[FFmpeg-devel] a64 encoder 6th round

[Bitbreaker/METALVOTZE]

Fixed all alignment issues found by Diego, updates Changelog and 
documentation.
 
> these could be set to FFMIN(width, C64XRES) ... i think
>
>   
done so.
> *dest++ = ...
>
>   
I did forgo on that, as there was a bug anyway when scaling video below 
C64XRES. Fixed that.
>
>> +                row1 <<= 2;
>> +                if (prep_dither_patterns[dither][y & 3][x & 3])
>> +                    row1 |= vals[index2];
>> +                else
>> +                    row1 |= vals[index1];
>> +            }
>> +            charset[y] = row1;
>>     
>
> could be simplified slightly with put_bits()
>   
Unfortunatedly this didn't work out and trashes the charset when i do 
so. I guess because i redo certain chars in 5col mode. I could of course 
split things up into another loop for calculating the error first and 
adjusting pixels and a loop for rendering a charset line. But maybe that 
bloats up things more than it helps?

Kindest regards,

Toby
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