compute_samples()

static void fl::third_party::vorbis::compute_samples ( int32_t mask, short * output, int32_t num_c, float ** data, int32_t d_offset, int32_t len )

static

Definition at line 4945 of file stb_vorbis.cpp.hpp.

{
   constexpr int32_t STB_BUFFER_SIZE = 32;
   float buffer[STB_BUFFER_SIZE];
   int32_t i,j,o,n = STB_BUFFER_SIZE;
   fl_stbv_check_endianness();
   for (o = 0; o < len; o += STB_BUFFER_SIZE) {
      memset(buffer, 0, sizeof(buffer));
      if (o + n > len) n = len - o;
      for (j=0; j < num_c; ++j) {
         if (channel_position[num_c][j] & mask) {
            for (i=0; i < n; ++i)
               buffer[i] += data[j][d_offset+o+i];
         }
      }
      for (i=0; i < n; ++i) {
         FL_STBV_FASTDEF(temp);
         int32_t v = FL_STBV_FAST_SCALED_FLOAT_TO_INT(temp,buffer[i],15);
         if ((uint32_t) (v + 32768) > 65535)
            v = v < 0 ? -32768 : 32767;
         output[o+i] = v;
      }
   }
}

References channel_position, FL_NOEXCEPT, fl_stbv_check_endianness, FL_STBV_FAST_SCALED_FLOAT_TO_INT, FL_STBV_FASTDEF, and memset().

Referenced by convert_samples_short().

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