--- branches/dev-api-4/xvidcore/src/plugins/plugin_2pass2.c 2003/03/25 11:01:48 942 +++ branches/dev-api-4/xvidcore/src/plugins/plugin_2pass2.c 2003/05/29 11:37:20 1048 @@ -1,12 +1,15 @@ /****************************************************************************** * * XviD Bit Rate Controller Library - * - VBR 2 pass bitrate controler implementation - + * - VBR 2 pass bitrate controller implementation - * - * Copyright (C) 2002 Edouard Gomez + * Copyright (C) 2002 Foxer + * 2002 Dirk Knop + * 2002-2003 Edouard Gomez + * 2003 Pete Ross * - * The curve treatment algorithm is the one implemented by Foxer and - * Dirk Knop for the XviD vfw dynamic library. + * This curve treatment algorithm is the one originally implemented by Foxer + * and tuned by Dirk Knop for the XviD vfw frontend. * * 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 @@ -22,582 +25,152 @@ * 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 1.1.2.1 2003-03-25 10:58:33 suxen_drol Exp $ + * $Id: plugin_2pass2.c,v 1.1.2.15 2003-05-29 11:37:20 edgomez Exp $ * *****************************************************************************/ #include #include - -#define RAD2DEG 57.295779513082320876798154814105 -#define DEG2RAD 0.017453292519943295769236907684886 +#include #include "../xvid.h" #include "../image/image.h" +/***************************************************************************** + * Some constants + ****************************************************************************/ + +#define DEFAULT_KEYFRAME_BOOST 0 +#define DEFAULT_PAYBACK_METHOD XVID_PAYBACK_PROP +#define DEFAULT_BITRATE_PAYBACK_DELAY 250 +#define DEFAULT_CURVE_COMPRESSION_HIGH 0 +#define DEFAULT_CURVE_COMPRESSION_LOW 0 +#define DEFAULT_MAX_OVERFLOW_IMPROVEMENT 60 +#define DEFAULT_MAX_OVERFLOW_DEGRADATION 60 + +/* Keyframe settings */ +#define DEFAULT_KFTRESHOLD 10 +#define DEFAULT_KFREDUCTION 20 +#define DEFAULT_MIN_KEY_INTERVAL 1 + +/***************************************************************************** + * Structures + ****************************************************************************/ + +/* Statistics */ 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; -} stat_t; - - + 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 */ +/* Context struct */ typedef struct { xvid_plugin_2pass2_t param; /* constant statistical data */ - int num_frames; - int num_keyframes; - - 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 */ - - double curve_comp_scale; - double movie_curve; + int num_frames; + int num_keyframes; + uint64_t target; /* target filesize */ - 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; + 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 */ - /* dynamic */ + /* zone statistical data */ + double avg_weight; /* average weight */ + int64_t tot_quant; /* total length used by XVID_ZONE_QUANT zones */ - 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; -} 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; + double curve_comp_scale; + double movie_curve; - rc->num_frames = 0; - rc->num_keyframes = 0; + /* dynamic */ - if ((f = fopen(filename, "rt")) == NULL) - return 0; + int * keyframe_locations; + stat_t * stats; - while((n = fscanf(f, "%c %d %d %d %d %d\n", - &type, &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++; - } - } + double quant_error[3][32]; + int quant_count[32]; + int last_quant[3]; - fclose(f); + double curve_comp_error; + int overflow; + int KFoverflow; + int KFoverflow_partial; + int KF_idx; - return 1; -} + double fq_error; +} rc_2pass2_t; -/* open stats file(s) and read into rc->stats array */ +/***************************************************************************** + * Sub plugin functions prototypes + ****************************************************************************/ + +static int rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t ** handle); +static int rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data); +static int rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data); +static int rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy); + +/***************************************************************************** + * Plugin definition + ****************************************************************************/ -static int load_stats(rc_2pass2_t *rc, char * filename1, char * filename2) +int +xvid_plugin_2pass2(void * handle, int opt, void * param1, void * param2) { - FILE * f1, *f2; - int i; - - - if ((f1 = fopen(filename1, "rt"))==NULL) - return 0; - - if ((f2 = fopen(filename2, "rt"))==NULL) { - fclose(f1); + switch(opt) { + case XVID_PLG_INFO : return 0; - } - - i = 0; - while(i < rc->num_frames) { - stat_t * s = &rc->stats[i]; - int n, ignore; - char type; - - n = fscanf(f1, "%c %d %d %d %d %d\n", &type, &s->quant, &s->length, &ignore, &ignore, &ignore); - if (n == EOF) break; - - 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 */ - printf("unk\n"); - continue; - } - - n = fscanf(f2, "%c %d %d %d %d %d\n", &type, &ignore, &s->scaled_length, &ignore, &ignore, &ignore); - if (n == EOF) break; - if (type != 'i'&& type != 'p' && type != 'b' && type != 's') { - printf("unk\n"); - continue; /* unknown type */ - } - - i++; - } - rc->num_frames = i; - - - fclose(f1); - if (filename2) - fclose(f2); - - return 1; -} - - -/*static void internal_scale(rc_2pass2_t *rc) -{ - const double avg_pvop = rc->avg_length[XVID_TYPE_PVOP-1]; - const double avg_bvop = rc->avg_length[XVID_TYPE_BVOP-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]; - uint64_t i_total = 0; - double total1,total2; - int i; - - for (i=0; inum_frames; i++) { - stat_t * s = &rc->stats[i]; - - if (s->type == XVID_TYPE_IVOP) { - i_total += s->length + s->length * rc->param.keyframe_boost / 100; - } - } - - // compensate for avi frame overhead - rc->target_size -= rc->num_frames * 24; - - // perform prepass to compensate for over/undersizing - - if (rc->param.use_alt_curve) { - - 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->alt_curve_use_auto) { - if (rc->movie_curve > 1.0) { - 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); - 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 = 0; - total2 = 0; - - for (i=0; inum_frames; i++) { - stat_t * s = &rc->stats[i]; - - if (s->type != XVID_TYPE_IVOP) { - - double dbytes = s->length / rc->movie_curve; - double dbytes2; - total1 += dbytes; - - if (s->type == XVID_TYPE_BVOP) - dbytes *= avg_pvop / avg_bvop; - - if (rc->param.use_alt_curve) { - if (dbytes > avg_pvop) { - 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 - avg_pvop) * 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 - avg_pvop) / 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 - avg_pvop) * 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 - avg_pvop) * 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 - avg_pvop) / 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 - avg_pvop) * 90.0 / rc->alt_curve_low_diff)))); - } - } - } - }else{ - if (dbytes > avg_pvop) { - dbytes2 = ((double)dbytes + (avg_pvop - dbytes) * - rc->param.curve_compression_high / 100.0); - }else{ - dbytes2 = ((double)dbytes + (avg_pvop - dbytes) * - rc->param.curve_compression_low / 100.0); - } - } - - if (s->type == XVID_TYPE_BVOP) { - dbytes2 *= avg_bvop / avg_pvop; - } - - if (dbytes2 < rc->min_length[s->type-1]) { - dbytes = rc->min_length[s->type-1]; - } - - total2 += dbytes2; - } - } - - rc->curve_comp_scale = total1 / total2; - - if (!rc->param.use_alt_curve) { - printf("middle frame size for asymmetric curve compression: %i", - (int)(avg_pvop * rc->curve_comp_scale)); - } -}*/ - - - - -static void print_stats(rc_2pass2_t * rc) -{ - int i; - for (i = 0; i < rc->num_frames; i++) { - stat_t * s = &rc->stats[i]; - printf("%i %i %i %i\n", s->type, s->quant, s->length, s->scaled_length); - - } -} - - -/* pre-process the statistics data - this is a clone of vfw/src/2pass.c:codec_2pass_init minus file reading, alt_curve, internal scale -*/ - -void pre_process(rc_2pass2_t * rc) -{ - 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; inum_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])); - - 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; - } - } - - 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; 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); - } - } + case XVID_PLG_CREATE : + return rc_2pass2_create((xvid_plg_create_t*)param1, param2); - 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; - } - } + case XVID_PLG_DESTROY : + return rc_2pass2_destroy((rc_2pass2_t*)handle, (xvid_plg_destroy_t*)param1); - rc->curve_comp_scale = total1 / total2; + case XVID_PLG_BEFORE : + return rc_2pass2_before((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); - 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)); + case XVID_PLG_AFTER : + return rc_2pass2_after((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); } - 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; + return XVID_ERR_FAIL; } +/***************************************************************************** + * Sub plugin functions definitions + ****************************************************************************/ + +/* First a few local helping function prototypes */ +static int det_stats_length(rc_2pass2_t * rc, char * filename); +static int load_stats(rc_2pass2_t *rc, char * filename); +static void zone_process(rc_2pass2_t *rc, const xvid_plg_create_t * create); +static void internal_scale(rc_2pass2_t *rc); +static void pre_process0(rc_2pass2_t * rc); +static void pre_process1(rc_2pass2_t * rc); +/*---------------------------------------------------------------------------- + *--------------------------------------------------------------------------*/ - -static int rc_2pass2_create(xvid_plg_create_t * create, rc_2pass2_t ** handle) +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) @@ -605,69 +178,140 @@ 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; + /* + * Initialize all defaults + */ +#define _INIT(a, b) if((a) <= 0) (a) = (b) + /* Let's set our defaults if needed */ + _INIT(rc->param.keyframe_boost, DEFAULT_KEYFRAME_BOOST); + _INIT(rc->param.payback_method, DEFAULT_PAYBACK_METHOD); + _INIT(rc->param.bitrate_payback_delay, DEFAULT_BITRATE_PAYBACK_DELAY); + _INIT(rc->param.curve_compression_high, DEFAULT_CURVE_COMPRESSION_HIGH); + _INIT(rc->param.curve_compression_low, DEFAULT_CURVE_COMPRESSION_LOW); + _INIT(rc->param.max_overflow_improvement, DEFAULT_MAX_OVERFLOW_IMPROVEMENT); + _INIT(rc->param.max_overflow_degradation, DEFAULT_MAX_OVERFLOW_DEGRADATION); + + /* Keyframe settings */ + _INIT(rc->param.kftreshold, DEFAULT_KFTRESHOLD); + _INIT(rc->param.kfreduction, DEFAULT_KFREDUCTION); + _INIT(rc->param.min_key_interval, DEFAULT_MIN_KEY_INTERVAL); +#undef _INIT + + /* Initialize some stuff to zero */ + for(i=0; i<32; i++) rc->quant_count[i] = 0; + + for(i=0; i<3; i++) { + int j; + for (j=0; j<32; j++) + rc->quant_error[i][j] = 0; + } - if (!det_stats_length(rc, param->filename1)){ - DPRINTF(DPRINTF_RC,"fopen %s failed\n", param->filename1); - free(rc); - return XVID_ERR_FAIL; - } + for (i=0; i<3; i++) + rc->last_quant[i] = 0; - if ((rc->stats = malloc(rc->num_frames * sizeof(stat_t))) == NULL) { - free(rc); - return XVID_ERR_MEMORY; - } + rc->fq_error = 0; + + /* Count frames in the stats file */ + if (!det_stats_length(rc, param->filename)) { + DPRINTF(XVID_DEBUG_RC,"ERROR: fopen %s failed\n", param->filename); + free(rc); + return XVID_ERR_FAIL; + } - /* XXX: do we need an addition location */ - if ((rc->keyframe_locations = malloc((rc->num_keyframes + 1) * sizeof(int))) == NULL) { - free(rc->stats); + /* Allocate the stats' memory */ + if ((rc->stats = malloc(rc->num_frames * sizeof(stat_t))) == NULL) { free(rc); return XVID_ERR_MEMORY; } - if (!load_stats(rc, param->filename1, param->filename2)) { - DPRINTF(DPRINTF_RC,"fopen %s,%s failed\n", param->filename1, param->filename2); - free(rc->keyframe_locations); - free(rc->stats); - free(rc); - return XVID_ERR_FAIL; - } + /* + * Allocate keyframes location's memory + * PS: see comment in pre_process0 for the +1 location requirement + */ + rc->keyframe_locations = malloc((rc->num_keyframes + 1) * sizeof(int)); + if (rc->keyframe_locations == NULL) { + free(rc->stats); + free(rc); + return XVID_ERR_MEMORY; + } - /* pre-process our stats */ - pre_process(rc); - - *handle = rc; + if (!load_stats(rc, param->filename)) { + DPRINTF(XVID_DEBUG_RC,"ERROR: fopen %s failed\n", param->filename); + free(rc->keyframe_locations); + free(rc->stats); + free(rc); + return XVID_ERR_FAIL; + } + + /* Compute the target filesize */ + if (rc->num_frames < create->fbase/create->fincr) { + /* Source sequence is less than 1s long, we do as if it was 1s long */ + rc->target = rc->param.bitrate / 8; + } else { + /* Target filesize = bitrate/8 * numframes / framerate */ + rc->target = + ((uint64_t)rc->param.bitrate * (uint64_t)rc->num_frames * \ + (uint64_t)create->fincr) / \ + ((uint64_t)create->fbase * 8); + } + + DPRINTF(XVID_DEBUG_RC, "Frame rate: %d/%d (%ffps)\n", + create->fbase, create->fincr, + (double)create->fbase/(double)create->fincr); + DPRINTF(XVID_DEBUG_RC, "Number of frames: %d\n", rc->num_frames); + DPRINTF(XVID_DEBUG_RC, "Target bitrate: %ld\n", rc->param.bitrate); + DPRINTF(XVID_DEBUG_RC, "Target filesize: %lld\n", rc->target); + + /* Compensate the average frame overhead caused by the container */ + rc->target -= rc->num_frames*rc->param.container_frame_overhead; + DPRINTF(XVID_DEBUG_RC, "Container Frame overhead: %d\n", rc->param.container_frame_overhead); + DPRINTF(XVID_DEBUG_RC, "Target filesize (after container compensation): %lld\n", rc->target); + + /* + * First data pre processing: + * - finds the minimum frame length for each frame type during 1st pass. + * rc->min_size[] + * - determines the maximum frame length observed (no frame type distinction). + * rc->max_size + * - count how many times each frame type has been used. + * rc->count[] + * - total bytes used per frame type + * rc->total[] + * - store keyframe location + * rc->keyframe_locations[] + */ + pre_process0(rc); + + /* + * When bitrate is not given it means it has been scaled by an external + * application + */ + if (rc->param.bitrate) { + /* Apply zone settings */ + zone_process(rc, create); + /* Perform curve scaling */ + internal_scale(rc); + } else { + /* External scaling -- zones are ignored */ + 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); + + *handle = rc; return(0); } +/*---------------------------------------------------------------------------- + *--------------------------------------------------------------------------*/ -static int rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy) +static int +rc_2pass2_destroy(rc_2pass2_t * rc, xvid_plg_destroy_t * destroy) { free(rc->keyframe_locations); free(rc->stats); @@ -675,156 +319,164 @@ return(0); } +/*---------------------------------------------------------------------------- + *--------------------------------------------------------------------------*/ - -static int rc_2pass2_before(rc_2pass2_t * rc, xvid_plg_data_t * data) +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->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; + stat_t * s = &rc->stats[data->frame_num]; + int overflow; + int desired; + double dbytes; + double curve_temp; + double scaled_quant; + int capped_to_max_framesize = 0; + + /* + * This function is quite long but easy to understand. In order to simplify + * the code path (a bit), we treat 3 cases that can return immediatly. + */ + + /* First case: Another plugin has already set a quantizer */ + if (data->quant > 0) + return(0); + + /* Second case: We are in a Quant zone */ + 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; - 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]; - } + return(0); + } - if (rc->param.payback_method == XVID_PAYBACK_BIAS) { - desired =(int)(rc->curve_comp_error / rc->param.bitrate_payback_delay); - }else{ + /* Third case: insufficent stats data */ + if (data->frame_num >= rc->num_frames) + return 0; + + /* + * The last case is the one every normal minded developer should fear to + * maintain in a project :-) + */ + + /* XXX: why by 8 */ + overflow = rc->overflow / 8; + + /* + * The rc->overflow field represents the overflow in current scene (between two + * IFrames) so we must not forget to reset it if we are entering a new scene + */ + if (s->type == XVID_TYPE_IVOP) + 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; + + /* + * We are now entering in the hard part of the algo, it was first designed + * to work with i/pframes only streams, so the way it computes things is + * adapted to pframes only. However we can use it if we just take care to + * scale the bframes sizes to pframes sizes using the ratio avg_p/avg_p and + * then before really using values depending on frame sizes, scaling the + * value again with the inverse ratio + */ + if (s->type == XVID_TYPE_BVOP) + 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 + * scaled curve "paying back" past errors in curve previsions. + */ + if (rc->param.payback_method == XVID_PAYBACK_BIAS) { + desired = (int)(rc->curve_comp_error / rc->param.bitrate_payback_delay); + } else { desired = (int)(rc->curve_comp_error * dbytes / - rc->avg_length[XVID_TYPE_PVOP-1] / rc->param.bitrate_payback_delay); + rc->avg_length[XVID_TYPE_PVOP-1] / rc->param.bitrate_payback_delay); 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]; + rc->curve_comp_error -= desired; - curve_temp = curve_temp * rc->curve_comp_scale + rc->alt_curve_curve_bias_bonus; + /* XXX: warning */ + curve_temp = 0; - 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]; + if ((rc->param.curve_compression_high + rc->param.curve_compression_low) && s->type != XVID_TYPE_IVOP) { - desired += ((int)dbytes); - rc->curve_comp_error += dbytes - (int)dbytes; + 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); } - }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){ + /* + * End of code path for curve_temp, as told earlier, we are now + * obliged to scale the value to a bframe one using the inverse + * ratio applied earlier + */ + 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 { + /* + * End of code path for dbytes, as told earlier, we are now + * obliged to scale the value to a bframe one using the inverse + * ratio applied earlier + */ + 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){ + /* + * We can't do bigger frames than first pass, this would be stupid as first + * pass is quant=2 and that reaching quant=1 is not worth it. We would lose + * many bytes and we would not not gain much quality. + */ + if (desired > s->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]; - } + } 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; + 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 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 < rc->param.kftreshold) { + + KFdistance -= rc->param.min_key_interval; if (KFdistance >= 0) { - int KF_min_size; + int KF_min_size; KF_min_size = desired * (100 - rc->param.kfreduction) / 100; if (KF_min_size < 1) @@ -839,101 +491,130 @@ } } - overflow = (int)((double)overflow * desired / rc->avg_length[XVID_TYPE_PVOP-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)) { + /* Reign in overflow with huge frames */ + if (labs(overflow) > labs(rc->overflow)) overflow = rc->overflow; - } - - // Foxer: make sure overflow doesn't run away + /* 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){ + } else if (overflow < desired * rc->param.max_overflow_degradation / -100){ desired += desired * rc->param.max_overflow_degradation / -100; - }else{ + } else { desired += overflow; } - if (desired > rc->max_length) { + /* Make sure we are not higher than desired frame size */ + if (desired > rc->max_length) { capped_to_max_framesize = 1; desired = rc->max_length; + DPRINTF(XVID_DEBUG_RC,"[%i] Capped to maximum frame size\n", + data->frame_num); } - // make sure to not scale below the minimum framesize - if (desired < rc->min_length[s->type-1]) { - desired = rc->min_length[s->type-1]; - } - + /* Make sure to not scale below the minimum framesize */ + if (desired < rc->min_length[s->type-1]) { + desired = rc->min_length[s->type-1]; + DPRINTF(XVID_DEBUG_RC,"[%i] Capped to minimum frame size\n", + data->frame_num); + } - // very 'simple' quant<->filesize relationship - data->quant= (s->quant * s->length) / desired; + /* + * Don't laugh at this very 'simple' quant<->filesize relationship, it + * proves to be acurate enough for our algorithm + */ + scaled_quant = (double)s->quant*(double)s->length/(double)desired; + + /* + * Quantizer has been scaled using floating point operations/results, we + * must cast it to integer + */ + data->quant = (int)scaled_quant; + /* Let's clip the computed quantizer, if needed */ if (data->quant < 1) { data->quant = 1; - } else if (data->quant > 31) { + } 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; + } else if (s->type != XVID_TYPE_IVOP) { - if (rc->pquant_error[data->quant] >= 1.0) { - rc->pquant_error[data->quant] -= 1.0; - ++data->quant; - } + /* + * The frame quantizer has not been clipped, this appears to be a good + * computed quantizer, do not loose quantizer decimal part that we + * accumulate for later reuse when its sum represents a complete unit. + */ + rc->quant_error[s->type-1][data->quant] += scaled_quant - (double)data->quant; + + if (rc->quant_error[s->type-1][data->quant] >= 1.0) { + rc->quant_error[s->type-1][data->quant] -= 1.0; + data->quant++; + } else if (rc->quant_error[s->type-1][data->quant] <= -1.0) { + rc->quant_error[s->type-1][data->quant] += 1.0; + data->quant--; } - } - /* cap to min/max quant */ + } - if (data->quant < rc->param.min_quant[s->type-1]) { - data->quant = rc->param.min_quant[s->type-1]; - }else if (data->quant > rc->param.max_quant[s->type-1]) { - data->quant = rc->param.max_quant[s->type-1]; - } + /* + * Now we have a computed quant that is in the right quante range, with a + * possible +1 correction due to cumulated error. We can now safely clip + * the quantizer again with user's quant ranges. "Safely" means the Rate + * Control could learn more about this quantizer, this knowledge is useful + * for future frames even if it this quantizer won't be really used atm, + * that's why we don't perform this clipping earlier. + */ + 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 */ + /* + * To avoid big quality jumps from frame to frame, we apply a "security" + * rule that makes |last_quant - new_quant| <= 2. This rule only applies + * to predicted frames (P and B) + */ 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(DPRINTF_RC, "p/b-frame quantizer prevented from rising too steeply"); + DPRINTF(XVID_DEBUG_RC, + "[%i] p/b-frame quantizer prevented from rising too steeply\n", + data->frame_num); } if (data->quant < rc->last_quant[s->type-1] - 2) { data->quant = rc->last_quant[s->type-1] - 2; - DPRINTF(DPRINTF_RC, "p/b-frame quantizer prevented from falling too steeply"); + DPRINTF(XVID_DEBUG_RC, + "[%i] p/b-frame quantizer prevented from falling too steeply\n", + data->frame_num); } } - if (capped_to_max_framesize == 0) { - rc->last_quant[s->type-1] = data->quant; - } + /* + * We don't want to pollute the RC history results when our computed quant + * has been computed from a capped frame size + */ + if (capped_to_max_framesize == 0) + rc->last_quant[s->type-1] = data->quant; return 0; } +/*---------------------------------------------------------------------------- + *--------------------------------------------------------------------------*/ - -static int rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data) +static int +rc_2pass2_after(rc_2pass2_t * rc, xvid_plg_data_t * data) { - stat_t * s = &rc->stats[data->frame_num]; + const char frame_type[4] = { 'i', 'p', 'b', 's'}; + stat_t * s = &rc->stats[data->frame_num]; - if (data->frame_num >= rc->num_frames) { - /* insufficent stats data */ + /* Insufficent stats data */ + if (data->frame_num >= rc->num_frames) return 0; - } rc->quant_count[data->quant]++; @@ -951,44 +632,400 @@ rc->KFoverflow_partial = 0; } rc->KF_idx++; - }else{ + } else { // distribute part of the keyframe overflow rc->overflow += s->desired_length - data->length + rc->KFoverflow_partial; rc->KFoverflow -= rc->KFoverflow_partial; } - printf("[%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); + DPRINTF(XVID_DEBUG_RC, "[%i] type:%c quant:%i stats1:%i scaled:%i actual:%i desired:%d overflow:%i\n", + data->frame_num, + frame_type[data->type-1], + data->quant, + s->length, + s->scaled_length, + data->length, + s->desired_length, + rc->overflow); return(0); } +/***************************************************************************** + * Helper functions definition + ****************************************************************************/ +#define BUF_SZ 1024 +#define MAX_COLS 5 -int xvid_plugin_2pass2(void * handle, int opt, void * param1, void * param2) +/* open stats file, and count num frames */ +static int +det_stats_length(rc_2pass2_t * rc, char * filename) { - switch(opt) - { - case XVID_PLG_INFO : + FILE * f; + int n, ignore; + char type; + + rc->num_frames = 0; + rc->num_keyframes = 0; + + if ((f = fopen(filename, "rt")) == NULL) return 0; - case XVID_PLG_CREATE : - return rc_2pass2_create((xvid_plg_create_t*)param1, param2); + 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++; + } + } - case XVID_PLG_DESTROY : - return rc_2pass2_destroy((rc_2pass2_t*)handle, (xvid_plg_destroy_t*)param1); + fclose(f); - case XVID_PLG_BEFORE : - return rc_2pass2_before((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); + return 1; +} - case XVID_PLG_AFTER : - return rc_2pass2_after((rc_2pass2_t*)handle, (xvid_plg_data_t*)param1); +/* 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\n"); + s->type = XVID_TYPE_PVOP; + } + + i++; } - return XVID_ERR_FAIL; + rc->num_frames = i; + + fclose(f); + + return 1; +} + +#if 0 +static void print_stats(rc_2pass2_t * rc) +{ + int i; + DPRINTF(XVID_DEBUG_RC, "type quant length scaled_length\n"); + for (i = 0; i < rc->num_frames; i++) { + stat_t * s = &rc->stats[i]; + DPRINTF(XVID_DEBUG_RC, "%d %d %d %d\n", s->type, s->quant, s->length, s->scaled_length); + } +} +#endif + +/* pre-process the statistics data + - for each type, count, tot_length, min_length, max_length + - set keyframes_locations +*/ + +static void +pre_process0(rc_2pass2_t * rc) +{ + int i,j; + + /* + * *rc fields initialization + * NB: INT_MAX and INT_MIN are used in order to be immediately replaced + * with real values of the 1pass + */ + for (i=0; i<3; i++) { + rc->count[i]=0; + rc->tot_length[i] = 0; + rc->min_length[i] = INT_MAX; + } + + rc->max_length = INT_MIN; + + /* + * Loop through all frames and find/compute all the stuff this function + * is supposed to do + */ + 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 (s->length < rc->min_length[s->type-1]) { + rc->min_length[s->type-1] = s->length; + } + + if (s->length > rc->max_length) { + rc->max_length = s->length; + } + + if (s->type == XVID_TYPE_IVOP) { + rc->keyframe_locations[j] = i; + j++; + } + } + + /* + * Nota Bene: + * The "per sequence" overflow system considers a natural sequence to be + * formed by all frames between two iframes, so if we want to make sure + * the system does not go nuts during last sequence, we force the last + * frame to appear in the keyframe locations array. + */ + rc->keyframe_locations[j] = i; + + DPRINTF(XVID_DEBUG_RC, "Min 1st pass IFrame length: %d\n", rc->min_length[0]); + DPRINTF(XVID_DEBUG_RC, "Min 1st pass PFrame length: %d\n", rc->min_length[1]); + DPRINTF(XVID_DEBUG_RC, "Min 1st pass BFrame length: %d\n", rc->min_length[2]); +} + +/* 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; + double scaler; + int i, num_MBs; + int min_size[3]; + + /* Let's compute a linear scaler in order to perform curve scaling */ + scaler = (double)target / (double)pass1_length; + + if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { + DPRINTF(XVID_DEBUG_RC, "WARNING: Undersize detected\n"); + scaler = 1.0; + } + + DPRINTF(XVID_DEBUG_RC, + "Before correction: target=%i, tot_length=%i, scaler=%f\n", + (int)target, (int)pass1_length, scaler); + + /* + * Compute min frame lengths (for each frame type) according to the number + * of MBs. We sum all blocks count from frame 0 (should be an IFrame, so + * blocks[0] should be enough) to know how many MBs there are. + */ + num_MBs = rc->stats[0].blks[0] + rc->stats[0].blks[1] + rc->stats[0].blks[2]; + min_size[0] = ((num_MBs*22) + 240) / 8; + min_size[1] = ((num_MBs) + 88) / 8; + min_size[2] = 8; + + /* + * 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 + * frame length from the original and target total lengths + */ + 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; + continue; + } + + /* Compute the scaled length */ + len = (int)((double)s->length * scaler * s->weight / rc->avg_weight); + + /* Compare with the computed minimum */ + if (len < min_size[s->type-1]) { + /* force frame size to our computed minimum */ + s->scaled_length = min_size[s->type-1]; + target -= s->scaled_length; + pass1_length -= s->length; + } else { + /* Do nothing for now, we'll scale this later */ + s->scaled_length = 0; + } + } + + /* Correct the scaler for all non forced frames */ + scaler = (double)target / (double)pass1_length; + + /* Detect undersizing */ + if (target <= 0 || pass1_length <= 0 || target >= pass1_length) { + DPRINTF(XVID_DEBUG_RC, "WARNING: Undersize detected\n"); + scaler = 1.0; + } + + DPRINTF(XVID_DEBUG_RC, + "After correction: target=%i, tot_length=%i, scaler=%f\n", + (int)target, (int)pass1_length, scaler); + + /* Do another pass with the new scaler */ + for (i=0; inum_frames; i++) { + stat_t * s = &rc->stats[i]; + + /* Ignore frame with forced frame sizes */ + if (s->scaled_length == 0) + s->scaled_length = (int)((double)s->length * scaler * s->weight / rc->avg_weight); + } +} + +static 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; + } + } + + /* --- */ + + 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 (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; + + 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)); + + rc->overflow = 0; + rc->KFoverflow = 0; + rc->KFoverflow_partial = 0; + rc->KF_idx = 1; }