1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <dlfcn.h>
17 #include <hdf_base.h>
18 #include <hdf_dlist.h>
19 #include <hdf_log.h>
20 #include <osal_mem.h>
21
22 #include "v1_0/iaudio_manager.h"
23
24 #define HDF_LOG_TAG HDF_AUDIO_PRIMARY_SRV
25
26 typedef struct IAudioManager* (*AudioManagerCreateIfInstance)(void);
27 typedef int32_t (*AudioManagerDestroyIfInstance)(struct IAudioManager *);
28
29 struct AudioManagerPriv {
30 void *handle;
31 AudioManagerCreateIfInstance createIfInstance;
32 AudioManagerDestroyIfInstance destroyIfInstance;
33 };
34
35 static const char *g_hdiAudioLibPath = HDF_LIBRARY_FULL_PATH("libaudio_primary_impl_vendor");
36
GetAudioManagerPriv(void)37 static struct AudioManagerPriv *GetAudioManagerPriv(void)
38 {
39 static struct AudioManagerPriv priv;
40 return &priv;
41 }
42
AudioManagerLoadPrimaryLib(struct AudioManagerPriv * priv)43 static int32_t AudioManagerLoadPrimaryLib(struct AudioManagerPriv *priv)
44 {
45 char *error = NULL;
46
47 if (g_hdiAudioLibPath == NULL || priv == NULL) {
48 HDF_LOGE("%{public}s:para is null", __func__);
49 return HDF_ERR_INVALID_PARAM;
50 }
51
52 priv->handle = dlopen(g_hdiAudioLibPath, RTLD_LAZY);
53 if (priv->handle == NULL) {
54 error = dlerror();
55 HDF_LOGE("%{public}s:load path%{public}s, dlopen err=%{public}s", __func__, g_hdiAudioLibPath, error);
56 return HDF_FAILURE;
57 }
58
59 (void)dlerror(); // clear existing error
60
61 priv->createIfInstance = dlsym(priv->handle, "AudioManagerCreateIfInstance");
62 if (priv->createIfInstance == NULL) {
63 error = dlerror();
64 HDF_LOGE("%{public}s:dlsym AudioManagerCreateIfInstance err=%{public}s", __func__, error);
65 goto ERROR;
66 }
67
68 priv->destroyIfInstance = dlsym(priv->handle, "AudioManagerDestroyIfInstance");
69 if (priv->destroyIfInstance == NULL) {
70 error = dlerror();
71 HDF_LOGE("%{public}s:dlsym AudioManagerDestroyIfInstance err=%{public}s", __func__, error);
72 goto ERROR;
73 }
74
75 HDF_LOGI("%{public}s:hdi audio impl lib load success", __func__);
76 return HDF_SUCCESS;
77
78 ERROR:
79 if (priv->handle != NULL) {
80 dlclose(priv->handle);
81 priv->handle = NULL;
82 }
83 priv->createIfInstance = NULL;
84 priv->destroyIfInstance = NULL;
85 return HDF_FAILURE;
86 }
87
AudioManagerImplGetInstance(void)88 struct IAudioManager *AudioManagerImplGetInstance(void)
89 {
90 struct AudioManagerPriv *priv = GetAudioManagerPriv();
91
92 int32_t ret = AudioManagerLoadPrimaryLib(priv);
93 if (ret != HDF_SUCCESS) {
94 HDF_LOGE("%{public}s:Audio manager load lib failed, ret[%{public}d]", __func__, ret);
95 return NULL;
96 }
97
98 if (priv->createIfInstance == NULL) {
99 HDF_LOGE("%{public}s:Audio manager createIfInstance is NULL", __func__);
100 dlclose(priv->handle);
101 priv->handle = NULL;
102 return NULL;
103 }
104
105 struct IAudioManager *interface = priv->createIfInstance();
106 if (interface == NULL) {
107 HDF_LOGE("%{public}s:call createIfInstance fail", __func__);
108 dlclose(priv->handle);
109 priv->handle = NULL;
110 return NULL;
111 }
112
113 return interface;
114 }
115
AudioManagerImplRelease(struct IAudioManager * manager)116 void AudioManagerImplRelease(struct IAudioManager *manager)
117 {
118 struct AudioManagerPriv *priv = GetAudioManagerPriv();
119
120 if (manager == NULL) {
121 HDF_LOGE("%{public}s:manager is null", __func__);
122 goto ERROR;
123 }
124
125 if (priv->destroyIfInstance == NULL) {
126 HDF_LOGE("%{public}s:Audio manager destroyIfInstance is NULL", __func__);
127 goto ERROR;
128 }
129
130 int32_t ret = priv->destroyIfInstance(manager);
131 if (ret != HDF_SUCCESS) {
132 HDF_LOGE("%{public}s:call destroyIfInstance fail, ret=%{public}d", __func__, ret);
133 }
134
135 ERROR:
136 if (priv->handle != NULL) {
137 dlclose(priv->handle);
138 priv->handle = NULL;
139 }
140
141 priv->createIfInstance = NULL;
142 priv->destroyIfInstance = NULL;
143 }
144