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/*
* Copyright (c) 2014, 2016-2017 The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define LOG_TAG "audio_hw_dev_arbi"
/*#define LOG_NDEBUG 0*/
#define LOG_NDDEBUG 0
#include <errno.h>
#include <log/log.h>
#include <fcntl.h>
#include "audio_hw.h"
#include "platform.h"
#include "platform_api.h"
#include <sys/stat.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <cutils/properties.h>
#include "audio_extn.h"
#ifdef DYNAMIC_LOG_ENABLED
#include <log_xml_parser.h>
#define LOG_MASK HAL_MOD_FILE_DEV_ARBI
#include <log_utils.h>
#endif
#ifdef DEV_ARBI_ENABLED
typedef int (init_fn_t)();
typedef int (deinit_fn_t)();
typedef int (acquire_fn_t)(audio_devices_t aud_dev);
typedef int (release_fn_t)(audio_devices_t aud_dev);
typedef struct {
snd_device_t snd_device;
audio_devices_t aud_device;
} snd_aud_dev_mapping_t;
static void* lib_handle = NULL;
static init_fn_t *init_fp = NULL;
static deinit_fn_t *deinit_fp = NULL;
static acquire_fn_t *acquire_fp = NULL;
static release_fn_t *release_fp = NULL;
static int load_dev_arbi_lib()
{
int rc = -EINVAL;
if (lib_handle != NULL) {
ALOGE("%s: library already loaded", __func__);
return rc;
}
lib_handle = dlopen("libaudiodevarb.so", RTLD_NOW);
if (lib_handle != NULL) {
init_fp = (init_fn_t*)dlsym(lib_handle, "aud_dev_arbi_server_init");
deinit_fp = (deinit_fn_t*)dlsym(lib_handle, "aud_dev_arbi_server_deinit");
acquire_fp = (acquire_fn_t*)dlsym(lib_handle, "aud_dev_arbi_server_acquire");
release_fp = (release_fn_t*)dlsym(lib_handle, "aud_dev_arbi_server_release");
if ((init_fp == NULL) ||
(deinit_fp == NULL) ||
(acquire_fp == NULL) ||
(release_fp == NULL)) {
ALOGE("%s: error loading symbols from library", __func__);
init_fp = NULL;
deinit_fp = NULL;
acquire_fp = NULL;
release_fp = NULL;
} else
return 0;
}
return rc;
}
int audio_extn_dev_arbi_init()
{
int rc = load_dev_arbi_lib();
if (!rc)
rc = init_fp();
return rc;
}
int audio_extn_dev_arbi_deinit()
{
int rc = -EINVAL;
if(deinit_fp != NULL) {
rc = deinit_fp();
init_fp = NULL;
deinit_fp = NULL;
acquire_fp = NULL;
release_fp = NULL;
dlclose(lib_handle);
lib_handle = NULL;
}
return rc;
}
static audio_devices_t get_audio_device(snd_device_t snd_device)
{
static snd_aud_dev_mapping_t snd_aud_dev_map[] = {
{SND_DEVICE_OUT_HANDSET, AUDIO_DEVICE_OUT_EARPIECE},
{SND_DEVICE_OUT_VOICE_HANDSET, AUDIO_DEVICE_OUT_EARPIECE},
{SND_DEVICE_OUT_SPEAKER, AUDIO_DEVICE_OUT_SPEAKER},
{SND_DEVICE_OUT_VOICE_SPEAKER, AUDIO_DEVICE_OUT_SPEAKER},
{SND_DEVICE_OUT_VOICE_SPEAKER_2, AUDIO_DEVICE_OUT_SPEAKER},
{SND_DEVICE_OUT_HEADPHONES, AUDIO_DEVICE_OUT_WIRED_HEADPHONE},
{SND_DEVICE_OUT_VOICE_HEADPHONES, AUDIO_DEVICE_OUT_WIRED_HEADPHONE},
{SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES,
AUDIO_DEVICE_OUT_SPEAKER | AUDIO_DEVICE_OUT_WIRED_HEADPHONE}
{SND_DEVICE_OUT_VOICE_HEADSET, AUDIO_DEVICE_OUT_WIRED_HEADSET},
};
audio_devices_t aud_device = AUDIO_DEVICE_NONE;
uint32_t ind = 0;
for (ind = 0; ind < ARRAY_SIZE(snd_aud_dev_map); ++ind) {
if (snd_device == snd_aud_dev_map[ind].snd_device) {
aud_device = snd_aud_dev_map[ind].aud_device;
break;
}
}
return aud_device;
}
int audio_extn_dev_arbi_acquire(snd_device_t snd_device)
{
int rc = -EINVAL;
audio_devices_t audio_device = get_audio_device(snd_device);
if ((acquire_fp != NULL) && (audio_device != AUDIO_DEVICE_NONE))
rc = acquire_fp(audio_device);
return rc;
}
int audio_extn_dev_arbi_release(snd_device_t snd_device)
{
int rc = -EINVAL;
audio_devices_t audio_device = get_audio_device(snd_device);
if ((release_fp != NULL) && (audio_device != AUDIO_DEVICE_NONE))
rc = release_fp(audio_device);
return rc;
}
#endif /*DEV_ARBI_ENABLED*/
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