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/****************************************************************************** |
/****************************************************************************** |
2 |
* |
* |
3 |
* XviD Bit Rate Controller Library |
* XviD Bit Rate Controller Library |
4 |
* - VBR 2 pass bitrate controler implementation - |
* - VBR 2 pass bitrate controller implementation - |
5 |
* |
* |
6 |
* Copyright (C) 2002 Edouard Gomez <ed.gomez@wanadoo.fr> |
* Copyright (C) 2002 Foxer <email?> |
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* 2002 Dirk Knop <dknop@gwdg.de> |
8 |
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* 2002-2003 Edouard Gomez <ed.gomez@free.fr> |
9 |
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* 2003 Pete Ross <pross@xvid.org> |
10 |
* |
* |
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* The curve treatment algorithm is the one implemented by Foxer <email?> and |
* This curve treatment algorithm is the one originally implemented by Foxer |
12 |
* Dirk Knop <dknop@gwdg.de> for the XviD vfw dynamic library. |
* and tuned by Dirk Knop for the XviD vfw frontend. |
13 |
* |
* |
14 |
* This program is free software; you can redistribute it and/or modify |
* This program is free software; you can redistribute it and/or modify |
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* 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 |
25 |
* along with this program; if not, write to the Free Software |
* along with this program; if not, write to the Free Software |
26 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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* $Id: plugin_2pass2.c,v 1.1.2.1 2003-03-25 10:58:33 suxen_drol Exp $ |
* $Id: plugin_2pass2.c,v 1.1.2.23 2003-10-01 23:23:01 edgomez Exp $ |
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* |
* |
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*****************************************************************************/ |
*****************************************************************************/ |
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#include <stdio.h> |
#include <stdio.h> |
33 |
#include <math.h> |
#include <math.h> |
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#include <limits.h> |
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#define RAD2DEG 57.295779513082320876798154814105 |
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#define DEG2RAD 0.017453292519943295769236907684886 |
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#include "../xvid.h" |
#include "../xvid.h" |
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#include "../image/image.h" |
#include "../image/image.h" |
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/***************************************************************************** |
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* Some constants |
41 |
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****************************************************************************/ |
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#define DEFAULT_KEYFRAME_BOOST 0 |
44 |
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#define DEFAULT_PAYBACK_METHOD XVID_PAYBACK_PROP |
45 |
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#define DEFAULT_BITRATE_PAYBACK_DELAY 250 |
46 |
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#define DEFAULT_CURVE_COMPRESSION_HIGH 0 |
47 |
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#define DEFAULT_CURVE_COMPRESSION_LOW 0 |
48 |
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#define DEFAULT_MAX_OVERFLOW_IMPROVEMENT 60 |
49 |
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#define DEFAULT_MAX_OVERFLOW_DEGRADATION 60 |
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51 |
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/* Keyframe settings */ |
52 |
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#define DEFAULT_KFTRESHOLD 10 |
53 |
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#define DEFAULT_KFREDUCTION 20 |
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#define DEFAULT_MIN_KEY_INTERVAL 1 |
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56 |
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/***************************************************************************** |
57 |
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* Structures |
58 |
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****************************************************************************/ |
59 |
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60 |
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/* Statistics */ |
61 |
typedef struct { |
typedef struct { |
62 |
int type; /* first pass type */ |
int type; /* first pass type */ |
63 |
int quant; /* first pass quant */ |
int quant; /* first pass quant */ |
64 |
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int blks[3]; /* k,m,y blks */ |
65 |
int length; /* first pass length */ |
int length; /* first pass length */ |
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int scaled_length; /* scaled length */ |
int scaled_length; /* scaled length */ |
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int desired_length; |
int desired_length; /* desired length; calcuated during encoding */ |
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} stat_t; |
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int zone_mode; /* XVID_ZONE_xxx */ |
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double weight; |
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} stat_t; |
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/* context struct */ |
/* Context struct */ |
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typedef struct |
typedef struct |
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{ |
{ |
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xvid_plugin_2pass2_t param; |
xvid_plugin_2pass2_t param; |
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/* constant statistical data */ |
/* constant statistical data */ |
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int num_frames; |
int num_frames; |
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int num_keyframes; |
int num_keyframes; |
81 |
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uint64_t target; /* target filesize */ |
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int count[3]; /* count of each frame types */ |
int count[3]; /* count of each frame types */ |
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uint64_t tot_length[3]; /* total length of each frame types */ |
uint64_t tot_length[3]; /* total length of each frame types */ |
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uint64_t tot_scaled_length[3]; /* total scaled length of each frame type */ |
uint64_t tot_scaled_length[3]; /* total scaled length of each frame type */ |
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int max_length; /* max frame size */ |
int max_length; /* max frame size */ |
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/* zone statistical data */ |
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double avg_weight; /* average weight */ |
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int64_t tot_quant; /* total length used by XVID_ZONE_QUANT zones */ |
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double curve_comp_scale; |
double curve_comp_scale; |
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double movie_curve; |
double movie_curve; |
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double alt_curve_low; |
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double alt_curve_high; |
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double alt_curve_low_diff; |
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double alt_curve_high_diff; |
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double alt_curve_curve_bias_bonus; |
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double alt_curve_mid_qual; |
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double alt_curve_qual_dev; |
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/* dynamic */ |
/* dynamic */ |
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int * keyframe_locations; |
int * keyframe_locations; |
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stat_t * stats; |
stat_t * stats; |
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double pquant_error[32]; |
double quant_error[3][32]; |
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double bquant_error[32]; |
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int quant_count[32]; |
int quant_count[32]; |
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int last_quant[3]; |
int last_quant[3]; |
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int KFoverflow; |
int KFoverflow; |
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int KFoverflow_partial; |
int KFoverflow_partial; |
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int KF_idx; |
int KF_idx; |
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} rc_2pass2_t; |
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#define BUF_SZ 1024 |
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#define MAX_COLS 5 |
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/* open stats file, and count num frames */ |
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static int det_stats_length(rc_2pass2_t * rc, char * filename) |
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{ |
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FILE * f; |
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int n, ignore; |
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char type; |
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rc->num_frames = 0; |
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rc->num_keyframes = 0; |
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if ((f = fopen(filename, "rt")) == NULL) |
double fq_error; |
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return 0; |
} rc_2pass2_t; |
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while((n = fscanf(f, "%c %d %d %d %d %d\n", |
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&type, &ignore, &ignore, &ignore, &ignore, &ignore)) != EOF) { |
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if (type == 'i') { |
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rc->num_frames++; |
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rc->num_keyframes++; |
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}else if (type == 'p' || type == 'b' || type == 's') { |
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rc->num_frames++; |
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} |
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} |
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fclose(f); |
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return 1; |
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} |
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/* open stats file(s) and read into rc->stats array */ |
/***************************************************************************** |
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* Sub plugin functions prototypes |
118 |
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****************************************************************************/ |
119 |
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120 |
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static int rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t ** handle); |
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static int rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data); |
122 |
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static int rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data); |
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static int rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy); |
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/***************************************************************************** |
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* Plugin definition |
127 |
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****************************************************************************/ |
128 |
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static int load_stats(rc_2pass2_t *rc, char * filename1, char * filename2) |
int |
130 |
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xvid_plugin_2pass2(void * handle, int opt, void * param1, void * param2) |
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{ |
{ |
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FILE * f1, *f2; |
switch(opt) { |
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int i; |
case XVID_PLG_INFO : |
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if ((f1 = fopen(filename1, "rt"))==NULL) |
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return 0; |
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if ((f2 = fopen(filename2, "rt"))==NULL) { |
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fclose(f1); |
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return 0; |
return 0; |
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} |
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i = 0; |
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while(i < rc->num_frames) { |
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stat_t * s = &rc->stats[i]; |
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int n, ignore; |
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char type; |
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n = fscanf(f1, "%c %d %d %d %d %d\n", &type, &s->quant, &s->length, &ignore, &ignore, &ignore); |
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if (n == EOF) break; |
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if (type == 'i') { |
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s->type = XVID_TYPE_IVOP; |
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}else if (type == 'p' || type == 's') { |
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s->type = XVID_TYPE_PVOP; |
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}else if (type == 'b') { |
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s->type = XVID_TYPE_BVOP; |
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}else{ /* unknown type */ |
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printf("unk\n"); |
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continue; |
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} |
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n = fscanf(f2, "%c %d %d %d %d %d\n", &type, &ignore, &s->scaled_length, &ignore, &ignore, &ignore); |
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if (n == EOF) break; |
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if (type != 'i'&& type != 'p' && type != 'b' && type != 's') { |
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printf("unk\n"); |
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continue; /* unknown type */ |
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} |
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i++; |
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} |
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rc->num_frames = i; |
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fclose(f1); |
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if (filename2) |
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fclose(f2); |
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return 1; |
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} |
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/*static void internal_scale(rc_2pass2_t *rc) |
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{ |
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const double avg_pvop = rc->avg_length[XVID_TYPE_PVOP-1]; |
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const double avg_bvop = rc->avg_length[XVID_TYPE_BVOP-1]; |
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const uint64_t tot_pvop = rc->tot_length[XVID_TYPE_PVOP-1]; |
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const uint64_t tot_bvop = rc->tot_length[XVID_TYPE_BVOP-1]; |
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uint64_t i_total = 0; |
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double total1,total2; |
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int i; |
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for (i=0; i<rc->num_frames; i++) { |
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stat_t * s = &rc->stats[i]; |
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if (s->type == XVID_TYPE_IVOP) { |
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i_total += s->length + s->length * rc->param.keyframe_boost / 100; |
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} |
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} |
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// compensate for avi frame overhead |
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rc->target_size -= rc->num_frames * 24; |
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// perform prepass to compensate for over/undersizing |
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if (rc->param.use_alt_curve) { |
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rc->alt_curve_low = avg_pvop - avg_pvop * (double)rc->param.alt_curve_low_dist / 100.0; |
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rc->alt_curve_low_diff = avg_pvop - rc->alt_curve_low; |
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rc->alt_curve_high = avg_pvop + avg_pvop * (double)rc->param.alt_curve_high_dist / 100.0; |
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rc->alt_curve_high_diff = rc->alt_curve_high - avg_pvop; |
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if (rc->alt_curve_use_auto) { |
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if (rc->movie_curve > 1.0) { |
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rc->param.alt_curve_min_rel_qual = (int)(100.0 - (100.0 - 100.0 / rc->movie_curve) * (double)rc->param.alt_curve_auto_str / 100.0); |
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if (rc->param.alt_curve_min_rel_qual < 20) |
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rc->param.alt_curve_min_rel_qual = 20; |
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}else{ |
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rc->param.alt_curve_min_rel_qual = 100; |
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} |
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} |
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rc->alt_curve_mid_qual = (1.0 + (double)rc->param.alt_curve_min_rel_qual / 100.0) / 2.0; |
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rc->alt_curve_qual_dev = 1.0 - rc->alt_curve_mid_qual; |
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if (rc->param.alt_curve_low_dist > 100) { |
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switch(rc->param.alt_curve_type) { |
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case XVID_CURVE_SINE : // Sine Curve (high aggressiveness) |
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rc->alt_curve_qual_dev *= 2.0 / (1.0 + sin(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff))); |
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rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * sin(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff)); |
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break; |
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case XVID_CURVE_LINEAR : // Linear (medium aggressiveness) |
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rc->alt_curve_qual_dev *= 2.0 / (1.0 + avg_pvop / rc->alt_curve_low_diff); |
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rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * avg_pvop / rc->alt_curve_low_diff; |
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break; |
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case XVID_CURVE_COSINE : // Cosine Curve (low aggressiveness) |
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rc->alt_curve_qual_dev *= 2.0 / (1.0 + (1.0 - cos(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff)))); |
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rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff))); |
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} |
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} |
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} |
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total1 = 0; |
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total2 = 0; |
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136 |
for (i=0; i<rc->num_frames; i++) { |
case XVID_PLG_CREATE : |
137 |
stat_t * s = &rc->stats[i]; |
return rc_2pass2_create((xvid_plg_create_t*)param1, param2); |
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if (s->type != XVID_TYPE_IVOP) { |
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double dbytes = s->length / rc->movie_curve; |
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double dbytes2; |
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total1 += dbytes; |
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if (s->type == XVID_TYPE_BVOP) |
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dbytes *= avg_pvop / avg_bvop; |
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if (rc->param.use_alt_curve) { |
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if (dbytes > avg_pvop) { |
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if (dbytes >= rc->alt_curve_high) { |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); |
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}else{ |
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switch(rc->param.alt_curve_type){ |
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case XVID_CURVE_SINE : |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - avg_pvop) * 90.0 / rc->alt_curve_high_diff))); |
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break; |
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case XVID_CURVE_LINEAR : |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - avg_pvop) / rc->alt_curve_high_diff); |
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break; |
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case XVID_CURVE_COSINE : |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - avg_pvop) * 90.0 / rc->alt_curve_high_diff)))); |
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} |
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} |
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}else{ |
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if (dbytes <= rc->alt_curve_low){ |
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dbytes2 = dbytes; |
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}else{ |
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switch(rc->param.alt_curve_type){ |
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case XVID_CURVE_SINE : |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - avg_pvop) * 90.0 / rc->alt_curve_low_diff))); |
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break; |
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case XVID_CURVE_LINEAR : |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - avg_pvop) / rc->alt_curve_low_diff); |
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break; |
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case XVID_CURVE_COSINE : |
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dbytes2 = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - avg_pvop) * 90.0 / rc->alt_curve_low_diff)))); |
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} |
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} |
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} |
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}else{ |
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if (dbytes > avg_pvop) { |
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dbytes2 = ((double)dbytes + (avg_pvop - dbytes) * |
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rc->param.curve_compression_high / 100.0); |
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}else{ |
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dbytes2 = ((double)dbytes + (avg_pvop - dbytes) * |
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rc->param.curve_compression_low / 100.0); |
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} |
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} |
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139 |
if (s->type == XVID_TYPE_BVOP) { |
case XVID_PLG_DESTROY : |
140 |
dbytes2 *= avg_bvop / avg_pvop; |
return rc_2pass2_destroy((rc_2pass2_t*)handle, (xvid_plg_destroy_t*)param1); |
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} |
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142 |
if (dbytes2 < rc->min_length[s->type-1]) { |
case XVID_PLG_BEFORE : |
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dbytes = rc->min_length[s->type-1]; |
return rc_2pass2_before((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); |
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} |
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144 |
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total2 += dbytes2; |
case XVID_PLG_AFTER : |
146 |
} |
return rc_2pass2_after((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); |
147 |
} |
} |
148 |
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149 |
rc->curve_comp_scale = total1 / total2; |
return XVID_ERR_FAIL; |
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if (!rc->param.use_alt_curve) { |
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printf("middle frame size for asymmetric curve compression: %i", |
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(int)(avg_pvop * rc->curve_comp_scale)); |
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150 |
} |
} |
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}*/ |
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151 |
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152 |
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/***************************************************************************** |
153 |
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* Sub plugin functions definitions |
154 |
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****************************************************************************/ |
155 |
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156 |
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/* First a few local helping function prototypes */ |
157 |
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static int det_stats_length(rc_2pass2_t * rc, char * filename); |
158 |
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static int load_stats(rc_2pass2_t *rc, char * filename); |
159 |
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static void zone_process(rc_2pass2_t *rc, const xvid_plg_create_t * create); |
160 |
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static void internal_scale(rc_2pass2_t *rc); |
161 |
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static void pre_process0(rc_2pass2_t * rc); |
162 |
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static void pre_process1(rc_2pass2_t * rc); |
163 |
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164 |
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/*---------------------------------------------------------------------------- |
165 |
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*--------------------------------------------------------------------------*/ |
166 |
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167 |
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static int |
168 |
static void print_stats(rc_2pass2_t * rc) |
rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t **handle) |
169 |
{ |
{ |
170 |
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xvid_plugin_2pass2_t * param = (xvid_plugin_2pass2_t *)create->param; |
171 |
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rc_2pass2_t * rc; |
172 |
int i; |
int i; |
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for (i = 0; i < rc->num_frames; i++) { |
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stat_t * s = &rc->stats[i]; |
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printf("%i %i %i %i\n", s->type, s->quant, s->length, s->scaled_length); |
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173 |
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174 |
} |
rc = malloc(sizeof(rc_2pass2_t)); |
175 |
} |
if (rc == NULL) |
176 |
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return XVID_ERR_MEMORY; |
177 |
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178 |
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rc->param = *param; |
179 |
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180 |
/* pre-process the statistics data |
/* |
181 |
this is a clone of vfw/src/2pass.c:codec_2pass_init minus file reading, alt_curve, internal scale |
* Initialize all defaults |
182 |
*/ |
*/ |
183 |
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#define _INIT(a, b) if((a) <= 0) (a) = (b) |
184 |
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/* Let's set our defaults if needed */ |
185 |
|
_INIT(rc->param.keyframe_boost, DEFAULT_KEYFRAME_BOOST); |
186 |
|
_INIT(rc->param.payback_method, DEFAULT_PAYBACK_METHOD); |
187 |
|
_INIT(rc->param.bitrate_payback_delay, DEFAULT_BITRATE_PAYBACK_DELAY); |
188 |
|
_INIT(rc->param.curve_compression_high, DEFAULT_CURVE_COMPRESSION_HIGH); |
189 |
|
_INIT(rc->param.curve_compression_low, DEFAULT_CURVE_COMPRESSION_LOW); |
190 |
|
_INIT(rc->param.max_overflow_improvement, DEFAULT_MAX_OVERFLOW_IMPROVEMENT); |
191 |
|
_INIT(rc->param.max_overflow_degradation, DEFAULT_MAX_OVERFLOW_DEGRADATION); |
192 |
|
|
193 |
|
/* Keyframe settings */ |
194 |
|
_INIT(rc->param.kftreshold, DEFAULT_KFTRESHOLD); |
195 |
|
_INIT(rc->param.kfreduction, DEFAULT_KFREDUCTION); |
196 |
|
_INIT(rc->param.min_key_interval, DEFAULT_MIN_KEY_INTERVAL); |
197 |
|
#undef _INIT |
198 |
|
|
199 |
void pre_process(rc_2pass2_t * rc) |
/* Initialize some stuff to zero */ |
200 |
{ |
for(i=0; i<32; i++) rc->quant_count[i] = 0; |
|
int i,j; |
|
|
double total1, total2; |
|
|
uint64_t ivop_boost_total; |
|
|
|
|
|
ivop_boost_total = 0; |
|
|
rc->curve_comp_error = 0; |
|
|
|
|
|
for (i=0; i<3; i++) { |
|
|
rc->count[i]=0; |
|
|
rc->tot_length[i] = 0; |
|
|
rc->tot_scaled_length[i] = 0; |
|
|
rc->last_quant[i] = 0; |
|
|
} |
|
|
|
|
|
for (i=0; i<32;i++) { |
|
|
rc->pquant_error[i] = 0; |
|
|
rc->bquant_error[i] = 0; |
|
|
rc->quant_count[i] = 0; |
|
|
} |
|
|
|
|
|
for (i=j=0; i<rc->num_frames; i++) { |
|
|
stat_t * s = &rc->stats[i]; |
|
|
|
|
|
rc->count[s->type-1]++; |
|
|
rc->tot_length[s->type-1] += s->length; |
|
|
rc->tot_scaled_length[s->type-1] += s->scaled_length; |
|
|
|
|
|
if (i == 0 || s->length < rc->min_length[s->type-1]) { |
|
|
rc->min_length[s->type-1] = s->length; |
|
|
} |
|
|
|
|
|
if (i == 0 || s->length > rc->max_length) { |
|
|
rc->max_length = s->length; |
|
|
} |
|
|
|
|
|
if (s->type == XVID_TYPE_IVOP) { |
|
|
ivop_boost_total += s->scaled_length * rc->param.keyframe_boost / 100; |
|
|
rc->keyframe_locations[j] = i; |
|
|
j++; |
|
|
} |
|
|
} |
|
|
rc->keyframe_locations[j] = i; |
|
|
|
|
|
rc->movie_curve = ((double)(rc->tot_scaled_length[XVID_TYPE_PVOP-1] + rc->tot_scaled_length[XVID_TYPE_BVOP-1] + ivop_boost_total) / |
|
|
(rc->tot_scaled_length[XVID_TYPE_PVOP-1] + rc->tot_scaled_length[XVID_TYPE_BVOP-1])); |
|
201 |
|
|
202 |
for(i=0; i<3; i++) { |
for(i=0; i<3; i++) { |
203 |
if (rc->count[i] == 0 || rc->movie_curve == 0) { |
int j; |
204 |
rc->avg_length[i] = 1; |
for (j=0; j<32; j++) |
205 |
}else{ |
rc->quant_error[i][j] = 0; |
|
rc->avg_length[i] = rc->tot_scaled_length[i] / rc->count[i] / rc->movie_curve; |
|
|
} |
|
|
} |
|
|
|
|
|
printf("--\n"); |
|
|
/* alt curve stuff here */ |
|
|
|
|
|
if (rc->param.use_alt_curve) { |
|
|
const double avg_pvop = rc->avg_length[XVID_TYPE_PVOP-1]; |
|
|
const uint64_t tot_pvop = rc->tot_length[XVID_TYPE_PVOP-1]; |
|
|
const uint64_t tot_bvop = rc->tot_length[XVID_TYPE_BVOP-1]; |
|
|
const uint64_t tot_scaled_pvop = rc->tot_scaled_length[XVID_TYPE_PVOP-1]; |
|
|
const uint64_t tot_scaled_bvop = rc->tot_scaled_length[XVID_TYPE_BVOP-1]; |
|
|
|
|
|
rc->alt_curve_low = avg_pvop - avg_pvop * (double)rc->param.alt_curve_low_dist / 100.0; |
|
|
rc->alt_curve_low_diff = avg_pvop - rc->alt_curve_low; |
|
|
rc->alt_curve_high = avg_pvop + avg_pvop * (double)rc->param.alt_curve_high_dist / 100.0; |
|
|
rc->alt_curve_high_diff = rc->alt_curve_high - avg_pvop; |
|
|
|
|
|
if (rc->param.alt_curve_use_auto) { |
|
|
if (tot_bvop + tot_pvop > tot_scaled_bvop + tot_scaled_pvop) { |
|
|
rc->param.alt_curve_min_rel_qual = (int)(100.0 - (100.0 - 100.0 / |
|
|
((double)(tot_pvop + tot_bvop) / (double)(tot_scaled_pvop + tot_scaled_bvop))) * (double)rc->param.alt_curve_auto_str / 100.0); |
|
|
|
|
|
if (rc->param.alt_curve_min_rel_qual < 20) |
|
|
rc->param.alt_curve_min_rel_qual = 20; |
|
|
}else{ |
|
|
rc->param.alt_curve_min_rel_qual = 100; |
|
|
} |
|
|
} |
|
|
rc->alt_curve_mid_qual = (1.0 + (double)rc->param.alt_curve_min_rel_qual / 100.0) / 2.0; |
|
|
rc->alt_curve_qual_dev = 1.0 - rc->alt_curve_mid_qual; |
|
|
|
|
|
if (rc->param.alt_curve_low_dist > 100) { |
|
|
switch(rc->param.alt_curve_type) { |
|
|
case XVID_CURVE_SINE: // Sine Curve (high aggressiveness) |
|
|
rc->alt_curve_qual_dev *= 2.0 / (1.0 + sin(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff))); |
|
|
rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * sin(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff)); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR: // Linear (medium aggressiveness) |
|
|
rc->alt_curve_qual_dev *= 2.0 / (1.0 + avg_pvop / rc->alt_curve_low_diff); |
|
|
rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * avg_pvop / rc->alt_curve_low_diff; |
|
|
break; |
|
|
case XVID_CURVE_COSINE: // Cosine Curve (low aggressiveness) |
|
|
rc->alt_curve_qual_dev *= 2.0 / (1.0 + (1.0 - cos(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff)))); |
|
|
rc->alt_curve_mid_qual = 1.0 - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * (avg_pvop * 90.0 / rc->alt_curve_low_diff))); |
|
|
} |
|
|
} |
|
|
} |
|
|
/* --- */ |
|
|
|
|
|
|
|
|
total1=total2=0; |
|
|
for (i=j=0; i<rc->num_frames; i++) { |
|
|
stat_t * s = &rc->stats[i]; |
|
|
|
|
|
if (s->type != XVID_TYPE_IVOP) { |
|
|
double dbytes,dbytes2; |
|
|
|
|
|
dbytes = s->scaled_length / rc->movie_curve; |
|
|
dbytes2 = 0; /* XXX: warning */ |
|
|
total1 += dbytes; |
|
|
if (s->type == XVID_TYPE_BVOP) |
|
|
dbytes *= rc->avg_length[XVID_TYPE_PVOP-1] / rc->avg_length[XVID_TYPE_BVOP-1]; |
|
|
|
|
|
if (rc->param.use_alt_curve) { |
|
|
if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { |
|
|
|
|
|
if (dbytes >= rc->alt_curve_high) { |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); |
|
|
}else{ |
|
|
switch(rc->param.alt_curve_type) { |
|
|
case XVID_CURVE_SINE : |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff))); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR : |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_high_diff); |
|
|
break; |
|
|
case XVID_CURVE_COSINE : |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff)))); |
|
|
} |
|
|
} |
|
|
}else{ |
|
|
if (dbytes <= rc->alt_curve_low) { |
|
|
dbytes2 = dbytes; |
|
|
}else{ |
|
|
switch(rc->param.alt_curve_type) { |
|
|
case XVID_CURVE_SINE : |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff))); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR : |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_low_diff); |
|
|
break; |
|
|
case XVID_CURVE_COSINE : |
|
|
dbytes2 = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff)))); |
|
|
} |
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
}else{ |
|
|
if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { |
|
|
dbytes2=((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_high / 100.0); |
|
|
}else{ |
|
|
dbytes2 = ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_low / 100.0); |
|
|
} |
|
|
} |
|
|
|
|
|
if (s->type == XVID_TYPE_BVOP) { |
|
|
dbytes2 *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; |
|
|
if (dbytes2 < rc->min_length[XVID_TYPE_BVOP-1]) |
|
|
dbytes2 = rc->min_length[XVID_TYPE_BVOP-1]; |
|
|
}else{ |
|
|
if (dbytes2 < rc->min_length[XVID_TYPE_PVOP-1]) |
|
|
dbytes2 = rc->min_length[XVID_TYPE_PVOP-1]; |
|
|
} |
|
|
total2 += dbytes2; |
|
|
} |
|
|
} |
|
|
|
|
|
rc->curve_comp_scale = total1 / total2; |
|
|
|
|
|
if (!rc->param.use_alt_curve) { |
|
|
printf("middle frame size for asymmetric curve compression: %i\n", |
|
|
(int)(rc->avg_length[XVID_TYPE_PVOP-1] * rc->curve_comp_scale)); |
|
|
} |
|
|
|
|
|
if (rc->param.use_alt_curve) { |
|
|
int bonus_bias = rc->param.alt_curve_bonus_bias; |
|
|
int oldquant = 1; |
|
|
|
|
|
if (rc->param.alt_curve_use_auto_bonus_bias) |
|
|
bonus_bias = rc->param.alt_curve_min_rel_qual; |
|
|
|
|
|
rc->alt_curve_curve_bias_bonus = (total1 - total2) * (double)bonus_bias / 100.0 / (double)(rc->num_frames /* - credits_frames */ - rc->num_keyframes); |
|
|
rc->curve_comp_scale = ((total1 - total2) * (1.0 - (double)bonus_bias / 100.0) + total2) / total2; |
|
|
|
|
|
|
|
|
/* special info for alt curve: bias bonus and quantizer thresholds */ |
|
|
|
|
|
printf("avg scaled framesize:%i", (int)rc->avg_length[XVID_TYPE_PVOP-1]); |
|
|
printf("bias bonus:%i bytes", (int)rc->alt_curve_curve_bias_bonus); |
|
|
|
|
|
for (i=1; i <= (int)(rc->alt_curve_high*2)+1; i++) { |
|
|
double curve_temp, dbytes; |
|
|
int newquant; |
|
|
|
|
|
dbytes = i; |
|
|
if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { |
|
|
if (dbytes >= rc->alt_curve_high) { |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); |
|
|
}else{ |
|
|
switch(rc->param.alt_curve_type) |
|
|
{ |
|
|
case XVID_CURVE_SINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff))); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_high_diff); |
|
|
break; |
|
|
case XVID_CURVE_COSINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff)))); |
|
|
} |
|
|
} |
|
|
}else{ |
|
|
if (dbytes <= rc->alt_curve_low) { |
|
|
curve_temp = dbytes; |
|
|
}else{ |
|
|
switch(rc->param.alt_curve_type) |
|
|
{ |
|
|
case XVID_CURVE_SINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff))); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_low_diff); |
|
|
break; |
|
|
case XVID_CURVE_COSINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff)))); |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
if (rc->movie_curve > 1.0) |
|
|
dbytes *= rc->movie_curve; |
|
|
|
|
|
newquant = (int)(dbytes * 2.0 / (curve_temp * rc->curve_comp_scale + rc->alt_curve_curve_bias_bonus)); |
|
|
if (newquant > 1) { |
|
|
if (newquant != oldquant) { |
|
|
int percent = (int)((i - rc->avg_length[XVID_TYPE_PVOP-1]) * 100.0 / rc->avg_length[XVID_TYPE_PVOP-1]); |
|
|
oldquant = newquant; |
|
|
printf("quant:%i threshold at %i : %i percent", newquant, i, percent); |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
} |
|
|
|
|
|
rc->overflow = 0; |
|
|
rc->KFoverflow = 0; |
|
|
rc->KFoverflow_partial = 0; |
|
|
rc->KF_idx = 1; |
|
206 |
} |
} |
207 |
|
|
208 |
|
for (i=0; i<3; i++) |
209 |
|
rc->last_quant[i] = 0; |
210 |
|
|
211 |
|
rc->fq_error = 0; |
212 |
|
|
213 |
|
/* Count frames in the stats file */ |
214 |
static int rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t ** handle) |
if (!det_stats_length(rc, param->filename)) { |
215 |
{ |
DPRINTF(XVID_DEBUG_RC,"ERROR: fopen %s failed\n", param->filename); |
|
xvid_plugin_2pass2_t * param = (xvid_plugin_2pass2_t *)create->param; |
|
|
rc_2pass2_t * rc; |
|
|
|
|
|
rc = malloc(sizeof(rc_2pass2_t)); |
|
|
if (rc == NULL) |
|
|
return XVID_ERR_MEMORY; |
|
|
|
|
|
rc->param = *param; |
|
|
|
|
|
if (rc->param.keyframe_boost <= 0) rc->param.keyframe_boost = 0; |
|
|
if (rc->param.payback_method <= 0) rc->param.payback_method = XVID_PAYBACK_PROP; |
|
|
if (rc->param.bitrate_payback_delay <= 0) rc->param.bitrate_payback_delay = 250; |
|
|
if (rc->param.curve_compression_high <= 0) rc->param.curve_compression_high = 0; |
|
|
if (rc->param.curve_compression_low <= 0) rc->param.curve_compression_low = 0; |
|
|
if (rc->param.max_overflow_improvement <= 0) rc->param.max_overflow_improvement = 60; |
|
|
if (rc->param.max_overflow_degradation <= 0) rc->param.max_overflow_degradation = 60; |
|
|
if (rc->param.min_quant[0] <= 0) rc->param.min_quant[0] = 2; |
|
|
if (rc->param.max_quant[0] <= 0) rc->param.max_quant[0] = 31; |
|
|
if (rc->param.min_quant[1] <= 0) rc->param.min_quant[1] = 2; |
|
|
if (rc->param.max_quant[1] <= 0) rc->param.max_quant[1] = 31; |
|
|
if (rc->param.min_quant[2] <= 0) rc->param.min_quant[2] = 2; |
|
|
if (rc->param.max_quant[2] <= 0) rc->param.max_quant[2] = 31; |
|
|
|
|
|
if (rc->param.use_alt_curve <= 0) rc->param.use_alt_curve = 0; |
|
|
if (rc->param.alt_curve_high_dist <= 0) rc->param.alt_curve_high_dist = 500; |
|
|
if (rc->param.alt_curve_low_dist <= 0) rc->param.alt_curve_low_dist = 90; |
|
|
if (rc->param.alt_curve_use_auto <= 0) rc->param.alt_curve_use_auto = 1; |
|
|
if (rc->param.alt_curve_auto_str <= 0) rc->param.alt_curve_auto_str = 30; |
|
|
if (rc->param.alt_curve_type <= 0) rc->param.alt_curve_type = XVID_CURVE_LINEAR; |
|
|
if (rc->param.alt_curve_min_rel_qual <= 0) rc->param.alt_curve_min_rel_qual = 50; |
|
|
if (rc->param.alt_curve_use_auto_bonus_bias <= 0) rc->param.alt_curve_use_auto_bonus_bias = 1; |
|
|
if (rc->param.alt_curve_bonus_bias <= 0) rc->param.alt_curve_bonus_bias = 50; |
|
|
|
|
|
if (rc->param.kftreshold <= 0) rc->param.kftreshold = 10; |
|
|
if (rc->param.kfreduction <= 0) rc->param.kfreduction = 20; |
|
|
if (rc->param.min_key_interval <= 0) rc->param.min_key_interval = 300; |
|
|
|
|
|
if (!det_stats_length(rc, param->filename1)){ |
|
|
DPRINTF(DPRINTF_RC,"fopen %s failed\n", param->filename1); |
|
216 |
free(rc); |
free(rc); |
217 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
218 |
} |
} |
219 |
|
|
220 |
|
/* Allocate the stats' memory */ |
221 |
if ((rc->stats = malloc(rc->num_frames * sizeof(stat_t))) == NULL) { |
if ((rc->stats = malloc(rc->num_frames * sizeof(stat_t))) == NULL) { |
222 |
free(rc); |
free(rc); |
223 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
224 |
} |
} |
225 |
|
|
226 |
/* XXX: do we need an addition location */ |
/* |
227 |
if ((rc->keyframe_locations = malloc((rc->num_keyframes + 1) * sizeof(int))) == NULL) { |
* Allocate keyframes location's memory |
228 |
|
* PS: see comment in pre_process0 for the +1 location requirement |
229 |
|
*/ |
230 |
|
rc->keyframe_locations = malloc((rc->num_keyframes + 1) * sizeof(int)); |
231 |
|
if (rc->keyframe_locations == NULL) { |
232 |
free(rc->stats); |
free(rc->stats); |
233 |
free(rc); |
free(rc); |
234 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
235 |
} |
} |
236 |
|
|
237 |
if (!load_stats(rc, param->filename1, param->filename2)) { |
if (!load_stats(rc, param->filename)) { |
238 |
DPRINTF(DPRINTF_RC,"fopen %s,%s failed\n", param->filename1, param->filename2); |
DPRINTF(XVID_DEBUG_RC,"ERROR: fopen %s failed\n", param->filename); |
239 |
free(rc->keyframe_locations); |
free(rc->keyframe_locations); |
240 |
free(rc->stats); |
free(rc->stats); |
241 |
free(rc); |
free(rc); |
242 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
243 |
} |
} |
244 |
|
|
245 |
/* pre-process our stats */ |
/* Compute the target filesize */ |
246 |
pre_process(rc); |
if (rc->param.bitrate<0) { |
247 |
|
/* if negative, bitrate equals the target (in kbytes) */ |
248 |
|
rc->target = (-rc->param.bitrate) * 1024; |
249 |
|
} else if (rc->num_frames < create->fbase/create->fincr) { |
250 |
|
/* Source sequence is less than 1s long, we do as if it was 1s long */ |
251 |
|
rc->target = rc->param.bitrate / 8; |
252 |
|
} else { |
253 |
|
/* Target filesize = bitrate/8 * numframes / framerate */ |
254 |
|
rc->target = |
255 |
|
((uint64_t)rc->param.bitrate * (uint64_t)rc->num_frames * \ |
256 |
|
(uint64_t)create->fincr) / \ |
257 |
|
((uint64_t)create->fbase * 8); |
258 |
|
} |
259 |
|
|
260 |
|
DPRINTF(XVID_DEBUG_RC, "Frame rate: %d/%d (%ffps)\n", |
261 |
|
create->fbase, create->fincr, |
262 |
|
(double)create->fbase/(double)create->fincr); |
263 |
|
DPRINTF(XVID_DEBUG_RC, "Number of frames: %d\n", rc->num_frames); |
264 |
|
DPRINTF(XVID_DEBUG_RC, "Target bitrate: %ld\n", rc->param.bitrate); |
265 |
|
DPRINTF(XVID_DEBUG_RC, "Target filesize: %lld\n", rc->target); |
266 |
|
|
267 |
|
/* Compensate the average frame overhead caused by the container */ |
268 |
|
rc->target -= rc->num_frames*rc->param.container_frame_overhead; |
269 |
|
DPRINTF(XVID_DEBUG_RC, "Container Frame overhead: %d\n", rc->param.container_frame_overhead); |
270 |
|
DPRINTF(XVID_DEBUG_RC, "Target filesize (after container compensation): %lld\n", rc->target); |
271 |
|
|
272 |
|
/* |
273 |
|
* First data pre processing: |
274 |
|
* - finds the minimum frame length for each frame type during 1st pass. |
275 |
|
* rc->min_size[] |
276 |
|
* - determines the maximum frame length observed (no frame type distinction). |
277 |
|
* rc->max_size |
278 |
|
* - count how many times each frame type has been used. |
279 |
|
* rc->count[] |
280 |
|
* - total bytes used per frame type |
281 |
|
* rc->total[] |
282 |
|
* - store keyframe location |
283 |
|
* rc->keyframe_locations[] |
284 |
|
*/ |
285 |
|
pre_process0(rc); |
286 |
|
|
287 |
|
/* |
288 |
|
* When bitrate is not given it means it has been scaled by an external |
289 |
|
* application |
290 |
|
*/ |
291 |
|
if (rc->param.bitrate) { |
292 |
|
/* Apply zone settings */ |
293 |
|
zone_process(rc, create); |
294 |
|
/* Perform curve scaling */ |
295 |
|
internal_scale(rc); |
296 |
|
} else { |
297 |
|
/* External scaling -- zones are ignored */ |
298 |
|
for (i=0;i<rc->num_frames;i++) { |
299 |
|
rc->stats[i].zone_mode = XVID_ZONE_WEIGHT; |
300 |
|
rc->stats[i].weight = 1.0; |
301 |
|
} |
302 |
|
rc->avg_weight = 1.0; |
303 |
|
rc->tot_quant = 0; |
304 |
|
} |
305 |
|
|
306 |
|
pre_process1(rc); |
307 |
|
|
308 |
*handle = rc; |
*handle = rc; |
309 |
return(0); |
return(0); |
310 |
} |
} |
311 |
|
|
312 |
|
/*---------------------------------------------------------------------------- |
313 |
|
*--------------------------------------------------------------------------*/ |
314 |
|
|
315 |
static int rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy) |
static int |
316 |
|
rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy) |
317 |
{ |
{ |
318 |
free(rc->keyframe_locations); |
free(rc->keyframe_locations); |
319 |
free(rc->stats); |
free(rc->stats); |
321 |
return(0); |
return(0); |
322 |
} |
} |
323 |
|
|
324 |
|
/*---------------------------------------------------------------------------- |
325 |
|
*--------------------------------------------------------------------------*/ |
326 |
|
|
327 |
|
static int |
328 |
static int rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data) |
rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data) |
329 |
{ |
{ |
330 |
stat_t * s = &rc->stats[data->frame_num]; |
stat_t * s = &rc->stats[data->frame_num]; |
331 |
int overflow; |
int overflow; |
332 |
int desired; |
int desired; |
333 |
double dbytes; |
double dbytes; |
334 |
double curve_temp; |
double curve_temp; |
335 |
|
double scaled_quant; |
336 |
int capped_to_max_framesize = 0; |
int capped_to_max_framesize = 0; |
337 |
|
|
338 |
if (data->frame_num >= rc->num_frames) { |
/* |
339 |
/* insufficent stats data */ |
* This function is quite long but easy to understand. In order to simplify |
340 |
return 0; |
* the code path (a bit), we treat 3 cases that can return immediatly. |
341 |
|
*/ |
342 |
|
|
343 |
|
/* First case: Another plugin has already set a quantizer */ |
344 |
|
if (data->quant > 0) |
345 |
|
return(0); |
346 |
|
|
347 |
|
/* Second case: We are in a Quant zone */ |
348 |
|
if (s->zone_mode == XVID_ZONE_QUANT) { |
349 |
|
rc->fq_error += s->weight; |
350 |
|
data->quant = (int)rc->fq_error; |
351 |
|
rc->fq_error -= data->quant; |
352 |
|
|
353 |
|
s->desired_length = s->length; |
354 |
|
|
355 |
|
return(0); |
356 |
} |
} |
357 |
|
|
358 |
overflow = rc->overflow / 8; /* XXX: why by 8 */ |
/* Third case: insufficent stats data */ |
359 |
|
if (data->frame_num >= rc->num_frames) |
360 |
|
return 0; |
361 |
|
|
362 |
|
/* XXX: why by 8 */ |
363 |
|
overflow = rc->overflow / 8; |
364 |
|
|
365 |
if (s->type == XVID_TYPE_IVOP) { /* XXX: why */ |
/* |
366 |
|
* The rc->overflow field represents the overflow in current scene (between two |
367 |
|
* IFrames) so we must not forget to reset it if we are entering a new scene |
368 |
|
*/ |
369 |
|
if (s->type == XVID_TYPE_IVOP) |
370 |
overflow = 0; |
overflow = 0; |
|
} |
|
371 |
|
|
372 |
desired = s->scaled_length; |
desired = s->scaled_length; |
373 |
|
|
374 |
dbytes = desired; |
dbytes = desired; |
375 |
if (s->type == XVID_TYPE_IVOP) { |
if (s->type == XVID_TYPE_IVOP) |
376 |
dbytes += desired * rc->param.keyframe_boost / 100; |
dbytes += desired * rc->param.keyframe_boost / 100; |
|
} |
|
377 |
dbytes /= rc->movie_curve; |
dbytes /= rc->movie_curve; |
378 |
|
|
379 |
if (s->type == XVID_TYPE_BVOP) { |
/* |
380 |
dbytes *= rc->avg_length[XVID_TYPE_PVOP-1] / rc->avg_length[XVID_TYPE_BVOP-1]; |
* Apply user's choosen Payback method. Payback helps bitrate to follow the |
381 |
} |
* scaled curve "paying back" past errors in curve previsions. |
382 |
|
*/ |
383 |
if (rc->param.payback_method == XVID_PAYBACK_BIAS) { |
if (rc->param.payback_method == XVID_PAYBACK_BIAS) { |
384 |
desired =(int)(rc->curve_comp_error / rc->param.bitrate_payback_delay); |
desired =(int)(rc->curve_comp_error / rc->param.bitrate_payback_delay); |
385 |
}else{ |
}else{ |
386 |
desired = (int)(rc->curve_comp_error * dbytes / |
desired = (int)(rc->curve_comp_error * dbytes / |
387 |
rc->avg_length[XVID_TYPE_PVOP-1] / rc->param.bitrate_payback_delay); |
rc->avg_length[s->type-1] / rc->param.bitrate_payback_delay); |
388 |
|
|
389 |
if (labs(desired) > fabs(rc->curve_comp_error)) { |
if (labs(desired) > fabs(rc->curve_comp_error)) |
390 |
desired = (int)rc->curve_comp_error; |
desired = (int)rc->curve_comp_error; |
391 |
} |
} |
|
} |
|
392 |
|
|
393 |
rc->curve_comp_error -= desired; |
rc->curve_comp_error -= desired; |
394 |
|
|
395 |
/* alt curve */ |
/* XXX: warning */ |
396 |
|
curve_temp = 0; |
397 |
|
|
398 |
curve_temp = 0; /* XXX: warning */ |
if ((rc->param.curve_compression_high + rc->param.curve_compression_low) && s->type != XVID_TYPE_IVOP) { |
|
|
|
|
if (rc->param.use_alt_curve) { |
|
|
if (s->type != XVID_TYPE_IVOP) { |
|
|
if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { |
|
|
if (dbytes >= rc->alt_curve_high) { |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev); |
|
|
}else{ |
|
|
switch(rc->param.alt_curve_type) { |
|
|
case XVID_CURVE_SINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff))); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_high_diff); |
|
|
break; |
|
|
case XVID_CURVE_COSINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_high_diff)))); |
|
|
} |
|
|
} |
|
|
}else{ |
|
|
if (dbytes <= rc->alt_curve_low){ |
|
|
curve_temp = dbytes; |
|
|
}else{ |
|
|
switch(rc->param.alt_curve_type) { |
|
|
case XVID_CURVE_SINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * sin(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff))); |
|
|
break; |
|
|
case XVID_CURVE_LINEAR : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual - rc->alt_curve_qual_dev * (dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) / rc->alt_curve_low_diff); |
|
|
break; |
|
|
case XVID_CURVE_COSINE : |
|
|
curve_temp = dbytes * (rc->alt_curve_mid_qual + rc->alt_curve_qual_dev * (1.0 - cos(DEG2RAD * ((dbytes - rc->avg_length[XVID_TYPE_PVOP-1]) * 90.0 / rc->alt_curve_low_diff)))); |
|
|
} |
|
|
} |
|
|
} |
|
|
if (s->type == XVID_TYPE_BVOP) |
|
|
curve_temp *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; |
|
|
|
|
|
curve_temp = curve_temp * rc->curve_comp_scale + rc->alt_curve_curve_bias_bonus; |
|
|
|
|
|
desired += ((int)curve_temp); |
|
|
rc->curve_comp_error += curve_temp - (int)curve_temp; |
|
|
}else{ |
|
|
if (s->type == XVID_TYPE_BVOP) |
|
|
dbytes *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; |
|
|
|
|
|
desired += ((int)dbytes); |
|
|
rc->curve_comp_error += dbytes - (int)dbytes; |
|
|
} |
|
|
|
|
|
}else if ((rc->param.curve_compression_high + rc->param.curve_compression_low) && s->type != XVID_TYPE_IVOP) { |
|
399 |
|
|
400 |
curve_temp = rc->curve_comp_scale; |
curve_temp = rc->curve_comp_scale; |
401 |
if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { |
if (dbytes > rc->avg_length[s->type-1]) { |
402 |
curve_temp *= ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_high / 100.0); |
curve_temp *= ((double)dbytes + (rc->avg_length[s->type-1] - dbytes) * rc->param.curve_compression_high / 100.0); |
403 |
} else { |
} else { |
404 |
curve_temp *= ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_low / 100.0); |
curve_temp *= ((double)dbytes + (rc->avg_length[s->type-1] - dbytes) * rc->param.curve_compression_low / 100.0); |
|
} |
|
|
|
|
|
if (s->type == XVID_TYPE_BVOP){ |
|
|
curve_temp *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; |
|
405 |
} |
} |
406 |
|
|
407 |
desired += (int)curve_temp; |
desired += (int)curve_temp; |
408 |
rc->curve_comp_error += curve_temp - (int)curve_temp; |
rc->curve_comp_error += curve_temp - (int)curve_temp; |
409 |
}else{ |
}else{ |
|
if (s->type == XVID_TYPE_BVOP){ |
|
|
dbytes *= rc->avg_length[XVID_TYPE_BVOP-1] / rc->avg_length[XVID_TYPE_PVOP-1]; |
|
|
} |
|
|
|
|
410 |
desired += (int)dbytes; |
desired += (int)dbytes; |
411 |
rc->curve_comp_error += dbytes - (int)dbytes; |
rc->curve_comp_error += dbytes - (int)dbytes; |
412 |
} |
} |
413 |
|
|
414 |
|
/* |
415 |
|
* We can't do bigger frames than first pass, this would be stupid as first |
416 |
|
* pass is quant=2 and that reaching quant=1 is not worth it. We would lose |
417 |
|
* many bytes and we would not not gain much quality. |
418 |
|
*/ |
419 |
if (desired > s->length){ |
if (desired > s->length){ |
420 |
rc->curve_comp_error += desired - s->length; |
rc->curve_comp_error += desired - s->length; |
421 |
desired = s->length; |
desired = s->length; |
430 |
|
|
431 |
s->desired_length = desired; |
s->desired_length = desired; |
432 |
|
|
433 |
|
/* |
434 |
/* if this keyframe is too close to the next, reduce it's byte allotment |
* if this keyframe is too close to the next, reduce it's byte allotment |
435 |
XXX: why do we do this after setting the desired length */ |
* XXX: why do we do this after setting the desired length ? |
436 |
|
*/ |
437 |
|
|
438 |
if (s->type == XVID_TYPE_IVOP) { |
if (s->type == XVID_TYPE_IVOP) { |
439 |
int KFdistance = rc->keyframe_locations[rc->KF_idx] - rc->keyframe_locations[rc->KF_idx - 1]; |
int KFdistance = rc->keyframe_locations[rc->KF_idx] - rc->keyframe_locations[rc->KF_idx - 1]; |
440 |
|
|
441 |
if (KFdistance < rc->param.kftreshold) { |
if (KFdistance < rc->param.kftreshold) { |
442 |
|
|
443 |
KFdistance = KFdistance - rc->param.min_key_interval; |
KFdistance -= rc->param.min_key_interval; |
444 |
|
|
445 |
if (KFdistance >= 0) { |
if (KFdistance >= 0) { |
446 |
int KF_min_size; |
int KF_min_size; |
458 |
} |
} |
459 |
} |
} |
460 |
|
|
461 |
|
/* |
462 |
|
* The "sens commun" would force us to use rc->avg_length[s->type-1] but |
463 |
|
* even VFW code uses the pframe average length. Note that this length is |
464 |
|
* used with desired which represents bframes _and_ pframes length. |
465 |
|
* |
466 |
|
* XXX: why are we using the avg pframe length for all frame types ? |
467 |
|
*/ |
468 |
overflow = (int)((double)overflow * desired / rc->avg_length[XVID_TYPE_PVOP-1]); |
overflow = (int)((double)overflow * desired / rc->avg_length[XVID_TYPE_PVOP-1]); |
469 |
|
|
470 |
// Foxer: reign in overflow with huge frames |
/* Reign in overflow with huge frames */ |
471 |
if (labs(overflow) > labs(rc->overflow)) { |
if (labs(overflow) > labs(rc->overflow)) |
472 |
overflow = rc->overflow; |
overflow = rc->overflow; |
|
} |
|
|
|
|
|
// Foxer: make sure overflow doesn't run away |
|
473 |
|
|
474 |
|
/* Make sure overflow doesn't run away */ |
475 |
if (overflow > desired * rc->param.max_overflow_improvement / 100) { |
if (overflow > desired * rc->param.max_overflow_improvement / 100) { |
476 |
desired += (overflow <= desired) ? desired * rc->param.max_overflow_improvement / 100 : |
desired += (overflow <= desired) ? desired * rc->param.max_overflow_improvement / 100 : |
477 |
overflow * rc->param.max_overflow_improvement / 100; |
overflow * rc->param.max_overflow_improvement / 100; |
481 |
desired += overflow; |
desired += overflow; |
482 |
} |
} |
483 |
|
|
484 |
|
/* Make sure we are not higher than desired frame size */ |
485 |
if (desired > rc->max_length) { |
if (desired > rc->max_length) { |
486 |
capped_to_max_framesize = 1; |
capped_to_max_framesize = 1; |
487 |
desired = rc->max_length; |
desired = rc->max_length; |
488 |
|
DPRINTF(XVID_DEBUG_RC,"[%i] Capped to maximum frame size\n", |
489 |
|
data->frame_num); |
490 |
} |
} |
491 |
|
|
492 |
// make sure to not scale below the minimum framesize |
/* Make sure to not scale below the minimum framesize */ |
493 |
if (desired < rc->min_length[s->type-1]) { |
if (desired < rc->min_length[s->type-1]) { |
494 |
desired = rc->min_length[s->type-1]; |
desired = rc->min_length[s->type-1]; |
495 |
|
DPRINTF(XVID_DEBUG_RC,"[%i] Capped to minimum frame size\n", |
496 |
|
data->frame_num); |
497 |
} |
} |
498 |
|
|
499 |
|
/* |
500 |
|
* Don't laugh at this very 'simple' quant<->filesize relationship, it |
501 |
|
* proves to be acurate enough for our algorithm |
502 |
|
*/ |
503 |
|
scaled_quant = (double)s->quant*(double)s->length/(double)desired; |
504 |
|
|
505 |
// very 'simple' quant<->filesize relationship |
/* |
506 |
data->quant= (s->quant * s->length) / desired; |
* Quantizer has been scaled using floating point operations/results, we |
507 |
|
* must cast it to integer |
508 |
|
*/ |
509 |
|
data->quant = (int)scaled_quant; |
510 |
|
|
511 |
|
/* Let's clip the computed quantizer, if needed */ |
512 |
if (data->quant < 1) { |
if (data->quant < 1) { |
513 |
data->quant = 1; |
data->quant = 1; |
514 |
} else if (data->quant > 31) { |
} else if (data->quant > 31) { |
515 |
data->quant = 31; |
data->quant = 31; |
516 |
} |
} else if (s->type != XVID_TYPE_IVOP) { |
517 |
else if (s->type != XVID_TYPE_IVOP) |
|
518 |
{ |
/* |
519 |
// Foxer: aid desired quantizer precision by accumulating decision error |
* The frame quantizer has not been clipped, this appears to be a good |
520 |
if (s->type== XVID_TYPE_BVOP) { |
* computed quantizer, do not loose quantizer decimal part that we |
521 |
rc->bquant_error[data->quant] += ((double)(s->quant * s->length) / desired) - data->quant; |
* accumulate for later reuse when its sum represents a complete unit. |
522 |
|
*/ |
523 |
|
rc->quant_error[s->type-1][data->quant] += scaled_quant - (double)data->quant; |
524 |
|
|
525 |
if (rc->bquant_error[data->quant] >= 1.0) { |
if (rc->quant_error[s->type-1][data->quant] >= 1.0) { |
526 |
rc->bquant_error[data->quant] -= 1.0; |
rc->quant_error[s->type-1][data->quant] -= 1.0; |
527 |
data->quant++; |
data->quant++; |
528 |
|
} else if (rc->quant_error[s->type-1][data->quant] <= -1.0) { |
529 |
|
rc->quant_error[s->type-1][data->quant] += 1.0; |
530 |
|
data->quant--; |
531 |
} |
} |
|
}else{ |
|
|
rc->pquant_error[data->quant] += ((double)(s->quant * s->length) / desired) - data->quant; |
|
532 |
|
|
|
if (rc->pquant_error[data->quant] >= 1.0) { |
|
|
rc->pquant_error[data->quant] -= 1.0; |
|
|
++data->quant; |
|
|
} |
|
533 |
} |
} |
|
} |
|
|
|
|
|
/* cap to min/max quant */ |
|
534 |
|
|
535 |
if (data->quant < rc->param.min_quant[s->type-1]) { |
/* |
536 |
data->quant = rc->param.min_quant[s->type-1]; |
* Now we have a computed quant that is in the right quante range, with a |
537 |
}else if (data->quant > rc->param.max_quant[s->type-1]) { |
* possible +1 correction due to cumulated error. We can now safely clip |
538 |
data->quant = rc->param.max_quant[s->type-1]; |
* the quantizer again with user's quant ranges. "Safely" means the Rate |
539 |
|
* Control could learn more about this quantizer, this knowledge is useful |
540 |
|
* for future frames even if it this quantizer won't be really used atm, |
541 |
|
* that's why we don't perform this clipping earlier. |
542 |
|
*/ |
543 |
|
if (data->quant < data->min_quant[s->type-1]) { |
544 |
|
data->quant = data->min_quant[s->type-1]; |
545 |
|
} else if (data->quant > data->max_quant[s->type-1]) { |
546 |
|
data->quant = data->max_quant[s->type-1]; |
547 |
} |
} |
548 |
|
|
549 |
/* subsequent p/b frame quants can only be +- 2 */ |
/* |
550 |
|
* To avoid big quality jumps from frame to frame, we apply a "security" |
551 |
|
* rule that makes |last_quant - new_quant| <= 2. This rule only applies |
552 |
|
* to predicted frames (P and B) |
553 |
|
*/ |
554 |
if (s->type != XVID_TYPE_IVOP && rc->last_quant[s->type-1] && capped_to_max_framesize == 0) { |
if (s->type != XVID_TYPE_IVOP && rc->last_quant[s->type-1] && capped_to_max_framesize == 0) { |
555 |
|
|
556 |
if (data->quant > rc->last_quant[s->type-1] + 2) { |
if (data->quant > rc->last_quant[s->type-1] + 2) { |
557 |
data->quant = rc->last_quant[s->type-1] + 2; |
data->quant = rc->last_quant[s->type-1] + 2; |
558 |
DPRINTF(DPRINTF_RC, "p/b-frame quantizer prevented from rising too steeply"); |
DPRINTF(XVID_DEBUG_RC, |
559 |
|
"[%i] p/b-frame quantizer prevented from rising too steeply\n", |
560 |
|
data->frame_num); |
561 |
} |
} |
562 |
if (data->quant < rc->last_quant[s->type-1] - 2) { |
if (data->quant < rc->last_quant[s->type-1] - 2) { |
563 |
data->quant = rc->last_quant[s->type-1] - 2; |
data->quant = rc->last_quant[s->type-1] - 2; |
564 |
DPRINTF(DPRINTF_RC, "p/b-frame quantizer prevented from falling too steeply"); |
DPRINTF(XVID_DEBUG_RC, |
565 |
|
"[%i] p/b-frame quantizer prevented from falling too steeply\n", |
566 |
|
data->frame_num); |
567 |
} |
} |
568 |
} |
} |
569 |
|
|
570 |
if (capped_to_max_framesize == 0) { |
/* |
571 |
|
* We don't want to pollute the RC history results when our computed quant |
572 |
|
* has been computed from a capped frame size |
573 |
|
*/ |
574 |
|
if (capped_to_max_framesize == 0) |
575 |
rc->last_quant[s->type-1] = data->quant; |
rc->last_quant[s->type-1] = data->quant; |
576 |
} |
|
577 |
|
/* Force frame type */ |
578 |
|
data->type = s->type; |
579 |
|
|
580 |
return 0; |
return 0; |
581 |
} |
} |
582 |
|
|
583 |
|
/*---------------------------------------------------------------------------- |
584 |
|
*--------------------------------------------------------------------------*/ |
585 |
|
|
586 |
|
static int |
587 |
static int rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data) |
rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data) |
588 |
{ |
{ |
589 |
|
const char frame_type[4] = { 'i', 'p', 'b', 's'}; |
590 |
stat_t * s = &rc->stats[data->frame_num]; |
stat_t * s = &rc->stats[data->frame_num]; |
591 |
|
|
592 |
if (data->frame_num >= rc->num_frames) { |
/* Insufficent stats data */ |
593 |
/* insufficent stats data */ |
if (data->frame_num >= rc->num_frames) |
594 |
return 0; |
return 0; |
|
} |
|
595 |
|
|
596 |
rc->quant_count[data->quant]++; |
rc->quant_count[data->quant]++; |
597 |
|
|
601 |
rc->overflow += rc->KFoverflow; |
rc->overflow += rc->KFoverflow; |
602 |
rc->KFoverflow = s->desired_length - data->length; |
rc->KFoverflow = s->desired_length - data->length; |
603 |
|
|
604 |
if (kfdiff > 1) { // non-consecutive keyframes |
if (kfdiff > 1) { /* non-consecutive keyframes */ |
605 |
rc->KFoverflow_partial = rc->KFoverflow / (kfdiff - 1); |
rc->KFoverflow_partial = rc->KFoverflow / (kfdiff - 1); |
606 |
}else{ // consecutive keyframes |
}else{ /* consecutive keyframes */ |
607 |
rc->overflow += rc->KFoverflow; |
rc->overflow += rc->KFoverflow; |
608 |
rc->KFoverflow = 0; |
rc->KFoverflow = 0; |
609 |
rc->KFoverflow_partial = 0; |
rc->KFoverflow_partial = 0; |
610 |
} |
} |
611 |
rc->KF_idx++; |
rc->KF_idx++; |
612 |
}else{ |
}else{ |
613 |
// distribute part of the keyframe overflow |
/* distribute part of the keyframe overflow */ |
614 |
rc->overflow += s->desired_length - data->length + rc->KFoverflow_partial; |
rc->overflow += s->desired_length - data->length + rc->KFoverflow_partial; |
615 |
rc->KFoverflow -= rc->KFoverflow_partial; |
rc->KFoverflow -= rc->KFoverflow_partial; |
616 |
} |
} |
617 |
|
|
618 |
printf("[%i] quant:%i stats1:%i scaled:%i actual:%i overflow:%i\n", |
DPRINTF(XVID_DEBUG_RC, "[%i] type:%c quant:%i stats1:%i scaled:%i actual:%i desired:%d overflow:%i\n", |
619 |
data->frame_num, |
data->frame_num, |
620 |
|
frame_type[data->type-1], |
621 |
data->quant, |
data->quant, |
622 |
s->length, |
s->length, |
623 |
s->scaled_length, |
s->scaled_length, |
624 |
data->length, |
data->length, |
625 |
|
s->desired_length, |
626 |
rc->overflow); |
rc->overflow); |
627 |
|
|
628 |
return(0); |
return(0); |
629 |
} |
} |
630 |
|
|
631 |
|
/***************************************************************************** |
632 |
|
* Helper functions definition |
633 |
|
****************************************************************************/ |
634 |
|
|
635 |
|
#define BUF_SZ 1024 |
636 |
|
#define MAX_COLS 5 |
637 |
|
|
638 |
int xvid_plugin_2pass2(void * handle, int opt, void * param1, void * param2) |
/* open stats file, and count num frames */ |
639 |
|
static int |
640 |
|
det_stats_length(rc_2pass2_t * rc, char * filename) |
641 |
{ |
{ |
642 |
switch(opt) |
FILE * f; |
643 |
|
int n, ignore; |
644 |
|
char type; |
645 |
|
|
646 |
|
rc->num_frames = 0; |
647 |
|
rc->num_keyframes = 0; |
648 |
|
|
649 |
|
if ((f = fopen(filename, "rt")) == NULL) |
650 |
|
return 0; |
651 |
|
|
652 |
|
while((n = fscanf(f, "%c %d %d %d %d %d %d\n", |
653 |
|
&type, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore)) != EOF) { |
654 |
|
if (type == 'i') { |
655 |
|
rc->num_frames++; |
656 |
|
rc->num_keyframes++; |
657 |
|
}else if (type == 'p' || type == 'b' || type == 's') { |
658 |
|
rc->num_frames++; |
659 |
|
} |
660 |
|
} |
661 |
|
|
662 |
|
fclose(f); |
663 |
|
|
664 |
|
return 1; |
665 |
|
} |
666 |
|
|
667 |
|
/* open stats file(s) and read into rc->stats array */ |
668 |
|
|
669 |
|
static int |
670 |
|
load_stats(rc_2pass2_t *rc, char * filename) |
671 |
{ |
{ |
672 |
case XVID_PLG_INFO : |
FILE * f; |
673 |
|
int i, not_scaled; |
674 |
|
|
675 |
|
|
676 |
|
if ((f = fopen(filename, "rt"))==NULL) |
677 |
return 0; |
return 0; |
678 |
|
|
679 |
case XVID_PLG_CREATE : |
i = 0; |
680 |
return rc_2pass2_create((xvid_plg_create_t*)param1, param2); |
not_scaled = 0; |
681 |
|
while(i < rc->num_frames) { |
682 |
|
stat_t * s = &rc->stats[i]; |
683 |
|
int n; |
684 |
|
char type; |
685 |
|
|
686 |
case XVID_PLG_DESTROY : |
s->scaled_length = 0; |
687 |
return rc_2pass2_destroy((rc_2pass2_t*)handle, (xvid_plg_destroy_t*)param1); |
n = fscanf(f, "%c %d %d %d %d %d %d\n", &type, &s->quant, &s->blks[0], &s->blks[1], &s->blks[2], &s->length, &s->scaled_length); |
688 |
|
if (n == EOF) break; |
689 |
|
if (n < 7) { |
690 |
|
not_scaled = 1; |
691 |
|
} |
692 |
|
|
693 |
case XVID_PLG_BEFORE : |
if (type == 'i') { |
694 |
return rc_2pass2_before((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); |
s->type = XVID_TYPE_IVOP; |
695 |
|
}else if (type == 'p' || type == 's') { |
696 |
|
s->type = XVID_TYPE_PVOP; |
697 |
|
}else if (type == 'b') { |
698 |
|
s->type = XVID_TYPE_BVOP; |
699 |
|
}else{ /* unknown type */ |
700 |
|
DPRINTF(XVID_DEBUG_RC, "WARNING: unknown stats frame type, assuming pvop\n"); |
701 |
|
s->type = XVID_TYPE_PVOP; |
702 |
|
} |
703 |
|
|
704 |
case XVID_PLG_AFTER : |
i++; |
|
return rc_2pass2_after((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); |
|
705 |
} |
} |
706 |
|
|
707 |
return XVID_ERR_FAIL; |
rc->num_frames = i; |
708 |
|
|
709 |
|
fclose(f); |
710 |
|
|
711 |
|
return 1; |
712 |
|
} |
713 |
|
|
714 |
|
#if 0 |
715 |
|
static void print_stats(rc_2pass2_t * rc) |
716 |
|
{ |
717 |
|
int i; |
718 |
|
DPRINTF(XVID_DEBUG_RC, "type quant length scaled_length\n"); |
719 |
|
for (i = 0; i < rc->num_frames; i++) { |
720 |
|
stat_t * s = &rc->stats[i]; |
721 |
|
DPRINTF(XVID_DEBUG_RC, "%d %d %d %d\n", s->type, s->quant, s->length, s->scaled_length); |
722 |
|
} |
723 |
|
} |
724 |
|
#endif |
725 |
|
|
726 |
|
/* pre-process the statistics data |
727 |
|
- for each type, count, tot_length, min_length, max_length |
728 |
|
- set keyframes_locations |
729 |
|
*/ |
730 |
|
|
731 |
|
static void |
732 |
|
pre_process0(rc_2pass2_t * rc) |
733 |
|
{ |
734 |
|
int i,j; |
735 |
|
|
736 |
|
/* |
737 |
|
* *rc fields initialization |
738 |
|
* NB: INT_MAX and INT_MIN are used in order to be immediately replaced |
739 |
|
* with real values of the 1pass |
740 |
|
*/ |
741 |
|
for (i=0; i<3; i++) { |
742 |
|
rc->count[i]=0; |
743 |
|
rc->tot_length[i] = 0; |
744 |
|
rc->min_length[i] = INT_MAX; |
745 |
|
} |
746 |
|
|
747 |
|
rc->max_length = INT_MIN; |
748 |
|
|
749 |
|
/* |
750 |
|
* Loop through all frames and find/compute all the stuff this function |
751 |
|
* is supposed to do |
752 |
|
*/ |
753 |
|
for (i=j=0; i<rc->num_frames; i++) { |
754 |
|
stat_t * s = &rc->stats[i]; |
755 |
|
|
756 |
|
rc->count[s->type-1]++; |
757 |
|
rc->tot_length[s->type-1] += s->length; |
758 |
|
|
759 |
|
if (s->length < rc->min_length[s->type-1]) { |
760 |
|
rc->min_length[s->type-1] = s->length; |
761 |
|
} |
762 |
|
|
763 |
|
if (s->length > rc->max_length) { |
764 |
|
rc->max_length = s->length; |
765 |
|
} |
766 |
|
|
767 |
|
if (s->type == XVID_TYPE_IVOP) { |
768 |
|
rc->keyframe_locations[j] = i; |
769 |
|
j++; |
770 |
|
} |
771 |
|
} |
772 |
|
|
773 |
|
/* |
774 |
|
* Nota Bene: |
775 |
|
* The "per sequence" overflow system considers a natural sequence to be |
776 |
|
* formed by all frames between two iframes, so if we want to make sure |
777 |
|
* the system does not go nuts during last sequence, we force the last |
778 |
|
* frame to appear in the keyframe locations array. |
779 |
|
*/ |
780 |
|
rc->keyframe_locations[j] = i; |
781 |
|
|
782 |
|
DPRINTF(XVID_DEBUG_RC, "Min 1st pass IFrame length: %d\n", rc->min_length[0]); |
783 |
|
DPRINTF(XVID_DEBUG_RC, "Min 1st pass PFrame length: %d\n", rc->min_length[1]); |
784 |
|
DPRINTF(XVID_DEBUG_RC, "Min 1st pass BFrame length: %d\n", rc->min_length[2]); |
785 |
|
} |
786 |
|
|
787 |
|
/* calculate zone weight "center" */ |
788 |
|
|
789 |
|
static void |
790 |
|
zone_process(rc_2pass2_t *rc, const xvid_plg_create_t * create) |
791 |
|
{ |
792 |
|
int i,j; |
793 |
|
int n = 0; |
794 |
|
|
795 |
|
rc->avg_weight = 0.0; |
796 |
|
rc->tot_quant = 0; |
797 |
|
|
798 |
|
|
799 |
|
if (create->num_zones == 0) { |
800 |
|
for (j = 0; j < rc->num_frames; j++) { |
801 |
|
rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; |
802 |
|
rc->stats[j].weight = 1.0; |
803 |
|
} |
804 |
|
rc->avg_weight += rc->num_frames * 1.0; |
805 |
|
n += rc->num_frames; |
806 |
|
} |
807 |
|
|
808 |
|
|
809 |
|
for(i=0; i < create->num_zones; i++) { |
810 |
|
|
811 |
|
int next = (i+1<create->num_zones) ? create->zones[i+1].frame : rc->num_frames; |
812 |
|
|
813 |
|
if (i==0 && create->zones[i].frame > 0) { |
814 |
|
for (j = 0; j < create->zones[i].frame && j < rc->num_frames; j++) { |
815 |
|
rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; |
816 |
|
rc->stats[j].weight = 1.0; |
817 |
|
} |
818 |
|
rc->avg_weight += create->zones[i].frame * 1.0; |
819 |
|
n += create->zones[i].frame; |
820 |
|
} |
821 |
|
|
822 |
|
if (create->zones[i].mode == XVID_ZONE_WEIGHT) { |
823 |
|
for (j = create->zones[i].frame; j < next && j < rc->num_frames; j++ ) { |
824 |
|
rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; |
825 |
|
rc->stats[j].weight = (double)create->zones[i].increment / (double)create->zones[i].base; |
826 |
|
} |
827 |
|
next -= create->zones[i].frame; |
828 |
|
rc->avg_weight += (double)(next * create->zones[i].increment) / (double)create->zones[i].base; |
829 |
|
n += next; |
830 |
|
}else{ /* XVID_ZONE_QUANT */ |
831 |
|
for (j = create->zones[i].frame; j < next && j < rc->num_frames; j++ ) { |
832 |
|
rc->stats[j].zone_mode = XVID_ZONE_QUANT; |
833 |
|
rc->stats[j].weight = (double)create->zones[i].increment / (double)create->zones[i].base; |
834 |
|
rc->tot_quant += rc->stats[j].length; |
835 |
|
} |
836 |
|
} |
837 |
|
} |
838 |
|
rc->avg_weight = n>0 ? rc->avg_weight/n : 1.0; |
839 |
|
|
840 |
|
DPRINTF(XVID_DEBUG_RC, "center_weight: %f (for %i frames); fixed_bytes: %i\n", rc->avg_weight, n, rc->tot_quant); |
841 |
|
} |
842 |
|
|
843 |
|
|
844 |
|
/* scale the curve */ |
845 |
|
|
846 |
|
static void |
847 |
|
internal_scale(rc_2pass2_t *rc) |
848 |
|
{ |
849 |
|
int64_t target = rc->target - rc->tot_quant; |
850 |
|
int64_t pass1_length = rc->tot_length[0] + rc->tot_length[1] + rc->tot_length[2] - rc->tot_quant; |
851 |
|
double scaler; |
852 |
|
int i, num_MBs; |
853 |
|
|
854 |
|
/* Let's compute a linear scaler in order to perform curve scaling */ |
855 |
|
scaler = (double)target / (double)pass1_length; |
856 |
|
|
857 |
|
if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { |
858 |
|
DPRINTF(XVID_DEBUG_RC, "WARNING: Undersize detected\n"); |
859 |
|
scaler = 1.0; |
860 |
|
} |
861 |
|
|
862 |
|
DPRINTF(XVID_DEBUG_RC, |
863 |
|
"Before correction: target=%i, tot_length=%i, scaler=%f\n", |
864 |
|
(int)target, (int)pass1_length, scaler); |
865 |
|
|
866 |
|
/* |
867 |
|
* Compute min frame lengths (for each frame type) according to the number |
868 |
|
* of MBs. We sum all blocks count from frame 0 (should be an IFrame, so |
869 |
|
* blocks[0] should be enough) to know how many MBs there are. |
870 |
|
* |
871 |
|
* We compare these hardcoded values with observed values in first pass |
872 |
|
* (determined in pre_process0).Then we keep the real minimum. |
873 |
|
*/ |
874 |
|
num_MBs = rc->stats[0].blks[0] + rc->stats[0].blks[1] + rc->stats[0].blks[2]; |
875 |
|
|
876 |
|
if(rc->min_length[0] > ((num_MBs*22) + 240) / 8) |
877 |
|
rc->min_length[0] = ((num_MBs*22) + 240) / 8; |
878 |
|
|
879 |
|
if(rc->min_length[1] > ((num_MBs) + 88) / 8) |
880 |
|
rc->min_length[1] = ((num_MBs) + 88) / 8; |
881 |
|
|
882 |
|
if(rc->min_length[2] > 8) |
883 |
|
rc->min_length[2] = 8; |
884 |
|
|
885 |
|
/* |
886 |
|
* Perform an initial scale pass. |
887 |
|
* If a frame size is scaled underneath our hardcoded minimums, then we |
888 |
|
* force the frame size to the minimum, and deduct the original & scaled |
889 |
|
* frame length from the original and target total lengths |
890 |
|
*/ |
891 |
|
for (i=0; i<rc->num_frames; i++) { |
892 |
|
stat_t * s = &rc->stats[i]; |
893 |
|
int len; |
894 |
|
|
895 |
|
if (s->zone_mode == XVID_ZONE_QUANT) { |
896 |
|
s->scaled_length = s->length; |
897 |
|
continue; |
898 |
|
} |
899 |
|
|
900 |
|
/* Compute the scaled length */ |
901 |
|
len = (int)((double)s->length * scaler * s->weight / rc->avg_weight); |
902 |
|
|
903 |
|
/* Compare with the computed minimum */ |
904 |
|
if (len < rc->min_length[s->type-1]) { |
905 |
|
/* force frame size to our computed minimum */ |
906 |
|
s->scaled_length = rc->min_length[s->type-1]; |
907 |
|
target -= s->scaled_length; |
908 |
|
pass1_length -= s->length; |
909 |
|
} else { |
910 |
|
/* Do nothing for now, we'll scale this later */ |
911 |
|
s->scaled_length = 0; |
912 |
|
} |
913 |
|
} |
914 |
|
|
915 |
|
/* Correct the scaler for all non forced frames */ |
916 |
|
scaler = (double)target / (double)pass1_length; |
917 |
|
|
918 |
|
/* Detect undersizing */ |
919 |
|
if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { |
920 |
|
DPRINTF(XVID_DEBUG_RC, "WARNING: Undersize detected\n"); |
921 |
|
scaler = 1.0; |
922 |
|
} |
923 |
|
|
924 |
|
DPRINTF(XVID_DEBUG_RC, |
925 |
|
"After correction: target=%i, tot_length=%i, scaler=%f\n", |
926 |
|
(int)target, (int)pass1_length, scaler); |
927 |
|
|
928 |
|
/* Do another pass with the new scaler */ |
929 |
|
for (i=0; i<rc->num_frames; i++) { |
930 |
|
stat_t * s = &rc->stats[i]; |
931 |
|
|
932 |
|
/* Ignore frame with forced frame sizes */ |
933 |
|
if (s->scaled_length == 0) |
934 |
|
s->scaled_length = (int)((double)s->length * scaler * s->weight / rc->avg_weight); |
935 |
|
} |
936 |
|
} |
937 |
|
|
938 |
|
static void |
939 |
|
pre_process1(rc_2pass2_t * rc) |
940 |
|
{ |
941 |
|
int i; |
942 |
|
double total1, total2; |
943 |
|
uint64_t ivop_boost_total; |
944 |
|
|
945 |
|
ivop_boost_total = 0; |
946 |
|
rc->curve_comp_error = 0; |
947 |
|
|
948 |
|
for (i=0; i<3; i++) { |
949 |
|
rc->tot_scaled_length[i] = 0; |
950 |
|
} |
951 |
|
|
952 |
|
for (i=0; i<rc->num_frames; i++) { |
953 |
|
stat_t * s = &rc->stats[i]; |
954 |
|
|
955 |
|
rc->tot_scaled_length[s->type-1] += s->scaled_length; |
956 |
|
|
957 |
|
if (s->type == XVID_TYPE_IVOP) { |
958 |
|
ivop_boost_total += s->scaled_length * rc->param.keyframe_boost / 100; |
959 |
|
} |
960 |
|
} |
961 |
|
|
962 |
|
rc->movie_curve = ((double)(rc->tot_scaled_length[XVID_TYPE_PVOP-1] + rc->tot_scaled_length[XVID_TYPE_BVOP-1] + ivop_boost_total) / |
963 |
|
(rc->tot_scaled_length[XVID_TYPE_PVOP-1] + rc->tot_scaled_length[XVID_TYPE_BVOP-1])); |
964 |
|
|
965 |
|
for(i=0; i<3; i++) { |
966 |
|
if (rc->count[i] == 0 || rc->movie_curve == 0) { |
967 |
|
rc->avg_length[i] = 1; |
968 |
|
}else{ |
969 |
|
rc->avg_length[i] = rc->tot_scaled_length[i] / rc->count[i] / rc->movie_curve; |
970 |
|
} |
971 |
|
} |
972 |
|
|
973 |
|
/* --- */ |
974 |
|
|
975 |
|
total1=total2=0; |
976 |
|
|
977 |
|
for (i=0; i<rc->num_frames; i++) { |
978 |
|
stat_t * s = &rc->stats[i]; |
979 |
|
|
980 |
|
if (s->type != XVID_TYPE_IVOP) { |
981 |
|
double dbytes,dbytes2; |
982 |
|
|
983 |
|
dbytes = s->scaled_length / rc->movie_curve; |
984 |
|
dbytes2 = 0; /* XXX: warning */ |
985 |
|
total1 += dbytes; |
986 |
|
|
987 |
|
if (dbytes > rc->avg_length[s->type-1]) { |
988 |
|
dbytes2=((double)dbytes + (rc->avg_length[s->type-1] - dbytes) * rc->param.curve_compression_high / 100.0); |
989 |
|
} else { |
990 |
|
dbytes2 = ((double)dbytes + (rc->avg_length[s->type-1] - dbytes) * rc->param.curve_compression_low / 100.0); |
991 |
|
} |
992 |
|
|
993 |
|
if (dbytes2 < rc->min_length[s->type-1]) |
994 |
|
dbytes2 = rc->min_length[s->type-1]; |
995 |
|
|
996 |
|
total2 += dbytes2; |
997 |
|
} |
998 |
|
} |
999 |
|
|
1000 |
|
rc->curve_comp_scale = total1 / total2; |
1001 |
|
|
1002 |
|
DPRINTF(XVID_DEBUG_RC, "middle frame size for asymmetric curve compression: pframe%d bframe:%d\n", |
1003 |
|
(int)(rc->avg_length[XVID_TYPE_PVOP-1] * rc->curve_comp_scale), |
1004 |
|
(int)(rc->avg_length[XVID_TYPE_BVOP-1] * rc->curve_comp_scale)); |
1005 |
|
|
1006 |
|
rc->overflow = 0; |
1007 |
|
rc->KFoverflow = 0; |
1008 |
|
rc->KFoverflow_partial = 0; |
1009 |
|
rc->KF_idx = 1; |
1010 |
} |
} |