Difference between revisions of "Nvnflinger services"
| Line 30: | Line 30: | ||
== AdjustRefcount == | == AdjustRefcount == | ||
| − | Takes 3 input s32s, | + | Takes 3 input s32s: {Binder ID?}, '''addval''', and '''type'''. Each word immediately follows the previous word. No additional output. |
| + | |||
| + | {| class="wikitable" border="1" | ||
| + | |- | ||
| + | ! Called by official function | ||
| + | ! addval | ||
| + | ! type | ||
| + | |- | ||
| + | | "android::BpBinder::onFirstRef" || 1 || 1 | ||
| + | |- | ||
| + | | "android::BpBinder::onLastStrongRef" || -1 || 1 | ||
| + | |- | ||
| + | | ? || 1 || 0 | ||
| + | |- | ||
| + | | ? || -1 || 0 | ||
| + | |} | ||
== GetNativeHandle == | == GetNativeHandle == | ||
Revision as of 22:51, 2 November 2017
Nvnflinger is responsible for mediating the communication between vi and nvservices. The vi sysmodule relays display accesses to nvnflinger which in turn uses /dev/nvdisp-ctrl and /dev/nvdisp-disp0, /dev/nvdisp-disp1 from nvservices.
dispdrv
This is "nns::hosbinder::IHOSBinderDriver".
| Cmd | Name |
|---|---|
| 0 | #TransactParcel |
| 1 | #AdjustRefcount |
| 2 | #GetNativeHandle |
| 3 | #TransactParcelAuto |
This uses Android code.
Command(s) from here are constantly used while displaying gfx.
TransactParcel is used by 1.0.0 official user-processes, while starting with {unknown version} TransactParcelAuto is used instead.
TransactParcel
Takes a s32 (Binder ID?), an u32 (code), a type-0x5 input buffer (parcel_data), a type-0x6 output buffer (parcel_reply) and an input u32 (flags). Each word is placed immediately after the previous word.
Analogous to "onTransact" from "android.os.IServiceManager".
AdjustRefcount
Takes 3 input s32s: {Binder ID?}, addval, and type. Each word immediately follows the previous word. No additional output.
| Called by official function | addval | type |
|---|---|---|
| "android::BpBinder::onFirstRef" | 1 | 1 |
| "android::BpBinder::onLastStrongRef" | -1 | 1 |
| ? | 1 | 0 |
| ? | -1 | 0 |
GetNativeHandle
Takes an input s32 and u32, with the latter immediately following the previous word. Returns an output event handle.
TransactParcelAuto
Takes a s32 (Binder ID?), an u32 (code), a type-0x21 input buffer (parcel_data), a type-0x22 output buffer (parcel_reply) and an input u32 (flags). Each word is placed immediately after the previous word.