gstreamer/subprojects/gst-plugins-bad/sys/androidmedia/gst-android-hardware-sensor.c

833 lines
25 KiB
C

/*
* Copyright (C) 2016 SurroundIO
* Author: Martin Kelly <martin@surround.io>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* The UNION_CAST macro is copyright:
* Copyright (C) 2008-2016 Matt Gallagher ( http://cocoawithlove.com ).
* All rights reserved.
* Permission to use, copy, modify, and/or distribute this software for any purpose
* with or without fee is hereby granted, provided that the above copyright notice
* and this permission notice appear in all copies.
* THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
* THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <gmodule.h>
#include "gstjniutils.h"
#include "gst-android-hardware-sensor.h"
static jobject (*gst_android_get_application_context) (void) = NULL;
GST_DEBUG_CATEGORY_STATIC (ahs_debug);
#define GST_CAT_DEFAULT ahs_debug
/*
* See:
* http://www.cocoawithlove.com/2008/04/using-pointers-to-recast-in-c-is-bad.html
* for details.
*/
#define UNION_CAST(x, destType) \
(((union {__typeof__(x) a; destType b;})x).b)
static struct
{
jclass klass;
jstring SENSOR_SERVICE;
jmethodID getSystemService;
} android_content_context = {
0};
static struct
{
jclass klass;
jfieldID accuracy;
jfieldID values;
} android_hardware_sensor_event = {
0};
static struct
{
jclass klass;
jmethodID getDefaultSensor;;
jmethodID registerListener;
jmethodID unregisterListener;
} android_hardware_sensor_manager = {
0};
static struct
{
jclass klass;
jmethodID constructor;
} org_freedesktop_gstreamer_androidmedia_gstahscallback = {
0};
GHashTable *sensor_sizes = NULL;
static void
gst_ah_sensor_sensor_sizes_init (void)
{
gint i;
static struct
{
gint type;
gsize size;
} types[] = {
{
AHS_SENSOR_TYPE_ACCELEROMETER, sizeof (GstAHSAccelerometerValues)}
, {
AHS_SENSOR_TYPE_AMBIENT_TEMPERATURE,
sizeof (GstAHSAmbientTemperatureValues)}
, {
AHS_SENSOR_TYPE_GAME_ROTATION_VECTOR,
sizeof (GstAHSGameRotationVectorValues)}
, {
AHS_SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR,
sizeof (GstAHSGeomagneticRotationVectorValues)}
, {
AHS_SENSOR_TYPE_GRAVITY, sizeof (GstAHSGravityValues)}
, {
AHS_SENSOR_TYPE_GYROSCOPE, sizeof (GstAHSGyroscopeValues)}
, {
AHS_SENSOR_TYPE_GYROSCOPE_UNCALIBRATED,
sizeof (GstAHSGyroscopeUncalibratedValues)}
, {
AHS_SENSOR_TYPE_HEART_RATE, sizeof (GstAHSHeartRateValues)}
, {
AHS_SENSOR_TYPE_LIGHT, sizeof (GstAHSLightValues)}
, {
AHS_SENSOR_TYPE_LINEAR_ACCELERATION,
sizeof (GstAHSLinearAccelerationValues)}
, {
AHS_SENSOR_TYPE_MAGNETIC_FIELD, sizeof (GstAHSMagneticFieldValues)}
, {
AHS_SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED,
sizeof (GstAHSMagneticFieldUncalibratedValues)}
, {
AHS_SENSOR_TYPE_ORIENTATION, sizeof (GstAHSOrientationValues)}
, {
AHS_SENSOR_TYPE_PRESSURE, sizeof (GstAHSPressureValues)}
, {
AHS_SENSOR_TYPE_PROXIMITY, sizeof (GstAHSProximityValues)}
, {
AHS_SENSOR_TYPE_RELATIVE_HUMIDITY, sizeof (GstAHSRelativeHumidityValues)}
, {
AHS_SENSOR_TYPE_ROTATION_VECTOR, sizeof (GstAHSRotationVectorValues)}
, {
AHS_SENSOR_TYPE_STEP_COUNTER, sizeof (GstAHSStepCounterValues)}
, {
AHS_SENSOR_TYPE_STEP_DETECTOR, sizeof (GstAHSStepDetectorValues)}
,};
g_assert_null (sensor_sizes);
sensor_sizes = g_hash_table_new (g_int_hash, g_int_equal);
for (i = 0; i < G_N_ELEMENTS (types); i++)
g_hash_table_insert (sensor_sizes, &types[i].type, &types[i].size);
}
static void
gst_ah_sensor_sensor_sizes_deinit (void)
{
g_hash_table_unref (sensor_sizes);
sensor_sizes = NULL;
}
gsize
gst_ah_sensor_get_sensor_data_size (gint sensor_type)
{
return *((gsize *) g_hash_table_lookup (sensor_sizes, &sensor_type));
}
static void
gst_ah_sensor_on_sensor_changed (JNIEnv * env, jclass klass,
jobject sensor_event, jlong callback, jlong user_data)
{
GstAHSensorCallback cb = (GstAHSensorCallback) (gsize) callback;
if (cb)
cb (sensor_event, (gpointer) (gsize) user_data);
}
static void
gst_ah_sensor_on_accuracy_changed (JNIEnv * env, jclass klass,
jobject sensor, jint accuracy, jlong callback, jlong user_data)
{
GstAHSAccuracyCallback cb = (GstAHSAccuracyCallback) (gsize) callback;
if (cb)
cb (sensor, accuracy, (gpointer) (gsize) user_data);
}
static gboolean natives_registered = FALSE;
static JNINativeMethod native_methods[] = {
{(gchar *) "gst_ah_sensor_on_sensor_changed",
(gchar *) "(Landroid/hardware/SensorEvent;JJ)V",
(void *) gst_ah_sensor_on_sensor_changed},
{(gchar *) "gst_ah_sensor_on_accuracy_changed",
(gchar *) "(Landroid/hardware/Sensor;IJJ)V",
(void *) gst_ah_sensor_on_accuracy_changed}
};
static gboolean
_init_classes (void)
{
gint32 delay;
JNIEnv *env = gst_amc_jni_get_env ();
GError *err = NULL;
jclass klass;
jfieldID fieldID;
GModule *module;
gboolean success;
gint32 type;
/*
* Lookup the Android function to get an Android context. This function will
* be provided when the plugin is built via ndk-build.
*/
module = g_module_open (NULL, G_MODULE_BIND_LOCAL);
if (!module)
goto failed;
success = g_module_symbol (module, "gst_android_get_application_context",
(gpointer *) & gst_android_get_application_context);
if (!success || !gst_android_get_application_context)
goto failed;
g_module_close (module);
/* android.content.Context */
klass = android_content_context.klass = gst_amc_jni_get_class (env, &err,
"android/content/Context");
if (!klass)
goto failed;
android_content_context.getSystemService =
gst_amc_jni_get_method_id (env, &err, klass, "getSystemService",
"(Ljava/lang/String;)Ljava/lang/Object;");
if (!android_content_context.getSystemService)
goto failed;
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "SENSOR_SERVICE",
"Ljava/lang/String;");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_object_field (env, &err, klass, fieldID,
&android_content_context.SENSOR_SERVICE))
goto failed;
android_content_context.SENSOR_SERVICE =
gst_amc_jni_object_make_global (env,
android_content_context.SENSOR_SERVICE);
if (!android_content_context.SENSOR_SERVICE)
goto failed;
/* android.hardware.SensorEvent */
klass = android_hardware_sensor_event.klass =
gst_amc_jni_get_class (env, &err, "android/hardware/SensorEvent");
if (!klass)
goto failed;
android_hardware_sensor_event.accuracy =
gst_amc_jni_get_field_id (env, &err, klass, "accuracy", "I");
if (!android_hardware_sensor_event.accuracy)
goto failed;
android_hardware_sensor_event.values =
gst_amc_jni_get_field_id (env, &err, klass, "values", "[F");
if (!android_hardware_sensor_event.values)
goto failed;
/* android.hardware.SensorManager */
klass = android_hardware_sensor_manager.klass =
gst_amc_jni_get_class (env, &err, "android/hardware/SensorManager");
if (!klass)
goto failed;
android_hardware_sensor_manager.getDefaultSensor =
gst_amc_jni_get_method_id (env, &err, klass,
"getDefaultSensor", "(I)Landroid/hardware/Sensor;");
if (!android_hardware_sensor_manager.getDefaultSensor)
goto failed;
android_hardware_sensor_manager.registerListener =
gst_amc_jni_get_method_id (env, &err, klass,
"registerListener",
"(Landroid/hardware/SensorEventListener;Landroid/hardware/Sensor;I)Z");
if (!android_hardware_sensor_manager.registerListener)
goto failed;
android_hardware_sensor_manager.unregisterListener =
gst_amc_jni_get_method_id (env, &err, klass,
"unregisterListener", "(Landroid/hardware/SensorEventListener;)V");
if (!android_hardware_sensor_manager.unregisterListener)
goto failed;
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "SENSOR_DELAY_FASTEST",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &delay))
goto failed;
if (delay != AHS_SENSOR_DELAY_FASTEST) {
GST_ERROR ("SENSOR_DELAY_FASTEST has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "SENSOR_DELAY_GAME",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &delay))
goto failed;
if (delay != AHS_SENSOR_DELAY_GAME) {
GST_ERROR ("SENSOR_DELAY_GAME has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "SENSOR_DELAY_NORMAL",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &delay))
goto failed;
if (delay != AHS_SENSOR_DELAY_NORMAL) {
GST_ERROR ("SENSOR_DELAY_NORMAL has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "SENSOR_DELAY_UI",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &delay))
goto failed;
if (delay != AHS_SENSOR_DELAY_UI) {
GST_ERROR ("SENSOR_DELAY_UI has changed value");
goto failed;
}
/* android.hardware.Sensor */
klass = gst_amc_jni_get_class (env, &err, "android/hardware/Sensor");
if (!klass)
goto failed;
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_ACCELEROMETER",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_ACCELEROMETER) {
GST_ERROR ("TYPE_ACCELEROMETER has changed value");
goto failed;
}
fieldID = gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_AMBIENT_TEMPERATURE", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_AMBIENT_TEMPERATURE) {
GST_ERROR ("TYPE_AMBIENT_TEMPERATURE has changed value");
goto failed;
}
fieldID = gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_GAME_ROTATION_VECTOR", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_GAME_ROTATION_VECTOR) {
GST_ERROR ("TYPE_GAME_ROTATION_VECTOR has changed value");
goto failed;
}
fieldID = gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_GEOMAGNETIC_ROTATION_VECTOR", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR) {
GST_ERROR ("TYPE_GEOMAGNETIC_ROTATION_VECTOR has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_GRAVITY", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_GRAVITY) {
GST_ERROR ("TYPE_GRAVITY has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_GYROSCOPE", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_GYROSCOPE) {
GST_ERROR ("TYPE_GYROSCOPE has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_GYROSCOPE_UNCALIBRATED", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_GYROSCOPE_UNCALIBRATED) {
GST_ERROR ("TYPE_GYROSCOPE_UNCALIBRATED has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_HEART_RATE",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_HEART_RATE) {
GST_ERROR ("TYPE_HEART_RATE has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_LIGHT", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_LIGHT) {
GST_ERROR ("TYPE_LIGHT has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_LINEAR_ACCELERATION", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_LINEAR_ACCELERATION) {
GST_ERROR ("TYPE_LINEAR_ACCELERATION has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_MAGNETIC_FIELD",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_MAGNETIC_FIELD) {
GST_ERROR ("TYPE_MAGNETIC_FIELD has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_MAGNETIC_FIELD_UNCALIBRATED", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED) {
GST_ERROR ("TYPE_MAGNETIC_FIELD_UNCALIBRATED has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_ORIENTATION",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_ORIENTATION) {
GST_ERROR ("TYPE_ORIENTATION has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_PRESSURE", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_PRESSURE) {
GST_ERROR ("TYPE_PRESSURE has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_PROXIMITY", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_PROXIMITY) {
GST_ERROR ("TYPE_PROXIMITY has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_RELATIVE_HUMIDITY", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_RELATIVE_HUMIDITY) {
GST_ERROR ("TYPE_RELATIVE_HUMIDITY has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_ROTATION_VECTOR",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_ROTATION_VECTOR) {
GST_ERROR ("TYPE_ROTATION_VECTOR has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass,
"TYPE_SIGNIFICANT_MOTION", "I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_SIGNIFICANT_MOTION) {
GST_ERROR ("TYPE_SIGNIFICANT_MOTION has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_STEP_COUNTER",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_STEP_COUNTER) {
GST_ERROR ("TYPE_STEP_COUNTER has changed value");
goto failed;
}
fieldID =
gst_amc_jni_get_static_field_id (env, &err, klass, "TYPE_STEP_DETECTOR",
"I");
if (!fieldID)
goto failed;
if (!gst_amc_jni_get_static_int_field (env, &err, klass, fieldID, &type))
goto failed;
if (type != AHS_SENSOR_TYPE_STEP_DETECTOR) {
GST_ERROR ("TYPE_STEP_DETECTOR has changed value");
goto failed;
}
/* org.freedesktop.gstreamer.androidmedia.GstAhsCallback */
if (!org_freedesktop_gstreamer_androidmedia_gstahscallback.klass) {
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass =
gst_amc_jni_get_application_class (env,
"org/freedesktop/gstreamer/androidmedia/GstAhsCallback", &err);
}
if (!org_freedesktop_gstreamer_androidmedia_gstahscallback.klass)
goto failed;
org_freedesktop_gstreamer_androidmedia_gstahscallback.constructor =
gst_amc_jni_get_method_id (env, &err,
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass, "<init>",
"(JJJ)V");
if (!org_freedesktop_gstreamer_androidmedia_gstahscallback.constructor)
goto failed;
if ((*env)->RegisterNatives (env,
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass,
native_methods, G_N_ELEMENTS (native_methods))) {
GST_ERROR ("Failed to register native methods for GstAhsCallback");
goto failed;
}
natives_registered = TRUE;
return TRUE;
failed:
if (err) {
GST_ERROR ("Failed to initialize Android classes: %s", err->message);
g_clear_error (&err);
}
return FALSE;
}
gboolean
gst_android_hardware_sensor_init (void)
{
GST_DEBUG_CATEGORY_INIT (ahs_debug, "ahs", 0,
"Android Gstreamer Hardware Sensor");
if (!_init_classes ()) {
gst_android_hardware_sensor_deinit ();
return FALSE;
}
gst_ah_sensor_sensor_sizes_init ();
return TRUE;
}
void
gst_android_hardware_sensor_deinit (void)
{
JNIEnv *env = gst_amc_jni_get_env ();
if (android_content_context.SENSOR_SERVICE) {
gst_amc_jni_object_unref (env, android_content_context.SENSOR_SERVICE);
android_content_context.SENSOR_SERVICE = NULL;
}
if (android_content_context.klass) {
gst_amc_jni_object_unref (env, android_content_context.klass);
android_content_context.klass = NULL;
}
if (android_hardware_sensor_event.klass) {
gst_amc_jni_object_unref (env, android_hardware_sensor_event.klass);
android_hardware_sensor_event.klass = NULL;
}
if (android_hardware_sensor_manager.klass) {
gst_amc_jni_object_unref (env, android_hardware_sensor_manager.klass);
android_hardware_sensor_manager.klass = NULL;
}
if (org_freedesktop_gstreamer_androidmedia_gstahscallback.klass) {
if (natives_registered) {
(*env)->UnregisterNatives (env,
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass);
natives_registered = FALSE;
}
gst_amc_jni_object_unref (env,
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass);
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass = NULL;
}
if (sensor_sizes)
gst_ah_sensor_sensor_sizes_deinit ();
}
GstAHSensorManager *
gst_ah_sensor_get_manager (void)
{
jobject context;
GError *err = NULL;
JNIEnv *env = gst_amc_jni_get_env ();
GstAHSensorManager *manager;
jobject object;
gboolean success;
context = gst_android_get_application_context ();
success = gst_amc_jni_call_object_method (env, &err, context,
android_content_context.getSystemService,
&object, android_content_context.SENSOR_SERVICE);
if (!success)
return NULL;
object = gst_amc_jni_object_make_global (env, object);
if (!object)
return NULL;
manager = g_slice_new (GstAHSensorManager);
manager->object = object;
return manager;
}
GstAHSensor *
gst_ah_sensor_get_default_sensor (GstAHSensorManager * self, gint32 sensor_type)
{
JNIEnv *env = gst_amc_jni_get_env ();
GError *err = NULL;
jobject object;
GstAHSensor *sensor;
if (!gst_amc_jni_call_object_method (env, &err, self->object,
android_hardware_sensor_manager.getDefaultSensor,
&object, sensor_type))
return NULL;
object = gst_amc_jni_object_make_global (env, object);
if (!object)
return NULL;
sensor = g_slice_new (GstAHSensor);
sensor->object = object;
return sensor;
}
GstAHSensorEventListener *
gst_ah_sensor_create_listener (GstAHSensorCallback sensor_cb,
GstAHSAccuracyCallback accuracy_cb, gpointer user_data)
{
JNIEnv *env = gst_amc_jni_get_env ();
GError *err = NULL;
GstAHSensorEventListener *listener;
jobject object;
object = gst_amc_jni_new_object (env,
&err,
TRUE,
org_freedesktop_gstreamer_androidmedia_gstahscallback.klass,
org_freedesktop_gstreamer_androidmedia_gstahscallback.constructor,
UNION_CAST (sensor_cb, jlong),
UNION_CAST (accuracy_cb, jlong), UNION_CAST (user_data, jlong));
if (err) {
GST_ERROR ("Failed to create listener callback class");
g_clear_error (&err);
return NULL;
}
listener = g_slice_new (GstAHSensorEventListener);
listener->object = object;
return listener;
}
gboolean
gst_ah_sensor_register_listener (GstAHSensorManager * self,
GstAHSensorEventListener * listener, GstAHSensor * sensor, gint32 delay)
{
JNIEnv *env = gst_amc_jni_get_env ();
GError *err = NULL;
gboolean success;
gst_amc_jni_call_boolean_method (env, &err, self->object,
android_hardware_sensor_manager.registerListener, &success,
listener->object, sensor->object, (jint) delay);
if (err) {
GST_ERROR
("Failed to call android.hardware.SensorManager.registerListener: %s",
err->message);
g_clear_error (&err);
return FALSE;
}
listener->registered = TRUE;
return TRUE;
}
void
gst_ah_sensor_unregister_listener (GstAHSensorManager * self,
GstAHSensorEventListener * listener)
{
JNIEnv *env = gst_amc_jni_get_env ();
GError *err = NULL;
gst_amc_jni_call_void_method (env, &err, self->object,
android_hardware_sensor_manager.unregisterListener, listener->object);
if (err) {
GST_ERROR
("Failed to call android.hardware.SensorManager.unregisterListener: %s",
err->message);
g_clear_error (&err);
}
listener->registered = FALSE;
}
gboolean
gst_ah_sensor_populate_event (GstAHSensorEvent * event, jobject event_object,
gint size)
{
JNIEnv *env = gst_amc_jni_get_env ();
GError *err = NULL;
jfloatArray object_array;
jfloat *values;
gst_amc_jni_get_int_field (env, &err,
event_object, android_hardware_sensor_event.accuracy, &event->accuracy);
if (err) {
GST_ERROR ("Failed to get sensor accuracy field: %s", err->message);
goto error;
}
gst_amc_jni_get_object_field (env, &err, event_object,
android_hardware_sensor_event.values, &object_array);
if (err) {
GST_ERROR ("Failed to get sensor values field: %s", err->message);
goto error;
}
values = (*env)->GetFloatArrayElements (env, object_array, NULL);
if (!values) {
GST_ERROR ("Failed to get float array elements from object array");
gst_amc_jni_object_local_unref (env, object_array);
return FALSE;
}
/* We can't use gst_amc_jni_object_make_global here because we need to call
* ReleaseFloatArrayElements before doing a local unref in the failure case,
* but gst_amc_jni_object_make_global would unref before we could Release.
*/
event->data.array = gst_amc_jni_object_ref (env, object_array);
if (!event->data.array) {
(*env)->ReleaseFloatArrayElements (env, object_array, values, JNI_ABORT);
gst_amc_jni_object_local_unref (env, object_array);
return FALSE;
}
event->data.values = values;
gst_amc_jni_object_local_unref (env, object_array);
return TRUE;
error:
g_clear_error (&err);
return FALSE;
}
void
gst_ah_sensor_free_sensor_data (GstAHSensorData * data)
{
JNIEnv *env = gst_amc_jni_get_env ();
(*env)->ReleaseFloatArrayElements (env, data->array, data->values, JNI_ABORT);
gst_amc_jni_object_unref (env, data->array);
}