1 /* GStreamer
2 * Copyright (C) <2003> David A. Schleef <ds@schleef.org>
3 *
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.
8 *
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.
13 *
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.
18 */
20 /**
21 * SECTION:gstvalue
22 * @short_description: GValue implementations specific
23 * to GStreamer
24 *
25 * GValue implementations specific to GStreamer.
26 *
27 * Note that operations on the same #GValue from multiple threads may lead to
28 * undefined behaviour.
29 *
30 * Last reviewed on 2008-03-11 (0.10.18)
31 */
33 #ifdef HAVE_CONFIG_H
34 #include "config.h"
35 #endif
36 #include <math.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <ctype.h>
42 #include "gst_private.h"
43 #include "glib-compat-private.h"
44 #include <gst/gst.h>
45 #include <gobject/gvaluecollector.h>
46 #include "gstutils.h"
48 typedef struct _GstValueUnionInfo GstValueUnionInfo;
49 struct _GstValueUnionInfo
50 {
51 GType type1;
52 GType type2;
53 GstValueUnionFunc func;
54 };
56 typedef struct _GstValueIntersectInfo GstValueIntersectInfo;
57 struct _GstValueIntersectInfo
58 {
59 GType type1;
60 GType type2;
61 GstValueIntersectFunc func;
62 };
64 typedef struct _GstValueSubtractInfo GstValueSubtractInfo;
65 struct _GstValueSubtractInfo
66 {
67 GType minuend;
68 GType subtrahend;
69 GstValueSubtractFunc func;
70 };
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)
100 {
101 if (G_LIKELY (G_TYPE_IS_FUNDAMENTAL (type)))
102 return gst_value_tables_fundamental[FUNDAMENTAL_TYPE_ID (type)];
103 else
104 return g_hash_table_lookup (gst_value_hash, (gpointer) type);
105 }
107 static void
108 gst_value_hash_add_type (GType type, const GstValueTable * table)
109 {
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);
114 }
116 /********
117 * list *
118 ********/
120 /* two helper functions to serialize/stringify any type of list
121 * regular lists are done with { }, arrays with < >
122 */
123 static gchar *
124 gst_value_serialize_any_list (const GValue * value, const gchar * begin,
125 const gchar * end)
126 {
127 guint i;
128 GArray *array = value->data[0].v_pointer;
129 GString *s;
130 GValue *v;
131 gchar *s_val;
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);
141 g_free (s_val);
142 if (i < alen - 1) {
143 g_string_append_len (s, ", ", 2);
144 }
145 }
146 g_string_append (s, end);
147 return g_string_free (s, FALSE);
148 }
150 static void
151 gst_value_transform_any_list_string (const GValue * src_value,
152 GValue * dest_value, const gchar * begin, const gchar * end)
153 {
154 GValue *list_value;
155 GArray *array;
156 GString *s;
157 guint i;
158 gchar *list_s;
159 guint alen;
161 array = src_value->data[0].v_pointer;
162 alen = array->len;
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);
170 if (i != 0) {
171 g_string_append_len (s, ", ", 2);
172 }
173 list_s = g_strdup_value_contents (list_value);
174 g_string_append (s, list_s);
175 g_free (list_s);
176 }
177 g_string_append (s, end);
179 dest_value->data[0].v_pointer = g_string_free (s, FALSE);
180 }
182 /*
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).
186 */
187 static gboolean
188 gst_type_is_fixed (GType type)
189 {
190 /* the basic int, string, double types */
191 if (type <= G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
192 return TRUE;
193 }
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) {
198 return FALSE;
199 }
200 /* other (boxed) types that are fixed */
201 if (type == GST_TYPE_BUFFER) {
202 return TRUE;
203 }
204 /* heavy checks */
205 if (G_TYPE_IS_FUNDAMENTAL (type) || G_TYPE_FUNDAMENTAL (type) <=
206 G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
207 return TRUE;
208 }
210 return FALSE;
211 }
213 /* GValue functions usable for both regular lists and arrays */
214 static void
215 gst_value_init_list_or_array (GValue * value)
216 {
217 value->data[0].v_pointer = g_array_new (FALSE, TRUE, sizeof (GValue));
218 }
220 static GArray *
221 copy_garray_of_gstvalue (const GArray * src)
222 {
223 GArray *dest;
224 guint i, len;
226 len = src->len;
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));
232 }
234 return dest;
235 }
237 static void
238 gst_value_copy_list_or_array (const GValue * src_value, GValue * dest_value)
239 {
240 dest_value->data[0].v_pointer =
241 copy_garray_of_gstvalue ((GArray *) src_value->data[0].v_pointer);
242 }
244 static void
245 gst_value_free_list_or_array (GValue * value)
246 {
247 guint i, len;
248 GArray *src = (GArray *) value->data[0].v_pointer;
249 len = src->len;
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));
254 }
255 g_array_free (src, TRUE);
256 }
257 }
259 static gpointer
260 gst_value_list_or_array_peek_pointer (const GValue * value)
261 {
262 return value->data[0].v_pointer;
263 }
265 static gchar *
266 gst_value_collect_list_or_array (GValue * value, guint n_collect_values,
267 GTypeCValue * collect_values, guint collect_flags)
268 {
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;
272 } else {
273 value->data[0].v_pointer =
274 copy_garray_of_gstvalue ((GArray *) collect_values[0].v_pointer);
275 }
276 return NULL;
277 }
279 static gchar *
280 gst_value_lcopy_list_or_array (const GValue * value, guint n_collect_values,
281 GTypeCValue * collect_values, guint collect_flags)
282 {
283 GArray **dest = collect_values[0].v_pointer;
285 if (!dest)
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;
293 } else {
294 *dest = copy_garray_of_gstvalue ((GArray *) value->data[0].v_pointer);
295 }
296 return NULL;
297 }
299 /**
300 * gst_value_list_append_value:
301 * @value: a #GValue of type #GST_TYPE_LIST
302 * @append_value: the value to append
303 *
304 * Appends @append_value to the GstValueList in @value.
305 */
306 void
307 gst_value_list_append_value (GValue * value, const GValue * append_value)
308 {
309 GValue val = { 0, };
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);
316 }
318 /**
319 * gst_value_list_prepend_value:
320 * @value: a #GValue of type #GST_TYPE_LIST
321 * @prepend_value: the value to prepend
322 *
323 * Prepends @prepend_value to the GstValueList in @value.
324 */
325 void
326 gst_value_list_prepend_value (GValue * value, const GValue * prepend_value)
327 {
328 GValue val = { 0, };
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);
335 }
337 /**
338 * gst_value_list_concat:
339 * @dest: (out caller-allocates): an uninitialized #GValue to take the result
340 * @value1: a #GValue
341 * @value2: a #GValue
342 *
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.
346 */
347 void
348 gst_value_list_concat (GValue * dest, const GValue * value1,
349 const GValue * value2)
350 {
351 guint i, value1_length, value2_length;
352 GArray *array;
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));
359 value1_length =
360 (GST_VALUE_HOLDS_LIST (value1) ? VALUE_LIST_SIZE (value1) : 1);
361 value2_length =
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));
371 }
372 } else {
373 gst_value_init_and_copy (&g_array_index (array, GValue, 0), value1);
374 }
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));
380 }
381 } else {
382 gst_value_init_and_copy (&g_array_index (array, GValue, value1_length),
383 value2);
384 }
385 }
387 /**
388 * gst_value_list_merge:
389 * @dest: (out caller-allocates): an uninitialized #GValue to take the result
390 * @value1: a #GValue
391 * @value2: a #GValue
392 *
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.
395 *
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
398 * were equal).
399 *
400 * Since: 0.10.32
401 */
402 void
403 gst_value_list_merge (GValue * dest, const GValue * value1,
404 const GValue * value2)
405 {
406 guint i, j, k, value1_length, value2_length, skipped;
407 const GValue *src;
408 gboolean skip;
409 GArray *array;
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));
416 value1_length =
417 (GST_VALUE_HOLDS_LIST (value1) ? VALUE_LIST_SIZE (value1) : 1);
418 value2_length =
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));
428 }
429 } else {
430 gst_value_init_and_copy (&g_array_index (array, GValue, 0), value1);
431 }
433 j = value1_length;
434 skipped = 0;
435 if (GST_VALUE_HOLDS_LIST (value2)) {
436 for (i = 0; i < value2_length; i++) {
437 skip = FALSE;
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) {
442 skip = TRUE;
443 skipped++;
444 break;
445 }
446 }
447 if (!skip) {
448 gst_value_init_and_copy (&g_array_index (array, GValue, j), src);
449 j++;
450 }
451 }
452 } else {
453 skip = FALSE;
454 for (k = 0; k < value1_length; k++) {
455 if (gst_value_compare (&g_array_index (array, GValue, k),
456 value2) == GST_VALUE_EQUAL) {
457 skip = TRUE;
458 skipped++;
459 break;
460 }
461 }
462 if (!skip) {
463 gst_value_init_and_copy (&g_array_index (array, GValue, j), value2);
464 }
465 }
466 if (skipped) {
467 guint new_size = value1_length + (value2_length - skipped);
469 if (new_size > 1) {
470 /* shrink list */
471 g_array_set_size (array, new_size);
472 } else {
473 GValue single_dest;
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
480 * work on them */
481 g_array_set_size (array, 0);
482 g_value_unset (dest);
484 /* the single value is our new result */
485 *dest = single_dest;
486 }
487 }
488 }
490 /**
491 * gst_value_list_get_size:
492 * @value: a #GValue of type #GST_TYPE_LIST
493 *
494 * Gets the number of values contained in @value.
495 *
496 * Returns: the number of values
497 */
498 guint
499 gst_value_list_get_size (const GValue * value)
500 {
501 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (value), 0);
503 return ((GArray *) value->data[0].v_pointer)->len;
504 }
506 /**
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
510 *
511 * Gets the value that is a member of the list contained in @value and
512 * has the index @index.
513 *
514 * Returns: (transfer none): the value at the given index
515 */
516 const GValue *
517 gst_value_list_get_value (const GValue * value, guint index)
518 {
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,
523 GValue, index);
524 }
526 /**
527 * gst_value_array_append_value:
528 * @value: a #GValue of type #GST_TYPE_ARRAY
529 * @append_value: the value to append
530 *
531 * Appends @append_value to the GstValueArray in @value.
532 */
533 void
534 gst_value_array_append_value (GValue * value, const GValue * append_value)
535 {
536 GValue val = { 0, };
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);
543 }
545 /**
546 * gst_value_array_prepend_value:
547 * @value: a #GValue of type #GST_TYPE_ARRAY
548 * @prepend_value: the value to prepend
549 *
550 * Prepends @prepend_value to the GstValueArray in @value.
551 */
552 void
553 gst_value_array_prepend_value (GValue * value, const GValue * prepend_value)
554 {
555 GValue val = { 0, };
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);
562 }
564 /**
565 * gst_value_array_get_size:
566 * @value: a #GValue of type #GST_TYPE_ARRAY
567 *
568 * Gets the number of values contained in @value.
569 *
570 * Returns: the number of values
571 */
572 guint
573 gst_value_array_get_size (const GValue * value)
574 {
575 g_return_val_if_fail (GST_VALUE_HOLDS_ARRAY (value), 0);
577 return ((GArray *) value->data[0].v_pointer)->len;
578 }
580 /**
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
584 *
585 * Gets the value that is a member of the array contained in @value and
586 * has the index @index.
587 *
588 * Returns: (transfer none): the value at the given index
589 */
590 const GValue *
591 gst_value_array_get_value (const GValue * value, guint index)
592 {
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,
597 GValue, index);
598 }
600 static void
601 gst_value_transform_list_string (const GValue * src_value, GValue * dest_value)
602 {
603 gst_value_transform_any_list_string (src_value, dest_value, "{ ", " }");
604 }
606 static void
607 gst_value_transform_array_string (const GValue * src_value, GValue * dest_value)
608 {
609 gst_value_transform_any_list_string (src_value, dest_value, "< ", " >");
610 }
612 /* Do an unordered compare of the contents of a list */
613 static gint
614 gst_value_compare_list (const GValue * value1, const GValue * value2)
615 {
616 guint i, j;
617 GArray *array1 = value1->data[0].v_pointer;
618 GArray *array2 = value2->data[0].v_pointer;
619 GValue *v1;
620 GValue *v2;
621 gint len, to_remove;
622 guint8 *removed;
623 GstValueCompareFunc compare;
625 /* get length and do initial length check. */
626 len = array1->len;
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);
633 to_remove = 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 */
642 if (removed[j])
643 continue;
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. */
648 removed[j] = 1;
649 to_remove--;
650 break;
651 }
652 }
653 /* item in array1 and not in array2, UNORDERED */
654 if (j == len)
655 return GST_VALUE_UNORDERED;
656 } else
657 return GST_VALUE_UNORDERED;
658 }
659 /* if not all items were removed, array2 contained something not in array1 */
660 if (to_remove != 0)
661 return GST_VALUE_UNORDERED;
663 /* arrays are equal */
664 return GST_VALUE_EQUAL;
665 }
667 /* Perform an ordered comparison of the contents of an array */
668 static gint
669 gst_value_compare_array (const GValue * value1, const GValue * value2)
670 {
671 guint i;
672 GArray *array1 = value1->data[0].v_pointer;
673 GArray *array2 = value2->data[0].v_pointer;
674 guint len = array1->len;
675 GValue *v1;
676 GValue *v2;
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;
686 }
688 return GST_VALUE_EQUAL;
689 }
691 static gchar *
692 gst_value_serialize_list (const GValue * value)
693 {
694 return gst_value_serialize_any_list (value, "{ ", " }");
695 }
697 static gboolean
698 gst_value_deserialize_list (GValue * dest, const gchar * s)
699 {
700 g_warning ("gst_value_deserialize_list: unimplemented");
701 return FALSE;
702 }
704 static gchar *
705 gst_value_serialize_array (const GValue * value)
706 {
707 return gst_value_serialize_any_list (value, "< ", " >");
708 }
710 static gboolean
711 gst_value_deserialize_array (GValue * dest, const gchar * s)
712 {
713 g_warning ("gst_value_deserialize_array: unimplemented");
714 return FALSE;
715 }
717 /**********
718 * fourcc *
719 **********/
721 static void
722 gst_value_init_fourcc (GValue * value)
723 {
724 value->data[0].v_int = 0;
725 }
727 static void
728 gst_value_copy_fourcc (const GValue * src_value, GValue * dest_value)
729 {
730 dest_value->data[0].v_int = src_value->data[0].v_int;
731 }
733 static gchar *
734 gst_value_collect_fourcc (GValue * value, guint n_collect_values,
735 GTypeCValue * collect_values, guint collect_flags)
736 {
737 value->data[0].v_int = collect_values[0].v_int;
739 return NULL;
740 }
742 static gchar *
743 gst_value_lcopy_fourcc (const GValue * value, guint n_collect_values,
744 GTypeCValue * collect_values, guint collect_flags)
745 {
746 guint32 *fourcc_p = collect_values[0].v_pointer;
748 if (!fourcc_p)
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;
754 return NULL;
755 }
757 /**
758 * gst_value_set_fourcc:
759 * @value: a GValue initialized to #GST_TYPE_FOURCC
760 * @fourcc: the #guint32 fourcc to set
761 *
762 * Sets @value to @fourcc.
763 */
764 void
765 gst_value_set_fourcc (GValue * value, guint32 fourcc)
766 {
767 g_return_if_fail (GST_VALUE_HOLDS_FOURCC (value));
769 value->data[0].v_int = fourcc;
770 }
772 /**
773 * gst_value_get_fourcc:
774 * @value: a GValue initialized to #GST_TYPE_FOURCC
775 *
776 * Gets the #guint32 fourcc contained in @value.
777 *
778 * Returns: the #guint32 fourcc contained in @value.
779 */
780 guint32
781 gst_value_get_fourcc (const GValue * value)
782 {
783 g_return_val_if_fail (GST_VALUE_HOLDS_FOURCC (value), 0);
785 return value->data[0].v_int;
786 }
788 static void
789 gst_value_transform_fourcc_string (const GValue * src_value,
790 GValue * dest_value)
791 {
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));
806 } else {
807 dest_value->data[0].v_pointer = g_strdup_printf ("0x%08x", fourcc);
808 }
809 }
811 static gint
812 gst_value_compare_fourcc (const GValue * value1, const GValue * value2)
813 {
814 if (value2->data[0].v_int == value1->data[0].v_int)
815 return GST_VALUE_EQUAL;
816 return GST_VALUE_UNORDERED;
817 }
819 static gchar *
820 gst_value_serialize_fourcc (const GValue * value)
821 {
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));
835 } else {
836 return g_strdup_printf ("0x%08x", fourcc);
837 }
838 }
840 static gboolean
841 gst_value_deserialize_fourcc (GValue * dest, const gchar * s)
842 {
843 gboolean ret = FALSE;
844 guint32 fourcc = 0;
845 gchar *end;
846 gint l = strlen (s);
848 if (l == 4) {
849 fourcc = GST_MAKE_FOURCC (s[0], s[1], s[2], s[3]);
850 ret = TRUE;
851 } else if (l == 3) {
852 fourcc = GST_MAKE_FOURCC (s[0], s[1], s[2], ' ');
853 ret = TRUE;
854 } else if (l == 2) {
855 fourcc = GST_MAKE_FOURCC (s[0], s[1], ' ', ' ');
856 ret = TRUE;
857 } else if (l == 1) {
858 fourcc = GST_MAKE_FOURCC (s[0], ' ', ' ', ' ');
859 ret = TRUE;
860 } else if (g_ascii_isdigit (*s)) {
861 fourcc = strtoul (s, &end, 0);
862 if (*end == 0) {
863 ret = TRUE;
864 }
865 }
866 gst_value_set_fourcc (dest, fourcc);
868 return ret;
869 }
871 /*************
872 * int range *
873 *************/
875 static void
876 gst_value_init_int_range (GValue * value)
877 {
878 value->data[0].v_int = 0;
879 value->data[1].v_int = 0;
880 }
882 static void
883 gst_value_copy_int_range (const GValue * src_value, GValue * dest_value)
884 {
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;
887 }
889 static gchar *
890 gst_value_collect_int_range (GValue * value, guint n_collect_values,
891 GTypeCValue * collect_values, guint collect_flags)
892 {
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;
903 return NULL;
904 }
906 static gchar *
907 gst_value_lcopy_int_range (const GValue * value, guint n_collect_values,
908 GTypeCValue * collect_values, guint collect_flags)
909 {
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));
916 if (!int_range_end)
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;
923 return NULL;
924 }
926 /**
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
931 *
932 * Sets @value to the range specified by @start and @end.
933 */
934 void
935 gst_value_set_int_range (GValue * value, gint start, gint end)
936 {
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;
942 }
944 /**
945 * gst_value_get_int_range_min:
946 * @value: a GValue initialized to GST_TYPE_INT_RANGE
947 *
948 * Gets the minimum of the range specified by @value.
949 *
950 * Returns: the minimum of the range
951 */
952 gint
953 gst_value_get_int_range_min (const GValue * value)
954 {
955 g_return_val_if_fail (GST_VALUE_HOLDS_INT_RANGE (value), 0);
957 return value->data[0].v_int;
958 }
960 /**
961 * gst_value_get_int_range_max:
962 * @value: a GValue initialized to GST_TYPE_INT_RANGE
963 *
964 * Gets the maximum of the range specified by @value.
965 *
966 * Returns: the maxumum of the range
967 */
968 gint
969 gst_value_get_int_range_max (const GValue * value)
970 {
971 g_return_val_if_fail (GST_VALUE_HOLDS_INT_RANGE (value), 0);
973 return value->data[1].v_int;
974 }
976 static void
977 gst_value_transform_int_range_string (const GValue * src_value,
978 GValue * dest_value)
979 {
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);
982 }
984 static gint
985 gst_value_compare_int_range (const GValue * value1, const GValue * value2)
986 {
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;
991 }
993 static gchar *
994 gst_value_serialize_int_range (const GValue * value)
995 {
996 return g_strdup_printf ("[ %d, %d ]", value->data[0].v_int,
997 value->data[1].v_int);
998 }
1000 static gboolean
1001 gst_value_deserialize_int_range (GValue * dest, const gchar * s)
1002 {
1003 g_warning ("unimplemented");
1004 return FALSE;
1005 }
1007 /***************
1008 * int64 range *
1009 ***************/
1011 static void
1012 gst_value_init_int64_range (GValue * value)
1013 {
1014 value->data[0].v_int64 = 0;
1015 value->data[1].v_int64 = 0;
1016 }
1018 static void
1019 gst_value_copy_int64_range (const GValue * src_value, GValue * dest_value)
1020 {
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;
1023 }
1025 static gchar *
1026 gst_value_collect_int64_range (GValue * value, guint n_collect_values,
1027 GTypeCValue * collect_values, guint collect_flags)
1028 {
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;
1039 return NULL;
1040 }
1042 static gchar *
1043 gst_value_lcopy_int64_range (const GValue * value, guint n_collect_values,
1044 GTypeCValue * collect_values, guint collect_flags)
1045 {
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));
1052 if (!int_range_end)
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;
1059 return NULL;
1060 }
1062 /**
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
1067 *
1068 * Sets @value to the range specified by @start and @end.
1069 *
1070 * Since: 0.10.31
1071 */
1072 void
1073 gst_value_set_int64_range (GValue * value, gint64 start, gint64 end)
1074 {
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;
1080 }
1082 /**
1083 * gst_value_get_int64_range_min:
1084 * @value: a GValue initialized to GST_TYPE_INT64_RANGE
1085 *
1086 * Gets the minimum of the range specified by @value.
1087 *
1088 * Returns: the minimum of the range
1089 *
1090 * Since: 0.10.31
1091 */
1092 gint64
1093 gst_value_get_int64_range_min (const GValue * value)
1094 {
1095 g_return_val_if_fail (GST_VALUE_HOLDS_INT64_RANGE (value), 0);
1097 return value->data[0].v_int64;
1098 }
1100 /**
1101 * gst_value_get_int64_range_max:
1102 * @value: a GValue initialized to GST_TYPE_INT64_RANGE
1103 *
1104 * Gets the maximum of the range specified by @value.
1105 *
1106 * Returns: the maxumum of the range
1107 *
1108 * Since: 0.10.31
1109 */
1110 gint64
1111 gst_value_get_int64_range_max (const GValue * value)
1112 {
1113 g_return_val_if_fail (GST_VALUE_HOLDS_INT64_RANGE (value), 0);
1115 return value->data[1].v_int64;
1116 }
1118 static void
1119 gst_value_transform_int64_range_string (const GValue * src_value,
1120 GValue * dest_value)
1121 {
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);
1125 }
1127 static gint
1128 gst_value_compare_int64_range (const GValue * value1, const GValue * value2)
1129 {
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;
1134 }
1136 static gchar *
1137 gst_value_serialize_int64_range (const GValue * value)
1138 {
1139 return g_strdup_printf ("[ %" G_GINT64_FORMAT ", %" G_GINT64_FORMAT " ]",
1140 value->data[0].v_int64, value->data[1].v_int64);
1141 }
1143 static gboolean
1144 gst_value_deserialize_int64_range (GValue * dest, const gchar * s)
1145 {
1146 g_warning ("unimplemented");
1147 return FALSE;
1148 }
1150 /****************
1151 * double range *
1152 ****************/
1154 static void
1155 gst_value_init_double_range (GValue * value)
1156 {
1157 value->data[0].v_double = 0;
1158 value->data[1].v_double = 0;
1159 }
1161 static void
1162 gst_value_copy_double_range (const GValue * src_value, GValue * dest_value)
1163 {
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;
1166 }
1168 static gchar *
1169 gst_value_collect_double_range (GValue * value, guint n_collect_values,
1170 GTypeCValue * collect_values, guint collect_flags)
1171 {
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;
1182 return NULL;
1183 }
1185 static gchar *
1186 gst_value_lcopy_double_range (const GValue * value, guint n_collect_values,
1187 GTypeCValue * collect_values, guint collect_flags)
1188 {
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;
1202 return NULL;
1203 }
1205 /**
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
1210 *
1211 * Sets @value to the range specified by @start and @end.
1212 */
1213 void
1214 gst_value_set_double_range (GValue * value, gdouble start, gdouble end)
1215 {
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;
1221 }
1223 /**
1224 * gst_value_get_double_range_min:
1225 * @value: a GValue initialized to GST_TYPE_DOUBLE_RANGE
1226 *
1227 * Gets the minimum of the range specified by @value.
1228 *
1229 * Returns: the minimum of the range
1230 */
1231 gdouble
1232 gst_value_get_double_range_min (const GValue * value)
1233 {
1234 g_return_val_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value), 0);
1236 return value->data[0].v_double;
1237 }
1239 /**
1240 * gst_value_get_double_range_max:
1241 * @value: a GValue initialized to GST_TYPE_DOUBLE_RANGE
1242 *
1243 * Gets the maximum of the range specified by @value.
1244 *
1245 * Returns: the maxumum of the range
1246 */
1247 gdouble
1248 gst_value_get_double_range_max (const GValue * value)
1249 {
1250 g_return_val_if_fail (GST_VALUE_HOLDS_DOUBLE_RANGE (value), 0);
1252 return value->data[1].v_double;
1253 }
1255 static void
1256 gst_value_transform_double_range_string (const GValue * src_value,
1257 GValue * dest_value)
1258 {
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));
1266 }
1268 static gint
1269 gst_value_compare_double_range (const GValue * value1, const GValue * value2)
1270 {
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;
1275 }
1277 static gchar *
1278 gst_value_serialize_double_range (const GValue * value)
1279 {
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);
1286 }
1288 static gboolean
1289 gst_value_deserialize_double_range (GValue * dest, const gchar * s)
1290 {
1291 g_warning ("unimplemented");
1292 return FALSE;
1293 }
1295 /****************
1296 * fraction range *
1297 ****************/
1299 static void
1300 gst_value_init_fraction_range (GValue * value)
1301 {
1302 GValue *vals;
1303 GType ftype;
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);
1310 }
1312 static void
1313 gst_value_free_fraction_range (GValue * value)
1314 {
1315 GValue *vals = (GValue *) value->data[0].v_pointer;
1317 if (vals != NULL) {
1318 g_value_unset (&vals[0]);
1319 g_value_unset (&vals[1]);
1320 g_slice_free1 (2 * sizeof (GValue), vals);
1321 value->data[0].v_pointer = NULL;
1322 }
1323 }
1325 static void
1326 gst_value_copy_fraction_range (const GValue * src_value, GValue * dest_value)
1327 {
1328 GValue *vals = (GValue *) dest_value->data[0].v_pointer;
1329 GValue *src_vals = (GValue *) src_value->data[0].v_pointer;
1331 if (vals == NULL) {
1332 gst_value_init_fraction_range (dest_value);
1333 vals = dest_value->data[0].v_pointer;
1334 }
1335 if (src_vals != NULL) {
1336 g_value_copy (&src_vals[0], &vals[0]);
1337 g_value_copy (&src_vals[1], &vals[1]);
1338 }
1339 }
1341 static gchar *
1342 gst_value_collect_fraction_range (GValue * value, guint n_collect_values,
1343 GTypeCValue * collect_values, guint collect_flags)
1344 {
1345 GValue *vals = (GValue *) value->data[0].v_pointer;
1347 if (n_collect_values != 4)
1348 return g_strdup_printf ("not enough value locations for `%s' passed",
1349 G_VALUE_TYPE_NAME (value));
1350 if (collect_values[1].v_int == 0)
1351 return g_strdup_printf ("passed '0' as first denominator for `%s'",
1352 G_VALUE_TYPE_NAME (value));
1353 if (collect_values[3].v_int == 0)
1354 return g_strdup_printf ("passed '0' as second denominator for `%s'",
1355 G_VALUE_TYPE_NAME (value));
1356 if (gst_util_fraction_compare (collect_values[0].v_int,
1357 collect_values[1].v_int, collect_values[2].v_int,
1358 collect_values[3].v_int) >= 0)
1359 return g_strdup_printf ("range start is not smaller than end for `%s'",
1360 G_VALUE_TYPE_NAME (value));
1362 if (vals == NULL) {
1363 gst_value_init_fraction_range (value);
1364 vals = value->data[0].v_pointer;
1365 }
1367 gst_value_set_fraction (&vals[0], collect_values[0].v_int,
1368 collect_values[1].v_int);
1369 gst_value_set_fraction (&vals[1], collect_values[2].v_int,
1370 collect_values[3].v_int);
1372 return NULL;
1373 }
1375 static gchar *
1376 gst_value_lcopy_fraction_range (const GValue * value, guint n_collect_values,
1377 GTypeCValue * collect_values, guint collect_flags)
1378 {
1379 gint i;
1380 gint *dest_values[4];
1381 GValue *vals = (GValue *) value->data[0].v_pointer;
1383 if (G_UNLIKELY (n_collect_values != 4))
1384 return g_strdup_printf ("not enough value locations for `%s' passed",
1385 G_VALUE_TYPE_NAME (value));
1387 for (i = 0; i < 4; i++) {
1388 if (G_UNLIKELY (collect_values[i].v_pointer == NULL)) {
1389 return g_strdup_printf ("value location for `%s' passed as NULL",
1390 G_VALUE_TYPE_NAME (value));
1391 }
1392 dest_values[i] = collect_values[i].v_pointer;
1393 }
1395 if (G_UNLIKELY (vals == NULL)) {
1396 return g_strdup_printf ("Uninitialised `%s' passed",
1397 G_VALUE_TYPE_NAME (value));
1398 }
1400 dest_values[0][0] = gst_value_get_fraction_numerator (&vals[0]);
1401 dest_values[1][0] = gst_value_get_fraction_denominator (&vals[0]);
1402 dest_values[2][0] = gst_value_get_fraction_numerator (&vals[1]);
1403 dest_values[3][0] = gst_value_get_fraction_denominator (&vals[1]);
1404 return NULL;
1405 }
1407 /**
1408 * gst_value_set_fraction_range:
1409 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1410 * @start: the start of the range (a GST_TYPE_FRACTION GValue)
1411 * @end: the end of the range (a GST_TYPE_FRACTION GValue)
1412 *
1413 * Sets @value to the range specified by @start and @end.
1414 */
1415 void
1416 gst_value_set_fraction_range (GValue * value, const GValue * start,
1417 const GValue * end)
1418 {
1419 GValue *vals;
1421 g_return_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value));
1422 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (start));
1423 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (end));
1424 g_return_if_fail (gst_util_fraction_compare (start->data[0].v_int,
1425 start->data[1].v_int, end->data[0].v_int, end->data[1].v_int) < 0);
1427 vals = (GValue *) value->data[0].v_pointer;
1428 if (vals == NULL) {
1429 gst_value_init_fraction_range (value);
1430 vals = value->data[0].v_pointer;
1431 }
1432 g_value_copy (start, &vals[0]);
1433 g_value_copy (end, &vals[1]);
1434 }
1436 /**
1437 * gst_value_set_fraction_range_full:
1438 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1439 * @numerator_start: the numerator start of the range
1440 * @denominator_start: the denominator start of the range
1441 * @numerator_end: the numerator end of the range
1442 * @denominator_end: the denominator end of the range
1443 *
1444 * Sets @value to the range specified by @numerator_start/@denominator_start
1445 * and @numerator_end/@denominator_end.
1446 */
1447 void
1448 gst_value_set_fraction_range_full (GValue * value,
1449 gint numerator_start, gint denominator_start,
1450 gint numerator_end, gint denominator_end)
1451 {
1452 GValue start = { 0 };
1453 GValue end = { 0 };
1455 g_return_if_fail (value != NULL);
1456 g_return_if_fail (denominator_start != 0);
1457 g_return_if_fail (denominator_end != 0);
1458 g_return_if_fail (gst_util_fraction_compare (numerator_start,
1459 denominator_start, numerator_end, denominator_end) < 0);
1461 g_value_init (&start, GST_TYPE_FRACTION);
1462 g_value_init (&end, GST_TYPE_FRACTION);
1464 gst_value_set_fraction (&start, numerator_start, denominator_start);
1465 gst_value_set_fraction (&end, numerator_end, denominator_end);
1466 gst_value_set_fraction_range (value, &start, &end);
1468 g_value_unset (&start);
1469 g_value_unset (&end);
1470 }
1472 /**
1473 * gst_value_get_fraction_range_min:
1474 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1475 *
1476 * Gets the minimum of the range specified by @value.
1477 *
1478 * Returns: the minimum of the range
1479 */
1480 const GValue *
1481 gst_value_get_fraction_range_min (const GValue * value)
1482 {
1483 GValue *vals;
1485 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value), NULL);
1487 vals = (GValue *) value->data[0].v_pointer;
1488 if (vals != NULL) {
1489 return &vals[0];
1490 }
1492 return NULL;
1493 }
1495 /**
1496 * gst_value_get_fraction_range_max:
1497 * @value: a GValue initialized to GST_TYPE_FRACTION_RANGE
1498 *
1499 * Gets the maximum of the range specified by @value.
1500 *
1501 * Returns: the maximum of the range
1502 */
1503 const GValue *
1504 gst_value_get_fraction_range_max (const GValue * value)
1505 {
1506 GValue *vals;
1508 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION_RANGE (value), NULL);
1510 vals = (GValue *) value->data[0].v_pointer;
1511 if (vals != NULL) {
1512 return &vals[1];
1513 }
1515 return NULL;
1516 }
1518 static gchar *
1519 gst_value_serialize_fraction_range (const GValue * value)
1520 {
1521 GValue *vals = (GValue *) value->data[0].v_pointer;
1522 gchar *retval;
1524 if (vals == NULL) {
1525 retval = g_strdup ("[ 0/1, 0/1 ]");
1526 } else {
1527 gchar *start, *end;
1529 start = gst_value_serialize_fraction (&vals[0]);
1530 end = gst_value_serialize_fraction (&vals[1]);
1532 retval = g_strdup_printf ("[ %s, %s ]", start, end);
1533 g_free (start);
1534 g_free (end);
1535 }
1537 return retval;
1538 }
1540 static void
1541 gst_value_transform_fraction_range_string (const GValue * src_value,
1542 GValue * dest_value)
1543 {
1544 dest_value->data[0].v_pointer =
1545 gst_value_serialize_fraction_range (src_value);
1546 }
1548 static gint
1549 gst_value_compare_fraction_range (const GValue * value1, const GValue * value2)
1550 {
1551 GValue *vals1, *vals2;
1552 GstValueCompareFunc compare;
1554 if (value2->data[0].v_pointer == value1->data[0].v_pointer)
1555 return GST_VALUE_EQUAL; /* Only possible if both are NULL */
1557 if (value2->data[0].v_pointer == NULL || value1->data[0].v_pointer == NULL)
1558 return GST_VALUE_UNORDERED;
1560 vals1 = (GValue *) value1->data[0].v_pointer;
1561 vals2 = (GValue *) value2->data[0].v_pointer;
1562 if ((compare = gst_value_get_compare_func (&vals1[0]))) {
1563 if (gst_value_compare_with_func (&vals1[0], &vals2[0], compare) ==
1564 GST_VALUE_EQUAL &&
1565 gst_value_compare_with_func (&vals1[1], &vals2[1], compare) ==
1566 GST_VALUE_EQUAL)
1567 return GST_VALUE_EQUAL;
1568 }
1569 return GST_VALUE_UNORDERED;
1570 }
1572 static gboolean
1573 gst_value_deserialize_fraction_range (GValue * dest, const gchar * s)
1574 {
1575 g_warning ("unimplemented");
1576 return FALSE;
1577 }
1579 /***********
1580 * GstCaps *
1581 ***********/
1583 /**
1584 * gst_value_set_caps:
1585 * @value: a GValue initialized to GST_TYPE_CAPS
1586 * @caps: (transfer none): the caps to set the value to
1587 *
1588 * Sets the contents of @value to @caps. A reference to the
1589 * provided @caps will be taken by the @value.
1590 */
1591 void
1592 gst_value_set_caps (GValue * value, const GstCaps * caps)
1593 {
1594 g_return_if_fail (G_IS_VALUE (value));
1595 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_CAPS);
1596 g_return_if_fail (caps == NULL || GST_IS_CAPS (caps));
1598 g_value_set_boxed (value, caps);
1599 }
1601 /**
1602 * gst_value_get_caps:
1603 * @value: a GValue initialized to GST_TYPE_CAPS
1604 *
1605 * Gets the contents of @value. The reference count of the returned
1606 * #GstCaps will not be modified, therefore the caller must take one
1607 * before getting rid of the @value.
1608 *
1609 * Returns: (transfer none): the contents of @value
1610 */
1611 const GstCaps *
1612 gst_value_get_caps (const GValue * value)
1613 {
1614 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1615 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_CAPS, NULL);
1617 return (GstCaps *) g_value_get_boxed (value);
1618 }
1620 static gchar *
1621 gst_value_serialize_caps (const GValue * value)
1622 {
1623 GstCaps *caps = g_value_get_boxed (value);
1625 return gst_caps_to_string (caps);
1626 }
1628 static gboolean
1629 gst_value_deserialize_caps (GValue * dest, const gchar * s)
1630 {
1631 GstCaps *caps;
1633 caps = gst_caps_from_string (s);
1635 if (caps) {
1636 g_value_take_boxed (dest, caps);
1637 return TRUE;
1638 }
1639 return FALSE;
1640 }
1642 /****************
1643 * GstStructure *
1644 ****************/
1646 /**
1647 * gst_value_set_structure:
1648 * @value: a GValue initialized to GST_TYPE_STRUCTURE
1649 * @structure: the structure to set the value to
1650 *
1651 * Sets the contents of @value to @structure. The actual
1652 *
1653 * Since: 0.10.15
1654 */
1655 void
1656 gst_value_set_structure (GValue * value, const GstStructure * structure)
1657 {
1658 g_return_if_fail (G_IS_VALUE (value));
1659 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_STRUCTURE);
1660 g_return_if_fail (structure == NULL || GST_IS_STRUCTURE (structure));
1662 g_value_set_boxed (value, structure);
1663 }
1665 /**
1666 * gst_value_get_structure:
1667 * @value: a GValue initialized to GST_TYPE_STRUCTURE
1668 *
1669 * Gets the contents of @value.
1670 *
1671 * Returns: (transfer none): the contents of @value
1672 *
1673 * Since: 0.10.15
1674 */
1675 const GstStructure *
1676 gst_value_get_structure (const GValue * value)
1677 {
1678 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1679 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_STRUCTURE, NULL);
1681 return (GstStructure *) g_value_get_boxed (value);
1682 }
1684 static gchar *
1685 gst_value_serialize_structure (const GValue * value)
1686 {
1687 GstStructure *structure = g_value_get_boxed (value);
1689 return gst_string_take_and_wrap (gst_structure_to_string (structure));
1690 }
1692 static gboolean
1693 gst_value_deserialize_structure (GValue * dest, const gchar * s)
1694 {
1695 GstStructure *structure;
1697 if (*s != '"') {
1698 structure = gst_structure_from_string (s, NULL);
1699 } else {
1700 gchar *str = gst_string_unwrap (s);
1702 if (G_UNLIKELY (!str))
1703 return FALSE;
1705 structure = gst_structure_from_string (str, NULL);
1706 g_free (str);
1707 }
1709 if (G_LIKELY (structure)) {
1710 g_value_take_boxed (dest, structure);
1711 return TRUE;
1712 }
1713 return FALSE;
1714 }
1716 /*************
1717 * GstBuffer *
1718 *************/
1720 static gint
1721 gst_value_compare_buffer (const GValue * value1, const GValue * value2)
1722 {
1723 GstBuffer *buf1 = GST_BUFFER (gst_value_get_mini_object (value1));
1724 GstBuffer *buf2 = GST_BUFFER (gst_value_get_mini_object (value2));
1726 if (GST_BUFFER_SIZE (buf1) != GST_BUFFER_SIZE (buf2))
1727 return GST_VALUE_UNORDERED;
1728 if (GST_BUFFER_SIZE (buf1) == 0)
1729 return GST_VALUE_EQUAL;
1730 g_assert (GST_BUFFER_DATA (buf1));
1731 g_assert (GST_BUFFER_DATA (buf2));
1732 if (memcmp (GST_BUFFER_DATA (buf1), GST_BUFFER_DATA (buf2),
1733 GST_BUFFER_SIZE (buf1)) == 0)
1734 return GST_VALUE_EQUAL;
1736 return GST_VALUE_UNORDERED;
1737 }
1739 static gchar *
1740 gst_value_serialize_buffer (const GValue * value)
1741 {
1742 guint8 *data;
1743 gint i;
1744 gint size;
1745 gchar *string;
1746 GstBuffer *buffer;
1748 buffer = gst_value_get_buffer (value);
1749 if (buffer == NULL)
1750 return NULL;
1752 data = GST_BUFFER_DATA (buffer);
1753 size = GST_BUFFER_SIZE (buffer);
1755 string = g_malloc (size * 2 + 1);
1756 for (i = 0; i < size; i++) {
1757 sprintf (string + i * 2, "%02x", data[i]);
1758 }
1759 string[size * 2] = 0;
1761 return string;
1762 }
1764 static gboolean
1765 gst_value_deserialize_buffer (GValue * dest, const gchar * s)
1766 {
1767 GstBuffer *buffer;
1768 gint len;
1769 gchar ts[3];
1770 guint8 *data;
1771 gint i;
1773 len = strlen (s);
1774 if (len & 1)
1775 goto wrong_length;
1777 buffer = gst_buffer_new_and_alloc (len / 2);
1778 data = GST_BUFFER_DATA (buffer);
1779 for (i = 0; i < len / 2; i++) {
1780 if (!isxdigit ((int) s[i * 2]) || !isxdigit ((int) s[i * 2 + 1]))
1781 goto wrong_char;
1783 ts[0] = s[i * 2 + 0];
1784 ts[1] = s[i * 2 + 1];
1785 ts[2] = 0;
1787 data[i] = (guint8) strtoul (ts, NULL, 16);
1788 }
1790 gst_value_take_buffer (dest, buffer);
1792 return TRUE;
1794 /* ERRORS */
1795 wrong_length:
1796 {
1797 return FALSE;
1798 }
1799 wrong_char:
1800 {
1801 gst_buffer_unref (buffer);
1802 return FALSE;
1803 }
1804 }
1807 /***********
1808 * boolean *
1809 ***********/
1811 static gint
1812 gst_value_compare_boolean (const GValue * value1, const GValue * value2)
1813 {
1814 if ((value1->data[0].v_int != 0) == (value2->data[0].v_int != 0))
1815 return GST_VALUE_EQUAL;
1816 return GST_VALUE_UNORDERED;
1817 }
1819 static gchar *
1820 gst_value_serialize_boolean (const GValue * value)
1821 {
1822 if (value->data[0].v_int) {
1823 return g_strdup ("true");
1824 }
1825 return g_strdup ("false");
1826 }
1828 static gboolean
1829 gst_value_deserialize_boolean (GValue * dest, const gchar * s)
1830 {
1831 gboolean ret = FALSE;
1833 if (g_ascii_strcasecmp (s, "true") == 0 ||
1834 g_ascii_strcasecmp (s, "yes") == 0 ||
1835 g_ascii_strcasecmp (s, "t") == 0 || strcmp (s, "1") == 0) {
1836 g_value_set_boolean (dest, TRUE);
1837 ret = TRUE;
1838 } else if (g_ascii_strcasecmp (s, "false") == 0 ||
1839 g_ascii_strcasecmp (s, "no") == 0 ||
1840 g_ascii_strcasecmp (s, "f") == 0 || strcmp (s, "0") == 0) {
1841 g_value_set_boolean (dest, FALSE);
1842 ret = TRUE;
1843 }
1845 return ret;
1846 }
1848 #define CREATE_SERIALIZATION_START(_type,_macro) \
1849 static gint \
1850 gst_value_compare_ ## _type \
1851 (const GValue * value1, const GValue * value2) \
1852 { \
1853 g ## _type val1 = g_value_get_ ## _type (value1); \
1854 g ## _type val2 = g_value_get_ ## _type (value2); \
1855 if (val1 > val2) \
1856 return GST_VALUE_GREATER_THAN; \
1857 if (val1 < val2) \
1858 return GST_VALUE_LESS_THAN; \
1859 return GST_VALUE_EQUAL; \
1860 } \
1861 \
1862 static gchar * \
1863 gst_value_serialize_ ## _type (const GValue * value) \
1864 { \
1865 GValue val = { 0, }; \
1866 g_value_init (&val, G_TYPE_STRING); \
1867 if (!g_value_transform (value, &val)) \
1868 g_assert_not_reached (); \
1869 /* NO_COPY_MADNESS!!! */ \
1870 return (char *) g_value_get_string (&val); \
1871 }
1873 /* deserialize the given s into to as a gint64.
1874 * check if the result is actually storeable in the given size number of
1875 * bytes.
1876 */
1877 static gboolean
1878 gst_value_deserialize_int_helper (gint64 * to, const gchar * s,
1879 gint64 min, gint64 max, gint size)
1880 {
1881 gboolean ret = FALSE;
1882 gchar *end;
1883 gint64 mask = -1;
1885 errno = 0;
1886 *to = g_ascii_strtoull (s, &end, 0);
1887 /* a range error is a definitive no-no */
1888 if (errno == ERANGE) {
1889 return FALSE;
1890 }
1892 if (*end == 0) {
1893 ret = TRUE;
1894 } else {
1895 if (g_ascii_strcasecmp (s, "little_endian") == 0) {
1896 *to = G_LITTLE_ENDIAN;
1897 ret = TRUE;
1898 } else if (g_ascii_strcasecmp (s, "big_endian") == 0) {
1899 *to = G_BIG_ENDIAN;
1900 ret = TRUE;
1901 } else if (g_ascii_strcasecmp (s, "byte_order") == 0) {
1902 *to = G_BYTE_ORDER;
1903 ret = TRUE;
1904 } else if (g_ascii_strcasecmp (s, "min") == 0) {
1905 *to = min;
1906 ret = TRUE;
1907 } else if (g_ascii_strcasecmp (s, "max") == 0) {
1908 *to = max;
1909 ret = TRUE;
1910 }
1911 }
1912 if (ret) {
1913 /* by definition, a gint64 fits into a gint64; so ignore those */
1914 if (size != sizeof (mask)) {
1915 if (*to >= 0) {
1916 /* for positive numbers, we create a mask of 1's outside of the range
1917 * and 0's inside the range. An and will thus keep only 1 bits
1918 * outside of the range */
1919 mask <<= (size * 8);
1920 if ((mask & *to) != 0) {
1921 ret = FALSE;
1922 }
1923 } else {
1924 /* for negative numbers, we do a 2's complement version */
1925 mask <<= ((size * 8) - 1);
1926 if ((mask & *to) != mask) {
1927 ret = FALSE;
1928 }
1929 }
1930 }
1931 }
1932 return ret;
1933 }
1935 #define CREATE_SERIALIZATION(_type,_macro) \
1936 CREATE_SERIALIZATION_START(_type,_macro) \
1937 \
1938 static gboolean \
1939 gst_value_deserialize_ ## _type (GValue * dest, const gchar *s) \
1940 { \
1941 gint64 x; \
1942 \
1943 if (gst_value_deserialize_int_helper (&x, s, G_MIN ## _macro, \
1944 G_MAX ## _macro, sizeof (g ## _type))) { \
1945 g_value_set_ ## _type (dest, /*(g ## _type)*/ x); \
1946 return TRUE; \
1947 } else { \
1948 return FALSE; \
1949 } \
1950 }
1952 #define CREATE_USERIALIZATION(_type,_macro) \
1953 CREATE_SERIALIZATION_START(_type,_macro) \
1954 \
1955 static gboolean \
1956 gst_value_deserialize_ ## _type (GValue * dest, const gchar *s) \
1957 { \
1958 gint64 x; \
1959 gchar *end; \
1960 gboolean ret = FALSE; \
1961 \
1962 errno = 0; \
1963 x = g_ascii_strtoull (s, &end, 0); \
1964 /* a range error is a definitive no-no */ \
1965 if (errno == ERANGE) { \
1966 return FALSE; \
1967 } \
1968 /* the cast ensures the range check later on makes sense */ \
1969 x = (g ## _type) x; \
1970 if (*end == 0) { \
1971 ret = TRUE; \
1972 } else { \
1973 if (g_ascii_strcasecmp (s, "little_endian") == 0) { \
1974 x = G_LITTLE_ENDIAN; \
1975 ret = TRUE; \
1976 } else if (g_ascii_strcasecmp (s, "big_endian") == 0) { \
1977 x = G_BIG_ENDIAN; \
1978 ret = TRUE; \
1979 } else if (g_ascii_strcasecmp (s, "byte_order") == 0) { \
1980 x = G_BYTE_ORDER; \
1981 ret = TRUE; \
1982 } else if (g_ascii_strcasecmp (s, "min") == 0) { \
1983 x = 0; \
1984 ret = TRUE; \
1985 } else if (g_ascii_strcasecmp (s, "max") == 0) { \
1986 x = G_MAX ## _macro; \
1987 ret = TRUE; \
1988 } \
1989 } \
1990 if (ret) { \
1991 if (x > G_MAX ## _macro) { \
1992 ret = FALSE; \
1993 } else { \
1994 g_value_set_ ## _type (dest, x); \
1995 } \
1996 } \
1997 return ret; \
1998 }
2000 #define REGISTER_SERIALIZATION(_gtype, _type) \
2001 G_STMT_START { \
2002 static const GstValueTable gst_value = { \
2003 _gtype, \
2004 gst_value_compare_ ## _type, \
2005 gst_value_serialize_ ## _type, \
2006 gst_value_deserialize_ ## _type, \
2007 }; \
2008 \
2009 gst_value_register (&gst_value); \
2010 } G_STMT_END
2012 CREATE_SERIALIZATION (int, INT);
2013 CREATE_SERIALIZATION (int64, INT64);
2014 CREATE_SERIALIZATION (long, LONG);
2016 CREATE_USERIALIZATION (uint, UINT);
2017 CREATE_USERIALIZATION (uint64, UINT64);
2018 CREATE_USERIALIZATION (ulong, ULONG);
2020 /* FIXME 0.11: remove this again, plugins shouldn't have uchar properties */
2021 #ifndef G_MAXUCHAR
2022 #define G_MAXUCHAR 255
2023 #endif
2024 CREATE_USERIALIZATION (uchar, UCHAR);
2026 /**********
2027 * double *
2028 **********/
2029 static gint
2030 gst_value_compare_double (const GValue * value1, const GValue * value2)
2031 {
2032 if (value1->data[0].v_double > value2->data[0].v_double)
2033 return GST_VALUE_GREATER_THAN;
2034 if (value1->data[0].v_double < value2->data[0].v_double)
2035 return GST_VALUE_LESS_THAN;
2036 if (value1->data[0].v_double == value2->data[0].v_double)
2037 return GST_VALUE_EQUAL;
2038 return GST_VALUE_UNORDERED;
2039 }
2041 static gchar *
2042 gst_value_serialize_double (const GValue * value)
2043 {
2044 gchar d[G_ASCII_DTOSTR_BUF_SIZE];
2046 g_ascii_dtostr (d, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_double);
2047 return g_strdup (d);
2048 }
2050 static gboolean
2051 gst_value_deserialize_double (GValue * dest, const gchar * s)
2052 {
2053 gdouble x;
2054 gboolean ret = FALSE;
2055 gchar *end;
2057 x = g_ascii_strtod (s, &end);
2058 if (*end == 0) {
2059 ret = TRUE;
2060 } else {
2061 if (g_ascii_strcasecmp (s, "min") == 0) {
2062 x = -G_MAXDOUBLE;
2063 ret = TRUE;
2064 } else if (g_ascii_strcasecmp (s, "max") == 0) {
2065 x = G_MAXDOUBLE;
2066 ret = TRUE;
2067 }
2068 }
2069 if (ret) {
2070 g_value_set_double (dest, x);
2071 }
2072 return ret;
2073 }
2075 /*********
2076 * float *
2077 *********/
2079 static gint
2080 gst_value_compare_float (const GValue * value1, const GValue * value2)
2081 {
2082 if (value1->data[0].v_float > value2->data[0].v_float)
2083 return GST_VALUE_GREATER_THAN;
2084 if (value1->data[0].v_float < value2->data[0].v_float)
2085 return GST_VALUE_LESS_THAN;
2086 if (value1->data[0].v_float == value2->data[0].v_float)
2087 return GST_VALUE_EQUAL;
2088 return GST_VALUE_UNORDERED;
2089 }
2091 static gchar *
2092 gst_value_serialize_float (const GValue * value)
2093 {
2094 gchar d[G_ASCII_DTOSTR_BUF_SIZE];
2096 g_ascii_dtostr (d, G_ASCII_DTOSTR_BUF_SIZE, value->data[0].v_float);
2097 return g_strdup (d);
2098 }
2100 static gboolean
2101 gst_value_deserialize_float (GValue * dest, const gchar * s)
2102 {
2103 gdouble x;
2104 gboolean ret = FALSE;
2105 gchar *end;
2107 x = g_ascii_strtod (s, &end);
2108 if (*end == 0) {
2109 ret = TRUE;
2110 } else {
2111 if (g_ascii_strcasecmp (s, "min") == 0) {
2112 x = -G_MAXFLOAT;
2113 ret = TRUE;
2114 } else if (g_ascii_strcasecmp (s, "max") == 0) {
2115 x = G_MAXFLOAT;
2116 ret = TRUE;
2117 }
2118 }
2119 if (x > G_MAXFLOAT || x < -G_MAXFLOAT)
2120 ret = FALSE;
2121 if (ret) {
2122 g_value_set_float (dest, (float) x);
2123 }
2124 return ret;
2125 }
2127 /**********
2128 * string *
2129 **********/
2131 static gint
2132 gst_value_compare_string (const GValue * value1, const GValue * value2)
2133 {
2134 if (G_UNLIKELY (!value1->data[0].v_pointer || !value2->data[0].v_pointer)) {
2135 /* if only one is NULL, no match - otherwise both NULL == EQUAL */
2136 if (value1->data[0].v_pointer != value2->data[0].v_pointer)
2137 return GST_VALUE_UNORDERED;
2138 } else {
2139 gint x = strcmp (value1->data[0].v_pointer, value2->data[0].v_pointer);
2141 if (x < 0)
2142 return GST_VALUE_LESS_THAN;
2143 if (x > 0)
2144 return GST_VALUE_GREATER_THAN;
2145 }
2147 return GST_VALUE_EQUAL;
2148 }
2150 static gint
2151 gst_string_measure_wrapping (const gchar * s)
2152 {
2153 gint len;
2154 gboolean wrap = FALSE;
2156 if (G_UNLIKELY (s == NULL))
2157 return -1;
2159 /* Special case: the actual string NULL needs wrapping */
2160 if (G_UNLIKELY (strcmp (s, "NULL") == 0))
2161 return 4;
2163 len = 0;
2164 while (*s) {
2165 if (GST_ASCII_IS_STRING (*s)) {
2166 len++;
2167 } else if (*s < 0x20 || *s >= 0x7f) {
2168 wrap = TRUE;
2169 len += 4;
2170 } else {
2171 wrap = TRUE;
2172 len += 2;
2173 }
2174 s++;
2175 }
2177 /* Wrap the string if we found something that needs
2178 * wrapping, or the empty string (len == 0) */
2179 return (wrap || len == 0) ? len : -1;
2180 }
2182 static gchar *
2183 gst_string_wrap_inner (const gchar * s, gint len)
2184 {
2185 gchar *d, *e;
2187 e = d = g_malloc (len + 3);
2189 *e++ = '\"';
2190 while (*s) {
2191 if (GST_ASCII_IS_STRING (*s)) {
2192 *e++ = *s++;
2193 } else if (*s < 0x20 || *s >= 0x7f) {
2194 *e++ = '\\';
2195 *e++ = '0' + ((*(guchar *) s) >> 6);
2196 *e++ = '0' + (((*s) >> 3) & 0x7);
2197 *e++ = '0' + ((*s++) & 0x7);
2198 } else {
2199 *e++ = '\\';
2200 *e++ = *s++;
2201 }
2202 }
2203 *e++ = '\"';
2204 *e = 0;
2206 g_assert (e - d <= len + 3);
2207 return d;
2208 }
2210 /* Do string wrapping/escaping */
2211 static gchar *
2212 gst_string_wrap (const gchar * s)
2213 {
2214 gint len = gst_string_measure_wrapping (s);
2216 if (G_LIKELY (len < 0))
2217 return g_strdup (s);
2219 return gst_string_wrap_inner (s, len);
2220 }
2222 /* Same as above, but take ownership of the string */
2223 static gchar *
2224 gst_string_take_and_wrap (gchar * s)
2225 {
2226 gchar *out;
2227 gint len = gst_string_measure_wrapping (s);
2229 if (G_LIKELY (len < 0))
2230 return s;
2232 out = gst_string_wrap_inner (s, len);
2233 g_free (s);
2235 return out;
2236 }
2238 /*
2239 * This function takes a string delimited with double quotes (")
2240 * and unescapes any \xxx octal numbers.
2241 *
2242 * If sequences of \y are found where y is not in the range of
2243 * 0->3, y is copied unescaped.
2244 *
2245 * If \xyy is found where x is an octal number but y is not, an
2246 * error is encountered and NULL is returned.
2247 *
2248 * the input string must be \0 terminated.
2249 */
2250 static gchar *
2251 gst_string_unwrap (const gchar * s)
2252 {
2253 gchar *ret;
2254 gchar *read, *write;
2256 /* NULL string returns NULL */
2257 if (s == NULL)
2258 return NULL;
2260 /* strings not starting with " are invalid */
2261 if (*s != '"')
2262 return NULL;
2264 /* make copy of original string to hold the result. This
2265 * string will always be smaller than the original */
2266 ret = g_strdup (s);
2267 read = ret;
2268 write = ret;
2270 /* need to move to the next position as we parsed the " */
2271 read++;
2273 while (*read) {
2274 if (GST_ASCII_IS_STRING (*read)) {
2275 /* normal chars are just copied */
2276 *write++ = *read++;
2277 } else if (*read == '"') {
2278 /* quote marks end of string */
2279 break;
2280 } else if (*read == '\\') {
2281 /* got an escape char, move to next position to read a tripplet
2282 * of octal numbers */
2283 read++;
2284 /* is the next char a possible first octal number? */
2285 if (*read >= '0' && *read <= '3') {
2286 /* parse other 2 numbers, if one of them is not in the range of
2287 * an octal number, we error. We also catch the case where a zero
2288 * byte is found here. */
2289 if (read[1] < '0' || read[1] > '7' || read[2] < '0' || read[2] > '7')
2290 goto beach;
2292 /* now convert the octal number to a byte again. */
2293 *write++ = ((read[0] - '0') << 6) +
2294 ((read[1] - '0') << 3) + (read[2] - '0');
2296 read += 3;
2297 } else {
2298 /* if we run into a \0 here, we definitely won't get a quote later */
2299 if (*read == 0)
2300 goto beach;
2302 /* else copy \X sequence */
2303 *write++ = *read++;
2304 }
2305 } else {
2306 /* weird character, error */
2307 goto beach;
2308 }
2309 }
2310 /* if the string is not ending in " and zero terminated, we error */
2311 if (*read != '"' || read[1] != '\0')
2312 goto beach;
2314 /* null terminate result string and return */
2315 *write = '\0';
2316 return ret;
2318 beach:
2319 g_free (ret);
2320 return NULL;
2321 }
2323 static gchar *
2324 gst_value_serialize_string (const GValue * value)
2325 {
2326 return gst_string_wrap (value->data[0].v_pointer);
2327 }
2329 static gboolean
2330 gst_value_deserialize_string (GValue * dest, const gchar * s)
2331 {
2332 if (G_UNLIKELY (strcmp (s, "NULL") == 0)) {
2333 g_value_set_string (dest, NULL);
2334 return TRUE;
2335 } else if (G_LIKELY (*s != '"')) {
2336 if (!g_utf8_validate (s, -1, NULL))
2337 return FALSE;
2338 g_value_set_string (dest, s);
2339 return TRUE;
2340 } else {
2341 gchar *str = gst_string_unwrap (s);
2342 if (G_UNLIKELY (!str))
2343 return FALSE;
2344 g_value_take_string (dest, str);
2345 }
2347 return TRUE;
2348 }
2350 /********
2351 * enum *
2352 ********/
2354 static gint
2355 gst_value_compare_enum (const GValue * value1, const GValue * value2)
2356 {
2357 GEnumValue *en1, *en2;
2358 GEnumClass *klass1 = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value1));
2359 GEnumClass *klass2 = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value2));
2361 g_return_val_if_fail (klass1, GST_VALUE_UNORDERED);
2362 g_return_val_if_fail (klass2, GST_VALUE_UNORDERED);
2363 en1 = g_enum_get_value (klass1, g_value_get_enum (value1));
2364 en2 = g_enum_get_value (klass2, g_value_get_enum (value2));
2365 g_type_class_unref (klass1);
2366 g_type_class_unref (klass2);
2367 g_return_val_if_fail (en1, GST_VALUE_UNORDERED);
2368 g_return_val_if_fail (en2, GST_VALUE_UNORDERED);
2369 if (en1->value < en2->value)
2370 return GST_VALUE_LESS_THAN;
2371 if (en1->value > en2->value)
2372 return GST_VALUE_GREATER_THAN;
2374 return GST_VALUE_EQUAL;
2375 }
2377 static gchar *
2378 gst_value_serialize_enum (const GValue * value)
2379 {
2380 GEnumValue *en;
2381 GEnumClass *klass = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (value));
2383 g_return_val_if_fail (klass, NULL);
2384 en = g_enum_get_value (klass, g_value_get_enum (value));
2385 g_type_class_unref (klass);
2387 /* might be one of the custom formats registered later */
2388 if (G_UNLIKELY (en == NULL && G_VALUE_TYPE (value) == GST_TYPE_FORMAT)) {
2389 const GstFormatDefinition *format_def;
2391 format_def = gst_format_get_details ((GstFormat) g_value_get_enum (value));
2392 g_return_val_if_fail (format_def != NULL, NULL);
2393 return g_strdup (format_def->description);
2394 }
2396 g_return_val_if_fail (en, NULL);
2397 return g_strdup (en->value_name);
2398 }
2400 static gint
2401 gst_value_deserialize_enum_iter_cmp (const GstFormatDefinition * format_def,
2402 const gchar * s)
2403 {
2404 if (g_ascii_strcasecmp (s, format_def->nick) == 0)
2405 return 0;
2407 return g_ascii_strcasecmp (s, format_def->description);
2408 }
2410 static gboolean
2411 gst_value_deserialize_enum (GValue * dest, const gchar * s)
2412 {
2413 GEnumValue *en;
2414 gchar *endptr = NULL;
2415 GEnumClass *klass = (GEnumClass *) g_type_class_ref (G_VALUE_TYPE (dest));
2417 g_return_val_if_fail (klass, FALSE);
2418 if (!(en = g_enum_get_value_by_name (klass, s))) {
2419 if (!(en = g_enum_get_value_by_nick (klass, s))) {
2420 gint i = strtol (s, &endptr, 0);
2422 if (endptr && *endptr == '\0') {
2423 en = g_enum_get_value (klass, i);
2424 }
2425 }
2426 }
2427 g_type_class_unref (klass);
2429 /* might be one of the custom formats registered later */
2430 if (G_UNLIKELY (en == NULL && G_VALUE_TYPE (dest) == GST_TYPE_FORMAT)) {
2431 const GstFormatDefinition *format_def;
2432 GstIterator *iter;
2434 iter = gst_format_iterate_definitions ();
2436 format_def = gst_iterator_find_custom (iter,
2437 (GCompareFunc) gst_value_deserialize_enum_iter_cmp, (gpointer) s);
2439 g_return_val_if_fail (format_def != NULL, FALSE);
2440 g_value_set_enum (dest, (gint) format_def->value);
2441 gst_iterator_free (iter);
2442 return TRUE;
2443 }
2445 g_return_val_if_fail (en, FALSE);
2446 g_value_set_enum (dest, en->value);
2447 return TRUE;
2448 }
2450 /********
2451 * flags *
2452 ********/
2454 /* we just compare the value here */
2455 static gint
2456 gst_value_compare_flags (const GValue * value1, const GValue * value2)
2457 {
2458 guint fl1, fl2;
2459 GFlagsClass *klass1 =
2460 (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value1));
2461 GFlagsClass *klass2 =
2462 (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value2));
2464 g_return_val_if_fail (klass1, GST_VALUE_UNORDERED);
2465 g_return_val_if_fail (klass2, GST_VALUE_UNORDERED);
2466 fl1 = g_value_get_flags (value1);
2467 fl2 = g_value_get_flags (value2);
2468 g_type_class_unref (klass1);
2469 g_type_class_unref (klass2);
2470 if (fl1 < fl2)
2471 return GST_VALUE_LESS_THAN;
2472 if (fl1 > fl2)
2473 return GST_VALUE_GREATER_THAN;
2475 return GST_VALUE_EQUAL;
2476 }
2478 /* the different flags are serialized separated with a + */
2479 static gchar *
2480 gst_value_serialize_flags (const GValue * value)
2481 {
2482 guint flags;
2483 GFlagsValue *fl;
2484 GFlagsClass *klass = (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (value));
2485 gchar *result, *tmp;
2486 gboolean first = TRUE;
2488 g_return_val_if_fail (klass, NULL);
2490 flags = g_value_get_flags (value);
2492 /* if no flags are set, try to serialize to the _NONE string */
2493 if (!flags) {
2494 fl = g_flags_get_first_value (klass, flags);
2495 return g_strdup (fl->value_name);
2496 }
2498 /* some flags are set, so serialize one by one */
2499 result = g_strdup ("");
2500 while (flags) {
2501 fl = g_flags_get_first_value (klass, flags);
2502 if (fl != NULL) {
2503 tmp = g_strconcat (result, (first ? "" : "+"), fl->value_name, NULL);
2504 g_free (result);
2505 result = tmp;
2506 first = FALSE;
2508 /* clear flag */
2509 flags &= ~fl->value;
2510 }
2511 }
2512 g_type_class_unref (klass);
2514 return result;
2515 }
2517 static gboolean
2518 gst_value_deserialize_flags (GValue * dest, const gchar * s)
2519 {
2520 GFlagsValue *fl;
2521 gchar *endptr = NULL;
2522 GFlagsClass *klass = (GFlagsClass *) g_type_class_ref (G_VALUE_TYPE (dest));
2523 gchar **split;
2524 guint flags;
2525 gint i;
2527 g_return_val_if_fail (klass, FALSE);
2529 /* split into parts delimited with + */
2530 split = g_strsplit (s, "+", 0);
2532 flags = 0;
2533 i = 0;
2534 /* loop over each part */
2535 while (split[i]) {
2536 if (!(fl = g_flags_get_value_by_name (klass, split[i]))) {
2537 if (!(fl = g_flags_get_value_by_nick (klass, split[i]))) {
2538 gint val = strtol (split[i], &endptr, 0);
2540 /* just or numeric value */
2541 if (endptr && *endptr == '\0') {
2542 flags |= val;
2543 }
2544 }
2545 }
2546 if (fl) {
2547 flags |= fl->value;
2548 }
2549 i++;
2550 }
2551 g_strfreev (split);
2552 g_type_class_unref (klass);
2553 g_value_set_flags (dest, flags);
2555 return TRUE;
2556 }
2558 /*********
2559 * union *
2560 *********/
2562 static gboolean
2563 gst_value_union_int_int_range (GValue * dest, const GValue * src1,
2564 const GValue * src2)
2565 {
2566 if (src2->data[0].v_int <= src1->data[0].v_int &&
2567 src2->data[1].v_int >= src1->data[0].v_int) {
2568 gst_value_init_and_copy (dest, src2);
2569 return TRUE;
2570 }
2571 return FALSE;
2572 }
2574 static gboolean
2575 gst_value_union_int_range_int_range (GValue * dest, const GValue * src1,
2576 const GValue * src2)
2577 {
2578 gint min;
2579 gint max;
2581 min = MAX (src1->data[0].v_int, src2->data[0].v_int);
2582 max = MIN (src1->data[1].v_int, src2->data[1].v_int);
2584 if (min <= max) {
2585 g_value_init (dest, GST_TYPE_INT_RANGE);
2586 gst_value_set_int_range (dest,
2587 MIN (src1->data[0].v_int, src2->data[0].v_int),
2588 MAX (src1->data[1].v_int, src2->data[1].v_int));
2589 return TRUE;
2590 }
2592 return FALSE;
2593 }
2595 /****************
2596 * intersection *
2597 ****************/
2599 static gboolean
2600 gst_value_intersect_int_int_range (GValue * dest, const GValue * src1,
2601 const GValue * src2)
2602 {
2603 if (src2->data[0].v_int <= src1->data[0].v_int &&
2604 src2->data[1].v_int >= src1->data[0].v_int) {
2605 if (dest)
2606 gst_value_init_and_copy (dest, src1);
2607 return TRUE;
2608 }
2610 return FALSE;
2611 }
2613 static gboolean
2614 gst_value_intersect_int_range_int_range (GValue * dest, const GValue * src1,
2615 const GValue * src2)
2616 {
2617 gint min;
2618 gint max;
2620 min = MAX (src1->data[0].v_int, src2->data[0].v_int);
2621 max = MIN (src1->data[1].v_int, src2->data[1].v_int);
2623 if (min < max) {
2624 if (dest) {
2625 g_value_init (dest, GST_TYPE_INT_RANGE);
2626 gst_value_set_int_range (dest, min, max);
2627 }
2628 return TRUE;
2629 }
2630 if (min == max) {
2631 if (dest) {
2632 g_value_init (dest, G_TYPE_INT);
2633 g_value_set_int (dest, min);
2634 }
2635 return TRUE;
2636 }
2638 return FALSE;
2639 }
2641 static gboolean
2642 gst_value_intersect_int64_int64_range (GValue * dest, const GValue * src1,
2643 const GValue * src2)
2644 {
2645 if (src2->data[0].v_int64 <= src1->data[0].v_int64 &&
2646 src2->data[1].v_int64 >= src1->data[0].v_int64) {
2647 if (dest)
2648 gst_value_init_and_copy (dest, src1);
2649 return TRUE;
2650 }
2652 return FALSE;
2653 }
2655 static gboolean
2656 gst_value_intersect_int64_range_int64_range (GValue * dest, const GValue * src1,
2657 const GValue * src2)
2658 {
2659 gint64 min;
2660 gint64 max;
2662 min = MAX (src1->data[0].v_int64, src2->data[0].v_int64);
2663 max = MIN (src1->data[1].v_int64, src2->data[1].v_int64);
2665 if (min < max) {
2666 if (dest) {
2667 g_value_init (dest, GST_TYPE_INT64_RANGE);
2668 gst_value_set_int64_range (dest, min, max);
2669 }
2670 return TRUE;
2671 }
2672 if (min == max) {
2673 if (dest) {
2674 g_value_init (dest, G_TYPE_INT64);
2675 g_value_set_int64 (dest, min);
2676 }
2677 return TRUE;
2678 }
2680 return FALSE;
2681 }
2683 static gboolean
2684 gst_value_intersect_double_double_range (GValue * dest, const GValue * src1,
2685 const GValue * src2)
2686 {
2687 if (src2->data[0].v_double <= src1->data[0].v_double &&
2688 src2->data[1].v_double >= src1->data[0].v_double) {
2689 if (dest)
2690 gst_value_init_and_copy (dest, src1);
2691 return TRUE;
2692 }
2694 return FALSE;
2695 }
2697 static gboolean
2698 gst_value_intersect_double_range_double_range (GValue * dest,
2699 const GValue * src1, const GValue * src2)
2700 {
2701 gdouble min;
2702 gdouble max;
2704 min = MAX (src1->data[0].v_double, src2->data[0].v_double);
2705 max = MIN (src1->data[1].v_double, src2->data[1].v_double);
2707 if (min < max) {
2708 if (dest) {
2709 g_value_init (dest, GST_TYPE_DOUBLE_RANGE);
2710 gst_value_set_double_range (dest, min, max);
2711 }
2712 return TRUE;
2713 }
2714 if (min == max) {
2715 if (dest) {
2716 g_value_init (dest, G_TYPE_DOUBLE);
2717 g_value_set_int (dest, (int) min);
2718 }
2719 return TRUE;
2720 }
2722 return FALSE;
2723 }
2725 static gboolean
2726 gst_value_intersect_list (GValue * dest, const GValue * value1,
2727 const GValue * value2)
2728 {
2729 guint i, size;
2730 GValue intersection = { 0, };
2731 gboolean ret = FALSE;
2733 size = VALUE_LIST_SIZE (value1);
2734 for (i = 0; i < size; i++) {
2735 const GValue *cur = VALUE_LIST_GET_VALUE (value1, i);
2737 /* quicker version when we don't need the resulting set */
2738 if (!dest) {
2739 if (gst_value_intersect (NULL, cur, value2)) {
2740 ret = TRUE;
2741 break;
2742 }
2743 continue;
2744 }
2746 if (gst_value_intersect (&intersection, cur, value2)) {
2747 /* append value */
2748 if (!ret) {
2749 gst_value_init_and_copy (dest, &intersection);
2750 ret = TRUE;
2751 } else if (GST_VALUE_HOLDS_LIST (dest)) {
2752 gst_value_list_append_value (dest, &intersection);
2753 } else {
2754 GValue temp = { 0, };
2756 gst_value_init_and_copy (&temp, dest);
2757 g_value_unset (dest);
2758 gst_value_list_concat (dest, &temp, &intersection);
2759 g_value_unset (&temp);
2760 }
2761 g_value_unset (&intersection);
2762 }
2763 }
2765 return ret;
2766 }
2768 static gboolean
2769 gst_value_intersect_array (GValue * dest, const GValue * src1,
2770 const GValue * src2)
2771 {
2772 guint size;
2773 guint n;
2774 GValue val = { 0 };
2776 /* only works on similar-sized arrays */
2777 size = gst_value_array_get_size (src1);
2778 if (size != gst_value_array_get_size (src2))
2779 return FALSE;
2781 /* quicker value when we don't need the resulting set */
2782 if (!dest) {
2783 for (n = 0; n < size; n++) {
2784 if (!gst_value_intersect (NULL, gst_value_array_get_value (src1, n),
2785 gst_value_array_get_value (src2, n))) {
2786 return FALSE;
2787 }
2788 }
2789 return TRUE;
2790 }
2792 g_value_init (dest, GST_TYPE_ARRAY);
2794 for (n = 0; n < size; n++) {
2795 if (!gst_value_intersect (&val, gst_value_array_get_value (src1, n),
2796 gst_value_array_get_value (src2, n))) {
2797 g_value_unset (dest);
2798 return FALSE;
2799 }
2800 gst_value_array_append_value (dest, &val);
2801 g_value_unset (&val);
2802 }
2804 return TRUE;
2805 }
2807 static gboolean
2808 gst_value_intersect_fraction_fraction_range (GValue * dest, const GValue * src1,
2809 const GValue * src2)
2810 {
2811 gint res1, res2;
2812 GValue *vals;
2813 GstValueCompareFunc compare;
2815 vals = src2->data[0].v_pointer;
2817 if (vals == NULL)
2818 return FALSE;
2820 if ((compare = gst_value_get_compare_func (src1))) {
2821 res1 = gst_value_compare_with_func (&vals[0], src1, compare);
2822 res2 = gst_value_compare_with_func (&vals[1], src1, compare);
2824 if ((res1 == GST_VALUE_EQUAL || res1 == GST_VALUE_LESS_THAN) &&
2825 (res2 == GST_VALUE_EQUAL || res2 == GST_VALUE_GREATER_THAN)) {
2826 if (dest)
2827 gst_value_init_and_copy (dest, src1);
2828 return TRUE;
2829 }
2830 }
2832 return FALSE;
2833 }
2835 static gboolean
2836 gst_value_intersect_fraction_range_fraction_range (GValue * dest,
2837 const GValue * src1, const GValue * src2)
2838 {
2839 GValue *min;
2840 GValue *max;
2841 gint res;
2842 GValue *vals1, *vals2;
2843 GstValueCompareFunc compare;
2845 vals1 = src1->data[0].v_pointer;
2846 vals2 = src2->data[0].v_pointer;
2847 g_return_val_if_fail (vals1 != NULL && vals2 != NULL, FALSE);
2849 if ((compare = gst_value_get_compare_func (&vals1[0]))) {
2850 /* min = MAX (src1.start, src2.start) */
2851 res = gst_value_compare_with_func (&vals1[0], &vals2[0], compare);
2852 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2853 if (res == GST_VALUE_LESS_THAN)
2854 min = &vals2[0]; /* Take the max of the 2 */
2855 else
2856 min = &vals1[0];
2858 /* max = MIN (src1.end, src2.end) */
2859 res = gst_value_compare_with_func (&vals1[1], &vals2[1], compare);
2860 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2861 if (res == GST_VALUE_GREATER_THAN)
2862 max = &vals2[1]; /* Take the min of the 2 */
2863 else
2864 max = &vals1[1];
2866 res = gst_value_compare_with_func (min, max, compare);
2867 g_return_val_if_fail (res != GST_VALUE_UNORDERED, FALSE);
2868 if (res == GST_VALUE_LESS_THAN) {
2869 if (dest) {
2870 g_value_init (dest, GST_TYPE_FRACTION_RANGE);
2871 vals1 = dest->data[0].v_pointer;
2872 g_value_copy (min, &vals1[0]);
2873 g_value_copy (max, &vals1[1]);
2874 }
2875 return TRUE;
2876 }
2877 if (res == GST_VALUE_EQUAL) {
2878 if (dest)
2879 gst_value_init_and_copy (dest, min);
2880 return TRUE;
2881 }
2882 }
2884 return FALSE;
2885 }
2887 /***************
2888 * subtraction *
2889 ***************/
2891 static gboolean
2892 gst_value_subtract_int_int_range (GValue * dest, const GValue * minuend,
2893 const GValue * subtrahend)
2894 {
2895 gint min = gst_value_get_int_range_min (subtrahend);
2896 gint max = gst_value_get_int_range_max (subtrahend);
2897 gint val = g_value_get_int (minuend);
2899 /* subtracting a range from an int only works if the int is not in the
2900 * range */
2901 if (val < min || val > max) {
2902 /* and the result is the int */
2903 if (dest)
2904 gst_value_init_and_copy (dest, minuend);
2905 return TRUE;
2906 }
2907 return FALSE;
2908 }
2910 /* creates a new int range based on input values.
2911 */
2912 static gboolean
2913 gst_value_create_new_range (GValue * dest, gint min1, gint max1, gint min2,
2914 gint max2)
2915 {
2916 GValue v1 = { 0, };
2917 GValue v2 = { 0, };
2918 GValue *pv1, *pv2; /* yeah, hungarian! */
2920 if (min1 <= max1 && min2 <= max2) {
2921 pv1 = &v1;
2922 pv2 = &v2;
2923 } else if (min1 <= max1) {
2924 pv1 = dest;
2925 pv2 = NULL;
2926 } else if (min2 <= max2) {
2927 pv1 = NULL;
2928 pv2 = dest;
2929 } else {
2930 return FALSE;
2931 }
2933 if (!dest)
2934 return TRUE;
2936 if (min1 < max1) {
2937 g_value_init (pv1, GST_TYPE_INT_RANGE);
2938 gst_value_set_int_range (pv1, min1, max1);
2939 } else if (min1 == max1) {
2940 g_value_init (pv1, G_TYPE_INT);
2941 g_value_set_int (pv1, min1);
2942 }
2943 if (min2 < max2) {
2944 g_value_init (pv2, GST_TYPE_INT_RANGE);
2945 gst_value_set_int_range (pv2, min2, max2);
2946 } else if (min2 == max2) {
2947 g_value_init (pv2, G_TYPE_INT);
2948 g_value_set_int (pv2, min2);
2949 }
2951 if (min1 <= max1 && min2 <= max2) {
2952 gst_value_list_concat (dest, pv1, pv2);
2953 g_value_unset (pv1);
2954 g_value_unset (pv2);
2955 }
2956 return TRUE;
2957 }
2959 static gboolean
2960 gst_value_subtract_int_range_int (GValue * dest, const GValue * minuend,
2961 const GValue * subtrahend)
2962 {
2963 gint min = gst_value_get_int_range_min (minuend);
2964 gint max = gst_value_get_int_range_max (minuend);
2965 gint val = g_value_get_int (subtrahend);
2967 g_return_val_if_fail (min < max, FALSE);
2969 /* value is outside of the range, return range unchanged */
2970 if (val < min || val > max) {
2971 if (dest)
2972 gst_value_init_and_copy (dest, minuend);
2973 return TRUE;
2974 } else {
2975 /* max must be MAXINT too as val <= max */
2976 if (val == G_MAXINT) {
2977 max--;
2978 val--;
2979 }
2980 /* min must be MININT too as val >= max */
2981 if (val == G_MININT) {
2982 min++;
2983 val++;
2984 }
2985 if (dest)
2986 gst_value_create_new_range (dest, min, val - 1, val + 1, max);
2987 }
2988 return TRUE;
2989 }
2991 static gboolean
2992 gst_value_subtract_int_range_int_range (GValue * dest, const GValue * minuend,
2993 const GValue * subtrahend)
2994 {
2995 gint min1 = gst_value_get_int_range_min (minuend);
2996 gint max1 = gst_value_get_int_range_max (minuend);
2997 gint min2 = gst_value_get_int_range_min (subtrahend);
2998 gint max2 = gst_value_get_int_range_max (subtrahend);
3000 if (max2 == G_MAXINT && min2 == G_MININT) {
3001 return FALSE;
3002 } else if (max2 == G_MAXINT) {
3003 return gst_value_create_new_range (dest, min1, MIN (min2 - 1, max1), 1, 0);
3004 } else if (min2 == G_MININT) {
3005 return gst_value_create_new_range (dest, MAX (max2 + 1, min1), max1, 1, 0);
3006 } else {
3007 return gst_value_create_new_range (dest, min1, MIN (min2 - 1, max1),
3008 MAX (max2 + 1, min1), max1);
3009 }
3010 }
3012 static gboolean
3013 gst_value_subtract_int64_int64_range (GValue * dest, const GValue * minuend,
3014 const GValue * subtrahend)
3015 {
3016 gint64 min = gst_value_get_int64_range_min (subtrahend);
3017 gint64 max = gst_value_get_int64_range_max (subtrahend);
3018 gint64 val = g_value_get_int64 (minuend);
3020 /* subtracting a range from an int64 only works if the int64 is not in the
3021 * range */
3022 if (val < min || val > max) {
3023 /* and the result is the int64 */
3024 if (dest)
3025 gst_value_init_and_copy (dest, minuend);
3026 return TRUE;
3027 }
3028 return FALSE;
3029 }
3031 /* creates a new int64 range based on input values.
3032 */
3033 static gboolean
3034 gst_value_create_new_int64_range (GValue * dest, gint64 min1, gint64 max1,
3035 gint64 min2, gint64 max2)
3036 {
3037 GValue v1 = { 0, };
3038 GValue v2 = { 0, };
3039 GValue *pv1, *pv2; /* yeah, hungarian! */
3041 if (min1 <= max1 && min2 <= max2) {
3042 pv1 = &v1;
3043 pv2 = &v2;
3044 } else if (min1 <= max1) {
3045 pv1 = dest;
3046 pv2 = NULL;
3047 } else if (min2 <= max2) {
3048 pv1 = NULL;
3049 pv2 = dest;
3050 } else {
3051 return FALSE;
3052 }
3054 if (!dest)
3055 return TRUE;
3057 if (min1 < max1) {
3058 g_value_init (pv1, GST_TYPE_INT64_RANGE);
3059 gst_value_set_int64_range (pv1, min1, max1);
3060 } else if (min1 == max1) {
3061 g_value_init (pv1, G_TYPE_INT64);
3062 g_value_set_int64 (pv1, min1);
3063 }
3064 if (min2 < max2) {
3065 g_value_init (pv2, GST_TYPE_INT64_RANGE);
3066 gst_value_set_int64_range (pv2, min2, max2);
3067 } else if (min2 == max2) {
3068 g_value_init (pv2, G_TYPE_INT64);
3069 g_value_set_int64 (pv2, min2);
3070 }
3072 if (min1 <= max1 && min2 <= max2) {
3073 gst_value_list_concat (dest, pv1, pv2);
3074 g_value_unset (pv1);
3075 g_value_unset (pv2);
3076 }
3077 return TRUE;
3078 }
3080 static gboolean
3081 gst_value_subtract_int64_range_int64 (GValue * dest, const GValue * minuend,
3082 const GValue * subtrahend)
3083 {
3084 gint64 min = gst_value_get_int64_range_min (minuend);
3085 gint64 max = gst_value_get_int64_range_max (minuend);
3086 gint64 val = g_value_get_int64 (subtrahend);
3088 g_return_val_if_fail (min < max, FALSE);
3090 /* value is outside of the range, return range unchanged */
3091 if (val < min || val > max) {
3092 if (dest)
3093 gst_value_init_and_copy (dest, minuend);
3094 return TRUE;
3095 } else {
3096 /* max must be MAXINT64 too as val <= max */
3097 if (val == G_MAXINT64) {
3098 max--;
3099 val--;
3100 }
3101 /* min must be MININT64 too as val >= max */
3102 if (val == G_MININT64) {
3103 min++;
3104 val++;
3105 }
3106 if (dest)
3107 gst_value_create_new_int64_range (dest, min, val - 1, val + 1, max);
3108 }
3109 return TRUE;
3110 }
3112 static gboolean
3113 gst_value_subtract_int64_range_int64_range (GValue * dest,
3114 const GValue * minuend, const GValue * subtrahend)
3115 {
3116 gint64 min1 = gst_value_get_int64_range_min (minuend);
3117 gint64 max1 = gst_value_get_int64_range_max (minuend);
3118 gint64 min2 = gst_value_get_int64_range_min (subtrahend);
3119 gint64 max2 = gst_value_get_int64_range_max (subtrahend);
3121 if (max2 == G_MAXINT64 && min2 == G_MININT64) {
3122 return FALSE;
3123 } else if (max2 == G_MAXINT64) {
3124 return gst_value_create_new_int64_range (dest, min1, MIN (min2 - 1, max1),
3125 1, 0);
3126 } else if (min2 == G_MININT64) {
3127 return gst_value_create_new_int64_range (dest, MAX (max2 + 1, min1), max1,
3128 1, 0);
3129 } else {
3130 return gst_value_create_new_int64_range (dest, min1, MIN (min2 - 1, max1),
3131 MAX (max2 + 1, min1), max1);
3132 }
3133 }
3135 static gboolean
3136 gst_value_subtract_double_double_range (GValue * dest, const GValue * minuend,
3137 const GValue * subtrahend)
3138 {
3139 gdouble min = gst_value_get_double_range_min (subtrahend);
3140 gdouble max = gst_value_get_double_range_max (subtrahend);
3141 gdouble val = g_value_get_double (minuend);
3143 if (val < min || val > max) {
3144 if (dest)
3145 gst_value_init_and_copy (dest, minuend);
3146 return TRUE;
3147 }
3148 return FALSE;
3149 }
3151 static gboolean
3152 gst_value_subtract_double_range_double (GValue * dest, const GValue * minuend,
3153 const GValue * subtrahend)
3154 {
3155 /* since we don't have open ranges, we cannot create a hole in
3156 * a double range. We return the original range */
3157 if (dest)
3158 gst_value_init_and_copy (dest, minuend);
3159 return TRUE;
3160 }
3162 static gboolean
3163 gst_value_subtract_double_range_double_range (GValue * dest,
3164 const GValue * minuend, const GValue * subtrahend)
3165 {
3166 /* since we don't have open ranges, we have to approximate */
3167 /* done like with ints */
3168 gdouble min1 = gst_value_get_double_range_min (minuend);
3169 gdouble max2 = gst_value_get_double_range_max (minuend);
3170 gdouble max1 = MIN (gst_value_get_double_range_min (subtrahend), max2);
3171 gdouble min2 = MAX (gst_value_get_double_range_max (subtrahend), min1);
3172 GValue v1 = { 0, };
3173 GValue v2 = { 0, };
3174 GValue *pv1, *pv2; /* yeah, hungarian! */
3176 if (min1 < max1 && min2 < max2) {
3177 pv1 = &v1;
3178 pv2 = &v2;
3179 } else if (min1 < max1) {
3180 pv1 = dest;
3181 pv2 = NULL;
3182 } else if (min2 < max2) {
3183 pv1 = NULL;
3184 pv2 = dest;
3185 } else {
3186 return FALSE;
3187 }
3189 if (!dest)
3190 return TRUE;
3192 if (min1 < max1) {
3193 g_value_init (pv1, GST_TYPE_DOUBLE_RANGE);
3194 gst_value_set_double_range (pv1, min1, max1);
3195 }
3196 if (min2 < max2) {
3197 g_value_init (pv2, GST_TYPE_DOUBLE_RANGE);
3198 gst_value_set_double_range (pv2, min2, max2);
3199 }
3201 if (min1 < max1 && min2 < max2) {
3202 gst_value_list_concat (dest, pv1, pv2);
3203 g_value_unset (pv1);
3204 g_value_unset (pv2);
3205 }
3206 return TRUE;
3207 }
3209 static gboolean
3210 gst_value_subtract_from_list (GValue * dest, const GValue * minuend,
3211 const GValue * subtrahend)
3212 {
3213 guint i, size;
3214 GValue subtraction = { 0, };
3215 gboolean ret = FALSE;
3216 GType ltype;
3218 ltype = gst_value_list_get_type ();
3220 size = VALUE_LIST_SIZE (minuend);
3221 for (i = 0; i < size; i++) {
3222 const GValue *cur = VALUE_LIST_GET_VALUE (minuend, i);
3224 /* quicker version when we can discard the result */
3225 if (!dest) {
3226 if (gst_value_subtract (NULL, cur, subtrahend)) {
3227 ret = TRUE;
3228 break;
3229 }
3230 continue;
3231 }
3233 if (gst_value_subtract (&subtraction, cur, subtrahend)) {
3234 if (!ret) {
3235 gst_value_init_and_copy (dest, &subtraction);
3236 ret = TRUE;
3237 } else if (G_VALUE_HOLDS (dest, ltype)
3238 && !G_VALUE_HOLDS (&subtraction, ltype)) {
3239 gst_value_list_append_value (dest, &subtraction);
3240 } else {
3241 GValue temp = { 0, };
3243 gst_value_init_and_copy (&temp, dest);
3244 g_value_unset (dest);
3245 gst_value_list_concat (dest, &temp, &subtraction);
3246 g_value_unset (&temp);
3247 }
3248 g_value_unset (&subtraction);
3249 }
3250 }
3251 return ret;
3252 }
3254 static gboolean
3255 gst_value_subtract_list (GValue * dest, const GValue * minuend,
3256 const GValue * subtrahend)
3257 {
3258 guint i, size;
3259 GValue data[2] = { {0,}, {0,} };
3260 GValue *subtraction = &data[0], *result = &data[1];
3262 gst_value_init_and_copy (result, minuend);
3263 size = VALUE_LIST_SIZE (subtrahend);
3264 for (i = 0; i < size; i++) {
3265 const GValue *cur = VALUE_LIST_GET_VALUE (subtrahend, i);
3267 if (gst_value_subtract (subtraction, result, cur)) {
3268 GValue *temp = result;
3270 result = subtraction;
3271 subtraction = temp;
3272 g_value_unset (subtraction);
3273 } else {
3274 g_value_unset (result);
3275 return FALSE;
3276 }
3277 }
3278 if (dest)
3279 gst_value_init_and_copy (dest, result);
3280 g_value_unset (result);
3281 return TRUE;
3282 }
3284 static gboolean
3285 gst_value_subtract_fraction_fraction_range (GValue * dest,
3286 const GValue * minuend, const GValue * subtrahend)
3287 {
3288 const GValue *min = gst_value_get_fraction_range_min (subtrahend);
3289 const GValue *max = gst_value_get_fraction_range_max (subtrahend);
3290 GstValueCompareFunc compare;
3292 if ((compare = gst_value_get_compare_func (minuend))) {
3293 /* subtracting a range from an fraction only works if the fraction
3294 * is not in the range */
3295 if (gst_value_compare_with_func (minuend, min, compare) ==
3296 GST_VALUE_LESS_THAN ||
3297 gst_value_compare_with_func (minuend, max, compare) ==
3298 GST_VALUE_GREATER_THAN) {
3299 /* and the result is the value */
3300 if (dest)
3301 gst_value_init_and_copy (dest, minuend);
3302 return TRUE;
3303 }
3304 }
3305 return FALSE;
3306 }
3308 static gboolean
3309 gst_value_subtract_fraction_range_fraction (GValue * dest,
3310 const GValue * minuend, const GValue * subtrahend)
3311 {
3312 /* since we don't have open ranges, we cannot create a hole in
3313 * a range. We return the original range */
3314 if (dest)
3315 gst_value_init_and_copy (dest, minuend);
3316 return TRUE;
3317 }
3319 static gboolean
3320 gst_value_subtract_fraction_range_fraction_range (GValue * dest,
3321 const GValue * minuend, const GValue * subtrahend)
3322 {
3323 /* since we don't have open ranges, we have to approximate */
3324 /* done like with ints and doubles. Creates a list of 2 fraction ranges */
3325 const GValue *min1 = gst_value_get_fraction_range_min (minuend);
3326 const GValue *max2 = gst_value_get_fraction_range_max (minuend);
3327 const GValue *max1 = gst_value_get_fraction_range_min (subtrahend);
3328 const GValue *min2 = gst_value_get_fraction_range_max (subtrahend);
3329 gint cmp1, cmp2;
3330 GValue v1 = { 0, };
3331 GValue v2 = { 0, };
3332 GValue *pv1, *pv2; /* yeah, hungarian! */
3333 GstValueCompareFunc compare;
3335 g_return_val_if_fail (min1 != NULL && max1 != NULL, FALSE);
3336 g_return_val_if_fail (min2 != NULL && max2 != NULL, FALSE);
3338 compare = gst_value_get_compare_func (min1);
3339 g_return_val_if_fail (compare, FALSE);
3341 cmp1 = gst_value_compare_with_func (max2, max1, compare);
3342 g_return_val_if_fail (cmp1 != GST_VALUE_UNORDERED, FALSE);
3343 if (cmp1 == GST_VALUE_LESS_THAN)
3344 max1 = max2;
3345 cmp1 = gst_value_compare_with_func (min1, min2, compare);
3346 g_return_val_if_fail (cmp1 != GST_VALUE_UNORDERED, FALSE);
3347 if (cmp1 == GST_VALUE_GREATER_THAN)
3348 min2 = min1;
3350 cmp1 = gst_value_compare_with_func (min1, max1, compare);
3351 cmp2 = gst_value_compare_with_func (min2, max2, compare);
3353 if (cmp1 == GST_VALUE_LESS_THAN && cmp2 == GST_VALUE_LESS_THAN) {
3354 pv1 = &v1;
3355 pv2 = &v2;
3356 } else if (cmp1 == GST_VALUE_LESS_THAN) {
3357 pv1 = dest;
3358 pv2 = NULL;
3359 } else if (cmp2 == GST_VALUE_LESS_THAN) {
3360 pv1 = NULL;
3361 pv2 = dest;
3362 } else {
3363 return FALSE;
3364 }
3366 if (!dest)
3367 return TRUE;
3369 if (cmp1 == GST_VALUE_LESS_THAN) {
3370 g_value_init (pv1, GST_TYPE_FRACTION_RANGE);
3371 gst_value_set_fraction_range (pv1, min1, max1);
3372 }
3373 if (cmp2 == GST_VALUE_LESS_THAN) {
3374 g_value_init (pv2, GST_TYPE_FRACTION_RANGE);
3375 gst_value_set_fraction_range (pv2, min2, max2);
3376 }
3378 if (cmp1 == GST_VALUE_LESS_THAN && cmp2 == GST_VALUE_LESS_THAN) {
3379 gst_value_list_concat (dest, pv1, pv2);
3380 g_value_unset (pv1);
3381 g_value_unset (pv2);
3382 }
3383 return TRUE;
3384 }
3387 /**************
3388 * comparison *
3389 **************/
3391 /*
3392 * gst_value_get_compare_func:
3393 * @value1: a value to get the compare function for
3394 *
3395 * Determines the compare function to be used with values of the same type as
3396 * @value1. The function can be given to gst_value_compare_with_func().
3397 *
3398 * Returns: A #GstValueCompareFunc value
3399 */
3400 static GstValueCompareFunc
3401 gst_value_get_compare_func (const GValue * value1)
3402 {
3403 GstValueTable *table, *best = NULL;
3404 guint i;
3405 GType type1;
3407 type1 = G_VALUE_TYPE (value1);
3409 /* this is a fast check */
3410 best = gst_value_hash_lookup_type (type1);
3412 /* slower checks */
3413 if (G_UNLIKELY (!best || !best->compare)) {
3414 guint len = gst_value_table->len;
3416 best = NULL;
3417 for (i = 0; i < len; i++) {
3418 table = &g_array_index (gst_value_table, GstValueTable, i);
3419 if (table->compare && g_type_is_a (type1, table->type)) {
3420 if (!best || g_type_is_a (table->type, best->type))
3421 best = table;
3422 }
3423 }
3424 }
3425 if (G_LIKELY (best))
3426 return best->compare;
3428 return NULL;
3429 }
3431 /**
3432 * gst_value_can_compare:
3433 * @value1: a value to compare
3434 * @value2: another value to compare
3435 *
3436 * Determines if @value1 and @value2 can be compared.
3437 *
3438 * Returns: TRUE if the values can be compared
3439 */
3440 gboolean
3441 gst_value_can_compare (const GValue * value1, const GValue * value2)
3442 {
3443 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3444 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3446 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3447 return FALSE;
3449 return gst_value_get_compare_func (value1) != NULL;
3450 }
3452 static gboolean
3453 gst_value_list_equals_range (const GValue * list, const GValue * value)
3454 {
3455 const GValue *first;
3456 guint list_size, n;
3458 g_return_val_if_fail (G_IS_VALUE (list), FALSE);
3459 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
3460 g_return_val_if_fail (GST_VALUE_HOLDS_LIST (list), FALSE);
3462 /* TODO: compare against an empty list ? No type though... */
3463 list_size = VALUE_LIST_SIZE (list);
3464 if (list_size == 0)
3465 return FALSE;
3467 /* compare the basic types - they have to match */
3468 first = VALUE_LIST_GET_VALUE (list, 0);
3469 #define CHECK_TYPES(type,prefix) \
3470 (prefix##_VALUE_HOLDS_##type(first) && GST_VALUE_HOLDS_##type##_RANGE (value))
3471 if (CHECK_TYPES (INT, G)) {
3472 const gint rmin = gst_value_get_int_range_min (value);
3473 const gint rmax = gst_value_get_int_range_max (value);
3474 /* note: this will overflow for min 0 and max INT_MAX, but this
3475 would only be equal to a list of INT_MAX elements, which seems
3476 very unlikely */
3477 if (list_size != rmax - rmin + 1)
3478 return FALSE;
3479 for (n = 0; n < list_size; ++n) {
3480 gint v = g_value_get_int (VALUE_LIST_GET_VALUE (list, n));
3481 if (v < rmin || v > rmax) {
3482 return FALSE;
3483 }
3484 }
3485 return TRUE;
3486 } else if (CHECK_TYPES (INT64, G)) {
3487 const gint64 rmin = gst_value_get_int64_range_min (value);
3488 const gint64 rmax = gst_value_get_int64_range_max (value);
3489 GST_DEBUG ("List/range of int64s");
3490 if (list_size != rmax - rmin + 1)
3491 return FALSE;
3492 for (n = 0; n < list_size; ++n) {
3493 gint64 v = g_value_get_int64 (VALUE_LIST_GET_VALUE (list, n));
3494 if (v < rmin || v > rmax)
3495 return FALSE;
3496 }
3497 return TRUE;
3498 }
3499 #undef CHECK_TYPES
3501 /* other combinations don't make sense for equality */
3502 return FALSE;
3503 }
3505 /**
3506 * gst_value_compare:
3507 * @value1: a value to compare
3508 * @value2: another value to compare
3509 *
3510 * Compares @value1 and @value2. If @value1 and @value2 cannot be
3511 * compared, the function returns GST_VALUE_UNORDERED. Otherwise,
3512 * if @value1 is greater than @value2, GST_VALUE_GREATER_THAN is returned.
3513 * If @value1 is less than @value2, GST_VALUE_LESS_THAN is returned.
3514 * If the values are equal, GST_VALUE_EQUAL is returned.
3515 *
3516 * Returns: comparison result
3517 */
3518 gint
3519 gst_value_compare (const GValue * value1, const GValue * value2)
3520 {
3521 GstValueCompareFunc compare;
3522 GType ltype;
3524 g_return_val_if_fail (G_IS_VALUE (value1), GST_VALUE_LESS_THAN);
3525 g_return_val_if_fail (G_IS_VALUE (value2), GST_VALUE_GREATER_THAN);
3527 /* Special cases: lists and scalar values ("{ 1 }" and "1" are equal),
3528 as well as lists and ranges ("{ 1, 2 }" and "[ 1, 2 ]" are equal) */
3529 ltype = gst_value_list_get_type ();
3530 if (G_VALUE_HOLDS (value1, ltype) && !G_VALUE_HOLDS (value2, ltype)) {
3532 if (gst_value_list_equals_range (value1, value2)) {
3533 return GST_VALUE_EQUAL;
3534 } else if (gst_value_list_get_size (value1) == 1) {
3535 const GValue *elt;
3537 elt = gst_value_list_get_value (value1, 0);
3538 return gst_value_compare (elt, value2);
3539 }
3540 } else if (G_VALUE_HOLDS (value2, ltype) && !G_VALUE_HOLDS (value1, ltype)) {
3541 if (gst_value_list_equals_range (value2, value1)) {
3542 return GST_VALUE_EQUAL;
3543 } else if (gst_value_list_get_size (value2) == 1) {
3544 const GValue *elt;
3546 elt = gst_value_list_get_value (value2, 0);
3547 return gst_value_compare (elt, value1);
3548 }
3549 }
3551 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3552 return GST_VALUE_UNORDERED;
3554 compare = gst_value_get_compare_func (value1);
3555 if (compare) {
3556 return compare (value1, value2);
3557 }
3559 g_critical ("unable to compare values of type %s\n",
3560 g_type_name (G_VALUE_TYPE (value1)));
3561 return GST_VALUE_UNORDERED;
3562 }
3564 /*
3565 * gst_value_compare_with_func:
3566 * @value1: a value to compare
3567 * @value2: another value to compare
3568 * @compare: compare function
3569 *
3570 * Compares @value1 and @value2 using the @compare function. Works like
3571 * gst_value_compare() but allows to save time determining the compare function
3572 * a multiple times.
3573 *
3574 * Returns: comparison result
3575 */
3576 static gint
3577 gst_value_compare_with_func (const GValue * value1, const GValue * value2,
3578 GstValueCompareFunc compare)
3579 {
3580 g_assert (compare);
3582 if (G_VALUE_TYPE (value1) != G_VALUE_TYPE (value2))
3583 return GST_VALUE_UNORDERED;
3585 return compare (value1, value2);
3586 }
3588 /* union */
3590 /**
3591 * gst_value_can_union:
3592 * @value1: a value to union
3593 * @value2: another value to union
3594 *
3595 * Determines if @value1 and @value2 can be non-trivially unioned.
3596 * Any two values can be trivially unioned by adding both of them
3597 * to a GstValueList. However, certain types have the possibility
3598 * to be unioned in a simpler way. For example, an integer range
3599 * and an integer can be unioned if the integer is a subset of the
3600 * integer range. If there is the possibility that two values can
3601 * be unioned, this function returns TRUE.
3602 *
3603 * Returns: TRUE if there is a function allowing the two values to
3604 * be unioned.
3605 */
3606 gboolean
3607 gst_value_can_union (const GValue * value1, const GValue * value2)
3608 {
3609 GstValueUnionInfo *union_info;
3610 guint i, len;
3612 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3613 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3615 len = gst_value_union_funcs->len;
3617 for (i = 0; i < len; i++) {
3618 union_info = &g_array_index (gst_value_union_funcs, GstValueUnionInfo, i);
3619 if (union_info->type1 == G_VALUE_TYPE (value1) &&
3620 union_info->type2 == G_VALUE_TYPE (value2))
3621 return TRUE;
3622 if (union_info->type1 == G_VALUE_TYPE (value2) &&
3623 union_info->type2 == G_VALUE_TYPE (value1))
3624 return TRUE;
3625 }
3627 return FALSE;
3628 }
3630 /**
3631 * gst_value_union:
3632 * @dest: (out caller-allocates): the destination value
3633 * @value1: a value to union
3634 * @value2: another value to union
3635 *
3636 * Creates a GValue corresponding to the union of @value1 and @value2.
3637 *
3638 * Returns: always returns %TRUE
3639 */
3640 /* FIXME: change return type to 'void'? */
3641 gboolean
3642 gst_value_union (GValue * dest, const GValue * value1, const GValue * value2)
3643 {
3644 GstValueUnionInfo *union_info;
3645 guint i, len;
3647 g_return_val_if_fail (dest != NULL, FALSE);
3648 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3649 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3651 len = gst_value_union_funcs->len;
3653 for (i = 0; i < len; i++) {
3654 union_info = &g_array_index (gst_value_union_funcs, GstValueUnionInfo, i);
3655 if (union_info->type1 == G_VALUE_TYPE (value1) &&
3656 union_info->type2 == G_VALUE_TYPE (value2)) {
3657 if (union_info->func (dest, value1, value2)) {
3658 return TRUE;
3659 }
3660 }
3661 if (union_info->type1 == G_VALUE_TYPE (value2) &&
3662 union_info->type2 == G_VALUE_TYPE (value1)) {
3663 if (union_info->func (dest, value2, value1)) {
3664 return TRUE;
3665 }
3666 }
3667 }
3669 gst_value_list_concat (dest, value1, value2);
3670 return TRUE;
3671 }
3673 /**
3674 * gst_value_register_union_func:
3675 * @type1: a type to union
3676 * @type2: another type to union
3677 * @func: a function that implements creating a union between the two types
3678 *
3679 * Registers a union function that can create a union between #GValue items
3680 * of the type @type1 and @type2.
3681 *
3682 * Union functions should be registered at startup before any pipelines are
3683 * started, as gst_value_register_union_func() is not thread-safe and cannot
3684 * be used at the same time as gst_value_union() or gst_value_can_union().
3685 */
3686 void
3687 gst_value_register_union_func (GType type1, GType type2, GstValueUnionFunc func)
3688 {
3689 GstValueUnionInfo union_info;
3691 union_info.type1 = type1;
3692 union_info.type2 = type2;
3693 union_info.func = func;
3695 g_array_append_val (gst_value_union_funcs, union_info);
3696 }
3698 /* intersection */
3700 /**
3701 * gst_value_can_intersect:
3702 * @value1: a value to intersect
3703 * @value2: another value to intersect
3704 *
3705 * Determines if intersecting two values will produce a valid result.
3706 * Two values will produce a valid intersection if they have the same
3707 * type, or if there is a method (registered by
3708 * gst_value_register_intersect_func()) to calculate the intersection.
3709 *
3710 * Returns: TRUE if the values can intersect
3711 */
3712 gboolean
3713 gst_value_can_intersect (const GValue * value1, const GValue * value2)
3714 {
3715 GstValueIntersectInfo *intersect_info;
3716 guint i, len;
3717 GType ltype, type1, type2;
3719 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3720 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3722 ltype = gst_value_list_get_type ();
3724 /* special cases */
3725 if (G_VALUE_HOLDS (value1, ltype) || G_VALUE_HOLDS (value2, ltype))
3726 return TRUE;
3728 type1 = G_VALUE_TYPE (value1);
3729 type2 = G_VALUE_TYPE (value2);
3731 /* practically all GstValue types have a compare function (_can_compare=TRUE)
3732 * GstStructure and GstCaps have npot, but are intersectable */
3733 if (type1 == type2)
3734 return TRUE;
3736 /* check registered intersect functions */
3737 len = gst_value_intersect_funcs->len;
3738 for (i = 0; i < len; i++) {
3739 intersect_info = &g_array_index (gst_value_intersect_funcs,
3740 GstValueIntersectInfo, i);
3741 if ((intersect_info->type1 == type1 && intersect_info->type2 == type2) ||
3742 (intersect_info->type1 == type2 && intersect_info->type2 == type1))
3743 return TRUE;
3744 }
3746 return gst_value_can_compare (value1, value2);
3747 }
3749 /**
3750 * gst_value_intersect:
3751 * @dest: (out caller-allocates): a uninitialized #GValue that will hold the calculated
3752 * intersection value. May be NULL if the resulting set if not needed.
3753 * @value1: a value to intersect
3754 * @value2: another value to intersect
3755 *
3756 * Calculates the intersection of two values. If the values have
3757 * a non-empty intersection, the value representing the intersection
3758 * is placed in @dest, unless NULL. If the intersection is non-empty,
3759 * @dest is not modified.
3760 *
3761 * Returns: TRUE if the intersection is non-empty
3762 */
3763 gboolean
3764 gst_value_intersect (GValue * dest, const GValue * value1,
3765 const GValue * value2)
3766 {
3767 GstValueIntersectInfo *intersect_info;
3768 guint i, len;
3769 GType ltype, type1, type2;
3771 g_return_val_if_fail (G_IS_VALUE (value1), FALSE);
3772 g_return_val_if_fail (G_IS_VALUE (value2), FALSE);
3774 ltype = gst_value_list_get_type ();
3776 /* special cases first */
3777 if (G_VALUE_HOLDS (value1, ltype))
3778 return gst_value_intersect_list (dest, value1, value2);
3779 if (G_VALUE_HOLDS (value2, ltype))
3780 return gst_value_intersect_list (dest, value2, value1);
3782 if (gst_value_compare (value1, value2) == GST_VALUE_EQUAL) {
3783 if (dest)
3784 gst_value_init_and_copy (dest, value1);
3785 return TRUE;
3786 }
3788 type1 = G_VALUE_TYPE (value1);
3789 type2 = G_VALUE_TYPE (value2);
3791 len = gst_value_intersect_funcs->len;
3792 for (i = 0; i < len; i++) {
3793 intersect_info = &g_array_index (gst_value_intersect_funcs,
3794 GstValueIntersectInfo, i);
3795 if (intersect_info->type1 == type1 && intersect_info->type2 == type2) {
3796 return intersect_info->func (dest, value1, value2);
3797 }
3798 if (intersect_info->type1 == type2 && intersect_info->type2 == type1) {
3799 return intersect_info->func (dest, value2, value1);
3800 }
3801 }
3802 return FALSE;
3803 }
3807 /**
3808 * gst_value_register_intersect_func:
3809 * @type1: the first type to intersect
3810 * @type2: the second type to intersect
3811 * @func: the intersection function
3812 *
3813 * Registers a function that is called to calculate the intersection
3814 * of the values having the types @type1 and @type2.
3815 *
3816 * Intersect functions should be registered at startup before any pipelines are
3817 * started, as gst_value_register_intersect_func() is not thread-safe and
3818 * cannot be used at the same time as gst_value_intersect() or
3819 * gst_value_can_intersect().
3820 */
3821 void
3822 gst_value_register_intersect_func (GType type1, GType type2,
3823 GstValueIntersectFunc func)
3824 {
3825 GstValueIntersectInfo intersect_info;
3827 intersect_info.type1 = type1;
3828 intersect_info.type2 = type2;
3829 intersect_info.func = func;
3831 g_array_append_val (gst_value_intersect_funcs, intersect_info);
3832 }
3835 /* subtraction */
3837 /**
3838 * gst_value_subtract:
3839 * @dest: (out caller-allocates): the destination value for the result if the
3840 * subtraction is not empty. May be NULL, in which case the resulting set
3841 * will not be computed, which can give a fair speedup.
3842 * @minuend: the value to subtract from
3843 * @subtrahend: the value to subtract
3844 *
3845 * Subtracts @subtrahend from @minuend and stores the result in @dest.
3846 * Note that this means subtraction as in sets, not as in mathematics.
3847 *
3848 * Returns: %TRUE if the subtraction is not empty
3849 */
3850 gboolean
3851 gst_value_subtract (GValue * dest, const GValue * minuend,
3852 const GValue * subtrahend)
3853 {
3854 GstValueSubtractInfo *info;
3855 guint i, len;
3856 GType ltype, mtype, stype;
3858 g_return_val_if_fail (G_IS_VALUE (minuend), FALSE);
3859 g_return_val_if_fail (G_IS_VALUE (subtrahend), FALSE);
3861 ltype = gst_value_list_get_type ();
3863 /* special cases first */
3864 if (G_VALUE_HOLDS (minuend, ltype))
3865 return gst_value_subtract_from_list (dest, minuend, subtrahend);
3866 if (G_VALUE_HOLDS (subtrahend, ltype))
3867 return gst_value_subtract_list (dest, minuend, subtrahend);
3869 mtype = G_VALUE_TYPE (minuend);
3870 stype = G_VALUE_TYPE (subtrahend);
3872 len = gst_value_subtract_funcs->len;
3873 for (i = 0; i < len; i++) {
3874 info = &g_array_index (gst_value_subtract_funcs, GstValueSubtractInfo, i);
3875 if (info->minuend == mtype && info->subtrahend == stype) {
3876 return info->func (dest, minuend, subtrahend);
3877 }
3878 }
3880 if (gst_value_compare (minuend, subtrahend) != GST_VALUE_EQUAL) {
3881 if (dest)
3882 gst_value_init_and_copy (dest, minuend);
3883 return TRUE;
3884 }
3886 return FALSE;
3887 }
3889 #if 0
3890 gboolean
3891 gst_value_subtract (GValue * dest, const GValue * minuend,
3892 const GValue * subtrahend)
3893 {
3894 gboolean ret = gst_value_subtract2 (dest, minuend, subtrahend);
3896 g_printerr ("\"%s\" - \"%s\" = \"%s\"\n", gst_value_serialize (minuend),
3897 gst_value_serialize (subtrahend),
3898 ret ? gst_value_serialize (dest) : "---");
3899 return ret;
3900 }
3901 #endif
3903 /**
3904 * gst_value_can_subtract:
3905 * @minuend: the value to subtract from
3906 * @subtrahend: the value to subtract
3907 *
3908 * Checks if it's possible to subtract @subtrahend from @minuend.
3909 *
3910 * Returns: TRUE if a subtraction is possible
3911 */
3912 gboolean
3913 gst_value_can_subtract (const GValue * minuend, const GValue * subtrahend)
3914 {
3915 GstValueSubtractInfo *info;
3916 guint i, len;
3917 GType ltype, mtype, stype;
3919 g_return_val_if_fail (G_IS_VALUE (minuend), FALSE);
3920 g_return_val_if_fail (G_IS_VALUE (subtrahend), FALSE);
3922 ltype = gst_value_list_get_type ();
3924 /* special cases */
3925 if (G_VALUE_HOLDS (minuend, ltype) || G_VALUE_HOLDS (subtrahend, ltype))
3926 return TRUE;
3928 mtype = G_VALUE_TYPE (minuend);
3929 stype = G_VALUE_TYPE (subtrahend);
3931 len = gst_value_subtract_funcs->len;
3932 for (i = 0; i < len; i++) {
3933 info = &g_array_index (gst_value_subtract_funcs, GstValueSubtractInfo, i);
3934 if (info->minuend == mtype && info->subtrahend == stype)
3935 return TRUE;
3936 }
3938 return gst_value_can_compare (minuend, subtrahend);
3939 }
3941 /**
3942 * gst_value_register_subtract_func:
3943 * @minuend_type: type of the minuend
3944 * @subtrahend_type: type of the subtrahend
3945 * @func: function to use
3946 *
3947 * Registers @func as a function capable of subtracting the values of
3948 * @subtrahend_type from values of @minuend_type.
3949 *
3950 * Subtract functions should be registered at startup before any pipelines are
3951 * started, as gst_value_register_subtract_func() is not thread-safe and
3952 * cannot be used at the same time as gst_value_subtract().
3953 */
3954 void
3955 gst_value_register_subtract_func (GType minuend_type, GType subtrahend_type,
3956 GstValueSubtractFunc func)
3957 {
3958 GstValueSubtractInfo info;
3960 /* one type must be unfixed, other subtractions can be done as comparisons */
3961 g_return_if_fail (!gst_type_is_fixed (minuend_type)
3962 || !gst_type_is_fixed (subtrahend_type));
3964 info.minuend = minuend_type;
3965 info.subtrahend = subtrahend_type;
3966 info.func = func;
3968 g_array_append_val (gst_value_subtract_funcs, info);
3969 }
3971 /**
3972 * gst_value_register:
3973 * @table: structure containing functions to register
3974 *
3975 * Registers functions to perform calculations on #GValue items of a given
3976 * type. Each type can only be added once.
3977 */
3978 void
3979 gst_value_register (const GstValueTable * table)
3980 {
3981 GstValueTable *found;
3983 g_return_if_fail (table != NULL);
3985 g_array_append_val (gst_value_table, *table);
3987 found = gst_value_hash_lookup_type (table->type);
3988 if (found)
3989 g_warning ("adding type %s multiple times", g_type_name (table->type));
3991 /* FIXME: we're not really doing the const justice, we assume the table is
3992 * static */
3993 gst_value_hash_add_type (table->type, table);
3994 }
3996 /**
3997 * gst_value_init_and_copy:
3998 * @dest: (out caller-allocates): the target value
3999 * @src: the source value
4000 *
4001 * Initialises the target value to be of the same type as source and then copies
4002 * the contents from source to target.
4003 */
4004 void
4005 gst_value_init_and_copy (GValue * dest, const GValue * src)
4006 {
4007 g_return_if_fail (G_IS_VALUE (src));
4008 g_return_if_fail (dest != NULL);
4010 g_value_init (dest, G_VALUE_TYPE (src));
4011 g_value_copy (src, dest);
4012 }
4014 /**
4015 * gst_value_serialize:
4016 * @value: a #GValue to serialize
4017 *
4018 * tries to transform the given @value into a string representation that allows
4019 * getting back this string later on using gst_value_deserialize().
4020 *
4021 * Free-function: g_free
4022 *
4023 * Returns: (transfer full): the serialization for @value or NULL if none exists
4024 */
4025 gchar *
4026 gst_value_serialize (const GValue * value)
4027 {
4028 guint i, len;
4029 GValue s_val = { 0 };
4030 GstValueTable *table, *best;
4031 gchar *s;
4032 GType type;
4034 g_return_val_if_fail (G_IS_VALUE (value), NULL);
4036 type = G_VALUE_TYPE (value);
4038 best = gst_value_hash_lookup_type (type);
4040 if (G_UNLIKELY (!best || !best->serialize)) {
4041 len = gst_value_table->len;
4042 best = NULL;
4043 for (i = 0; i < len; i++) {
4044 table = &g_array_index (gst_value_table, GstValueTable, i);
4045 if (table->serialize && g_type_is_a (type, table->type)) {
4046 if (!best || g_type_is_a (table->type, best->type))
4047 best = table;
4048 }
4049 }
4050 }
4051 if (G_LIKELY (best))
4052 return best->serialize (value);
4054 g_value_init (&s_val, G_TYPE_STRING);
4055 if (g_value_transform (value, &s_val)) {
4056 s = gst_string_wrap (g_value_get_string (&s_val));
4057 } else {
4058 s = NULL;
4059 }
4060 g_value_unset (&s_val);
4062 return s;
4063 }
4065 /**
4066 * gst_value_deserialize:
4067 * @dest: (out caller-allocates): #GValue to fill with contents of
4068 * deserialization
4069 * @src: string to deserialize
4070 *
4071 * Tries to deserialize a string into the type specified by the given GValue.
4072 * If the operation succeeds, TRUE is returned, FALSE otherwise.
4073 *
4074 * Returns: TRUE on success
4075 */
4076 gboolean
4077 gst_value_deserialize (GValue * dest, const gchar * src)
4078 {
4079 GstValueTable *table, *best;
4080 guint i, len;
4081 GType type;
4083 g_return_val_if_fail (src != NULL, FALSE);
4084 g_return_val_if_fail (G_IS_VALUE (dest), FALSE);
4086 type = G_VALUE_TYPE (dest);
4088 best = gst_value_hash_lookup_type (type);
4089 if (G_UNLIKELY (!best || !best->deserialize)) {
4090 len = gst_value_table->len;
4091 best = NULL;
4092 for (i = 0; i < len; i++) {
4093 table = &g_array_index (gst_value_table, GstValueTable, i);
4094 if (table->deserialize && g_type_is_a (type, table->type)) {
4095 if (!best || g_type_is_a (table->type, best->type))
4096 best = table;
4097 }
4098 }
4099 }
4100 if (G_LIKELY (best))
4101 return best->deserialize (dest, src);
4103 return FALSE;
4104 }
4106 /**
4107 * gst_value_is_fixed:
4108 * @value: the #GValue to check
4109 *
4110 * Tests if the given GValue, if available in a GstStructure (or any other
4111 * container) contains a "fixed" (which means: one value) or an "unfixed"
4112 * (which means: multiple possible values, such as data lists or data
4113 * ranges) value.
4114 *
4115 * Returns: true if the value is "fixed".
4116 */
4118 gboolean
4119 gst_value_is_fixed (const GValue * value)
4120 {
4121 GType type;
4123 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
4125 type = G_VALUE_TYPE (value);
4127 /* the most common types are just basic plain glib types */
4128 if (type <= G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_GLIB_LAST)) {
4129 return TRUE;
4130 }
4132 if (type == GST_TYPE_ARRAY) {
4133 gint size, n;
4134 const GValue *kid;
4136 /* check recursively */
4137 size = gst_value_array_get_size (value);
4138 for (n = 0; n < size; n++) {
4139 kid = gst_value_array_get_value (value, n);
4140 if (!gst_value_is_fixed (kid))
4141 return FALSE;
4142 }
4143 return TRUE;
4144 }
4145 return gst_type_is_fixed (type);
4146 }
4148 /************
4149 * fraction *
4150 ************/
4152 /* helper functions */
4153 static void
4154 gst_value_init_fraction (GValue * value)
4155 {
4156 value->data[0].v_int = 0;
4157 value->data[1].v_int = 1;
4158 }
4160 static void
4161 gst_value_copy_fraction (const GValue * src_value, GValue * dest_value)
4162 {
4163 dest_value->data[0].v_int = src_value->data[0].v_int;
4164 dest_value->data[1].v_int = src_value->data[1].v_int;
4165 }
4167 static gchar *
4168 gst_value_collect_fraction (GValue * value, guint n_collect_values,
4169 GTypeCValue * collect_values, guint collect_flags)
4170 {
4171 if (n_collect_values != 2)
4172 return g_strdup_printf ("not enough value locations for `%s' passed",
4173 G_VALUE_TYPE_NAME (value));
4174 if (collect_values[1].v_int == 0)
4175 return g_strdup_printf ("passed '0' as denominator for `%s'",
4176 G_VALUE_TYPE_NAME (value));
4177 if (collect_values[0].v_int < -G_MAXINT)
4178 return
4179 g_strdup_printf
4180 ("passed value smaller than -G_MAXINT as numerator for `%s'",
4181 G_VALUE_TYPE_NAME (value));
4182 if (collect_values[1].v_int < -G_MAXINT)
4183 return
4184 g_strdup_printf
4185 ("passed value smaller than -G_MAXINT as denominator for `%s'",
4186 G_VALUE_TYPE_NAME (value));
4188 gst_value_set_fraction (value,
4189 collect_values[0].v_int, collect_values[1].v_int);
4191 return NULL;
4192 }
4194 static gchar *
4195 gst_value_lcopy_fraction (const GValue * value, guint n_collect_values,
4196 GTypeCValue * collect_values, guint collect_flags)
4197 {
4198 gint *numerator = collect_values[0].v_pointer;
4199 gint *denominator = collect_values[1].v_pointer;
4201 if (!numerator)
4202 return g_strdup_printf ("numerator for `%s' passed as NULL",
4203 G_VALUE_TYPE_NAME (value));
4204 if (!denominator)
4205 return g_strdup_printf ("denominator for `%s' passed as NULL",
4206 G_VALUE_TYPE_NAME (value));
4208 *numerator = value->data[0].v_int;
4209 *denominator = value->data[1].v_int;
4211 return NULL;
4212 }
4214 /**
4215 * gst_value_set_fraction:
4216 * @value: a GValue initialized to #GST_TYPE_FRACTION
4217 * @numerator: the numerator of the fraction
4218 * @denominator: the denominator of the fraction
4219 *
4220 * Sets @value to the fraction specified by @numerator over @denominator.
4221 * The fraction gets reduced to the smallest numerator and denominator,
4222 * and if necessary the sign is moved to the numerator.
4223 */
4224 void
4225 gst_value_set_fraction (GValue * value, gint numerator, gint denominator)
4226 {
4227 gint gcd = 0;
4229 g_return_if_fail (GST_VALUE_HOLDS_FRACTION (value));
4230 g_return_if_fail (denominator != 0);
4231 g_return_if_fail (denominator >= -G_MAXINT);
4232 g_return_if_fail (numerator >= -G_MAXINT);
4234 /* normalize sign */
4235 if (denominator < 0) {
4236 numerator = -numerator;
4237 denominator = -denominator;
4238 }
4240 /* check for reduction */
4241 gcd = gst_util_greatest_common_divisor (numerator, denominator);
4242 if (gcd) {
4243 numerator /= gcd;
4244 denominator /= gcd;
4245 }
4247 g_assert (denominator > 0);
4249 value->data[0].v_int = numerator;
4250 value->data[1].v_int = denominator;
4251 }
4253 /**
4254 * gst_value_get_fraction_numerator:
4255 * @value: a GValue initialized to #GST_TYPE_FRACTION
4256 *
4257 * Gets the numerator of the fraction specified by @value.
4258 *
4259 * Returns: the numerator of the fraction.
4260 */
4261 gint
4262 gst_value_get_fraction_numerator (const GValue * value)
4263 {
4264 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (value), 0);
4266 return value->data[0].v_int;
4267 }
4269 /**
4270 * gst_value_get_fraction_denominator:
4271 * @value: a GValue initialized to #GST_TYPE_FRACTION
4272 *
4273 * Gets the denominator of the fraction specified by @value.
4274 *
4275 * Returns: the denominator of the fraction.
4276 */
4277 gint
4278 gst_value_get_fraction_denominator (const GValue * value)
4279 {
4280 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (value), 1);
4282 return value->data[1].v_int;
4283 }
4285 /**
4286 * gst_value_fraction_multiply:
4287 * @product: a GValue initialized to #GST_TYPE_FRACTION
4288 * @factor1: a GValue initialized to #GST_TYPE_FRACTION
4289 * @factor2: a GValue initialized to #GST_TYPE_FRACTION
4290 *
4291 * Multiplies the two #GValue items containing a #GST_TYPE_FRACTION and sets
4292 * @product to the product of the two fractions.
4293 *
4294 * Returns: FALSE in case of an error (like integer overflow), TRUE otherwise.
4295 */
4296 gboolean
4297 gst_value_fraction_multiply (GValue * product, const GValue * factor1,
4298 const GValue * factor2)
4299 {
4300 gint n1, n2, d1, d2;
4301 gint res_n, res_d;
4303 g_return_val_if_fail (product != NULL, FALSE);
4304 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (factor1), FALSE);
4305 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (factor2), FALSE);
4307 n1 = factor1->data[0].v_int;
4308 n2 = factor2->data[0].v_int;
4309 d1 = factor1->data[1].v_int;
4310 d2 = factor2->data[1].v_int;
4312 if (!gst_util_fraction_multiply (n1, d1, n2, d2, &res_n, &res_d))
4313 return FALSE;
4315 gst_value_set_fraction (product, res_n, res_d);
4317 return TRUE;
4318 }
4320 /**
4321 * gst_value_fraction_subtract:
4322 * @dest: a GValue initialized to #GST_TYPE_FRACTION
4323 * @minuend: a GValue initialized to #GST_TYPE_FRACTION
4324 * @subtrahend: a GValue initialized to #GST_TYPE_FRACTION
4325 *
4326 * Subtracts the @subtrahend from the @minuend and sets @dest to the result.
4327 *
4328 * Returns: FALSE in case of an error (like integer overflow), TRUE otherwise.
4329 */
4330 gboolean
4331 gst_value_fraction_subtract (GValue * dest,
4332 const GValue * minuend, const GValue * subtrahend)
4333 {
4334 gint n1, n2, d1, d2;
4335 gint res_n, res_d;
4337 g_return_val_if_fail (dest != NULL, FALSE);
4338 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (minuend), FALSE);
4339 g_return_val_if_fail (GST_VALUE_HOLDS_FRACTION (subtrahend), FALSE);
4341 n1 = minuend->data[0].v_int;
4342 n2 = subtrahend->data[0].v_int;
4343 d1 = minuend->data[1].v_int;
4344 d2 = subtrahend->data[1].v_int;
4346 if (!gst_util_fraction_add (n1, d1, -n2, d2, &res_n, &res_d))
4347 return FALSE;
4348 gst_value_set_fraction (dest, res_n, res_d);
4350 return TRUE;
4351 }
4353 static gchar *
4354 gst_value_serialize_fraction (const GValue * value)
4355 {
4356 gint32 numerator = value->data[0].v_int;
4357 gint32 denominator = value->data[1].v_int;
4358 gboolean positive = TRUE;
4360 /* get the sign and make components absolute */
4361 if (numerator < 0) {
4362 numerator = -numerator;
4363 positive = !positive;
4364 }
4365 if (denominator < 0) {
4366 denominator = -denominator;
4367 positive = !positive;
4368 }
4370 return g_strdup_printf ("%s%d/%d",
4371 positive ? "" : "-", numerator, denominator);
4372 }
4374 static gboolean
4375 gst_value_deserialize_fraction (GValue * dest, const gchar * s)
4376 {
4377 gint num, den;
4378 gint num_chars;
4380 if (G_UNLIKELY (s == NULL))
4381 return FALSE;
4383 if (G_UNLIKELY (dest == NULL || !GST_VALUE_HOLDS_FRACTION (dest)))
4384 return FALSE;
4386 if (sscanf (s, "%d/%d%n", &num, &den, &num_chars) >= 2) {
4387 if (s[num_chars] != 0)
4388 return FALSE;
4389 if (den == 0)
4390 return FALSE;
4392 gst_value_set_fraction (dest, num, den);
4393 return TRUE;
4394 } else if (g_ascii_strcasecmp (s, "1/max") == 0) {
4395 gst_value_set_fraction (dest, 1, G_MAXINT);
4396 return TRUE;
4397 } else if (sscanf (s, "%d%n", &num, &num_chars) >= 1) {
4398 if (s[num_chars] != 0)
4399 return FALSE;
4400 gst_value_set_fraction (dest, num, 1);
4401 return TRUE;
4402 } else if (g_ascii_strcasecmp (s, "min") == 0) {
4403 gst_value_set_fraction (dest, -G_MAXINT, 1);
4404 return TRUE;
4405 } else if (g_ascii_strcasecmp (s, "max") == 0) {
4406 gst_value_set_fraction (dest, G_MAXINT, 1);
4407 return TRUE;
4408 }
4410 return FALSE;
4411 }
4413 static void
4414 gst_value_transform_fraction_string (const GValue * src_value,
4415 GValue * dest_value)
4416 {
4417 dest_value->data[0].v_pointer = gst_value_serialize_fraction (src_value);
4418 }
4420 static void
4421 gst_value_transform_string_fraction (const GValue * src_value,
4422 GValue * dest_value)
4423 {
4424 if (!gst_value_deserialize_fraction (dest_value,
4425 src_value->data[0].v_pointer))
4426 /* If the deserialize fails, ensure we leave the fraction in a
4427 * valid, if incorrect, state */
4428 gst_value_set_fraction (dest_value, 0, 1);
4429 }
4431 static void
4432 gst_value_transform_double_fraction (const GValue * src_value,
4433 GValue * dest_value)
4434 {
4435 gdouble src = g_value_get_double (src_value);
4436 gint n, d;
4438 gst_util_double_to_fraction (src, &n, &d);
4439 gst_value_set_fraction (dest_value, n, d);
4440 }
4442 static void
4443 gst_value_transform_float_fraction (const GValue * src_value,
4444 GValue * dest_value)
4445 {
4446 gfloat src = g_value_get_float (src_value);
4447 gint n, d;
4449 gst_util_double_to_fraction (src, &n, &d);
4450 gst_value_set_fraction (dest_value, n, d);
4451 }
4453 static void
4454 gst_value_transform_fraction_double (const GValue * src_value,
4455 GValue * dest_value)
4456 {
4457 dest_value->data[0].v_double = ((double) src_value->data[0].v_int) /
4458 ((double) src_value->data[1].v_int);
4459 }
4461 static void
4462 gst_value_transform_fraction_float (const GValue * src_value,
4463 GValue * dest_value)
4464 {
4465 dest_value->data[0].v_float = ((float) src_value->data[0].v_int) /
4466 ((float) src_value->data[1].v_int);
4467 }
4469 static gint
4470 gst_value_compare_fraction (const GValue * value1, const GValue * value2)
4471 {
4472 gint n1, n2;
4473 gint d1, d2;
4474 gint ret;
4476 n1 = value1->data[0].v_int;
4477 n2 = value2->data[0].v_int;
4478 d1 = value1->data[1].v_int;
4479 d2 = value2->data[1].v_int;
4481 /* fractions are reduced when set, so we can quickly see if they're equal */
4482 if (n1 == n2 && d1 == d2)
4483 return GST_VALUE_EQUAL;
4485 if (d1 == 0 && d2 == 0)
4486 return GST_VALUE_UNORDERED;
4487 else if (d1 == 0)
4488 return GST_VALUE_GREATER_THAN;
4489 else if (d2 == 0)
4490 return GST_VALUE_LESS_THAN;
4492 ret = gst_util_fraction_compare (n1, d1, n2, d2);
4493 if (ret == -1)
4494 return GST_VALUE_LESS_THAN;
4495 else if (ret == 1)
4496 return GST_VALUE_GREATER_THAN;
4498 /* Equality can't happen here because we check for that
4499 * first already */
4500 g_return_val_if_reached (GST_VALUE_UNORDERED);
4501 }
4503 /*********
4504 * GDate *
4505 *********/
4507 /**
4508 * gst_value_set_date:
4509 * @value: a GValue initialized to GST_TYPE_DATE
4510 * @date: the date to set the value to
4511 *
4512 * Sets the contents of @value to correspond to @date. The actual
4513 * #GDate structure is copied before it is used.
4514 */
4515 void
4516 gst_value_set_date (GValue * value, const GDate * date)
4517 {
4518 g_return_if_fail (G_VALUE_TYPE (value) == GST_TYPE_DATE);
4519 g_return_if_fail (g_date_valid (date));
4521 g_value_set_boxed (value, date);
4522 }
4524 /**
4525 * gst_value_get_date:
4526 * @value: a GValue initialized to GST_TYPE_DATE
4527 *
4528 * Gets the contents of @value.
4529 *
4530 * Returns: (transfer none): the contents of @value
4531 */
4532 const GDate *
4533 gst_value_get_date (const GValue * value)
4534 {
4535 g_return_val_if_fail (G_VALUE_TYPE (value) == GST_TYPE_DATE, NULL);
4537 return (const GDate *) g_value_get_boxed (value);
4538 }
4540 static gpointer
4541 gst_date_copy (gpointer boxed)
4542 {
4543 const GDate *date = (const GDate *) boxed;
4545 if (!g_date_valid (date)) {
4546 GST_WARNING ("invalid GDate");
4547 return NULL;
4548 }
4550 return g_date_new_julian (g_date_get_julian (date));
4551 }
4553 static gint
4554 gst_value_compare_date (const GValue * value1, const GValue * value2)
4555 {
4556 const GDate *date1 = (const GDate *) g_value_get_boxed (value1);
4557 const GDate *date2 = (const GDate *) g_value_get_boxed (value2);
4558 guint32 j1, j2;
4560 if (date1 == date2)
4561 return GST_VALUE_EQUAL;
4563 if ((date1 == NULL || !g_date_valid (date1))
4564 && (date2 != NULL && g_date_valid (date2))) {
4565 return GST_VALUE_LESS_THAN;
4566 }
4568 if ((date2 == NULL || !g_date_valid (date2))
4569 && (date1 != NULL && g_date_valid (date1))) {
4570 return GST_VALUE_GREATER_THAN;
4571 }
4573 if (date1 == NULL || date2 == NULL || !g_date_valid (date1)
4574 || !g_date_valid (date2)) {
4575 return GST_VALUE_UNORDERED;
4576 }
4578 j1 = g_date_get_julian (date1);
4579 j2 = g_date_get_julian (date2);
4581 if (j1 == j2)
4582 return GST_VALUE_EQUAL;
4583 else if (j1 < j2)
4584 return GST_VALUE_LESS_THAN;
4585 else
4586 return GST_VALUE_GREATER_THAN;
4587 }
4589 static gchar *
4590 gst_value_serialize_date (const GValue * val)
4591 {
4592 const GDate *date = (const GDate *) g_value_get_boxed (val);
4594 if (date == NULL || !g_date_valid (date))
4595 return g_strdup ("9999-99-99");
4597 return g_strdup_printf ("%04u-%02u-%02u", g_date_get_year (date),
4598 g_date_get_month (date), g_date_get_day (date));
4599 }
4601 static gboolean
4602 gst_value_deserialize_date (GValue * dest, const gchar * s)
4603 {
4604 guint year, month, day;
4606 if (!s || sscanf (s, "%04u-%02u-%02u", &year, &month, &day) != 3)
4607 return FALSE;
4609 if (!g_date_valid_dmy (day, month, year))
4610 return FALSE;
4612 g_value_take_boxed (dest, g_date_new_dmy (day, month, year));
4613 return TRUE;
4614 }
4616 /*************
4617 * GstDateTime *
4618 *************/
4620 static gint
4621 gst_value_compare_date_time (const GValue * value1, const GValue * value2)
4622 {
4623 const GstDateTime *date1 = (const GstDateTime *) g_value_get_boxed (value1);
4624 const GstDateTime *date2 = (const GstDateTime *) g_value_get_boxed (value2);
4625 gint ret;
4627 if (date1 == date2)
4628 return GST_VALUE_EQUAL;
4630 if ((date1 == NULL) && (date2 != NULL)) {
4631 return GST_VALUE_LESS_THAN;
4632 }
4633 if ((date2 == NULL) && (date1 != NULL)) {
4634 return GST_VALUE_LESS_THAN;
4635 }
4637 ret = priv_gst_date_time_compare (date1, date2);
4639 if (ret == 0)
4640 return GST_VALUE_EQUAL;
4641 else if (ret < 0)
4642 return GST_VALUE_LESS_THAN;
4643 else
4644 return GST_VALUE_GREATER_THAN;
4645 }
4647 static gchar *
4648 gst_value_serialize_date_time (const GValue * val)
4649 {
4650 GstDateTime *date = (GstDateTime *) g_value_get_boxed (val);
4651 gfloat offset;
4652 gint tzhour, tzminute;
4654 if (date == NULL)
4655 return g_strdup ("null");
4657 offset = gst_date_time_get_time_zone_offset (date);
4659 tzhour = (gint) ABS (offset);
4660 tzminute = (gint) ((ABS (offset) - tzhour) * 60);
4662 return g_strdup_printf ("\"%04d-%02d-%02dT%02d:%02d:%02d.%06d"
4663 "%c%02d%02d\"", gst_date_time_get_year (date),
4664 gst_date_time_get_month (date), gst_date_time_get_day (date),
4665 gst_date_time_get_hour (date), gst_date_time_get_minute (date),
4666 gst_date_time_get_second (date), gst_date_time_get_microsecond (date),
4667 offset >= 0 ? '+' : '-', tzhour, tzminute);
4668 }
4670 static gboolean
4671 gst_value_deserialize_date_time (GValue * dest, const gchar * s)
4672 {
4673 gint year, month, day, hour, minute, second, usecond;
4674 gchar signal;
4675 gint offset = 0;
4676 gfloat tzoffset = 0;
4677 gint ret;
4679 if (!s || strcmp (s, "null") == 0) {
4680 return FALSE;
4681 }
4683 ret = sscanf (s, "%04d-%02d-%02dT%02d:%02d:%02d.%06d%c%04d",
4684 &year, &month, &day, &hour, &minute, &second, &usecond, &signal, &offset);
4685 if (ret >= 9) {
4686 tzoffset = (offset / 100) + ((offset % 100) / 60.0);
4687 if (signal == '-')
4688 tzoffset = -tzoffset;
4689 } else
4690 return FALSE;
4692 g_value_take_boxed (dest, gst_date_time_new (tzoffset, year, month, day, hour,
4693 minute, second + (usecond / 1000000.0)));
4694 return TRUE;
4695 }
4697 static void
4698 gst_value_transform_date_string (const GValue * src_value, GValue * dest_value)
4699 {
4700 dest_value->data[0].v_pointer = gst_value_serialize_date (src_value);
4701 }
4703 static void
4704 gst_value_transform_string_date (const GValue * src_value, GValue * dest_value)
4705 {
4706 gst_value_deserialize_date (dest_value, src_value->data[0].v_pointer);
4707 }
4709 static void
4710 gst_value_transform_object_string (const GValue * src_value,
4711 GValue * dest_value)
4712 {
4713 GstObject *obj;
4714 gchar *str;
4716 obj = g_value_get_object (src_value);
4717 if (obj) {
4718 str =
4719 g_strdup_printf ("(%s) %s", G_OBJECT_TYPE_NAME (obj),
4720 GST_OBJECT_NAME (obj));
4721 } else {
4722 str = g_strdup ("NULL");
4723 }
4725 dest_value->data[0].v_pointer = str;
4726 }
4728 static GTypeInfo _info = {
4729 0,
4730 NULL,
4731 NULL,
4732 NULL,
4733 NULL,
4734 NULL,
4735 0,
4736 0,
4737 NULL,
4738 NULL,
4739 };
4741 static GTypeFundamentalInfo _finfo = {
4742 0
4743 };
4745 #define FUNC_VALUE_GET_TYPE(type, name) \
4746 GType gst_ ## type ## _get_type (void) \
4747 { \
4748 static volatile GType gst_ ## type ## _type = 0; \
4749 \
4750 if (g_once_init_enter (&gst_ ## type ## _type)) { \
4751 GType _type; \
4752 _info.value_table = & _gst_ ## type ## _value_table; \
4753 _type = g_type_register_fundamental ( \
4754 g_type_fundamental_next (), \
4755 name, &_info, &_finfo, 0); \
4756 g_once_init_leave(&gst_ ## type ## _type, _type); \
4757 } \
4758 \
4759 return gst_ ## type ## _type; \
4760 }
4762 static const GTypeValueTable _gst_fourcc_value_table = {
4763 gst_value_init_fourcc,
4764 NULL,
4765 gst_value_copy_fourcc,
4766 NULL,
4767 (char *) "i",
4768 gst_value_collect_fourcc,
4769 (char *) "p",
4770 gst_value_lcopy_fourcc
4771 };
4773 FUNC_VALUE_GET_TYPE (fourcc, "GstFourcc");
4775 static const GTypeValueTable _gst_int_range_value_table = {
4776 gst_value_init_int_range,
4777 NULL,
4778 gst_value_copy_int_range,
4779 NULL,
4780 (char *) "ii",
4781 gst_value_collect_int_range,
4782 (char *) "pp",
4783 gst_value_lcopy_int_range
4784 };
4786 FUNC_VALUE_GET_TYPE (int_range, "GstIntRange");
4788 static const GTypeValueTable _gst_int64_range_value_table = {
4789 gst_value_init_int64_range,
4790 NULL,
4791 gst_value_copy_int64_range,
4792 NULL,
4793 (char *) "qq",
4794 gst_value_collect_int64_range,
4795 (char *) "pp",
4796 gst_value_lcopy_int64_range
4797 };
4799 FUNC_VALUE_GET_TYPE (int64_range, "GstInt64Range");
4801 static const GTypeValueTable _gst_double_range_value_table = {
4802 gst_value_init_double_range,
4803 NULL,
4804 gst_value_copy_double_range,
4805 NULL,
4806 (char *) "dd",
4807 gst_value_collect_double_range,
4808 (char *) "pp",
4809 gst_value_lcopy_double_range
4810 };
4812 FUNC_VALUE_GET_TYPE (double_range, "GstDoubleRange");
4814 static const GTypeValueTable _gst_fraction_range_value_table = {
4815 gst_value_init_fraction_range,
4816 gst_value_free_fraction_range,
4817 gst_value_copy_fraction_range,
4818 NULL,
4819 (char *) "iiii",
4820 gst_value_collect_fraction_range,
4821 (char *) "pppp",
4822 gst_value_lcopy_fraction_range
4823 };
4825 FUNC_VALUE_GET_TYPE (fraction_range, "GstFractionRange");
4827 static const GTypeValueTable _gst_value_list_value_table = {
4828 gst_value_init_list_or_array,
4829 gst_value_free_list_or_array,
4830 gst_value_copy_list_or_array,
4831 gst_value_list_or_array_peek_pointer,
4832 (char *) "p",
4833 gst_value_collect_list_or_array,
4834 (char *) "p",
4835 gst_value_lcopy_list_or_array
4836 };
4838 FUNC_VALUE_GET_TYPE (value_list, "GstValueList");
4840 static const GTypeValueTable _gst_value_array_value_table = {
4841 gst_value_init_list_or_array,
4842 gst_value_free_list_or_array,
4843 gst_value_copy_list_or_array,
4844 gst_value_list_or_array_peek_pointer,
4845 (char *) "p",
4846 gst_value_collect_list_or_array,
4847 (char *) "p",
4848 gst_value_lcopy_list_or_array
4849 };
4851 FUNC_VALUE_GET_TYPE (value_array, "GstValueArray");
4853 static const GTypeValueTable _gst_fraction_value_table = {
4854 gst_value_init_fraction,
4855 NULL,
4856 gst_value_copy_fraction,
4857 NULL,
4858 (char *) "ii",
4859 gst_value_collect_fraction,
4860 (char *) "pp",
4861 gst_value_lcopy_fraction
4862 };
4864 FUNC_VALUE_GET_TYPE (fraction, "GstFraction");
4867 GType
4868 gst_date_get_type (void)
4869 {
4870 static GType gst_date_type = 0;
4872 if (G_UNLIKELY (gst_date_type == 0)) {
4873 /* FIXME 0.11: we require GLib 2.8 already
4874 * Not using G_TYPE_DATE here on purpose, even if we could
4875 * if GLIB_CHECK_VERSION(2,8,0) was true: we don't want the
4876 * serialised strings to have different type strings depending
4877 * on what version is used, so FIXME when we require GLib-2.8 */
4878 gst_date_type = g_boxed_type_register_static ("GstDate",
4879 (GBoxedCopyFunc) gst_date_copy, (GBoxedFreeFunc) g_date_free);
4880 }
4882 return gst_date_type;
4883 }
4885 GType
4886 gst_date_time_get_type (void)
4887 {
4888 static GType gst_date_time_type = 0;
4890 if (G_UNLIKELY (gst_date_time_type == 0)) {
4891 gst_date_time_type = g_boxed_type_register_static ("GstDateTime",
4892 (GBoxedCopyFunc) gst_date_time_ref,
4893 (GBoxedFreeFunc) gst_date_time_unref);
4894 }
4896 return gst_date_time_type;
4897 }
4900 void
4901 _gst_value_initialize (void)
4902 {
4903 gst_value_table = g_array_new (FALSE, FALSE, sizeof (GstValueTable));
4904 gst_value_hash = g_hash_table_new (NULL, NULL);
4905 gst_value_union_funcs = g_array_new (FALSE, FALSE,
4906 sizeof (GstValueUnionInfo));
4907 gst_value_intersect_funcs = g_array_new (FALSE, FALSE,
4908 sizeof (GstValueIntersectInfo));
4909 gst_value_subtract_funcs = g_array_new (FALSE, FALSE,
4910 sizeof (GstValueSubtractInfo));
4912 {
4913 static GstValueTable gst_value = {
4914 0,
4915 gst_value_compare_fourcc,
4916 gst_value_serialize_fourcc,
4917 gst_value_deserialize_fourcc,
4918 };
4920 gst_value.type = gst_fourcc_get_type ();
4921 gst_value_register (&gst_value);
4922 }
4924 {
4925 static GstValueTable gst_value = {
4926 0,
4927 gst_value_compare_int_range,
4928 gst_value_serialize_int_range,
4929 gst_value_deserialize_int_range,
4930 };
4932 gst_value.type = gst_int_range_get_type ();
4933 gst_value_register (&gst_value);
4934 }
4936 {
4937 static GstValueTable gst_value = {
4938 0,
4939 gst_value_compare_int64_range,
4940 gst_value_serialize_int64_range,
4941 gst_value_deserialize_int64_range,
4942 };
4944 gst_value.type = gst_int64_range_get_type ();
4945 gst_value_register (&gst_value);
4946 }
4948 {
4949 static GstValueTable gst_value = {
4950 0,
4951 gst_value_compare_double_range,
4952 gst_value_serialize_double_range,
4953 gst_value_deserialize_double_range,
4954 };
4956 gst_value.type = gst_double_range_get_type ();
4957 gst_value_register (&gst_value);
4958 }
4960 {
4961 static GstValueTable gst_value = {
4962 0,
4963 gst_value_compare_fraction_range,
4964 gst_value_serialize_fraction_range,
4965 gst_value_deserialize_fraction_range,
4966 };
4968 gst_value.type = gst_fraction_range_get_type ();
4969 gst_value_register (&gst_value);
4970 }
4972 {
4973 static GstValueTable gst_value = {
4974 0,
4975 gst_value_compare_list,
4976 gst_value_serialize_list,
4977 gst_value_deserialize_list,
4978 };
4980 gst_value.type = gst_value_list_get_type ();
4981 gst_value_register (&gst_value);
4982 }
4984 {
4985 static GstValueTable gst_value = {
4986 0,
4987 gst_value_compare_array,
4988 gst_value_serialize_array,
4989 gst_value_deserialize_array,
4990 };
4992 gst_value.type = gst_value_array_get_type ();
4993 gst_value_register (&gst_value);
4994 }
4996 {
4997 #if 0
4998 static const GTypeValueTable value_table = {
4999 gst_value_init_buffer,
5000 NULL,
5001 gst_value_copy_buffer,
5002 NULL,
5003 "i",
5004 NULL, /*gst_value_collect_buffer, */
5005 "p",
5006 NULL /*gst_value_lcopy_buffer */
5007 };
5008 #endif
5009 static GstValueTable gst_value = {
5010 0,
5011 gst_value_compare_buffer,
5012 gst_value_serialize_buffer,
5013 gst_value_deserialize_buffer,
5014 };
5016 gst_value.type = GST_TYPE_BUFFER;
5017 gst_value_register (&gst_value);
5018 }
5019 {
5020 static GstValueTable gst_value = {
5021 0,
5022 gst_value_compare_fraction,
5023 gst_value_serialize_fraction,
5024 gst_value_deserialize_fraction,
5025 };
5027 gst_value.type = gst_fraction_get_type ();
5028 gst_value_register (&gst_value);
5029 }
5030 {
5031 static GstValueTable gst_value = {
5032 0,
5033 NULL,
5034 gst_value_serialize_caps,
5035 gst_value_deserialize_caps,
5036 };
5038 gst_value.type = GST_TYPE_CAPS;
5039 gst_value_register (&gst_value);
5040 }
5041 {
5042 static GstValueTable gst_value = {
5043 0,
5044 NULL,
5045 gst_value_serialize_structure,
5046 gst_value_deserialize_structure,
5047 };
5049 gst_value.type = GST_TYPE_STRUCTURE;
5050 gst_value_register (&gst_value);
5051 }
5052 {
5053 static GstValueTable gst_value = {
5054 0,
5055 gst_value_compare_date,
5056 gst_value_serialize_date,
5057 gst_value_deserialize_date,
5058 };
5060 gst_value.type = gst_date_get_type ();
5061 gst_value_register (&gst_value);
5062 }
5063 {
5064 static GstValueTable gst_value = {
5065 0,
5066 gst_value_compare_date_time,
5067 gst_value_serialize_date_time,
5068 gst_value_deserialize_date_time,
5069 };
5071 gst_value.type = gst_date_time_get_type ();
5072 gst_value_register (&gst_value);
5073 }
5075 REGISTER_SERIALIZATION (G_TYPE_DOUBLE, double);
5076 REGISTER_SERIALIZATION (G_TYPE_FLOAT, float);
5078 REGISTER_SERIALIZATION (G_TYPE_STRING, string);
5079 REGISTER_SERIALIZATION (G_TYPE_BOOLEAN, boolean);
5080 REGISTER_SERIALIZATION (G_TYPE_ENUM, enum);
5082 REGISTER_SERIALIZATION (G_TYPE_FLAGS, flags);
5084 REGISTER_SERIALIZATION (G_TYPE_INT, int);
5086 REGISTER_SERIALIZATION (G_TYPE_INT64, int64);
5087 REGISTER_SERIALIZATION (G_TYPE_LONG, long);
5089 REGISTER_SERIALIZATION (G_TYPE_UINT, uint);
5090 REGISTER_SERIALIZATION (G_TYPE_UINT64, uint64);
5091 REGISTER_SERIALIZATION (G_TYPE_ULONG, ulong);
5093 REGISTER_SERIALIZATION (G_TYPE_UCHAR, uchar);
5095 g_value_register_transform_func (GST_TYPE_FOURCC, G_TYPE_STRING,
5096 gst_value_transform_fourcc_string);
5097 g_value_register_transform_func (GST_TYPE_INT_RANGE, G_TYPE_STRING,
5098 gst_value_transform_int_range_string);
5099 g_value_register_transform_func (GST_TYPE_INT64_RANGE, G_TYPE_STRING,
5100 gst_value_transform_int64_range_string);
5101 g_value_register_transform_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_STRING,
5102 gst_value_transform_double_range_string);
5103 g_value_register_transform_func (GST_TYPE_FRACTION_RANGE, G_TYPE_STRING,
5104 gst_value_transform_fraction_range_string);
5105 g_value_register_transform_func (GST_TYPE_LIST, G_TYPE_STRING,
5106 gst_value_transform_list_string);
5107 g_value_register_transform_func (GST_TYPE_ARRAY, G_TYPE_STRING,
5108 gst_value_transform_array_string);
5109 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_STRING,
5110 gst_value_transform_fraction_string);
5111 g_value_register_transform_func (G_TYPE_STRING, GST_TYPE_FRACTION,
5112 gst_value_transform_string_fraction);
5113 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_DOUBLE,
5114 gst_value_transform_fraction_double);
5115 g_value_register_transform_func (GST_TYPE_FRACTION, G_TYPE_FLOAT,
5116 gst_value_transform_fraction_float);
5117 g_value_register_transform_func (G_TYPE_DOUBLE, GST_TYPE_FRACTION,
5118 gst_value_transform_double_fraction);
5119 g_value_register_transform_func (G_TYPE_FLOAT, GST_TYPE_FRACTION,
5120 gst_value_transform_float_fraction);
5121 g_value_register_transform_func (GST_TYPE_DATE, G_TYPE_STRING,
5122 gst_value_transform_date_string);
5123 g_value_register_transform_func (G_TYPE_STRING, GST_TYPE_DATE,
5124 gst_value_transform_string_date);
5125 g_value_register_transform_func (GST_TYPE_OBJECT, G_TYPE_STRING,
5126 gst_value_transform_object_string);
5128 gst_value_register_intersect_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5129 gst_value_intersect_int_int_range);
5130 gst_value_register_intersect_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5131 gst_value_intersect_int_range_int_range);
5132 gst_value_register_intersect_func (G_TYPE_INT64, GST_TYPE_INT64_RANGE,
5133 gst_value_intersect_int64_int64_range);
5134 gst_value_register_intersect_func (GST_TYPE_INT64_RANGE, GST_TYPE_INT64_RANGE,
5135 gst_value_intersect_int64_range_int64_range);
5136 gst_value_register_intersect_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
5137 gst_value_intersect_double_double_range);
5138 gst_value_register_intersect_func (GST_TYPE_DOUBLE_RANGE,
5139 GST_TYPE_DOUBLE_RANGE, gst_value_intersect_double_range_double_range);
5140 gst_value_register_intersect_func (GST_TYPE_ARRAY,
5141 GST_TYPE_ARRAY, gst_value_intersect_array);
5142 gst_value_register_intersect_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5143 gst_value_intersect_fraction_fraction_range);
5144 gst_value_register_intersect_func (GST_TYPE_FRACTION_RANGE,
5145 GST_TYPE_FRACTION_RANGE,
5146 gst_value_intersect_fraction_range_fraction_range);
5148 gst_value_register_subtract_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5149 gst_value_subtract_int_int_range);
5150 gst_value_register_subtract_func (GST_TYPE_INT_RANGE, G_TYPE_INT,
5151 gst_value_subtract_int_range_int);
5152 gst_value_register_subtract_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5153 gst_value_subtract_int_range_int_range);
5154 gst_value_register_subtract_func (G_TYPE_INT64, GST_TYPE_INT64_RANGE,
5155 gst_value_subtract_int64_int64_range);
5156 gst_value_register_subtract_func (GST_TYPE_INT64_RANGE, G_TYPE_INT64,
5157 gst_value_subtract_int64_range_int64);
5158 gst_value_register_subtract_func (GST_TYPE_INT64_RANGE, GST_TYPE_INT64_RANGE,
5159 gst_value_subtract_int64_range_int64_range);
5160 gst_value_register_subtract_func (G_TYPE_DOUBLE, GST_TYPE_DOUBLE_RANGE,
5161 gst_value_subtract_double_double_range);
5162 gst_value_register_subtract_func (GST_TYPE_DOUBLE_RANGE, G_TYPE_DOUBLE,
5163 gst_value_subtract_double_range_double);
5164 gst_value_register_subtract_func (GST_TYPE_DOUBLE_RANGE,
5165 GST_TYPE_DOUBLE_RANGE, gst_value_subtract_double_range_double_range);
5167 gst_value_register_subtract_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5168 gst_value_subtract_fraction_fraction_range);
5169 gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE, GST_TYPE_FRACTION,
5170 gst_value_subtract_fraction_range_fraction);
5171 gst_value_register_subtract_func (GST_TYPE_FRACTION_RANGE,
5172 GST_TYPE_FRACTION_RANGE,
5173 gst_value_subtract_fraction_range_fraction_range);
5175 /* see bug #317246, #64994, #65041 */
5176 {
5177 volatile GType date_type = G_TYPE_DATE;
5179 g_type_name (date_type);
5180 }
5182 gst_value_register_union_func (G_TYPE_INT, GST_TYPE_INT_RANGE,
5183 gst_value_union_int_int_range);
5184 gst_value_register_union_func (GST_TYPE_INT_RANGE, GST_TYPE_INT_RANGE,
5185 gst_value_union_int_range_int_range);
5187 #if 0
5188 /* Implement these if needed */
5189 gst_value_register_union_func (GST_TYPE_FRACTION, GST_TYPE_FRACTION_RANGE,
5190 gst_value_union_fraction_fraction_range);
5191 gst_value_register_union_func (GST_TYPE_FRACTION_RANGE,
5192 GST_TYPE_FRACTION_RANGE, gst_value_union_fraction_range_fraction_range);
5193 #endif
5194 }