diff -r 9b2c3c7a1a9c -r 567bb019e3e3 gst_plugins_base/gst/audiotestsrc/gstaudiotestsrc.h
--- a/gst_plugins_base/gst/audiotestsrc/gstaudiotestsrc.h	Wed Mar 31 22:03:18 2010 +0300
+++ b/gst_plugins_base/gst/audiotestsrc/gstaudiotestsrc.h	Tue Aug 31 15:30:33 2010 +0300
@@ -45,9 +45,11 @@
  * @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_WHITE_NOISE: white uniform noise
  * @GST_AUDIO_TEST_SRC_WAVE_PINK_NOISE: pink noise
  * @GST_AUDIO_TEST_SRC_WAVE_SINE_TAB: sine wave using a table
+ * @GST_AUDIO_TEST_SRC_WAVE_TICKS: periodic ticks
+ * @GST_AUDIO_TEST_SRC_WAVE_GAUSSIAN_WHITE_NOISE: white (zero mean) Gaussian noise;  volume sets the standard deviation of the noise in units of the range of values of the sample type, e.g. volume=0.1 produces noise with a standard deviation of 0.1*32767=3277 with 16-bit integer samples, or 0.1*1.0=0.1 with floating-point samples.
  *
  * Different types of supported sound waves.
  */
@@ -59,7 +61,9 @@
   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
+  GST_AUDIO_TEST_SRC_WAVE_SINE_TAB,
+  GST_AUDIO_TEST_SRC_WAVE_TICKS,
+  GST_AUDIO_TEST_SRC_WAVE_GAUSSIAN_WHITE_NOISE
 } GstAudioTestSrcWave; 
 
 #define PINK_MAX_RANDOM_ROWS   (30)
@@ -103,19 +107,23 @@
   gdouble freq;
     
   /* audio parameters */
+  gint channels;
   gint samplerate;
   gint samples_per_buffer;
+  gint sample_size;
   GstAudioTestSrcFormat format;
   
   /*< private >*/
   gboolean tags_pushed;			/* send tags just once ? */
   GstClockTimeDiff timestamp_offset;    /* base offset */
-  GstClockTime running_time;            /* total running time */
-  gint64 n_samples;                     /* total samples sent */
-  gint64 n_samples_stop;
+  GstClockTime next_time;               /* next timestamp */
+  gint64 next_sample;                   /* next sample to send */
+  gint64 next_byte;                     /* next byte to send */
+  gint64 sample_stop;
   gboolean check_seek_stop;
   gboolean eos_reached;
   gint generate_samples_per_buffer;	/* used to generate a partial buffer */
+  gboolean can_activate_pull;
   
   /* waveform specific context data */
   gdouble accumulator;			/* phase angle */