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audiotestsrc

audiotestsrc — Creates audio test signals of given frequency and volume

Synopsis




            GstAudioTestSrc;
enum        GstAudioTestSrcWave;

Object Hierarchy


  GObject
   +----GstObject
         +----GstElement
               +----GstBaseSrc
                     +----GstAudioTestSrc

Properties


  "freq"                 gdouble               : Read / Write
  "is-live"              gboolean              : Read / Write
  "samplesperbuffer"     gint                  : Read / Write
  "timestamp-offset"     gint64                : Read / Write
  "volume"               gdouble               : Read / Write
  "wave"                 GstAudioTestSrcWave   : Read / Write

Description

Element Information

plugin audiotestsrc
authorStefan Kost <ensonic@users.sf.net>
classSource/Audio

Details

GstAudioTestSrc

typedef struct _GstAudioTestSrc GstAudioTestSrc;

audiotestsrc object structure.

enum GstAudioTestSrcWave

typedef enum {
  GST_AUDIO_TEST_SRC_WAVE_SINE,
  GST_AUDIO_TEST_SRC_WAVE_SQUARE,
  GST_AUDIO_TEST_SRC_WAVE_SAW,
  GST_AUDIO_TEST_SRC_WAVE_TRIANGLE,
  GST_AUDIO_TEST_SRC_WAVE_SILENCE,
  GST_AUDIO_TEST_SRC_WAVE_WHITE_NOISE,
  GST_AUDIO_TEST_SRC_WAVE_PINK_NOISE,
  GST_AUDIO_TEST_SRC_WAVE_SINE_TAB
} GstAudioTestSrcWave;

Different types of supported sound waves.

GST_AUDIO_TEST_SRC_WAVE_SINE a sine wave
GST_AUDIO_TEST_SRC_WAVE_SQUARE a square wave
GST_AUDIO_TEST_SRC_WAVE_SAW a saw wave
GST_AUDIO_TEST_SRC_WAVE_TRIANGLE a tringle wave
GST_AUDIO_TEST_SRC_WAVE_SILENCE silence
GST_AUDIO_TEST_SRC_WAVE_WHITE_NOISE white noise
GST_AUDIO_TEST_SRC_WAVE_PINK_NOISE pink noise
GST_AUDIO_TEST_SRC_WAVE_SINE_TAB sine wave using a table

Properties

The "freq" property

  "freq"                 gdouble               : Read / Write

Frequency of test signal.

Allowed values: [0,20000]

Default value: 440

The "is-live" property

  "is-live"              gboolean              : Read / Write

Whether to act as a live source.

Default value: FALSE

The "samplesperbuffer" property

  "samplesperbuffer"     gint                  : Read / Write

Number of samples in each outgoing buffer.

Allowed values: >= 1

Default value: 1024

The "timestamp-offset" property

  "timestamp-offset"     gint64                : Read / Write

An offset added to timestamps set on buffers (in ns).

Default value: 0

The "volume" property

  "volume"               gdouble               : Read / Write

Volume of test signal.

Allowed values: [0,1]

Default value: 0.8

The "wave" property

  "wave"                 GstAudioTestSrcWave   : Read / Write

Oscillator waveform.

Default value: Sine

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