1 /*****************************************************************************
2 * common.c: h264 library
3 *****************************************************************************
4 * Copyright (C) 2003-2008 x264 project
6 * Authors: Loren Merritt <lorenm@u.washington.edu>
7 * Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
22 *****************************************************************************/
34 static void x264_log_default( void *, int, const char *, va_list );
36 /****************************************************************************
38 ****************************************************************************/
39 void x264_param_default( x264_param_t *param )
42 memset( param, 0, sizeof( x264_param_t ) );
45 param->cpu = x264_cpu_detect();
47 param->b_deterministic = 1;
49 /* Video properties */
50 param->i_csp = X264_CSP_I420;
53 param->vui.i_sar_width = 0;
54 param->vui.i_sar_height= 0;
55 param->vui.i_overscan = 0; /* undef */
56 param->vui.i_vidformat = 5; /* undef */
57 param->vui.b_fullrange = 0; /* off */
58 param->vui.i_colorprim = 2; /* undef */
59 param->vui.i_transfer = 2; /* undef */
60 param->vui.i_colmatrix = 2; /* undef */
61 param->vui.i_chroma_loc= 0; /* left center */
62 param->i_fps_num = 25;
64 param->i_level_idc = -1;
66 /* Encoder parameters */
67 param->i_frame_reference = 1;
68 param->i_keyint_max = 250;
69 param->i_keyint_min = 25;
71 param->i_scenecut_threshold = 40;
72 param->b_bframe_adaptive = 1;
73 param->i_bframe_bias = 0;
74 param->b_bframe_pyramid = 0;
76 param->b_deblocking_filter = 1;
77 param->i_deblocking_filter_alphac0 = 0;
78 param->i_deblocking_filter_beta = 0;
81 param->i_cabac_init_idc = 0;
83 param->rc.i_rc_method = X264_RC_NONE;
84 param->rc.i_bitrate = 0;
85 param->rc.f_rate_tolerance = 1.0;
86 param->rc.i_vbv_max_bitrate = 0;
87 param->rc.i_vbv_buffer_size = 0;
88 param->rc.f_vbv_buffer_init = 0.9;
89 param->rc.i_qp_constant = 26;
90 param->rc.f_rf_constant = 0;
91 param->rc.i_qp_min = 10;
92 param->rc.i_qp_max = 51;
93 param->rc.i_qp_step = 4;
94 param->rc.f_ip_factor = 1.4;
95 param->rc.f_pb_factor = 1.3;
96 param->rc.i_aq_mode = X264_AQ_GLOBAL;
97 param->rc.f_aq_strength = 1.0;
99 param->rc.b_stat_write = 0;
100 param->rc.psz_stat_out = "x264_2pass.log";
101 param->rc.b_stat_read = 0;
102 param->rc.psz_stat_in = "x264_2pass.log";
103 param->rc.f_qcompress = 0.6;
104 param->rc.f_qblur = 0.5;
105 param->rc.f_complexity_blur = 20;
106 param->rc.i_zones = 0;
109 param->pf_log = x264_log_default;
110 param->p_log_private = NULL;
111 param->i_log_level = X264_LOG_INFO;
114 param->analyse.intra = X264_ANALYSE_I4x4 | X264_ANALYSE_I8x8;
115 param->analyse.inter = X264_ANALYSE_I4x4 | X264_ANALYSE_I8x8
116 | X264_ANALYSE_PSUB16x16 | X264_ANALYSE_BSUB16x16;
117 param->analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
118 param->analyse.i_me_method = X264_ME_HEX;
119 param->analyse.i_me_range = 16;
120 param->analyse.i_subpel_refine = 5;
121 param->analyse.b_chroma_me = 1;
122 param->analyse.i_mv_range_thread = -1;
123 param->analyse.i_mv_range = -1; // set from level_idc
124 param->analyse.i_direct_8x8_inference = 1;
125 param->analyse.i_chroma_qp_offset = 0;
126 param->analyse.b_fast_pskip = 1;
127 param->analyse.b_dct_decimate = 1;
128 param->analyse.i_luma_deadzone[0] = 21;
129 param->analyse.i_luma_deadzone[1] = 11;
130 param->analyse.b_psnr = 1;
131 param->analyse.b_ssim = 1;
133 param->i_cqm_preset = X264_CQM_FLAT;
134 memset( param->cqm_4iy, 16, 16 );
135 memset( param->cqm_4ic, 16, 16 );
136 memset( param->cqm_4py, 16, 16 );
137 memset( param->cqm_4pc, 16, 16 );
138 memset( param->cqm_8iy, 16, 64 );
139 memset( param->cqm_8py, 16, 64 );
141 param->b_repeat_headers = 1;
145 static int parse_enum( const char *arg, const char * const *names, int *dst )
148 for( i = 0; names[i]; i++ )
149 if( !strcmp( arg, names[i] ) )
157 static int parse_cqm( const char *str, uint8_t *cqm, int length )
162 if( !sscanf( str, "%d", &coef ) || coef < 1 || coef > 255 )
165 } while( i < length && (str = strchr( str, ',' )) && str++ );
166 return (i == length) ? 0 : -1;
169 static int x264_atobool( const char *str, int *b_error )
171 if( !strcmp(str, "1") ||
172 !strcmp(str, "true") ||
173 !strcmp(str, "yes") )
175 if( !strcmp(str, "0") ||
176 !strcmp(str, "false") ||
183 static int x264_atoi( const char *str, int *b_error )
186 int v = strtol( str, &end, 0 );
187 if( end == str || *end != '\0' )
192 static double x264_atof( const char *str, int *b_error )
195 double v = strtod( str, &end );
196 if( end == str || *end != '\0' )
201 #define atobool(str) ( name_was_bool = 1, x264_atobool( str, &b_error ) )
202 #define atoi(str) x264_atoi( str, &b_error )
203 #define atof(str) x264_atof( str, &b_error )
205 int x264_param_parse( x264_param_t *p, const char *name, const char *value )
207 char *name_buf = NULL;
210 int value_was_null = !value;
214 return X264_PARAM_BAD_NAME;
218 if( value[0] == '=' )
221 if( strchr( name, '_' ) ) // s/_/-/g
224 name_buf = strdup(name);
225 while( (p = strchr( name_buf, '_' )) )
230 if( (!strncmp( name, "no-", 3 ) && (i = 3)) ||
231 (!strncmp( name, "no", 2 ) && (i = 2)) )
234 value = atobool(value) ? "false" : "true";
238 #define OPT(STR) else if( !strcmp( name, STR ) )
239 #define OPT2(STR0, STR1) else if( !strcmp( name, STR0 ) || !strcmp( name, STR1 ) )
243 p->cpu = isdigit(value[0]) ? atoi(value) :
244 !strcmp(value, "auto") || atobool(value) ? x264_cpu_detect() : 0;
247 char *buf = strdup(value);
248 char *tok, *saveptr, *init;
251 for( init=buf; (tok=strtok_r(init, ",", &saveptr)); init=NULL )
253 for( i=0; x264_cpu_names[i].flags && strcasecmp(tok, x264_cpu_names[i].name); i++ );
254 p->cpu |= x264_cpu_names[i].flags;
255 if( !x264_cpu_names[i].flags )
263 if( !strcmp(value, "auto") )
266 p->i_threads = atoi(value);
268 OPT2("deterministic", "n-deterministic")
269 p->b_deterministic = atobool(value);
270 OPT2("level", "level-idc")
272 if( atof(value) < 6 )
273 p->i_level_idc = (int)(10*atof(value)+.5);
275 p->i_level_idc = atoi(value);
279 b_error = ( 2 != sscanf( value, "%d:%d", &p->vui.i_sar_width, &p->vui.i_sar_height ) &&
280 2 != sscanf( value, "%d/%d", &p->vui.i_sar_width, &p->vui.i_sar_height ) );
283 b_error |= parse_enum( value, x264_overscan_names, &p->vui.i_overscan );
285 b_error |= parse_enum( value, x264_vidformat_names, &p->vui.i_vidformat );
287 b_error |= parse_enum( value, x264_fullrange_names, &p->vui.b_fullrange );
289 b_error |= parse_enum( value, x264_colorprim_names, &p->vui.i_colorprim );
291 b_error |= parse_enum( value, x264_transfer_names, &p->vui.i_transfer );
293 b_error |= parse_enum( value, x264_colmatrix_names, &p->vui.i_colmatrix );
296 p->vui.i_chroma_loc = atoi(value);
297 b_error = ( p->vui.i_chroma_loc < 0 || p->vui.i_chroma_loc > 5 );
301 if( sscanf( value, "%d/%d", &p->i_fps_num, &p->i_fps_den ) == 2 )
305 float fps = atof(value);
306 p->i_fps_num = (int)(fps * 1000 + .5);
310 OPT2("ref", "frameref")
311 p->i_frame_reference = atoi(value);
314 p->i_keyint_max = atoi(value);
315 if( p->i_keyint_min > p->i_keyint_max )
316 p->i_keyint_min = p->i_keyint_max;
318 OPT2("min-keyint", "keyint-min")
320 p->i_keyint_min = atoi(value);
321 if( p->i_keyint_max < p->i_keyint_min )
322 p->i_keyint_max = p->i_keyint_min;
325 p->i_scenecut_threshold = atoi(value);
327 p->b_pre_scenecut = atobool(value);
329 p->i_bframe = atoi(value);
331 p->b_bframe_adaptive = atobool(value);
333 p->i_bframe_bias = atoi(value);
335 p->b_bframe_pyramid = atobool(value);
337 p->b_deblocking_filter = !atobool(value);
338 OPT2("filter", "deblock")
340 if( 2 == sscanf( value, "%d:%d", &p->i_deblocking_filter_alphac0, &p->i_deblocking_filter_beta ) ||
341 2 == sscanf( value, "%d,%d", &p->i_deblocking_filter_alphac0, &p->i_deblocking_filter_beta ) )
343 p->b_deblocking_filter = 1;
345 else if( sscanf( value, "%d", &p->i_deblocking_filter_alphac0 ) )
347 p->b_deblocking_filter = 1;
348 p->i_deblocking_filter_beta = p->i_deblocking_filter_alphac0;
351 p->b_deblocking_filter = atobool(value);
354 p->b_cabac = atobool(value);
356 p->i_cabac_init_idc = atoi(value);
358 p->b_interlaced = atobool(value);
361 if( strstr( value, "flat" ) )
362 p->i_cqm_preset = X264_CQM_FLAT;
363 else if( strstr( value, "jvt" ) )
364 p->i_cqm_preset = X264_CQM_JVT;
366 p->psz_cqm_file = strdup(value);
369 p->psz_cqm_file = strdup(value);
372 p->i_cqm_preset = X264_CQM_CUSTOM;
373 b_error |= parse_cqm( value, p->cqm_4iy, 16 );
374 b_error |= parse_cqm( value, p->cqm_4ic, 16 );
375 b_error |= parse_cqm( value, p->cqm_4py, 16 );
376 b_error |= parse_cqm( value, p->cqm_4pc, 16 );
380 p->i_cqm_preset = X264_CQM_CUSTOM;
381 b_error |= parse_cqm( value, p->cqm_8iy, 64 );
382 b_error |= parse_cqm( value, p->cqm_8py, 64 );
386 p->i_cqm_preset = X264_CQM_CUSTOM;
387 b_error |= parse_cqm( value, p->cqm_4iy, 16 );
388 b_error |= parse_cqm( value, p->cqm_4ic, 16 );
392 p->i_cqm_preset = X264_CQM_CUSTOM;
393 b_error |= parse_cqm( value, p->cqm_4py, 16 );
394 b_error |= parse_cqm( value, p->cqm_4pc, 16 );
398 p->i_cqm_preset = X264_CQM_CUSTOM;
399 b_error |= parse_cqm( value, p->cqm_4iy, 16 );
403 p->i_cqm_preset = X264_CQM_CUSTOM;
404 b_error |= parse_cqm( value, p->cqm_4ic, 16 );
408 p->i_cqm_preset = X264_CQM_CUSTOM;
409 b_error |= parse_cqm( value, p->cqm_4py, 16 );
413 p->i_cqm_preset = X264_CQM_CUSTOM;
414 b_error |= parse_cqm( value, p->cqm_4pc, 16 );
418 p->i_cqm_preset = X264_CQM_CUSTOM;
419 b_error |= parse_cqm( value, p->cqm_8iy, 64 );
423 p->i_cqm_preset = X264_CQM_CUSTOM;
424 b_error |= parse_cqm( value, p->cqm_8py, 64 );
427 p->i_log_level = atoi(value);
430 p->b_visualize = atobool(value);
433 p->psz_dump_yuv = strdup(value);
434 OPT2("analyse", "partitions")
436 p->analyse.inter = 0;
437 if( strstr( value, "none" ) ) p->analyse.inter = 0;
438 if( strstr( value, "all" ) ) p->analyse.inter = ~0;
440 if( strstr( value, "i4x4" ) ) p->analyse.inter |= X264_ANALYSE_I4x4;
441 if( strstr( value, "i8x8" ) ) p->analyse.inter |= X264_ANALYSE_I8x8;
442 if( strstr( value, "p8x8" ) ) p->analyse.inter |= X264_ANALYSE_PSUB16x16;
443 if( strstr( value, "p4x4" ) ) p->analyse.inter |= X264_ANALYSE_PSUB8x8;
444 if( strstr( value, "b8x8" ) ) p->analyse.inter |= X264_ANALYSE_BSUB16x16;
447 p->analyse.b_transform_8x8 = atobool(value);
448 OPT2("weightb", "weight-b")
449 p->analyse.b_weighted_bipred = atobool(value);
450 OPT2("direct", "direct-pred")
451 b_error |= parse_enum( value, x264_direct_pred_names, &p->analyse.i_direct_mv_pred );
453 p->analyse.i_direct_8x8_inference = atoi(value);
454 OPT("chroma-qp-offset")
455 p->analyse.i_chroma_qp_offset = atoi(value);
457 b_error |= parse_enum( value, x264_motion_est_names, &p->analyse.i_me_method );
458 OPT2("merange", "me-range")
459 p->analyse.i_me_range = atoi(value);
460 OPT2("mvrange", "mv-range")
461 p->analyse.i_mv_range = atoi(value);
462 OPT2("mvrange-thread", "mv-range-thread")
463 p->analyse.i_mv_range_thread = atoi(value);
464 OPT2("subme", "subq")
465 p->analyse.i_subpel_refine = atoi(value);
467 p->analyse.b_bidir_me = atobool(value);
469 p->analyse.b_chroma_me = atobool(value);
470 OPT2("b-rdo", "brdo")
471 p->analyse.b_bframe_rdo = atobool(value);
473 p->analyse.b_mixed_references = atobool(value);
475 p->analyse.i_trellis = atoi(value);
477 p->analyse.b_fast_pskip = atobool(value);
479 p->analyse.b_dct_decimate = atobool(value);
480 OPT("deadzone-inter")
481 p->analyse.i_luma_deadzone[0] = atoi(value);
482 OPT("deadzone-intra")
483 p->analyse.i_luma_deadzone[1] = atoi(value);
485 p->analyse.i_noise_reduction = atoi(value);
488 p->rc.i_bitrate = atoi(value);
489 p->rc.i_rc_method = X264_RC_ABR;
491 OPT2("qp", "qp_constant")
493 p->rc.i_qp_constant = atoi(value);
494 p->rc.i_rc_method = X264_RC_CQP;
498 p->rc.f_rf_constant = atof(value);
499 p->rc.i_rc_method = X264_RC_CRF;
501 OPT2("qpmin", "qp-min")
502 p->rc.i_qp_min = atoi(value);
503 OPT2("qpmax", "qp-max")
504 p->rc.i_qp_max = atoi(value);
505 OPT2("qpstep", "qp-step")
506 p->rc.i_qp_step = atoi(value);
508 p->rc.f_rate_tolerance = !strncmp("inf", value, 3) ? 1e9 : atof(value);
510 p->rc.i_vbv_max_bitrate = atoi(value);
512 p->rc.i_vbv_buffer_size = atoi(value);
514 p->rc.f_vbv_buffer_init = atof(value);
515 OPT2("ipratio", "ip-factor")
516 p->rc.f_ip_factor = atof(value);
517 OPT2("pbratio", "pb-factor")
518 p->rc.f_pb_factor = atof(value);
520 p->rc.i_aq_mode = atoi(value);
522 p->rc.f_aq_strength = atof(value);
525 int i = x264_clip3( atoi(value), 0, 3 );
526 p->rc.b_stat_write = i & 1;
527 p->rc.b_stat_read = i & 2;
531 p->rc.psz_stat_in = strdup(value);
532 p->rc.psz_stat_out = strdup(value);
535 p->rc.f_qcompress = atof(value);
537 p->rc.f_qblur = atof(value);
538 OPT2("cplxblur", "cplx-blur")
539 p->rc.f_complexity_blur = atof(value);
541 p->rc.psz_zones = strdup(value);
543 p->analyse.b_psnr = atobool(value);
545 p->analyse.b_ssim = atobool(value);
547 p->b_aud = atobool(value);
549 p->i_sps_id = atoi(value);
551 p->b_repeat_headers = !atobool(value);
552 OPT("repeat-headers")
553 p->b_repeat_headers = atobool(value);
555 return X264_PARAM_BAD_NAME;
565 b_error |= value_was_null && !name_was_bool;
566 return b_error ? X264_PARAM_BAD_VALUE : 0;
569 /****************************************************************************
571 ****************************************************************************/
572 void x264_log( x264_t *h, int i_level, const char *psz_fmt, ... )
574 if( i_level <= h->param.i_log_level )
577 va_start( arg, psz_fmt );
578 h->param.pf_log( h->param.p_log_private, i_level, psz_fmt, arg );
583 static void x264_log_default( void *p_unused, int i_level, const char *psz_fmt, va_list arg )
589 psz_prefix = "error";
591 case X264_LOG_WARNING:
592 psz_prefix = "warning";
598 psz_prefix = "debug";
601 psz_prefix = "unknown";
604 fprintf( stderr, "x264 [%s]: ", psz_prefix );
605 vfprintf( stderr, psz_fmt, arg );
608 /****************************************************************************
609 * x264_picture_alloc:
610 ****************************************************************************/
611 void x264_picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height )
613 pic->i_type = X264_TYPE_AUTO;
615 pic->img.i_csp = i_csp;
616 pic->img.i_plane = 3;
617 pic->img.plane[0] = x264_malloc( 3 * i_width * i_height / 2 );
618 pic->img.plane[1] = pic->img.plane[0] + i_width * i_height;
619 pic->img.plane[2] = pic->img.plane[1] + i_width * i_height / 4;
620 pic->img.i_stride[0] = i_width;
621 pic->img.i_stride[1] = i_width / 2;
622 pic->img.i_stride[2] = i_width / 2;
625 /****************************************************************************
626 * x264_picture_clean:
627 ****************************************************************************/
628 void x264_picture_clean( x264_picture_t *pic )
630 x264_free( pic->img.plane[0] );
632 /* just to be safe */
633 memset( pic, 0, sizeof( x264_picture_t ) );
636 /****************************************************************************
638 ****************************************************************************/
639 int x264_nal_encode( void *p_data, int *pi_data, int b_annexeb, x264_nal_t *nal )
641 uint8_t *dst = p_data;
642 uint8_t *src = nal->p_payload;
643 uint8_t *end = &nal->p_payload[nal->i_payload];
646 /* FIXME this code doesn't check overflow */
650 /* long nal start code (we always use long ones)*/
658 *dst++ = ( 0x00 << 7 ) | ( nal->i_ref_idc << 5 ) | nal->i_type;
662 if( i_count == 2 && *src <= 0x03 )
673 *pi_data = dst - (uint8_t*)p_data;
680 /****************************************************************************
682 ****************************************************************************/
683 void *x264_malloc( int i_size )
686 /* Mac OS X always returns 16 bytes aligned memory */
687 return malloc( i_size );
688 #elif defined( HAVE_MALLOC_H )
689 return memalign( 16, i_size );
693 buf = (uint8_t *) malloc( i_size + 15 + sizeof( void ** ) +
695 align_buf = buf + 15 + sizeof( void ** ) + sizeof( int );
696 align_buf -= (long) align_buf & 15;
697 *( (void **) ( align_buf - sizeof( void ** ) ) ) = buf;
698 *( (int *) ( align_buf - sizeof( void ** ) - sizeof( int ) ) ) = i_size;
703 /****************************************************************************
705 ****************************************************************************/
706 void x264_free( void *p )
710 #if defined( HAVE_MALLOC_H ) || defined( SYS_MACOSX )
713 free( *( ( ( void **) p ) - 1 ) );
718 /****************************************************************************
720 ****************************************************************************/
721 void *x264_realloc( void *p, int i_size )
724 return realloc( p, i_size );
730 i_old_size = *( (int*) ( (uint8_t*) p - sizeof( void ** ) -
733 p_new = x264_malloc( i_size );
734 if( i_old_size > 0 && i_size > 0 )
736 memcpy( p_new, p, ( i_old_size < i_size ) ? i_old_size : i_size );
743 /****************************************************************************
744 * x264_reduce_fraction:
745 ****************************************************************************/
746 void x264_reduce_fraction( int *n, int *d )
764 /****************************************************************************
766 ****************************************************************************/
767 char *x264_slurp_file( const char *filename )
772 FILE *fh = fopen( filename, "rb" );
775 b_error |= fseek( fh, 0, SEEK_END ) < 0;
776 b_error |= ( i_size = ftell( fh ) ) <= 0;
777 b_error |= fseek( fh, 0, SEEK_SET ) < 0;
780 buf = x264_malloc( i_size+2 );
783 b_error |= fread( buf, 1, i_size, fh ) != i_size;
784 if( buf[i_size-1] != '\n' )
785 buf[i_size++] = '\n';
796 /****************************************************************************
798 ****************************************************************************/
799 char *x264_param2string( x264_param_t *p, int b_res )
803 if( p->rc.psz_zones )
804 len += strlen(p->rc.psz_zones);
805 buf = s = x264_malloc( len );
809 s += sprintf( s, "%dx%d ", p->i_width, p->i_height );
810 s += sprintf( s, "fps=%d/%d ", p->i_fps_num, p->i_fps_den );
813 s += sprintf( s, "cabac=%d", p->b_cabac );
814 s += sprintf( s, " ref=%d", p->i_frame_reference );
815 s += sprintf( s, " deblock=%d:%d:%d", p->b_deblocking_filter,
816 p->i_deblocking_filter_alphac0, p->i_deblocking_filter_beta );
817 s += sprintf( s, " analyse=%#x:%#x", p->analyse.intra, p->analyse.inter );
818 s += sprintf( s, " me=%s", x264_motion_est_names[ p->analyse.i_me_method ] );
819 s += sprintf( s, " subme=%d", p->analyse.i_subpel_refine );
820 s += sprintf( s, " brdo=%d", p->analyse.b_bframe_rdo );
821 s += sprintf( s, " mixed_ref=%d", p->analyse.b_mixed_references );
822 s += sprintf( s, " me_range=%d", p->analyse.i_me_range );
823 s += sprintf( s, " chroma_me=%d", p->analyse.b_chroma_me );
824 s += sprintf( s, " trellis=%d", p->analyse.i_trellis );
825 s += sprintf( s, " 8x8dct=%d", p->analyse.b_transform_8x8 );
826 s += sprintf( s, " cqm=%d", p->i_cqm_preset );
827 s += sprintf( s, " deadzone=%d,%d", p->analyse.i_luma_deadzone[0], p->analyse.i_luma_deadzone[1] );
828 s += sprintf( s, " chroma_qp_offset=%d", p->analyse.i_chroma_qp_offset );
829 s += sprintf( s, " threads=%d", p->i_threads );
830 s += sprintf( s, " nr=%d", p->analyse.i_noise_reduction );
831 s += sprintf( s, " decimate=%d", p->analyse.b_dct_decimate );
832 s += sprintf( s, " mbaff=%d", p->b_interlaced );
834 s += sprintf( s, " bframes=%d", p->i_bframe );
837 s += sprintf( s, " b_pyramid=%d b_adapt=%d b_bias=%d direct=%d wpredb=%d bime=%d",
838 p->b_bframe_pyramid, p->b_bframe_adaptive, p->i_bframe_bias,
839 p->analyse.i_direct_mv_pred, p->analyse.b_weighted_bipred,
840 p->analyse.b_bidir_me );
843 s += sprintf( s, " keyint=%d keyint_min=%d scenecut=%d%s",
844 p->i_keyint_max, p->i_keyint_min, p->i_scenecut_threshold,
845 p->b_pre_scenecut ? "(pre)" : "" );
847 s += sprintf( s, " rc=%s", p->rc.i_rc_method == X264_RC_ABR ?
848 ( p->rc.b_stat_read ? "2pass" : p->rc.i_vbv_buffer_size ? "cbr" : "abr" )
849 : p->rc.i_rc_method == X264_RC_CRF ? "crf" : "cqp" );
850 if( p->rc.i_rc_method == X264_RC_ABR || p->rc.i_rc_method == X264_RC_CRF )
852 if( p->rc.i_rc_method == X264_RC_CRF )
853 s += sprintf( s, " crf=%.1f", p->rc.f_rf_constant );
855 s += sprintf( s, " bitrate=%d ratetol=%.1f",
856 p->rc.i_bitrate, p->rc.f_rate_tolerance );
857 s += sprintf( s, " qcomp=%.2f qpmin=%d qpmax=%d qpstep=%d",
858 p->rc.f_qcompress, p->rc.i_qp_min, p->rc.i_qp_max, p->rc.i_qp_step );
859 if( p->rc.b_stat_read )
860 s += sprintf( s, " cplxblur=%.1f qblur=%.1f",
861 p->rc.f_complexity_blur, p->rc.f_qblur );
862 if( p->rc.i_vbv_buffer_size )
863 s += sprintf( s, " vbv_maxrate=%d vbv_bufsize=%d",
864 p->rc.i_vbv_max_bitrate, p->rc.i_vbv_buffer_size );
866 else if( p->rc.i_rc_method == X264_RC_CQP )
867 s += sprintf( s, " qp=%d", p->rc.i_qp_constant );
868 if( !(p->rc.i_rc_method == X264_RC_CQP && p->rc.i_qp_constant == 0) )
870 s += sprintf( s, " ip_ratio=%.2f", p->rc.f_ip_factor );
872 s += sprintf( s, " pb_ratio=%.2f", p->rc.f_pb_factor );
873 s += sprintf( s, " aq=%d", p->rc.i_aq_mode );
874 if( p->rc.i_aq_mode )
875 s += sprintf( s, ":%.2f", p->rc.f_aq_strength );
876 if( p->rc.psz_zones )
877 s += sprintf( s, " zones=%s", p->rc.psz_zones );
878 else if( p->rc.i_zones )
879 s += sprintf( s, " zones" );