On Mon, 27 Mar 2017 21:38:19 +0100
Mark Thompson <s...@jkqxz.net> wrote:

> Test only, not to commit in this form.
> ---
>  avtools/avconv_hw.c | 29 ++++++++++++++++++++++++++++-
>  1 file changed, 28 insertions(+), 1 deletion(-)
> 
> diff --git a/avtools/avconv_hw.c b/avtools/avconv_hw.c
> index fd1618389..71a3c2772 100644
> --- a/avtools/avconv_hw.c
> +++ b/avtools/avconv_hw.c
> @@ -376,8 +376,35 @@ fail:
>  int hwaccel_decode_init(AVCodecContext *avctx)
>  {
>      InputStream *ist = avctx->opaque;
> +    AVBufferRef *hw_frames_ref;
> +    AVHWFramesContext *hw_frames;
> +    int err;
> +
> +    if (!avctx->hw_device_ctx)
> +        return AVERROR(ENOSYS);
> +
> +    hw_frames_ref = av_hwframe_ctx_alloc(avctx->hw_device_ctx);
> +    if (!hw_frames_ref)
> +        return AVERROR(ENOMEM);
> +    hw_frames = (AVHWFramesContext*)hw_frames_ref->data;
> +
> +    err = avcodec_probe_hw(avctx, hw_frames_ref);
> +    if (err < 0) {
> +        av_log(avctx, AV_LOG_ERROR, "Decode with %s not supported: %d.\n",
> +               av_hwdevice_get_type_name(hw_frames->device_ctx->type), err);
> +        goto fail;
> +    }
> +
> +    av_log(avctx, AV_LOG_ERROR, "Decode with %s supported; %d frames "
> +           "of type %d/%d and size %dx%d are required.\n",
> +           av_hwdevice_get_type_name(hw_frames->device_ctx->type),
> +           hw_frames->initial_pool_size, hw_frames->format, 
> hw_frames->sw_format,
> +           hw_frames->width, hw_frames->height);
>  
>      ist->hwaccel_retrieve_data = &hwaccel_retrieve_data;
>  
> -    return 0;
> +    err = 0;
> +fail:
> +    av_buffer_unref(&hw_frames_ref);
> +    return err;
>  }

LGTM, under the condition of whatever happening to patch 3/10.

All the other patches I didn't comment on LGTM as well.
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