[FFmpeg-devel] [PATCH v2 2/3] avfilter/vf_hwmap: get the AVHWDeviceType from outlink format

[Paul B Mahol]

On Thu, Jun 30, 2022 at 4:47 AM Tong Wu <tong1.wu-at-intel.com at ffmpeg.org>
wrote:

> When a derive_device_type is not specified, the hwmap filter should be
> able to retrieve AVHWDeviceType from outlink->format and create
> corresponding hwdevice context.
>
> Signed-off-by: Tong Wu <tong1.wu at intel.com>
> ---
>  libavfilter/vf_hwmap.c | 17 +++++++++++++----
>  1 file changed, 13 insertions(+), 4 deletions(-)
>
> diff --git a/libavfilter/vf_hwmap.c b/libavfilter/vf_hwmap.c
> index 2e03dfc1fe..136980c982 100644
> --- a/libavfilter/vf_hwmap.c
> +++ b/libavfilter/vf_hwmap.c
> @@ -70,23 +70,32 @@ static int hwmap_config_output(AVFilterLink *outlink)
>      device_is_derived = 0;
>
>      if (inlink->hw_frames_ctx) {
> +        enum AVHWDeviceType type;
>          hwfc = (AVHWFramesContext*)inlink->hw_frames_ctx->data;
>
>          if (ctx->derive_device_type) {
> -            enum AVHWDeviceType type;
> -
>              type = av_hwdevice_find_type_by_name(ctx->derive_device_type);
>              if (type == AV_HWDEVICE_TYPE_NONE) {
>                  av_log(avctx, AV_LOG_ERROR, "Invalid device type.\n");
>                  err = AVERROR(EINVAL);
>                  goto fail;
>              }
> +        } else {
> +            type = av_hwdevice_get_type_by_pix_fmt(outlink->format);
> +            if (type == AV_HWDEVICE_TYPE_NONE) {
> +                av_log(avctx, AV_LOG_ERROR, "Could not get device type
> from "
> +                       "format %s.\n",
> av_get_pix_fmt_name(outlink->format));
> +                err = AVERROR(EINVAL);
> +                goto fail;
> +            }
> +        }
>
> +        if (!device || ctx->derive_device_type) {
>              err = av_hwdevice_ctx_create_derived(&device, type,
> -                                                 hwfc->device_ref, 0);
> +                                                hwfc->device_ref, 0);
>              if (err < 0) {
>                  av_log(avctx, AV_LOG_ERROR, "Failed to created derived "
> -                       "device context: %d.\n", err);
> +                    "device context: %d.\n", err);
>

Looks like mixed re-indentation and functional changes in same commit.

>                  goto fail;
>              }
>              device_is_derived = 1;
> --
> 2.35.1.windows.2
>
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