static int resampler_basic_zero()

in subprojects/speex/resample.c [565:590]

• 24 lines of code
• 4 McCabe index (conditional complexity)

static int resampler_basic_zero(SpeexResamplerState *st, spx_uint32_t channel_index, const spx_word16_t *in, spx_uint32_t *in_len, spx_word16_t *out, spx_uint32_t *out_len)
{
   int out_sample = 0;
   int last_sample = st->last_sample[channel_index];
   spx_uint32_t samp_frac_num = st->samp_frac_num[channel_index];
   const int out_stride = st->out_stride;
   const int int_advance = st->int_advance;
   const int frac_advance = st->frac_advance;
   const spx_uint32_t den_rate = st->den_rate;

   while (!(last_sample >= (spx_int32_t)*in_len || out_sample >= (spx_int32_t)*out_len))
   {
      out[out_stride * out_sample++] = 0;
      last_sample += int_advance;
      samp_frac_num += frac_advance;
      if (samp_frac_num >= den_rate)
      {
         samp_frac_num -= den_rate;
         last_sample++;
      }
   }

   st->last_sample[channel_index] = last_sample;
   st->samp_frac_num[channel_index] = samp_frac_num;
   return out_sample;
}