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v4l2: Workaround misbehaving devices (2 DVB cards in my case)

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This commit is contained in:
Richard Hosking 2007-12-05 22:51:29 +00:00
parent a192939a1b
commit c45b364eac
1 changed files with 23 additions and 14 deletions
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37
modules/access/v4l2.c
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@ -2032,9 +2032,12 @@ vlc_bool_t ProbeVideoDev( demux_t *p_demux, char *psz_device )
if( p_sys->dev_cap.capabilities & V4L2_CAP_VIDEO_CAPTURE )
{
while( ioctl( i_fd, VIDIOC_S_INPUT, &p_sys->i_input ) >= 0 )
struct v4l2_input t_input;
t_input.index = 0;
while( ioctl( i_fd, VIDIOC_ENUMINPUT, &t_input ) >= 0 )
{
p_sys->i_input++;
t_input.index = p_sys->i_input;
}
p_sys->p_inputs = calloc( 1, p_sys->i_input * sizeof( struct v4l2_input ) );
@ -2095,7 +2098,6 @@ vlc_bool_t ProbeVideoDev( demux_t *p_demux, char *psz_device )
}
/* Probe audio inputs */
if( p_sys->dev_cap.capabilities & V4L2_CAP_AUDIO )
{
while( p_sys->i_audio < 32 &&
@ -2118,14 +2120,15 @@ vlc_bool_t ProbeVideoDev( demux_t *p_demux, char *psz_device )
}
}
/* List tuner caps */
if( p_sys->dev_cap.capabilities & V4L2_CAP_TUNER )
{
struct v4l2_tuner tuner;
memset( &tuner, 0, sizeof(tuner) );
while( ioctl( i_fd, VIDIOC_S_TUNER, &tuner ) >= 0 )
while( ioctl( i_fd, VIDIOC_G_TUNER, &tuner ) >= 0 )
{
p_sys->i_tuner++;
memset( &tuner, 0, sizeof(tuner) );
tuner.index = p_sys->i_tuner;
}
@ -2213,7 +2216,8 @@ vlc_bool_t ProbeVideoDev( demux_t *p_demux, char *psz_device )
frmsize.pixel_format = p_sys->p_codecs[i_index].pixelformat;
if( ioctl( i_fd, VIDIOC_ENUM_FRAMESIZES, &frmsize ) < 0 )
{
msg_Err( p_demux, "Error while querying for frame size" );
/* Not all devices support this ioctl */
msg_Warn( p_demux, "Unable to query for frame sizes" );
}
else
{
@ -2332,6 +2336,7 @@ static void VideoControlListPrint( demux_t *p_demux, int i_fd,
vlc_bool_t b_reset )
{
struct v4l2_querymenu querymenu;
unsigned int i_mid;
if( queryctrl.flags & V4L2_CTRL_FLAG_GRABBED )
msg_Dbg( p_demux, " control is busy" );
if( queryctrl.flags & V4L2_CTRL_FLAG_READ_ONLY )
@ -2351,11 +2356,12 @@ static void VideoControlListPrint( demux_t *p_demux, int i_fd,
case V4L2_CTRL_TYPE_MENU:
msg_Dbg( p_demux, " menu control" );
memset( &querymenu, 0, sizeof( querymenu ) );
querymenu.id = queryctrl.id;
for( querymenu.index = queryctrl.minimum;
querymenu.index <= (unsigned)queryctrl.maximum;
querymenu.index++ )
for( i_mid = queryctrl.minimum;
i_mid <= (unsigned)queryctrl.maximum;
i_mid++ )
{
querymenu.index = i_mid;
querymenu.id = queryctrl.id;
if( ioctl( i_fd, VIDIOC_QUERYMENU, &querymenu ) >= 0 )
{
msg_Dbg( p_demux, " %d: %s",
@ -2403,14 +2409,16 @@ static void VideoControlListPrint( demux_t *p_demux, int i_fd,
static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
{
struct v4l2_queryctrl queryctrl;
int i_cid;
memset( &queryctrl, 0, sizeof( queryctrl ) );
/* List public controls */
for( queryctrl.id = V4L2_CID_BASE;
queryctrl.id < V4L2_CID_LASTP1;
queryctrl.id ++ )
for( i_cid = V4L2_CID_BASE;
i_cid < V4L2_CID_LASTP1;
i_cid ++ )
{
queryctrl.id = i_cid;
if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
{
if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
@ -2422,10 +2430,11 @@ static int VideoControlList( demux_t *p_demux, int i_fd, vlc_bool_t b_reset )
}
/* List private controls */
for( queryctrl.id = V4L2_CID_PRIVATE_BASE;
for( i_cid = V4L2_CID_PRIVATE_BASE;
;
queryctrl.id ++ )
i_cid ++ )
{
queryctrl.id = i_cid;
if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
{
if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )