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-util.h>
34 #include <pulsecore/i18n.h>
35 #include <pulsecore/macro.h>
39 #define PA_JSON_MIN_KEY "min"
40 #define PA_JSON_MAX_KEY "max"
42 static int pa_format_info_prop_compatible(const char *one, const char *two);
44 static const char* const _encoding_str_table[]= {
45 [PA_ENCODING_PCM] = "pcm",
46 [PA_ENCODING_AC3_IEC61937] = "ac3-iec61937",
47 [PA_ENCODING_EAC3_IEC61937] = "eac3-iec61937",
48 [PA_ENCODING_MPEG_IEC61937] = "mpeg-iec61937",
49 [PA_ENCODING_DTS_IEC61937] = "dts-iec61937",
50 [PA_ENCODING_ANY] = "any",
53 const char *pa_encoding_to_string(pa_encoding_t e) {
54 if (e < 0 || e >= PA_ENCODING_MAX)
57 return _encoding_str_table[e];
60 pa_encoding_t pa_encoding_from_string(const char *encoding) {
63 for (e = PA_ENCODING_ANY; e < PA_ENCODING_MAX; e++)
64 if (pa_streq(_encoding_str_table[e], encoding))
67 return PA_ENCODING_INVALID;
70 pa_format_info* pa_format_info_new(void) {
71 pa_format_info *f = pa_xnew(pa_format_info, 1);
73 f->encoding = PA_ENCODING_INVALID;
74 f->plist = pa_proplist_new();
79 pa_format_info* pa_format_info_copy(const pa_format_info *src) {
84 dest = pa_xnew(pa_format_info, 1);
86 dest->encoding = src->encoding;
89 dest->plist = pa_proplist_copy(src->plist);
96 void pa_format_info_free(pa_format_info *f) {
99 pa_proplist_free(f->plist);
103 void pa_format_info_free2(pa_format_info *f, void *userdata) {
104 pa_format_info_free(f);
107 int pa_format_info_valid(const pa_format_info *f) {
108 return (f->encoding >= 0 && f->encoding < PA_ENCODING_MAX && f->plist != NULL);
111 int pa_format_info_is_pcm(const pa_format_info *f) {
112 return f->encoding == PA_ENCODING_PCM;
115 char *pa_format_info_snprint(char *s, size_t l, const pa_format_info *f) {
124 if (!pa_format_info_valid(f))
125 pa_snprintf(s, l, _("(invalid)"));
127 tmp = pa_proplist_to_string_sep(f->plist, " ");
129 pa_snprintf(s, l, "%s, %s", pa_encoding_to_string(f->encoding), tmp);
131 pa_snprintf(s, l, "%s", pa_encoding_to_string(f->encoding));
138 pa_format_info* pa_format_info_from_string(const char *str) {
139 pa_format_info *f = pa_format_info_new();
140 char *encoding = NULL, *properties = NULL;
143 pos = strcspn(str, ",");
145 encoding = pa_xstrndup(str, pos);
146 f->encoding = pa_encoding_from_string(pa_strip(encoding));
147 if (f->encoding == PA_ENCODING_INVALID)
150 if (pos != strlen(str)) {
153 properties = pa_xstrdup(&str[pos+1]);
154 plist = pa_proplist_from_string(properties);
159 pa_proplist_free(f->plist);
167 pa_xfree(properties);
171 pa_format_info_free(f);
176 int pa_format_info_is_compatible(pa_format_info *first, pa_format_info *second) {
183 if (first->encoding != second->encoding)
186 while ((key = pa_proplist_iterate(first->plist, &state))) {
187 const char *value_one, *value_two;
189 value_one = pa_proplist_gets(first->plist, key);
190 value_two = pa_proplist_gets(second->plist, key);
192 if (!value_two || !pa_format_info_prop_compatible(value_one, value_two))
199 pa_format_info* pa_format_info_from_sample_spec(pa_sample_spec *ss, pa_channel_map *map) {
200 char cm[PA_CHANNEL_MAP_SNPRINT_MAX];
203 pa_assert(ss && pa_sample_spec_valid(ss));
204 pa_assert(!map || pa_channel_map_valid(map));
206 f = pa_format_info_new();
207 f->encoding = PA_ENCODING_PCM;
209 pa_format_info_set_sample_format(f, ss->format);
210 pa_format_info_set_rate(f, ss->rate);
211 pa_format_info_set_channels(f, ss->channels);
214 pa_channel_map_snprint(cm, sizeof(cm), map);
215 pa_format_info_set_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, cm);
221 /* For PCM streams */
222 pa_bool_t pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map) {
223 char *sf = NULL, *m = NULL;
225 pa_bool_t ret = FALSE;
229 pa_return_val_if_fail(f->encoding == PA_ENCODING_PCM, FALSE);
231 if (!pa_format_info_get_prop_string(f, PA_PROP_FORMAT_SAMPLE_FORMAT, &sf))
233 if (!pa_format_info_get_prop_int(f, PA_PROP_FORMAT_RATE, &rate))
235 if (!pa_format_info_get_prop_int(f, PA_PROP_FORMAT_CHANNELS, &channels))
238 if ((ss->format = pa_parse_sample_format(sf)) == PA_SAMPLE_INVALID)
241 ss->rate = (uint32_t) rate;
242 ss->channels = (uint8_t) channels;
245 pa_channel_map_init(map);
247 if (pa_format_info_get_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, &m))
248 if (pa_channel_map_parse(map, m) == NULL)
263 /* For compressed streams */
264 pa_bool_t pa_format_info_to_sample_spec_fake(pa_format_info *f, pa_sample_spec *ss) {
269 pa_return_val_if_fail(f->encoding != PA_ENCODING_PCM, FALSE);
271 ss->format = PA_SAMPLE_S16LE;
274 pa_return_val_if_fail(pa_format_info_get_prop_int(f, PA_PROP_FORMAT_RATE, &rate), FALSE);
275 ss->rate = (uint32_t) rate;
277 if (f->encoding == PA_ENCODING_EAC3_IEC61937)
283 void pa_format_info_set_sample_format(pa_format_info *f, pa_sample_format_t sf) {
284 pa_format_info_set_prop_string(f, PA_PROP_FORMAT_SAMPLE_FORMAT, pa_sample_format_to_string(sf));
287 void pa_format_info_set_rate(pa_format_info *f, int rate) {
288 pa_format_info_set_prop_int(f, PA_PROP_FORMAT_RATE, rate);
291 void pa_format_info_set_channels(pa_format_info *f, int channels) {
292 pa_format_info_set_prop_int(f, PA_PROP_FORMAT_CHANNELS, channels);
295 void pa_format_info_set_channel_map(pa_format_info *f, const pa_channel_map *map) {
296 char map_str[PA_CHANNEL_MAP_SNPRINT_MAX];
298 pa_channel_map_snprint(map_str, sizeof(map_str), map);
300 pa_format_info_set_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, map_str);
303 pa_bool_t pa_format_info_get_prop_int(pa_format_info *f, const char *key, int *v) {
311 pa_return_val_if_fail(str = pa_proplist_gets(f->plist, key), FALSE);
312 o = json_tokener_parse(str);
313 pa_return_val_if_fail(!is_error(o), FALSE);
314 if (json_object_get_type(o) != json_type_int) {
319 *v = json_object_get_int(o);
325 pa_bool_t pa_format_info_get_prop_string(pa_format_info *f, const char *key, char **v) {
326 const char *str = NULL;
333 str = pa_proplist_gets(f->plist, key), FALSE;
337 o = json_tokener_parse(str);
338 pa_return_val_if_fail(!is_error(o), FALSE);
339 if (json_object_get_type(o) != json_type_string) {
344 *v = pa_xstrdup(json_object_get_string(o));
350 void pa_format_info_set_prop_int(pa_format_info *f, const char *key, int value) {
356 o = json_object_new_int(value);
358 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
363 void pa_format_info_set_prop_int_array(pa_format_info *f, const char *key, const int *values, int n_values) {
370 o = json_object_new_array();
372 for (i = 0; i < n_values; i++)
373 json_object_array_add(o, json_object_new_int(values[i]));
375 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
380 void pa_format_info_set_prop_int_range(pa_format_info *f, const char *key, int min, int max) {
386 o = json_object_new_object();
388 json_object_object_add(o, PA_JSON_MIN_KEY, json_object_new_int(min));
389 json_object_object_add(o, PA_JSON_MAX_KEY, json_object_new_int(max));
391 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
396 void pa_format_info_set_prop_string(pa_format_info *f, const char *key, const char *value) {
402 o = json_object_new_string(value);
404 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
409 void pa_format_info_set_prop_string_array(pa_format_info *f, const char *key, const char **values, int n_values) {
416 o = json_object_new_array();
418 for (i = 0; i < n_values; i++)
419 json_object_array_add(o, json_object_new_string(values[i]));
421 pa_proplist_sets(f->plist, key, json_object_to_json_string(o));
426 static pa_bool_t pa_json_is_fixed_type(json_object *o)
428 switch(json_object_get_type(o)) {
429 case json_type_object:
430 case json_type_array:
438 static int pa_json_value_equal(json_object *o1, json_object *o2) {
439 return (json_object_get_type(o1) == json_object_get_type(o2)) &&
440 pa_streq(json_object_to_json_string(o1), json_object_to_json_string(o2));
443 static int pa_format_info_prop_compatible(const char *one, const char *two) {
444 json_object *o1 = NULL, *o2 = NULL;
447 o1 = json_tokener_parse(one);
451 o2 = json_tokener_parse(two);
455 /* We don't deal with both values being non-fixed - just because there is no immediate need (FIXME) */
456 pa_return_val_if_fail(pa_json_is_fixed_type(o1) || pa_json_is_fixed_type(o2), FALSE);
458 if (pa_json_is_fixed_type(o1) && pa_json_is_fixed_type(o2)) {
459 ret = pa_json_value_equal(o1, o2);
463 if (pa_json_is_fixed_type(o1)) {
464 json_object *tmp = o2;
469 /* o2 is now a fixed type, and o1 is not */
471 if (json_object_get_type(o1) == json_type_array) {
472 for (i = 0; i < json_object_array_length(o1); i++) {
473 if (pa_json_value_equal(json_object_array_get_idx(o1, i), o2)) {
478 } else if (json_object_get_type(o1) == json_type_object) {
479 /* o1 should be a range type */
481 json_object *o_min = NULL, *o_max = NULL;
483 if (json_object_get_type(o2) != json_type_int) {
484 /* We don't support non-integer ranges */
488 o_min = json_object_object_get(o1, PA_JSON_MIN_KEY);
489 if (!o_min || json_object_get_type(o_min) != json_type_int)
492 o_max = json_object_object_get(o1, PA_JSON_MAX_KEY);
493 if (!o_max || json_object_get_type(o_max) != json_type_int)
496 v = json_object_get_int(o2);
497 min = json_object_get_int(o_min);
498 max = json_object_get_int(o_max);
500 ret = v >= min && v <= max;
502 pa_log_warn("Got a format type that we don't support");