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https://git.ffmpeg.org/ffmpeg.git
synced 2025-01-11 18:09:36 +00:00
avfilter/vsrc_mandelbrot: use the name 's' for the pointer to the private context
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
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39c61d8459
commit
d13a2df8de
@ -121,29 +121,29 @@ AVFILTER_DEFINE_CLASS(mandelbrot);
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static av_cold int init(AVFilterContext *ctx)
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{
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MBContext *mb = ctx->priv;
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MBContext *s = ctx->priv;
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mb->bailout *= mb->bailout;
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s->bailout *= s->bailout;
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mb->start_scale /=mb->h;
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mb->end_scale /=mb->h;
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s->start_scale /=s->h;
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s->end_scale /=s->h;
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mb->cache_allocated = mb->w * mb->h * 3;
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mb->cache_used = 0;
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mb->point_cache= av_malloc_array(mb->cache_allocated, sizeof(*mb->point_cache));
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mb-> next_cache= av_malloc_array(mb->cache_allocated, sizeof(*mb-> next_cache));
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mb-> zyklus = av_malloc_array(mb->maxiter + 16, sizeof(*mb->zyklus));
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s->cache_allocated = s->w * s->h * 3;
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s->cache_used = 0;
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s->point_cache= av_malloc_array(s->cache_allocated, sizeof(*s->point_cache));
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s-> next_cache= av_malloc_array(s->cache_allocated, sizeof(*s-> next_cache));
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s-> zyklus = av_malloc_array(s->maxiter + 16, sizeof(*s->zyklus));
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return 0;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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MBContext *mb = ctx->priv;
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MBContext *s = ctx->priv;
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av_freep(&mb->point_cache);
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av_freep(&mb-> next_cache);
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av_freep(&mb->zyklus);
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av_freep(&s->point_cache);
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av_freep(&s-> next_cache);
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av_freep(&s->zyklus);
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}
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static int query_formats(AVFilterContext *ctx)
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@ -162,48 +162,48 @@ static int query_formats(AVFilterContext *ctx)
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static int config_props(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->src;
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MBContext *mb = ctx->priv;
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MBContext *s = ctx->priv;
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if (av_image_check_size(mb->w, mb->h, 0, ctx) < 0)
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if (av_image_check_size(s->w, s->h, 0, ctx) < 0)
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return AVERROR(EINVAL);
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inlink->w = mb->w;
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inlink->h = mb->h;
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inlink->time_base = av_inv_q(mb->frame_rate);
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inlink->w = s->w;
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inlink->h = s->h;
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inlink->time_base = av_inv_q(s->frame_rate);
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return 0;
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}
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static void fill_from_cache(AVFilterContext *ctx, uint32_t *color, int *in_cidx, int *out_cidx, double py, double scale){
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MBContext *mb = ctx->priv;
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if(mb->morphamp)
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MBContext *s = ctx->priv;
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if(s->morphamp)
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return;
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for(; *in_cidx < mb->cache_used; (*in_cidx)++){
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Point *p= &mb->point_cache[*in_cidx];
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for(; *in_cidx < s->cache_used; (*in_cidx)++){
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Point *p= &s->point_cache[*in_cidx];
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int x;
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if(p->p[1] > py)
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break;
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x= round((p->p[0] - mb->start_x) / scale + mb->w/2);
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if(x<0 || x >= mb->w)
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x= round((p->p[0] - s->start_x) / scale + s->w/2);
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if(x<0 || x >= s->w)
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continue;
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if(color) color[x] = p->val;
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if(out_cidx && *out_cidx < mb->cache_allocated)
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mb->next_cache[(*out_cidx)++]= *p;
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if(out_cidx && *out_cidx < s->cache_allocated)
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s->next_cache[(*out_cidx)++]= *p;
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}
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}
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static int interpol(MBContext *mb, uint32_t *color, int x, int y, int linesize)
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static int interpol(MBContext *s, uint32_t *color, int x, int y, int linesize)
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{
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uint32_t a,b,c,d, i;
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uint32_t ipol=0xFF000000;
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int dist;
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if(!x || !y || x+1==mb->w || y+1==mb->h)
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if(!x || !y || x+1==s->w || y+1==s->h)
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return 0;
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dist= FFMAX(FFABS(x-(mb->w>>1))*mb->h, FFABS(y-(mb->h>>1))*mb->w);
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dist= FFMAX(FFABS(x-(s->w>>1))*s->h, FFABS(y-(s->h>>1))*s->w);
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if(dist<(mb->w*mb->h>>3))
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if(dist<(s->w*s->h>>3))
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return 0;
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a=color[(x+1) + (y+0)*linesize];
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@ -248,50 +248,50 @@ static int interpol(MBContext *mb, uint32_t *color, int x, int y, int linesize)
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static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize, int64_t pts)
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{
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MBContext *mb = ctx->priv;
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MBContext *s = ctx->priv;
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int x,y,i, in_cidx=0, next_cidx=0, tmp_cidx;
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double scale= mb->start_scale*pow(mb->end_scale/mb->start_scale, pts/mb->end_pts);
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double scale= s->start_scale*pow(s->end_scale/s->start_scale, pts/s->end_pts);
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int use_zyklus=0;
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fill_from_cache(ctx, NULL, &in_cidx, NULL, mb->start_y+scale*(-mb->h/2-0.5), scale);
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fill_from_cache(ctx, NULL, &in_cidx, NULL, s->start_y+scale*(-s->h/2-0.5), scale);
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tmp_cidx= in_cidx;
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memset(color, 0, sizeof(*color)*mb->w);
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for(y=0; y<mb->h; y++){
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memset(color, 0, sizeof(*color)*s->w);
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for(y=0; y<s->h; y++){
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int y1= y+1;
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const double ci=mb->start_y+scale*(y-mb->h/2);
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const double ci=s->start_y+scale*(y-s->h/2);
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fill_from_cache(ctx, NULL, &in_cidx, &next_cidx, ci, scale);
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if(y1<mb->h){
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memset(color+linesize*y1, 0, sizeof(*color)*mb->w);
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if(y1<s->h){
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memset(color+linesize*y1, 0, sizeof(*color)*s->w);
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fill_from_cache(ctx, color+linesize*y1, &tmp_cidx, NULL, ci + 3*scale/2, scale);
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}
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for(x=0; x<mb->w; x++){
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for(x=0; x<s->w; x++){
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float av_uninit(epsilon);
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const double cr=mb->start_x+scale*(x-mb->w/2);
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const double cr=s->start_x+scale*(x-s->w/2);
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double zr=cr;
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double zi=ci;
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uint32_t c=0;
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double dv= mb->dither / (double)(1LL<<32);
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mb->dither= mb->dither*1664525+1013904223;
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double dv= s->dither / (double)(1LL<<32);
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s->dither= s->dither*1664525+1013904223;
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if(color[x + y*linesize] & 0xFF000000)
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continue;
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if(!mb->morphamp){
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if(interpol(mb, color, x, y, linesize)){
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if(next_cidx < mb->cache_allocated){
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mb->next_cache[next_cidx ].p[0]= cr;
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mb->next_cache[next_cidx ].p[1]= ci;
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mb->next_cache[next_cidx++].val = color[x + y*linesize];
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if(!s->morphamp){
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if(interpol(s, color, x, y, linesize)){
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if(next_cidx < s->cache_allocated){
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s->next_cache[next_cidx ].p[0]= cr;
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s->next_cache[next_cidx ].p[1]= ci;
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s->next_cache[next_cidx++].val = color[x + y*linesize];
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}
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continue;
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}
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}else{
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zr += cos(pts * mb->morphxf) * mb->morphamp;
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zi += sin(pts * mb->morphyf) * mb->morphamp;
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zr += cos(pts * s->morphxf) * s->morphamp;
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zi += sin(pts * s->morphyf) * s->morphamp;
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}
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use_zyklus= (x==0 || mb->inner!=BLACK ||color[x-1 + y*linesize] == 0xFF000000);
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use_zyklus= (x==0 || s->inner!=BLACK ||color[x-1 + y*linesize] == 0xFF000000);
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if(use_zyklus)
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epsilon= scale*1*sqrt(SQR(x-mb->w/2) + SQR(y-mb->h/2))/mb->w;
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epsilon= scale*1*sqrt(SQR(x-s->w/2) + SQR(y-s->h/2))/s->w;
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#define Z_Z2_C(outr,outi,inr,ini)\
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outr= inr*inr - ini*ini + cr;\
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@ -300,15 +300,15 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
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#define Z_Z2_C_ZYKLUS(outr,outi,inr,ini, Z)\
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Z_Z2_C(outr,outi,inr,ini)\
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if(use_zyklus){\
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if(Z && fabs(mb->zyklus[i>>1][0]-outr)+fabs(mb->zyklus[i>>1][1]-outi) <= epsilon)\
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if(Z && fabs(s->zyklus[i>>1][0]-outr)+fabs(s->zyklus[i>>1][1]-outi) <= epsilon)\
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break;\
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}\
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mb->zyklus[i][0]= outr;\
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mb->zyklus[i][1]= outi;\
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s->zyklus[i][0]= outr;\
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s->zyklus[i][1]= outi;\
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for(i=0; i<mb->maxiter-8; i++){
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for(i=0; i<s->maxiter-8; i++){
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double t;
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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@ -325,27 +325,27 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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if(zr*zr + zi*zi > mb->bailout){
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if(zr*zr + zi*zi > s->bailout){
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i-= FFMIN(7, i);
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for(; i<mb->maxiter; i++){
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zr= mb->zyklus[i][0];
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zi= mb->zyklus[i][1];
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if(zr*zr + zi*zi > mb->bailout){
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switch(mb->outer){
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for(; i<s->maxiter; i++){
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zr= s->zyklus[i][0];
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zi= s->zyklus[i][1];
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if(zr*zr + zi*zi > s->bailout){
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switch(s->outer){
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case ITERATION_COUNT:
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zr = i;
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c = lrintf((sin(zr)+1)*127) + lrintf((sin(zr/1.234)+1)*127)*256*256 + lrintf((sin(zr/100)+1)*127)*256;
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break;
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case NORMALIZED_ITERATION_COUNT:
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zr = i + log2(log(mb->bailout) / log(zr*zr + zi*zi));
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zr = i + log2(log(s->bailout) / log(zr*zr + zi*zi));
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c = lrintf((sin(zr)+1)*127) + lrintf((sin(zr/1.234)+1)*127)*256*256 + lrintf((sin(zr/100)+1)*127)*256;
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break;
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case WHITE:
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c = 0xFFFFFF;
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break;
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case OUTZ:
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zr /= mb->bailout;
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zi /= mb->bailout;
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zr /= s->bailout;
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zi /= s->bailout;
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c = (((int)(zr*128+128))&0xFF)*256 + (((int)(zi*128+128))&0xFF);
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}
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break;
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@ -355,55 +355,55 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
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}
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}
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if(!c){
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if(mb->inner==PERIOD){
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if(s->inner==PERIOD){
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int j;
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for(j=i-1; j; j--)
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if(SQR(mb->zyklus[j][0]-zr) + SQR(mb->zyklus[j][1]-zi) < epsilon*epsilon*10)
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if(SQR(s->zyklus[j][0]-zr) + SQR(s->zyklus[j][1]-zi) < epsilon*epsilon*10)
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break;
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if(j){
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c= i-j;
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c= ((c<<5)&0xE0) + ((c<<10)&0xE000) + ((c<<15)&0xE00000);
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}
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}else if(mb->inner==CONVTIME){
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c= floor(i*255.0/mb->maxiter+dv)*0x010101;
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} else if(mb->inner==MINCOL){
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}else if(s->inner==CONVTIME){
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c= floor(i*255.0/s->maxiter+dv)*0x010101;
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} else if(s->inner==MINCOL){
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int j;
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double closest=9999;
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int closest_index=0;
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for(j=i-1; j>=0; j--)
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if(SQR(mb->zyklus[j][0]) + SQR(mb->zyklus[j][1]) < closest){
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closest= SQR(mb->zyklus[j][0]) + SQR(mb->zyklus[j][1]);
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if(SQR(s->zyklus[j][0]) + SQR(s->zyklus[j][1]) < closest){
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closest= SQR(s->zyklus[j][0]) + SQR(s->zyklus[j][1]);
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closest_index= j;
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}
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closest = sqrt(closest);
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c= lrintf((mb->zyklus[closest_index][0]/closest+1)*127+dv) + lrintf((mb->zyklus[closest_index][1]/closest+1)*127+dv)*256;
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c= lrintf((s->zyklus[closest_index][0]/closest+1)*127+dv) + lrintf((s->zyklus[closest_index][1]/closest+1)*127+dv)*256;
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}
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}
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c |= 0xFF000000;
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color[x + y*linesize]= c;
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if(next_cidx < mb->cache_allocated){
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mb->next_cache[next_cidx ].p[0]= cr;
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mb->next_cache[next_cidx ].p[1]= ci;
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mb->next_cache[next_cidx++].val = c;
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if(next_cidx < s->cache_allocated){
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s->next_cache[next_cidx ].p[0]= cr;
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s->next_cache[next_cidx ].p[1]= ci;
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s->next_cache[next_cidx++].val = c;
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}
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}
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fill_from_cache(ctx, NULL, &in_cidx, &next_cidx, ci + scale/2, scale);
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}
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FFSWAP(void*, mb->next_cache, mb->point_cache);
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mb->cache_used = next_cidx;
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if(mb->cache_used == mb->cache_allocated)
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FFSWAP(void*, s->next_cache, s->point_cache);
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s->cache_used = next_cidx;
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if(s->cache_used == s->cache_allocated)
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av_log(ctx, AV_LOG_INFO, "Mandelbrot cache is too small!\n");
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}
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static int request_frame(AVFilterLink *link)
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{
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MBContext *mb = link->src->priv;
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AVFrame *picref = ff_get_video_buffer(link, mb->w, mb->h);
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MBContext *s = link->src->priv;
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AVFrame *picref = ff_get_video_buffer(link, s->w, s->h);
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if (!picref)
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return AVERROR(ENOMEM);
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picref->sample_aspect_ratio = (AVRational) {1, 1};
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picref->pts = mb->pts++;
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picref->pts = s->pts++;
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draw_mandelbrot(link->src, (uint32_t*)picref->data[0], picref->linesize[0]/4, picref->pts);
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return ff_filter_frame(link, picref);
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