add frame rate management (#558)

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

lib/cli/provider/index.js

@@ -115,6 +115,12 @@ module.exports.builder = function(yargs) {
     , type: 'string'
     , default: ip()
     })
+    .option('screen-frame-rate', {
+      describe: 'The frame rate (frames/s) to be used for screen transport on the network. ' +
+        'Float value must be > 0.0 otherwise the default behavior is kept'
+    , type: 'number'
+    , default: process.env.SCREEN_FRAME_RATE || -1
+    })
     .option('screen-jpeg-quality', {
       describe: 'The JPG quality to use for the screen.'
     , type: 'number'
@@ -198,6 +204,7 @@ module.exports.handler = function(argv) {
       , '--storage-url', argv.storageUrl
       , '--adb-host', argv.adbHost
       , '--adb-port', argv.adbPort
+      , '--screen-frame-rate', argv.screenFrameRate
       , '--screen-jpeg-quality', argv.screenJpegQuality
       , '--screen-grabber', argv.screenGrabber
       , '--screen-ping-interval', argv.screenPingInterval