1/***
2  This file is part of PulseAudio.
3
4  Copyright 2019 Pali Rohár <pali.rohar@gmail.com>
5
6  PulseAudio is free software; you can redistribute it and/or modify
7  it under the terms of the GNU Lesser General Public License as
8  published by the Free Software Foundation; either version 2.1 of the
9  License, or (at your option) any later version.
10
11  PulseAudio is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  General Public License for more details.
15
16  You should have received a copy of the GNU Lesser General Public
17  License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18***/
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include <pulsecore/core.h>
25#include <pulsecore/core-util.h>
26#if defined(HAVE_GSTAPTX) || defined(HAVE_GSTLDAC)
27#include <gst/gst.h>
28#endif
29
30#include "a2dp-codec-util.h"
31
32extern const pa_bt_codec pa_bt_codec_msbc;
33extern const pa_bt_codec pa_bt_codec_cvsd;
34
35/* List of HSP/HFP codecs.
36 */
37static const pa_bt_codec *pa_hf_codecs[] = {
38    &pa_bt_codec_cvsd,
39    &pa_bt_codec_msbc,
40};
41
42extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_sbc;
43extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_sbc_xq_453;
44extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_sbc_xq_512;
45extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_sbc_xq_552;
46#ifdef HAVE_GSTAPTX
47extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_aptx;
48extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_aptx_hd;
49#endif
50#ifdef HAVE_GSTLDAC
51extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_ldac_eqmid_hq;
52extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_ldac_eqmid_sq;
53extern const pa_a2dp_endpoint_conf pa_a2dp_endpoint_conf_ldac_eqmid_mq;
54#endif
55
56/* This is list of supported codecs. Their order is important.
57 * Codec with lower index has higher priority. */
58static const pa_a2dp_endpoint_conf *pa_a2dp_endpoint_configurations[] = {
59#ifdef HAVE_GSTLDAC
60    &pa_a2dp_endpoint_conf_ldac_eqmid_hq,
61    &pa_a2dp_endpoint_conf_ldac_eqmid_sq,
62    &pa_a2dp_endpoint_conf_ldac_eqmid_mq,
63#endif
64#ifdef HAVE_GSTAPTX
65    &pa_a2dp_endpoint_conf_aptx_hd,
66    &pa_a2dp_endpoint_conf_aptx,
67#endif
68    &pa_a2dp_endpoint_conf_sbc,
69    &pa_a2dp_endpoint_conf_sbc_xq_453,
70    &pa_a2dp_endpoint_conf_sbc_xq_512,
71    &pa_a2dp_endpoint_conf_sbc_xq_552,
72};
73
74unsigned int pa_bluetooth_a2dp_endpoint_conf_count(void) {
75    return PA_ELEMENTSOF(pa_a2dp_endpoint_configurations);
76}
77
78const pa_a2dp_endpoint_conf *pa_bluetooth_a2dp_endpoint_conf_iter(unsigned int i) {
79    pa_assert(i < pa_bluetooth_a2dp_endpoint_conf_count());
80    return pa_a2dp_endpoint_configurations[i];
81}
82
83unsigned int pa_bluetooth_hf_codec_count(void) {
84    return PA_ELEMENTSOF(pa_hf_codecs);
85}
86
87const pa_bt_codec *pa_bluetooth_hf_codec_iter(unsigned int i) {
88    pa_assert(i < pa_bluetooth_hf_codec_count());
89    return pa_hf_codecs[i];
90}
91
92const pa_bt_codec *pa_bluetooth_get_hf_codec(const char *name) {
93    unsigned int i;
94
95    for (i = 0; i < PA_ELEMENTSOF(pa_hf_codecs); ++i) {
96        if (pa_streq(pa_hf_codecs[i]->name, name))
97            return pa_hf_codecs[i];
98    }
99
100    return NULL;
101}
102
103const pa_a2dp_endpoint_conf *pa_bluetooth_get_a2dp_endpoint_conf(const char *name) {
104    unsigned int i;
105    unsigned int count = pa_bluetooth_a2dp_endpoint_conf_count();
106
107    for (i = 0; i < count; i++) {
108        if (pa_streq(pa_a2dp_endpoint_configurations[i]->bt_codec.name, name))
109            return pa_a2dp_endpoint_configurations[i];
110    }
111
112    return NULL;
113}
114
115void pa_bluetooth_a2dp_codec_gst_init(void) {
116#if defined(HAVE_GSTAPTX) || defined(HAVE_GSTLDAC)
117    GError *error = NULL;
118
119    if (!gst_init_check(NULL, NULL, &error)) {
120        pa_log_error("Could not initialise GStreamer: %s", error->message);
121        g_error_free(error);
122        return;
123    }
124    pa_log_info("GStreamer initialisation done");
125#endif
126}
127
128bool pa_bluetooth_a2dp_codec_is_available(const pa_a2dp_codec_id *id, bool is_a2dp_sink) {
129    unsigned int i;
130    unsigned int count = pa_bluetooth_a2dp_endpoint_conf_count();
131    const pa_a2dp_endpoint_conf *conf;
132
133    for (i = 0; i < count; i++) {
134        conf = pa_bluetooth_a2dp_endpoint_conf_iter(i);
135        if (memcmp(id, &conf->id, sizeof(pa_a2dp_codec_id)) == 0
136                && conf->can_be_supported(is_a2dp_sink))
137            return true;
138    }
139
140    return false;
141}
142