C++ (Cpp) audio_mixer_dacs_flush_direct Examples

Example #1

File: usb_stream_player_with_cs2200.c Project: AndreyMostovov/asf

bool usb_stream_new_sample_rate(uint32_t sample_rate)
{
  audio_mixer_dacs_flush_direct(false);

  usb_stream_init(sample_rate,
                  2,
                  16,
                  false);

  return true;
}

Example #2

File: usb_stream_player_with_cs2200.c Project: AndreyMostovov/asf

void player_shutdown(void)
{
  audio_mixer_dacs_flush_direct(false);

  if (usb_stream_context)
  {
    // Free the main structure
    free(usb_stream_context);
    usb_stream_context = NULL;
  }
}

Example #3

File: buff_player.c Project: ThucVD2704/femto-usb-blink-example

void buff_player_dacs_flush(bool force)
{
  if (!buff_player_pcm_buf_fifo)
    return;
  // Wait until all the samples have been played
  if (!force)
    while (!buff_player_is_pcm_buf_fifo_empty());
  // Clean the FIFO
  if (force)
    memset(buff_player_pcm_buf_fifo, 0, sizeof(*buff_player_pcm_buf_fifo));
  audio_mixer_dacs_flush_direct(false);
}

Example #4

File: usb_specific_request.c Project: ThucVD2704/femto-usb-blink-example

void audio_speaker_set_sample_freq(void)
{
   uint32_t sample_freq=0;
   Usb_ack_setup_received_free();
   while(!Is_usb_control_out_received())
   {
     TASKS_SCHEDULE();
   }
   Usb_reset_endpoint_fifo_access(EP_CONTROL);
   LSB0(sample_freq)=Usb_read_endpoint_data(EP_CONTROL, 8);
   LSB1(sample_freq)=Usb_read_endpoint_data(EP_CONTROL, 8);
   LSB2(sample_freq)=Usb_read_endpoint_data(EP_CONTROL, 8);
   Usb_ack_control_out_received_free();
   Usb_ack_control_in_ready_send();  // send a ZLP
   while (!Is_usb_control_in_ready())
   {
     TASKS_SCHEDULE();
   }

#if (defined BOARD) && (BOARD==EVK1105) && (defined DEFAULT_DACS) && (DEFAULT_DACS==AUDIO_MIXER_DAC_AIC23B)
   // Disable microphone callback interrupt in order for the flush to not be blocked.
   // TODO: audio_mixer_dacs_flush_direct flushes Rx and Tw part of the DAC.
   //       Should we separate them? Here, we want to flash the output only.
   device_audio_disable_microphone();
#endif
   audio_mixer_dacs_flush_direct(false);
   usb_stream_init(
     sample_freq
   , 2
   , 16
   , false
   );
#if (defined BOARD) && (BOARD==EVK1105) && (defined DEFAULT_DACS) && (DEFAULT_DACS==AUDIO_MIXER_DAC_AIC23B)
   // Enable microphone call back interrupts.
   device_audio_enable_microphone();
#endif
}