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#include "u.h"
#include "lib.h"
#include "dat.h"
#include "fns.h"
#include "error.h"
#include <android/log.h>
#include <android/sensor.h>
void show_notification(char *buf);
void take_picture(int id);
int num_cameras();
int Ncameras = 0;
uchar *cambuf = nil;
int camlen;
ASensorManager *sensorManager = NULL;
enum
{
Qdir = 0,
Qcam = 1,
Qaccel = 2,
Qcompass = 4,
Qnotification = 6,
};
#define QID(p, c, y) (((p)<<16) | ((c)<<4) | (y))
static void androidinit(void);
static void
androidinit(void)
{
sensorManager = ASensorManager_getInstance();
Ncameras = num_cameras();
}
static Chan*
androidattach(char *param)
{
Chan *c;
c = devattach('N', param);
c->qid.path = QID(0, 0, Qdir);
c->qid.type = QTDIR;
c->qid.vers = 0;
return c;
}
static int
androidgen(Chan *c, char *n, Dirtab *d, int nd, int s, Dir *dp)
{
Qid q;
if (s == DEVDOTDOT) {
mkqid(&q, Qdir, 0, QTDIR);
devdir(c, q, "#N", 0, eve, 0555, dp);
return 1;
}
if (s < Ncameras) {
sprintf(up->genbuf, "cam%d.jpg", s);
mkqid(&q, (s << 16) | Qcam, 0, QTFILE);
devdir(c, q, up->genbuf, 0, eve, 0444, dp);
return 1;
}
if (s == Ncameras) {
sprintf(up->genbuf, "accel");
mkqid(&q, Qaccel, 0, QTFILE);
devdir(c, q, up->genbuf, 0, eve, 0444, dp);
return 1;
}
if (s == (Ncameras+1)) {
sprintf(up->genbuf, "compass");
mkqid(&q, Qcompass, 0, QTFILE);
devdir(c, q, up->genbuf, 0, eve, 0444, dp);
return 1;
}
if (s == (Ncameras+2)) {
sprintf(up->genbuf, "notification");
mkqid(&q, Qnotification, 0, QTFILE);
devdir(c, q, up->genbuf, 0, eve, 0222, dp);
return 1;
}
return -1;
}
static Walkqid*
androidwalk(Chan *c, Chan *nc, char **name, int nname)
{
return devwalk(c, nc, name, nname, 0, 0, androidgen);
}
static int
androidstat(Chan *c, uchar *db, int n)
{
return devstat(c, db, n, 0, 0, androidgen);
}
static Chan*
androidopen(Chan *c, int omode)
{
p9_uvlong s;
c = devopen(c, omode, 0, 0, androidgen);
if (c->qid.path & Qcam) {
s = c->qid.path >> 16;
take_picture(s);
}
c->mode = openmode(omode);
c->flag |= COPEN;
c->offset = 0;
c->iounit = 8192;
return c;
}
static void
androidclose(Chan *c)
{
if (c->qid.path & Qcam && cambuf != nil) {
free(cambuf);
cambuf = nil;
}
}
static long
androidread(Chan *c, void *v, long n, vlong off)
{
char *a = v;
long l;
const ASensor *sensor;
ASensorEventQueue *queue = NULL;
ASensorEvent data;
switch((ulong)c->qid.path & 0xF) {
default:
error(Eperm);
return -1;
case Qcam:
while(cambuf == nil)
usleep(10 * 1000);
l = camlen - off;
if (l > n)
l = n;
if (l > 0)
memcpy(a, cambuf + off, l);
return l;
case Qaccel:
queue = ASensorManager_createEventQueue(sensorManager, ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS), 1, NULL, NULL);
if (queue == NULL)
return 0;
sensor = ASensorManager_getDefaultSensor(sensorManager, ASENSOR_TYPE_ACCELEROMETER);
if (sensor == NULL) {
ASensorManager_destroyEventQueue(sensorManager, queue);
return 0;
}
if (ASensorEventQueue_enableSensor(queue, sensor)) {
ASensorEventQueue_disableSensor(queue, sensor);
ASensorManager_destroyEventQueue(sensorManager, queue);
return 0;
}
l = 0;
if (ALooper_pollAll(1000, NULL, NULL, NULL) == 1) {
if (ASensorEventQueue_getEvents(queue, &data, 1)) {
l = snprint(a, n, "%11f %11f %11f\n", data.vector.x, data.vector.y, data.vector.z);
}
}
ASensorEventQueue_disableSensor(queue, sensor);
ASensorManager_destroyEventQueue(sensorManager, queue);
return l;
case Qcompass:
queue = ASensorManager_createEventQueue(sensorManager, ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS), 1, NULL, NULL);
if (queue == NULL)
return 0;
sensor = ASensorManager_getDefaultSensor(sensorManager, ASENSOR_TYPE_MAGNETIC_FIELD);
if (sensor == NULL) {
ASensorManager_destroyEventQueue(sensorManager, queue);
return 0;
}
if (ASensorEventQueue_enableSensor(queue, sensor)) {
ASensorEventQueue_disableSensor(queue, sensor);
ASensorManager_destroyEventQueue(sensorManager, queue);
return 0;
}
l = 0;
if (ALooper_pollAll(1000, NULL, NULL, NULL) == 1) {
if (ASensorEventQueue_getEvents(queue, &data, 1)) {
l = snprint(a, n, "%11f %11f %11f\n", data.vector.x, data.vector.y, data.vector.z);
}
}
ASensorEventQueue_disableSensor(queue, sensor);
ASensorManager_destroyEventQueue(sensorManager, queue);
return l;
case Qdir:
return devdirread(c, a, n, 0, 0, androidgen);
}
}
static long
androidwrite(Chan *c, void *vp, long n, vlong off)
{
char *a = vp;
char *str;
switch((ulong)c->qid.path) {
case Qnotification:
str = malloc(n+1);
memcpy(str, a, n);
str[n] = '\0';
show_notification(str);
free(str);
return n;
default:
error(Eperm);
break;
}
return -1;
}
Dev androiddevtab = {
'N',
"android",
devreset,
androidinit,
devshutdown,
androidattach,
androidwalk,
androidstat,
androidopen,
devcreate,
androidclose,
androidread,
devbread,
androidwrite,
devbwrite,
devremove,
devwstat,
};
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