V4L/DVB (5094): Pvrusb2: Introduce fake audio input selection

This should allow mplayer pvr:// to start. The trick is that no matter
what actual input we use under this "fake" one, it will be able to do
stereo :-)

Signed-off-by: Pantelis Koukousoulas <pakt223@freemail.gr>
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 91c4225..a728ca2 100644 (file)
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -321,13 +321,39 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
 
        case VIDIOC_ENUMAUDIO:
        {
+               /* pkt: FIXME: We are returning one "fake" input here
+                  which could very well be called "whatever_we_like".
+                  This is for apps that want to see an audio input
+                  just to feel comfortable, as well as to test if
+                  it can do stereo or sth. There is actually no guarantee
+                  that the actual audio input cannot change behind the app's
+                  back, but most applications should not mind that either.
+
+                  Hopefully, mplayer people will work with us on this (this
+                  whole mess is to support mplayer pvr://), or Hans will come
+                  up with a more standard way to say "we have inputs but we
+                  don 't want you to change them independent of video" which
+                  will sort this mess.
+                */
+               struct v4l2_audio *vin = arg;
                ret = -EINVAL;
+               if (vin->index > 0) break;
+               strncpy(vin->name, "PVRUSB2 Audio",14);
+               vin->capability = V4L2_AUDCAP_STEREO;
+               ret = 0;
+               break;
                break;
        }
 
        case VIDIOC_G_AUDIO:
        {
-               ret = -EINVAL;
+               /* pkt: FIXME: see above comment (VIDIOC_ENUMAUDIO) */
+               struct v4l2_audio *vin = arg;
+               memset(vin,0,sizeof(*vin));
+               vin->index = 0;
+               strncpy(vin->name, "PVRUSB2 Audio",14);
+               vin->capability = V4L2_AUDCAP_STEREO;
+               ret = 0;
                break;
        }