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 #ifdef HAVE_SYS_ERRNO_H
  33 # include <sys/errno.h>
  34 #endif
  35 #ifdef HAVE_SYS_TIME_H
  36 # include <sys/time.h>
  37 #endif
  38 #ifdef HAVE_ASM_TYPES_H
  39 # include <asm/types.h>
  40 #endif
  41 #ifdef HAVE_LINUX_VIDEODEV_H
  42 # include <linux/videodev.h>
  43 #endif
  44 #ifdef HAVE_UNISTD_H
  45 # include <unistd.h>
  46 #endif
  47
  48 #include "windef.h"
  49 #include "winbase.h"
  50 #include "wingdi.h"
  51 #include "winuser.h"
  52 #include "vfw.h"
  53 #include "winnls.h"
  54 #include "winternl.h"
  55 #include "wine/debug.h"
  56
  57 #define CAP_DESC_MAX 32
  58
  59 WINE_DEFAULT_DEBUG_CHANNEL(avicap);
  60
  61
  62 /***********************************************************************
  63  *             capCreateCaptureWindowW   (AVICAP32.@)
  64  */
  65 HWND VFWAPI capCreateCaptureWindowW(LPCWSTR lpszWindowName, DWORD dwStyle, INT x,
  66                                     INT y, INT nWidth, INT nHeight, HWND hWnd,
  67                                     INT nID)
  68 {
  69     FIXME("%s, %08x, %08x, %08x, %08x, %08x, %p, %08x\n",
  70            debugstr_w(lpszWindowName), dwStyle,
  71            x, y, nWidth, nHeight, hWnd, nID);
  72     return 0;
  73 }
  74
  75 /***********************************************************************
  76  *             capCreateCaptureWindowA   (AVICAP32.@)
  77  */
  78 HWND VFWAPI capCreateCaptureWindowA(LPCSTR lpszWindowName, DWORD dwStyle, INT x,
  79                                     INT y, INT nWidth, INT nHeight, HWND hWnd,
  80                                     INT nID)
  81 {   UNICODE_STRING nameW;
  82     HWND retW;
  83
  84     if (lpszWindowName) RtlCreateUnicodeStringFromAsciiz(&nameW, lpszWindowName);
  85     else nameW.Buffer = NULL;
  86
  87     retW = capCreateCaptureWindowW(nameW.Buffer, dwStyle, x, y, nWidth, nHeight,
  88                                    hWnd, nID);
  89     RtlFreeUnicodeString(&nameW);
  90
  91     return retW;
  92 }
  93
  94 #ifdef HAVE_LINUX_VIDEODEV_H
  95
  96 static int xioctl(int fd, int request, void * arg)
  97 {
  98    int r;
  99
 100    do r = ioctl (fd, request, arg);
 101    while (-1 == r && EINTR == errno);
 102
 103    return r;
 104 }
 105
 106 static BOOL query_video_device(int devnum, char *name, int namesize, char *version, int versionsize)
 107 {
 108    int fd;
 109    char device[16];
 110    struct stat st;
 111    struct video_capability capa;
 112 #ifdef HAVE_V4L2
 113    struct v4l2_capability caps;
 114 #endif
 115
 116    snprintf(device, sizeof(device), "/dev/video%i", devnum);
 117
 118    if (stat (device, &st) == -1) {
 119       /* This is probably because the device does not exist */
 120       WARN("%s: %s\n", device, strerror(errno));
 121       return FALSE;
 122    }
 123
 124    if (!S_ISCHR (st.st_mode)) {
 125       ERR("%s: Not a device\n", device);
 126       return FALSE;
 127    }
 128
 129    fd = open(device, O_RDWR | O_NONBLOCK);
 130    if (fd == -1) {
 131       ERR("%s: Failed to open: %s\n", device, strerror(errno));
 132       return FALSE;
 133    }
 134
 135 #ifdef HAVE_V4L2
 136    memset(&caps, 0, sizeof(caps));
 137    if (xioctl(fd, VIDIOC_QUERYCAP, &caps) != -1) {
 138       lstrcpynA(name, (char *)caps.card, namesize);
 139       snprintf(version, versionsize, "%s v%u.%u.%u", (char *)caps.driver, (caps.version >> 16) & 0xFF,
 140                              (caps.version >> 8) & 0xFF, caps.version & 0xFF);
 141       close(fd);
 142       return TRUE;
 143    }
 144
 145    if (errno != EINVAL && errno != 515)
 146       WARN("%s: ioctl failed: %s -- Falling back to V4L\n", device, strerror(errno));
 147    else WARN("%s: Not a V4L2 compatible device, trying V4l 1\n", device);
 148 #endif /* HAVE_V4L2 */
 149
 150    memset(&capa, 0, sizeof(capa));
 151    if (xioctl(fd, VIDIOCGCAP, &capa) == -1) {
 152 /* errno 515 is used by some webcam drivers for unknown IOICTL command */
 153       if (errno != EINVAL && errno != 515)
 154          ERR("%s: Querying failed: %s\n", device, strerror(errno));
 155       else ERR("%s: Querying failed: Not a V4L compatible device\n", device);
 156       close(fd);
 157       return FALSE;
 158    }
 159
 160    lstrcpynA(name, capa.name, namesize);
 161    lstrcpynA(version, device, versionsize);
 162    close(fd);
 163    return TRUE;
 164 }
 165
 166 #else /* HAVE_LINUX_VIDEODEV_H */
 167
 168 static BOOL query_video_device(int devnum, char *name, int namesize, char *version, int versionsize)
 169 {
 170    ERR("Video 4 Linux support not enabled\n");
 171    return FALSE;
 172 }
 173
 174 #endif /* HAVE_LINUX_VIDEODEV_H */
 175
 176 /***********************************************************************
 177  *             capGetDriverDescriptionA   (AVICAP32.@)
 178  */
 179 BOOL VFWAPI capGetDriverDescriptionA(WORD wDriverIndex, LPSTR lpszName,
 180                                      INT cbName, LPSTR lpszVer, INT cbVer)
 181 {
 182    BOOL retval;
 183    WCHAR devname[CAP_DESC_MAX], devver[CAP_DESC_MAX];
 184    TRACE("--> capGetDriverDescriptionW\n");
 185    retval = capGetDriverDescriptionW(wDriverIndex, devname, CAP_DESC_MAX, devver, CAP_DESC_MAX);
 186    if (retval) {
 187       WideCharToMultiByte(CP_ACP, 0, devname, -1, lpszName, cbName, NULL, NULL);
 188       WideCharToMultiByte(CP_ACP, 0, devver, -1, lpszVer, cbVer, NULL, NULL);
 189    }
 190    return retval;
 191 }
 192
 193 /***********************************************************************
 194  *             capGetDriverDescriptionW   (AVICAP32.@)
 195  */
 196 BOOL VFWAPI capGetDriverDescriptionW(WORD wDriverIndex, LPWSTR lpszName,
 197                                      INT cbName, LPWSTR lpszVer, INT cbVer)
 198 {
 199    char devname[CAP_DESC_MAX], devver[CAP_DESC_MAX];
 200
 201    if (!query_video_device(wDriverIndex, devname, CAP_DESC_MAX, devver, CAP_DESC_MAX)) return FALSE;
 202
 203    MultiByteToWideChar(CP_UNIXCP, 0, devname, -1, lpszName, cbName);
 204    MultiByteToWideChar(CP_UNIXCP, 0, devver, -1, lpszVer, cbVer);
 205    TRACE("Version: %s - Name: %s\n", debugstr_w(lpszVer), debugstr_w(lpszName));
 206    return TRUE;
 207 }