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 "winreg.h"
  54 #include "winnls.h"
  55 #include "winternl.h"
  56 #include "wine/debug.h"
  57
  58 #define CAP_DESC_MAX 32
  59
  60 WINE_DEFAULT_DEBUG_CHANNEL(avicap);
  61
  62
  63 /***********************************************************************
  64  *             capCreateCaptureWindowW   (AVICAP32.@)
  65  */
  66 HWND VFWAPI capCreateCaptureWindowW(LPCWSTR lpszWindowName, DWORD dwStyle, INT x,
  67                                     INT y, INT nWidth, INT nHeight, HWND hWnd,
  68                                     INT nID)
  69 {
  70     FIXME("%s, %08x, %08x, %08x, %08x, %08x, %p, %08x\n",
  71            debugstr_w(lpszWindowName), dwStyle,
  72            x, y, nWidth, nHeight, hWnd, nID);
  73     return 0;
  74 }
  75
  76 /***********************************************************************
  77  *             capCreateCaptureWindowA   (AVICAP32.@)
  78  */
  79 HWND VFWAPI capCreateCaptureWindowA(LPCSTR lpszWindowName, DWORD dwStyle, INT x,
  80                                     INT y, INT nWidth, INT nHeight, HWND hWnd,
  81                                     INT nID)
  82 {   UNICODE_STRING nameW;
  83     HWND retW;
  84
  85     if (lpszWindowName) RtlCreateUnicodeStringFromAsciiz(&nameW, lpszWindowName);
  86     else nameW.Buffer = NULL;
  87
  88     retW = capCreateCaptureWindowW(nameW.Buffer, dwStyle, x, y, nWidth, nHeight,
  89                                    hWnd, nID);
  90     RtlFreeUnicodeString(&nameW);
  91
  92     return retW;
  93 }
  94
  95 #ifdef HAVE_LINUX_VIDEODEV_H
  96
  97 static int xioctl(int fd, int request, void * arg)
  98 {
  99    int r;
 100
 101    do r = ioctl (fd, request, arg);
 102    while (-1 == r && EINTR == errno);
 103
 104    return r;
 105 }
 106
 107 static BOOL query_video_device(int devnum, char *name, int namesize, char *version, int versionsize)
 108 {
 109    int fd;
 110    char device[16];
 111    struct stat st;
 112    struct video_capability capa;
 113 #ifdef HAVE_V4L2
 114    struct v4l2_capability caps;
 115 #endif
 116
 117    snprintf(device, sizeof(device), "/dev/video%i", devnum);
 118
 119    if (stat (device, &st) == -1) {
 120       /* This is probably because the device does not exist */
 121       WARN("%s: %s\n", device, strerror(errno));
 122       return FALSE;
 123    }
 124
 125    if (!S_ISCHR (st.st_mode)) {
 126       ERR("%s: Not a device\n", device);
 127       return FALSE;
 128    }
 129
 130    fd = open(device, O_RDWR | O_NONBLOCK);
 131    if (fd == -1) {
 132       ERR("%s: Failed to open: %s\n", device, strerror(errno));
 133       return FALSE;
 134    }
 135
 136 #ifdef HAVE_V4L2
 137    memset(&caps, 0, sizeof(caps));
 138    if (xioctl(fd, VIDIOC_QUERYCAP, &caps) != -1) {
 139       lstrcpynA(name, (char *)caps.card, namesize);
 140       snprintf(version, versionsize, "%s v%u.%u.%u", (char *)caps.driver, (caps.version >> 16) & 0xFF,
 141                              (caps.version >> 8) & 0xFF, caps.version & 0xFF);
 142       close(fd);
 143       return TRUE;
 144    }
 145
 146    if (errno != EINVAL && errno != 515)
 147       WARN("%s: ioctl failed: %s -- Falling back to V4L\n", device, strerror(errno));
 148    else WARN("%s: Not a V4L2 compatible device, trying V4l 1\n", device);
 149 #endif /* HAVE_V4L2 */
 150
 151    memset(&capa, 0, sizeof(capa));
 152    if (xioctl(fd, VIDIOCGCAP, &capa) == -1) {
 153 /* errno 515 is used by some webcam drivers for unknown IOICTL command */
 154       if (errno != EINVAL && errno != 515)
 155          ERR("%s: Querying failed: %s\n", device, strerror(errno));
 156       else ERR("%s: Querying failed: Not a V4L compatible device\n", device);
 157       close(fd);
 158       return FALSE;
 159    }
 160
 161    lstrcpynA(name, capa.name, namesize);
 162    lstrcpynA(version, device, versionsize);
 163    close(fd);
 164    return TRUE;
 165 }
 166
 167 #else /* HAVE_LINUX_VIDEODEV_H */
 168
 169 static BOOL query_video_device(int devnum, char *name, int namesize, char *version, int versionsize)
 170 {
 171    ERR("Video 4 Linux support not enabled\n");
 172    return FALSE;
 173 }
 174
 175 #endif /* HAVE_LINUX_VIDEODEV_H */
 176
 177 /***********************************************************************
 178  *             capGetDriverDescriptionA   (AVICAP32.@)
 179  */
 180 BOOL VFWAPI capGetDriverDescriptionA(WORD wDriverIndex, LPSTR lpszName,
 181                                      INT cbName, LPSTR lpszVer, INT cbVer)
 182 {
 183    HRESULT retval;
 184    WCHAR devname[CAP_DESC_MAX], devver[CAP_DESC_MAX];
 185    TRACE("--> capGetDriverDescriptionW\n");
 186    retval = capGetDriverDescriptionW(wDriverIndex, devname, CAP_DESC_MAX, devver, CAP_DESC_MAX);
 187    if (retval) {
 188       WideCharToMultiByte(CP_ACP, 0, devname, -1, lpszName, cbName, NULL, NULL);
 189       WideCharToMultiByte(CP_ACP, 0, devver, -1, lpszVer, cbVer, NULL, NULL);
 190    }
 191    return retval;
 192 }
 193
 194 /***********************************************************************
 195  *             capGetDriverDescriptionW   (AVICAP32.@)
 196  */
 197 BOOL VFWAPI capGetDriverDescriptionW(WORD wDriverIndex, LPWSTR lpszName,
 198                                      INT cbName, LPWSTR lpszVer, INT cbVer)
 199 {
 200    char devname[CAP_DESC_MAX], devver[CAP_DESC_MAX];
 201
 202    if (!query_video_device(wDriverIndex, devname, CAP_DESC_MAX, devver, CAP_DESC_MAX)) return FALSE;
 203
 204    MultiByteToWideChar(CP_UNIXCP, 0, devname, -1, lpszName, cbName);
 205    MultiByteToWideChar(CP_UNIXCP, 0, devver, -1, lpszVer, cbVer);
 206    TRACE("Version: %s - Name: %s\n", debugstr_w(lpszVer), debugstr_w(lpszName));
 207    return TRUE;
 208 }