Date: Wed, 05 Mar 2003 09:20:54 -0600 From: Matthew Reimer <mreimer@vpop.net> To: ports@freebsd.org Subject: PATCH: fix ffmpeg NTSC audio recording Message-ID: <3E6615D6.4030603@vpop.net>
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Audio recording wasn't working for me, so I started poking around and
finally came up with a hack that made audio recording work. Apparently
the audio wasn't getting initialized properly; the fix seems to be to
issue TVTUNER_SETTYPE and a TVTUNER_SETCHNL ioctls like the pseudo-patch
below. Of course the channel set shouldn't be hard-coded.
Hopefully something like this will fix the problem for others as well.
Matt
--- grab_bsdbktr.c Thu Feb 27 11:43:18 2003
+++ grab_bsdbktr.c Thu Feb 27 14:08:51 2003
@@ -139,6 +140,17 @@
perror ("METEORSINPUT");
return -EIO;
}
+
+/* HACK */
+{
+ int d;
+
+ ioctl(s->tuner_fd, TVTUNER_GETCHNL, &d);
+
+ c = CHNLSET_NABCST;
+ ioctl(s->tuner_fd, TVTUNER_SETTYPE, &c);
+
+ ioctl(s->tuner_fd, TVTUNER_SETCHNL, &d);
+}
+
video_buf = mmap((caddr_t)0, width*height*3, PROT_READ, MAP_SHARED,
video_fd, (off_t) 0);
if (video_buf == MAP_FAILED) {
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