Re: [FFmpeg-devel] [PATCH 1/2] configure: Remove a redundant check for UWP mode

["Martin Storsjö" <martin@martin.st>]

On Fri, 22 Dec 2023, Wu, Tong1 wrote:

>
>> Subject: [FFmpeg-devel] [PATCH 1/2] configure: Remove a redundant check for
>> UWP mode
>>
>> The check for UWP mode was duplicated from right above, in
>> d54127c41a81cf2078a3504f78e0e4232cfe11b7.
>>
>> Also, instead of several lines with "enabled uwp && ...", make one
>> "if enabled uwp; then" block.
>> ---
>> configure | 30 +++++++++++-------------------
>> 1 file changed, 11 insertions(+), 19 deletions(-)
>>
>> diff --git a/configure b/configure
>> index af0bebc1ac..69b755f274 100755
>> --- a/configure
>> +++ b/configure
>> @@ -7102,9 +7102,8 @@ fi
>>
>> check_func_headers "windows.h" CreateDIBSection
>> "$gdigrab_indev_extralibs"
>>
>> -# d3d11va requires linking directly to dxgi and d3d11 if not building for
>> -# the desktop api partition
>> -test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
>> +# check if building for desktop or uwp
>> +test_cpp <<EOF && enable uwp
>> #ifdef WINAPI_FAMILY
>> #include <winapifamily.h>
>> #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
>> @@ -7117,23 +7116,16 @@ test_cpp <<EOF && enable uwp &&
>> d3d11va_extralibs="-ldxgi -ld3d11"
>> #endif
>> EOF
>>
>> -# vaapi_win32 requires linking directly to dxgi if not building for
>> -# the desktop api partition
>> -test_cpp <<EOF && enable uwp && vaapi_win32_extralibs="-ldxgi"
>> -#ifdef WINAPI_FAMILY
>> -#include <winapifamily.h>
>> -#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
>> -#error desktop, not uwp
>> -#else
>> -// WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
>> -#endif
>> -#else
>> -#error no family set
>> -#endif
>> -EOF
>> +mediafoundation_extralibs="-lmfuuid -lole32 -lstrmiids"
>>
>> -# mediafoundation requires linking directly to mfplat if building for uwp target
>> -enabled uwp && mediafoundation_extralibs="-lmfplat -lmfuuid -lole32 -
>> lstrmiids" || mediafoundation_extralibs="-lmfuuid -lole32 -lstrmiids"
>> +if enabled uwp; then
>> +    # In UWP mode, we can't use LoadLibrary+GetProcAddress to conditionally
>> +    # try to load these APIs at runtime, like we do in regular desktop mode -
>> +    # therefore, we need to link directly against these APIs.
>> +    d3d11va_extralibs="-ldxgi -ld3d11"
>> +    vaapi_win32_extralibs="-ldxgi"
>> +    mediafoundation_extralibs="-lmfplat $mediafoundation_extralibs"
>> +fi
>>
>> enabled libdrm &&
>>     check_pkg_config libdrm_getfb2 libdrm "xf86drmMode.h"
>> drmModeGetFB2
>> --
>> 2.34.1
>
> LGTM, thx.

Does that cover patch 2/2, which fixes linking errors in the UWP 
configurations, as well?

// Martin

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