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sound_trigger_hw.c
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/* sound_trigger_hw.c
*
* This file contains the API to load sound models with
* DSP and start/stop detection of associated key phrases.
*
* Copyright (c) 2013-2021, 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.
*
* Not a Contribution.
*
* Copyright (C) 2011 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.
*
*Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#define LOG_TAG "sound_trigger_hw"
#define ATRACE_TAG (ATRACE_TAG_HAL)
/* #define LOG_NDEBUG 0 */
#define LOG_NDDEBUG 0
#include <errno.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <sys/resource.h>
#include <sys/prctl.h>
#include <sys/ioctl.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <cutils/trace.h>
#include <system/thread_defs.h>
#include <hardware/sound_trigger.h>
#include <cutils/str_parms.h>
#include "st_common_defs.h"
#include "sound_trigger_platform.h"
#include "sound_trigger_hw.h"
#include "st_session.h"
#include "st_hw_common.h"
#include "st_hw_extn.h"
#include "st_hw_defs.h"
#define XSTR(x) STR(x)
#define STR(x) #x
/* count of sound trigger hal clients */
static unsigned int stdev_ref_cnt = 0;
static pthread_mutex_t stdev_init_lock;
static struct sound_trigger_device *stdev = NULL;
static struct sound_trigger_properties_extended_1_3 hw_properties_extended;
/* default properties which will later be updated based on platform configuration */
static struct sound_trigger_properties hw_properties = {
"QUALCOMM Technologies, Inc", // implementor
"Sound Trigger HAL", // description
1, // version
{ 0x68ab2d40, 0xe860, 0x11e3, 0x95ef, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // uuid
1, // max_sound_models
1, // max_key_phrases
1, // max_users
RECOGNITION_MODE_VOICE_TRIGGER | RECOGNITION_MODE_GENERIC_TRIGGER, // recognition_modes
true, // capture_transition
0, // max_capture_ms
false, // concurrent_capture
false, //trigger_in_event
0 // power_consumption_mw
};
/* vendor uuid that the client passes for LPMA feature */
static const sound_trigger_uuid_t lpma_uuid =
{ 0x57CADDB1, 0xACDB, 0x4DCE, 0x8CB0, { 0x2E, 0x95, 0xA2, 0x31, 0x3A, 0xEE } };
static void update_available_phrase_info(st_session_t *p_ses,
struct sound_trigger_phrase_sound_model *phrase_sm,
bool add);
static int stdev_reconfig_backend_on_stop(st_session_t *stopped_ses);
static int stop_recognition_l(st_session_t *st_session)
{
int status = 0;
st_session_stop_lab(st_session);
status = st_session_stop(st_session);
pthread_mutex_lock(&st_session->lock);
st_session->callback = NULL;
if (st_session->rc_config) {
free(st_session->rc_config);
st_session->rc_config = NULL;
}
if (st_session->st_conf_levels) {
free(st_session->st_conf_levels);
st_session->st_conf_levels = NULL;
}
pthread_mutex_unlock(&st_session->lock);
stdev_reconfig_backend_on_stop(st_session);
return status;
}
void update_hw_mad_exec_mode(st_exec_mode_t mode, st_profile_type_t profile_type)
{
if (stdev->exec_mode != mode) {
platform_stdev_connect_mad(stdev->platform, mode, profile_type);
stdev->exec_mode = mode;
ALOGV("%s: new exec_mode 0x%x", __func__, mode);
}
}
unsigned int get_num_sessions()
{
struct listnode *ses_node;
st_session_t *p_ses;
unsigned int num_sessions = 0;
if ((list_head(&stdev->sound_model_list) == NULL) ||
(list_tail(&stdev->sound_model_list) == NULL)) {
ALOGE("%s: sound model list is yet to be initialized", __func__);
return num_sessions;
}
list_for_each(ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(ses_node, st_session_t, list_node);
num_sessions++;
}
return num_sessions;
}
unsigned int get_num_sessions_in_exec_mode(st_exec_mode_t mode)
{
struct listnode *ses_node;
st_session_t *p_ses;
unsigned int num_sessions = 0;
if ((list_head(&stdev->sound_model_list) == NULL) ||
(list_tail(&stdev->sound_model_list) == NULL)) {
ALOGE("%s: sound model list is yet to be initialized", __func__);
return num_sessions;
}
list_for_each(ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(ses_node, st_session_t, list_node);
if (p_ses->exec_mode == mode)
num_sessions++;
}
return num_sessions;
}
static bool check_phrases_users_available(struct st_vendor_info *v_info,
unsigned int num_phrases, unsigned int num_users,
st_exec_mode_t exec_mode, bool transit)
{
bool available = false;
if (!v_info) {
ALOGE("%s: NULL vendor info", __func__);
return false;
}
if (!transit) {
if (exec_mode == ST_EXEC_MODE_CPE) {
if ((num_phrases <= v_info->avail_cpe_phrases) &&
(num_users <= v_info->avail_cpe_users))
available = true;
}
if (exec_mode == ST_EXEC_MODE_ADSP) {
if ((num_phrases <= v_info->avail_ape_phrases) &&
(num_users <= v_info->avail_ape_users))
available = true;
}
} else {
if (exec_mode == ST_EXEC_MODE_CPE) {
if ((num_phrases <= v_info->avail_transit_cpe_phrases) &&
(num_users <= v_info->avail_transit_cpe_users))
available = true;
}
if (exec_mode == ST_EXEC_MODE_ADSP) {
if ((num_phrases <= v_info->avail_transit_ape_phrases) &&
(num_users <= v_info->avail_transit_ape_users))
available = true;
}
}
ALOGV("%s: exec mode %d, transit %d, available %d",
__func__, exec_mode, transit, available);
return available;
}
static int parse_exec_mode_config(char *value,
st_exec_mode_t *exec_mode,
sound_model_handle_t *sm_handle)
{
int ret = -EINVAL;
char *id, *test_r;
if (!value || !exec_mode || !sm_handle) {
ALOGE("%s: Invalid params passed", __func__);
return ret;
}
/*
* <exec_mode>,<sound_model_handle>
* sound model handle is optional. Valid set param values are:
* 1. "0" -> exec mode is set and sound model handle to default value 0
* 2. "1,2" -> exec mode and sound model handle are set to passed values
* sound model handle as 0 is treated as a global set parameter.
*/
id = strtok_r(value, ", ", &test_r);
if (!id) {
ALOGE("%s: incorrect exec mode passed", __func__);
return ret;
}
*exec_mode = atoi(id);
id = strtok_r(NULL, ", ", &test_r);
if (!id) {
ALOGD("%s: No session id passed, treat as global set param", __func__);
*sm_handle = 0;
} else {
*sm_handle = atoi(id);
}
ALOGD("%s: mode %d, sm handle %d", __func__, *exec_mode, *sm_handle);
return 0;
}
static bool is_any_session_buffering()
{
struct listnode *p_ses_node;
st_session_t *p_ses;
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
if (st_session_is_buffering(p_ses)) {
ALOGD("%s:[%d] session is buffering", __func__, p_ses->sm_handle);
stdev->is_buffering = true;
return true;
}
}
return false;
}
static bool is_any_session_ssr_state()
{
struct listnode *p_ses_node;
st_session_t *p_ses;
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
if (st_session_is_ssr_state(p_ses)) {
ALOGD("%s:[%d] session is in ssr state", __func__, p_ses->sm_handle);
return true;
}
}
return false;
}
static int check_and_transit_cpe_ses_to_ape(st_session_t *cur_ses)
{
st_session_t *p_ses = NULL;
struct listnode *node = NULL;
unsigned int num_sessions = 0;
struct st_vendor_info *ses_v_info = NULL;
struct listnode transit_sound_model_list;
int ret = -EINVAL;
/* Switch sessions from CPE to ADSP
* 1. If cur_ses is NULL, all existing sessions are switched to ADSP.
* 2. If cur_ses is valid, cur_ses is the session requested to transit.
* In such cases, switch sessions if they share same backend with
* cur_ses.
*/
ALOGD("%s: enter: current ses %p", __func__, cur_ses);
if (stdev->platform_lpi_enable != ST_PLATFORM_LPI_NONE) {
ret = 0;
goto exit;
}
if (0 == get_num_sessions_in_exec_mode(ST_EXEC_MODE_CPE)) {
ret = 0;
goto exit;
}
if (cur_ses && (cur_ses->exec_mode != ST_EXEC_MODE_CPE)) {
ALOGE("%s: Invalid mode set for current session %d",
__func__, cur_ses->exec_mode);
goto exit;
}
/* Initialize transit ape phrases/users for all CPE sessions */
list_for_each(node, &stdev->sound_model_list) {
p_ses = node_to_item(node, st_session_t, list_node);
if (p_ses->exec_mode == ST_EXEC_MODE_CPE) {
ses_v_info = p_ses->vendor_uuid_info;
ses_v_info->avail_transit_ape_phrases = ses_v_info->avail_ape_phrases;
ses_v_info->avail_transit_ape_users = ses_v_info->avail_ape_users;
}
}
list_init(&transit_sound_model_list);
/*
* check if the existing CPE sessions can be moved to ADSP
* Add sessions to be switched to transit list.
*/
list_for_each(node, &stdev->sound_model_list) {
p_ses = node_to_item(node, st_session_t, list_node);
if (p_ses->exec_mode == ST_EXEC_MODE_CPE) {
/* check for sessions to keep on WDSP mode if requested by APP */
if (ST_DET_LOW_POWER_MODE == p_ses->client_req_det_mode) {
ALOGV("%s:[%d] session is requested on WDSP mode, skip",
__func__, p_ses->sm_handle);
continue;
}
/* check for sessions that match backend with current session */
if (cur_ses && (cur_ses != p_ses) &&
!platform_stdev_check_backends_match(stdev->platform,
cur_ses->exec_mode,
cur_ses->hw_proxy_ses->hw_ses_current->st_device,
p_ses->exec_mode,
p_ses->hw_proxy_ses->hw_ses_current->st_device)) {
ALOGV("%s:[%d] session not sharing backend",
__func__, p_ses->sm_handle);
continue;
}
if (++num_sessions > stdev->max_ape_sessions) {
ALOGE("%s: ERROR. sessions exceed max supported", __func__);
goto exit;
}
ses_v_info = p_ses->vendor_uuid_info;
if (ses_v_info->exec_mode_cfg != EXEC_MODE_CFG_DYNAMIC) {
ALOGE("%s:[%d] ERROR. exec mode cfg %d not set to Dynamic",
__func__, p_ses->sm_handle, ses_v_info->exec_mode_cfg);
goto exit;
}
if (p_ses->sm_type == SOUND_MODEL_TYPE_KEYPHRASE) {
if (check_phrases_users_available(ses_v_info, p_ses->num_phrases,
p_ses->num_users, ST_EXEC_MODE_ADSP, true)) {
ses_v_info->avail_transit_ape_phrases -= p_ses->num_phrases;
ses_v_info->avail_transit_ape_users -= p_ses->num_users;
} else {
ALOGE("%s: ERROR. phrases/users exceed max supported", __func__);
goto exit;
}
}
/* Add the session to transit sound models list */
list_add_tail(&transit_sound_model_list,
&p_ses->transit_list_node);
}
}
ALOGV("%s: transit list empty: %s", __func__,
list_empty(&transit_sound_model_list) ? "true" : "false");
/*
* During switching, below order is followed to ensure teardown
* of all sessions happens first and then are started in new exec mode.
* This helps avoid issues during multisession backend switching.
* 1. Teardown the sessions by calling set_exec_mode with NONE.
* 2. Bring up the sessions in ADSP mode.
*/
/* Move sessions present in transit sound model list to NONE */
list_for_each(node, &transit_sound_model_list) {
p_ses = node_to_item(node, st_session_t, transit_list_node);
if (p_ses->sm_type == SOUND_MODEL_TYPE_KEYPHRASE)
update_available_phrase_info(p_ses, p_ses->phrase_sm, true);
ALOGD("%s:[%d] switch session to NONE", __func__, p_ses->sm_handle);
ret = st_session_set_exec_mode(p_ses, ST_EXEC_MODE_NONE);
if (ret) {
if (stdev->ssr_offline_received) {
goto ssr_exit;
} else {
/* TODO: Handle error during transitions */
ALOGE("%s:[%d] ERROR. could not set NONE", __func__, p_ses->sm_handle);
goto exit;
}
}
}
/* Move sessions present in transit sound model list to ADSP */
list_for_each(node, &transit_sound_model_list) {
p_ses = node_to_item(node, st_session_t, transit_list_node);
ALOGD("%s:[%d] switch session to ADSP mode", __func__, p_ses->sm_handle);
ret = st_session_set_exec_mode(p_ses, ST_EXEC_MODE_ADSP);
if (ret) {
if (stdev->ssr_offline_received) {
goto ssr_exit;
} else {
/* TODO: Handle error during transitions */
ALOGE("%s:[%d] ERROR. could not set ADSP mode", __func__, p_ses->sm_handle);
goto exit;
}
}
if (p_ses->sm_type == SOUND_MODEL_TYPE_KEYPHRASE)
update_available_phrase_info(p_ses, p_ses->phrase_sm, false);
}
ssr_exit:
/* Set target exec mode to be used during ssr online handling */
list_for_each(node, &transit_sound_model_list) {
p_ses = node_to_item(node, st_session_t, transit_list_node);
p_ses->ssr_transit_exec_mode = ST_EXEC_MODE_ADSP;
}
sthw_extn_lpma_notify_event(LPMA_EVENT_TRANSIT_CPE_TO_APE);
exit:
ALOGD("%s: exit: ret %d", __func__, ret);
return ret;
}
static int check_and_transit_ape_ses_to_cpe(st_session_t *cur_ses)
{
st_session_t *p_ses = NULL;
struct listnode *node;
unsigned int num_sessions = 0, max_sessions;
struct st_vendor_info *ses_v_info = NULL;
struct listnode transit_sound_model_list;
int ret = -EINVAL;
/* Switch sessions from ADSP to CPE
* 1. If cur_ses is NULL, all existing sessions are switched to CPE.
* 2. If cur_ses is valid, cur_ses is the session requested to transit.
* In such cases, switch sessions if they share same backend with
* cur_ses.
*/
ALOGD("%s: enter: current ses %p", __func__, cur_ses);
if (stdev->platform_lpi_enable != ST_PLATFORM_LPI_NONE) {
ret = 0;
goto exit;
}
if (0 == get_num_sessions_in_exec_mode(ST_EXEC_MODE_ADSP)) {
ret = 0;
goto exit;
}
if (cur_ses && (cur_ses->exec_mode != ST_EXEC_MODE_ADSP)) {
ALOGE("%s: Invalid mode set for current session %d",
__func__, cur_ses->exec_mode);
goto exit;
}
max_sessions = stdev->max_wdsp_sessions;
/* Initialize transit cpe phrases/users for all ADSP sessions */
list_for_each(node, &stdev->sound_model_list) {
p_ses = node_to_item(node, st_session_t, list_node);
if (p_ses->exec_mode == ST_EXEC_MODE_ADSP) {
ses_v_info = p_ses->vendor_uuid_info;
ses_v_info->avail_transit_cpe_phrases = ses_v_info->avail_cpe_phrases;
ses_v_info->avail_transit_cpe_users = ses_v_info->avail_cpe_users;
}
}
list_init(&transit_sound_model_list);
/*
* check if the existing ADSP sessions can be moved to CPE
* Add sessions to be switched to transit list.
*/
list_for_each(node, &stdev->sound_model_list) {
p_ses = node_to_item(node, st_session_t, list_node);
if (p_ses->exec_mode == ST_EXEC_MODE_ADSP) {
/* check for sessions to keep on ADSP mode if requested by APP */
if (ST_DET_HIGH_PERF_MODE == p_ses->client_req_det_mode) {
ALOGV("%s:[%d] session is requested on ADSP mode, skip",
__func__, p_ses->sm_handle);
continue;
}
/* check for sessions that match backend with current session */
if (cur_ses && (cur_ses != p_ses) &&
!platform_stdev_check_backends_match(stdev->platform,
cur_ses->exec_mode,
cur_ses->hw_proxy_ses->hw_ses_current->st_device,
p_ses->exec_mode,
p_ses->hw_proxy_ses->hw_ses_current->st_device)) {
ALOGV("%s:[%d] session not sharing backend",
__func__, p_ses->sm_handle);
continue;
}
if (++num_sessions > max_sessions) {
ALOGE("%s: ERROR. sessions exceed max supported", __func__);
goto exit;
}
ses_v_info = p_ses->vendor_uuid_info;
if (ses_v_info->exec_mode_cfg != EXEC_MODE_CFG_DYNAMIC) {
ALOGE("%s: [%d] ERROR. exec mode cfg %d not set to Dynamic",
__func__, p_ses->sm_handle, ses_v_info->exec_mode_cfg);
goto exit;
}
if (p_ses->sm_type == SOUND_MODEL_TYPE_KEYPHRASE) {
if (check_phrases_users_available(ses_v_info, p_ses->num_phrases,
p_ses->num_users, ST_EXEC_MODE_CPE, true)) {
ses_v_info->avail_transit_cpe_phrases -= p_ses->num_phrases;
ses_v_info->avail_transit_cpe_users -= p_ses->num_users;
} else {
ALOGE("%s: ERROR. phrases/users exceed max supported", __func__);
goto exit;
}
}
/* Add the session to transit sound models list */
list_add_tail(&transit_sound_model_list,
&p_ses->transit_list_node);
}
}
ALOGV("%s: transit list empty: %s", __func__,
list_empty(&transit_sound_model_list) ? "true" : "false");
/*
* During switching, below order is followed to ensure teardown
* of all sessions happens first and then are started in new exec mode.
* This helps avoid issues during multisession backend switching.
* 1. Teardown the sessions by calling set_exec_mode with NONE.
* 2. Bring up the sessions in CPE mode.
*/
/* Move sessions present in transit sound model list to NONE */
list_for_each(node, &transit_sound_model_list) {
p_ses = node_to_item(node, st_session_t, transit_list_node);
if (p_ses->sm_type == SOUND_MODEL_TYPE_KEYPHRASE)
update_available_phrase_info(p_ses, p_ses->phrase_sm, true);
ALOGD("%s:[%d] switch session to NONE", __func__, p_ses->sm_handle);
ret = st_session_set_exec_mode(p_ses, ST_EXEC_MODE_NONE);
if (ret) {
if (stdev->ssr_offline_received) {
goto ssr_exit;
} else {
/* TODO: Handle error during transitions */
ALOGE("%s:[%d] ERROR. could not set NONE", __func__, p_ses->sm_handle);
goto exit;
}
}
}
/* Move sessions present in transit sound model list to CPE */
list_for_each(node, &transit_sound_model_list) {
p_ses = node_to_item(node, st_session_t, transit_list_node);
ALOGD("%s:[%d] switch session to CPE mode", __func__, p_ses->sm_handle);
ret = st_session_set_exec_mode(p_ses, ST_EXEC_MODE_CPE);
if (ret) {
if (stdev->ssr_offline_received) {
goto ssr_exit;
} else {
/* TODO: Handle error during transitions */
ALOGE("%s:[%d] ERROR. could not set CPE mode", __func__, p_ses->sm_handle);
goto exit;
}
}
if (p_ses->sm_type == SOUND_MODEL_TYPE_KEYPHRASE)
update_available_phrase_info(p_ses, p_ses->phrase_sm, false);
}
ssr_exit:
/* Set target exec mode to be used during ssr online handling */
list_for_each(node, &transit_sound_model_list) {
p_ses = node_to_item(node, st_session_t, transit_list_node);
p_ses->ssr_transit_exec_mode = ST_EXEC_MODE_CPE;
}
sthw_extn_lpma_notify_event(LPMA_EVENT_TRANSIT_APE_TO_CPE);
exit:
ALOGD("%s: exit: ret %d", __func__, ret);
return ret;
}
static void notify_ssr_to_lpma(enum ssr_event_status event)
{
enum sthw_extn_lpma_event_type lpma_event;
switch (event) {
case CPE_STATUS_OFFLINE:
lpma_event = LPMA_EVENT_CPE_STATUS_OFFLINE;
break;
case CPE_STATUS_ONLINE:
lpma_event = LPMA_EVENT_CPE_STATUS_ONLINE;
break;
case SLPI_STATUS_OFFLINE:
lpma_event = LPMA_EVENT_SLPI_STATUS_OFFLINE;
break;
case SLPI_STATUS_ONLINE:
lpma_event = LPMA_EVENT_SLPI_STATUS_ONLINE;
break;
default:
return;
}
sthw_extn_lpma_notify_event(lpma_event);
}
static void handle_ssr_online(enum ssr_event_status event)
{
struct listnode *p_ses_node;
st_session_t *p_ses;
ALOGD("%s: Enter", __func__);
stdev->ssr_offline_received = false;
ATRACE_BEGIN("sthal: handle_ssr_online");
pthread_mutex_lock(&stdev->lock);
/* Events allowed: SND_CARD ONLINE or CPE ONLINE */
/*
* During SSR offline, all the custom topology info is wiped off from
* ADSP. Audio HAL can send these topologies during SSR online, but if
* Audio Hal handles SSR online event later than sthal handles SSR
* online, LSM session open fails with no matching topology found in
* ADSP. Fix it by sending common custom topologies, that includes LSM
* topologies, during SSR online.
*/
if (event == SND_CARD_STATUS_ONLINE) {
ALOGV("%s: sending common custom topology", __func__);
if (platform_stdev_send_common_topology(stdev->platform))
ALOGE("%s: sending common topology failed" ,__func__);
}
/* reload and reactive each previously active session */
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
st_session_ssr_online(p_ses, event);
}
if (sthw_extn_lpma_present())
notify_ssr_to_lpma(event);
pthread_cond_broadcast(&stdev->cond);
pthread_mutex_unlock(&stdev->lock);
ATRACE_END();
ALOGD("%s: Exit event %d", __func__, event);
}
static void handle_ssr_offline(enum ssr_event_status event)
{
struct listnode *p_ses_node;
st_session_t *p_ses;
ALOGD("%s: Enter", __func__);
stdev->ssr_offline_received = true;
ATRACE_BEGIN("sthal: handle_ssr_offline");
pthread_mutex_lock(&stdev->lock);
/* Events allowed: SND_CARD OFFLINE or CPE OFFLINE */
/* teardown each session */
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
st_session_ssr_offline(p_ses, event);
}
if (sthw_extn_lpma_present())
notify_ssr_to_lpma(event);
pthread_mutex_unlock(&stdev->lock);
ATRACE_END();
ALOGD("%s: Exit event %d", __func__, event);
}
static void check_sessions_transition(audio_event_type_t event_type)
{
int status;
if ((AUDIO_EVENT_PLAYBACK_STREAM_ACTIVE == event_type) ||
((AUDIO_EVENT_BATTERY_STATUS_CHANGED == event_type) && stdev->is_charging)) {
/* Transition to ADSP */
if (is_any_session_buffering() ||
is_any_session_ssr_state()) {
stdev->transit_dir = TRANSIT_CPE_TO_APE;
pthread_cond_signal(&stdev->transitions_cond);
} else {
status = check_and_transit_cpe_ses_to_ape(NULL);
if (status)
ALOGE("%s: Transition to ADSP failed, ignore", __func__);
}
} else if ((AUDIO_EVENT_PLAYBACK_STREAM_INACTIVE == event_type) ||
((AUDIO_EVENT_BATTERY_STATUS_CHANGED == event_type) && !stdev->is_charging)) {
stdev->transit_dir = TRANSIT_APE_TO_CPE;
pthread_cond_signal(&stdev->transitions_cond);
}
}
static void handle_audio_ec_ref_enabled(audio_event_info_t* config)
{
if (config == NULL) {
ALOGE("%s: null config event received!", __func__);
return;
}
ALOGD("%s: Enter", __func__);
pthread_mutex_lock(&stdev->lock);
stdev->audio_ec_enabled = config->u.audio_ec_ref_enabled;
pthread_mutex_unlock(&stdev->lock);
ALOGD("%s: Exit audio ec ref=%d", __func__, stdev->audio_ec_enabled);
}
static void handle_audio_concurrency(audio_event_type_t event_type,
audio_event_info_t* config)
{
struct listnode *p_ses_node = NULL, *node = NULL;
st_session_t *p_ses = NULL;
bool conc_allowed = false, lpi_changed = false, barge_in_mode = false;
unsigned int num_sessions = 0;
struct audio_device_info *item = NULL;
if (config == NULL) {
ALOGE("%s: Config is NULL, exiting", __func__);
return;
}
list_for_each (node, &config->device_info.devices) {
item = node_to_item(node, struct audio_device_info, list);
ALOGV("%s: Audio device = 0x%x", __func__, item->type);
}
/*
UC1:
1. start_recognition
2. audio record_active
3. audio_record_inactive
4. stop_recognition
UC1:
1. start_recognition
2. audio record_active
3. stop_recognition
4. audio_record_inactive
UC2:
1. audio_record_active
2. start_recognition
3. stop_recogntion
4. audio_record_inactive
UC3:
1. audio_record_active
2. start_recognition
3. audio_record_inactive
4. stop_recogntion
*/
pthread_mutex_lock(&stdev->lock);
num_sessions = get_num_sessions();
conc_allowed = platform_stdev_check_and_update_concurrency(stdev->platform,
event_type, config, num_sessions);
if (!conc_allowed)
sthw_extn_lpma_notify_event(LPMA_EVENT_AUDIO_CONCURRENCY);
if (!num_sessions) {
stdev->session_allowed = conc_allowed;
/*
* This is needed for the following usecase:
*
* 1. LPI and NLPI have different number of MICs (different devices).
* 2. ST session is stopped from app and unloaded while Tx active.
* 3. Tx stops.
* 4. ST session started again from app on LPI.
*
* The device disablement is missed in step 3 because the st_session was
* deinitialized. Thus, it is handled here.
*/
if (event_type == AUDIO_EVENT_CAPTURE_DEVICE_INACTIVE &&
!platform_stdev_is_dedicated_sva_path(stdev->platform) &&
platform_stdev_backend_reset_allowed(stdev->platform))
if (stdev->tx_concurrency_active == 0)
platform_stdev_disable_stale_devices(stdev->platform);
pthread_mutex_unlock(&stdev->lock);
return;
}
if (stdev->transit_to_adsp_on_playback)
check_sessions_transition(event_type);
if (platform_stdev_is_dedicated_sva_path(stdev->platform)) {
/*
* When SVA has dedicated tx path, ignore capture events when concurrency
* is allowed with this capture event.
* But need to handle capture events to pause VA sessions when concurrency
* is not allowed but previously allowed, and also do resume when concurrency
* is allowed but previously not allowed.
*/
if (event_type == AUDIO_EVENT_CAPTURE_DEVICE_INACTIVE ||
event_type == AUDIO_EVENT_CAPTURE_DEVICE_ACTIVE ||
event_type == AUDIO_EVENT_CAPTURE_STREAM_INACTIVE ||
event_type == AUDIO_EVENT_CAPTURE_STREAM_ACTIVE) {
if (conc_allowed != stdev->session_allowed) {
stdev->session_allowed = conc_allowed;
if (!conc_allowed) {
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
st_session_pause(p_ses);
}
} else {
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
st_session_resume(p_ses);
}
}
} else {
ALOGV("%s: Ignore capture events as sva has dedicated path", __func__);
}
if (!conc_allowed) {
pthread_mutex_unlock(&stdev->lock);
return;
}
}
} else {
/*
* 1. When concurrency is NOT allowed, pause VA sessions.
* 2. When concurrency is allowed on:
* a. audio capture enabling - do nothing as the tx paths can be shared
* for both VA and audio capture.
* b. audio capture disabling - due to tx path was previously disabled
* by audio capture usecase, so need to do session pause->resume
* to resume tx path.
*/
if (!conc_allowed) {
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
st_session_pause(p_ses);
}
} else {
if (event_type == AUDIO_EVENT_CAPTURE_DEVICE_INACTIVE) {
/*
* The reset_backend flag allows the backend device to be disabled. This should
* only be disallowed when in non-dedicated path mode and there is an active
* audio input stream.
*/
stdev->reset_backend = platform_stdev_backend_reset_allowed(stdev->platform);
st_hw_check_and_update_lpi(stdev, p_ses);
stdev->vad_enable = st_hw_check_vad_support(stdev, p_ses, stdev->lpi_enable);
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
ALOGD("%s:[%d] Capture device is disabled, pause SVA session",
__func__, p_ses->sm_handle);
st_session_pause(p_ses);
}
/*
* This is needed when the session goes to loaded state, then
* LPI/NLPI switch happens due to Rx event.
*/
platform_stdev_reset_backend_cfg(stdev->platform);
platform_stdev_disable_stale_devices(stdev->platform);
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
ALOGD("%s:[%d] Capture device is disabled, resume SVA session",
__func__, p_ses->sm_handle);
st_session_resume(p_ses);
}
} else if (event_type == AUDIO_EVENT_CAPTURE_DEVICE_ACTIVE) {
ALOGD("Audio HAL has a capture session ON, don't disable the device");
}
}
stdev->session_allowed = conc_allowed;
if (!conc_allowed) {
pthread_mutex_unlock(&stdev->lock);
return;
}
}
/*
* lpi/vad decision might have changed based on the capture and playback
* usecases becoming active/inactive. So check and update the lpi/vad
* configuration which will be used during device backend setting as part
* of session's start/resume.
*/
barge_in_mode = stdev->barge_in_mode;
st_hw_check_and_update_lpi(stdev, p_ses);
lpi_changed = stdev->lpi_enable != platform_get_lpi_mode(stdev->platform);
stdev->vad_enable = st_hw_check_vad_support(stdev, p_ses, stdev->lpi_enable);
/*
* Usecase 1: Playback enabled without display on/battery charging:
* lpi_changed = true, so transition occurs.
* Usecase 2: Playback enabled with display on/battery charging:
* lpi_changed = false, and barge_in_mode changes from false to
* true. Dynamic EC update or transition will occur depending
* on the flag.
* Usecase 3: Playback disabled without display on/battery charging:
* lpi_changed = true, so transition occurs.
* Usecase 4: Playback disabled with display on/battery charging:
* lpi_changed = false, and barge_in_mode changes from true to
* false. Dynamic EC update or transition will occur depending
* on the flag.
*/
if ((lpi_changed || barge_in_mode != stdev->barge_in_mode) &&
!is_any_session_buffering()) {
if (!lpi_changed && stdev->support_dynamic_ec_update) {
platform_stdev_update_ec_effect(stdev->platform,
stdev->barge_in_mode);
} else {
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
if (p_ses && p_ses->exec_mode == ST_EXEC_MODE_ADSP) {
ALOGD("%s:[%d] LPI: pause SVA session",
__func__, p_ses->sm_handle);
st_session_pause(p_ses);
}
}
platform_stdev_reset_backend_cfg(stdev->platform);
list_for_each(p_ses_node, &stdev->sound_model_list) {
p_ses = node_to_item(p_ses_node, st_session_t, list_node);
if (p_ses && p_ses->exec_mode == ST_EXEC_MODE_ADSP) {
ALOGD("%s:[%d] LPI: resume SVA session",
__func__, p_ses->sm_handle);
st_session_resume(p_ses);
}
}
}
}
/*
* The device can be disabled within this thread upon reception of the device
* active event because audio hal does not enable the device until after returning
* from this callback. After this thread exits, device disablement will be
* disallowed until the device inactive event is received.
*/
if (event_type == AUDIO_EVENT_CAPTURE_DEVICE_ACTIVE &&
!platform_stdev_is_dedicated_sva_path(stdev->platform))
stdev->reset_backend = platform_stdev_backend_reset_allowed(stdev->platform);
pthread_mutex_unlock(&stdev->lock);
ALOGV("%s: Exit", __func__);
}
static void *transitions_thread_loop(void * context __unused)
{
int status = 0;
int in_ssr = 0, ssr_retry = 0;
/*
* This thread is used for audio playback transitions from ADSP
* to WDSP. This is needed for hotword detections on ADSP because
* the app pauses music playback during buffering and resumes when
* buffering stops. An audio playback inactive event sends the
* signal to this thread to begin looping while playback is paused.
* When both buffering and and audio playback are inactive, it is
* assumed to be a stoppage of audio playback NOT due to a hotword
* detection.
* This also handles battery charging use case, when the battery
* is not in charging status, sessions need to be transited back
* to WDSP.
* These two cases will transition to WDSP.
*/
pthread_mutex_lock(&stdev->lock);
if (stdev->transit_wait_time <= 0)
stdev->transit_wait_time = TRANSIT_MIN_SLEEP_TIME_SEC;
while (!stdev->stop_transitions_thread_loop) {
/* Avoid spurious wake ups unncessarily acquiring wakelock later */
while ((stdev->transit_dir == TRANSIT_NONE) &&
!stdev->stop_transitions_thread_loop)
pthread_cond_wait(&stdev->transitions_cond, &stdev->lock);