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Fix hid_open with serialnumber call.
Refactor for dynamic loading.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,143 @@ | ||
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| {$ifdef HIDAPI_LOAD_DYNAMICALLY} | ||
| {$define D} | ||
| {$define HIDAPI_VERSION := 0000} | ||
| {$else} | ||
| {$define S} | ||
| { | ||
| HidApi Version HIDAPI_VERSION | ||
| 0.9.0 0090 | ||
| 0.10.0 0100 | ||
| 0.11.2 0112 | ||
| } | ||
| {$ifndef HIDAPI_VERSION} | ||
| {$ERROR For static linking you need to define the version of the HidApi library. | ||
| i.e. for 0.9.0 use HIDAPI_VERSION = 0090 or for 0.10.0 HIDAPI_VERSION = 0100 } | ||
| {$endif} | ||
| {$endif} | ||
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| {$ifdef MSWINDOWS} | ||
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| {$if FPC_FULLVERSION > 30004} | ||
| {$define HIDAPI_CALL := WINAPI } | ||
| {$else} | ||
| {$define HIDAPI_CALL := stdcall } | ||
| {$endif} | ||
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| const | ||
| LIBHIDAPI = 'hidapi.dll'; | ||
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| {$else} | ||
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| {$define HIDAPI_CALL := cdecl } | ||
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| const | ||
| {$ifdef Darwin} | ||
| LIBHIDAPI = 'hidapi'; | ||
| {$linklib hidapi} | ||
| {$else} | ||
| LIBHIDAPI = 'hidapi-libusb'; | ||
| {$endif} | ||
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| {$endif} | ||
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| {$ifdef S}function{$else}var{$endif}hid_init{$ifdef D}: function{$endif}: Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_exit{$ifdef D}: function{$endif}: Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_enumerate{$ifdef D}: function{$endif}(vendor_id: Word; product_id: Word): PHidDeviceInfo; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}procedure{$else}var{$endif}hid_free_enumeration{$ifdef D}: procedure{$endif}(devs: PHidDeviceInfo); HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_open{$ifdef D}: function{$endif}(vendor_id: Word; product_id: Word; serial_number: PCWChar): PHidDevice; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_open_path{$ifdef D}: function{$endif}(path: PChar): PHidDevice; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_write{$ifdef D}: function{$endif}(device: PHidDevice; Data: Pointer; length: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_read_timeout{$ifdef D}: function{$endif}(device: PHidDevice; Data: Pointer; length: SizeInt; millisec: Integer): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_read{$ifdef D}: function{$endif}(device: PHidDevice; Data: Pointer; length: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_set_nonblocking{$ifdef D}: function{$endif}(device: PHidDevice; nonblock: Integer): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_send_feature_report{$ifdef D}: function{$endif}(device: PHidDevice; Data: Pointer; length: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_get_feature_report{$ifdef D}: function{$endif}(device: PHidDevice; Data: Pointer; length: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$if (HIDAPI_VERSION > 0090) or defined(D)} | ||
| {$ifdef S}function{$else}var{$endif}hid_get_input_report{$ifdef D}: function{$endif}(device: PHidDevice; Data: Pointer; length: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$endif} | ||
| {$ifdef S}procedure{$else}var{$endif}hid_close{$ifdef D}: procedure{$endif}(device: PHidDevice); HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_get_manufacturer_string{$ifdef D}: function{$endif}(device: PHidDevice; str: PCWChar; maxlen: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_get_product_string{$ifdef D}: function{$endif}(device: PHidDevice; str: PCWChar; maxlen: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_get_serial_number_string{$ifdef D}: function{$endif}(device: PHidDevice; str: PCWChar; maxlen: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_get_indexed_string{$ifdef D}: function{$endif}(device: PHidDevice; string_index: Integer; str: PCWChar; maxlen: SizeInt): Integer; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$ifdef S}function{$else}var{$endif}hid_error{$ifdef D}: function{$endif}(device: PHidDevice): PCWChar; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$if (HIDAPI_VERSION > 0090) or defined(D)} | ||
| {$ifdef S}function{$else}var{$endif}hid_version_str{$ifdef D}: function{$endif}: PChar; HIDAPI_CALL; {$ifdef S}external LIBHIDAPI;{$endif} | ||
| {$endif} | ||
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| {$ifdef HIDAPI_LOAD_DYNAMICALLY} | ||
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| ResourceString | ||
| SErrLoadFailed = 'Can not load hidapi library "%s". Check your installation.'; | ||
| SErrAlreadyLoaded = 'HidApi library %s already loaded.'; | ||
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| var | ||
| HidApiLibraryRefCount: byte; | ||
| HidApiLibraryHandle: THandle; | ||
| HidApiLoadedLibrary: String = ''; | ||
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| function TryInitializeHidApi(LibraryName: string): byte; | ||
| begin | ||
| Result := 0; | ||
| if HidApiLibraryRefCount = 0 then | ||
| begin | ||
| HidApiLibraryHandle := SafeLoadLibrary(LibraryName); | ||
| if HidApiLibraryHandle = NilHandle then | ||
| Exit; | ||
| Inc(HidApiLibraryRefCount); | ||
| HidApiLoadedLibrary := LibraryName; | ||
| Pointer(hid_init) := GetProcAddress(HidApiLibraryHandle, 'hid_init'); | ||
| Pointer(hid_exit) := GetProcAddress(HidApiLibraryHandle, 'hid_exit'); | ||
| Pointer(hid_enumerate) := GetProcAddress(HidApiLibraryHandle, 'hid_enumerate'); | ||
| Pointer(hid_free_enumeration) := GetProcAddress(HidApiLibraryHandle, 'hid_free_enumeration'); | ||
| Pointer(hid_open) := GetProcAddress(HidApiLibraryHandle, 'hid_open'); | ||
| Pointer(hid_open_path) := GetProcAddress(HidApiLibraryHandle, 'hid_open_path'); | ||
| Pointer(hid_write) := GetProcAddress(HidApiLibraryHandle, 'hid_write'); | ||
| Pointer(hid_read_timeout) := GetProcAddress(HidApiLibraryHandle, 'hid_read_timeout'); | ||
| Pointer(hid_read) := GetProcAddress(HidApiLibraryHandle, 'hid_read'); | ||
| Pointer(hid_set_nonblocking) := GetProcAddress(HidApiLibraryHandle, 'hid_set_nonblocking'); | ||
| Pointer(hid_send_feature_report) := GetProcAddress(HidApiLibraryHandle, 'hid_send_feature_report'); | ||
| Pointer(hid_get_feature_report) := GetProcAddress(HidApiLibraryHandle, 'hid_get_feature_report'); | ||
| Pointer(hid_get_input_report) := GetProcAddress(HidApiLibraryHandle, 'hid_get_input_report'); | ||
| Pointer(hid_close) := GetProcAddress(HidApiLibraryHandle, 'hid_close'); | ||
| Pointer(hid_get_manufacturer_string) := GetProcAddress(HidApiLibraryHandle, 'hid_get_manufacturer_string'); | ||
| Pointer(hid_get_product_string) := GetProcAddress(HidApiLibraryHandle, 'hid_get_product_string'); | ||
| Pointer(hid_get_serial_number_string) := GetProcAddress(HidApiLibraryHandle, 'hid_get_serial_number_string'); | ||
| Pointer(hid_get_indexed_string) := GetProcAddress(HidApiLibraryHandle, 'hid_get_indexed_string'); | ||
| Pointer(hid_error) := GetProcAddress(HidApiLibraryHandle, 'hid_error'); | ||
| Pointer(hid_version_str) := GetProcAddress(HidApiLibraryHandle, 'hid_version_str'); | ||
| end | ||
| else | ||
| Inc(HidApiLibraryRefCount); | ||
| Result := HidApiLibraryRefCount; | ||
| end; | ||
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| function InitializeHidApi(LibraryName: String = ''): byte; | ||
| begin | ||
| Result := TryInitializeHidApi(LibraryName); | ||
| if Result = 0 then | ||
| Raise EInOutError.CreateFmt(SErrLoadFailed,[LibraryName]) | ||
| else if (LibraryName <> HidApiLoadedLibrary) then | ||
| begin | ||
| Dec(HidApiLibraryRefCount); | ||
| Result := HidApiLibraryRefCount; | ||
| Raise EInOUtError.CreateFmt(SErrAlreadyLoaded,[HidApiLoadedLibrary]); | ||
| end; | ||
| end; | ||
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| function ReleaseHidApi: byte; | ||
| begin | ||
| if HidApiLibraryRefCount > 1 then | ||
| Dec(HidApiLibraryRefCount) | ||
| else if UnloadLibrary(HidApiLibraryHandle) then | ||
| begin | ||
| Dec(HidApiLibraryRefCount); | ||
| HidApiLibraryHandle := NilHandle; | ||
| HidApiLoadedLibrary := ''; | ||
| end; | ||
| Result := HidApiLibraryRefCount; | ||
| end; | ||
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| {$endif} |
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