关于libmad中的synth_frame（）

xxx7597

mdk+lpc23XX的环境

这是涉及的源码
void mad_synth_frame(struct mad_synth *synth, struct mad_frame const *frame)
{
  unsigned int nch, ns;
  void (*synth_frame)(struct mad_synth *, struct mad_frame const *,
                      unsigned int, unsigned int);

  nch = MAD_NCHANNELS(&frame->header);
  ns  = MAD_NSBSAMPLES(&frame->header);

  synth->pcm.samplerate = frame->header.samplerate;
  synth->pcm.channels   = nch;
  synth->pcm.length     = 32 * ns;

  synth_frame = synth_full;

  if (frame->options & MAD_OPTION_HALFSAMPLERATE) {
    synth->pcm.samplerate /= 2;
    synth->pcm.length     /= 2;

    synth_frame = synth_half;
  }

  synth_frame(synth, frame, nch, ns);

  synth->phase = (synth->phase + ns) % 16;
}

在synth.c中
程序跑到这就停止了  停止在DAbt_Handler    B       DAbt_Handler