[FFmpeg-devel] [PATCH] cuvid: support AVCodecContext.hw_device_ctx API

[Timo Rothenpieler]

> --- a/libavcodec/cuvid.c
> +++ b/libavcodec/cuvid.c
> @@ -802,9 +802,17 @@ static av_cold int cuvid_decode_init(AVCodecContext *avctx)
>               goto error;
>           }
>       } else {
> -        ret = av_hwdevice_ctx_create(&ctx->hwdevice, AV_HWDEVICE_TYPE_CUDA, ctx->cu_gpu, NULL, 0);
> -        if (ret < 0)
> -            goto error;
> +        if (avctx->hw_device_ctx) {
> +            ctx->hwdevice = av_buffer_ref(avctx->hw_device_ctx);
> +            if (!ctx->hwdevice) {
> +                ret = AVERROR(ENOMEM);
> +                goto error;
> +            }
> +        } else {
> +            ret = av_hwdevice_ctx_create(&ctx->hwdevice, AV_HWDEVICE_TYPE_CUDA, ctx->cu_gpu, NULL, 0);
> +            if (ret < 0)
> +                goto error;
> +        }
>   
>           ctx->hwframe = av_hwframe_ctx_alloc(ctx->hwdevice);
>           if (!ctx->hwframe) {
> 

Simple enough, LGTM