Introduce support for new VM based minicap to support Android 12

This commit introduce a new option to use a new minicap
implementation by specifying --screen-grabber or the env
variable SCREEN_GRABBER. The current native minicap is the default
and is refered as 'minicap-bin'. The new minicap which is packaged
in an apk is usable with 'minicap-apk' and will be used as a
fallback.
At the moment, this apk is expected to be included in
minicap-prebuilt node package at this location
minicap-prebuilt/prebuilt/noarch/minicap.apk.

STFService.apk has also been updated to take into account Android 12

Signed-off-by: Crepieux Pierre <pierre.crepieux@orange.com>

lib/units/device/plugins/screen/capture.js

@@ -33,7 +33,7 @@ module.exports = syrup.serial()
       log.info('Capturing screenshot')
 
       var file = util.format('/data/local/tmp/minicap_%d.jpg', Date.now())
-      return minicap.run(util.format(
+      return minicap.run('minicap-apk', util.format(
           '-P %s -s >%s', projectionFormat(), file))
         .then(adbkit.util.readAll)
         .then(function() {

lib/units/device/plugins/screen/stream.js

@@ -25,8 +25,9 @@ module.exports = syrup.serial()
   .dependency(require('./options'))
   .define(function(options, adb, minicap, display, screenOptions) {
     var log = logger.createLogger('device:plugins:screen:stream')
+    log.info("ScreenGrabber option set to %s", options.screenGrabber)
 
-    function FrameProducer(config) {
+    function FrameProducer(config, grabber) {
       EventEmitter.call(this)
       this.actionQueue = []
       this.runningState = FrameProducer.STATE_STOPPED
@@ -37,6 +38,7 @@ module.exports = syrup.serial()
       this.banner = null
       this.parser = null
       this.frameConfig = config
+      this.grabber = options.screenGrabber
       this.readable = false
       this.needsReadable = false
       this.failCounter = new FailCounter(3, 10000)
@@ -102,7 +104,7 @@ module.exports = syrup.serial()
             .catch(function(err) {
               return this._stop().finally(function() {
                 this.failCounter.inc()
-                this.emit('error', err)
+                this.grabber = 'minicap-apk'
               })
             })
             .finally(function() {
@@ -227,13 +229,13 @@ module.exports = syrup.serial()
     }
 
     FrameProducer.prototype._startService = function() {
-      log.info('Launching screen service')
-      return minicap.run(util.format(
-          '-S -Q %d -P %s'
-        , options.screenJpegQuality
-        , this.frameConfig.toString()
-        ))
-        .timeout(10000)
+      log.info('Launching screen service %s', this.grabber)
+      return minicap.run(this.grabber,util.format(
+        '-S -Q %d -P %s'
+      , options.screenJpegQuality
+      , this.frameConfig.toString()
+      ))
+      .timeout(10000)
     }
 
     FrameProducer.prototype._readOutput = function(out) {
@@ -448,6 +450,7 @@ module.exports = syrup.serial()
 
     return createServer()
       .then(function(wss) {
+        log.info("creating FrameProducer: %s", options.screenGrabber)
         var frameProducer = new FrameProducer(
           new FrameConfig(display.properties, display.properties))
         var broadcastSet = frameProducer.broadcastSet = new BroadcastSet()