[FFmpeg-devel] [PATCH 5/7] hwcontext_vaapi: Add option to set driver name

Li, Zhong zhong.li at intel.com
Tue May 21 08:18:53 EEST 2019


> From: ffmpeg-devel [mailto:ffmpeg-devel-bounces at ffmpeg.org] On Behalf
> Of Mark Thompson
> Sent: Monday, May 6, 2019 10:49 PM
> To: ffmpeg-devel at ffmpeg.org
> Subject: [FFmpeg-devel] [PATCH 5/7] hwcontext_vaapi: Add option to set
> driver name
> 
> For example: -init_hw_device vaapi:/dev/dri/renderD128,driver=foo
> 
> This may be more convenient that using the environment variable, and
> allows loading different drivers for different devices in the same process.
> ---
>  libavutil/hwcontext_vaapi.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/libavutil/hwcontext_vaapi.c b/libavutil/hwcontext_vaapi.c index
> c151f8da93..35883d7855 100644
> --- a/libavutil/hwcontext_vaapi.c
> +++ b/libavutil/hwcontext_vaapi.c
> @@ -1598,6 +1598,25 @@ static int
> vaapi_device_create(AVHWDeviceContext *ctx, const char *device,
>          return AVERROR(EINVAL);
>      }
> 
> +    ent = av_dict_get(opts, "driver", NULL, 0);
> +    if (ent) {
> +#if VA_CHECK_VERSION(0, 38, 0)
> +        VAStatus vas;
> +        vas = vaSetDriverName(display, ent->value);
> +        if (vas != VA_STATUS_SUCCESS) {
> +            av_log(ctx, AV_LOG_ERROR, "Failed to set driver name to "
> +                   "%s: %d (%s).\n", ent->value, vas, vaErrorStr(vas));
> +            vaTerminate(display);
> +            return AVERROR_EXTERNAL;
> +        }
> +#else
> +        av_log(ctx, AV_LOG_WARNING, "Driver name setting is not "
> +               "supported with this VAAPI version.\n");
> +        vaTerminate(display);
> +        return AVERROR(ENOSYS);

Giving a warning message should be enough?


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