text: /*
   * flowcontrol.h - routines to silently discard samples in excess (used by AEC implementation)
   *
   * Copyright (C) 2009-2012  Belledonne Communications, Grenoble, France
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 of the License, or
   *  (at your option) any later version.
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   */
  
  #ifndef flowcontrol_h
  #define flowcontrol_h
  
  
  
  typedef struct _MSAudioFlowController {
  	uint32_t target_samples;
  	uint32_t total_samples;
  	uint32_t current_pos;
  	uint32_t current_dropped;
  } MSAudioFlowController;
  
  
  #ifdef __cplusplus
  extern "C"{
  #endif
  
  MS2_PUBLIC void ms_audio_flow_controller_init(MSAudioFlowController *ctl);
  
  MS2_PUBLIC void ms_audio_flow_controller_set_target(MSAudioFlowController *ctl, uint32_t samples_to_drop, uint32_t total_samples);
  
  MS2_PUBLIC mblk_t *ms_audio_flow_controller_process(MSAudioFlowController *ctl, mblk_t *m);
  
  
  /**
   * Structure carried by MS_AUDIO_FLOW_CONTROL_DROP_EVENT
  **/
  typedef struct _MSAudioFlowControlDropEvent{
  	uint32_t flow_control_interval_ms;
  	uint32_t drop_ms;
  } MSAudioFlowControlDropEvent;
  
  /**
   * Event sent by the filter each time some samples need to be dropped.
  **/
  #define MS_AUDIO_FLOW_CONTROL_DROP_EVENT MS_FILTER_EVENT(MS_AUDIO_FLOW_CONTROL_ID, 0, MSAudioFlowControlDropEvent)
  
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  