Linking with FFmpeg

[MrOrdinaire]

On Sunday, 6 January 2013 at 10:21:56 UTC, bearophile wrote:
> MrOrdinaire:
>
>> My question is how this function declaration is written in D.
>> int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
>>                   int w, int h, enum AVPixelFormat pix_fmt, 
>> int align);
>>
>> My best guess is the following.
>> extern(C) int av_image_alloc(ref uint8_t[4] *pointers, ref 
>> int[4] linesizes,
>>                             int w, int h, AVPixelFormat 
>> pix_fmt, int align_);
>
> D ints are 32 bit long, while the length of C ints varies 
> across different architectures. So you can't use int in your D 
> signature. sizediff_t is better, but I remember there is a more 
> specific type for this purpose, something like cint_t, I don't 
> remember.
>
> In D the pointer symbol "*" is better (more meaningful) written 
> justified on the right.
>
> If you use a D ref, you can't put a null there.
>
> Others will give you a better answer.
>
> Bye,
> bearophile

Thank you for your reply.

I cannot find "cint_t" nor "cint" in the d standard modules (mine 
are at /usr/include/d/).

For the symbol "*", do you mean I should write something like 
this?
uint8_t[4]* ptrs

- Minh