1 /* mpeg2enc.c, main() and parameter file reading */
3 /* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
6 * Disclaimer of Warranty
8 * These software programs are available to the user without any license fee or
9 * royalty on an "as is" basis. The MPEG Software Simulation Group disclaims
10 * any and all warranties, whether express, implied, or statuary, including any
11 * implied warranties or merchantability or of fitness for a particular
12 * purpose. In no event shall the copyright-holder be liable for any
13 * incidental, punitive, or consequential damages of any kind whatsoever
14 * arising from the use of these programs.
16 * This disclaimer of warranty extends to the user of these programs and user's
17 * customers, employees, agents, transferees, successors, and assigns.
19 * The MPEG Software Simulation Group does not represent or warrant that the
20 * programs furnished hereunder are free of infringement of any third-party
23 * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
24 * are subject to royalty fees to patent holders. Many of these patents are
25 * general enough such that they are unavoidable regardless of implementation
30 #define MAX(a,b) ( (a)>(b) ? (a) : (b) )
36 #define GLOBAL_ /* used by global.h */
40 /* private prototypes */
41 static void init _ANSI_ARGS_((void));
42 static void readcmdline _ANSI_ARGS_((int argc, char *argv[]));
43 static void readquantmat _ANSI_ARGS_((void));
46 // Hack for libdv to remove glib dependancy
49 g_log (const char *log_domain,
57 g_logv (const char *log_domain,
65 void mpeg2enc_set_w(int width)
67 horizontal_size = width;
70 void mpeg2enc_set_h(int height)
72 vertical_size = height;
75 void mpeg2enc_set_rate(double rate)
77 input_frame_rate = rate;
80 void mpeg2enc_set_input_buffers(int eof, char *y, char *u, char *v)
82 pthread_mutex_lock(&output_lock);
83 input_buffer_end = eof;
87 pthread_mutex_unlock(&input_lock);
88 // Wait for buffers to get copied before returning.
89 pthread_mutex_lock(©_lock);
92 void mpeg2enc_init_buffers()
94 pthread_mutex_init(&input_lock, 0);
95 pthread_mutex_init(&output_lock, 0);
96 pthread_mutex_init(©_lock, 0);
97 pthread_mutex_lock(&input_lock);
98 pthread_mutex_lock(©_lock);
102 int mpeg2enc(int argc, char *argv[])
109 /* Read command line */
110 readcmdline(argc, argv);
112 /* read quantization matrices */
115 if(!strlen(out_path))
117 fprintf(stderr, "No output file given.\n");
120 /* open output file */
121 if(!(outfile = fopen(out_path, "wb")))
123 sprintf(errortext,"Couldn't create output file %s", out_path);
129 if(nframes < 0x7fffffff)
130 printf("Frame Completion Current bitrate Predicted file size\n");
133 stop_slice_engines();
134 stop_motion_engines();
135 stop_transform_engines();
136 stop_itransform_engines();
141 if(qt_file) quicktime_close(qt_file);
142 if(qt_output) quicktime_close(qt_output);
143 if(mpeg_file) mpeg3_close(mpeg_file);
149 pthread_mutex_destroy(&input_lock);
150 pthread_mutex_destroy(&output_lock);
154 int HorzMotionCode(int i)
162 if ((i < 64) || (constrparms))
168 if ((i < 512) || (level == 10))
170 if ((i < 1024) || (level == 8))
177 int VertMotionCode(int i)
185 if ((i < 64) || (level == 10) || (constrparms))
191 Wrapper for malloc that allocates pbuffers aligned to the
192 specified byte boundary and checks for failure.
193 N.b. don't try to free the resulting pointers, eh...
194 BUG: Of course this won't work if a char * won't fit in an int....
196 static uint8_t *bufalloc( size_t size )
198 char *buf = malloc( size + BUFFER_ALIGN );
203 error("malloc failed\n");
205 adjust = ((unsigned long)buf) & (BUFFER_ALIGN-1);
206 if( adjust ) adjust = BUFFER_ALIGN - adjust;
207 memset(buf += adjust, 0, size);
208 return (uint8_t*)buf;
214 static int block_count_tab[3] = {6,8,12};
215 int lum_buffer_size, chrom_buffer_size;
216 pthread_mutexattr_t mutex_attr;
217 pthread_mutexattr_init(&mutex_attr);
218 pthread_mutex_init(&test_lock, &mutex_attr);
220 bzero(&cur_picture, sizeof(pict_data_s));
229 /* round picture dimensions to nZearest multiple of 16 or 32 */
230 mb_width = (horizontal_size+15)/16;
231 mb_height = prog_seq ?
232 (vertical_size + 15) / 16 :
233 2 * ((vertical_size + 31) / 32);
234 mb_height2 = fieldpic ?
236 mb_height; /* for field pictures */
237 width = 16 * mb_width;
238 height = 16 * mb_height;
240 chrom_width = (chroma_format==CHROMA444) ? width : width>>1;
241 chrom_height = (chroma_format!=CHROMA420) ? height : height>>1;
243 height2 = fieldpic ? height>>1 : height;
244 width2 = fieldpic ? width<<1 : width;
245 chrom_width2 = fieldpic ? chrom_width<<1 : chrom_width;
247 block_count = block_count_tab[chroma_format-1];
248 lum_buffer_size = (width*height) +
249 sizeof(uint8_t) *(width/2)*(height/2) +
250 sizeof(uint8_t) *(width/4)*(height/4+1);
251 chrom_buffer_size = chrom_width*chrom_height;
253 fsubsample_offset = (width)*(height) * sizeof(uint8_t);
254 qsubsample_offset = fsubsample_offset + (width/2)*(height/2)*sizeof(uint8_t);
259 mb_per_pict = mb_width*mb_height2;
262 if (!(clp = (unsigned char *)malloc(1024)))
263 error("malloc failed\n");
265 for (i=-384; i<640; i++)
266 clp[i] = (i<0) ? 0 : ((i>255) ? 255 : i);
270 /* Allocate the frame buffer */
273 frame_buffers = (uint8_t ***)
274 bufalloc(2*READ_LOOK_AHEAD*sizeof(uint8_t**));
276 for(n=0;n<2*READ_LOOK_AHEAD;n++)
278 frame_buffers[n] = (uint8_t **) bufalloc(3*sizeof(uint8_t*));
281 frame_buffers[n][i] =
282 bufalloc( (i==0) ? lum_buffer_size : chrom_buffer_size );
288 /* TODO: The ref and aux frame buffers are no redundant! */
289 for( i = 0 ; i<3; i++)
291 int size = (i==0) ? lum_buffer_size : chrom_buffer_size;
292 newrefframe[i] = bufalloc(size);
293 oldrefframe[i] = bufalloc(size);
294 auxframe[i] = bufalloc(size);
295 predframe[i] = bufalloc(size);
298 cur_picture.qblocks =
299 (int16_t (*)[64])bufalloc(mb_per_pict*block_count*sizeof(int16_t [64]));
301 /* Initialise current transformed picture data tables
302 These will soon become a buffer for transformed picture data to allow
303 look-ahead for bit allocation etc.
305 cur_picture.mbinfo = (
306 struct mbinfo *)bufalloc(mb_per_pict*sizeof(struct mbinfo));
309 (int16_t (*)[64])bufalloc(mb_per_pict * block_count * sizeof(int16_t [64]));
312 /* open statistics output file */
313 if(statname[0]=='-') statfile = stdout;
315 if(!(statfile = fopen(statname,"w")))
317 sprintf(errortext,"Couldn't create statistics output file %s",statname);
321 ratectl = malloc(processors * sizeof(ratectl_t*));
322 for(i = 0; i < processors; i++)
323 ratectl[i] = calloc(1, sizeof(ratectl_t));
327 /* Start parallel threads */
329 //printf("init 1\n");
330 start_motion_engines();
331 //printf("init 2\n");
332 start_transform_engines();
333 //printf("init 3\n");
334 start_itransform_engines();
335 //printf("init 4\n");
336 start_slice_engines();
337 //printf("init 5\n");
343 fprintf(stderr,text);
348 #define STRINGLEN 254
352 /* Get processor count */
355 if(proc = fopen("/proc/cpuinfo", "r"))
360 fgets(string, 1024, proc);
361 if(!strncasecmp(string, "processor", 9))
363 char *ptr = strchr(string, ':');
367 result = atol(ptr) + 1;
371 if(!strncasecmp(string, "cpus detected", 13))
373 char *ptr = strchr(string, ':');
386 static void readcmdline(int argc, char *argv[])
392 // Master frame rate table must match decoder
393 static double ratetab[]=
394 {24000.0/1001.0, // Official rates
403 1, // Unofficial economy rates
410 // VBV buffer size limits
411 int vbvlim[4] = { 597, 448, 112, 29 };
412 long total_frame_rates = (sizeof(ratetab) / sizeof(double));
415 int param_searchrad = 16;
418 //printf("readcmdline 1\n");
419 frame0 = 0; /* number of first frame */
420 start_frame = end_frame = -1;
422 use_denoise_quant = 0;
424 bit_rate = 5000000; /* default bit_rate (bits/s) */
425 prog_seq = 0; /* progressive_sequence is faster */
426 mpeg1 = 0; /* ISO/IEC 11172-2 stream */
427 fixed_mquant = 0; /* vary the quantization */
430 N = 15; /* N (# of frames in GOP) */
431 M = 1; /* M (I/P frame distance) */
432 processors = calculate_smp();
434 chroma_format = 1; /* chroma_format: 1=4:2:0, 2=4:2:2, 3=4:4:4 LibMPEG3 only does 1 */
439 seq_header_every_gop = 0;
440 /* aspect_ratio_information 1=square pel, 2=4:3, 3=16:9, 4=2.11:1 */
447 //printf("readcmdline 2\n");
451 sprintf(out_path, "");
453 #define INTTOYES(x) ((x) ? "Yes" : "No")
454 // This isn't used anymore as this is a library entry point.
457 printf("mpeg2encode V1.3, 2000/01/10\n"
458 "(C) 1996, MPEG Software Simulation Group\n"
459 "(C) 2001 Heroine Virtual\n"
460 "Usage: %s [options] <input file> <output file>\n\n"
461 " -1 generate an MPEG-1 stream instead of MPEG-2 (%s)\n"
462 " -422 generate YUV 4:2:2 output\n"
463 " -b bitrate fix the bitrate, vary the quantization (%d)\n"
465 " -f rate Convert framerate\n"
466 " -h High resolution quantization table (%s)\n"
467 " -m frames set number of frames between P frames (%d)\n"
468 " -n frames set number of frames between I frames (%d)\n"
469 " -p encode progressive frames (%s)\n"
470 " -q quantization fix the quantization, vary the bitrate\n"
471 " [number] Start encoding from frame number to end\n"
472 " [number1] [number2] Encode frame number 1 to frame number 2\n"
473 " -u Use only 1 processor\n\n"
474 "Default settings:\n"
475 " fixed 5000000 bits/sec\n"
478 " 15 frames between I frames 0 frames between P frames\n\n"
479 "For the recommended encoding parameters see docs/index.html.\n",
481 mpeg1 ? "MPEG-1" : "MPEG-2",
483 INTTOYES(use_denoise_quant),
484 INTTOYES(use_hires_quant),
490 //printf("readcmdline 3\n");
492 for(i = 1; i < argc; i++)
496 for(j = 0; j < strlen(argv[i]) && isnum; j++)
498 if(isalpha(argv[i][j])) isnum = 0;
502 //printf("readcmdline %s\n", argv[i]);
503 if(!strcmp(argv[i], "-1"))
508 if(!strcmp(argv[i], "-a"))
513 aspectratio = atoi(argv[i]);
517 fprintf(stderr, "-i needs an aspect ratio enumeration.\n");
522 if(!strcmp(argv[i], "-b"))
527 bit_rate = atol(argv[i]);
531 fprintf(stderr, "-b requires a bitrate\n");
536 if(!strcmp(argv[i], "-d"))
538 use_denoise_quant = 1;
541 if(!strcmp(argv[i], "-f"))
546 frame_rate = atof(argv[i]);
550 fprintf(stderr, "-f requires a frame rate\n");
555 if(!strcmp(argv[i], "-h"))
560 if(!strcmp(argv[i], "-m"))
565 M = atol(argv[i]) + 1;
569 fprintf(stderr, "-m requires a frame count\n");
574 if(!strcmp(argv[i], "-n"))
583 fprintf(stderr, "-n requires a frame count\n");
588 if(!strcmp(argv[i], "-p"))
593 if(!strcmp(argv[i], "-q"))
598 fixed_mquant = atol(argv[i]);
602 fprintf(stderr, "-q requires a quantization value\n");
607 if(!strcmp(argv[i], "-u"))
612 if(!strcmp(argv[i], "-422"))
617 if(!strcmp(argv[i], "-g"))
619 seq_header_every_gop = 1;
622 if(!strcmp(argv[i], "-"))
627 /* Start or end frame if number */
631 start_frame = atol(argv[i]);
634 end_frame = atol(argv[i]);
637 if(!strlen(tplorg) && !do_stdin && !do_buffers)
640 strncpy(tplorg, argv[i], STRINGLEN);
643 if(!strlen(out_path))
646 strncpy(out_path, argv[i], STRINGLEN);
649 //printf("readcmdline 4\n");
651 if(!strlen(out_path))
653 // Default output path
654 strncpy(out_path, tplorg, STRINGLEN);
655 for(i = strlen(out_path) - 1; i >= 0 && out_path[i] != '.'; i--)
658 if(i < 0) i = strlen(out_path);
661 sprintf(&out_path[i], ".m1v");
663 sprintf(&out_path[i], ".m2v");
665 //printf("readcmdline 5\n");
667 /* Get info from input file */
675 inputtype = T_BUFFERS;
678 if(mpeg3_check_sig(tplorg))
681 mpeg_file = mpeg3_open(tplorg, &error_return);
685 if(quicktime_check_sig(tplorg))
687 qt_file = quicktime_open(tplorg, 1, 0);
688 inputtype = T_QUICKTIME;
690 //printf("readcmdline 6\n");
692 if(!qt_file && !mpeg_file && !do_stdin && !do_buffers)
694 fprintf(stderr, "File format not recognized.\n");
698 //printf("readcmdline 7\n");
701 if(!quicktime_video_tracks(qt_file))
703 fprintf(stderr, "No video tracks in file.\n");
707 if(!quicktime_supported_video(qt_file, 0))
709 fprintf(stderr, "Unsupported video codec.\n");
713 //printf("readcmdline 8\n");
715 /************************************************************************
716 * BEGIN PARAMETER FILE
717 ************************************************************************/
719 /* To eliminate the user hassle we replaced the parameter file with hard coded constants. */
720 strcpy(tplref, "-"); /* name of intra quant matrix file ("-": default matrix) */
721 strcpy(iqname, "-"); /* name of intra quant matrix file ("-": default matrix) */
722 strcpy(niqname, "-"); /* name of non intra quant matrix file ("-": default matrix) */
723 strcpy(statname, "/dev/null"); /* name of statistics file ("-": stdout ) */
727 nframes = quicktime_video_length(qt_file, 0); /* number of frames */
728 horizontal_size = quicktime_video_width(qt_file, 0);
729 vertical_size = quicktime_video_height(qt_file, 0);
734 nframes = 0x7fffffff; /* Use percentage instead */
735 horizontal_size = mpeg3_video_width(mpeg_file, 0);
736 vertical_size = mpeg3_video_height(mpeg_file, 0);
741 unsigned char data[1024];
742 nframes = 0x7fffffff;
744 fgets(data, 1024, stdin_fd);
745 horizontal_size = atol(data);
746 fgets(data, 1024, stdin_fd);
747 vertical_size = atol(data);
752 nframes = 0x7fffffff;
756 h = m = s = f = 0; /* timecode of first frame */
757 fieldpic = 0; /* 0: progressive, 1: bottom first, 2: top first, 3 = progressive seq, field MC and DCT in picture */
758 low_delay = 0; /* low_delay */
759 constrparms = 0; /* constrained_parameters_flag */
760 profile = 4; /* Profile ID: Simple = 5, Main = 4, SNR = 3, Spatial = 2, High = 1 */
761 level = 4; /* Level ID: Low = 10, Main = 8, High 1440 = 6, High = 4 */
762 video_format = 2; /* video_format: 0=comp., 1=PAL, 2=NTSC, 3=SECAM, 4=MAC, 5=unspec. */
763 color_primaries = 5; /* color_primaries */
764 dctsatlim = mpeg1 ? 255 : 2047;
766 transfer_characteristics = 5; /* transfer_characteristics */
767 matrix_coefficients = 4; /* matrix_coefficients (not used) */
768 display_horizontal_size = horizontal_size;
769 display_vertical_size = vertical_size;
770 cur_picture.dc_prec = 0; /* intra_dc_precision (0: 8 bit, 1: 9 bit, 2: 10 bit, 3: 11 bit */
771 cur_picture.topfirst = 1; /* top_field_first */
773 frame_pred_dct_tab[0] = mpeg1 ? 1 : 0; /* frame_pred_frame_dct (I P B) */
774 frame_pred_dct_tab[1] = mpeg1 ? 1 : 0; /* frame_pred_frame_dct (I P B) */
775 frame_pred_dct_tab[2] = mpeg1 ? 1 : 0; /* frame_pred_frame_dct (I P B) */
777 conceal_tab[0] = 0; /* concealment_motion_vectors (I P B) */
778 conceal_tab[1] = 0; /* concealment_motion_vectors (I P B) */
779 conceal_tab[2] = 0; /* concealment_motion_vectors (I P B) */
780 qscale_tab[0] = mpeg1 ? 0 : 1; /* q_scale_type (I P B) */
781 qscale_tab[1] = mpeg1 ? 0 : 1; /* q_scale_type (I P B) */
782 qscale_tab[2] = mpeg1 ? 0 : 1; /* q_scale_type (I P B) */
784 intravlc_tab[0] = 0; /* intra_vlc_format (I P B)*/
785 intravlc_tab[1] = 0; /* intra_vlc_format (I P B)*/
786 intravlc_tab[2] = 0; /* intra_vlc_format (I P B)*/
787 altscan_tab[0] = 0; /* alternate_scan_hv (I P B) */
788 altscan_tab[1] = 0; /* alternate_scan_hv (I P B) */
789 altscan_tab[2] = 0; /* alternate_scan_hv (I P B) */
790 opt_dc_prec = 0; /* 8 bits */
791 opt_topfirst = (fieldpic == 2);
793 opt_prog_frame = prog_seq;
794 cur_picture.repeatfirst = 0; /* repeat_first_field */
795 cur_picture.prog_frame = prog_seq; /* progressive_frame */
796 /* P: forw_hor_f_code forw_vert_f_code search_width/height */
797 motion_data = (struct motion_data *)malloc(3 * sizeof(struct motion_data));
798 video_buffer_size = 46 * 1024 * 8;
800 /************************************************************************
802 ************************************************************************/
803 //printf("readcmdline 10\n");
808 cur_picture.prog_frame = 1;
814 input_frame_rate = quicktime_frame_rate(qt_file, 0);
819 input_frame_rate = mpeg3_frame_rate(mpeg_file, 0);
826 fgets(data, 1024, stdin_fd);
828 input_frame_rate = atof(data);
834 frame_rate = input_frame_rate;
836 //printf("readcmdline 11\n");
840 if(start_frame >= 0 && end_frame >= 0)
842 nframes = end_frame - start_frame;
843 frame0 = start_frame;
849 nframes -= start_frame;
850 frame0 = start_frame;
857 //printf("readcmdline 12\n");
862 printf("Encoding: %s frames %ld\n", out_path, nframes);
864 if(fixed_mquant == 0)
865 printf(" bitrate %.0f\n", bit_rate);
867 printf(" quantization %d\n", fixed_mquant);
868 printf(" %d frames between I frames %d frames between P frames\n", N, M - 1);
869 printf(" %s\n", (prog_seq ? "progressive" : "interlaced"));
870 printf(" %s\n", (mpeg1 ? "MPEG-1" : "MPEG-2"));
871 printf(" %s\n", (chroma_format == 1) ? "YUV-420" : "YUV-422");
872 printf(" %d processors\n", processors);
873 printf(" %.02f frames per second\n", frame_rate);
874 printf(" Denoise %s\n", INTTOYES(use_denoise_quant));
875 printf(" Aspect ratio index %d\n", aspectratio);
876 printf(" Hires quantization %s\n", INTTOYES(use_hires_quant));
881 fprintf(stderr, "(MPEG to MPEG transcoding for official use only.)\n");
888 int radius_x = ((param_searchrad + 4) / 8) * 8;
889 int radius_y = ((param_searchrad * vertical_size / horizontal_size + 4) / 8) * 8;
892 /* TODO: These f-codes should really be adjusted for each
895 if( radius_x*M < 64) c = 4;
896 if( radius_x*M < 32) c = 3;
897 if( radius_x*M < 16) c = 2;
898 if( radius_x*M < 8) c = 1;
901 error("malloc failed\n");
907 motion_data[i].forw_hor_f_code = c;
908 motion_data[i].forw_vert_f_code = c;
909 motion_data[i].sxf = MAX(1,radius_x*M);
910 motion_data[i].syf = MAX(1,radius_y*M);
914 motion_data[i].forw_hor_f_code = c;
915 motion_data[i].forw_vert_f_code = c;
916 motion_data[i].sxf = MAX(1,radius_x*i);
917 motion_data[i].syf = MAX(1,radius_y*i);
918 motion_data[i].back_hor_f_code = c;
919 motion_data[i].back_vert_f_code = c;
920 motion_data[i].sxb = MAX(1,radius_x*(M-i));
921 motion_data[i].syb = MAX(1,radius_y*(M-i));
927 // vbv_buffer_size = floor(((double)bit_rate * 0.20343) / 16384.0);
929 vbv_buffer_size = 20 * 16384;
931 vbv_buffer_size = 112 * 16384;
937 if(vbv_buffer_size > vbvlim[(level - 4) >> 1])
938 vbv_buffer_size = vbvlim[(level - 4) >> 1];
940 /* Set up frame buffers */
941 frame_buffer = malloc(horizontal_size * vertical_size * 3 + 4);
942 row_pointers = malloc(sizeof(unsigned char*) * vertical_size);
943 for(i = 0; i < vertical_size; i++) row_pointers[i] = &frame_buffer[horizontal_size * 3 * i];
945 // Get frame rate code from input frame rate
946 for(i = 0; i < total_frame_rates; i++)
948 if(fabs(frame_rate - ratetab[i]) < 0.001) frame_rate_code = i + 1;
951 /* make flags boolean (x!=0 -> x=1) */
953 fieldpic = !!fieldpic;
954 low_delay = !!low_delay;
955 constrparms = !!constrparms;
956 prog_seq = !!prog_seq;
957 cur_picture.topfirst = !!cur_picture.topfirst;
959 for (i = 0; i < 3; i++)
961 frame_pred_dct_tab[i] = !!frame_pred_dct_tab[i];
962 conceal_tab[i] = !!conceal_tab[i];
963 qscale_tab[i] = !!qscale_tab[i];
964 intravlc_tab[i] = !!intravlc_tab[i];
965 altscan_tab[i] = !!altscan_tab[i];
967 cur_picture.repeatfirst = !!cur_picture.repeatfirst;
968 cur_picture.prog_frame = !!cur_picture.prog_frame;
970 /* make sure MPEG specific parameters are valid */
973 /* timecode -> frame number */
977 tc0 = (int)(frame_rate+0.5)*tc0 + f;
992 profile_and_level_checks();
999 if (horizontal_size>768
1000 || vertical_size>576
1001 || ((horizontal_size+15)/16)*((vertical_size+15) / 16) > 396
1002 || ((horizontal_size+15)/16)*((vertical_size+15) / 16)*frame_rate>396*25.0
1006 fprintf(stderr,"*** Warning: setting constrained_parameters_flag = 0\n");
1012 /* relational checks */
1021 if (chroma_format!=CHROMA420)
1023 chroma_format = CHROMA420;
1026 if (cur_picture.dc_prec!=0)
1028 cur_picture.dc_prec = 0;
1038 if (intravlc_tab[i])
1040 intravlc_tab[i] = 0;
1050 if (!mpeg1 && constrparms)
1055 if (prog_seq && !cur_picture.prog_frame)
1057 cur_picture.prog_frame = 1;
1060 if (cur_picture.prog_frame && fieldpic)
1065 if (!cur_picture.prog_frame && cur_picture.repeatfirst)
1067 cur_picture.repeatfirst = 0;
1070 if (cur_picture.prog_frame)
1073 if (!frame_pred_dct_tab[i])
1075 frame_pred_dct_tab[i] = 1;
1079 if (prog_seq && !cur_picture.repeatfirst && cur_picture.topfirst)
1082 fprintf(stderr,"Warning: setting top_field_first = 0\n");
1083 cur_picture.topfirst = 0;
1086 /* search windows */
1089 if (motion_data[i].sxf > (4<<motion_data[i].forw_hor_f_code)-1)
1093 "Warning: reducing forward horizontal search width to %d\n",
1094 (4<<motion_data[i].forw_hor_f_code)-1);
1095 motion_data[i].sxf = (4<<motion_data[i].forw_hor_f_code)-1;
1098 if (motion_data[i].syf > (4<<motion_data[i].forw_vert_f_code)-1)
1102 "Warning: reducing forward vertical search width to %d\n",
1103 (4<<motion_data[i].forw_vert_f_code)-1);
1104 motion_data[i].syf = (4<<motion_data[i].forw_vert_f_code)-1;
1109 if (motion_data[i].sxb > (4<<motion_data[i].back_hor_f_code)-1)
1113 "Warning: reducing backward horizontal search width to %d\n",
1114 (4<<motion_data[i].back_hor_f_code)-1);
1115 motion_data[i].sxb = (4<<motion_data[i].back_hor_f_code)-1;
1118 if (motion_data[i].syb > (4<<motion_data[i].back_vert_f_code)-1)
1122 "Warning: reducing backward vertical search width to %d\n",
1123 (4<<motion_data[i].back_vert_f_code)-1);
1124 motion_data[i].syb = (4<<motion_data[i].back_vert_f_code)-1;
1132 If the user has selected suppression of hf noise via
1133 quantisation then we boost quantisation of hf components
1134 EXPERIMENTAL: currently a linear ramp from 0 at 4pel to
1135 50% increased quantisation...
1138 static int quant_hfnoise_filt(int orgquant, int qmat_pos )
1140 int x = qmat_pos % 8;
1141 int y = qmat_pos / 8;
1144 if(!use_denoise_quant)
1149 /* Maximum 50% quantisation boost for HF components... */
1151 qboost += (256*(x-4)/3);
1153 qboost += (256*(y-4)/3);
1155 return (orgquant * qboost + 512)/ 1024;
1158 static void readquantmat()
1169 for (i=0; i<64; i++)
1171 intra_q[i] = hires_intra_quantizer_matrix_hv[i];
1176 load_iquant = use_denoise_quant;
1177 for (i=0; i<64; i++)
1179 v = quant_hfnoise_filt(default_intra_quantizer_matrix_hv[i], i);
1181 error("value in intra quant matrix invalid (after noise filt adjust)");
1187 /* TODO: Inv Quant matrix initialisation should check if the fraction fits in 16 bits! */
1188 if (niqname[0]=='-')
1192 for (i=0; i<64; i++)
1194 inter_q[i] = hires_nonintra_quantizer_matrix_hv[i];
1199 /* default non-intra matrix is all 16's. For *our* default we use something
1200 more suitable for domestic analog sources... which is non-standard...*/
1202 for (i=0; i<64; i++)
1204 v = quant_hfnoise_filt(default_nonintra_quantizer_matrix_hv[i],i);
1206 error("value in non-intra quant matrix invalid (after noise filt adjust)");
1212 for (i=0; i<64; i++)
1214 i_intra_q[i] = (int)(((double)IQUANT_SCALE) / ((double)intra_q[i]));
1215 i_inter_q[i] = (int)(((double)IQUANT_SCALE) / ((double)inter_q[i]));
1218 for( q = 1; q <= 112; ++q )
1220 for (i=0; i<64; i++)
1222 intra_q_tbl[q][i] = intra_q[i] * q;
1223 inter_q_tbl[q][i] = inter_q[i] * q;
1224 intra_q_tblf[q][i] = (float)intra_q_tbl[q][i];
1225 inter_q_tblf[q][i] = (float)inter_q_tbl[q][i];
1226 i_intra_q_tblf[q][i] = 1.0f/ ( intra_q_tblf[q][i] * 0.98);
1227 i_intra_q_tbl[q][i] = (IQUANT_SCALE/intra_q_tbl[q][i]);
1228 i_inter_q_tblf[q][i] = 1.0f/ (inter_q_tblf[q][i] * 0.98);
1229 i_inter_q_tbl[q][i] = (IQUANT_SCALE/inter_q_tbl[q][i] );