I finally got it ... The explanation is in h264dsp_template.c (big bunch of
macro, yummy !)
________________________________________
De : ffmpeg-devel-boun...@ffmpeg.org <ffmpeg-devel-boun...@ffmpeg.org> de la
part de Nicolas Derouineau <nicolas.derouin...@vitec.com>
Envoyé : lundi 1 septembre 2014 17:22
À : ffmpeg-devel@ffmpeg.org
Objet : [FFmpeg-devel] Filter_mb_edge
Hello,
I would like to understand the prototype of this function:
filter_mb_edgeh(uint8_t *pix, int stride,
const int16_t bS[4],
unsigned int qp, int a, int b,
H264Context *h, int intra)
Let's say I want to check the filtering condition on p0,1,2 and q0,1,2 . How am
I supposed to read the pix buffer to get them ?
Correct me if I'm wrong:
On a 16x16 macroblock, considering abcd are the vertical boundaries, and efgh
are the horizontal one:
/* Filtering a */
filter_mb_edgev( &img_y[4*0<<pixel_shift], linesize, bS3, qp, a, b, h, 0);
/* Filtering b */
filter_mb_edgev( &img_y[4*1<<pixel_shift], linesize, bS3, qp, a, b, h, 0);
/* Filtering c */
filter_mb_edgev( &img_y[4*2<<pixel_shift], linesize, bS3, qp, a, b, h, 0);
I guess img_y[0], img_y[stride] gives p0, p1, but how am I supposed to get q0
and q1 ?
Regards,
Nicolas DEROUINEAU
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