virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

lavfi/mandelbrot: fix speedloss with default config after morphing introduction.

Browse Source 
Morphing was introduced in 0d6e5a171 and forced cos/sin computations
with some mult all the time. This commit makes sure these are computed
only when morphing is enabled.
This commit is contained in:
Clément Bœsch 2013-04-08 10:19:11 +02:00
parent 1f2ce32825
commit 51bcd5cd65
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libavfilter/vsrc_mandelbrot.c
View File

@ -271,15 +271,17 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
for(x=0; x<mb->w; x++){
float av_uninit(epsilon);
const double cr=mb->start_x+scale*(x-mb->w/2);
double zr=cr + cos(pts * mb->morphxf) * mb->morphamp;
double zi=ci + sin(pts * mb->morphyf) * mb->morphamp;
double zr=cr;
double zi=ci;
uint32_t c=0;
double dv= mb->dither / (double)(1LL<<32);
mb->dither= mb->dither*1664525+1013904223;
if(color[x + y*linesize] & 0xFF000000)
continue;
if(!mb->morphamp && interpol(mb, color, x, y, linesize)){
if(!mb->morphamp){
if(interpol(mb, color, x, y, linesize)){
//TODO: reindent
if(next_cidx < mb->cache_allocated){
mb->next_cache[next_cidx ].p[0]= cr;
mb->next_cache[next_cidx ].p[1]= ci;
@ -287,6 +289,10 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
}
continue;
}
}else{
zr += cos(pts * mb->morphxf) * mb->morphamp;
zi += sin(pts * mb->morphyf) * mb->morphamp;
}
use_zyklus= (x==0 || mb->inner!=BLACK ||color[x-1 + y*linesize] == 0xFF000000);
if(use_zyklus)