1 |
/***************************************************************************** |
/***************************************************************************** |
2 |
* |
* |
3 |
* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
4 |
* - Adaptive quantization functions - |
* - Deprecated code - |
5 |
* |
* |
6 |
* Copyright(C) 2002 Peter Ross <pross@xvid.org> |
* Copyright(C) 2002 Peter Ross <pross@xvid.org> |
7 |
* 2002 Christoph Lampert <gruel@web.de> |
* 2002 Christoph Lampert <gruel@web.de> |
8 |
* |
* |
9 |
* This file is part of XviD, a free MPEG-4 video encoder/decoder |
* This program is free software ; you can redistribute it and/or modify |
10 |
* |
* it under the terms of the GNU General Public License as published by |
|
* XviD is free software; you can redistribute it and/or modify it |
|
|
* under the terms of the GNU General Public License as published by |
|
11 |
* the Free Software Foundation; either version 2 of the License, or |
* the Free Software Foundation; either version 2 of the License, or |
12 |
* (at your option) any later version. |
* (at your option) any later version. |
13 |
* |
* |
20 |
* along with this program; if not, write to the Free Software |
* along with this program; if not, write to the Free Software |
21 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
22 |
* |
* |
|
* Under section 8 of the GNU General Public License, the copyright |
|
|
* holders of XVID explicitly forbid distribution in the following |
|
|
* countries: |
|
|
* |
|
|
* - Japan |
|
|
* - United States of America |
|
|
* |
|
|
* 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. |
|
|
* |
|
23 |
* $Id$ |
* $Id$ |
24 |
* |
* |
25 |
****************************************************************************/ |
****************************************************************************/ |
26 |
|
|
27 |
#include "../portab.h" |
#include "../portab.h" |
28 |
|
#include "../global.h" |
29 |
#include "adapt_quant.h" |
#include "adapt_quant.h" |
30 |
|
|
31 |
#include <stdlib.h> /* free, malloc */ |
#include <stdlib.h> /* free, malloc */ |
32 |
|
|
|
#define MAX(a,b) (((a) > (b)) ? (a) : (b)) |
|
33 |
#define RDIFF(a,b) ((int)(a+0.5)-(int)(b+0.5)) |
#define RDIFF(a,b) ((int)(a+0.5)-(int)(b+0.5)) |
34 |
|
|
|
/***************************************************************************** |
|
|
* Functions |
|
|
****************************************************************************/ |
|
|
|
|
35 |
int |
int |
36 |
normalize_quantizer_field(float *in, |
normalize_quantizer_field(float *in, |
37 |
int *out, |
int *out, |
87 |
int min_quant, |
int min_quant, |
88 |
int max_quant, |
int max_quant, |
89 |
int mb_width, |
int mb_width, |
90 |
int mb_height) // no qstride because normalization |
int mb_height) /* no qstride because normalization */ |
91 |
{ |
{ |
92 |
int i, j, k, l; |
int i, j, k, l; |
93 |
|
|
113 |
if (!(quant = (float *) malloc(mb_width * mb_height * sizeof(float)))) |
if (!(quant = (float *) malloc(mb_width * mb_height * sizeof(float)))) |
114 |
return(-1); |
return(-1); |
115 |
|
|
116 |
if(!(val = (float *) malloc(mb_width * mb_height * sizeof(float)))) { |
if(!(val = (float *) malloc(mb_width * mb_height * sizeof(float)))) |
|
free(quant); |
|
117 |
return(-1); |
return(-1); |
|
} |
|
118 |
|
|
119 |
for (k = 0; k < mb_height; k++) { |
for (k = 0; k < mb_height; k++) { |
120 |
for (l = 0; l < mb_width; l++) // do this for all macroblocks individually |
for (l = 0; l < mb_width; l++) /* do this for all macroblocks individually */ |
121 |
{ |
{ |
122 |
quant[k * mb_width + l] = (float) framequant; |
quant[k * mb_width + l] = (float) framequant; |
123 |
|
|
124 |
// calculate luminance-masking |
/* calculate luminance-masking */ |
125 |
ptr = &buf[16 * k * stride + 16 * l]; // address of MB |
ptr = &buf[16 * k * stride + 16 * l]; /* address of MB */ |
126 |
|
|
127 |
val[k * mb_width + l] = 0.; |
val[k * mb_width + l] = 0.; |
128 |
|
|
143 |
if (((global <GlobalBrightThres) &&(global >GlobalDarkThres)) |
if (((global <GlobalBrightThres) &&(global >GlobalDarkThres)) |
144 |
|| (mid_range < MidRangeThres)) { |
|| (mid_range < MidRangeThres)) { |
145 |
for (k = 0; k < mb_height; k++) { |
for (k = 0; k < mb_height; k++) { |
146 |
for (l = 0; l < mb_width; l++) // do this for all macroblocks individually |
for (l = 0; l < mb_width; l++) /* do this for all macroblocks individually */ |
147 |
{ |
{ |
148 |
if (val[k * mb_width + l] < DarkThres) |
if (val[k * mb_width + l] < DarkThres) |
149 |
quant[k * mb_width + l] += |
quant[k * mb_width + l] += |