do_floor()

static int32_t fl::third_party::vorbis::do_floor ( vorb * f, Mapping * map, int32_t i, int32_t n, float * target, YTYPE * finalY, uint8 * step2_flag )

static

Definition at line 2802 of file stb_vorbis.cpp.hpp.

{
   int32_t n2 = n >> 1;
   int32_t s = map->chan[i].mux, floor;
   floor = map->submap_floor[s];
   if (f->floor_types[floor] == 0) {
      return error(f, VORBIS_invalid_stream);
   } else {
      Floor1 *g = &f->floor_config[floor].floor1;
      int32_t j,q;
      int32_t lx = 0, ly = finalY[0] * g->floor1_multiplier;
      for (q=1; q < g->values; ++q) {
         j = g->sorted_order[q];
         #ifndef FL_STB_VORBIS_NO_DEFER_FLOOR
         FL_UNUSED(step2_flag);
         if (finalY[j] >= 0)
         #else
         if (step2_flag[j])
         #endif
         {
            int32_t hy = finalY[j] * g->floor1_multiplier;
            int32_t hx = g->Xlist[j];
            if (lx != hx)
               draw_line(target, lx,ly, hx,hy, n2);
            FL_STBV_CHECK(f);
            lx = hx, ly = hy;
         }
      }
      if (lx < n2) {
         // optimization of: draw_line(target, lx,ly, n,ly, n2);
         for (j=lx; j < n2; ++j)
            FL_STBV_LINE_OP(target[j], inverse_db_table[ly]);
         FL_STBV_CHECK(f);
      }
   }
   return true;
}

References draw_line(), error(), fl::FL_NO_EXCEPT, FL_STBV_CHECK, FL_STBV_LINE_OP, FL_UNUSED, floor(), fl::g, inverse_db_table, and VORBIS_invalid_stream.

Referenced by vorbis_decode_packet_rest().

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