dlls/avicap32/avicap32_main.c

   1 /*
   2  * Copyright 2002 Dmitry Timoshkov for CodeWeavers
   3  * Copyright 2005 Maarten Lankhorst
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21 #include "wine/port.h"
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <fcntl.h>
  26 #ifdef HAVE_SYS_IOCTL_H
  27 # include <sys/ioctl.h>
  28 #endif
  29 #ifdef HAVE_SYS_STAT_H
  30 # include <sys/stat.h>
  31 #endif
  32 #include <errno.h>
  33 #ifdef HAVE_SYS_TIME_H
  34 # include <sys/time.h>
  35 #endif
  36 #ifdef HAVE_ASM_TYPES_H
  37 # include <asm/types.h>
  38 #endif
  39 #ifdef HAVE_LINUX_VIDEODEV2_H
  40 # include <linux/videodev2.h>
  41 #endif
  42 #ifdef HAVE_UNISTD_H
  43 # include <unistd.h>
  44 #endif
  45
  46 #include "windef.h"
  47 #include "winbase.h"
  48 #include "wingdi.h"
  49 #include "winuser.h"
  50 #include "vfw.h"
  51 #include "winnls.h"
  52 #include "winternl.h"
  53 #include "wine/debug.h"
  54
  55 #define CAP_DESC_MAX 32
  56
  57 WINE_DEFAULT_DEBUG_CHANNEL(avicap);
  58
  59
  60 /***********************************************************************
  61  *             capCreateCaptureWindowW   (AVICAP32.@)
  62  */
  63 HWND VFWAPI capCreateCaptureWindowW(LPCWSTR lpszWindowName, DWORD dwStyle, INT x,
  64                                     INT y, INT nWidth, INT nHeight, HWND hWnd,
  65                                     INT nID)
  66 {
  67     FIXME("%s, %08x, %08x, %08x, %08x, %08x, %p, %08x\n",
  68            debugstr_w(lpszWindowName), dwStyle,
  69            x, y, nWidth, nHeight, hWnd, nID);
  70     return 0;
  71 }
  72
  73 /***********************************************************************
  74  *             capCreateCaptureWindowA   (AVICAP32.@)
  75  */
  76 HWND VFWAPI capCreateCaptureWindowA(LPCSTR lpszWindowName, DWORD dwStyle, INT x,
  77                                     INT y, INT nWidth, INT nHeight, HWND hWnd,
  78                                     INT nID)
  79 {   UNICODE_STRING nameW;
  80     HWND retW;
  81
  82     if (lpszWindowName) RtlCreateUnicodeStringFromAsciiz(&nameW, lpszWindowName);
  83     else nameW.Buffer = NULL;
  84
  85     retW = capCreateCaptureWindowW(nameW.Buffer, dwStyle, x, y, nWidth, nHeight,
  86                                    hWnd, nID);
  87     RtlFreeUnicodeString(&nameW);
  88
  89     return retW;
  90 }
  91
  92 #ifdef HAVE_LINUX_VIDEODEV2_H
  93
  94 static int xioctl(int fd, int request, void * arg)
  95 {
  96    int r;
  97
  98    do r = ioctl (fd, request, arg);
  99    while (-1 == r && EINTR == errno);
 100
 101    return r;
 102 }
 103
 104 static BOOL query_video_device(int devnum, char *name, int namesize, char *version, int versionsize)
 105 {
 106    int fd;
 107    char device[16];
 108    struct stat st;
 109    struct v4l2_capability caps;
 110
 111    snprintf(device, sizeof(device), "/dev/video%i", devnum);
 112
 113    if (stat (device, &st) == -1) {
 114       /* This is probably because the device does not exist */
 115       WARN("%s: %s\n", device, strerror(errno));
 116       return FALSE;
 117    }
 118
 119    if (!S_ISCHR (st.st_mode)) {
 120       ERR("%s: Not a device\n", device);
 121       return FALSE;
 122    }
 123
 124    fd = open(device, O_RDWR | O_NONBLOCK);
 125    if (fd == -1) {
 126       ERR("%s: Failed to open: %s\n", device, strerror(errno));
 127       return FALSE;
 128    }
 129
 130    memset(&caps, 0, sizeof(caps));
 131    if (xioctl(fd, VIDIOC_QUERYCAP, &caps) != -1) {
 132       lstrcpynA(name, (char *)caps.card, namesize);
 133       snprintf(version, versionsize, "%s v%u.%u.%u", (char *)caps.driver, (caps.version >> 16) & 0xFF,
 134                              (caps.version >> 8) & 0xFF, caps.version & 0xFF);
 135       close(fd);
 136       return TRUE;
 137    }
 138
 139    if (errno != EINVAL && errno != 515)
 140 /* errno 515 is used by some webcam drivers for unknown IOICTL command */
 141       ERR("%s: Querying failed: %s\n", device, strerror(errno));
 142    else ERR("%s: Querying failed: Not a V4L compatible device\n", device);
 143
 144    close(fd);
 145    return FALSE;
 146 }
 147
 148 #else /* HAVE_LINUX_VIDEODEV2_H */
 149
 150 static BOOL query_video_device(int devnum, char *name, int namesize, char *version, int versionsize)
 151 {
 152    ERR("Video 4 Linux support not enabled\n");
 153    return FALSE;
 154 }
 155
 156 #endif /* HAVE_LINUX_VIDEODEV2_H */
 157
 158 /***********************************************************************
 159  *             capGetDriverDescriptionA   (AVICAP32.@)
 160  */
 161 BOOL VFWAPI capGetDriverDescriptionA(WORD wDriverIndex, LPSTR lpszName,
 162                                      INT cbName, LPSTR lpszVer, INT cbVer)
 163 {
 164    BOOL retval;
 165    WCHAR devname[CAP_DESC_MAX], devver[CAP_DESC_MAX];
 166    TRACE("--> capGetDriverDescriptionW\n");
 167    retval = capGetDriverDescriptionW(wDriverIndex, devname, CAP_DESC_MAX, devver, CAP_DESC_MAX);
 168    if (retval) {
 169       WideCharToMultiByte(CP_ACP, 0, devname, -1, lpszName, cbName, NULL, NULL);
 170       WideCharToMultiByte(CP_ACP, 0, devver, -1, lpszVer, cbVer, NULL, NULL);
 171    }
 172    return retval;
 173 }
 174
 175 /***********************************************************************
 176  *             capGetDriverDescriptionW   (AVICAP32.@)
 177  */
 178 BOOL VFWAPI capGetDriverDescriptionW(WORD wDriverIndex, LPWSTR lpszName,
 179                                      INT cbName, LPWSTR lpszVer, INT cbVer)
 180 {
 181    char devname[CAP_DESC_MAX], devver[CAP_DESC_MAX];
 182
 183    if (!query_video_device(wDriverIndex, devname, CAP_DESC_MAX, devver, CAP_DESC_MAX)) return FALSE;
 184
 185    MultiByteToWideChar(CP_UNIXCP, 0, devname, -1, lpszName, cbName);
 186    MultiByteToWideChar(CP_UNIXCP, 0, devver, -1, lpszVer, cbVer);
 187    TRACE("Version: %s - Name: %s\n", debugstr_w(lpszVer), debugstr_w(lpszName));
 188    return TRUE;
 189 }