[FFmpeg-soc] [soc]: r1773 - in libavfilter: Makefile allfilters.h avfilter.c vf_rot90.c

[Vitor Sessak]

Hi

Michael Niedermayer wrote:
> On Sun, Jan 06, 2008 at 02:19:12PM +0100, vitor wrote:
>> Author: vitor
>> Date: Sun Jan  6 14:19:12 2008
>> New Revision: 1773
>>
>> Log:
>> 90 degrees counter-clockwise rotation filter
> 
> [...]
> 
>> +static void draw_slice(AVFilterLink *link, int y, int h)
>> +{
>> +    RotContext *rot = link->dst->priv;
>> +    AVFilterPicRef *in  = link->cur_pic;
>> +    AVFilterPicRef *out = link->dst->outputs[0]->outpic;
>> +    int i, j, plane;
>> +
>> +    /* luma plane */
>> +    for(i = y; i < h; i ++)
>> +        for(j = 0; j < link->w; j ++)
>> +            *(out->data[0] +   j *out->linesize[0] + i) =
>> +                *(in->data[0]+ i * in->linesize[0] + j);
> 
> this looks more like transpose, that is
> A   B       A   C
>         ->
> C   D       B   D
> 
> instead of 90° ccw rotate:
> 
> A   B       B   D
>         ->
> C   D       A   C

Agreed, renamed.

-Vitor