- hx=0;
- lx=0;
- ly=floor1_Y_final[0]*vf->multiplier; // conforms to SPEC
-
- vec[0]=ff_vorbis_floor1_inverse_db_table[ly];
-
- for(i=1;i<vf->x_list_dim;++i) {
- AV_DEBUG(" Looking at post %d \n", i);
-
- if (floor1_flag[vf->list[i].sort]) { // SPEC mispelled
- int_fast16_t x, y, dy, base, sy; // if uncommented: dy = -32 adx = 2 base = 2blablabla ?????
-
- hy=floor1_Y_final[vf->list[i].sort]*vf->multiplier;
- hx=vf->list[vf->list[i].sort].x;
-
- dy=hy-ly;
- adx=hx-lx;
- ady= (dy<0) ? -dy:dy;//ABS(dy);
- base=(int16_t)dy/(int16_t)adx;
-
- AV_DEBUG(" dy %d adx %d base %d = %d \n", dy, adx, base, dy/adx);
-
- x=lx;
- y=ly;
- err=0;
- if (dy<0) {
- sy=base-1;
- } else {
- sy=base+1;
- }
- ady=ady-(base<0 ? -base : base)*adx;
- vec[x]=ff_vorbis_floor1_inverse_db_table[y];
-
- AV_DEBUG(" vec[ %d ] = %d \n", x, y);
-
- for(x=lx+1;(x<hx) && (x<vf->list[1].x);++x) {
- err+=ady;
- if (err>=adx) {
- err-=adx;
- y+=sy;
- } else {
- y+=base;
- }
- vec[x]=ff_vorbis_floor1_inverse_db_table[y];
-
- AV_DEBUG(" vec[ %d ] = %d \n", x, y);
- }
-
-/* for(j=1;j<hx-lx+1;++j) { // iterating render_point
- dy=hy-ly;
- adx=hx-lx;
- ady= dy<0 ? -dy : dy;
- err=ady*j;
- off=err/adx;
- if (dy<0) {
- predicted=ly-off;
- } else {
- predicted=ly+off;
- }
- if (lx+j < vf->x_list[1]) {
- vec[lx+j]=ff_vorbis_floor1_inverse_db_table[predicted];
- }
- }*/
-
- lx=hx;
- ly=hy;
- }
- }
-
- if (hx<vf->list[1].x) {
- for(i=hx;i<vf->list[1].x;++i) {
- vec[i]=ff_vorbis_floor1_inverse_db_table[hy];
- }
- }