1 /* acoustics_default.cpp 2 ** 3 ** Copyright 2009 Wind River Systems 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #define LOG_TAG "AcousticsModule" 19 #include <utils/Log.h> 20 21 #include "AudioHardwareALSA.h" 22 23 namespace android 24 { 25 26 static int s_device_open(const hw_module_t*, const char*, hw_device_t**); 27 static int s_device_close(hw_device_t*); 28 29 static status_t s_use_handle(acoustic_device_t *, alsa_handle_t *); 30 static status_t s_cleanup(acoustic_device_t *); 31 static status_t s_set_params(acoustic_device_t *, 32 AudioSystem::audio_in_acoustics, void *params); 33 34 static hw_module_methods_t s_module_methods = { 35 open : s_device_open 36 }; 37 38 extern "C" hw_module_t HAL_MODULE_INFO_SYM = { 39 tag : HARDWARE_MODULE_TAG, 40 version_major : 1, 41 version_minor : 0, 42 id : ACOUSTICS_HARDWARE_MODULE_ID, 43 name : "ALSA acoustics module", 44 author : "Wind River", 45 methods : &s_module_methods, 46 dso : 0, 47 reserved : { 0, }, 48 }; 49 50 static int s_device_open(const hw_module_t* module, const char* name, 51 hw_device_t** device) 52 { 53 acoustic_device_t *dev; 54 dev = (acoustic_device_t *) malloc(sizeof(*dev)); 55 if (!dev) return -ENOMEM; 56 57 memset(dev, 0, sizeof(*dev)); 58 59 /* initialize the procs */ 60 dev->common.tag = HARDWARE_DEVICE_TAG; 61 dev->common.version = 0; 62 dev->common.module = (hw_module_t *) module; 63 dev->common.close = s_device_close; 64 65 // Required methods... 66 dev->use_handle = s_use_handle; 67 dev->cleanup = s_cleanup; 68 dev->set_params = s_set_params; 69 70 // read, write, and recover are optional methods... 71 72 *device = &dev->common; 73 return 0; 74 } 75 76 static int s_device_close(hw_device_t* device) 77 { 78 free(device); 79 return 0; 80 } 81 82 static status_t s_use_handle(acoustic_device_t *dev, alsa_handle_t *h) 83 { 84 return NO_ERROR; 85 } 86 87 static status_t s_cleanup(acoustic_device_t *dev) 88 { 89 ALOGD("Acoustics close stub called."); 90 return NO_ERROR; 91 } 92 93 static status_t s_set_params(acoustic_device_t *dev, 94 AudioSystem::audio_in_acoustics acoustics, void *params) 95 { 96 ALOGD("Acoustics set_params stub called with %d.", (int)acoustics); 97 return NO_ERROR; 98 } 99 } 100
