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      1 /*
      2  * Copyright (C) 2014 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 "ext_speaker"
     18 /*#define LOG_NDEBUG 0*/
     19 #include <cutils/log.h>
     20 
     21 #include <audio_hw.h>
     22 #include <dlfcn.h>
     23 
     24 #ifdef __LP64__
     25         #define LIB_SPEAKER_BUNDLE "/system/lib64/soundfx/libspeakerbundle.so"
     26 #else
     27         #define LIB_SPEAKER_BUNDLE "/system/lib/soundfx/libspeakerbundle.so"
     28 #endif
     29 
     30 typedef void (*set_mode_t)(int);
     31 typedef void (*set_speaker_on_t)(bool);
     32 typedef void (*set_earpiece_on_t)(bool);
     33 typedef void (*set_voice_vol_t)(float);
     34 
     35 struct speaker_data {
     36     struct audio_device *adev;
     37     void *speaker_bundle;
     38     set_mode_t set_mode;
     39     set_speaker_on_t set_speaker_on;
     40     set_earpiece_on_t set_earpiece_on;
     41     set_voice_vol_t set_voice_vol;
     42 };
     43 
     44 static struct speaker_data* open_speaker_bundle()
     45 {
     46     struct speaker_data *sd = calloc(1, sizeof(struct speaker_data));
     47 
     48     sd->speaker_bundle = dlopen(LIB_SPEAKER_BUNDLE, RTLD_NOW);
     49     if (sd->speaker_bundle == NULL) {
     50         ALOGE("%s: DLOPEN failed for %s", __func__, LIB_SPEAKER_BUNDLE);
     51         goto error;
     52     } else {
     53         ALOGV("%s: DLOPEN successful for %s", __func__, LIB_SPEAKER_BUNDLE);
     54 
     55         sd->set_mode = (set_mode_t)dlsym(sd->speaker_bundle,
     56                                              "set_mode");
     57         if (sd->set_mode == NULL) {
     58             ALOGE("%s: dlsym error %s for set_mode", __func__,
     59                   dlerror());
     60             goto error;
     61         }
     62         sd->set_speaker_on = (set_speaker_on_t)dlsym(sd->speaker_bundle,
     63                                              "set_speaker_on");
     64         if (sd->set_speaker_on == NULL) {
     65             ALOGE("%s: dlsym error %s for set_speaker_on", __func__,
     66                   dlerror());
     67             goto error;
     68         }
     69         sd->set_earpiece_on = (set_earpiece_on_t)dlsym(sd->speaker_bundle,
     70                                              "set_earpiece_on");
     71         if (sd->set_earpiece_on == NULL) {
     72             ALOGE("%s: dlsym error %s for set_earpiece_on", __func__,
     73                   dlerror());
     74             goto error;
     75         }
     76         sd->set_voice_vol = (set_voice_vol_t)dlsym(sd->speaker_bundle,
     77                                              "set_voice_volume");
     78         if (sd->set_voice_vol == NULL) {
     79             ALOGE("%s: dlsym error %s for set_voice_volume",
     80                   __func__, dlerror());
     81             goto error;
     82         }
     83     }
     84     return sd;
     85 
     86 error:
     87     free(sd);
     88     return 0;
     89 }
     90 
     91 static void close_speaker_bundle(struct speaker_data *sd)
     92 {
     93     if (sd != NULL) {
     94         dlclose(sd->speaker_bundle);
     95         free(sd);
     96         sd = NULL;
     97     }
     98 }
     99 
    100 void *audio_extn_extspk_init(struct audio_device *adev)
    101 {
    102     struct speaker_data *data = open_speaker_bundle();
    103 
    104     if (data)
    105         data->adev = adev;
    106 
    107     return data;
    108 }
    109 
    110 void audio_extn_extspk_deinit(void *extn)
    111 {
    112     struct speaker_data *data = (struct speaker_data*)extn;
    113     close_speaker_bundle(data);
    114 }
    115 
    116 void audio_extn_extspk_update(void* extn)
    117 {
    118     struct speaker_data *data = (struct speaker_data*)extn;
    119 
    120     if (data) {
    121         bool speaker_on = false;
    122         bool earpiece_on = false;
    123         struct listnode *node;
    124         struct audio_usecase *usecase;
    125         list_for_each(node, &data->adev->usecase_list) {
    126             usecase = node_to_item(node, struct audio_usecase, list);
    127             if (usecase->devices & AUDIO_DEVICE_OUT_EARPIECE) {
    128                 if(data->adev->snd_dev_ref_cnt[usecase->out_snd_device] != 0) {
    129                     earpiece_on = true;
    130                 }
    131             }
    132             if (usecase->devices & AUDIO_DEVICE_OUT_SPEAKER) {
    133                 if(data->adev->snd_dev_ref_cnt[usecase->out_snd_device] != 0) {
    134                     speaker_on = true;
    135                 }
    136             }
    137         }
    138         data->set_earpiece_on(earpiece_on);
    139         data->set_speaker_on(speaker_on);
    140     }
    141 }
    142 
    143 void audio_extn_extspk_set_mode(void* extn, audio_mode_t mode)
    144 {
    145     struct speaker_data *data = (struct speaker_data*)extn;
    146 
    147     if (data)
    148         data->set_mode(mode);
    149 }
    150 
    151 void audio_extn_extspk_set_voice_vol(void* extn, float vol)
    152 {
    153     struct speaker_data *data = (struct speaker_data*)extn;
    154 
    155     if (data)
    156         data->set_voice_vol(vol);
    157 }
    158