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https://code.videolan.org/videolan/vlc
synced 2024-09-04 09:11:33 +02:00
If the v4l2 driver supports the extended control api, use it to enumerate all the controls when the ControlReset function is called (it will reset all the controls which aren't in the MPEG class), else fallback to the old api.
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827f8b92b5
commit
d372e0d833
@ -3310,20 +3310,22 @@ static int ControlReset( vlc_object_t *p_obj, int i_fd )
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{
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struct v4l2_queryctrl queryctrl;
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int i_cid;
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memset( &queryctrl, 0, sizeof( queryctrl ) );
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/* public controls */
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for( i_cid = V4L2_CID_BASE;
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i_cid < V4L2_CID_LASTP1;
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i_cid ++ )
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queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
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if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
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{
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queryctrl.id = i_cid;
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if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
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/* Extended control API supported */
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queryctrl.id = V4L2_CTRL_FLAG_NEXT_CTRL;
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while( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
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{
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struct v4l2_control control;
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if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
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if( queryctrl.type == V4L2_CTRL_TYPE_CTRL_CLASS
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|| V4L2_CTRL_ID2CLASS( queryctrl.id ) == V4L2_CTRL_CLASS_MPEG )
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{
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queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
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continue;
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}
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struct v4l2_control control;
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memset( &control, 0, sizeof( control ) );
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control.id = queryctrl.id;
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if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
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@ -3337,31 +3339,62 @@ static int ControlReset( vlc_object_t *p_obj, int i_fd )
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: (const char *)queryctrl.name,
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queryctrl.id, queryctrl.default_value );
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}
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queryctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
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}
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}
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/* private controls */
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for( i_cid = V4L2_CID_PRIVATE_BASE;
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;
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i_cid ++ )
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else
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{
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queryctrl.id = i_cid;
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if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
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/* public controls */
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for( i_cid = V4L2_CID_BASE;
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i_cid < V4L2_CID_LASTP1;
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i_cid ++ )
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{
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struct v4l2_control control;
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if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
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continue;
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memset( &control, 0, sizeof( control ) );
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control.id = queryctrl.id;
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if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
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&& queryctrl.default_value != control.value )
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queryctrl.id = i_cid;
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if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
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{
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Control( p_obj, i_fd, (const char *)queryctrl.name,
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queryctrl.id, queryctrl.default_value );
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struct v4l2_control control;
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if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
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continue;
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memset( &control, 0, sizeof( control ) );
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control.id = queryctrl.id;
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if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
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&& queryctrl.default_value != control.value )
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{
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int i;
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for( i = 0; controls[i].psz_name != NULL; i++ )
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if( controls[i].i_cid == queryctrl.id ) break;
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Control( p_obj, i_fd,
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controls[i].psz_name ? controls[i].psz_name
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: (const char *)queryctrl.name,
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queryctrl.id, queryctrl.default_value );
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}
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}
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}
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else
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break;
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/* private controls */
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for( i_cid = V4L2_CID_PRIVATE_BASE;
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;
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i_cid ++ )
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{
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queryctrl.id = i_cid;
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if( ioctl( i_fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 )
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{
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struct v4l2_control control;
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if( queryctrl.flags & V4L2_CTRL_FLAG_DISABLED )
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continue;
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memset( &control, 0, sizeof( control ) );
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control.id = queryctrl.id;
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if( ioctl( i_fd, VIDIOC_G_CTRL, &control ) >= 0
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&& queryctrl.default_value != control.value )
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{
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Control( p_obj, i_fd, (const char *)queryctrl.name,
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queryctrl.id, queryctrl.default_value );
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}
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}
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else
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break;
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}
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}
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return VLC_SUCCESS;
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}
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