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
28 #include <pulse/internal.h>
29 #include <pulse/xmalloc.h>
31 #include <pulsecore/core-util.h>
32 #include <pulsecore/macro.h>
36 pa_format_info* pa_format_info_new(void) {
37 pa_format_info *f = pa_xnew(pa_format_info, 1);
39 f->encoding = PA_ENCODING_INVALID;
40 f->plist = pa_proplist_new();
45 pa_format_info* pa_format_info_copy(const pa_format_info *src) {
50 dest = pa_xnew(pa_format_info, 1);
52 dest->encoding = src->encoding;
55 dest->plist = pa_proplist_copy(src->plist);
62 void pa_format_info_free(pa_format_info *f) {
65 pa_proplist_free(f->plist);
69 int pa_format_info_valid(pa_format_info *f) {
70 return (f->encoding >= 0 && f->encoding < PA_ENCODING_MAX && f->plist != NULL);
73 pa_bool_t pa_format_info_is_compatible(pa_format_info *first, pa_format_info *second) {
80 if (first->encoding != second->encoding)
83 while ((key = pa_proplist_iterate(first->plist, &state))) {
84 const char *value_one, *value_two;
86 value_one = pa_proplist_gets(first->plist, key);
87 value_two = pa_proplist_gets(second->plist, key);
89 if (!value_two || !pa_streq(value_one, value_two))
96 pa_format_info* pa_format_info_from_sample_spec(pa_sample_spec *ss, pa_channel_map *map) {
97 char cm[PA_CHANNEL_MAP_SNPRINT_MAX];
100 pa_assert(ss && pa_sample_spec_valid(ss));
101 pa_assert(!map || pa_channel_map_valid(map));
103 f = pa_format_info_new();
104 f->encoding = PA_ENCODING_PCM;
106 pa_proplist_sets(f->plist, PA_PROP_FORMAT_SAMPLE_FORMAT, pa_sample_format_to_string(ss->format));
107 pa_proplist_setf(f->plist, PA_PROP_FORMAT_RATE, "%u", (unsigned int) ss->rate);
108 pa_proplist_setf(f->plist, PA_PROP_FORMAT_CHANNELS, "%u", (unsigned int) ss->channels);
111 pa_channel_map_snprint(cm, sizeof(cm), map);
112 pa_proplist_setf(f->plist, PA_PROP_FORMAT_CHANNEL_MAP, "%s", cm);
118 /* For PCM streams */
119 void pa_format_info_to_sample_spec(pa_format_info *f, pa_sample_spec *ss, pa_channel_map *map) {
120 const char *sf, *r, *ch;
125 pa_assert(f->encoding == PA_ENCODING_PCM);
127 pa_assert(sf = pa_proplist_gets(f->plist, PA_PROP_FORMAT_SAMPLE_FORMAT));
128 pa_assert(r = pa_proplist_gets(f->plist, PA_PROP_FORMAT_RATE));
129 pa_assert(ch = pa_proplist_gets(f->plist, PA_PROP_FORMAT_CHANNELS));
131 pa_assert((ss->format = pa_parse_sample_format(sf)) != PA_SAMPLE_INVALID);
132 pa_assert(pa_atou(r, &ss->rate) == 0);
133 pa_assert(pa_atou(ch, &channels) == 0);
134 ss->channels = (uint8_t) channels;
137 const char *m = pa_proplist_gets(f->plist, PA_PROP_FORMAT_CHANNEL_MAP);
138 pa_channel_map_init(map);
141 pa_assert(pa_channel_map_parse(map, m) != NULL);
145 /* For compressed streams */
146 void pa_format_info_to_sample_spec_fake(pa_format_info *f, pa_sample_spec *ss) {
151 pa_assert(f->encoding != PA_ENCODING_PCM);
153 ss->format = PA_SAMPLE_S16LE;
156 pa_assert(r = pa_proplist_gets(f->plist, PA_PROP_FORMAT_RATE));
157 pa_assert(pa_atou(r, &ss->rate) == 0);