camhook: split cam-detect code to different file

src/main/camhook/Module.mk

@@ -8,4 +8,5 @@ libs_camhook := \
 
 src_camhook := \
     cam.c \
+    cam-detect.c \
     config-cam.c \

src/main/camhook/cam-detect.c

@@ -0,0 +1,375 @@
+#define LOG_MODULE "cam-hook"
+
+// clang-format off
+// Don't format because the order is important here
+#include <windows.h>
+#include <initguid.h>
+// clang-format on
+
+#include <mfapi.h>
+#include <mfidl.h>
+#include <mfobjects.h>
+
+#include <cfgmgr32.h>
+#include <setupapi.h>
+
+#include <stdio.h>
+
+#include "camhook/cam-detect.h"
+
+#include "util/defs.h"
+#include "util/log.h"
+#include "util/str.h"
+
+EXTERN_GUID(
+    MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,
+    0xc60ac5fe,
+    0x252a,
+    0x478f,
+    0xa0,
+    0xef,
+    0xbc,
+    0x8f,
+    0xa5,
+    0xf7,
+    0xca,
+    0xd3);
+EXTERN_GUID(
+    MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID,
+    0x8ac3587a,
+    0x4ae7,
+    0x42d8,
+    0x99,
+    0xe0,
+    0x0a,
+    0x60,
+    0x13,
+    0xee,
+    0xf9,
+    0x0f);
+EXTERN_GUID(
+    MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK,
+    0x58f0aad8,
+    0x22bf,
+    0x4f8a,
+    0xbb,
+    0x3d,
+    0xd2,
+    0xc4,
+    0x97,
+    0x8c,
+    0x6e,
+    0x2f);
+// define ourselves cause mingw has these wrong
+
+
+bool check_four(const char inA[4], const char inB[4])
+{
+    return (*(uint32_t *) inA == *(uint32_t *) inB);
+}
+
+char *grab_next_camera_id(char *buffer, size_t bsz)
+{
+    static size_t gotten = 0;
+
+    IMFAttributes *pAttributes = NULL;
+    IMFActivate **ppDevices = NULL;
+
+    buffer[0] = '\0';
+
+    HRESULT hr = MFCreateAttributes(&pAttributes, 1);
+
+    if (FAILED(hr)) {
+        log_info("MFCreateAttributes failed: %ld", hr);
+        goto done;
+    }
+
+    hr = pAttributes->lpVtbl->SetGUID(
+        pAttributes,
+        &MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,
+        &MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID);
+    if (FAILED(hr)) {
+        log_info("SetGUID failed: %ld", hr);
+        goto done;
+    }
+
+    UINT32 count;
+    hr = MFEnumDeviceSources(pAttributes, &ppDevices, &count);
+
+    if (FAILED(hr)) {
+        log_info("MFEnumDeviceSources failed: %ld", hr);
+        goto done;
+    }
+
+    if (count <= gotten) {
+        log_info("gotten failed: %d < %d", count, (int) gotten);
+        // not enough remaining
+        goto done;
+    }
+
+    wchar_t wSymLink[CAMERA_DATA_STRING_SIZE];
+    UINT32 sz;
+
+    hr = ppDevices[gotten]->lpVtbl->GetString(
+        ppDevices[gotten],
+        &MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK,
+        wSymLink,
+        CAMERA_DATA_STRING_SIZE,
+        &sz);
+
+    if (FAILED(hr)) {
+        log_info("GetString failed: %ld", hr);
+        goto done;
+    }
+
+    wcstombs(buffer, wSymLink, bsz);
+    log_info("Detected webcam: %s\n", buffer);
+    ++gotten;
+
+done:
+    if (pAttributes) {
+        pAttributes->lpVtbl->Release(pAttributes);
+    }
+
+    for (DWORD i = 0; i < count; i++) {
+        if (ppDevices != NULL && ppDevices[i]) {
+            ppDevices[i]->lpVtbl->Release(ppDevices[i]);
+        }
+    }
+
+    CoTaskMemFree(ppDevices);
+
+    return buffer;
+}
+
+bool convert_sym_to_path(const char *sym, char *path)
+{
+    HDEVINFO DeviceInfoSet = SetupDiCreateDeviceInfoList(NULL, NULL);
+
+    if (DeviceInfoSet == INVALID_HANDLE_VALUE) {
+        log_info("Could not open SetupDiCreateDeviceInfoList\n");
+        return 0;
+    }
+
+    SP_DEVICE_INTERFACE_DATA DeviceInterfaceData = {0};
+    DeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
+
+    if (!SetupDiOpenDeviceInterfaceA(
+            DeviceInfoSet, sym, 0, &DeviceInterfaceData)) {
+        log_info("Could not SetupDiOpenDeviceInterfaceA\n");
+        return 0;
+    }
+
+    SP_DEVINFO_DATA DeviceInfoData = {0};
+    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
+
+    if (!SetupDiGetDeviceInterfaceDetailA(
+            DeviceInfoSet,
+            &DeviceInterfaceData,
+            NULL,
+            0,
+            NULL,
+            &DeviceInfoData)) {
+        if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+            log_info("Could not SetupDiGetDeviceInterfaceDetailA\n");
+            return 0;
+        }
+    }
+
+    DWORD sz;
+
+    if (!SetupDiGetDeviceInstanceIdA(
+            DeviceInfoSet,
+            &DeviceInfoData,
+            path,
+            CAMERA_DATA_STRING_SIZE,
+            &sz)) {
+        log_info("Could not SetupDiGetDeviceInstanceIdA\n");
+        return 0;
+    }
+
+    if (DeviceInfoSet != INVALID_HANDLE_VALUE) {
+        if (!SetupDiDeleteDeviceInterfaceData(
+                DeviceInfoSet, &DeviceInterfaceData)) {
+            log_info("Could not SetupDiDeleteDeviceInterfaceData\n");
+            return 0;
+        }
+
+        SetupDiDestroyDeviceInfoList(DeviceInfoSet);
+    }
+
+    return 1;
+}
+
+void strtolower(char *str)
+{
+    for (size_t i = 0; str[i]; i++) {
+        str[i] = tolower(str[i]);
+    }
+}
+
+bool convert_path_to_fakesym(const char *path, wchar_t *sym, char *extra_o)
+{
+    char root[16] = {0};
+    char vidstr[16] = {0};
+    char pidstr[16] = {0};
+    char mistr[16] = {0};
+    char extra[64] = {0};
+    sscanf(
+        path,
+        "%[^\\]\\%[^&]&%[^&]&%[^\\]\\%s",
+        root,
+        vidstr,
+        pidstr,
+        mistr,
+        extra);
+    strcpy(extra_o, extra);
+
+    strtolower(root);
+    strtolower(vidstr);
+    strtolower(pidstr);
+    strtolower(mistr);
+    strtolower(extra);
+
+    char buffer[CAMERA_DATA_STRING_SIZE];
+    snprintf(
+        buffer,
+        CAMERA_DATA_STRING_SIZE,
+        "\\\\?\\%s#%s&%s&%s#%s",
+        root,
+        vidstr,
+        pidstr,
+        mistr,
+        extra);
+
+    mbstowcs(sym, buffer, CAMERA_DATA_STRING_SIZE);
+
+    return true;
+}
+
+void fill_cam_struct(struct CameraData *data, const char *devid)
+{
+    char buffer[CAMERA_DATA_STRING_SIZE];
+
+    data->setup = false;
+
+    if (!devid || strlen(devid) == 0) {
+        devid = grab_next_camera_id(buffer, CAMERA_DATA_STRING_SIZE);
+    }
+
+    if (!devid || strlen(devid) == 0) {
+        // no more cameras remain?
+        return;
+    }
+
+    if (strlen(devid) >= CAMERA_DATA_STRING_SIZE) {
+        // error probably log something?
+        return;
+    }
+
+    // detect input type
+    if (check_four(devid, "\\\\?\\")) {
+        // SYMBOLIC_LINK
+        if (!convert_sym_to_path(devid, data->deviceInstancePath)) {
+            log_info("Could not convert %s to path", devid);
+            return;
+        }
+    } else if (check_four(devid, "USB\\")) {
+        // Device instance path
+        strcpy(data->deviceInstancePath, devid);
+        // continue
+    } else {
+        // UNKNOWN ENTRY
+        log_info("UNK: %s", devid);
+        log_info("Please enter the device instance path");
+        return;
+    }
+
+    if (!convert_path_to_fakesym(
+            data->deviceInstancePath,
+            data->deviceSymbolicLink,
+            data->extra_upper)) {
+        log_info("Could not convert %s to sym", data->deviceInstancePath);
+        return;
+    }
+
+    log_info("dev path: %s", data->deviceInstancePath);
+
+    // locate device nodes
+    DEVINST dnDevInst;
+    DEVINST parentDev;
+    CONFIGRET cmret;
+
+    cmret = CM_Locate_DevNodeA(
+        &dnDevInst, data->deviceInstancePath, CM_LOCATE_DEVNODE_NORMAL);
+
+    if (cmret != CR_SUCCESS) {
+        log_info("CM_Locate_DevNodeA fail: %s", data->deviceInstancePath);
+        return;
+    }
+
+    cmret = CM_Get_Parent(&parentDev, dnDevInst, 0);
+
+    if (cmret != CR_SUCCESS) {
+        log_info("CM_Get_Parent fail: %s", data->deviceInstancePath);
+        return;
+    }
+    cmret = CM_Get_Device_IDA(
+        parentDev, data->parent_deviceInstancePath, CAMERA_DATA_STRING_SIZE, 0);
+
+    if (cmret != CR_SUCCESS) {
+        log_info("CM_Get_Device_IDA parent fail: %s", data->deviceInstancePath);
+        return;
+    }
+
+    ULONG szAddr;
+    ULONG szDesc;
+
+    szAddr = 4;
+    szDesc = CAMERA_DATA_STRING_SIZE;
+    cmret = CM_Get_DevNode_Registry_PropertyA(
+        dnDevInst, CM_DRP_ADDRESS, NULL, &data->address, &szAddr, 0);
+
+    if (cmret != CR_SUCCESS) {
+        log_info(
+            "CM_Get_DevNode_Registry_PropertyA fail: %s",
+            data->deviceInstancePath);
+        return;
+    }
+
+    cmret = CM_Get_DevNode_Registry_PropertyA(
+        dnDevInst, CM_DRP_DEVICEDESC, NULL, &data->name, &szDesc, 0);
+
+    if (cmret != CR_SUCCESS) {
+        log_info(
+            "CM_Get_DevNode_Registry_PropertyA fail: %s",
+            data->deviceInstancePath);
+        return;
+    }
+
+    szAddr = 4;
+    szDesc = CAMERA_DATA_STRING_SIZE;
+    cmret = CM_Get_DevNode_Registry_PropertyA(
+        parentDev, CM_DRP_ADDRESS, NULL, &data->parent_address, &szAddr, 0);
+
+    if (cmret != CR_SUCCESS) {
+        log_info(
+            "CM_Get_DevNode_Registry_PropertyA parent fail: %s",
+            data->deviceInstancePath);
+        return;
+    }
+
+    cmret = CM_Get_DevNode_Registry_PropertyA(
+        parentDev, CM_DRP_DEVICEDESC, NULL, &data->parent_name, &szDesc, 0);
+
+    if (cmret != CR_SUCCESS) {
+        log_info(
+            "CM_Get_DevNode_Registry_PropertyA parent fail: %s",
+            data->deviceInstancePath);
+        return;
+    }
+
+    log_info("Found %s @ %d", data->name, data->address);
+    log_info("Parent %s @ %d", data->parent_name, data->parent_address);
+    data->setup = true;
+}

src/main/camhook/cam-detect.h

@@ -0,0 +1,29 @@
+#ifndef CAMHOOK_CAM_DETECT_H
+#define CAMHOOK_CAM_DETECT_H
+
+#include <stdbool.h>
+#include <wchar.h>
+
+#define CAMERA_DATA_STRING_SIZE 0x100
+
+struct CameraData {
+    bool setup;
+    char name[CAMERA_DATA_STRING_SIZE];
+    char deviceInstancePath[CAMERA_DATA_STRING_SIZE];
+    wchar_t deviceSymbolicLink[CAMERA_DATA_STRING_SIZE];
+    char extra_upper[CAMERA_DATA_STRING_SIZE];
+    int address;
+    char parent_name[CAMERA_DATA_STRING_SIZE];
+    char parent_deviceInstancePath[CAMERA_DATA_STRING_SIZE];
+    int parent_address;
+
+    bool fake_addressed;
+    int fake_address;
+
+    bool fake_located;
+    size_t fake_located_node;
+};
+
+void fill_cam_struct(struct CameraData *data, const char *devid);
+
+#endif

src/main/camhook/cam.c

@@ -19,72 +19,11 @@
 #include "hook/table.h"
 
 #include "camhook/cam.h"
+#include "camhook/cam-detect.h"
 
 #include "util/defs.h"
 #include "util/log.h"
 #include "util/str.h"
-#include "util/time.h"
-
-#define CAMERA_DATA_STRING_SIZE 0x100
-
-EXTERN_GUID(
-    MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,
-    0xc60ac5fe,
-    0x252a,
-    0x478f,
-    0xa0,
-    0xef,
-    0xbc,
-    0x8f,
-    0xa5,
-    0xf7,
-    0xca,
-    0xd3);
-EXTERN_GUID(
-    MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID,
-    0x8ac3587a,
-    0x4ae7,
-    0x42d8,
-    0x99,
-    0xe0,
-    0x0a,
-    0x60,
-    0x13,
-    0xee,
-    0xf9,
-    0x0f);
-EXTERN_GUID(
-    MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK,
-    0x58f0aad8,
-    0x22bf,
-    0x4f8a,
-    0xbb,
-    0x3d,
-    0xd2,
-    0xc4,
-    0x97,
-    0x8c,
-    0x6e,
-    0x2f);
-// define ourselves cause mingw has these wrong
-
-struct CameraData {
-    bool setup;
-    char name[CAMERA_DATA_STRING_SIZE];
-    char deviceInstancePath[CAMERA_DATA_STRING_SIZE];
-    wchar_t deviceSymbolicLink[CAMERA_DATA_STRING_SIZE];
-    char extra_upper[CAMERA_DATA_STRING_SIZE];
-    int address;
-    char parent_name[CAMERA_DATA_STRING_SIZE];
-    char parent_deviceInstancePath[CAMERA_DATA_STRING_SIZE];
-    int parent_address;
-
-    bool fake_addressed;
-    int fake_address;
-
-    bool fake_located;
-    size_t fake_located_node;
-};
 
 static struct CameraData camData[CAMHOOK_CONFIG_CAM_MAX];
 int camAddresses[CAMHOOK_CONFIG_CAM_MAX] = {
@@ -94,6 +33,8 @@ int camAddresses[CAMHOOK_CONFIG_CAM_MAX] = {
 static size_t num_addressed_cams = 0;
 static size_t num_located_cams = 0;
 
+static enum camhook_version camhook_version = CAMHOOK_OLD;
+
 static CONFIGRET my_CM_Locate_DevNodeA(
     PDEVINST pdnDevInst, DEVINSTID_A pDeviceID, ULONG ulFlags);
 
@@ -280,7 +221,7 @@ HRESULT my_GetAllocatedString(
     HRESULT ret;
     log_info("Inside: %s", __FUNCTION__);
 
-    // should probably check GUID, oh well
+    // should probably check GUID == MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK, oh well
     ret = real_GetAllocatedString(self, guidKey, ppwszValue, pcchLength);
     char *pMBBuffer = (char *) malloc(0x100);
     wcstombs(pMBBuffer, *ppwszValue, 0x100);
@@ -491,315 +432,8 @@ static HDEVINFO my_SetupDiGetClassDevsA(
     return real_SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags);
 }
 
-bool check_four(const char inA[4], const char inB[4])
+void camhook_set_version(enum camhook_version version) {
-{
+    camhook_version = version;
-    return (*(uint32_t *) inA == *(uint32_t *) inB);
-}
-
-char *grab_next_camera_id(char *buffer, size_t bsz)
-{
-    static size_t gotten = 0;
-
-    IMFAttributes *pAttributes = NULL;
-    IMFActivate **ppDevices = NULL;
-
-    buffer[0] = '\0';
-
-    HRESULT hr = MFCreateAttributes(&pAttributes, 1);
-
-    if (FAILED(hr)) {
-        log_info("MFCreateAttributes failed: %ld", hr);
-        goto done;
-    }
-
-    hr = pAttributes->lpVtbl->SetGUID(
-        pAttributes,
-        &MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,
-        &MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID);
-    if (FAILED(hr)) {
-        log_info("SetGUID failed: %ld", hr);
-        goto done;
-    }
-
-    UINT32 count;
-    hr = MFEnumDeviceSources(pAttributes, &ppDevices, &count);
-
-    if (FAILED(hr)) {
-        log_info("MFEnumDeviceSources failed: %ld", hr);
-        goto done;
-    }
-
-    if (count <= gotten) {
-        log_info("gotten failed: %d < %d", count, (int) gotten);
-        // not enough remaining
-        goto done;
-    }
-
-    wchar_t wSymLink[CAMERA_DATA_STRING_SIZE];
-    UINT32 sz;
-
-    hr = ppDevices[gotten]->lpVtbl->GetString(
-        ppDevices[gotten],
-        &MY_MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK,
-        wSymLink,
-        CAMERA_DATA_STRING_SIZE,
-        &sz);
-
-    if (FAILED(hr)) {
-        log_info("GetString failed: %ld", hr);
-        goto done;
-    }
-
-    wcstombs(buffer, wSymLink, bsz);
-    log_info("Detected webcam: %s\n", buffer);
-    ++gotten;
-
-done:
-    if (pAttributes) {
-        pAttributes->lpVtbl->Release(pAttributes);
-    }
-
-    for (DWORD i = 0; i < count; i++) {
-        if (ppDevices != NULL && ppDevices[i]) {
-            ppDevices[i]->lpVtbl->Release(ppDevices[i]);
-        }
-    }
-
-    CoTaskMemFree(ppDevices);
-
-    return buffer;
-}
-
-bool convert_sym_to_path(const char *sym, char *path)
-{
-    HDEVINFO DeviceInfoSet = SetupDiCreateDeviceInfoList(NULL, NULL);
-
-    if (DeviceInfoSet == INVALID_HANDLE_VALUE) {
-        log_info("Could not open SetupDiCreateDeviceInfoList\n");
-        return 0;
-    }
-
-    SP_DEVICE_INTERFACE_DATA DeviceInterfaceData = {0};
-    DeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
-
-    if (!SetupDiOpenDeviceInterfaceA(
-            DeviceInfoSet, sym, 0, &DeviceInterfaceData)) {
-        log_info("Could not SetupDiOpenDeviceInterfaceA\n");
-        return 0;
-    }
-
-    SP_DEVINFO_DATA DeviceInfoData = {0};
-    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
-
-    if (!SetupDiGetDeviceInterfaceDetailA(
-            DeviceInfoSet,
-            &DeviceInterfaceData,
-            NULL,
-            0,
-            NULL,
-            &DeviceInfoData)) {
-        if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
-            log_info("Could not SetupDiGetDeviceInterfaceDetailA\n");
-            return 0;
-        }
-    }
-
-    DWORD sz;
-
-    if (!SetupDiGetDeviceInstanceIdA(
-            DeviceInfoSet,
-            &DeviceInfoData,
-            path,
-            CAMERA_DATA_STRING_SIZE,
-            &sz)) {
-        log_info("Could not SetupDiGetDeviceInstanceIdA\n");
-        return 0;
-    }
-
-    if (DeviceInfoSet != INVALID_HANDLE_VALUE) {
-        if (!SetupDiDeleteDeviceInterfaceData(
-                DeviceInfoSet, &DeviceInterfaceData)) {
-            log_info("Could not SetupDiDeleteDeviceInterfaceData\n");
-            return 0;
-        }
-
-        SetupDiDestroyDeviceInfoList(DeviceInfoSet);
-    }
-
-    return 1;
-}
-
-void strtolower(char *str)
-{
-    for (size_t i = 0; str[i]; i++) {
-        str[i] = tolower(str[i]);
-    }
-}
-
-bool convert_path_to_fakesym(const char *path, wchar_t *sym, char *extra_o)
-{
-    char root[16] = {0};
-    char vidstr[16] = {0};
-    char pidstr[16] = {0};
-    char mistr[16] = {0};
-    char extra[64] = {0};
-    sscanf(
-        path,
-        "%[^\\]\\%[^&]&%[^&]&%[^\\]\\%s",
-        root,
-        vidstr,
-        pidstr,
-        mistr,
-        extra);
-    strcpy(extra_o, extra);
-
-    strtolower(root);
-    strtolower(vidstr);
-    strtolower(pidstr);
-    strtolower(mistr);
-    strtolower(extra);
-
-    char buffer[CAMERA_DATA_STRING_SIZE];
-    snprintf(
-        buffer,
-        CAMERA_DATA_STRING_SIZE,
-        "\\\\?\\%s#%s&%s&%s#%s",
-        root,
-        vidstr,
-        pidstr,
-        mistr,
-        extra);
-
-    mbstowcs(sym, buffer, CAMERA_DATA_STRING_SIZE);
-
-    return true;
-}
-
-void fill_cam_struct(struct CameraData *data, const char *devid)
-{
-    char buffer[CAMERA_DATA_STRING_SIZE];
-
-    data->setup = false;
-
-    if (!devid || strlen(devid) == 0) {
-        devid = grab_next_camera_id(buffer, CAMERA_DATA_STRING_SIZE);
-    }
-
-    if (!devid || strlen(devid) == 0) {
-        // no more cameras remain?
-        return;
-    }
-
-    if (strlen(devid) >= CAMERA_DATA_STRING_SIZE) {
-        // error probably log something?
-        return;
-    }
-
-    // detect input type
-    if (check_four(devid, "\\\\?\\")) {
-        // SYMBOLIC_LINK
-        if (!convert_sym_to_path(devid, data->deviceInstancePath)) {
-            log_info("Could not convert %s to path", devid);
-            return;
-        }
-    } else if (check_four(devid, "USB\\")) {
-        // Device instance path
-        strcpy(data->deviceInstancePath, devid);
-        // continue
-    } else {
-        // UNKNOWN ENTRY
-        log_info("UNK: %s", devid);
-        log_info("Please enter the device instance path");
-        return;
-    }
-
-    if (!convert_path_to_fakesym(
-            data->deviceInstancePath,
-            data->deviceSymbolicLink,
-            data->extra_upper)) {
-        log_info("Could not convert %s to sym", data->deviceInstancePath);
-        return;
-    }
-
-    log_info("dev path: %s", data->deviceInstancePath);
-
-    // locate device nodes
-    DEVINST dnDevInst;
-    DEVINST parentDev;
-    CONFIGRET cmret;
-
-    cmret = CM_Locate_DevNodeA(
-        &dnDevInst, data->deviceInstancePath, CM_LOCATE_DEVNODE_NORMAL);
-
-    if (cmret != CR_SUCCESS) {
-        log_info("CM_Locate_DevNodeA fail: %s", data->deviceInstancePath);
-        return;
-    }
-
-    cmret = CM_Get_Parent(&parentDev, dnDevInst, 0);
-
-    if (cmret != CR_SUCCESS) {
-        log_info("CM_Get_Parent fail: %s", data->deviceInstancePath);
-        return;
-    }
-    cmret = CM_Get_Device_IDA(
-        parentDev, data->parent_deviceInstancePath, CAMERA_DATA_STRING_SIZE, 0);
-
-    if (cmret != CR_SUCCESS) {
-        log_info("CM_Get_Device_IDA parent fail: %s", data->deviceInstancePath);
-        return;
-    }
-
-    ULONG szAddr;
-    ULONG szDesc;
-
-    szAddr = 4;
-    szDesc = CAMERA_DATA_STRING_SIZE;
-    cmret = CM_Get_DevNode_Registry_PropertyA(
-        dnDevInst, CM_DRP_ADDRESS, NULL, &data->address, &szAddr, 0);
-
-    if (cmret != CR_SUCCESS) {
-        log_info(
-            "CM_Get_DevNode_Registry_PropertyA fail: %s",
-            data->deviceInstancePath);
-        return;
-    }
-
-    cmret = CM_Get_DevNode_Registry_PropertyA(
-        dnDevInst, CM_DRP_DEVICEDESC, NULL, &data->name, &szDesc, 0);
-
-    if (cmret != CR_SUCCESS) {
-        log_info(
-            "CM_Get_DevNode_Registry_PropertyA fail: %s",
-            data->deviceInstancePath);
-        return;
-    }
-
-    szAddr = 4;
-    szDesc = CAMERA_DATA_STRING_SIZE;
-    cmret = CM_Get_DevNode_Registry_PropertyA(
-        parentDev, CM_DRP_ADDRESS, NULL, &data->parent_address, &szAddr, 0);
-
-    if (cmret != CR_SUCCESS) {
-        log_info(
-            "CM_Get_DevNode_Registry_PropertyA parent fail: %s",
-            data->deviceInstancePath);
-        return;
-    }
-
-    cmret = CM_Get_DevNode_Registry_PropertyA(
-        parentDev, CM_DRP_DEVICEDESC, NULL, &data->parent_name, &szDesc, 0);
-
-    if (cmret != CR_SUCCESS) {
-        log_info(
-            "CM_Get_DevNode_Registry_PropertyA parent fail: %s",
-            data->deviceInstancePath);
-        return;
-    }
-
-    log_info("Found %s @ %d", data->name, data->address);
-    log_info("Parent %s @ %d", data->parent_name, data->parent_address);
-    data->setup = true;
 }
 
 void camhook_init(struct camhook_config_cam *config_cam)

src/main/camhook/cam.h

@@ -3,6 +3,13 @@
 
 #include "camhook/config-cam.h"
 
+enum camhook_version {
+    CAMHOOK_OLD,
+    CAMHOOK_NEW,
+};
+
+void camhook_set_version(enum camhook_version version);
+
 void camhook_init(struct camhook_config_cam *config_cam);
 
 void camhook_fini(void);