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authorschodet2004-08-06 18:28:27 +0000
committerschodet2004-08-06 18:28:27 +0000
commitd09677714e32411a91a721ce41c522507ba38cb7 (patch)
tree5186d1a61f28fff5f208eea0d76d90580fa86e30 /2004/i/nono/src
parent159a899444725bc31da0845df014cf548163eedc (diff)
Ajout de Video4Linux::wait()
Diffstat (limited to '2004/i/nono/src')
-rw-r--r--2004/i/nono/src/video4linux/video4linux.cc23
-rw-r--r--2004/i/nono/src/video4linux/video4linux.h2
2 files changed, 25 insertions, 0 deletions
diff --git a/2004/i/nono/src/video4linux/video4linux.cc b/2004/i/nono/src/video4linux/video4linux.cc
index 7781b79..ca0a92a 100644
--- a/2004/i/nono/src/video4linux/video4linux.cc
+++ b/2004/i/nono/src/video4linux/video4linux.cc
@@ -31,6 +31,7 @@
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <iostream> //XXX
+#include <sys/types.h>
/// Constructeur.
Video4Linux::Video4Linux (const char *dev, ColorSpace colorSpace, int
@@ -117,6 +118,28 @@ Video4Linux::calibrate (void)
std::cout << "ok" << std::endl;
}
+/// Attend qu'une image soit disponible, retourne true si oui.
+bool
+Video4Linux::wait (int timeout/*-1*/)
+{
+ fd_set fds;
+ int r;
+ FD_ZERO (&fds);
+ FD_SET (fd_, &fds);
+ if (timeout != -1)
+ {
+ timeval to;
+ to.tv_sec = timeout / 1000;
+ to.tv_usec = timeout % 1000 * 1000;
+ r = select (FD_SETSIZE, &fds, 0, 0, &to);
+ }
+ else
+ {
+ r = select (FD_SETSIZE, &fds, 0, 0, 0);
+ }
+ return r == 1;
+}
+
/// Ouvre le périphérique.
void
Video4Linux::open (const char *dev)
diff --git a/2004/i/nono/src/video4linux/video4linux.h b/2004/i/nono/src/video4linux/video4linux.h
index 43539ca..75f2ed9 100644
--- a/2004/i/nono/src/video4linux/video4linux.h
+++ b/2004/i/nono/src/video4linux/video4linux.h
@@ -56,6 +56,8 @@ class Video4Linux : public ImageLoader
int read (void *buf, int size) const;
/// Calibre la caméra.
void calibrate (void);
+ /// Attend qu'une image soit disponible, retourne true si oui.
+ bool wait (int timeout = -1);
protected:
/// Ouvre le périphérique.
void open (const char *dev);