1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "DevicesFactoryHalLocal"
18 //#define LOG_NDEBUG 0
19
20 #include <string.h>
21
22 #include <hardware/audio.h>
23 #include <utils/Log.h>
24
25 #include "DeviceHalLocal.h"
26 #include "DevicesFactoryHalLocal.h"
27
28 namespace android {
29 namespace CPP_VERSION {
30
load_audio_interface(const char * if_name,audio_hw_device_t ** dev)31 static status_t load_audio_interface(const char *if_name, audio_hw_device_t **dev)
32 {
33 const hw_module_t *mod;
34 int rc;
35
36 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, &mod);
37 if (rc) {
38 ALOGE("%s couldn't load audio hw module %s.%s (%s)", __func__,
39 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
40 goto out;
41 }
42 rc = audio_hw_device_open(mod, dev);
43 if (rc) {
44 ALOGE("%s couldn't open audio hw device in %s.%s (%s)", __func__,
45 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
46 goto out;
47 }
48 if ((*dev)->common.version < AUDIO_DEVICE_API_VERSION_MIN) {
49 ALOGE("%s wrong audio hw device version %04x", __func__, (*dev)->common.version);
50 rc = BAD_VALUE;
51 audio_hw_device_close(*dev);
52 goto out;
53 }
54 return OK;
55
56 out:
57 *dev = NULL;
58 return rc;
59 }
60
openDevice(const char * name,sp<DeviceHalInterface> * device)61 status_t DevicesFactoryHalLocal::openDevice(const char *name, sp<DeviceHalInterface> *device) {
62 audio_hw_device_t *dev;
63 status_t rc = load_audio_interface(name, &dev);
64 if (rc == OK) {
65 *device = new DeviceHalLocal(dev);
66 }
67 return rc;
68 }
69
70 } // namespace CPP_VERSION
71 } // namespace android
72