[FFmpeg-devel] [PATCH v2 1/3] lavu/hwcontext_d3d11va: Add option vendor_id

[Xiang, Haihao]

On Di, 2023-11-28 at 12:42 +0800, Xiang, Haihao wrote:
> From: Artem Galin <artem.galin at intel.com>
> 
> User may choose the hardware via option vendor_id when multiple
> hardwares are available.
> 
> Signed-off-by: Artem Galin <artem.galin at intel.com>
> Signed-off-by: Haihao Xiang <haihao.xiang at intel.com>
> ---
>  libavutil/hwcontext_d3d11va.c | 59 ++++++++++++++++++++++++++++++++++-
>  1 file changed, 58 insertions(+), 1 deletion(-)
> 
> diff --git a/libavutil/hwcontext_d3d11va.c b/libavutil/hwcontext_d3d11va.c
> index cc8c97d2b6..2fd3561c88 100644
> --- a/libavutil/hwcontext_d3d11va.c
> +++ b/libavutil/hwcontext_d3d11va.c
> @@ -552,6 +552,47 @@ static void d3d11va_device_uninit(AVHWDeviceContext
> *hwdev)
>      }
>  }
>  
> +static int d3d11va_device_find_adapter_by_vendor_id(AVHWDeviceContext *ctx,
> uint32_t flags, const char *vendor_id)
> +{
> +    HRESULT hr;
> +    IDXGIAdapter *adapter = NULL;
> +    IDXGIFactory2 *factory;
> +    int adapter_id = 0;
> +    long int id = strtol(vendor_id, NULL, 0);
> +
> +    hr = mCreateDXGIFactory(&IID_IDXGIFactory2, (void **)&factory);
> +    if (FAILED(hr)) {
> +        av_log(ctx, AV_LOG_ERROR, "CreateDXGIFactory returned error\n");
> +        return -1;
> +    }
> +
> +    while (IDXGIFactory2_EnumAdapters(factory, adapter_id++, &adapter) !=
> DXGI_ERROR_NOT_FOUND) {
> +        ID3D11Device* device = NULL;
> +        DXGI_ADAPTER_DESC adapter_desc;
> +
> +        hr = mD3D11CreateDevice(adapter, D3D_DRIVER_TYPE_UNKNOWN, NULL,
> flags, NULL, 0, D3D11_SDK_VERSION, &device, NULL, NULL);
> +        if (FAILED(hr)) {
> +            av_log(ctx, AV_LOG_DEBUG, "D3D11CreateDevice returned error, try
> next adapter\n");
> +            IDXGIAdapter_Release(adapter);
> +            continue;
> +        }
> +
> +        hr = IDXGIAdapter2_GetDesc(adapter, &adapter_desc);
> +        ID3D11Device_Release(device);
> +        IDXGIAdapter_Release(adapter);
> +        if (FAILED(hr)) {
> +            av_log(ctx, AV_LOG_DEBUG, "IDXGIAdapter2_GetDesc returned error,
> try next adapter\n");
> +            continue;
> +        } else if (adapter_desc.VendorId == id) {
> +            IDXGIFactory2_Release(factory);
> +            return adapter_id - 1;
> +        }
> +    }
> +
> +    IDXGIFactory2_Release(factory);
> +    return -1;
> +}
> +
>  static int d3d11va_device_create(AVHWDeviceContext *ctx, const char *device,
>                                   AVDictionary *opts, int flags)
>  {
> @@ -563,6 +604,7 @@ static int d3d11va_device_create(AVHWDeviceContext *ctx,
> const char *device,
>      UINT creationFlags = D3D11_CREATE_DEVICE_VIDEO_SUPPORT;
>      int is_debug       = !!av_dict_get(opts, "debug", NULL, 0);
>      int ret;
> +    int adapter = -1;
>  
>      // (On UWP we can't check this.)
>  #if !HAVE_UWP
> @@ -581,10 +623,25 @@ static int d3d11va_device_create(AVHWDeviceContext *ctx,
> const char *device,
>      }
>  
>      if (device) {
> +        adapter = atoi(device);
> +    } else {
> +        AVDictionaryEntry *e = av_dict_get(opts, "vendor_id", NULL, 0);
> +        if (e && e->value) {
> +            adapter = d3d11va_device_find_adapter_by_vendor_id(ctx,
> creationFlags, e->value);
> +            if (adapter < 0) {
> +                av_log(ctx, AV_LOG_ERROR, "Failed to find d3d11va adapter by
> "
> +                       "vendor id %s\n", e->value);
> +                return AVERROR_UNKNOWN;
> +            }
> +        }
> +    }
> +
> +    if (adapter >= 0) {
>          IDXGIFactory2 *pDXGIFactory;
> +
> +        av_log(ctx, AV_LOG_VERBOSE, "Selecting d3d11va adapter %d\n",
> adapter);
>          hr = mCreateDXGIFactory(&IID_IDXGIFactory2, (void **)&pDXGIFactory);
>          if (SUCCEEDED(hr)) {
> -            int adapter = atoi(device);
>              if (FAILED(IDXGIFactory2_EnumAdapters(pDXGIFactory, adapter,
> &pAdapter)))
>                  pAdapter = NULL;
>              IDXGIFactory2_Release(pDXGIFactory);

I'll merge this patchset if there are no more comments for v2

Thanks
Haihao