/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "soundtrigger"
/* #define LOG_NDEBUG 0 */
#define LOG_NDDEBUG 0
#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <cutils/log.h>
#include "audio_hw.h"
#include "audio_extn.h"
#include "platform.h"
#include "platform_api.h"
#include "sound_trigger_prop_intf.h"
#define XSTR(x) STR(x)
#define STR(x) #x
#ifdef __LP64__
#define SOUND_TRIGGER_LIBRARY_PATH "/system/vendor/lib64/hw/sound_trigger.primary.%s.so"
#else
#define SOUND_TRIGGER_LIBRARY_PATH "/system/vendor/lib/hw/sound_trigger.primary.%s.so"
#endif
struct sound_trigger_info {
struct sound_trigger_session_info st_ses;
bool lab_stopped;
struct listnode list;
};
struct sound_trigger_audio_device {
void *lib_handle;
struct audio_device *adev;
sound_trigger_hw_call_back_t st_callback;
struct listnode st_ses_list;
pthread_mutex_t lock;
};
static struct sound_trigger_audio_device *st_dev;
static struct sound_trigger_info *
get_sound_trigger_info(int capture_handle)
{
struct sound_trigger_info *st_ses_info = NULL;
struct listnode *node;
ALOGV("%s: list %d capture_handle %d", __func__,
list_empty(&st_dev->st_ses_list), capture_handle);
list_for_each(node, &st_dev->st_ses_list) {
st_ses_info = node_to_item(node, struct sound_trigger_info , list);
if (st_ses_info->st_ses.capture_handle == capture_handle)
return st_ses_info;
}
return NULL;
}
int audio_hw_call_back(sound_trigger_event_type_t event,
sound_trigger_event_info_t* config)
{
int status = 0;
struct sound_trigger_info *st_ses_info;
if (!st_dev)
return -EINVAL;
pthread_mutex_lock(&st_dev->lock);
switch (event) {
case ST_EVENT_SESSION_REGISTER:
if (!config) {
ALOGE("%s: NULL config", __func__);
status = -EINVAL;
break;
}
st_ses_info= calloc(1, sizeof(struct sound_trigger_info ));
if (!st_ses_info) {
ALOGE("%s: st_ses_info alloc failed", __func__);
status = -ENOMEM;
break;
}
memcpy(&st_ses_info->st_ses, &config->st_ses, sizeof (config->st_ses));
ALOGV("%s: add capture_handle %d pcm %p", __func__,
st_ses_info->st_ses.capture_handle, st_ses_info->st_ses.pcm);
list_add_tail(&st_dev->st_ses_list, &st_ses_info->list);
break;
case ST_EVENT_SESSION_DEREGISTER:
if (!config) {
ALOGE("%s: NULL config", __func__);
status = -EINVAL;
break;
}
st_ses_info = get_sound_trigger_info(config->st_ses.capture_handle);
if (!st_ses_info) {
ALOGE("%s: pcm %p not in the list!", __func__, config->st_ses.pcm);
status = -EINVAL;
break;
}
ALOGV("%s: remove capture_handle %d pcm %p", __func__,
st_ses_info->st_ses.capture_handle, st_ses_info->st_ses.pcm);
list_remove(&st_ses_info->list);
free(st_ses_info);
break;
default:
ALOGW("%s: Unknown event %d", __func__, event);
break;
}
pthread_mutex_unlock(&st_dev->lock);
return status;
}
int audio_extn_sound_trigger_read(struct stream_in *in, void *buffer,
size_t bytes)
{
int ret = -1;
struct sound_trigger_info *st_info = NULL;
audio_event_info_t event;
if (!st_dev)
return ret;
if (!in->is_st_session_active) {
ALOGE(" %s: Sound trigger is not active", __func__);
goto exit;
}
if (in->standby)
in->standby = false;
pthread_mutex_lock(&st_dev->lock);
st_info = get_sound_trigger_info(in->capture_handle);
pthread_mutex_unlock(&st_dev->lock);
if (st_info) {
event.u.aud_info.ses_info = &st_info->st_ses;
event.u.aud_info.buf = buffer;
event.u.aud_info.num_bytes = bytes;
ret = st_dev->st_callback(AUDIO_EVENT_READ_SAMPLES, &event);
}
exit:
if (ret) {
if (-ENETRESET == ret)
in->is_st_session_active = false;
memset(buffer, 0, bytes);
ALOGV("%s: read failed status %d - sleep", __func__, ret);
usleep((bytes * 1000000) / (audio_stream_in_frame_size((struct audio_stream_in *)in) *
in->config.rate));
}
return ret;
}
void audio_extn_sound_trigger_stop_lab(struct stream_in *in)
{
int status = 0;
struct sound_trigger_info *st_ses_info = NULL;
audio_event_info_t event;
if (!st_dev || !in)
return;
pthread_mutex_lock(&st_dev->lock);
st_ses_info = get_sound_trigger_info(in->capture_handle);
pthread_mutex_unlock(&st_dev->lock);
if (st_ses_info) {
event.u.ses_info = st_ses_info->st_ses;
ALOGV("%s: AUDIO_EVENT_STOP_LAB pcm %p", __func__, st_ses_info->st_ses.pcm);
st_dev->st_callback(AUDIO_EVENT_STOP_LAB, &event);
}
}
void audio_extn_sound_trigger_check_and_get_session(struct stream_in *in)
{
struct sound_trigger_info *st_ses_info = NULL;
struct listnode *node;
if (!st_dev || !in)
return;
pthread_mutex_lock(&st_dev->lock);
in->is_st_session = false;
ALOGV("%s: list %d capture_handle %d", __func__,
list_empty(&st_dev->st_ses_list), in->capture_handle);
list_for_each(node, &st_dev->st_ses_list) {
st_ses_info = node_to_item(node, struct sound_trigger_info , list);
if (st_ses_info->st_ses.capture_handle == in->capture_handle) {
in->pcm = st_ses_info->st_ses.pcm;
in->config = st_ses_info->st_ses.config;
in->channel_mask = audio_channel_in_mask_from_count(in->config.channels);
in->is_st_session = true;
in->is_st_session_active = true;
ALOGV("%s: capture_handle %d is sound trigger", __func__, in->capture_handle);
break;
}
}
pthread_mutex_unlock(&st_dev->lock);
}
void audio_extn_sound_trigger_update_device_status(snd_device_t snd_device,
st_event_type_t event)
{
int device_type = -1;
if (!st_dev)
return;
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) {
if (snd_device == SND_DEVICE_IN_CAPTURE_VI_FEEDBACK)
return;
device_type = PCM_CAPTURE;
} else {
ALOGE("%s: invalid device 0x%x, for event %d",
__func__, snd_device, event);
return;
}
ALOGV("%s: device 0x%x of type %d for Event %d",
__func__, snd_device, device_type, event);
if (device_type == PCM_CAPTURE) {
switch(event) {
case ST_EVENT_SND_DEVICE_FREE:
st_dev->st_callback(AUDIO_EVENT_CAPTURE_DEVICE_INACTIVE, NULL);
break;
case ST_EVENT_SND_DEVICE_BUSY:
st_dev->st_callback(AUDIO_EVENT_CAPTURE_DEVICE_ACTIVE, NULL);
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_sound_trigger_set_parameters(struct audio_device *adev __unused,
struct str_parms *params)
{
audio_event_info_t event;
char value[32];
int ret, val;
if(!st_dev || !params) {
ALOGE("%s: str_params NULL", __func__);
return;
}
ret = str_parms_get_str(params, "SND_CARD_STATUS", value,
sizeof(value));
if (ret > 0) {
if (strstr(value, "OFFLINE")) {
event.u.status = SND_CARD_STATUS_OFFLINE;
st_dev->st_callback(AUDIO_EVENT_SSR, &event);
}
else if (strstr(value, "ONLINE")) {
event.u.status = SND_CARD_STATUS_ONLINE;
st_dev->st_callback(AUDIO_EVENT_SSR, &event);
}
else
ALOGE("%s: unknown snd_card_status", __func__);
}
ret = str_parms_get_str(params, "CPE_STATUS", value, sizeof(value));
if (ret > 0) {
if (strstr(value, "OFFLINE")) {
event.u.status = CPE_STATUS_OFFLINE;
st_dev->st_callback(AUDIO_EVENT_SSR, &event);
}
else if (strstr(value, "ONLINE")) {
event.u.status = CPE_STATUS_ONLINE;
st_dev->st_callback(AUDIO_EVENT_SSR, &event);
}
else
ALOGE("%s: unknown CPE status", __func__);
}
ret = str_parms_get_int(params, "SVA_NUM_SESSIONS", &val);
if (ret >= 0) {
event.u.value = val;
st_dev->st_callback(AUDIO_EVENT_NUM_ST_SESSIONS, &event);
}
}
int audio_extn_sound_trigger_init(struct audio_device *adev)
{
int status = 0;
char sound_trigger_lib[100];
void *lib_handle;
ALOGV("%s: Enter", __func__);
st_dev = (struct sound_trigger_audio_device*)
calloc(1, sizeof(struct sound_trigger_audio_device));
if (!st_dev) {
ALOGE("%s: ERROR. sound trigger alloc failed", __func__);
return -ENOMEM;
}
snprintf(sound_trigger_lib, sizeof(sound_trigger_lib),
SOUND_TRIGGER_LIBRARY_PATH,
XSTR(SOUND_TRIGGER_PLATFORM_NAME));
st_dev->lib_handle = dlopen(sound_trigger_lib, RTLD_NOW);
if (st_dev->lib_handle == NULL) {
ALOGE("%s: DLOPEN failed for %s. error = %s", __func__, sound_trigger_lib,
dlerror());
status = -EINVAL;
goto cleanup;
}
ALOGV("%s: DLOPEN successful for %s", __func__, sound_trigger_lib);
st_dev->st_callback = (sound_trigger_hw_call_back_t)
dlsym(st_dev->lib_handle, "sound_trigger_hw_call_back");
if (st_dev->st_callback == NULL) {
ALOGE("%s: ERROR. dlsym Error:%s sound_trigger_hw_call_back", __func__,
dlerror());
goto cleanup;
}
st_dev->adev = adev;
list_init(&st_dev->st_ses_list);
return 0;
cleanup:
if (st_dev->lib_handle)
dlclose(st_dev->lib_handle);
free(st_dev);
st_dev = NULL;
return status;
}
void audio_extn_sound_trigger_deinit(struct audio_device *adev)
{
ALOGV("%s: Enter", __func__);
if (st_dev && (st_dev->adev == adev) && st_dev->lib_handle) {
dlclose(st_dev->lib_handle);
free(st_dev);
st_dev = NULL;
}
}