modules/soundtrigger/sound_trigger_hw.c - platform/hardware/libhardware - Git at Google

 /*
  * 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.
  */

 #define LOG_TAG "sound_trigger_hw_default"
 /*#define LOG_NDEBUG 0*/

 #include <errno.h>
 #include <pthread.h>
 #include <sys/prctl.h>
 #include <cutils/log.h>

 #include <hardware/hardware.h>
 #include <system/sound_trigger.h>
 #include <hardware/sound_trigger.h>

 static const struct sound_trigger_properties hw_properties = {
         "The Android Open Source Project", // implementor
         "Sound Trigger stub HAL", // description
         1, // version
         { 0xed7a7d60, 0xc65e, 0x11e3, 0x9be4, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // uuid
         1, // max_sound_models
         1, // max_key_phrases
         1, // max_users
         RECOGNITION_MODE_VOICE_TRIGGER, // recognition_modes
         false, // capture_transition
         0, // max_buffer_ms
         false, // concurrent_capture
         false, // trigger_in_event
         0 // power_consumption_mw
 };

 struct stub_sound_trigger_device {
     struct sound_trigger_hw_device device;
     sound_model_handle_t model_handle;
     recognition_callback_t recognition_callback;
     void *recognition_cookie;
     sound_model_callback_t sound_model_callback;
     void *sound_model_cookie;
     pthread_t callback_thread;
     pthread_mutex_t lock;
     pthread_cond_t  cond;
 };


 static void *callback_thread_loop(void *context)
 {
     struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)context;
     ALOGI("%s", __func__);

     prctl(PR_SET_NAME, (unsigned long)"sound trigger callback", 0, 0, 0);

     pthread_mutex_lock(&stdev->lock);
     if (stdev->recognition_callback == NULL) {
         goto exit;
     }
     struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
     ts.tv_sec += 3;
     ALOGI("%s wait 3 sec", __func__);
     int rc = pthread_cond_timedwait(&stdev->cond, &stdev->lock, &ts);
     if (rc == ETIMEDOUT && stdev->recognition_callback != NULL) {
         char *data = (char *)calloc(1, sizeof(struct sound_trigger_phrase_recognition_event) + 1);
         struct sound_trigger_phrase_recognition_event *event =
                 (struct sound_trigger_phrase_recognition_event *)data;
         event->common.status = RECOGNITION_STATUS_SUCCESS;
         event->common.type = SOUND_MODEL_TYPE_KEYPHRASE;
         event->common.model = stdev->model_handle;
         event->num_phrases = 1;
         event->phrase_extras[0].recognition_modes = RECOGNITION_MODE_VOICE_TRIGGER;
         event->phrase_extras[0].confidence_level = 100;
         event->phrase_extras[0].num_levels = 1;
         event->phrase_extras[0].levels[0].level = 100;
         event->phrase_extras[0].levels[0].user_id = 0;
         event->common.data_offset = sizeof(struct sound_trigger_phrase_recognition_event);
         event->common.data_size = 1;
         data[event->common.data_offset] = 8;
         ALOGI("%s send callback model %d", __func__, stdev->model_handle);
         stdev->recognition_callback(&event->common, stdev->recognition_cookie);
         free(data);
     } else {
         ALOGI("%s abort recognition model %d", __func__, stdev->model_handle);
     }
     stdev->recognition_callback = NULL;

 exit:
     pthread_mutex_unlock(&stdev->lock);

     return NULL;
 }

 static int stdev_get_properties(const struct sound_trigger_hw_device *dev,
                                 struct sound_trigger_properties *properties)
 {
     struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)dev;

     ALOGI("%s", __func__);
     if (properties == NULL)
         return -EINVAL;
     memcpy(properties, &hw_properties, sizeof(struct sound_trigger_properties));
     return 0;
 }

 static int stdev_load_sound_model(const struct sound_trigger_hw_device *dev,
                                   struct sound_trigger_sound_model *sound_model,
                                   sound_model_callback_t callback,
                                   void *cookie,
                                   sound_model_handle_t *handle)
 {
     struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)dev;
     int status = 0;

     ALOGI("%s stdev %p", __func__, stdev);
     pthread_mutex_lock(&stdev->lock);
     if (handle == NULL || sound_model == NULL) {
         status = -EINVAL;
         goto exit;
     }
     if (sound_model->data_size == 0 ||
             sound_model->data_offset < sizeof(struct sound_trigger_sound_model)) {
         status = -EINVAL;
         goto exit;
     }

     if (stdev->model_handle == 1) {
         status = -ENOSYS;
         goto exit;
     }
     char *data = (char *)sound_model + sound_model->data_offset;
     ALOGI("%s data size %d data %d - %d", __func__,
           sound_model->data_size, data[0], data[sound_model->data_size - 1]);
     stdev->model_handle = 1;
     stdev->sound_model_callback = callback;
     stdev->sound_model_cookie = cookie;

     *handle = stdev->model_handle;

 exit:
     pthread_mutex_unlock(&stdev->lock);
     return status;
 }

 static int stdev_unload_sound_model(const struct sound_trigger_hw_device *dev,
                                     sound_model_handle_t handle)
 {
     struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)dev;
     int status = 0;

     ALOGI("%s handle %d", __func__, handle);
     pthread_mutex_lock(&stdev->lock);
     if (handle != 1) {
         status = -EINVAL;
         goto exit;
     }
     if (stdev->model_handle == 0) {
         status = -ENOSYS;
         goto exit;
     }
     stdev->model_handle = 0;
     if (stdev->recognition_callback != NULL) {
         stdev->recognition_callback = NULL;
         pthread_cond_signal(&stdev->cond);
         pthread_mutex_unlock(&stdev->lock);
         pthread_join(stdev->callback_thread, (void **) NULL);
         pthread_mutex_lock(&stdev->lock);
     }

 exit:
     pthread_mutex_unlock(&stdev->lock);
     return status;
 }

 static int stdev_start_recognition(const struct sound_trigger_hw_device *dev,
                                    sound_model_handle_t sound_model_handle,
                                    const struct sound_trigger_recognition_config *config,
                                    recognition_callback_t callback,
                                    void *cookie)
 {
     struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)dev;
     int status = 0;
     ALOGI("%s sound model %d", __func__, sound_model_handle);
     pthread_mutex_lock(&stdev->lock);
     if (stdev->model_handle != sound_model_handle) {
         status = -ENOSYS;
         goto exit;
     }
     if (stdev->recognition_callback != NULL) {
         status = -ENOSYS;
         goto exit;
     }
     if (config->data_size != 0) {
         char *data = (char *)config + config->data_offset;
         ALOGI("%s data size %d data %d - %d", __func__,
               config->data_size, data[0], data[config->data_size - 1]);
     }

     stdev->recognition_callback = callback;
     stdev->recognition_cookie = cookie;
     pthread_create(&stdev->callback_thread, (const pthread_attr_t *) NULL,
                         callback_thread_loop, stdev);
 exit:
     pthread_mutex_unlock(&stdev->lock);
     return status;
 }

 static int stdev_stop_recognition(const struct sound_trigger_hw_device *dev,
                                  sound_model_handle_t sound_model_handle)
 {
     struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)dev;
     int status = 0;
     ALOGI("%s sound model %d", __func__, sound_model_handle);
     pthread_mutex_lock(&stdev->lock);
     if (stdev->model_handle != sound_model_handle) {
         status = -ENOSYS;
         goto exit;
     }
     if (stdev->recognition_callback == NULL) {
         status = -ENOSYS;
         goto exit;
     }
     stdev->recognition_callback = NULL;
     pthread_cond_signal(&stdev->cond);
     pthread_mutex_unlock(&stdev->lock);
     pthread_join(stdev->callback_thread, (void **) NULL);
     pthread_mutex_lock(&stdev->lock);

 exit:
     pthread_mutex_unlock(&stdev->lock);
     return status;
 }


 static int stdev_close(hw_device_t *device)
 {
     free(device);
     return 0;
 }

 static int stdev_open(const hw_module_t* module, const char* name,
                      hw_device_t** device)
 {
     struct stub_sound_trigger_device *stdev;
     int ret;

     if (strcmp(name, SOUND_TRIGGER_HARDWARE_INTERFACE) != 0)
         return -EINVAL;

     stdev = calloc(1, sizeof(struct stub_sound_trigger_device));
     if (!stdev)
         return -ENOMEM;

     stdev->device.common.tag = HARDWARE_DEVICE_TAG;
     stdev->device.common.version = SOUND_TRIGGER_DEVICE_API_VERSION_1_0;
     stdev->device.common.module = (struct hw_module_t *) module;
     stdev->device.common.close = stdev_close;
     stdev->device.get_properties = stdev_get_properties;
     stdev->device.load_sound_model = stdev_load_sound_model;
     stdev->device.unload_sound_model = stdev_unload_sound_model;
     stdev->device.start_recognition = stdev_start_recognition;
     stdev->device.stop_recognition = stdev_stop_recognition;

     pthread_mutex_init(&stdev->lock, (const pthread_mutexattr_t *) NULL);
     pthread_cond_init(&stdev->cond, (const pthread_condattr_t *) NULL);

     *device = &stdev->device.common;

     return 0;
 }

 static struct hw_module_methods_t hal_module_methods = {
     .open = stdev_open,
 };

 struct sound_trigger_module HAL_MODULE_INFO_SYM = {
     .common = {
         .tag = HARDWARE_MODULE_TAG,
         .module_api_version = SOUND_TRIGGER_MODULE_API_VERSION_1_0,
         .hal_api_version = HARDWARE_HAL_API_VERSION,
         .id = SOUND_TRIGGER_HARDWARE_MODULE_ID,
         .name = "Default sound trigger HAL",
         .author = "The Android Open Source Project",
         .methods = &hal_module_methods,
     },
 };
	/*
	* 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.
	*/

	#define LOG_TAG "sound_trigger_hw_default"
	/#define LOG_NDEBUG 0/

	#include <errno.h>
	#include <pthread.h>
	#include <sys/prctl.h>
	#include <cutils/log.h>

	#include <hardware/hardware.h>
	#include <system/sound_trigger.h>
	#include <hardware/sound_trigger.h>

	static const struct sound_trigger_properties hw_properties = {
	"The Android Open Source Project", // implementor
	"Sound Trigger stub HAL", // description
	1, // version
	{ 0xed7a7d60, 0xc65e, 0x11e3, 0x9be4, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // uuid
	1, // max_sound_models
	1, // max_key_phrases
	1, // max_users
	RECOGNITION_MODE_VOICE_TRIGGER, // recognition_modes
	false, // capture_transition
	0, // max_buffer_ms
	false, // concurrent_capture
	false, // trigger_in_event
	0 // power_consumption_mw
	};

	struct stub_sound_trigger_device {
	struct sound_trigger_hw_device device;
	sound_model_handle_t model_handle;
	recognition_callback_t recognition_callback;
	void *recognition_cookie;
	sound_model_callback_t sound_model_callback;
	void *sound_model_cookie;
	pthread_t callback_thread;
	pthread_mutex_t lock;
	pthread_cond_t cond;
	};


	static void callback_thread_loop(void context)
	{
	struct stub_sound_trigger_device stdev = (struct stub_sound_trigger_device )context;
	ALOGI("%s", __func__);

	prctl(PR_SET_NAME, (unsigned long)"sound trigger callback", 0, 0, 0);

	pthread_mutex_lock(&stdev->lock);
	if (stdev->recognition_callback == NULL) {
	goto exit;
	}
	struct timespec ts;
	clock_gettime(CLOCK_REALTIME, &ts);
	ts.tv_sec += 3;
	ALOGI("%s wait 3 sec", __func__);
	int rc = pthread_cond_timedwait(&stdev->cond, &stdev->lock, &ts);
	if (rc == ETIMEDOUT && stdev->recognition_callback != NULL) {
	char data = (char )calloc(1, sizeof(struct sound_trigger_phrase_recognition_event) + 1);
	struct sound_trigger_phrase_recognition_event *event =
	(struct sound_trigger_phrase_recognition_event *)data;
	event->common.status = RECOGNITION_STATUS_SUCCESS;
	event->common.type = SOUND_MODEL_TYPE_KEYPHRASE;
	event->common.model = stdev->model_handle;
	event->num_phrases = 1;
	event->phrase_extras[0].recognition_modes = RECOGNITION_MODE_VOICE_TRIGGER;
	event->phrase_extras[0].confidence_level = 100;
	event->phrase_extras[0].num_levels = 1;
	event->phrase_extras[0].levels[0].level = 100;
	event->phrase_extras[0].levels[0].user_id = 0;
	event->common.data_offset = sizeof(struct sound_trigger_phrase_recognition_event);
	event->common.data_size = 1;
	data[event->common.data_offset] = 8;
	ALOGI("%s send callback model %d", __func__, stdev->model_handle);
	stdev->recognition_callback(&event->common, stdev->recognition_cookie);
	free(data);
	} else {
	ALOGI("%s abort recognition model %d", __func__, stdev->model_handle);
	}
	stdev->recognition_callback = NULL;

	exit:
	pthread_mutex_unlock(&stdev->lock);

	return NULL;
	}

	static int stdev_get_properties(const struct sound_trigger_hw_device *dev,
	struct sound_trigger_properties *properties)
	{
	struct stub_sound_trigger_device stdev = (struct stub_sound_trigger_device )dev;

	ALOGI("%s", __func__);
	if (properties == NULL)
	return -EINVAL;
	memcpy(properties, &hw_properties, sizeof(struct sound_trigger_properties));
	return 0;
	}

	static int stdev_load_sound_model(const struct sound_trigger_hw_device *dev,
	struct sound_trigger_sound_model *sound_model,
	sound_model_callback_t callback,
	void *cookie,
	sound_model_handle_t *handle)
	{
	struct stub_sound_trigger_device stdev = (struct stub_sound_trigger_device )dev;
	int status = 0;

	ALOGI("%s stdev %p", __func__, stdev);
	pthread_mutex_lock(&stdev->lock);
	if (handle == NULL \|\| sound_model == NULL) {
	status = -EINVAL;
	goto exit;
	}
	if (sound_model->data_size == 0 \|\|
	sound_model->data_offset < sizeof(struct sound_trigger_sound_model)) {
	status = -EINVAL;
	goto exit;
	}

	if (stdev->model_handle == 1) {
	status = -ENOSYS;
	goto exit;
	}
	char data = (char )sound_model + sound_model->data_offset;
	ALOGI("%s data size %d data %d - %d", __func__,
	sound_model->data_size, data[0], data[sound_model->data_size - 1]);
	stdev->model_handle = 1;
	stdev->sound_model_callback = callback;
	stdev->sound_model_cookie = cookie;

	*handle = stdev->model_handle;

	exit:
	pthread_mutex_unlock(&stdev->lock);
	return status;
	}

	static int stdev_unload_sound_model(const struct sound_trigger_hw_device *dev,
	sound_model_handle_t handle)
	{
	struct stub_sound_trigger_device stdev = (struct stub_sound_trigger_device )dev;
	int status = 0;

	ALOGI("%s handle %d", __func__, handle);
	pthread_mutex_lock(&stdev->lock);
	if (handle != 1) {
	status = -EINVAL;
	goto exit;
	}
	if (stdev->model_handle == 0) {
	status = -ENOSYS;
	goto exit;
	}
	stdev->model_handle = 0;
	if (stdev->recognition_callback != NULL) {
	stdev->recognition_callback = NULL;
	pthread_cond_signal(&stdev->cond);
	pthread_mutex_unlock(&stdev->lock);
	pthread_join(stdev->callback_thread, (void **) NULL);
	pthread_mutex_lock(&stdev->lock);
	}

	exit:
	pthread_mutex_unlock(&stdev->lock);
	return status;
	}

	static int stdev_start_recognition(const struct sound_trigger_hw_device *dev,
	sound_model_handle_t sound_model_handle,
	const struct sound_trigger_recognition_config *config,
	recognition_callback_t callback,
	void *cookie)
	{
	struct stub_sound_trigger_device stdev = (struct stub_sound_trigger_device )dev;
	int status = 0;
	ALOGI("%s sound model %d", __func__, sound_model_handle);
	pthread_mutex_lock(&stdev->lock);
	if (stdev->model_handle != sound_model_handle) {
	status = -ENOSYS;
	goto exit;
	}
	if (stdev->recognition_callback != NULL) {
	status = -ENOSYS;
	goto exit;
	}
	if (config->data_size != 0) {
	char data = (char )config + config->data_offset;
	ALOGI("%s data size %d data %d - %d", __func__,
	config->data_size, data[0], data[config->data_size - 1]);
	}

	stdev->recognition_callback = callback;
	stdev->recognition_cookie = cookie;
	pthread_create(&stdev->callback_thread, (const pthread_attr_t *) NULL,
	callback_thread_loop, stdev);
	exit:
	pthread_mutex_unlock(&stdev->lock);
	return status;
	}

	static int stdev_stop_recognition(const struct sound_trigger_hw_device *dev,
	sound_model_handle_t sound_model_handle)
	{
	struct stub_sound_trigger_device stdev = (struct stub_sound_trigger_device )dev;
	int status = 0;
	ALOGI("%s sound model %d", __func__, sound_model_handle);
	pthread_mutex_lock(&stdev->lock);
	if (stdev->model_handle != sound_model_handle) {
	status = -ENOSYS;
	goto exit;
	}
	if (stdev->recognition_callback == NULL) {
	status = -ENOSYS;
	goto exit;
	}
	stdev->recognition_callback = NULL;
	pthread_cond_signal(&stdev->cond);
	pthread_mutex_unlock(&stdev->lock);
	pthread_join(stdev->callback_thread, (void **) NULL);
	pthread_mutex_lock(&stdev->lock);

	exit:
	pthread_mutex_unlock(&stdev->lock);
	return status;
	}


	static int stdev_close(hw_device_t *device)
	{
	free(device);
	return 0;
	}

	static int stdev_open(const hw_module_t* module, const char* name,
	hw_device_t** device)
	{
	struct stub_sound_trigger_device *stdev;
	int ret;

	if (strcmp(name, SOUND_TRIGGER_HARDWARE_INTERFACE) != 0)
	return -EINVAL;

	stdev = calloc(1, sizeof(struct stub_sound_trigger_device));
	if (!stdev)
	return -ENOMEM;

	stdev->device.common.tag = HARDWARE_DEVICE_TAG;
	stdev->device.common.version = SOUND_TRIGGER_DEVICE_API_VERSION_1_0;
	stdev->device.common.module = (struct hw_module_t *) module;
	stdev->device.common.close = stdev_close;
	stdev->device.get_properties = stdev_get_properties;
	stdev->device.load_sound_model = stdev_load_sound_model;
	stdev->device.unload_sound_model = stdev_unload_sound_model;
	stdev->device.start_recognition = stdev_start_recognition;
	stdev->device.stop_recognition = stdev_stop_recognition;

	pthread_mutex_init(&stdev->lock, (const pthread_mutexattr_t *) NULL);
	pthread_cond_init(&stdev->cond, (const pthread_condattr_t *) NULL);

	*device = &stdev->device.common;

	return 0;
	}

	static struct hw_module_methods_t hal_module_methods = {
	.open = stdev_open,
	};

	struct sound_trigger_module HAL_MODULE_INFO_SYM = {
	.common = {
	.tag = HARDWARE_MODULE_TAG,
	.module_api_version = SOUND_TRIGGER_MODULE_API_VERSION_1_0,
	.hal_api_version = HARDWARE_HAL_API_VERSION,
	.id = SOUND_TRIGGER_HARDWARE_MODULE_ID,
	.name = "Default sound trigger HAL",
	.author = "The Android Open Source Project",
	.methods = &hal_module_methods,
	},
	};