2 This file is part of PulseAudio.
4 Copyright 2011 Intel Corporation
5 Copyright 2011 Collabora Multimedia
6 Copyright 2011 Arun Raghavan <arun.raghavan@collabora.co.uk>
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2.1 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <pulse/internal.h>
31 #include <pulse/xmalloc.h>
33 #include <pulsecore/core-format.h>
34 #include <pulsecore/core-util.h>
35 #include <pulsecore/i18n.h>
36 #include <pulsecore/macro.h>
40 #define PA_JSON_MIN_KEY "min"
41 #define PA_JSON_MAX_KEY "max"
43 static int pa_format_info_prop_compatible(const char *one, const char *two);
45 static const char* const _encoding_str_table[]= {
46 [PA_ENCODING_PCM] = "pcm",
47 [PA_ENCODING_AC3_IEC61937] = "ac3-iec61937",
48 [PA_ENCODING_EAC3_IEC61937] = "eac3-iec61937",
49 [PA_ENCODING_MPEG_IEC61937] = "mpeg-iec61937",
50 [PA_ENCODING_DTS_IEC61937] = "dts-iec61937",
51 [PA_ENCODING_MPEG2_AAC_IEC61937] = "mpeg2-aac-iec61937",
52 [PA_ENCODING_ANY] = "any",
55 const char *pa_encoding_to_string(pa_encoding_t e) {
56 if (e < 0 || e >= PA_ENCODING_MAX)
59 return _encoding_str_table[e];
62 pa_encoding_t pa_encoding_from_string(const char *encoding) {
65 for (e = PA_ENCODING_ANY; e < PA_ENCODING_MAX; e++)
66 if (pa_streq(_encoding_str_table[e], encoding))
69 return PA_ENCODING_INVALID;
72 pa_format_info* pa_format_info_new(void) {
73 pa_format_info *f = pa_xnew(pa_format_info, 1);
75 f->encoding = PA_ENCODING_INVALID;
76 f->plist = pa_proplist_new();
81 pa_format_info* pa_format_info_copy(const pa_format_info *src) {
86 dest = pa_xnew(pa_format_info, 1);
88 dest->encoding = src->encoding;
91 dest->plist = pa_proplist_copy(src->plist);
98 void pa_format_info_free(pa_format_info *f) {
101 pa_proplist_free(f->plist);
105 int pa_format_info_valid(const pa_format_info *f) {
106 return (f->encoding >= 0 && f->encoding < PA_ENCODING_MAX && f->plist != NULL);
109 int pa_format_info_is_pcm(const pa_format_info *f) {
110 return f->encoding == PA_ENCODING_PCM;
113 char *pa_format_info_snprint(char *s, size_t l, const pa_format_info *f) {
122 if (!pa_format_info_valid(f))
123 pa_snprintf(s, l, _("(invalid)"));
125 tmp = pa_proplist_to_string_sep(f->plist, " ");
127 pa_snprintf(s, l, "%s, %s", pa_encoding_to_string(f->encoding), tmp);
129 pa_snprintf(s, l, "%s", pa_encoding_to_string(f->encoding));
136 pa_format_info* pa_format_info_from_string(const char *str) {
137 pa_format_info *f = pa_format_info_new();
138 char *encoding = NULL, *properties = NULL;
141 pos = strcspn(str, ",");
143 encoding = pa_xstrndup(str, pos);
144 f->encoding = pa_encoding_from_string(pa_strip(encoding));
145 if (f->encoding == PA_ENCODING_INVALID)
148 if (pos != strlen(str)) {
151 properties = pa_xstrdup(&str[pos+1]);
152 plist = pa_proplist_from_string(properties);
157 pa_proplist_free(f->plist);
165 pa_xfree(properties);
169 pa_format_info_free(f);
174 int pa_format_info_is_compatible(const pa_format_info *first, const pa_format_info *second) {
181 if (first->encoding != second->encoding)
184 while ((key = pa_proplist_iterate(first->plist, &state))) {
185 const char *value_one, *value_two;
187 value_one = pa_proplist_gets(first->plist, key);
188 value_two = pa_proplist_gets(second->plist, key);
190 if (!value_two || !pa_format_info_prop_compatible(value_one, value_two))
197 pa_format_info* pa_format_info_from_sample_spec(const pa_sample_spec *ss, const pa_channel_map *map) {
198 char cm[PA_CHANNEL_MAP_SNPRINT_MAX];
201 pa_assert(ss && pa_sample_spec_valid(ss));
202 pa_assert(!map || pa_channel_map_valid(map));
204 f = pa_format_info_new();
205 f->encoding = PA_ENCODING_PCM;
207 pa_format_info_set_sample_format(f, ss->format);
208 pa_format_info_set_rate(f, ss->rate);
209 pa_format_info_set_channels(f, ss->channels);
212 pa_channel_map_snprint(cm, sizeof(cm), map);
213 pa_format_info_set_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, cm);
219 /* For PCM streams */
220 int pa_format_info_to_sample_spec(const pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map) {
224 if (!pa_format_info_is_pcm(f))
225 return pa_format_info_to_sample_spec_fake(f, ss, map);
227 if (pa_format_info_get_sample_format(f, &ss->format) < 0)
228 return -PA_ERR_INVALID;
229 if (pa_format_info_get_rate(f, &ss->rate) < 0)
230 return -PA_ERR_INVALID;
231 if (pa_format_info_get_channels(f, &ss->channels) < 0)
232 return -PA_ERR_INVALID;
233 if (map && pa_format_info_get_channel_map(f, map) < 0)
234 return -PA_ERR_INVALID;
239 pa_prop_type_t pa_format_info_get_prop_type(const pa_format_info *f, const char *key) {
247 str = pa_proplist_gets(f->plist, key);
249 return PA_PROP_TYPE_INVALID;
251 o = json_tokener_parse(str);
253 return PA_PROP_TYPE_INVALID;
255 switch (json_object_get_type(o)) {
257 type = PA_PROP_TYPE_INT;
260 case json_type_string:
261 type = PA_PROP_TYPE_STRING;
264 case json_type_array:
265 if (json_object_array_length(o) == 0) {
266 /* Unlikely, but let's account for this anyway. We need at
267 * least one element to figure out the array type. */
268 type = PA_PROP_TYPE_INVALID;
272 o1 = json_object_array_get_idx(o, 1);
274 if (json_object_get_type(o1) == json_type_int)
275 type = PA_PROP_TYPE_INT_ARRAY;
276 else if (json_object_get_type(o1) == json_type_string)
277 type = PA_PROP_TYPE_STRING_ARRAY;
279 type = PA_PROP_TYPE_INVALID;
283 case json_type_object:
284 /* We actually know at this point that it's a int range, but let's
286 if (!json_object_object_get_ex(o, PA_JSON_MIN_KEY, NULL)) {
287 type = PA_PROP_TYPE_INVALID;
291 if (!json_object_object_get_ex(o, PA_JSON_MAX_KEY, NULL)) {
292 type = PA_PROP_TYPE_INVALID;
296 type = PA_PROP_TYPE_INT_RANGE;
300 type = PA_PROP_TYPE_INVALID;
308 int pa_format_info_get_prop_int(const pa_format_info *f, const char *key, int *v) {
316 str = pa_proplist_gets(f->plist, key);
318 return -PA_ERR_NOENTITY;
320 o = json_tokener_parse(str);
322 pa_log_debug("Failed to parse format info property '%s'.", key);
323 return -PA_ERR_INVALID;
326 if (json_object_get_type(o) != json_type_int) {
327 pa_log_debug("Format info property '%s' type is not int.", key);
329 return -PA_ERR_INVALID;
332 *v = json_object_get_int(o);
338 int pa_format_info_get_prop_int_range(const pa_format_info *f, const char *key, int *min, int *max) {
341 int ret = -PA_ERR_INVALID;
348 str = pa_proplist_gets(f->plist, key);
350 return -PA_ERR_NOENTITY;
352 o = json_tokener_parse(str);
354 pa_log_debug("Failed to parse format info property '%s'.", key);
355 return -PA_ERR_INVALID;
358 if (json_object_get_type(o) != json_type_object)
361 if (!json_object_object_get_ex(o, PA_JSON_MIN_KEY, &o1))
364 *min = json_object_get_int(o1);
366 if (!json_object_object_get_ex(o, PA_JSON_MAX_KEY, &o1))
369 *max = json_object_get_int(o1);
375 pa_log_debug("Format info property '%s' is not a valid int range.", key);
381 int pa_format_info_get_prop_int_array(const pa_format_info *f, const char *key, int **values, int *n_values) {
384 int i, ret = -PA_ERR_INVALID;
391 str = pa_proplist_gets(f->plist, key);
393 return -PA_ERR_NOENTITY;
395 o = json_tokener_parse(str);
397 pa_log_debug("Failed to parse format info property '%s'.", key);
398 return -PA_ERR_INVALID;
401 if (json_object_get_type(o) != json_type_array)
404 *n_values = json_object_array_length(o);
405 *values = pa_xnew(int, *n_values);
407 for (i = 0; i < *n_values; i++) {
408 o1 = json_object_array_get_idx(o, i);
410 if (json_object_get_type(o1) != json_type_int) {
414 (*values)[i] = json_object_get_int(o1);
421 pa_log_debug("Format info property '%s' is not a valid int array.", key);
427 int pa_format_info_get_prop_string(const pa_format_info *f, const char *key, char **v) {
428 const char *str = NULL;
435 str = pa_proplist_gets(f->plist, key);
437 return -PA_ERR_NOENTITY;
439 o = json_tokener_parse(str);
441 pa_log_debug("Failed to parse format info property '%s'.", key);
442 return -PA_ERR_INVALID;
445 if (json_object_get_type(o) != json_type_string) {
446 pa_log_debug("Format info property '%s' type is not string.", key);
448 return -PA_ERR_INVALID;
451 *v = pa_xstrdup(json_object_get_string(o));
457 int pa_format_info_get_prop_string_array(const pa_format_info *f, const char *key, char ***values, int *n_values) {
460 int i, ret = -PA_ERR_INVALID;
467 str = pa_proplist_gets(f->plist, key);
469 return -PA_ERR_NOENTITY;
471 o = json_tokener_parse(str);
473 pa_log_debug("Failed to parse format info property '%s'.", key);
474 return -PA_ERR_INVALID;
477 if (json_object_get_type(o) != json_type_array)
480 *n_values = json_object_array_length(o);
481 *values = pa_xnew(char *, *n_values);
483 for (i = 0; i < *n_values; i++) {
484 o1 = json_object_array_get_idx(o, i);
486 if (json_object_get_type(o1) != json_type_string) {
490 (*values)[i] = pa_xstrdup(json_object_get_string(o1));
497 pa_log_debug("Format info property '%s' is not a valid string array.", key);
503 void pa_format_info_free_string_array(char **values, int n_values) {
506 for (i = 0; i < n_values; i++)
512 void pa_format_info_set_sample_format(pa_format_info *f, pa_sample_format_t sf) {
513 pa_format_info_set_prop_string(f, PA_PROP_FORMAT_SAMPLE_FORMAT, pa_sample_format_to_string(sf));
516 void pa_format_info_set_rate(pa_format_info *f, int rate) {
517 pa_format_info_set_prop_int(f, PA_PROP_FORMAT_RATE, rate);
520 void pa_format_info_set_channels(pa_format_info *f, int channels) {
521 pa_format_info_set_prop_int(f, PA_PROP_FORMAT_CHANNELS, channels);
524 void pa_format_info_set_channel_map(pa_format_info *f, const pa_channel_map *map) {
525 char map_str[PA_CHANNEL_MAP_SNPRINT_MAX];
527 pa_channel_map_snprint(map_str, sizeof(map_str), map);
529 pa_format_info_set_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, map_str);
532 void pa_format_info_set_prop_int(pa_format_info *f, const char *key, int value) {
538 o = json_object_new_int(value);
540 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
545 void pa_format_info_set_prop_int_array(pa_format_info *f, const char *key, const int *values, int n_values) {
552 o = json_object_new_array();
554 for (i = 0; i < n_values; i++)
555 json_object_array_add(o, json_object_new_int(values[i]));
557 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
562 void pa_format_info_set_prop_int_range(pa_format_info *f, const char *key, int min, int max) {
568 o = json_object_new_object();
570 json_object_object_add(o, PA_JSON_MIN_KEY, json_object_new_int(min));
571 json_object_object_add(o, PA_JSON_MAX_KEY, json_object_new_int(max));
573 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
578 void pa_format_info_set_prop_string(pa_format_info *f, const char *key, const char *value) {
584 o = json_object_new_string(value);
586 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
591 void pa_format_info_set_prop_string_array(pa_format_info *f, const char *key, const char **values, int n_values) {
598 o = json_object_new_array();
600 for (i = 0; i < n_values; i++)
601 json_object_array_add(o, json_object_new_string(values[i]));
603 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
608 static bool pa_json_is_fixed_type(json_object *o) {
609 switch(json_object_get_type(o)) {
610 case json_type_object:
611 case json_type_array:
619 static int pa_json_value_equal(json_object *o1, json_object *o2) {
620 return (json_object_get_type(o1) == json_object_get_type(o2)) &&
621 pa_streq(json_object_to_json_string(o1), json_object_to_json_string(o2));
624 static int pa_format_info_prop_compatible(const char *one, const char *two) {
625 json_object *o1 = NULL, *o2 = NULL;
628 o1 = json_tokener_parse(one);
632 o2 = json_tokener_parse(two);
636 /* We don't deal with both values being non-fixed - just because there is no immediate need (FIXME) */
637 pa_return_val_if_fail(pa_json_is_fixed_type(o1) || pa_json_is_fixed_type(o2), false);
639 if (pa_json_is_fixed_type(o1) && pa_json_is_fixed_type(o2)) {
640 ret = pa_json_value_equal(o1, o2);
644 if (pa_json_is_fixed_type(o1)) {
645 json_object *tmp = o2;
650 /* o2 is now a fixed type, and o1 is not */
652 if (json_object_get_type(o1) == json_type_array) {
653 for (i = 0; i < json_object_array_length(o1); i++) {
654 if (pa_json_value_equal(json_object_array_get_idx(o1, i), o2)) {
659 } else if (json_object_get_type(o1) == json_type_object) {
660 /* o1 should be a range type */
662 json_object *o_min = NULL, *o_max = NULL;
664 if (json_object_get_type(o2) != json_type_int) {
665 /* We don't support non-integer ranges */
669 if (!json_object_object_get_ex(o1, PA_JSON_MIN_KEY, &o_min) ||
670 json_object_get_type(o_min) != json_type_int)
673 if (!json_object_object_get_ex(o1, PA_JSON_MAX_KEY, &o_max) ||
674 json_object_get_type(o_max) != json_type_int)
677 v = json_object_get_int(o2);
678 min = json_object_get_int(o_min);
679 max = json_object_get_int(o_max);
681 ret = v >= min && v <= max;
683 pa_log_warn("Got a format type that we don't support");