am 4f93f08d: am 683a7ff9: Merge "Visualizer: Fix the conversion from 8-bit sample to 16-bit sample." into gingerbread

* commit '4f93f08d8c8b8067ff2176d9ec15c76c0e4cc0c2':
  Visualizer: Fix the conversion from 8-bit sample to 16-bit sample.