VFW capture support

Originally committed as revision 12384 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -836,6 +836,8 @@ rtsp_demuxer_deps="sdp_demuxer"
 sdp_demuxer_deps="rtp_protocol mpegts_demuxer"
 v4l2_demuxer_deps="linux_videodev2_h"
 v4l_demuxer_deps="linux_videodev_h"
+vfwcap_demuxer_deps="capCreateCaptureWindow"
+vfwcap_demuxer_extralibs="-lvfw32"
 x11_grab_device_demuxer_deps="x11grab XShmCreateImage"
 x11_grab_device_demuxer_extralibs="-lX11 -lXext"
 
@@ -1753,6 +1755,8 @@ EOF
 check_header linux/videodev.h
 check_header linux/videodev2.h
 
+check_func2 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
+
 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
 { check_header dev/bktr/ioctl_meteor.h &&
   check_header dev/bktr/ioctl_bt848.h; } ||

libavdevice/Makefile

@@ -14,6 +14,7 @@ OBJS-$(CONFIG_OSS_DEMUXER)               += audio.o
 OBJS-$(CONFIG_OSS_MUXER)                 += audio.o
 OBJS-$(CONFIG_V4L2_DEMUXER)              += v4l2.o
 OBJS-$(CONFIG_V4L_DEMUXER)               += v4l.o
+OBJS-$(CONFIG_VFWCAP_DEMUXER)            += vfwcap.o
 OBJS-$(CONFIG_X11_GRAB_DEVICE_DEMUXER)   += x11grab.o
 
 # external libraries

libavdevice/alldevices.c

@@ -43,6 +43,7 @@ void avdevice_register_all(void)
     REGISTER_MUXDEMUX (OSS, oss);
     REGISTER_DEMUXER  (V4L2, v4l2);
     REGISTER_DEMUXER  (V4L, v4l);
+    REGISTER_DEMUXER  (VFWCAP, vfwcap);
     REGISTER_DEMUXER  (X11_GRAB_DEVICE, x11_grab_device);
 
     /* external libraries */