Cross Reference: /frameworks/base/docs/html/reference/images/camera2/metadata/android.tonemap.curveRed

`Name`	`Date`	`Size`
Up to higher level directory
`gamma_tonemap.png`	21-Aug-2018	`21.2K`
`inverse_tonemap.png`	21-Aug-2018	`15.1K`
`linear_tonemap.png`	21-Aug-2018	`14.7K`
`rec709_tonemap.png`	21-Aug-2018	`22.5K`
`srgb_tonemap.png`	21-Aug-2018	`21.6K`