EXPORT int speex_resampler_process_int()

in subprojects/speex/resample.c [925:963]

• 37 lines of code
• 11 McCabe index (conditional complexity)

EXPORT int speex_resampler_process_int(SpeexResamplerState *st, spx_uint32_t channel_index, const spx_int16_t *in, spx_uint32_t *in_len, spx_int16_t *out, spx_uint32_t *out_len)
#else
EXPORT int speex_resampler_process_float(SpeexResamplerState *st, spx_uint32_t channel_index, const float *in, spx_uint32_t *in_len, float *out, spx_uint32_t *out_len)
#endif
{
   int j;
   spx_uint32_t ilen = *in_len;
   spx_uint32_t olen = *out_len;
   spx_word16_t *x = st->mem + channel_index * st->mem_alloc_size;
   const int filt_offs = st->filt_len - 1;
   const spx_uint32_t xlen = st->mem_alloc_size - filt_offs;
   const int istride = st->in_stride;

   if (st->magic_samples[channel_index])
      olen -= speex_resampler_magic(st, channel_index, &out, olen);
   if (! st->magic_samples[channel_index]) {
      while (ilen && olen) {
        spx_uint32_t ichunk = (ilen > xlen) ? xlen : ilen;
        spx_uint32_t ochunk = olen;

        if (in) {
           for(j=0;j<ichunk;++j)
              x[j+filt_offs]=in[j*istride];
        } else {
          for(j=0;j<ichunk;++j)
            x[j+filt_offs]=0;
        }
        speex_resampler_process_native(st, channel_index, &ichunk, out, &ochunk);
        ilen -= ichunk;
        olen -= ochunk;
        out += ochunk * st->out_stride;
        if (in)
           in += ichunk * istride;
      }
   }
   *in_len -= ilen;
   *out_len -= olen;
   return st->resampler_ptr == resampler_basic_zero ? RESAMPLER_ERR_ALLOC_FAILED : RESAMPLER_ERR_SUCCESS;
}