DashPlayer: Fix in DashCodec for Adapative Streaming

Fix in DashCodec for Adaptive Streaming

Change-Id: Ie1e30627c8095a7210ad4e16c96f5f79abff22c6
CRs-fixed: 596767
mm-video: venc: use source stride for color-converting RGB input

 -RGB input may be composed by GPU with an aligned stride
  different from the frame-width.
 -CTS test cases testEncodeDecodeVideoFromSurfaceToSurface720p
  and testVideoEdit720p fails because gralloc-handle
  stride value is not used
 -Extract this stride from gralloc-handle to interpret the buffer

Change-Id: I63fd224e933424e1e8c49a19270545f000a2ebd5
Merge https://github.com/Project-OctOS/android_hardware_qcom_media-caf into kk-4.4