (dest);
3247 gst_value_list_concat (dest, &temp, &subtraction);
3248 g_value_unset (&temp);
3250 g_value_unset (&subtraction);
3257 gst_value_subtract_list (GValue * dest, const GValue * minuend,
3258 const GValue * subtrahend)
3261 GValue data[2] = { {0,}, {0,} };
3262 GValue *subtraction = &data[0], *result = &data[1];
3264 gst_value_init_and_copy (result, minuend);
3265 size = VALUE_LIST_SIZE (subtrahend);
3266 for (i = 0; i < size; i++) {
3267 const GValue *cur = VALUE_LIST_GET_VALUE (subtrahend, i);
3269 if (gst_value_subtract (subtraction, result, cur)) {
3270 GValue *temp = result;
3272 result = subtraction;
3274 g_value_unset (subtraction);
3276 g_value_unset (result);
3281 gst_value_init_and_copy (dest, result);
3282 g_value_unset (result);
3287 gst_value_subtract_fraction_fraction_range (GValue * dest,
3288 const GValue * minuend, const GValue * subtrahend)
3290 const GValue *min = gst_value_get_fraction_range_min (subtrahend);
3291 const GValue *max = gst_value_get_fraction_range_max (subtrahend);
3292 GstValueCompareFunc compare;
3294 if ((compare = gst_value_get_compare_func (minuend))) {
3295 /* subtracting a range from an fraction only works if the fraction
3296 * is not in the range */
3297 if (gst_value_compare_with_func (minuend, min, compare) ==
3298 GST_VALUE_LESS_THAN ||
3299 gst_value_compare_with_func (minuend, max, compare) ==
3300 GST_VALUE_GREATER_THAN) {
3301 /* and the result is the value */
3303 gst_value_init_and_copy (dest, minuend);
3311 gst_value_subtract_fraction_range_fraction (GValue * dest,
3312 const GValue * minuend, const GValue * subtrahend)
3314 /* since we don't have open ranges, we cannot create a hole in
3315 * a range. We return the original range */
3317 gst_value_init_and_copy (dest, minuend);
3322 gst_value_subtract_fraction_range_fraction_range (GValue * dest,
3323 const GValue * minuend, const GValue * subtrahend)
3325 /* since we don't have open ranges, we have to approximate */
3326 /* done like with ints and doubles. Creates a list of 2 fraction ranges */
3327 const GValue *min1 = gst_value_get_fraction_range_min (minuend);
3328 const GValue *max2 = gst_value_get_fraction_range_max (minuend);
3329 const GValue *max1 = gst_value_get_fraction_range_min (subtrahend);
3330 const GValue *min2 = gst_value_get_fraction_range_max (subtrahend);
3334 GValue *pv1, *pv2; /* yeah, hungarian! */
3335 GstValueCompareFunc compare;
3337 g_return_val_if_fail (min1 != NULL && max1 != NULL, FALSE);
3338 g_return_val_if_fail (min2 != NULL && max2 != NULL, FALSE);
3340 compare = gst_value_get_compare_func (min1);
3341 g_return_val_if_fail (compare, FALSE);
3343 cmp1 = gst_value_compare_with_func (max2, max1, compare);
3344 g_return_val_if_fail (cmp1 != GST_VALUE_UNORDERED, FALSE);
3345 if (cmp1 == GST_VALUE_LESS_THAN)
3347 cmp1 = gst_value_compare_with_func (min1, min2, compare);
3348 g_return_val_if_fail (cmp1 != GST_VALUE_UNORDERED, FALSE);
3349 if (cmp1 == GST_VALUE_GREATER_THAN)
3352 cmp1 = gst_value_compare_with_func (min1, max1, compare);
3353 cmp2 = gst_value_compare_with_func (min2, max2, compare);
3355 if (cmp1 == GST_VALUE_LESS_THAN && cmp2 == GST_VALUE_LESS_THAN) {
3358 } else if (cmp1 == GST_VALUE_LESS_THAN) {
3361 } else if (cmp2 == GST_VALUE_LESS_THAN) {
3371 if (cmp1 == GST_VALUE_LESS_THAN) {
3372 g_value_init (pv1, GST_TYPE_FRACTION_RANGE);
3373 gst_value_set_fraction_range (pv1, min1, max1);
3375 if (cmp2 == GST_VALUE_LESS_THAN) {
3376 g_value_init (pv2, GST_TYPE_FRACTION_RANGE);
3377 gst_value_set_fraction_range (pv2, min2, max2);
3380 if (cmp1 == GST_VALUE_LESS_THAN && cmp2 == GST_VALUE_LESS_THAN) {
3381 gst_value_list_concat (dest, pv1, pv2);
3382 g_value_unset (pv1);
3383 g_value_unset (pv2);
3394 * gst_value_get_compare_func:
3395 * @value1: a value to get the compare function for
3397 * Determines the compare function to be used with values of the same type as
3398 * @value1. The function can be given to gst_value_compare_with_func().
3400 * Returns: A #GstValueCompareFunc value
3402 static GstValueCompareFunc
3403 gst_value_get_compare_func (const GValue * value1)
3405 GstValueTable *table, *best = NULL;
3409 type1 = G_VALUE_TYPE (value1);
3411 /* this is a fast check */
3412 best = gst_value_hash_lookup_type (type1);
3415 if (G_UNLIKELY (!best || !best->compare)) {
3416 guint len = gst_value_table->len;
3419 for (i = 0; i < len; i++) {
3420 table = &g_array_index (gst_value_table, GstValueTable, i);
3421 if (table->compare && g_type_is_a (type1, table->type)) {
3422 if (!best || g_type_is_a (table->type, best->type))
3427 if (G_LIKELY (best))
3428 return best->compare;
3434 * gst_value_can_compare:
3435 * @value1: a value to compare
3436 * @value2: another value to compare
3438 * Determines if @value1 and @value2 can be compared.
3440 * Returns: TRUE if the values can be compared
3443 gst_value_can_compare (const GValue * value1, const GValue * value2)
3445 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3446 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3448 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3451 return gst_value_get_compare_func (value1) != NULL;
3455 gst_value_list_equals_range (const GValue * list, const GValue * value)
3457 const GValue *first;
3460 g_return_val_if_fail (G_IS_VALUE (list), FALSE);
3461 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
3462 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (list), FALSE);
3464 /* TODO: compare against an empty list ? No type though... */
3465 list_size = VALUE_LIST_SIZE (list);
3469 /* compare the basic types - they have to match */
3470 first = VALUE_LIST_GET_VALUE (list, 0);
3471 #define CHECK_TYPES(type,prefix) \
3472 (prefix##_VALUE_HOLDS_##type(first) && GST_VALUE_HOLDS_##type##_RANGE (value))
3473 if (CHECK_TYPES (INT, G)) {
3474 const gint rmin = gst_value_get_int_range_min (value);
3475 const gint rmax = gst_value_get_int_range_max (value);
3476 /* note: this will overflow for min 0 and max INT_MAX, but this
3477 would only be equal to a list of INT_MAX elements, which seems
3479 if (list_size != rmax - rmin + 1)
3481 for (n = 0; n < list_size; ++n) {
3482 gint v = g_value_get_int (VALUE_LIST_GET_VALUE (list, n));
3483 if (v < rmin || v > rmax) {
3488 } else if (CHECK_TYPES (INT64, G)) {
3489 const gint64 rmin = gst_value_get_int64_range_min (value);
3490 const gint64 rmax = gst_value_get_int64_range_max (value);
3491 GST_DEBUG ("List/range of int64s");
3492 if (list_size != rmax - rmin + 1)
3494 for (n = 0; n < list_size; ++n) {
3495 gint64 v = g_value_get_int64 (VALUE_LIST_GET_VALUE (list, n));
3496 if (v < rmin || v > rmax)
3503 /* other combinations don't make sense for equality */
3508 * gst_value_compare:
3509 * @value1: a value to compare
3510 * @value2: another value to compare
3512 * Compares @value1 and @value2. If @value1 and @value2 cannot be
3513 * compared, the function returns GST_VALUE_UNORDERED. Otherwise,
3514 * if @value1 is greater than @value2, GST_VALUE_GREATER_THAN is returned.
3515 * If @value1 is less than @value2, GST_VALUE_LESS_THAN is returned.
3516 * If the values are equal, GST_VALUE_EQUAL is returned.
3518 * Returns: comparison result
3521 gst_value_compare (const GValue * value1, const GValue * value2)
3523 GstValueCompareFunc compare;
3526 g_return_val_if_fail (G_IS_VALUE (value1), GST_VALUE_LESS_THAN);
3527 g_return_val_if_fail (G_IS_VALUE (value2), GST_VALUE_GREATER_THAN);
3529 /* Special cases: lists and scalar values ("{ 1 }" and "1" are equal),
3530 as well as lists and ranges ("{ 1, 2 }" and "[ 1, 2 ]" are equal) */
3531 ltype = gst_value_list_get_type ();
3532 if (G_VALUE_HOLDS (value1, ltype) && !G_VALUE_HOLDS (value2, ltype)) {
3534 if (gst_value_list_equals_range (value1, value2)) {
3535 return GST_VALUE_EQUAL;
3536 } else if (gst_value_list_get_size (value1) == 1) {
3539 elt = gst_value_list_get_value (value1, 0);
3540 return gst_value_compare (elt, value2);
3542 } else if (G_VALUE_HOLDS (value2, ltype) && !G_VALUE_HOLDS (value1, ltype)) {
3543 if (gst_value_list_equals_range (value2, value1)) {
3544 return GST_VALUE_EQUAL;
3545 } else if (gst_value_list_get_size (value2) == 1) {
3548 elt = gst_value_list_get_value (value2, 0);
3549 return gst_value_compare (elt, value1);
3553 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3554 return GST_VALUE_UNORDERED;
3556 compare = gst_value_get_compare_func (value1);
3558 return compare (value1, value2);
3561 g_critical ("unable to compare values of type %s\n",
3562 g_type_name (G_VALUE_TYPE (value1)));
3563 return GST_VALUE_UNORDERED;
3567 * gst_value_compare_with_func:
3568 * @value1: a value to compare
3569 * @value2: another value to compare
3570 * @compare: compare function
3572 * Compares @value1 and @value2 using the @compare function. Works like
3573 * gst_value_compare() but allows to save time determining the compare function
3576 * Returns: comparison result
3579 gst_value_compare_with_func (const GValue * value1, const GValue * value2,
3580 GstValueCompareFunc compare)
3584 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3585 return GST_VALUE_UNORDERED;
3587 return compare (value1, value2);
3593 * gst_value_can_union:
3594 * @value1: a value to union
3595 * @value2: another value to union
3597 * Determines if @value1 and @value2 can be non-trivially unioned.
3598 * Any two values can be trivially unioned by adding both of them
3599 * to a GstValueList. However, certain types have the possibility
3600 * to be unioned in a simpler way. For example, an integer range
3601 * and an integer can be unioned if the integer is a subset of the
3602 * integer range. If there is the possibility that two values can
3603 * be unioned, this function returns TRUE.
3605 * Returns: TRUE if there is a function allowing the two values to
3609 gst_value_can_union (const GValue * value1, const GValue * value2)
3611 GstValueUnionInfo *union_info;
3614 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3615 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3617 len = gst_value_union_funcs->len;
3619 for (i = 0; i < len; i++) {
3620 union_info = &g_array_index (gst_value_union_funcs, GstValueUnionInfo, i);
3621 if (union_info->type1 == G_VALUE_TYPE (value1) &&
3622 union_info->type2 == G_VALUE_TYPE (value2))
3624 if (union_info->type1 == G_VALUE_TYPE (value2) &&
3625 union_info->type2 == G_VALUE_TYPE (value1))
3634 * @dest: (out caller-allocates): the destination value
3635 * @value1: a value to union
3636 * @value2: another value to union
3638 * Creates a GValue corresponding to the union of @value1 and @value2.
3640 * Returns: always returns %TRUE
3642 /* FIXME: change return type to 'void'? */
3644 gst_value_union (GValue * dest, const GValue * value1, const GValue * value2)
3646 GstValueUnionInfo *union_info;
3649 g_return_val_if_fail (dest != NULL, FALSE);
3650 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3651 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3653 len = gst_value_union_funcs->len;
3655 for (i = 0; i < len; i++) {
3656 union_info = &g_array_index (gst_value_union_funcs, GstValueUnionInfo, i);
3657 if (union_info->type1 == G_VALUE_TYPE (value1) &&
3658 union_info->type2 == G_VALUE_TYPE (value2)) {
3659 if (union_info->func (dest, value1, value2)) {
3663 if (union_info->type1 == G_VALUE_TYPE (value2) &&
3664 union_info->type2 == G_VALUE_TYPE (value1)) {
3665 if (union_info->func (dest, value2, value1)) {
3671 gst_value_list_concat (dest, value1, value2);
3676 * gst_value_register_union_func:
3677 * @type1: a type to union
3678 * @type2: another type to union
3679 * @func: a function that implements creating a union between the two types
3681 * Registers a union function that can create a union between #GValue items
3682 * of the type @type1 and @type2.
3684 * Union functions should be registered at startup before any pipelines are
3685 * started, as gst_value_register_union_func() is not thread-safe and cannot
3686 * be used at the same time as gst_value_union() or gst_value_can_union().
3689 gst_value_register_union_func (GType type1, GType type2, GstValueUnionFunc func)
3691 GstValueUnionInfo union_info;
3693 union_info.type1 = type1;
3694 union_info.type2 = type2;
3695 union_info.func = func;
3697 g_array_append_val (gst_value_union_funcs, union_info);
3703 * gst_value_can_intersect:
3704 * @value1: a value to intersect
3705 * @value2: another value to intersect
3707 * Determines if intersecting two values will produce a valid result.
3708 * Two values will produce a valid intersection if they have the same
3709 * type, or if there is a method (registered by
3710 * gst_value_register_intersect_func()) to calculate the intersection.
3712 * Returns: TRUE if the values can intersect
3715 gst_value_can_intersect (const GValue * value1, const GValue * value2)
3717 GstValueIntersectInfo *intersect_info;
3719 GType ltype, type1, type2;
3721 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3722 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3724 ltype = gst_value_list_get_type ();
3727 if (G_VALUE_HOLDS (value1, ltype) || G_VALUE_HOLDS (value2, ltype))
3730 type1 = G_VALUE_TYPE (value1);
3731 type2 = G_VALUE_TYPE (value2);
3733 /* practically all GstValue types have a compare function (_can_compare=TRUE)
3734 * GstStructure and GstCaps have npot, but are intersectable */
3738 /* check registered intersect functions */
3739 len = gst_value_intersect_funcs->len;
3740 for (i = 0; i < len; i++) {
3741 intersect_info = &g_array_index (gst_value_intersect_funcs,
3742 GstValueIntersectInfo, i);
3743 if ((intersect_info->type1 == type1 && intersect_info->type2 == type2) ||
3744 (intersect_info->type1 == type2 && intersect_info->type2 == type1))
3748 return gst_value_can_compare (value1, value2);
3752 * gst_value_intersect:
3753 * @dest: (out caller-allocates): a uninitialized #GValue that will hold the calculated
3754 * intersection value. May be NULL if the resulting set if not needed.
3755 * @value1: a value to intersect
3756 * @value2: another value to intersect
3758 * Calculates the intersection of two values. If the values have
3759 * a non-empty intersection, the value representing the intersection
3760 * is placed in @dest, unless NULL. If the intersection is non-empty,
3761 * @dest is not modified.
3763 * Returns: TRUE if the intersection is non-empty
3766 gst_value_intersect (GValue * dest, const GValue * value1,
3767 const GValue * value2)
3769 GstValueIntersectInfo *intersect_info;
3771 GType ltype, type1, type2;
3773 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3774 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3776 ltype = gst_value_list_get_type ();
3778 /* special cases first */
3779 if (G_VALUE_HOLDS (value1, ltype))
3780 return gst_value_intersect_list (dest, value1, value2);
3781 if (G_VALUE_HOLDS (value2, ltype))
3782 return gst_value_intersect_list (dest, value2, value1);
3784 if (gst_value_compare (value1, value2) == GST_VALUE_EQUAL) {
3786 gst_value_init_and_copy (dest, value1);
3790 type1 = G_VALUE_TYPE (value1);
3791 type2 = G_VALUE_TYPE (value2);
3793 len = gst_value_intersect_funcs->len;
3794 for (i = 0; i < len; i++) {
3795 intersect_info = &g_array_index (gst_value_intersect_funcs,
3796 GstValueIntersectInfo, i);
3797 if (intersect_info->type1 == type1 && intersect_info->type2 == type2) {
3798 return intersect_info->func (dest, value1, value2);
3800 if (intersect_info->type1 == type2 && intersect_info->type2 == type1) {
3801 return intersect_info->func (dest, value2, value1);
3810 * gst_value_register_intersect_func:
3811 * @type1: the first type to intersect
3812 * @type2: the second type to intersect
3813 * @func: the intersection function
3815 * Registers a function that is called to calculate the intersection
3816 * of the values having the types @type1 and @type2.
3818 * Intersect functions should be registered at startup before any pipelines are
3819 * started, as gst_value_register_intersect_func() is not thread-safe and
3820 * cannot be used at the same time as gst_value_intersect() or
3821 * gst_value_can_intersect().
3824 gst_value_register_intersect_func (GType type1, GType type2,
3825 GstValueIntersectFunc func)
3827 GstValueIntersectInfo intersect_info;
3829 intersect_info.type1 = type1;
3830 intersect_info.type2 = type2;
3831 intersect_info.func = func;
3833 g_array_append_val (gst_value_intersect_funcs, intersect_info);
3840 * gst_value_subtract:
3841 * @dest: (out caller-allocates): the destination value for the result if the
3842 * subtraction is not empty. May be NULL, in which case the resulting set
3843 * will not be computed, which can give a fair speedup.
3844 * @minuend: the value to subtract from
3845 * @subtrahend: the value to subtract
3847 * Subtracts @subtrahend from @minuend and stores the result in @dest.
3848 * Note that this means subtraction as in sets, not as in mathematics.
3850 * Returns: %TRUE if the subtraction is not empty
3853 gst_value_subtract (GValue * dest, const GValue * minuend,
3854 const GValue * subtrahend)
3856 GstValueSubtractInfo *info;
3858 GType ltype, mtype, stype;
3860 g_return_val_if_fail (G_IS_VALUE (minuend), FALSE);
3861 g_return_val_if_fail (G_IS_VALUE (subtrahend), FALSE);
3863 ltype = gst_value_list_get_type ();
3865 /* special cases first */
3866 if (G_VALUE_HOLDS (minuend, ltype))
3867 return gst_value_subtract_from_list (dest, minuend, subtrahend);
3868 if (G_VALUE_HOLDS (subtrahend, ltype))
3869 return gst_value_subtract_list (dest, minuend, subtrahend);
3871 mtype = G_VALUE_TYPE (minuend);
3872 stype = G_VALUE_TYPE (subtrahend);
3874 len = gst_value_subtract_funcs->len;
3875 for (i = 0; i < len; i++) {
3876 info = &g_array_index (gst_value_subtract_funcs, GstValueSubtractInfo, i);
3877 if (info->minuend == mtype && info->subtrahend == stype) {
3878 return info->func (dest, minuend, subtrahend);
3882 if (gst_value_compare (minuend, subtrahend) != GST_VALUE_EQUAL) {
3884 gst_value_init_and_copy (dest, minuend);
3893 gst_value_subtract (GValue * dest, const GValue * minuend,
3894 const GValue * subtrahend)
3896 gboolean ret = gst_value_subtract2 (dest, minuend, subtrahend);
3898 g_printerr ("\"%s\" - \"%s\" = \"%s\"\n", gst_value_serialize (minuend),
3899 gst_value_serialize (subtrahend),
3900 ret ? gst_value_serialize (dest) : "---");
3906 * gst_value_can_subtract:
3907 * @minuend: the value to subtract from
3908 * @subtrahend: the value to subtract
3910 * Checks if it's possible to subtract @subtrahend from @minuend.
3912 * Returns: TRUE if a subtraction is possible
3915 gst_value_can_subtract (const GValue * minuend, const GValue * subtrahend)
3917 GstValueSubtractInfo *info;
3919 GType ltype, mtype, stype;
3921 g_return_val_if_fail (G_IS_VALUE (minuend), FALSE);
3922 g_return_val_if_fail (G_IS_VALUE (subtrahend), FALSE);
3924 ltype = gst_value_list_get_type ();
3927 if (G_VALUE_HOLDS (minuend, ltype) || G_VALUE_HOLDS (subtrahend, ltype))
3930 mtype = G_VALUE_TYPE (minuend);
3931 stype = G_VALUE_TYPE (subtrahend);
3933 len = gst_value_subtract_funcs->len;
3934 for (i = 0; i < len; i++) {
3935 info = &g_array_index (gst_value_subtract_funcs, GstValueSubtractInfo, i);
3936 if (info->minuend == mtype && info->subtrahend == stype)
3940 return gst_value_can_compare (minuend, subtrahend);
3944 * gst_value_register_subtract_func:
3945 * @minuend_type: type of the minuend
3946 * @subtrahend_type: type of the subtrahend
3947 * @func: function to use
3949 * Registers @func as a function capable of subtracting the values of
3950 * @subtrahend_type from values of @minuend_type.
3952 * Subtract functions should be registered at startup before any pipelines are
3953 * started, as gst_value_register_subtract_func() is not thread-safe and
3954 * cannot be used at the same time as gst_value_subtract().
3957 gst_value_register_subtract_func (GType minuend_type, GType subtrahend_type,
3958 GstValueSubtractFunc func)
3960 GstValueSubtractInfo info;
3962 /* one type must be unfixed, other subtractions can be done as comparisons */
3963 g_return_if_fail (!gst_type_is_fixed (minuend_type)
3964 || !gst_type_is_fixed (subtrahend_type));
3966 info.minuend = minuend_type;
3967 info.subtrahend = subtrahend_type;
3970 g_array_append_val (gst_value_subtract_funcs, info);
3974 * gst_value_register:
3975 * @table: structure containing functions to register
3977 * Registers functions to perform calculations on #GValue items of a given
3978 * type. Each type can only be added once.
3981 gst_value_register (const GstValueTable * table)
3983 GstValueTable *found;
3985 g_return_if_fail (table != NULL);
3987 g_array_append_val (gst_value_table, *table);
3989 found = gst_value_hash_lookup_type (table->type);
3991 g_warning ("adding type %s multiple times", g_type_name (table->type));
3993 /* FIXME: we're not really doing the const justice, we assume the table is
3995 gst_value_hash_add_type (table->type, table);
3999 * gst_value_init_and_copy:
4000 * @dest: (out caller-allocates): the target value
4001 * @src: the source value
4003 * Initialises the target value to be of the same type as source and then copies
4004 * the contents from source to target.
4007 gst_value_init_and_copy (GValue * dest, const GValue * src)
4009 g_return_if_fail (G_IS_VALUE (src));
4010 g_return_if_fail (dest != NULL);
4012 g_value_init (dest, G_VALUE_TYPE (src));
4013 g_value_copy (src, dest);
4017 * gst_value_serialize:
4018 * @value: a #GValue to serialize
4020 * tries to transform the given @value into a string representation that allows
4021 * getting back this string later on using gst_value_deserialize().
4023 * Free-function: g_free
4025 * Returns: (transfer full): the serialization for @value or NULL if none exists
4028 gst_value_serialize (const GValue * value)
4031 GValue s_val = { 0 };
4032 GstValueTable *table, *best;
4036 g_return_val_if_fail (G_IS_VALUE (value), NULL);
4038 type = G_VALUE_TYPE (value);
4040 best = gst_value_hash_lookup_type (type);
4042 if (G_UNLIKELY (!best || !best->serialize)) {
4043 len = gst_value_table->len;
4045 for (i = 0; i < len; i++) {
4046 table = &g_array_index (gst_value_table, GstValueTable, i);
4047 if (table->serialize && g_type_is_a (type, table->type)) {
4048 if (!best || g_type_is_a (table->type, best->type))
4053 if (G_LIKELY (best))
4054 return best->serialize (value);
4056 g_value_init (&s_val, G_TYPE_STRING);
4057 if (g_value_transform (value, &s_val)) {
4058 s = gst_string_wrap (g_value_get_string (&s_val));
4062 g_value_unset (&s_val);
4068 * gst_value_deserialize:
4069 * @dest: (out caller-allocates): #GValue to fill with contents of
4071 * @src: string to deserialize
4073 * Tries to deserialize a string into the type specified by the given GValue.
4074 * If the operation succeeds, TRUE is returned, FALSE otherwise.
4076 * Returns: TRUE on success
4079 gst_value_deserialize (GValue * dest, const gchar * src)
4081 GstValueTable *table, *best;
4085 g_return_val_if_fail (src != NULL, FALSE);
4086 g_return_val_if_fail (G_IS_VALUE (dest), FALSE);
4088 type = G_VALUE_TYPE (dest);
4090 best = gst_value_hash_lookup_type (type);
4091 if (G_UNLIKELY (!best || !best->deserialize)) {
4092 len = gst_value_table->len;
4094 for (i = 0; i < len; i++) {
4095 table = &g_array_index (gst_value_table, GstValueTable, i);
4096 if (table->deserialize && g_type_is_a (type, table->type)) {
4097 if (!best || g_type_is_a (table->type, best->type))
4102 if (G_LIKELY (best))
4103 return best->deserialize (dest, src);
4109 * gst_value_is_fixed:
4110 * @value: the #GValue to check
4112 * Tests if the given GValue, if available in a GstStructure (or any other
4113 * container) contains a "fixed" (which means: one value) or an "unfixed"
4114 * (which means: multiple possible values, such as data lists or data
4117 * Returns: true if the value is "fixed".
4121 gst_value_is_fixed (const GValue * value)
4125 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
4127 type = G_VALUE_TYPE (value);
4129 /* the most common types are just basic plain glib types */
4130 if (type <= G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
4134 if (type == GST_TYPE_ARRAY) {
4138 /* check recursively */
4139 size = gst_value_array_get_size (value);
4140 for (n = 0; n < size; n++) {
4141 kid = gst_value_array_get_value (value, n);
4142 if (!gst_value_is_fixed (kid))
4147 return gst_type_is_fixed (type);
4154 /* helper functions */
4156 gst_value_init_fraction (GValue * value)
4158 value->data[0].v_int = 0;
4159 value->data[1].v_int = 1;
4163 gst_value_copy_fraction (const GValue * src_value, GValue * dest_value)
4165 dest_value->data[0].v_int = src_value->data[0].v_int;
4166 dest_value->data[1].v_int = src_value->data[1].v_int;
4170 gst_value_collect_fraction (GValue * value, guint n_collect_values,
4171 GTypeCValue * collect_values, guint collect_flags)
4173 if (n_collect_values != 2)
4174 return g_strdup_printf ("not enough value locations for `%s' passed",
4175 G_VALUE_TYPE_NAME (value));
4176 if (collect_values[1].v_int == 0)
4177 return g_strdup_printf ("passed '0' as denominator for `%s'",
4178 G_VALUE_TYPE_NAME (value));
4179 if (collect_values[0].v_int < -G_MAXINT)
4182 ("passed value smaller than -G_MAXINT as numerator for `%s'",
4183 G_VALUE_TYPE_NAME (value));
4184 if (collect_values[1].v_int < -G_MAXINT)
4187 ("passed value smaller than -G_MAXINT as denominator for `%s'",
4188 G_VALUE_TYPE_NAME (value));
4190 gst_value_set_fraction (value,
4191 collect_values[0].v_int, collect_values[1].v_int);
4197 gst_value_lcopy_fraction (const GValue * value, guint n_collect_values,
4198 GTypeCValue * collect_values, guint collect_flags)
4200 gint *numerator = collect_values[0].v_pointer;
4201 gint *denominator = collect_values[1].v_pointer;
4204 return g_strdup_printf ("numerator for `%s' passed as NULL",
4205 G_VALUE_TYPE_NAME (value));
4207 return g_strdup_printf ("denominator for `%s' passed as NULL",
4208 G_VALUE_TYPE_NAME (value));
4210 *numerator = value->data[0].v_int;
4211 *denominator = value->data[1].v_int;
4217 * gst_value_set_fraction:
4218 * @value: a GValue initialized to #GST_TYPE_FRACTION
4219 * @numerator: the numerator of the fraction
4220 * @denominator: the denominator of the fraction
4222 * Sets @value to the fraction specified by @numerator over @denominator.
4223 * The fraction gets reduced to the smallest numerator and denominator,
4224 * and if necessary the sign is moved to the numerator.
4227 gst_value_set_fraction (GValue * value, gint numerator, gint denominator)
4231 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (value));
4232 g_return_if_fail (denominator != 0);
4233 g_return_if_fail (denominator >= -G_MAXINT);
4234 g_return_if_fail (numerator >= -G_MAXINT);
4236 /* normalize sign */
4237 if (denominator < 0) {
4238 numerator = -numerator;
4239 denominator = -denominator;
4242 /* check for reduction */
4243 gcd = gst_util_greatest_common_divisor (numerator, denominator);
4249 g_assert (denominator > 0);
4251 value->data[0].v_int = numerator;
4252 value->data[1].v_int = denominator;
4256 * gst_value_get_fraction_numerator:
4257 * @value: a GValue initialized to #GST_TYPE_FRACTION
4259 * Gets the numerator of the fraction specified by @value.
4261 * Returns: the numerator of the fraction.
4264 gst_value_get_fraction_numerator (const GValue * value)
4266 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (value), 0);
4268 return value->data[0].v_int;
4272 * gst_value_get_fraction_denominator:
4273 * @value: a GValue initialized to #GST_TYPE_FRACTION
4275 * Gets the denominator of the fraction specified by @value.
4277 * Returns: the denominator of the fraction.
4280 gst_value_get_fraction_denominator (const GValue * value)
4282 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (value), 1);
4284 return value->data[1].v_int;
4288 * gst_value_fraction_multiply:
4289 * @product: a GValue initialized to #GST_TYPE_FRACTION
4290 * @factor1: a GValue initialized to #GST_TYPE_FRACTION
4291 * @factor2: a GValue initialized to #GST_TYPE_FRACTION
4293 * Multiplies the two #GValue items containing a #GST_TYPE_FRACTION and sets
4294 * @product to the product of the two fractions.
4296 * Returns: FALSE in case of an error (like integer overflow), TRUE otherwise.
4299 gst_value_fraction_multiply (GValue * product, const GValue * factor1,
4300 const GValue * factor2)
4302 gint n1, n2, d1, d2;
4305 g_return_val_if_fail (product != NULL, FALSE);
4306 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (factor1), FALSE);
4307 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (factor2), FALSE);
4309 n1 = factor1->data[0].v_int;
4310 n2 = factor2->data[0].v_int;
4311 d1 = factor1->data[1].v_int;
4312 d2 = factor2->data[1].v_int;
4314 if (!gst_util_fraction_multiply (n1, d1, n2, d2, &res_n, &res_d))
4317 gst_value_set_fraction (product, res_n, res_d);
4323 * gst_value_fraction_subtract:
4324 * @dest: a GValue initialized to #GST_TYPE_FRACTION
4325 * @minuend: a GValue initialized to #GST_TYPE_FRACTION
4326 * @subtrahend: a GValue initialized to #GST_TYPE_FRACTION
4328 * Subtracts the @subtrahend from the @minuend and sets @dest to the result.
4330 * Returns: FALSE in case of an error (like integer overflow), TRUE otherwise.
4333 gst_value_fraction_subtract (GValue * dest,
4334 const GValue * minuend, const GValue * subtrahend)
4336 gint n1, n2, d1, d2;
4339 g_return_val_if_fail (dest != NULL, FALSE);
4340 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (minuend), FALSE);
4341 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (subtrahend), FALSE);
4343 n1 = minuend->data[0].v_int;
4344 n2 = subtrahend->data[0].v_int;
4345 d1 = minuend->data[1].v_int;
4346 d2 = subtrahend->data[1].v_int;
4348 if (!gst_util_fraction_add (n1, d1, -n2, d2, &res_n, &res_d))
4350 gst_value_set_fraction (dest, res_n, res_d);
4356 gst_value_serialize_fraction (const GValue * value)
4358 gint32 numerator = value->data[0].v_int;
4359 gint32 denominator = value->data[1].v_int;
4360 gboolean positive = TRUE;
4362 /* get the sign and make components absolute */
4363 if (numerator < 0) {
4364 numerator = -numerator;
4365 positive = !positive;
4367 if (denominator < 0) {
4368 denominator = -denominator;
4369 positive = !positive;
4372 return g_strdup_printf ("%s%d/%d",
4373 positive ? "" : "-", numerator, denominator);
4377 gst_value_deserialize_fraction (GValue * dest, const gchar * s)
4382 if (G_UNLIKELY (s == NULL))
4385 if (G_UNLIKELY (dest == NULL || !GST_VALUE_HOLDS_FRACTION (dest)))
4388 if (sscanf (s, "%d/%d%n", &num, &den, &num_chars) >= 2) {
4389 if (s[num_chars] != 0)
4394 gst_value_set_fraction (dest, num, den);
4396 } else if (g_ascii_strcasecmp (s, "1/max") == 0) {
4397 gst_value_set_fraction (dest, 1, G_MAXINT);
4399 } else if (sscanf (s, "%d%n", &num, &num_chars) >= 1) {
4400 if (s[num_chars] != 0)
4402 gst_value_set_fraction (dest, num, 1);
4404 } else if (g_ascii_strcasecmp (s, "min") == 0) {
4405 gst_value_set_fraction (dest, -G_MAXINT, 1);
4407 } else if (g_ascii_strcasecmp (s, "max") == 0) {
4408 gst_value_set_fraction (dest, G_MAXINT, 1);
4416 gst_value_transform_fraction_string (const GValue * src_value,
4417 GValue * dest_value)
4419 dest_value->data[0].v_pointer = gst_value_serialize_fraction (src_value);
4423 gst_value_transform_string_fraction (const GValue * src_value,
4424 GValue * dest_value)
4426 if (!gst_value_deserialize_fraction (dest_value,
4427 src_value->data[0].v_pointer))
4428 /* If the deserialize fails, ensure we leave the fraction in a
4429 * valid, if incorrect, state */
4430 gst_value_set_fraction (dest_value, 0, 1);
4434 gst_value_transform_double_fraction (const GValue * src_value,
4435 GValue * dest_value)
4437 gdouble src = g_value_get_double (src_value);
4440 gst_util_double_to_fraction (src, &n, &d);
4441 gst_value_set_fraction (dest_value, n, d);
4445 gst_value_transform_float_fraction (const GValue * src_value,
4446 GValue * dest_value)
4448 gfloat src = g_value_get_float (src_value);
4451 gst_util_double_to_fraction (src, &n, &d);
4452 gst_value_set_fraction (dest_value, n, d);
4456 gst_value_transform_fraction_double (const GValue * src_value,
4457 GValue * dest_value)
4459 dest_value->data[0].v_double = ((double) src_value->data[0].v_int) /
4460 ((double) src_value->data[1].v_int);
4464 gst_value_transform_fraction_float (const GValue * src_value,
4465 GValue * dest_value)
4467 dest_value->data[0].v_float = ((float) src_value->data[0].v_int) /
4468 ((float) src_value->data[1].v_int);
4472 gst_value_compare_fraction (const GValue * value1, const GValue * value2)
4478 n1 = value1->data[0].v_int;
4479 n2 = value2->data[0].v_int;
4480 d1 = value1->data[1].v_int;
4481 d2 = value2->data[1].v_int;
4483 /* fractions are reduced when set, so we can quickly see if they're equal */
4484 if (n1 == n2 && d1 == d2)
4485 return GST_VALUE_EQUAL;
4487 if (d1 == 0 && d2 == 0)
4488 return GST_VALUE_UNORDERED;
4490 return GST_VALUE_GREATER_THAN;
4492 return GST_VALUE_LESS_THAN;
4494 ret = gst_util_fraction_compare (n1, d1, n2, d2);
4496 return GST_VALUE_LESS_THAN;
4498 return GST_VALUE_GREATER_THAN;
4500 /* Equality can't happen here because we check for that
4502 g_return_val_if_reached (GST_VALUE_UNORDERED);
4510 * gst_value_set_date:
4511 * @value: a GValue initialized to GST_TYPE_DATE
4512 * @date: the date to set the value to
4514 * Sets the contents of @value to correspond to @date. The actual
4515 * #GDate structure is copied before it is used.
4518 gst_value_set_date (GValue * value, const GDate * date)
4520 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_DATE);
4521 g_return_if_fail (g_date_valid (date));
4523 g_value_set_boxed (value, date);
4527 * gst_value_get_date:
4528 * @value: a GValue initialized to GST_TYPE_DATE
4530 * Gets the contents of @value.
4532 * Returns: (transfer none): the contents of @value
4535 gst_value_get_date (const GValue * value)
4537 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_DATE, NULL);
4539 return (const GDate *) g_value_get_boxed (value);
4543 gst_date_copy (gpointer boxed)
4545 const GDate *date = (const GDate *) boxed;
4547 if (!g_date_valid (date)) {
4548 GST_WARNING ("invalid GDate");
4552 return g_date_new_julian (g_date_get_julian (date));
4556 gst_value_compare_date (const GValue * value1, const GValue * value2)
4558 const GDate *date1 = (const GDate *) g_value_get_boxed (value1);
4559 const GDate *date2 = (const GDate *) g_value_get_boxed (value2);
4563 return GST_VALUE_EQUAL;
4565 if ((date1 == NULL || !g_date_valid (date1))
4566 && (date2 != NULL && g_date_valid (date2))) {
4567 return GST_VALUE_LESS_THAN;
4570 if ((date2 == NULL || !g_date_valid (date2))
4571 && (date1 != NULL && g_date_valid (date1))) {
4572 return GST_VALUE_GREATER_THAN;
4575 if (date1 == NULL || date2 == NULL || !g_date_valid (date1)
4576 || !g_date_valid (date2)) {
4577 return GST_VALUE_UNORDERED;
4580 j1 = g_date_get_julian (date1);
4581 j2 = g_date_get_julian (date2);
4584 return GST_VALUE_EQUAL;
4586 return GST_VALUE_LESS_THAN;
4588 return GST_VALUE_GREATER_THAN;
4592 gst_value_serialize_date (const GValue * val)
4594 const GDate *date = (const GDate *) g_value_get_boxed (val);
4596 if (date == NULL || !g_date_valid (date))
4597 return g_strdup ("9999-99-99");
4599 return g_strdup_printf ("%04u-%02u-%02u", g_date_get_year (date),
4600 g_date_get_month (date), g_date_get_day (date));
4604 gst_value_deserialize_date (GValue * dest, const gchar * s)
4606 guint year, month, day;
4608 if (!s || sscanf (s, "%04u-%02u-%02u", &year, &month, &day) != 3)
4611 if (!g_date_valid_dmy (day, month, year))
4614 g_value_take_boxed (dest, g_date_new_dmy (day, month, year));
4623 gst_value_compare_date_time (const GValue * value1, const GValue * value2)
4625 const GstDateTime *date1 = (const GstDateTime *) g_value_get_boxed (value1);
4626 const GstDateTime *date2 = (const GstDateTime *) g_value_get_boxed (value2);
4630 return GST_VALUE_EQUAL;
4632 if ((date1 == NULL) && (date2 != NULL)) {
4633 return GST_VALUE_LESS_THAN;
4635 if ((date2 == NULL) && (date1 != NULL)) {
4636 return GST_VALUE_LESS_THAN;
4639 ret = priv_gst_date_time_compare (date1, date2);
4642 return GST_VALUE_EQUAL;
4644 return GST_VALUE_LESS_THAN;
4646 return GST_VALUE_GREATER_THAN;
4650 gst_value_serialize_date_time (const GValue * val)
4652 GstDateTime *date = (GstDateTime *) g_value_get_boxed (val);
4654 gint tzhour, tzminute;
4657 return g_strdup ("null");
4659 offset = gst_date_time_get_time_zone_offset (date);
4661 tzhour = (gint) ABS (offset);
4662 tzminute = (gint) ((ABS (offset) - tzhour) * 60);
4664 return g_strdup_printf ("\"%04d-%02d-%02dT%02d:%02d:%02d.%06d"
4665 "%c%02d%02d\"", gst_date_time_get_year (date),
4666 gst_date_time_get_month (date), gst_date_time_get_day (date),
4667 gst_date_time_get_hour (date), gst_date_time_get_minute (date),
4668 gst_date_time_get_second (date), gst_date_time_get_microsecond (date),
4669 offset >= 0 ? '+' : '-', tzhour, tzminute);
4673 gst_value_deserialize_date_time (GValue * dest, const gchar * s)
4675 gint year, month, day, hour, minute, second, usecond;
4678 gfloat tzoffset = 0;
4681 if (!s || strcmp (s, "null") == 0) {
4685 ret = sscanf (s, "%04d-%02d-%02dT%02d:%02d:%02d.%06d%c%04d",
4686 &year, &month, &day, &hour, &minute, &second, &usecond, &signal, &offset);
4688 tzoffset = (offset / 100) + ((offset % 100) / 60.0);
4690 tzoffset = -tzoffset;
4694 g_value_take_boxed (dest, gst_date_time_new (tzoffset, year, month, day, hour,
4695 minute, second + (usecond / 1000000.0)));
4700 gst_value_transform_date_string (const GValue * src_value, GValue * dest_value)
4702 dest_value->data[0].v_pointer = gst_value_serialize_date (src_value);
4706 gst_value_transform_string_date (const GValue * src_value, GValue * dest_value)
4708 gst_value_deserialize_date (dest_value, src_value->data[0].v_pointer);
4712 gst_value_transform_object_string (const GValue * src_value,
4713 GValue * dest_value)
4718 obj = g_value_get_object (src_value);
4721 g_strdup_printf ("(%s) %s", G_OBJECT_TYPE_NAME (obj),
4722 GST_OBJECT_NAME (obj));
4724 str = g_strdup ("NULL");
4727 dest_value->data[0].v_pointer = str;
4730 static GTypeInfo _info = {
4743 static GTypeFundamentalInfo _finfo = {
4747 #define FUNC_VALUE_GET_TYPE(type, name) \
4748 GType gst_ ## type ## _get_type (void) \
4750 static volatile GType gst_ ## type ## _type = 0; \
4752 if (g_once_init_enter (&gst_ ## type ## _type)) { \
4754 _info.value_table = & _gst_ ## type ## _value_table; \
4755 _type = g_type_register_fundamental ( \
4756 g_type_fundamental_next (), \
4757 name, &_info, &_finfo, 0); \
4758 g_once_init_leave(&gst_ ## type ## _type, _type); \
4761 return gst_ ## type ## _type; \
4764 static const GTypeValueTable _gst_fourcc_value_table = {
4765 gst_value_init_fourcc,
4767 gst_value_copy_fourcc,
4770 gst_value_collect_fourcc,
4772 gst_value_lcopy_fourcc
4775 FUNC_VALUE_GET_TYPE (fourcc, "GstFourcc");
4777 static const GTypeValueTable _gst_int_range_value_table = {
4778 gst_value_init_int_range,
4780 gst_value_copy_int_range,
4783 gst_value_collect_int_range,
4785 gst_value_lcopy_int_range
4788 FUNC_VALUE_GET_TYPE (int_range, "GstIntRange");
4790 static const GTypeValueTable _gst_int64_range_value_table = {
4791 gst_value_init_int64_range,
4793 gst_value_copy_int64_range,
4796 gst_value_collect_int64_range,
4798 gst_value_lcopy_int64_range
4801 FUNC_VALUE_GET_TYPE (int64_range, "GstInt64Range");
4803 static const GTypeValueTable _gst_double_range_value_table = {
4804 gst_value_init_double_range,
4806 gst_value_copy_double_range,
4809 gst_value_collect_double_range,
4811 gst_value_lcopy_double_range
4814 FUNC_VALUE_GET_TYPE (double_range, "GstDoubleRange");
4816 static const GTypeValueTable _gst_fraction_range_value_table = {
4817 gst_value_init_fraction_range,
4818 gst_value_free_fraction_range,
4819 gst_value_copy_fraction_range,
4822 gst_value_collect_fraction_range,
4824 gst_value_lcopy_fraction_range
4827 FUNC_VALUE_GET_TYPE (fraction_range, "GstFractionRange");
4829 static const GTypeValueTable _gst_value_list_value_table = {
4830 gst_value_init_list_or_array,
4831 gst_value_free_list_or_array,
4832 gst_value_copy_list_or_array,
4833 gst_value_list_or_array_peek_pointer,
4835 gst_value_collect_list_or_array,
4837 gst_value_lcopy_list_or_array
4840 FUNC_VALUE_GET_TYPE (value_list, "GstValueList");
4842 static const GTypeValueTable _gst_value_array_value_table = {
4843 gst_value_init_list_or_array,
4844 gst_value_free_list_or_array,
4845 gst_value_copy_list_or_array,
4846 gst_value_list_or_array_peek_pointer,
4848 gst_value_collect_list_or_array,
4850 gst_value_lcopy_list_or_array
4853 FUNC_VALUE_GET_TYPE (value_array, "GstValueArray");
4855 static const GTypeValueTable _gst_fraction_value_table = {
4856 gst_value_init_fraction,
4858 gst_value_copy_fraction,
4861 gst_value_collect_fraction,
4863 gst_value_lcopy_fraction
4866 FUNC_VALUE_GET_TYPE (fraction, "GstFraction");
4870 gst_date_get_type (void)
4872 static GType gst_date_type = 0;
4874 if (G_UNLIKELY (gst_date_type == 0)) {
4875 /* FIXME 0.11: we require GLib 2.8 already
4876 * Not using G_TYPE_DATE here on purpose, even if we could
4877 * if GLIB_CHECK_VERSION(2,8,0) was true: we don't want the
4878 * serialised strings to have different type strings depending
4879 * on what version is used, so FIXME when we require GLib-2.8 */
4880 gst_date_type = g_boxed_type_register_static ("GstDate",
4881 (GBoxedCopyFunc) gst_date_copy, (GBoxedFreeFunc) g_date_free);
4884 return gst_date_type;
4888 gst_date_time_get_type (void)
4890 static GType gst_date_time_type = 0;
4892 if (G_UNLIKELY (gst_date_time_type == 0)) {
4893 gst_date_time_type = g_boxed_type_register_static ("GstDateTime",
4894 (GBoxedCopyFunc) gst_date_time_ref,
4895 (GBoxedFreeFunc) gst_date_time_unref);
4898 return gst_date_time_type;
4903 _gst_value_initialize (void)
4905 gst_value_table = g_array_new (FALSE, FALSE, sizeof (GstValueTable));
4906 gst_value_hash = g_hash_table_new (NULL, NULL);
4907 gst_value_union_funcs = g_array_new (FALSE, FALSE,
4908 sizeof (GstValueUnionInfo));
4909 gst_value_intersect_funcs = g_array_new (FALSE, FALSE,
4910 sizeof (GstValueIntersectInfo));
4911 gst_value_subtract_funcs = g_array_new (FALSE, FALSE,
4912 sizeof (GstValueSubtractInfo));
4915 static GstValueTable gst_value = {
4917 gst_value_compare_fourcc,
4918 gst_value_serialize_fourcc,
4919 gst_value_deserialize_fourcc,
4922 gst_value.type = gst_fourcc_get_type ();
4923 gst_value_register (&gst_value);
4927 static GstValueTable gst_value = {
4929 gst_value_compare_int_range,
4930 gst_value_serialize_int_range,
4931 gst_value_deserialize_int_range,
4934 gst_value.type = gst_int_range_get_type ();
4935 gst_value_register (&gst_value);
4939 static GstValueTable gst_value = {
4941 gst_value_compare_int64_range,
4942 gst_value_serialize_int64_range,
4943 gst_value_deserialize_int64_range,
4946 gst_value.type = gst_int64_range_get_type ();
4947 gst_value_register (&gst_value);
4951 static GstValueTable gst_value = {
4953 gst_value_compare_double_range,
4954 gst_value_serialize_double_range,
4955 gst_value_deserialize_double_range,
4958 gst_value.type = gst_double_range_get_type ();
4959 gst_value_register (&gst_value);
4963 static GstValueTable gst_value = {
4965 gst_value_compare_fraction_range,
4966 gst_value_serialize_fraction_range,
4967 gst_value_deserialize_fraction_range,
4970 gst_value.type = gst_fraction_range_get_type ();
4971 gst_value_register (&gst_value);
4975 static GstValueTable gst_value = {
4977 gst_value_compare_list,
4978 gst_value_serialize_list,
4979 gst_value_deserialize_list,
4982 gst_value.type = gst_value_list_get_type ();
4983 gst_value_register (&gst_value);
4987 static GstValueTable gst_value = {
4989 gst_value_compare_array,
4990 gst_value_serialize_array,
4991 gst_value_deserialize_array,
4994 gst_value.type = gst_value_array_get_type ();
4995 gst_value_register (&gst_value);
5000 static const GTypeValueTable value_table = {
5001 gst_value_init_buffer,
5003 gst_value_copy_buffer,
5006 NULL, /*gst_value_collect_buffer, */
5008 NULL /*gst_value_lcopy_buffer */
5011 static GstValueTable gst_value = {
5013 gst_value_compare_buffer,
5014 gst_value_serialize_buffer,
5015 gst_value_deserialize_buffer,
5018 gst_value.type = GST_TYPE_BUFFER;
5019 gst_value_register (&gst_value);
5022 static GstValueTable gst_value = {
5024 gst_value_compare_fraction,
5025 gst_value_serialize_fraction,
5026 gst_value_deserialize_fraction,
5029 gst_value.type = gst_fraction_get_type ();
5030 gst_value_register (&gst_value);
5033 static GstValueTable gst_value = {
5036 gst_value_serialize_caps,
5037 gst_value_deserialize_caps,
5040 gst_value.type = GST_TYPE_CAPS;
5041 gst_value_register (&gst_value);
5044 static GstValueTable gst_value = {
5047 gst_value_serialize_structure,
5048 gst_value_deserialize_structure,
5051 gst_value.type = GST_TYPE_STRUCTURE;
5052 gst_value_register (&gst_value);
5055 static GstValueTable gst_value = {
5057 gst_value_compare_date,
5058 gst_value_serialize_date,
5059 gst_value_deserialize_date,
5062 gst_value.type = gst_date_get_type ();
5063 gst_value_register (&gst_value);
5066 static GstValueTable gst_value = {
5068 gst_value_compare_date_time,
5069 gst_value_serialize_date_time,
5070 gst_value_deserialize_date_time,
5073 gst_value.type = gst_date_time_get_type ();
5074 gst_value_register (&gst_value);
5077 REGISTER_SERIALIZATION (G_TYPE_DOUBLE, double);
5078 REGISTER_SERIALIZATION (G_TYPE_FLOAT, float);
5080 REGISTER_SERIALIZATION (G_TYPE_STRING, string);
5081 REGISTER_SERIALIZATION (G_TYPE_BOOLEAN, boolean);
5082 REGISTER_SERIALIZATION (G_TYPE_ENUM, enum);
5084 REGISTER_SERIALIZATION (G_TYPE_FLAGS, flags);
5086 REGISTER_SERIALIZATION (G_TYPE_INT, int);
5088 REGISTER_SERIALIZATION (G_TYPE_INT64, int64);
5089 REGISTER_SERIALIZATION (G_TYPE_LONG, long);
5091 REGISTER_SERIALIZATION (G_TYPE_UINT, uint);
5092 REGISTER_SERIALIZATION (G_TYPE_UINT64, uint64);
5093 REGISTER_SERIALIZATION (G_TYPE_ULONG, ulong);
5095 REGISTER_SERIALIZATION (G_TYPE_UCHAR, uchar);
5097 g_value_register_transform_func (GST_TYPE_FOURCC, G_TYPE_STRING,
5098 gst_value_transform_fourcc_string);
5099 g_value_register_transform_func (GST_TYPE_INT_RANGE, G_TYPE_STRING,
5100 gst_value_transform_int_range_string);
5101 g_value_register_transform_func (GST_TYPE_INT64_RANGE, G_TYPE_STRING,
5102 gst_value_transform_int64_range_string);
5103 g_value_register_transform_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_STRING,
5104 gst_value_transform_double_range_string);
5105 g_value_register_transform_func (GST_TYPE_FRACTION_RANGE, G_TYPE_STRING,
5106 gst_value_transform_fraction_range_string);
5107 g_value_register_transform_func (GST_TYPE_LIST, G_TYPE_STRING,
5108 gst_value_transform_list_string);
5109 g_value_register_transform_func (GST_TYPE_ARRAY, G_TYPE_STRING,
5110 gst_value_transform_array_string);
5111 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_STRING,
5112 gst_value_transform_fraction_string);
5113 g_value_register_transform_func (G_TYPE_STRING, GST_TYPE_FRACTION,
5114 gst_value_transform_string_fraction);
5115 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_DOUBLE,
5116 gst_value_transform_fraction_double);
5117 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_FLOAT,
5118 gst_value_transform_fraction_float);
5119 g_value_register_transform_func (G_TYPE_DOUBLE, GST_TYPE_FRACTION,
5120 gst_value_transform_double_fraction);
5121 g_value_register_transform_func (G_TYPE_FLOAT, GST_TYPE_FRACTION,
5122 gst_value_transform_float_fraction);
5123 g_value_register_transform_func (GST_TYPE_DATE, G_TYPE_STRING,
5124 gst_value_transform_date_string);
5125 g_value_register_transform_func (G_TYPE_STRING, GST_TYPE_DATE,
5126 gst_value_transform_string_date);
5127 g_value_register_transform_func (GST_TYPE_OBJECT, G_TYPE_STRING,
5128 gst_value_transform_object_string);
5130 gst_value_register_intersect_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5131 gst_value_intersect_int_int_range);
5132 gst_value_register_intersect_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5133 gst_value_intersect_int_range_int_range);
5134 gst_value_register_intersect_func (G_TYPE_INT64, GST_TYPE_INT64_RANGE,
5135 gst_value_intersect_int64_int64_range);
5136 gst_value_register_intersect_func (GST_TYPE_INT64_RANGE, GST_TYPE_INT64_RANGE,
5137 gst_value_intersect_int64_range_int64_range);
5138 gst_value_register_intersect_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
5139 gst_value_intersect_double_double_range);
5140 gst_value_register_intersect_func (GST_TYPE_DOUBLE_RANGE,
5141 GST_TYPE_DOUBLE_RANGE, gst_value_intersect_double_range_double_range);
5142 gst_value_register_intersect_func (GST_TYPE_ARRAY,
5143 GST_TYPE_ARRAY, gst_value_intersect_array);
5144 gst_value_register_intersect_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5145 gst_value_intersect_fraction_fraction_range);
5146 gst_value_register_intersect_func (GST_TYPE_FRACTION_RANGE,
5147 GST_TYPE_FRACTION_RANGE,
5148 gst_value_intersect_fraction_range_fraction_range);
5150 gst_value_register_subtract_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5151 gst_value_subtract_int_int_range);
5152 gst_value_register_subtract_func (GST_TYPE_INT_RANGE, G_TYPE_INT,
5153 gst_value_subtract_int_range_int);
5154 gst_value_register_subtract_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5155 gst_value_subtract_int_range_int_range);
5156 gst_value_register_subtract_func (G_TYPE_INT64, GST_TYPE_INT64_RANGE,
5157 gst_value_subtract_int64_int64_range);
5158 gst_value_register_subtract_func (GST_TYPE_INT64_RANGE, G_TYPE_INT64,
5159 gst_value_subtract_int64_range_int64);
5160 gst_value_register_subtract_func (GST_TYPE_INT64_RANGE, GST_TYPE_INT64_RANGE,
5161 gst_value_subtract_int64_range_int64_range);
5162 gst_value_register_subtract_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
5163 gst_value_subtract_double_double_range);
5164 gst_value_register_subtract_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_DOUBLE,
5165 gst_value_subtract_double_range_double);
5166 gst_value_register_subtract_func (GST_TYPE_DOUBLE_RANGE,
5167 GST_TYPE_DOUBLE_RANGE, gst_value_subtract_double_range_double_range);
5169 gst_value_register_subtract_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5170 gst_value_subtract_fraction_fraction_range);
5171 gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE, GST_TYPE_FRACTION,
5172 gst_value_subtract_fraction_range_fraction);
5173 gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE,
5174 GST_TYPE_FRACTION_RANGE,
5175 gst_value_subtract_fraction_range_fraction_range);
5177 /* see bug #317246, #64994, #65041 */
5179 volatile GType date_type = G_TYPE_DATE;
5181 g_type_name (date_type);
5184 gst_value_register_union_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5185 gst_value_union_int_int_range);
5186 gst_value_register_union_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5187 gst_value_union_int_range_int_range);
5190 /* Implement these if needed */
5191 gst_value_register_union_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5192 gst_value_union_fraction_fraction_range);
5193 gst_value_register_union_func (GST_TYPE_FRACTION_RANGE,
5194 GST_TYPE_FRACTION_RANGE, gst_value_union_fraction_range_fraction_range);