video4linux - wine

[MediaHost (TM)]

Question: Is there support for video4linux devices with wine? Is there 
some support for webcams? What are the settings (config)? I couldn't 
find anything useful on google concerning this issue....

[Mike McCormack]

There's currently no support, but you could add it via the Still Image 
(STI) API.  It's meant for scanners and webcams.  There's probably a way 
to add VFW (Video For Windows drivers) too.

I have written an IDL file for IStillImage, which I haven't gotten round 
to submitting as yet.  I've attached it incase you're interested... I 
think it still needs some fixing up.

Mike

MediaHost (TM) wrote:
> Question: Is there support for video4linux devices with wine? Is there 
> some support for webcams? What are the settings (config)? I couldn't 
> find anything useful on google concerning this issue....

/*
 * Copyright (C) 2004 Mike McCormack
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

import "oaidl.idl";

/* encoding neutral interfaces */
/*struct STIDEVICE;
typedef struct STIDEVICE* PSTIDEVICE ;
struct IStillImage;
struct STI;
typedef struct STI *PSTI;

struct STI_DEVICE_INFORMATIONW;
struct STIDEVICEW;

typedef struct IStillImageW IStillImageW,*PSTIW;
typedef struct STIDEVICEW* PSTIDEVICEW;
typedef struct STI_DEVICE_INFORMATIONW *PSTI_DEVICE_INFORMATIONW;

struct STIDEVICEA;

typedef struct IStillImageA IStillImageA,*PSTIA;
typedef struct STIDEVICEA* PSTIDEVICEA;
typedef struct STI_DEVICE_INFORMATIONA *PSTI_DEVICE_INFORMATIONA;

HRESULT WINAPI StiCreateInstanceA(HINSTANCE hinst, DWORD ver, PSTIA *ppSti, void **punk);
HRESULT WINAPI StiCreateInstanceW(HINSTANCE hinst, DWORD ver, PSTIW *ppSti, void **punk);
*/

typedef struct _STI_DEV_CAPS {
    DWORD dwGeneric;
} STI_DEV_CAPS, *PSTI_DEV_CAPS;

typedef struct _STI_DEVICE_STATUS {
    DWORD dwSize;
    DWORD StatusMask;
    DWORD dwOnlineState;
    DWORD dwHardwareStatusCode;
    DWORD dwEventHandlingState;
    DWORD dwPollingInterval;
} STI_DEVICE_STATUS, *PSTI_DEVICE_STATUS;

typedef struct _ERROR_INFOA {
    DWORD dwSize;
    DWORD dwGenericError;
    DWORD dwVendorError;
    CHAR szExtendedErrorText[255];
} STI_ERROR_INFOA, *PSTI_ERROR_INFOA;

typedef struct _ERROR_INFOW {
    DWORD dwSize;
    DWORD dwGenericError;
    DWORD dwVendorError;
    WCHAR szExtendedErrorText[255];
} STI_ERROR_INFOW, *PSTI_ERROR_INFOW;

typedef struct _STI_DIAGA {
    DWORD dwSize;
    DWORD dwBasicDiagCode;
    DWORD dwVendorDiagCode;
    DWORD dwStatusMask;
    STI_ERROR_INFOA sErrorInfo;
} STI_DIAGA, *LPSTI_DIAGA;

typedef struct _STI_DIAGW {
    DWORD dwSize;
    DWORD dwBasicDiagCode;
    DWORD dwVendorDiagCode;
    DWORD dwStatusMask;
    STI_ERROR_INFOW sErrorInfo;
} STI_DIAGW, *LPSTI_DIAGW;

[
  object,
  uuid(6CFA5A80-2DC8-11D0-90EA-00AA0060F86C),
  pointer_default(unique)
]
interface IStiDevice : IUnknown
{
    HRESULT Initialize(HINSTANCE hinst, LPCWSTR pwszDeviceName, DWORD dwVersion, DWORD dwMode);
    HRESULT GetCapabilities(PSTI_DEV_CAPS pDevCaps);
    HRESULT GetStatus(PSTI_DEVICE_STATUS pDevStatus);
    HRESULT DeviceReset();
    HRESULT Diagnostic(LPSTI_DIAG pBuffer);
    HRESULT Escape(STI_RAW_CONTROL EscapeFunction, LPVOID lpInData, DWORD cbInDataSize, LPVOID pOutData, DWORD dwOutDataSize, LPDWORD pdwActualData);
    HRESULT GetLastError(LPDWORD pdwLastDeviceError);
    HRESULT LockDevice(DWORD dwTimeOut);
    HRESULT UnLockDevice();
    HRESULT RawReadData(LPVOID lpBuffer, LPDWORD lpdwNumberOfBytes, LPOVERLAPPED lpOverlapped);
    HRESULT RawWriteData(LPVOID lpBuffer, DWORD nNumberOfBytes, LPOVERLAPPED lpOverlapped);
    HRESULT RawReadCommand(LPVOID lpBuffer, LPDWORD lpdwNumberOfBytes, LPOVERLAPPED lpOverlapped);
    HRESULT RawWriteCommand(LPVOID lpBuffer, DWORD nNumberOfBytes, LPOVERLAPPED lpOverlapped);
    HRESULT Subscribe(LPSTISUBSCRIBE lpSubscribe);
    HRESULT GetLastNotificationData(LPSTINOTIFY lpNotify);
    HRESULT UnSubscribe();
    HRESULT GetLastErrorInfo(STI_ERROR_INFO *pLastErrorInfo);
}

/*****************************************************************************
 * IStillImageW
 */
[
  object,
  uuid(641BD880-2DC8-11D0-90EA-00AA0060F86C),
  pointer_default(unique)
]
interface IStillImageW : IUnknown
{
    HRESULT Initialize(HINSTANCE hinst, DWORD dwVersion);
    HRESULT GetDeviceList(DWORD dwType, DWORD dwFlags, DWORD *pdwItemsReturned, LPVOID* ppBuffer);
    HRESULT GetDeviceInfo(LPWSTR pwszDeviceName, LPVOID* ppBuffer);
    HRESULT CreateDevice(LPWSTR pwszDeviceName, DWORD dwMode, PSTIDEVICE* pDevice, LPUNKNOWN* punkOuter);
    HRESULT GetDeviceValue(LPWSTR pwszDeviceName, LPWSTR pValueName, LPDWORD pType, LPBYTE pData, LPDWORD cbData);
    HRESULT SetDeviceValue(LPWSTR pwszDeviceName, LPWSTR pValueName, DWORD Type, LPBYTE pData, DWORD cbData);
    HRESULT GetSTILaunchInformation(LPWSTR pwszDeviceName, LPDWORD pdwEventCode, LPWSTR pwszEventName);
    HRESULT RegisterLaunchApplication(LPWSTR pwszAppName, LPWSTR pwszCommandLine);
    HRESULT UnregisterLaunchApplication(LPWSTR pwszAppName);
    HRESULT EnableHwNotifications(LPCWSTR pwszDeviceName, BOOL bNewState);
    HRESULT GetHwNotificationState(LPCWSTR pwszDeviceName, BOOL* pbCurrentState);
    HRESULT RefreshDeviceBus(LPCWSTR pwszDeviceName);
    HRESULT LaunchApplicationForDevice(LPWSTR pwszDeviceName, LPWSTR pwszAppName, LPSTINOTIFY pStiNotify);
    HRESULT SetupDeviceParameters(PSTI_DEVICE_INFORMATIONW);
    HRESULT WriteToErrorLog(DWORD dwMessageType, LPCWSTR pszMessage);
}

/*****************************************************************************
 * IStillImageA
 */
[
  object,
  uuid(A7B1F740-1D7F-11D1-ACA9-00A02438AD48),
  pointer_default(unique)
]
interface IStillImageA : IUnknown
{
    HRESULT Initialize(HINSTANCE hinst, DWORD dwVersion);
    HRESULT GetDeviceList(DWORD dwType, DWORD dwFlags, DWORD *pdwItemsReturned, LPVOID* ppBuffer);
    HRESULT GetDeviceInfo(LPSTR pwszDeviceName, LPVOID* ppBuffer);
    HRESULT CreateDevice(LPSTR pwszDeviceName, DWORD dwMode, PSTIDEVICE* pDevice, LPUNKNOWN* punkOuter);
    HRESULT GetDeviceValue(LPSTR pwszDeviceName, LPSTR pValueName, LPDWORD pType, LPBYTE pData, LPDWORD cbData);
    HRESULT SetDeviceValue(LPSTR pwszDeviceName, LPSTR pValueName, DWORD Type, LPBYTE pData, DWORD cbData);
    HRESULT GetSTILaunchInformation(LPSTR pwszDeviceName, LPDWORD pdwEventCode, LPSTR pwszEventName);
    HRESULT RegisterLaunchApplication(LPSTR pwszAppName, LPSTR pwszCommandLine);
    HRESULT UnregisterLaunchApplication(LPSTR pwszAppName);
    HRESULT EnableHwNotifications(LPCSTR pwszDeviceName, BOOL bNewState);
    HRESULT GetHwNotificationState(LPCSTR pwszDeviceName, BOOL* pbCurrentState);
    HRESULT RefreshDeviceBus(LPWSTR pwszDeviceName);
    HRESULT LaunchApplicationForDevice(LPSTR pwszDeviceName, LPSTR pwszAppName, LPSTINOTIFY pStiNotify);
    HRESULT SetupDeviceParameters(PSTI_DEVICE_INFORMATIONA);
    HRESULT WriteToErrorLog(DWORD dwMessageType, LPCSTR pszMessage);
}

[Rob Shearman]

Mike McCormack wrote:
> There's currently no support, but you could add it via the Still Image 
> (STI) API.  It's meant for scanners and webcams.  There's probably a 
> way to add VFW (Video For Windows drivers) too.
>
> I have written an IDL file for IStillImage, which I haven't gotten 
> round to submitting as yet.  I've attached it incase you're 
> interested... I think it still needs some fixing up.
>
> Mike
>
> MediaHost (TM) wrote:
> > Question: Is there support for video4linux devices with wine? Is 
> > there some support for webcams? What are the settings (config)? I 
> > couldn't find anything useful on google concerning this issue....

You're probably much better off implementing a DirectShow -> V4L filter, 
especially if you want to capture movies or sound.

Rob