codebook_decode()

static int32_t fl::third_party::vorbis::codebook_decode ( vorb * f, Codebook * c, float * output, int32_t len )

static

Definition at line 1523 of file stb_vorbis.cpp.hpp.

{
   int32_t i,z = codebook_decode_start(f,c);
   if (z < 0) return false;
   if (len > c->dimensions) len = c->dimensions;
 
#ifdef FL_STB_VORBIS_DIVIDES_IN_CODEBOOK
   if (c->lookup_type == 1) {
      float last = FL_STBV_CODEBOOK_ELEMENT_BASE(c);
      int32_t div = 1;
      for (i=0; i < len; ++i) {
         int32_t off = (z / div) % c->lookup_values;
         float val = FL_STBV_CODEBOOK_ELEMENT_FAST(c,off) + last;
         output[i] += val;
         if (c->sequence_p) last = val + c->minimum_value;
         div *= c->lookup_values;
      }
      return true;
   }
#endif
 
   z *= c->dimensions;
   if (c->sequence_p) {
      float last = FL_STBV_CODEBOOK_ELEMENT_BASE(c);
      for (i=0; i < len; ++i) {
         float val = FL_STBV_CODEBOOK_ELEMENT_FAST(c,z+i) + last;
         output[i] += val;
         last = val + c->minimum_value;
      }
   } else {
      float last = FL_STBV_CODEBOOK_ELEMENT_BASE(c);
      for (i=0; i < len; ++i) {
         output[i] += FL_STBV_CODEBOOK_ELEMENT_FAST(c,z+i) + last;
      }
   }
 
   return true;
}

References codebook_decode_start(), FL_NOEXCEPT, FL_STBV_CODEBOOK_ELEMENT_BASE, FL_STBV_CODEBOOK_ELEMENT_FAST, and z.

Referenced by residue_decode().

Here is the call graph for this function:

Here is the caller graph for this function: