Added appletGetPseudoDeviceId and appletSetApplicationAlbumUserData. Use ipcQueryPointerBufferSize for ISelfController in appletInitialize. Moved appletIsIlluminanceAvailable in applet.h to match cmd order.

nx/include/switch/services/applet.h

@@ -240,6 +240,13 @@ Result appletEndBlockingHomeButton(void);
 
 void appletNotifyRunning(u8 *out);
 
+/**
+ * @brief Gets the PseudoDeviceId. This is derived from the output of a ns command, and from data in the host title control.nacp.
+ * @note Only available with AppletType_*Application on 2.0.0+.
+ * @param[out] out Output PseudoDeviceId.
+ */
+Result appletGetPseudoDeviceId(u128 *out);
+
 /// Set media playback state.
 /// If state is set to true, screen dimming and auto sleep is disabled.
 /// For *Application, this uses cmd SetMediaPlaybackStateForApplication, otherwise cmd SetMediaPlaybackState is used.
@@ -358,6 +365,13 @@ Result appletCreateManagedDisplayLayer(u64 *out);
  */
 Result appletGetCurrentIlluminance(float *fLux);
 
+/**
+ * @brief Gets whether Illuminance is available.
+ * @note Only available with [3.0.0+].
+ * @param out Output flag
+ */
+Result appletIsIlluminanceAvailable(bool *out);
+
 /**
  * @brief Gets the current Illuminance from the light sensor. Same as \ref appletGetCurrentIlluminance except for the additional param.
  * @note Only available with [5.0.0+].
@@ -367,11 +381,12 @@ Result appletGetCurrentIlluminance(float *fLux);
 Result appletGetCurrentIlluminanceEx(bool *bOverLimit, float *fLux);
 
 /**
- * @brief Gets whether Illuminance is available.
- * @note Only available with [3.0.0+].
- * @param out Output flag
+ * @brief Sets the Application AlbumUserData.
+ * @note Only available with [8.0.0+].
+ * @param[in] buffer Buffer containing arbitrary UserData.
+ * @param[in] size Buffer size, must be <=0x400.
  */
-Result appletIsIlluminanceAvailable(bool *out);
+Result appletSetApplicationAlbumUserData(const void* buffer, size_t size);
 
 /**
  * @brief Stops forwarding the input to the foreground app, works only in the Overlay applet context.

nx/source/services/applet.c

@@ -42,6 +42,8 @@ static Service g_appletIAudioController;
 static Service g_appletIDisplayController;
 static Service g_appletIDebugFunctions;
 
+static size_t g_appletISelfController_ptrbufsize;
+
 static Event g_appletMessageEvent;
 
 static u64 g_appletResourceUserId = 0;
@@ -197,6 +199,9 @@ Result appletInitialize(void)
     if (R_SUCCEEDED(rc))
         rc = _appletGetSession(&g_appletProxySession, &g_appletIDebugFunctions, 1000);
 
+    if (R_SUCCEEDED(rc))
+        rc = ipcQueryPointerBufferSize(g_appletISelfController.handle, &g_appletISelfController_ptrbufsize);
+
     // ICommonStateGetter::GetEventHandle
     if (R_SUCCEEDED(rc))
         rc = _appletGetEvent(&g_appletICommonStateGetter, &g_appletMessageEvent, 0, false);
@@ -1438,6 +1443,46 @@ void appletNotifyRunning(u8 *out) {
     if (R_FAILED(rc)) fatalSimple(MAKERESULT(Module_Libnx, LibnxError_BadAppletNotifyRunning));
 }
 
+Result appletGetPseudoDeviceId(u128 *out) {
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    if (!serviceIsActive(&g_appletSrv) || !_appletIsApplication())
+        return MAKERESULT(Module_Libnx, LibnxError_NotInitialized);
+
+    if (hosversionBefore(2,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+    } *raw;
+
+    raw = serviceIpcPrepareHeader(&g_appletIFunctions, &c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 50;
+
+    Result rc = serviceIpcDispatch(&g_appletIFunctions);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        struct {
+            u64 magic;
+            u64 result;
+            u128 out;
+        } *resp;
+
+        serviceIpcParse(&g_appletIFunctions, &r, sizeof(*resp));
+        resp = r.Raw;
+
+        rc = resp->result;
+        if (R_SUCCEEDED(rc) && out) *out = resp->out;
+    }
+
+    return rc;
+}
+
 Result appletSetMediaPlaybackState(bool state) {
     if (!serviceIsActive(&g_appletSrv))
         return MAKERESULT(Module_Libnx, LibnxError_NotInitialized);
@@ -2352,6 +2397,43 @@ Result appletGetCurrentIlluminanceEx(bool *bOverLimit, float *fLux) {
     return rc;
 }
 
+Result appletSetApplicationAlbumUserData(const void* buffer, size_t size) {
+    if (hosversionBefore(8,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    ipcAddSendSmart(&c, g_appletISelfController_ptrbufsize, buffer, size, 0);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+    } *raw;
+
+    raw = serviceIpcPrepareHeader(&g_appletISelfController, &c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 110;
+
+    Result rc = serviceIpcDispatch(&g_appletISelfController);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        struct {
+            u64 magic;
+            u64 result;
+        } *resp;
+
+        serviceIpcParse(&g_appletISelfController, &r, sizeof(*resp));
+        resp = r.Raw;
+
+        rc = resp->result;
+    }
+
+    return rc;
+}
+
 // ILibraryAppletSelfAccessor
 
 static Result _appletExitProcessAndReturn(void) {