C++ (Cpp) synth_frame Examples

Example #1

File: synth.c Project: dnwang/android_demo

/*
 * NAME:	synth->frame()
 * DESCRIPTION:	perform PCM synthesis of frame subband samples
 */
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;
}

Example #2

File: synth.c Project: KYHuang/arm-mp3-player

//extern unsigned char set__;
void mad_synth_frame(struct mad_synth *synth, struct mad_frame /*const*/ *frame)
{
  unsigned int nch, ns;
  static int samplerate=0;
  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;
  
  //--set_dac_sample_rate(synth->pcm.samplerate);
  //while(g_ulFlags!=7);
  
  //if(set__)
  {
    vPortEnterCritical( );
    SoundSetFormat(frame->header.samplerate,16,1);
    //set__=0;
    vPortExitCritical( );
  }
  
  synth->pcm.channels   = nch;
  synth->pcm.length     = 32 * ns;
  samplerate = synth->pcm.samplerate;

  synth_frame = synth_full;

  if (frame->options & MAD_OPTION_HALFSAMPLERATE) {
    synth->pcm.samplerate /= 2;
    synth->pcm.length     /= 2;
    //--set_dac_sample_rate(synth->pcm.samplerate);
    vPortEnterCritical( );
    SoundSetFormat(frame->header.samplerate,16,1);
    vPortExitCritical( );
    synth_frame = synth_half;
  }

  synth_frame(synth, frame, nch, ns);
  synth->phase = (synth->phase + ns) % 16;
}