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
load_audio_interface(const char * if_name,audio_hw_device_t ** dev)30 static status_t load_audio_interface(const char *if_name, audio_hw_device_t **dev)
31 {
32 const hw_module_t *mod;
33 int rc;
34
35 rc = hw_get_module_by_class(AUDIO_HARDWARE_MODULE_ID, if_name, &mod);
36 if (rc) {
37 ALOGE("%s couldn't load audio hw module %s.%s (%s)", __func__,
38 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
39 goto out;
40 }
41 rc = audio_hw_device_open(mod, dev);
42 if (rc) {
43 ALOGE("%s couldn't open audio hw device in %s.%s (%s)", __func__,
44 AUDIO_HARDWARE_MODULE_ID, if_name, strerror(-rc));
45 goto out;
46 }
47 if ((*dev)->common.version < AUDIO_DEVICE_API_VERSION_MIN) {
48 ALOGE("%s wrong audio hw device version %04x", __func__, (*dev)->common.version);
49 rc = BAD_VALUE;
50 audio_hw_device_close(*dev);
51 goto out;
52 }
53 return OK;
54
55 out:
56 *dev = NULL;
57 return rc;
58 }
59
openDevice(const char * name,sp<DeviceHalInterface> * device)60 status_t DevicesFactoryHalLocal::openDevice(const char *name, sp<DeviceHalInterface> *device) {
61 audio_hw_device_t *dev;
62 status_t rc = load_audio_interface(name, &dev);
63 if (rc == OK) {
64 *device = new DeviceHalLocal(dev);
65 }
66 return rc;
67 }
68
69 } // namespace android
70