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>

1 files changed, 27 insertions, 1 deletions

diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 91c422599877..a728ca2a37d5 100644
--- 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;
         }