Displaying Meters

Sample directory

/cri/pc/samples/criatomex/display_meter

Data used in the sample

/cri/common/smpdata/criatomex/

• SampleProject.acf
• AtomCueSheet.avb
• AtomCueSheet.awb
  

Sample description

The Atom library has the following meter functions, each of which measures the output audio.

• Level meter (Peak / RMS)
• Loudness meter
• True peak meter

CriAtomLevelInfo level_info;
CriAtomLoudnessInfo loudness_info;
CriAtomTruePeakInfo truepeak_info;
 
/* Add level meter function */
criAtomMeter_AttachLevelMeter(NULL, NULL, 0);
/* Add loudness meter function */
criAtomMeter_AttachLoudnessMeter(NULL, NULL, 0);
/* Add true peak meter function */
criAtomMeter_AttachTruePeakMeter(NULL, NULL, 0);
 
for(;;) {
    /* Wait for V-sync */
    criFwSys_WaitVsync();
    /* Execute server processing */
    criAtomEx_ExecuteMain();
 
    /* Acquire level measurement results */
    criAtomMeter_GetLevelInfo(&level_info);
    /* Acquire loudness measurement results */
    criAtomMeter_GetLoudnessInfo(&loudness_info);
    /* Acquire true peak measurement results */
    criAtomMeter_GetTruePeakInfo(&truepeak_info);
}
 
/* Destroy meter functions */
criAtomMeter_DetachTruePeakMeter();
criAtomMeter_DetachLoudnessMeter();
criAtomMeter_DetachLevelMeter();

For a detailed explanation about these meters, click here.