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This implements the MTP PTP [https://www.usb.org/document-library/media-transfer-protocol-v11-spec-and-mtp-v11-adopters-agreement protocol]. This was added with [[11.0.0]].
= capmtp =
= capmtp =
This implements the MTP PTP protocol[https://www.usb.org/document-library/media-transfer-protocol-v11-spec-and-mtp-v11-adopters-agreement].
This is "nn::capmtp::ICapmtpRootSession".
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Cmd || Name || Notes
! Cmd || Name
|-
|-
| 0 || [[#CreateInterface]]
|}
|}
== CreateInterface ==
No input. Returns an [[#ICapmtpInterface]].
== ICapmtpInterface ==
== ICapmtpInterface ==
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Cmd || Name || Notes
! Cmd || Name
|-
|-
| 1 || ||
| 0 || [[#Initialize]]
|-
|-
| 2 || || No input or output. Starts MTP command handler "nn.capmtp.CapmtpCommandLoop".
| 1 || [[#Finalize]]
|-
|-
| 3 || || No input or output. Stops "nn.capmtp.CapmtpCommandLoop".
| 2 || [[#Enable]]
|-
|-
| 4 || || No input. Returns true if "nn.capmtp.CapmtpCommandLoop" is running.
| 3 || [[#Disable]]
|-
|-
| 5 || ||
| 4 || [[#GetConnectionStateChangeEvent]]
|-
|-
| 6 || ||
| 5 || [[#IsEnabled]]
|-
|-
| 7 || ||
| 6 || [[#IsConnected]]
|-
|-
| 8 || ||
| 7 || [[#GetUpdatedErrorEvent]]
|-
|-
| 8 || [[#GetLastError]]
|}
|}
== Notes ==
=== Initialize ===
Only operation calls 0x1001-0x100A are available.
Takes a u32 max folder count, a u32 max image count, a u32 max video count, a transfer memory handle + u32 size and a type-0x5 buffer translated "Other" utf-16 string.
=== Finalize ===
No input/output.
Unmaps transfer memory from [[#Initialize]], stops "nn.capmtp.CapmtpCommandLoop".
=== Enable ===
No input/output.
Starts MTP command handler thread "nn.capmtp.CapmtpCommandLoop".
=== Disable ===
No input/output.
Stops "nn.capmtp.CapmtpCommandLoop".
=== GetConnectionStateChangeEvent ===
No input. Returns readable event handle.
Signaled when the USB connection status changes.
=== IsEnabled ===
No input. Returns an output bool.
Returns true if "nn.capmtp.CapmtpCommandLoop" is running.
=== IsConnected ===
No input. Returns an output bool.
Returns true if a USB connection is established.
=== GetUpdatedErrorEvent ===
No input. Returns readable event handle.
Signaled when an error occurred during album scan.
=== GetLastError ===
No input/output.
Returns the album scan Result.
= Notes =
Only PTP operations 0x1001-0x100A are available.
* OpenSession/CloseSession only allow a maximum of 1 session to be opened.
* DeviceInfo: Serial Number is set to the output from [[Settings_services#GetSerialNumber|GetSerialNumber]]. Device Version is set to the [[System_Version_Title|SystemVersion]] DisplayVersion.
While this has access to [[Filesystem_services#fsp-srv|fsp-srv]] it remains unused.
Images and Videos are loaded with [[Capture_services#caps:a|caps:a]].
Program names are loaded with [[NS_Services|ns]] using the transfer memory from [[#Initialize]].