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/* Copyright (c) 2013-2014, 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 "listen_hal_loader"
/* #define LOG_NDEBUG 0 */
/* #define LOG_NDDEBUG 0 */
#include <stdbool.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <cutils/log.h>
#ifdef AUDIO_LISTEN_ENABLED
#include <listen_types.h>
#endif
#include "audio_hw.h"
#include "audio_extn.h"
#include "platform.h"
#include "platform_api.h"
#ifdef AUDIO_LISTEN_ENABLED
#define LIB_LISTEN_LOADER "/vendor/lib/liblistenhardware.so"
#define LISTEN_LOAD_SYMBOLS(dev, func_p, func_type, symbol) \
{\
dev->func_p = (func_type)dlsym(dev->lib_handle,#symbol);\
if (dev->func_p == NULL) {\
ALOGE("%s: dlsym error %s for %s",\
__func__, dlerror(), #symbol);\
free(dev);\
dev = NULL;\
return -EINVAL;\
}\
}
typedef int (*create_listen_hw_t)(unsigned int snd_card,
struct audio_route *audio_route);
typedef void (*destroy_listen_hw_t)();
typedef int (*open_listen_session_t)(struct audio_hw_device *,
struct listen_open_params*,
struct listen_session**);
typedef int (*close_listen_session_t)(struct audio_hw_device *dev,
struct listen_session* handle);
typedef int (*set_mad_observer_t)(struct audio_hw_device *dev,
listen_callback_t cb_func);
typedef int (*listen_set_parameters_t)(struct audio_hw_device *dev,
const char *kv_pairs);
typedef char* (*get_parameters_t)(const struct audio_hw_device *dev,
const char *keys);
typedef void (*listen_notify_event_t)(event_type_t event_type);
struct listen_audio_device {
void *lib_handle;
struct audio_device *adev;
create_listen_hw_t create_listen_hw;
destroy_listen_hw_t destroy_listen_hw;
open_listen_session_t open_listen_session;
close_listen_session_t close_listen_session;
set_mad_observer_t set_mad_observer;
listen_set_parameters_t listen_set_parameters;
get_parameters_t get_parameters;
listen_notify_event_t notify_event;
};
static struct listen_audio_device *listen_dev;
void audio_extn_listen_update_device_status(snd_device_t snd_device,
listen_event_type_t event)
{
bool raise_event = false;
int device_type = -1;
if (snd_device >= SND_DEVICE_OUT_BEGIN &&
snd_device < SND_DEVICE_OUT_END)
device_type = PCM_PLAYBACK;
else if (snd_device >= SND_DEVICE_IN_BEGIN &&
snd_device < SND_DEVICE_IN_END)
device_type = PCM_CAPTURE;
else {
ALOGE("%s: invalid device 0x%x, for event %d",
__func__, snd_device, event);
return;
}
if (listen_dev) {
raise_event = platform_listen_device_needs_event(snd_device);
ALOGI("%s(): device 0x%x of type %d for Event %d, with Raise=%d",
__func__, snd_device, device_type, event, raise_event);
if (raise_event && (device_type == PCM_CAPTURE)) {
switch(event) {
case LISTEN_EVENT_SND_DEVICE_FREE:
listen_dev->notify_event(AUDIO_DEVICE_IN_INACTIVE);
break;
case LISTEN_EVENT_SND_DEVICE_BUSY:
listen_dev->notify_event(AUDIO_DEVICE_IN_ACTIVE);
break;
default:
ALOGW("%s:invalid event %d for device 0x%x",
__func__, event, snd_device);
}
}/*Events for output device, if required can be placed here in else*/
}
}
void audio_extn_listen_update_stream_status(struct audio_usecase *uc_info,
listen_event_type_t event)
{
bool raise_event = false;
audio_usecase_t uc_id;
int usecase_type = -1;
if (uc_info == NULL) {
ALOGE("%s: usecase is NULL!!!", __func__);
return;
}
uc_id = uc_info->id;
usecase_type = uc_info->type;
if (listen_dev) {
raise_event = platform_listen_usecase_needs_event(uc_id);
ALOGI("%s(): uc_id %d of type %d for Event %d, with Raise=%d",
__func__, uc_id, usecase_type, event, raise_event);
if (raise_event && (usecase_type == PCM_PLAYBACK)) {
switch(event) {
case LISTEN_EVENT_STREAM_FREE:
listen_dev->notify_event(AUDIO_STREAM_OUT_INACTIVE);
break;
case LISTEN_EVENT_STREAM_BUSY:
listen_dev->notify_event(AUDIO_STREAM_OUT_ACTIVE);
break;
default:
ALOGW("%s:invalid event %d, for usecase %d",
__func__, event, uc_id);
}
}/*Events for capture usecase, if required can be placed here in else*/
}
}
void audio_extn_listen_set_parameters(struct audio_device *adev,
struct str_parms *parms)
{
ALOGV("%s: enter", __func__);
if (listen_dev) {
char *kv_pairs = str_parms_to_str(parms);
ALOGV_IF(kv_pairs != NULL, "%s: %s", __func__, kv_pairs);
listen_dev->listen_set_parameters(&adev->device, kv_pairs);
free(kv_pairs);
}
return;
}
int audio_extn_listen_init(struct audio_device *adev, unsigned int snd_card)
{
int ret;
void *lib_handle;
ALOGI("%s: Enter", __func__);
lib_handle = dlopen(LIB_LISTEN_LOADER, RTLD_NOW);
if (lib_handle == NULL) {
ALOGE("%s: DLOPEN failed for %s. error = %s", __func__, LIB_LISTEN_LOADER,
dlerror());
return -EINVAL;
} else {
ALOGI("%s: DLOPEN successful for %s", __func__, LIB_LISTEN_LOADER);
listen_dev = (struct listen_audio_device*)
calloc(1, sizeof(struct listen_audio_device));
if (!listen_dev) {
ALOGE("failed to allocate listen_dev mem");
return -ENOMEM;
}
listen_dev->lib_handle = lib_handle;
listen_dev->adev = adev;
LISTEN_LOAD_SYMBOLS(listen_dev, create_listen_hw,
create_listen_hw_t, create_listen_hw);
LISTEN_LOAD_SYMBOLS(listen_dev, destroy_listen_hw,
destroy_listen_hw_t, destroy_listen_hw);
LISTEN_LOAD_SYMBOLS(listen_dev, open_listen_session,
open_listen_session_t, open_listen_session);
adev->device.open_listen_session = listen_dev->open_listen_session;
LISTEN_LOAD_SYMBOLS(listen_dev, close_listen_session,
close_listen_session_t, close_listen_session);
adev->device.close_listen_session = listen_dev->close_listen_session;
LISTEN_LOAD_SYMBOLS(listen_dev, set_mad_observer,
set_mad_observer_t, set_mad_observer);
adev->device.set_mad_observer = listen_dev->set_mad_observer;
LISTEN_LOAD_SYMBOLS(listen_dev, listen_set_parameters,
listen_set_parameters_t, listen_hw_set_parameters);
adev->device.listen_set_parameters = listen_dev->listen_set_parameters;
LISTEN_LOAD_SYMBOLS(listen_dev, get_parameters,
get_parameters_t, listen_hw_get_parameters);
LISTEN_LOAD_SYMBOLS(listen_dev, notify_event,
listen_notify_event_t, listen_hw_notify_event);
listen_dev->create_listen_hw(snd_card, adev->audio_route);
}
return 0;
}
void audio_extn_listen_deinit(struct audio_device *adev)
{
ALOGI("%s: Enter", __func__);
if (listen_dev && (listen_dev->adev == adev) && listen_dev->lib_handle) {
listen_dev->destroy_listen_hw();
dlclose(listen_dev->lib_handle);
free(listen_dev);
listen_dev = NULL;
}
}
#endif /* AUDIO_LISTEN_ENABLED */
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