[FFmpeg-devel] [PATCH v4 3/5] avutil: add obj-c helpers into header-only include

[James Almer]

On 12/17/2021 5:04 PM, Aman Karmani wrote:
> From: Aman Karmani <aman at tmm1.net>
> 
> Reviewed-by: Ridley Combs <rcombs at rcombs.me>
> Signed-off-by: Aman Karmani <aman at tmm1.net>
> ---
>   libavutil/objc.h | 32 ++++++++++++++++++++++++++++++++
>   1 file changed, 32 insertions(+)
>   create mode 100644 libavutil/objc.h
> 
> diff --git a/libavutil/objc.h b/libavutil/objc.h
> new file mode 100644
> index 0000000000..0db993f716
> --- /dev/null
> +++ b/libavutil/objc.h
> @@ -0,0 +1,32 @@
> +/*
> + * This file is part of FFmpeg.
> + *
> + * FFmpeg is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * FFmpeg is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with FFmpeg; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +#ifndef AVUTIL_OBJC_H
> +#define AVUTIL_OBJC_H
> +
> +#include <Foundation/Foundation.h>
> +
> +static inline void ff_objc_release(NSObject **obj)
> +{
> +    if (*obj) {
> +        [*obj release];
> +        *obj = nil;
> +    }
> +}
> +
> +#endif /* AVUTIL_OBJC_H */

This breaks checkheaders. It should be added to SKIPHEADERS with the 
corresponding check.

Also, why is this in lavu if it's ultimately only used in lavfi? And 
does it need to be a separate header at all? It's apparently not even C.