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revision 1.18, Sun Nov 17 00:51:11 2002 UTC revision 1.20, Fri Apr 4 03:16:09 2003 UTC
# Line 3  Line 3 
3   *  XVID MPEG-4 VIDEO CODEC   *  XVID MPEG-4 VIDEO CODEC
4   *  - Rate Controler module -   *  - Rate Controler module -
5   *   *
6   *  Copyright(C) 2002 Benjamin Lambert <foxer@hotmail.com>   *  This program is free software ; you can redistribute it and/or modify
7   *   *  it under the terms of the GNU General Public License as published by
  *  This file is part of XviD, a free MPEG-4 video encoder/decoder  
  *  
  *  XviD is free software; you can redistribute it and/or modify it  
  *  under the terms of the GNU General Public License as published by  
8   *  the Free Software Foundation; either version 2 of the License, or   *  the Free Software Foundation; either version 2 of the License, or
9   *  (at your option) any later version.   *  (at your option) any later version.
10   *   *
# Line 21  Line 17 
17   *  along with this program; if not, write to the Free Software   *  along with this program; if not, write to the Free Software
18   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19   *   *
20   *  Under section 8 of the GNU General Public License, the copyright   ****************************************************************************/
21   *  holders of XVID explicitly forbid distribution in the following  /*****************************************************************************
22   *  countries:   *
23   *   *  History
24   *    - Japan   *
25   *    - United States of America   *  - Mon Jun 17 13:04:15 2002 Added legal header
  *  
  *  Linking XviD statically or dynamically with other modules is making a  
  *  combined work based on XviD.  Thus, the terms and conditions of the  
  *  GNU General Public License cover the whole combination.  
  *  
  *  As a special exception, the copyright holders of XviD give you  
  *  permission to link XviD with independent modules that communicate with  
  *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the  
  *  license terms of these independent modules, and to copy and distribute  
  *  the resulting combined work under terms of your choice, provided that  
  *  every copy of the combined work is accompanied by a complete copy of  
  *  the source code of XviD (the version of XviD used to produce the  
  *  combined work), being distributed under the terms of the GNU General  
  *  Public License plus this exception.  An independent module is a module  
  *  which is not derived from or based on XviD.  
  *  
  *  Note that people who make modified versions of XviD are not obligated  
  *  to grant this special exception for their modified versions; it is  
  *  their choice whether to do so.  The GNU General Public License gives  
  *  permission to release a modified version without this exception; this  
  *  exception also makes it possible to release a modified version which  
  *  carries forward this exception.  
26   *   *
27   * $Id$   * $Id$
28   *   *
29   ****************************************************************************/   ****************************************************************************/
30    
31    
32    /* For the fabs function */
33  #include <math.h>  #include <math.h>
34    
35  #include "ratecontrol.h"  #include "ratecontrol.h"
36    
37  /*****************************************************************************  /*****************************************************************************
# Line 144  Line 121 
121          double quality_scale, base_quality, target_quality;          double quality_scale, base_quality, target_quality;
122          int32_t rtn_quant;          int32_t rtn_quant;
123    
124            if(keyframe > 2)
125                    return;
126    
127          rate_control->frames++;          rate_control->frames++;
128          rate_control->total_size += frame_size;          rate_control->total_size += frame_size;
129    
130            rate_control->rtn_quant = quant;
131    
132          deviation =          deviation =
133                  (int64_t) ((double) rate_control->total_size -                  (int64_t) ((double) rate_control->total_size -
134                                     ((double)                                     ((double)
# Line 154  Line 136 
136                                           (double) rate_control->framerate) *                                           (double) rate_control->framerate) *
137                                          (double) rate_control->frames));                                          (double) rate_control->frames));
138    
139          DPRINTF(DPRINTF_DEBUG, "CBR: frame: %i, quant: %i, deviation: %i\n",          DPRINTF(DPRINTF_RC, "CBR: frame: %i, quant: %i, deviation: %i\n",
140                          (int32_t) (rate_control->frames - 1), rate_control->rtn_quant,                                          (int32_t)(rate_control->frames - 1),
141                                            rate_control->rtn_quant,
142                          (int32_t) deviation);                          (int32_t) deviation);
143    
144          if (rate_control->rtn_quant >= 2) {          if (rate_control->rtn_quant >= 2) {
# Line 167  Line 150 
150                  if (rate_control->sequence_quality < 0.1)                  if (rate_control->sequence_quality < 0.1)
151                          rate_control->sequence_quality = 0.1;                          rate_control->sequence_quality = 0.1;
152    
153                  if (!keyframe) {                  if (keyframe != 1) {
154                          reaction_delay_factor =                          reaction_delay_factor =
155                                  (double) rate_control->reaction_delay_factor;                                  (double) rate_control->reaction_delay_factor;
156                          rate_control->avg_framesize -=                          rate_control->avg_framesize -=
# Line 229  Line 212 
212  static int  static int
213  get_initial_quant(int bpp)  get_initial_quant(int bpp)
214  {  {
215          return 5;          return 8;
216  }  }
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