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authorDavid 'Digit' Turner <digit@google.com>2009-06-11 14:43:03 +0200
committerDavid 'Digit' Turner <digit@google.com>2009-06-12 11:39:01 +0200
commit5998b8947d8c2788b62d38afdd571ddff78648a5 (patch)
treef5a9f1d8f5ad76e2c3a91ffaed565ac70685edac /android
parent46be48730333120a7b939116cef075e61c12c703 (diff)
downloadexternal_qemu-5998b8947d8c2788b62d38afdd571ddff78648a5.zip
external_qemu-5998b8947d8c2788b62d38afdd571ddff78648a5.tar.gz
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This fixes the hardware emulation to support several clients listening
to the "sensors" service at the same time. Each client can decide to listen to different sensors, with different delays too. The previous implementation only allowed a single client, which blocked anything application that tried to read the sensors (since the framework was already the only allowed client) Signed-off-by: David 'Digit' Turner <digit@google.com>
Diffstat (limited to 'android')
-rw-r--r--android/hw-sensors.c391
1 files changed, 238 insertions, 153 deletions
diff --git a/android/hw-sensors.c b/android/hw-sensors.c
index 37d4af7..1fa12dc 100644
--- a/android/hw-sensors.c
+++ b/android/hw-sensors.c
@@ -13,6 +13,7 @@
#include "android/hw-sensors.h"
#include "android/utils/debug.h"
#include "android/utils/misc.h"
+#include "android/utils/system.h"
#include "android/hw-qemud.h"
#include "android/globals.h"
#include "qemu-char.h"
@@ -139,189 +140,172 @@ typedef struct {
#define HEADER_SIZE 4
#define BUFFER_SIZE 512
+typedef struct HwSensorClient HwSensorClient;
+
typedef struct {
- QemudService* service;
- int32_t delay_ms;
- uint32_t enabledMask;
- QEMUTimer* timer;
- Sensor sensors[MAX_SENSORS];
+ QemudService* service;
+ Sensor sensors[MAX_SENSORS];
+ HwSensorClient* clients;
} HwSensors;
-/* forward */
-
-static void hw_sensors_receive( HwSensors* h,
- uint8_t* query,
- int querylen );
-
-static void hw_sensors_timer_tick(void* opaque);
-
-/* Qemud service management */
+struct HwSensorClient {
+ HwSensorClient* next;
+ HwSensors* sensors;
+ QemudClient* client;
+ QEMUTimer* timer;
+ uint32_t enabledMask;
+ int32_t delay_ms;
+};
static void
-_hw_sensors_qemud_client_recv( void* opaque, uint8_t* msg, int msglen,
- QemudClient* client )
+_hwSensorClient_free( HwSensorClient* cl )
{
- hw_sensors_receive(opaque, msg, msglen);
-}
+ /* remove from sensors's list */
+ if (cl->sensors) {
+ HwSensorClient** pnode = &cl->sensors->clients;
+ for (;;) {
+ HwSensorClient* node = *pnode;
+ if (node == NULL)
+ break;
+ if (node == cl) {
+ *pnode = cl->next;
+ break;
+ }
+ pnode = &node->next;
+ }
+ cl->next = NULL;
+ cl->sensors = NULL;
+ }
-static QemudClient*
-_hw_sensors_service_connect( void* opaque, QemudService* service, int channel )
-{
- HwSensors* sensors = opaque;
- QemudClient* client = qemud_client_new(service, channel,
- sensors,
- _hw_sensors_qemud_client_recv,
- NULL);
- qemud_client_set_framing(client, 1);
- return client;
+ /* close QEMUD client, if any */
+ if (cl->client) {
+ qemud_client_close(cl->client);
+ cl->client = NULL;
+ }
+ /* remove timer, if any */
+ if (cl->timer) {
+ qemu_del_timer(cl->timer);
+ qemu_free_timer(cl->timer);
+ cl->timer = NULL;
+ }
+ AFREE(cl);
}
-/* change the value of the emulated acceleration vector */
-static void
-hw_sensors_set_acceleration( HwSensors* h, float x, float y, float z )
-{
- Sensor* s = &h->sensors[ANDROID_SENSOR_ACCELERATION];
- s->u.acceleration.x = x;
- s->u.acceleration.y = y;
- s->u.acceleration.z = z;
-}
+/* forward */
+static void _hwSensorClient_tick(void* opaque);
-#if 0 /* not used yet */
-/* change the value of the emulated magnetic vector */
-static void
-hw_sensors_set_magnetic_field( HwSensors* h, float x, float y, float z )
-{
- Sensor* s = &h->sensors[ANDROID_SENSOR_MAGNETIC_FIELD];
- s->u.magnetic.x = x;
- s->u.magnetic.y = y;
- s->u.magnetic.z = z;
-}
-/* change the values of the emulated orientation */
-static void
-hw_sensors_set_orientation( HwSensors* h, float azimuth, float pitch, float roll )
+static HwSensorClient*
+_hwSensorClient_new( HwSensors* sensors )
{
- Sensor* s = &h->sensors[ANDROID_SENSOR_MAGNETIC_FIELD];
- s->u.orientation.azimuth = azimuth;
- s->u.orientation.pitch = pitch;
- s->u.orientation.roll = roll;
-}
+ HwSensorClient* cl;
-/* change the emulated temperature */
-static void
-hw_sensors_set_temperature( HwSensors* h, float celsius )
-{
- Sensor* s = &h->sensors[ANDROID_SENSOR_MAGNETIC_FIELD];
- s->u.temperature.celsius = celsius;
+ ANEW0(cl);
+
+ cl->sensors = sensors;
+ cl->enabledMask = 0;
+ cl->delay_ms = 1000;
+ cl->timer = qemu_new_timer(vm_clock, _hwSensorClient_tick, cl);
+
+ cl->next = sensors->clients;
+ sensors->clients = cl;
+
+ return cl;
}
-#endif
-/* change the coarse orientation (landscape/portrait) of the emulated device */
+/* forward */
+
+static void _hwSensorClient_receive( HwSensorClient* cl,
+ uint8_t* query,
+ int querylen );
+
+/* Qemud service management */
+
static void
-hw_sensors_set_coarse_orientation( HwSensors* h, AndroidCoarseOrientation orient )
+_hwSensorClient_recv( void* opaque, uint8_t* msg, int msglen,
+ QemudClient* client )
{
- /* The Android framework computes the orientation by looking at
- * the accelerometer sensor (*not* the orientation sensor !)
- *
- * That's because the gravity is a constant 9.81 vector that
- * can be determined quite easily.
- *
- * Also, for some reason, the framework code considers that the phone should
- * be inclined by 30 degrees along the phone's X axis to be considered
- * in its ideal "vertical" position
- *
- * If the phone is completely vertical, rotating it will not do anything !
- */
- const double g = 9.81;
- const double cos_30 = 0.866025403784;
- const double sin_30 = 0.5;
+ HwSensorClient* cl = opaque;
- switch (orient) {
- case ANDROID_COARSE_PORTRAIT:
- hw_sensors_set_acceleration( h, 0., g*cos_30, g*sin_30 );
- break;
-
- case ANDROID_COARSE_LANDSCAPE:
- hw_sensors_set_acceleration( h, g*cos_30, 0., g*sin_30 );
- break;
- default:
- ;
- }
+ _hwSensorClient_receive(cl, msg, msglen);
}
-
-/* initialize the sensors state */
static void
-hw_sensors_init( HwSensors* h )
+_hwSensorClient_close( void* opaque )
{
- h->service = qemud_service_register("sensors", 1, h,
- _hw_sensors_service_connect );
- h->enabledMask = 0;
- h->delay_ms = 1000;
- h->timer = qemu_new_timer(vm_clock, hw_sensors_timer_tick, h);
+ HwSensorClient* cl = opaque;
- hw_sensors_set_coarse_orientation(h, ANDROID_COARSE_PORTRAIT);
+ /* the client is already closed here */
+ cl->client = NULL;
+ _hwSensorClient_free(cl);
}
/* send a one-line message to the HAL module through a qemud channel */
static void
-hw_sensors_send( HwSensors* hw, const uint8_t* msg, int msglen )
+_hwSensorClient_send( HwSensorClient* cl, const uint8_t* msg, int msglen )
{
D("%s: '%s'", __FUNCTION__, quote_bytes((const void*)msg, msglen));
- qemud_service_broadcast(hw->service, msg, msglen);
+ qemud_client_send(cl->client, msg, msglen);
+}
+
+static int
+_hwSensorClient_enabled( HwSensorClient* cl, int sensorId )
+{
+ return (cl->enabledMask & (1 << sensorId)) != 0;
}
/* this function is called periodically to send sensor reports
* to the HAL module, and re-arm the timer if necessary
*/
static void
-hw_sensors_timer_tick( void* opaque )
+_hwSensorClient_tick( void* opaque )
{
- HwSensors* h = opaque;
- int64_t delay = h->delay_ms;
- int64_t now_ns;
- uint32_t mask = h->enabledMask;
- Sensor* sensor;
- char buffer[128];
-
- sensor = &h->sensors[ANDROID_SENSOR_ACCELERATION];
- if (sensor->enabled) {
+ HwSensorClient* cl = opaque;
+ HwSensors* hw = cl->sensors;
+ int64_t delay = cl->delay_ms;
+ int64_t now_ns;
+ uint32_t mask = cl->enabledMask;
+ Sensor* sensor;
+ char buffer[128];
+
+ if (_hwSensorClient_enabled(cl, ANDROID_SENSOR_ACCELERATION)) {
+ sensor = &hw->sensors[ANDROID_SENSOR_ACCELERATION];
snprintf(buffer, sizeof buffer, "acceleration:%g:%g:%g",
sensor->u.acceleration.x,
sensor->u.acceleration.y,
sensor->u.acceleration.z);
- hw_sensors_send(h, (uint8_t*)buffer, strlen(buffer));
+ _hwSensorClient_send(cl, (uint8_t*)buffer, strlen(buffer));
}
- sensor = &h->sensors[ANDROID_SENSOR_MAGNETIC_FIELD];
- if (sensor->enabled) {
+ if (_hwSensorClient_enabled(cl, ANDROID_SENSOR_MAGNETIC_FIELD)) {
+ sensor = &hw->sensors[ANDROID_SENSOR_MAGNETIC_FIELD];
snprintf(buffer, sizeof buffer, "magnetic-field:%g:%g:%g",
sensor->u.magnetic.x,
sensor->u.magnetic.y,
sensor->u.magnetic.z);
- hw_sensors_send(h, (uint8_t*)buffer, strlen(buffer));
+ _hwSensorClient_send(cl, (uint8_t*)buffer, strlen(buffer));
}
- sensor = &h->sensors[ANDROID_SENSOR_ORIENTATION];
- if (sensor->enabled) {
+ if (_hwSensorClient_enabled(cl, ANDROID_SENSOR_ORIENTATION)) {
+ sensor = &hw->sensors[ANDROID_SENSOR_ORIENTATION];
snprintf(buffer, sizeof buffer, "orientation:%g:%g:%g",
sensor->u.orientation.azimuth,
sensor->u.orientation.pitch,
sensor->u.orientation.roll);
- hw_sensors_send(h, (uint8_t*)buffer, strlen(buffer));
+ _hwSensorClient_send(cl, (uint8_t*)buffer, strlen(buffer));
}
- sensor = &h->sensors[ANDROID_SENSOR_TEMPERATURE];
- if (sensor->enabled) {
+ if (_hwSensorClient_enabled(cl, ANDROID_SENSOR_TEMPERATURE)) {
+ sensor = &hw->sensors[ANDROID_SENSOR_TEMPERATURE];
snprintf(buffer, sizeof buffer, "temperature:%g",
sensor->u.temperature.celsius);
- hw_sensors_send(h, (uint8_t*)buffer, strlen(buffer));
+ _hwSensorClient_send(cl, (uint8_t*)buffer, strlen(buffer));
}
now_ns = qemu_get_clock(vm_clock);
snprintf(buffer, sizeof buffer, "sync:%lld", now_ns/1000);
- hw_sensors_send(h, (uint8_t*)buffer, strlen(buffer));
+ _hwSensorClient_send(cl, (uint8_t*)buffer, strlen(buffer));
/* rearm timer, use a minimum delay of 20 ms, just to
* be safe.
@@ -333,13 +317,15 @@ hw_sensors_timer_tick( void* opaque )
delay = 20;
delay *= 1000000LL; /* convert to nanoseconds */
- qemu_mod_timer(h->timer, now_ns + delay);
+ qemu_mod_timer(cl->timer, now_ns + delay);
}
/* handle incoming messages from the HAL module */
static void
-hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
+_hwSensorClient_receive( HwSensorClient* cl, uint8_t* msg, int msglen )
{
+ HwSensors* hw = cl->sensors;
+
D("%s: '%.*s'", __FUNCTION__, msglen, msg);
/* "list-sensors" is used to get an integer bit map of
@@ -349,15 +335,15 @@ hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
if (msglen == 12 && !memcmp(msg, "list-sensors", 12)) {
char buff[12];
int mask = 0;
+ int nn;
- if (android_hw->hw_accelerometer)
- mask |= (1 << ANDROID_SENSOR_ACCELERATION);
-
- /* XXX: TODO: Add other tests when we add the corresponding
- * properties to hardware-properties.ini et al. */
+ for (nn = 0; nn < MAX_SENSORS; nn++) {
+ if (hw->sensors[nn].enabled)
+ mask |= (1 << nn);
+ }
snprintf(buff, sizeof buff, "%d", mask);
- hw_sensors_send(hw, (const uint8_t*)buff, strlen(buff));
+ _hwSensorClient_send(cl, (const uint8_t*)buff, strlen(buff));
return;
}
@@ -365,7 +351,7 @@ hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
* the channel. It is used to exit a blocking read.
*/
if (msglen == 4 && !memcmp(msg, "wake", 4)) {
- hw_sensors_send(hw, (const uint8_t*)"wake", 4);
+ _hwSensorClient_send(cl, (const uint8_t*)"wake", 4);
return;
}
@@ -373,9 +359,9 @@ hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
* between sensor events
*/
if (msglen > 10 && !memcmp(msg, "set-delay:", 10)) {
- hw->delay_ms = atoi((const char*)msg+10);
- if (hw->enabledMask != 0)
- hw_sensors_timer_tick(hw);
+ cl->delay_ms = atoi((const char*)msg+10);
+ if (cl->enabledMask != 0)
+ _hwSensorClient_tick(cl);
return;
}
@@ -385,7 +371,7 @@ hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
*/
if (msglen > 4 && !memcmp(msg, "set:", 4)) {
char* q;
- int id, enabled, oldEnabledMask = hw->enabledMask;
+ int id, enabled, oldEnabledMask = cl->enabledMask;
msg += 4;
q = strchr((char*)msg, ':');
if (q == NULL) { /* should not happen */
@@ -395,32 +381,27 @@ hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
*q++ = 0;
id = _sensorIdFromName((const char*)msg);
- if (id < 0) {
+ if (id < 0 || id >= MAX_SENSORS) {
D("%s: ignore unknown sensor name '%s'", __FUNCTION__, msg);
return;
}
+ if (!hw->sensors[id].enabled) {
+ D("%s: trying to set disabled %s sensor", __FUNCTION__, msg);
+ return;
+ }
enabled = (q[0] == '1');
- hw->sensors[id].enabled = (char) enabled;
if (enabled)
- hw->enabledMask |= (1 << id);
+ cl->enabledMask |= (1 << id);
else
- hw->enabledMask &= ~(1 << id);
-
- D("%s: %s %s sensor", __FUNCTION__,
- hw->sensors[id].enabled ? "enabling" : "disabling", msg);
+ cl->enabledMask &= ~(1 << id);
- if (oldEnabledMask == 0 && enabled) {
- /* we enabled our first sensor, start event reporting */
- D("%s: starting event reporting (mask=%04x)", __FUNCTION__,
- hw->enabledMask);
- }
- else if (hw->enabledMask == 0 && !enabled) {
- /* we disabled our last sensor, stop event reporting */
- D("%s: stopping event reporting", __FUNCTION__);
+ if (cl->enabledMask != oldEnabledMask) {
+ D("%s: %s %s sensor", __FUNCTION__,
+ (cl->enabledMask & (1 << id)) ? "enabling" : "disabling", msg);
}
- hw_sensors_timer_tick(hw);
+ _hwSensorClient_tick(cl);
return;
}
@@ -428,6 +409,110 @@ hw_sensors_receive( HwSensors* hw, uint8_t* msg, int msglen )
}
+static QemudClient*
+_hwSensors_connect( void* opaque, QemudService* service, int channel )
+{
+ HwSensors* sensors = opaque;
+ HwSensorClient* cl = _hwSensorClient_new(sensors);
+ QemudClient* client = qemud_client_new(service, channel, cl,
+ _hwSensorClient_recv,
+ _hwSensorClient_close);
+ qemud_client_set_framing(client, 1);
+ cl->client = client;
+
+ return client;
+}
+
+/* change the value of the emulated acceleration vector */
+static void
+_hwSensors_setAcceleration( HwSensors* h, float x, float y, float z )
+{
+ Sensor* s = &h->sensors[ANDROID_SENSOR_ACCELERATION];
+ s->u.acceleration.x = x;
+ s->u.acceleration.y = y;
+ s->u.acceleration.z = z;
+}
+
+#if 0 /* not used yet */
+/* change the value of the emulated magnetic vector */
+static void
+_hwSensors_setMagneticField( HwSensors* h, float x, float y, float z )
+{
+ Sensor* s = &h->sensors[ANDROID_SENSOR_MAGNETIC_FIELD];
+ s->u.magnetic.x = x;
+ s->u.magnetic.y = y;
+ s->u.magnetic.z = z;
+}
+
+/* change the values of the emulated orientation */
+static void
+_hwSensors_setOrientation( HwSensors* h, float azimuth, float pitch, float roll )
+{
+ Sensor* s = &h->sensors[ANDROID_SENSOR_ORIENTATION];
+ s->u.orientation.azimuth = azimuth;
+ s->u.orientation.pitch = pitch;
+ s->u.orientation.roll = roll;
+}
+
+/* change the emulated temperature */
+static void
+_hwSensors_setTemperature( HwSensors* h, float celsius )
+{
+ Sensor* s = &h->sensors[ANDROID_SENSOR_TEMPERATURE];
+ s->u.temperature.celsius = celsius;
+}
+#endif
+
+/* change the coarse orientation (landscape/portrait) of the emulated device */
+static void
+_hwSensors_setCoarseOrientation( HwSensors* h, AndroidCoarseOrientation orient )
+{
+ /* The Android framework computes the orientation by looking at
+ * the accelerometer sensor (*not* the orientation sensor !)
+ *
+ * That's because the gravity is a constant 9.81 vector that
+ * can be determined quite easily.
+ *
+ * Also, for some reason, the framework code considers that the phone should
+ * be inclined by 30 degrees along the phone's X axis to be considered
+ * in its ideal "vertical" position
+ *
+ * If the phone is completely vertical, rotating it will not do anything !
+ */
+ const double g = 9.81;
+ const double cos_30 = 0.866025403784;
+ const double sin_30 = 0.5;
+
+ switch (orient) {
+ case ANDROID_COARSE_PORTRAIT:
+ _hwSensors_setAcceleration( h, 0., g*cos_30, g*sin_30 );
+ break;
+
+ case ANDROID_COARSE_LANDSCAPE:
+ _hwSensors_setAcceleration( h, g*cos_30, 0., g*sin_30 );
+ break;
+ default:
+ ;
+ }
+}
+
+
+/* initialize the sensors state */
+static void
+_hwSensors_init( HwSensors* h )
+{
+ h->service = qemud_service_register("sensors", 0, h,
+ _hwSensors_connect );
+
+ if (android_hw->hw_accelerometer)
+ h->sensors[ANDROID_SENSOR_ACCELERATION].enabled = 1;
+
+ /* XXX: TODO: Add other tests when we add the corresponding
+ * properties to hardware-properties.ini et al. */
+
+ _hwSensors_setCoarseOrientation(h, ANDROID_COARSE_PORTRAIT);
+}
+
static HwSensors _sensorsState[1];
void
@@ -436,7 +521,7 @@ android_hw_sensors_init( void )
HwSensors* hw = _sensorsState;
if (hw->service == NULL) {
- hw_sensors_init(hw);
+ _hwSensors_init(hw);
D("%s: sensors qemud service initialized", __FUNCTION__);
}
}
@@ -446,6 +531,6 @@ extern void
android_sensors_set_coarse_orientation( AndroidCoarseOrientation orient )
{
android_hw_sensors_init();
- hw_sensors_set_coarse_orientation(_sensorsState, orient);
+ _hwSensors_setCoarseOrientation(_sensorsState, orient);
}