From d4ded92b024441e98b0ec80db6a11c074c2ed494 Mon Sep 17 00:00:00 2001
From: Zebediah Figura <z.figura12@gmail.com>
Date: Thu, 26 Nov 2020 22:34:31 -0600
Subject: [PATCH] qcap: Move v4l2 support to a new Unix library.

Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/qcap/qcap_main.c    |  2 +-
 dlls/qcap/qcap_private.h |  4 ++--
 dlls/qcap/v4l.c          | 25 ++++++++++++++-----------
 dlls/qcap/vfwcapture.c   |  5 +++--
 4 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/dlls/qcap/qcap_main.c b/dlls/qcap/qcap_main.c
index 411ef41ea20..e211b74dada 100644
--- a/dlls/qcap/qcap_main.c
+++ b/dlls/qcap/qcap_main.c
@@ -25,7 +25,7 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(qcap);
 
-static HINSTANCE qcap_instance;
+HINSTANCE qcap_instance;
 
 static LONG objects_ref = 0;
 
diff --git a/dlls/qcap/qcap_private.h b/dlls/qcap/qcap_private.h
index 379d9908637..046821142d2 100644
--- a/dlls/qcap/qcap_private.h
+++ b/dlls/qcap/qcap_private.h
@@ -30,6 +30,8 @@
 #include "wine/strmbase.h"
 #include "wine/unicode.h"
 
+extern HINSTANCE qcap_instance DECLSPEC_HIDDEN;
+
 extern DWORD ObjectRefCount(BOOL increment) DECLSPEC_HIDDEN;
 
 HRESULT audio_record_create(IUnknown *outer, IUnknown **out) DECLSPEC_HIDDEN;
@@ -59,6 +61,4 @@ struct video_capture_funcs
     BOOL (*read_frame)(struct video_capture_device *device, BYTE *data);
 };
 
-extern const struct video_capture_funcs v4l_funcs;
-
 #endif
diff --git a/dlls/qcap/v4l.c b/dlls/qcap/v4l.c
index 2ba423ea0e5..fd2c087640f 100644
--- a/dlls/qcap/v4l.c
+++ b/dlls/qcap/v4l.c
@@ -19,6 +19,10 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#if 0
+#pragma makedep unix
+#endif
+
 #define BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD  /* work around ioctl breakage on Android */
 
 #include "config.h"
@@ -47,7 +51,11 @@
 #include <unistd.h>
 #endif
 
+#include "ntstatus.h"
+#define WIN32_NO_STATUS
+#include "initguid.h"
 #include "qcap_private.h"
+#include "winternl.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(qcap);
 
@@ -558,17 +566,12 @@ const struct video_capture_funcs v4l_funcs =
     .read_frame = v4l_device_read_frame,
 };
 
-#else
-
-static struct video_capture_device *v4l_device_create(USHORT index)
+NTSTATUS CDECL __wine_init_unix_lib(HMODULE module, DWORD reason, const void *ptr_in, void *ptr_out)
 {
-    ERR("v4l2 was not present at compilation time.\n");
-    return NULL;
+    if (reason != DLL_PROCESS_ATTACH) return STATUS_SUCCESS;
+
+    *(const struct video_capture_funcs **)ptr_out = &v4l_funcs;
+    return STATUS_SUCCESS;
 }
 
-const struct video_capture_funcs v4l_funcs =
-{
-    .create = v4l_device_create,
-};
-
-#endif /* defined(VIDIOCMCAPTURE) */
+#endif /* HAVE_LINUX_VIDEODEV2_H */
diff --git a/dlls/qcap/vfwcapture.c b/dlls/qcap/vfwcapture.c
index 8123dc4f6f7..7b8787ef99f 100644
--- a/dlls/qcap/vfwcapture.c
+++ b/dlls/qcap/vfwcapture.c
@@ -19,6 +19,7 @@
  */
 
 #include "qcap_private.h"
+#include "winternl.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(qcap);
 
@@ -839,7 +840,7 @@ static const IAMVideoControlVtbl IAMVideoControl_VTable =
 
 static BOOL WINAPI load_capture_funcs(INIT_ONCE *once, void *param, void **context)
 {
-    capture_funcs = &v4l_funcs;
+    __wine_init_unix_lib(qcap_instance, DLL_PROCESS_ATTACH, NULL, &capture_funcs);
     return TRUE;
 }
 
@@ -850,7 +851,7 @@ HRESULT vfw_capture_create(IUnknown *outer, IUnknown **out)
     static const WCHAR source_name[] = {'O','u','t','p','u','t',0};
     struct vfw_capture *object;
 
-    if (!InitOnceExecuteOnce(&init_once, load_capture_funcs, NULL, NULL))
+    if (!InitOnceExecuteOnce(&init_once, load_capture_funcs, NULL, NULL) || !capture_funcs)
         return E_FAIL;
 
     if (!(object = CoTaskMemAlloc(sizeof(*object))))