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revision 1.15, Sun Sep 22 17:01:36 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   *   *
  *  Copyright(C) 2002 Michael Militzer  
  *  
  *  This program is an implementation of a part of one or more MPEG-4  
  *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending  
  *  to use this software module in hardware or software products are  
  *  advised that its use may infringe existing patents or copyrights, and  
  *  any such use would be at such party's own risk.  The original  
  *  developer of this software module and his/her company, and subsequent  
  *  editors and their companies, will have no liability for use of this  
  *  software or modifications or derivatives thereof.  
  *  
6   *  This program is free software; you can redistribute it and/or modify   *  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   *  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
# Line 28  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     ****************************************************************************/
21    /*****************************************************************************
22     *
23     *  History
24     *
25     *  - Mon Jun 17 13:04:15 2002 Added legal header
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 122  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 132  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 145  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 207  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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