[PATCH] winegstreamer: Poll gst_pad_query_duration before converting from byte length.

[Connor McAdams]

On Mon, Apr 26, 2021 at 01:26:34PM -0400, Connor McAdams wrote:
> Poll gst_pad_query_duration a few times before giving up and trying to
> get duration by converting from byte-length. Fixes a bug in Fallout: New
> Vegas where the duration value is incorrect and causes the audio to
> loop.
> 
> Signed-off-by: Connor McAdams <cmcadams at codeweavers.com>
> ---
>  dlls/winegstreamer/wg_parser.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/dlls/winegstreamer/wg_parser.c b/dlls/winegstreamer/wg_parser.c
> index 5529321490e..391b0b26532 100644
> --- a/dlls/winegstreamer/wg_parser.c
> +++ b/dlls/winegstreamer/wg_parser.c
> @@ -1499,9 +1499,21 @@ static gboolean src_event_cb(GstPad *pad, GstObject *parent, GstEvent *event)
>  static LONGLONG query_duration(GstPad *pad)
>  {
>      gint64 duration, byte_length;
> +    unsigned int i;
>  
>      if (gst_pad_query_duration(pad, GST_FORMAT_TIME, &duration))
>          return duration / 100;
> +    /*
> +     * Sometimes we query duration too early, try again a few times before
> +     * giving up and trying to convert from byte length. If the duration can't
> +     * be found after 50ms, we probably have a bigger issue.
> +     */
> +    for (i = 0; i < 10; ++i)
> +    {
> +        g_usleep(5000);
> +        if (gst_pad_query_duration(pad, GST_FORMAT_TIME, &duration))
> +            return duration / 100;
> +    }
>  
>      WARN("Failed to query time duration; trying to convert from byte length.\n");
>  
> -- 
> 2.25.1
>
Woops, forgot to move the query_duration call below the caps check, will
resend a v2.