struct GstDirectSoundSink

struct GstDirectSoundSink {
  GstAudioSink sink;


  /* directsound object interface pointer */
  LPDIRECTSOUND pDS;

  /* directsound sound object interface pointer */
  LPDIRECTSOUNDBUFFER pDSBSecondary;

  /* directSound buffer size */
  guint buffer_size;

  /* offset of the circular buffer where we must write next */
  guint current_circular_offset;

  guint bytes_per_sample;

  /* current volume setup by mixer interface */
  glong volume;
  gboolean mute;
  
  /* current directsound device ID */
  gchar * device_id;

  GstCaps *cached_caps;
  /* lock used to protect writes and resets */
  GMutex dsound_lock;

  gboolean first_buffer_after_reset;

  GstAudioRingBufferFormatType type;
};