Diego Biurrun <[email protected]> writes:

> On Sat, Jul 09, 2011 at 11:45:11AM +0100, Mans Rullgard wrote:
>> --- a/libavcodec/bit_depth_template.c
>> +++ b/libavcodec/bit_depth_template.c
>> @@ -85,13 +85,7 @@
>>  
>> -#if BIT_DEPTH == 8
>> -#   define FUNC(a)  a ## _8
>> -#   define FUNCC(a) a ## _8_c
>> -#elif BIT_DEPTH == 9
>> -#   define FUNC(a)  a ## _9
>> -#   define FUNCC(a) a ## _9_c
>> -#elif BIT_DEPTH == 10
>> -#   define FUNC(a)  a ## _10
>> -#   define FUNCC(a) a ## _10_c
>> -#endif
>> +#define FUNC3(a, b, c)  a ## _ ## b ## c
>> +#define FUNC2(a, b, c)  FUNC3(a, b, c)
>> +#define FUNC(a)  FUNC2(a, BIT_DEPTH,)
>> +#define FUNCC(a) FUNC2(a, BIT_DEPTH, _c)
>
> I'm puzzled why you need FUNC3 and FUNC2 both here.

It's needed to expand BIT_DEPTH all the way.  Otherwise you get
foo_BIT_DEPTH instead of foo_8.

-- 
Måns Rullgård
[email protected]
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