--- plugin_2pass2.c 2003/03/25 10:58:33 1.1 +++ plugin_2pass2.c 2003/05/17 13:36:38 1.1.2.5 @@ -0,0 +1,1042 @@ +/****************************************************************************** + * + * XviD Bit Rate Controller Library + * - VBR 2 pass bitrate controler implementation - + * + * Copyright (C) 2002 Edouard Gomez + * + * The curve treatment algorithm is the one implemented by Foxer and + * Dirk Knop for the XviD vfw dynamic library. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * $Id: plugin_2pass2.c,v 1.1.2.5 2003/05/17 13:36:38 suxen_drol Exp $ + * + *****************************************************************************/ + +#include +#include + +#define RAD2DEG 57.295779513082320876798154814105 +#define DEG2RAD 0.017453292519943295769236907684886 + +#include "../xvid.h" +#include "../image/image.h" + +typedef struct { + int type; /* first pass type */ + int quant; /* first pass quant */ + int blks[3]; /* k,m,y blks */ + int length; /* first pass length */ + int scaled_length; /* scaled length */ + int desired_length; /* desired length; calcuated during encoding */ + + int zone_mode; /* XVID_ZONE_xxx */ + double weight; +} stat_t; + + + + +/* context struct */ +typedef struct +{ + xvid_plugin_2pass2_t param; + + /* constant statistical data */ + int num_frames; + int num_keyframes; + uint64_t target; /* target filesize */ + + int count[3]; /* count of each frame types */ + uint64_t tot_length[3]; /* total length of each frame types */ + double avg_length[3]; /* avg */ + int min_length[3]; /* min frame length of each frame types */ + uint64_t tot_scaled_length[3]; /* total scaled length of each frame type */ + int max_length; /* max frame size */ + + /* zone statistical data */ + double avg_weight; /* average weight */ + int64_t tot_quant; /* total length used by XVID_ZONE_QUANT zones */ + + + double curve_comp_scale; + double movie_curve; + + double alt_curve_low; + double alt_curve_high; + double alt_curve_low_diff; + double alt_curve_high_diff; + double alt_curve_curve_bias_bonus; + double alt_curve_mid_qual; + double alt_curve_qual_dev; + + /* dynamic */ + + int * keyframe_locations; + stat_t * stats; + + double pquant_error[32]; + double bquant_error[32]; + int quant_count[32]; + int last_quant[3]; + + double curve_comp_error; + int overflow; + int KFoverflow; + int KFoverflow_partial; + int KF_idx; + + double fq_error; +} rc_2pass2_t; + + + +#define BUF_SZ 1024 +#define MAX_COLS 5 + + +/* open stats file, and count num frames */ + +static int det_stats_length(rc_2pass2_t * rc, char * filename) +{ + FILE * f; + int n, ignore; + char type; + + rc->num_frames = 0; + rc->num_keyframes = 0; + + if ((f = fopen(filename, "rt")) == NULL) + return 0; + + while((n = fscanf(f, "%c %d %d %d %d %d %d\n", + &type, &ignore, &ignore, &ignore, &ignore, &ignore, &ignore)) != EOF) { + if (type == 'i') { + rc->num_frames++; + rc->num_keyframes++; + }else if (type == 'p' || type == 'b' || type == 's') { + rc->num_frames++; + } + } + + fclose(f); + + return 1; +} + + + +/* open stats file(s) and read into rc->stats array */ + +static int load_stats(rc_2pass2_t *rc, char * filename) +{ + FILE * f; + int i, not_scaled; + + + if ((f = fopen(filename, "rt"))==NULL) + return 0; + + i = 0; + not_scaled = 0; + while(i < rc->num_frames) { + stat_t * s = &rc->stats[i]; + int n; + char type; + + s->scaled_length = 0; + 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); + if (n == EOF) break; + if (n < 7) { + not_scaled = 1; + } + + if (type == 'i') { + s->type = XVID_TYPE_IVOP; + }else if (type == 'p' || type == 's') { + s->type = XVID_TYPE_PVOP; + }else if (type == 'b') { + s->type = XVID_TYPE_BVOP; + }else{ /* unknown type */ + DPRINTF(XVID_DEBUG_RC, "unknown stats frame type; assuming pvop"); + s->type = XVID_TYPE_PVOP; + } + + i++; + } + rc->num_frames = i; + + fclose(f); + + return 1; +} + + + +static void print_stats(rc_2pass2_t * rc) +{ + int i; + for (i = 0; i < rc->num_frames; i++) { + stat_t * s = &rc->stats[i]; + DPRINTF(XVID_DEBUG_RC, "%i %i %i %i\n", s->type, s->quant, s->length, s->scaled_length); + + } +} + + +/* pre-process the statistics data + - for each type, count, tot_length, min_length, max_length + - set keyframes_locations +*/ + +void pre_process0(rc_2pass2_t * rc) +{ + int i,j; + + for (i=0; i<3; i++) { + rc->count[i]=0; + rc->tot_length[i] = 0; + rc->last_quant[i] = 0; + } + + for (i=j=0; inum_frames; i++) { + stat_t * s = &rc->stats[i]; + + rc->count[s->type-1]++; + rc->tot_length[s->type-1] += s->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) { + rc->keyframe_locations[j] = i; + j++; + } + } + rc->keyframe_locations[j] = i; +} + + +/* calculate zone weight "center" */ + +static void zone_process(rc_2pass2_t *rc, const xvid_plg_create_t * create) +{ + int i,j; + int n = 0; + + rc->avg_weight = 0.0; + rc->tot_quant = 0; + + + if (create->num_zones == 0) { + for (j = 0; j < rc->num_frames; j++) { + rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; + rc->stats[j].weight = 1.0; + } + rc->avg_weight += rc->num_frames * 1.0; + n += rc->num_frames; + } + + + for(i=0; i < create->num_zones; i++) { + + int next = (i+1num_zones) ? create->zones[i+1].frame : rc->num_frames; + + if (i==0 && create->zones[i].frame > 0) { + for (j = 0; j < create->zones[i].frame && j < rc->num_frames; j++) { + rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; + rc->stats[j].weight = 1.0; + } + rc->avg_weight += create->zones[i].frame * 1.0; + n += create->zones[i].frame; + } + + if (create->zones[i].mode == XVID_ZONE_WEIGHT) { + for (j = create->zones[i].frame; j < next && j < rc->num_frames; j++ ) { + rc->stats[j].zone_mode = XVID_ZONE_WEIGHT; + rc->stats[j].weight = (double)create->zones[i].increment / (double)create->zones[i].base; + } + next -= create->zones[i].frame; + rc->avg_weight += (double)(next * create->zones[i].increment) / (double)create->zones[i].base; + n += next; + }else{ // XVID_ZONE_QUANT + for (j = create->zones[i].frame; j < next && j < rc->num_frames; j++ ) { + rc->stats[j].zone_mode = XVID_ZONE_QUANT; + rc->stats[j].weight = (double)create->zones[i].increment / (double)create->zones[i].base; + rc->tot_quant += rc->stats[j].length; + } + } + } + rc->avg_weight = n>0 ? rc->avg_weight/n : 1.0; + + DPRINTF(XVID_DEBUG_RC, "center_weight: %f (for %i frames); fixed_bytes: %i\n", rc->avg_weight, n, rc->tot_quant); +} + + +/* scale the curve */ + +static void internal_scale(rc_2pass2_t *rc) +{ + int64_t target = rc->target - rc->tot_quant; + int64_t pass1_length = rc->tot_length[0] + rc->tot_length[1] + rc->tot_length[2] - rc->tot_quant; + int min_size[3]; + double scaler; + int i; + + + /* perform an initial scale pass. + if a frame size is scaled underneath our hardcoded minimums, then we force the + frame size to the minimum, and deduct the original & scaled frmae length from the + original and target total lengths */ + + min_size[0] = ((rc->stats[0].blks[0]*22) + 240) / 8; + min_size[1] = (rc->stats[0].blks[0] + 88) / 8; + min_size[2] = 8; + + scaler = (double)target / (double)pass1_length; + + if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { + DPRINTF(XVID_DEBUG_RC, "undersize warning\n"); + scaler = 1.0; + } + + DPRINTF(XVID_DEBUG_RC, "target=%i, tot_length=%i, scaler=%f\n", (int)target, (int)pass1_length, scaler); + + for (i=0; inum_frames; i++) { + stat_t * s = &rc->stats[i]; + int len; + + if (s->zone_mode == XVID_ZONE_QUANT) { + s->scaled_length = s->length; + }else { + len = (int)((double)s->length * scaler * s->weight / rc->avg_weight); + if (len < min_size[s->type]) { /* force frame size */ + s->scaled_length = min_size[s->type]; + target -= s->scaled_length; + pass1_length -= s->length; + }else{ + s->scaled_length = 0; + } + } + } + + scaler = (double)target / (double)pass1_length; + if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { + DPRINTF(XVID_DEBUG_RC,"undersize warning\n"); + scaler = 1.0; + } + + DPRINTF(XVID_DEBUG_RC, "target=%i, tot_length=%i, scaler=%f\n", (int)target, (int)pass1_length, scaler); + + for (i=0; inum_frames; i++) { + stat_t * s = &rc->stats[i]; + + if (s->scaled_length==0) { /* ignore frame with forced frame sizes */ + s->scaled_length = (int)((double)s->length * scaler * s->weight / rc->avg_weight); + } + } +} + + + + +void pre_process1(rc_2pass2_t * rc) +{ + int i; + double total1, total2; + uint64_t ivop_boost_total; + + ivop_boost_total = 0; + rc->curve_comp_error = 0; + + for (i=0; i<3; i++) { + rc->tot_scaled_length[i] = 0; + } + + for (i=0; inum_frames; i++) { + stat_t * s = &rc->stats[i]; + + rc->tot_scaled_length[s->type-1] += s->scaled_length; + + if (s->type == XVID_TYPE_IVOP) { + ivop_boost_total += s->scaled_length * rc->param.keyframe_boost / 100; + } + } + + 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])); + + for(i=0; i<3; i++) { + if (rc->count[i] == 0 || rc->movie_curve == 0) { + rc->avg_length[i] = 1; + }else{ + rc->avg_length[i] = rc->tot_scaled_length[i] / rc->count[i] / rc->movie_curve; + } + } + + /* 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=0; inum_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) { + DPRINTF(XVID_DEBUG_RC, "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 */ + + DPRINTF(XVID_DEBUG_RC, "avg scaled framesize:%i", (int)rc->avg_length[XVID_TYPE_PVOP-1]); + DPRINTF(XVID_DEBUG_RC, "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; + DPRINTF(XVID_DEBUG_RC, "quant:%i threshold at %i : %i percent", newquant, i, percent); + } + } + } + + } + + rc->overflow = 0; + rc->KFoverflow = 0; + rc->KFoverflow_partial = 0; + rc->KF_idx = 1; +} + + + + +static int rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t ** handle) +{ + xvid_plugin_2pass2_t * param = (xvid_plugin_2pass2_t *)create->param; + rc_2pass2_t * rc; + int i; + + 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.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->filename)){ + DPRINTF(XVID_DEBUG_RC,"fopen %s failed\n", param->filename); + free(rc); + return XVID_ERR_FAIL; + } + + if ((rc->stats = malloc(rc->num_frames * sizeof(stat_t))) == NULL) { + free(rc); + return XVID_ERR_MEMORY; + } + + /* XXX: do we need an addition location */ + if ((rc->keyframe_locations = malloc((rc->num_keyframes + 1) * sizeof(int))) == NULL) { + free(rc->stats); + free(rc); + return XVID_ERR_MEMORY; + } + + if (!load_stats(rc, param->filename)) { + DPRINTF(XVID_DEBUG_RC,"fopen %s failed\n", param->filename); + free(rc->keyframe_locations); + free(rc->stats); + free(rc); + return XVID_ERR_FAIL; + } + + /* pre-process our stats */ + + if (rc->num_frames < create->fbase/create->fincr) { + rc->target = rc->param.bitrate / 8; /* one second */ + }else{ + rc->target = (rc->param.bitrate * rc->num_frames * create->fincr) / (create->fbase * 8); + } + + DPRINTF(XVID_DEBUG_RC, "rc->target : %i\n", rc->target); + + rc->target -= rc->num_frames*24; /* avi file header */ + + + pre_process0(rc); + if (rc->param.bitrate) { + zone_process(rc, create); + internal_scale(rc); + }else{ + /* external scaler: ignore zone */ + for (i=0;inum_frames;i++) { + rc->stats[i].zone_mode = XVID_ZONE_WEIGHT; + rc->stats[i].weight = 1.0; + } + rc->avg_weight = 1.0; + rc->tot_quant = 0; + } + pre_process1(rc); + + for (i=0; i<32;i++) { + rc->pquant_error[i] = 0; + rc->bquant_error[i] = 0; + rc->quant_count[i] = 0; + } + + rc->fq_error = 0; + + *handle = rc; + return(0); +} + + +static int rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy) +{ + free(rc->keyframe_locations); + free(rc->stats); + free(rc); + return(0); +} + + + +static int rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data) +{ + stat_t * s = &rc->stats[data->frame_num]; + int overflow; + int desired; + double dbytes; + double curve_temp; + int capped_to_max_framesize = 0; + + if (data->quant <= 0) { + + if (s->zone_mode == XVID_ZONE_QUANT) { + + rc->fq_error += s->weight; + data->quant = (int)rc->fq_error; + rc->fq_error -= data->quant; + + s->desired_length = s->length; + + }else { /* XVID_ZONE_WEIGHT */ + + if (data->frame_num >= rc->num_frames) { + /* insufficent stats data */ + return 0; + } + + overflow = rc->overflow / 8; /* XXX: why by 8 */ + + if (s->type == XVID_TYPE_IVOP) { /* XXX: why */ + overflow = 0; + } + + desired = s->scaled_length; + + dbytes = desired; + if (s->type == XVID_TYPE_IVOP) { + dbytes += desired * rc->param.keyframe_boost / 100; + } + dbytes /= rc->movie_curve; + + if (s->type == XVID_TYPE_BVOP) { + dbytes *= rc->avg_length[XVID_TYPE_PVOP-1] / rc->avg_length[XVID_TYPE_BVOP-1]; + } + + if (rc->param.payback_method == XVID_PAYBACK_BIAS) { + desired =(int)(rc->curve_comp_error / rc->param.bitrate_payback_delay); + }else{ + //printf("desired=%i, dbytes=%i\n", desired,dbytes); + desired = (int)(rc->curve_comp_error * dbytes / + rc->avg_length[XVID_TYPE_PVOP-1] / rc->param.bitrate_payback_delay); + //printf("desired=%i\n", desired); + + if (labs(desired) > fabs(rc->curve_comp_error)) { + desired = (int)rc->curve_comp_error; + } + } + + rc->curve_comp_error -= desired; + + /* alt curve */ + + curve_temp = 0; /* XXX: warning */ + + 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) { + + curve_temp = rc->curve_comp_scale; + if (dbytes > rc->avg_length[XVID_TYPE_PVOP-1]) { + curve_temp *= ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-1] - dbytes) * rc->param.curve_compression_high / 100.0); + } else { + curve_temp *= ((double)dbytes + (rc->avg_length[XVID_TYPE_PVOP-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]; + } + + 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; + } + + + if (desired > s->length) { /* if desired length exceeds the pass1 length.. */ + rc->curve_comp_error += desired - s->length; + desired = s->length; + }else{ + if (desired < rc->min_length[s->type-1]) { + if (s->type == XVID_TYPE_IVOP){ + rc->curve_comp_error -= rc->min_length[XVID_TYPE_IVOP-1] - desired; + } + desired = rc->min_length[s->type-1]; + } + } + + s->desired_length = desired; + + + /* if this keyframe is too close to the next, reduce it's byte allotment + XXX: why do we do this after setting the desired length */ + + if (s->type == XVID_TYPE_IVOP) { + int KFdistance = rc->keyframe_locations[rc->KF_idx] - rc->keyframe_locations[rc->KF_idx - 1]; + + if (KFdistance < rc->param.kftreshold) { + + KFdistance = KFdistance - rc->param.min_key_interval; + + if (KFdistance >= 0) { + int KF_min_size; + + KF_min_size = desired * (100 - rc->param.kfreduction) / 100; + if (KF_min_size < 1) + KF_min_size = 1; + + desired = KF_min_size + (desired - KF_min_size) * KFdistance / + (rc->param.kftreshold - rc->param.min_key_interval); + + if (desired < 1) + desired = 1; + } + } + } + + overflow = (int)((double)overflow * desired / rc->avg_length[XVID_TYPE_PVOP-1]); + + // Foxer: reign in overflow with huge frames + if (labs(overflow) > labs(rc->overflow)) { + overflow = rc->overflow; + } + + // Foxer: make sure overflow doesn't run away + + if (overflow > desired * rc->param.max_overflow_improvement / 100) { + desired += (overflow <= desired) ? desired * rc->param.max_overflow_improvement / 100 : + overflow * rc->param.max_overflow_improvement / 100; + }else if (overflow < desired * rc->param.max_overflow_degradation / -100){ + desired += desired * rc->param.max_overflow_degradation / -100; + }else{ + desired += overflow; + } + + if (desired > rc->max_length) { + capped_to_max_framesize = 1; + desired = rc->max_length; + } + + // make sure to not scale below the minimum framesize + if (desired < rc->min_length[s->type-1]) { + desired = rc->min_length[s->type-1]; + } + + + // very 'simple' quant<->filesize relationship + data->quant= (s->quant * s->length) / desired; + + if (data->quant < 1) { + data->quant = 1; + } else if (data->quant > 31) { + data->quant = 31; + } + else if (s->type != XVID_TYPE_IVOP) + { + // Foxer: aid desired quantizer precision by accumulating decision error + if (s->type== XVID_TYPE_BVOP) { + rc->bquant_error[data->quant] += ((double)(s->quant * s->length) / desired) - data->quant; + + if (rc->bquant_error[data->quant] >= 1.0) { + rc->bquant_error[data->quant] -= 1.0; + data->quant++; + } + }else{ + rc->pquant_error[data->quant] += ((double)(s->quant * s->length) / desired) - data->quant; + + if (rc->pquant_error[data->quant] >= 1.0) { + rc->pquant_error[data->quant] -= 1.0; + ++data->quant; + } + } + } + + /* cap to min/max quant */ + + if (data->quant < data->min_quant[s->type-1]) { + data->quant = data->min_quant[s->type-1]; + }else if (data->quant > data->max_quant[s->type-1]) { + data->quant = data->max_quant[s->type-1]; + } + + /* subsequent p/b frame quants can only be +- 2 */ + if (s->type != XVID_TYPE_IVOP && rc->last_quant[s->type-1] && capped_to_max_framesize == 0) { + + if (data->quant > rc->last_quant[s->type-1] + 2) { + data->quant = rc->last_quant[s->type-1] + 2; + DPRINTF(XVID_DEBUG_RC, "p/b-frame quantizer prevented from rising too steeply"); + } + if (data->quant < rc->last_quant[s->type-1] - 2) { + data->quant = rc->last_quant[s->type-1] - 2; + DPRINTF(XVID_DEBUG_RC, "p/b-frame quantizer prevented from falling too steeply"); + } + } + + if (capped_to_max_framesize == 0) { + rc->last_quant[s->type-1] = data->quant; + } + + + } /* if */ + + } + + return 0; +} + + + +static int rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data) +{ + stat_t * s = &rc->stats[data->frame_num]; + + if (data->frame_num >= rc->num_frames) { + /* insufficent stats data */ + return 0; + } + + rc->quant_count[data->quant]++; + + if (data->type == XVID_TYPE_IVOP) { + int kfdiff = (rc->keyframe_locations[rc->KF_idx] - rc->keyframe_locations[rc->KF_idx - 1]); + + rc->overflow += rc->KFoverflow; + rc->KFoverflow = s->desired_length - data->length; + + if (kfdiff > 1) { // non-consecutive keyframes + rc->KFoverflow_partial = rc->KFoverflow / (kfdiff - 1); + }else{ // consecutive keyframes + rc->overflow += rc->KFoverflow; + rc->KFoverflow = 0; + rc->KFoverflow_partial = 0; + } + rc->KF_idx++; + }else{ + // distribute part of the keyframe overflow + rc->overflow += s->desired_length - data->length + rc->KFoverflow_partial; + rc->KFoverflow -= rc->KFoverflow_partial; + } + + DPRINTF(XVID_DEBUG_RC, "[%i] quant:%i stats1:%i scaled:%i actual:%i overflow:%i\n", + data->frame_num, + data->quant, + s->length, + s->scaled_length, + data->length, + rc->overflow); + + return(0); +} + + + +int xvid_plugin_2pass2(void * handle, int opt, void * param1, void * param2) +{ + switch(opt) + { + case XVID_PLG_INFO : + return 0; + + case XVID_PLG_CREATE : + return rc_2pass2_create((xvid_plg_create_t*)param1, param2); + + case XVID_PLG_DESTROY : + return rc_2pass2_destroy((rc_2pass2_t*)handle, (xvid_plg_destroy_t*)param1); + + case XVID_PLG_BEFORE : + return rc_2pass2_before((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); + + case XVID_PLG_AFTER : + return rc_2pass2_after((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); + } + + return XVID_ERR_FAIL; +}