Re: [FFmpeg-devel] [PATCH] avdevice/avfoundation: replace AVCaptureDevice with new api

[Thilo Borgmann via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

Am 05.12.23 um 15:16 schrieb Thilo Borgmann via ffmpeg-devel:
> Hi,
> 
> Am 05.12.23 um 14:33 schrieb xufuji456 via ffmpeg-devel:
>> Building with iOS platform, the compiler has a warning: "'devicesWithMediaType:' is deprecated: first deprecated in iOS 10.0 - Use AVCaptureDeviceDiscoverySession instead"
>>
>> Signed-off-by: xufuji456 <839789740@qq.com>
>> ---
>>   libavdevice/avfoundation.m | 25 ++++++++++++++++++++-----
>>   1 file changed, 20 insertions(+), 5 deletions(-)
>>
>> diff --git a/libavdevice/avfoundation.m b/libavdevice/avfoundation.m
>> index 36ad834753..1bc99d543a 100644
>> --- a/libavdevice/avfoundation.m
>> +++ b/libavdevice/avfoundation.m
>> @@ -761,6 +761,21 @@ static int get_audio_config(AVFormatContext *s)
>>       return 0;
>>   }
>> +static NSArray* getDevicesWithMediaType(AVMediaType mediaType) {
> 
> 
>> +#if ((TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MAX_ALLOWED >= 100000) || (TARGET_OS_OSX && __MAC_OS_X_VERSION_MAX_ALLOWED >= 101500))
>> +    if (@available(macOS 10.15, iOS 10.0, *)) {
> 
> The preprocessor guard is meant to void the @available condition.
> 
> Also something appears not yet to achieve what you want, as on MacOS 13.4 I still get the deprication warning:
> 
> libavdevice/avfoundation.m:776:29: warning: 'devicesWithMediaType:' is deprecated: first deprecated in macOS 10.15 - Use AVCaptureDeviceDiscoverySession instead. [-Wdeprecated-declarations]
>      return [AVCaptureDevice devicesWithMediaType:mediaType];
> 
> 
> 
>> +        AVCaptureDeviceDiscoverySession *captureDeviceDiscoverySession =
>> +            [AVCaptureDeviceDiscoverySession
>> +            discoverySessionWithDeviceTypes:@[AVCaptureDeviceTypeBuiltInWideAngleCamera]
>> +                                  mediaType:mediaType
>> +                                   position:AVCaptureDevicePositionUnspecified];
>> +        return [captureDeviceDiscoverySession devices];
>> +    }
> 
>> +#endif
> 
> why not #else... #endif ?

#elif
... of course.

Also using it, would remove the deprication warning on capable systems. Otherwise it is still in the code and warned about.


>> +    // fallback
>> +    return [AVCaptureDevice devicesWithMediaType:mediaType];
>> +}
>> +
> 
> Thanks,
> Thilo

-Thilo

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