1 /* $Id: common.c,v 1.15 2005/03/17 19:22:47 titer Exp $
3 This file is part of the HandBrake source code.
4 Homepage: <http://handbrake.fr/>.
5 It may be used under the terms of the GNU General Public License. */
13 /**********************************************************************
15 *********************************************************************/
16 hb_rate_t hb_video_rates[] =
17 { { "5", 5400000 }, { "10", 2700000 }, { "12", 2250000 },
18 { "15", 1800000 }, { "23.976", 1126125 }, { "24", 1125000 },
19 { "25", 1080000 }, { "29.97", 900900 } };
20 int hb_video_rates_count = sizeof( hb_video_rates ) /
23 hb_rate_t hb_audio_rates[] =
24 { { "22.05", 22050 }, { "24", 24000 }, { "32", 32000 },
25 { "44.1", 44100 }, { "48", 48000 } };
26 int hb_audio_rates_count = sizeof( hb_audio_rates ) /
28 int hb_audio_rates_default = 3; /* 44100 Hz */
30 hb_rate_t hb_audio_bitrates[] =
31 { { "32", 32 }, { "40", 40 }, { "48", 48 }, { "56", 56 },
32 { "64", 64 }, { "80", 80 }, { "96", 96 }, { "112", 112 },
33 { "128", 128 }, { "160", 160 }, { "192", 192 }, { "224", 224 },
34 { "256", 256 }, { "320", 320 }, { "384", 384 } };
35 int hb_audio_bitrates_count = sizeof( hb_audio_bitrates ) /
37 int hb_audio_bitrates_default = 8; /* 128 kbps */
39 static hb_error_handler_t *error_handler = NULL;
41 hb_mixdown_t hb_audio_mixdowns[] =
42 { { "Mono", "HB_AMIXDOWN_MONO", "mono", HB_AMIXDOWN_MONO },
43 { "Stereo", "HB_AMIXDOWN_STEREO", "stereo", HB_AMIXDOWN_STEREO },
44 { "Dolby Surround", "HB_AMIXDOWN_DOLBY", "dpl1", HB_AMIXDOWN_DOLBY },
45 { "Dolby Pro Logic II", "HB_AMIXDOWN_DOLBYPLII", "dpl2", HB_AMIXDOWN_DOLBYPLII },
46 { "6-channel discrete", "HB_AMIXDOWN_6CH", "6ch", HB_AMIXDOWN_6CH }
48 int hb_audio_mixdowns_count = sizeof( hb_audio_mixdowns ) /
49 sizeof( hb_mixdown_t );
51 int hb_mixdown_get_mixdown_from_short_name( const char * short_name )
54 for (i = 0; i < hb_audio_mixdowns_count; i++)
56 if (strcmp(hb_audio_mixdowns[i].short_name, short_name) == 0)
58 return hb_audio_mixdowns[i].amixdown;
64 const char * hb_mixdown_get_short_name_from_mixdown( int amixdown )
67 for (i = 0; i < hb_audio_mixdowns_count; i++)
69 if (hb_audio_mixdowns[i].amixdown == amixdown)
71 return hb_audio_mixdowns[i].short_name;
77 /**********************************************************************
79 **********************************************************************
80 * Given a numerator (num) and a denominator (den), reduce them to an
81 * equivalent fraction and store the result in x and y.
82 *********************************************************************/
83 void hb_reduce( int *x, int *y, int num, int den )
85 int lower = MIN( num, den );
89 for( i = lower - 1; i > 1; --i )
91 if( ( num % i == 0 ) && ( den % i == 0 ) )
100 /**********************************************************************
102 **********************************************************************
103 * Given the output width (if HB_KEEP_WIDTH) or height
104 * (HB_KEEP_HEIGHT) and the current crop values, calculates the
105 * correct height or width in order to respect the DVD aspect ratio
106 *********************************************************************/
107 void hb_fix_aspect( hb_job_t * job, int keep )
109 hb_title_t * title = job->title;
112 /* don't do anything unless the title has complete size info */
113 if ( title->height == 0 || title->width == 0 || title->aspect == 0 )
115 hb_log( "hb_fix_aspect: incomplete info for title %d: "
116 "height = %d, width = %d, aspect = %d",
117 title->height, title->width, title->aspect );
122 Widths and heights must be multiples of 16 and greater than or
124 Crop values must be multiples of 2, greater than or equal to 0
125 and less than half of the dimension */
126 job->width = MULTIPLE_16( job->width );
127 job->height = MULTIPLE_16( job->height );
128 job->width = MAX( 16, job->width );
129 job->height = MAX( 16, job->height );
130 for( i = 0; i < 4; i++ )
132 job->crop[i] = EVEN( job->crop[i] );
133 job->crop[i] = MAX( 0, job->crop[i] );
137 job->crop[i] = MIN( job->crop[i], ( title->height / 2 ) - 2 );
142 job->crop[i] = MIN( job->crop[i], ( title->width / 2 ) - 2 );
146 if( keep == HB_KEEP_WIDTH )
148 job->height = MULTIPLE_16(
149 (uint64_t) job->width * title->width * HB_ASPECT_BASE *
150 ( title->height - job->crop[0] - job->crop[1] ) /
151 ( (uint64_t) title->height * title->aspect *
152 ( title->width - job->crop[2] - job->crop[3] ) ) );
153 job->height = MAX( 16, job->height );
157 job->width = MULTIPLE_16(
158 (uint64_t) job->height * title->height * title->aspect *
159 ( title->width - job->crop[2] - job->crop[3] ) /
160 ( (uint64_t) title->width * HB_ASPECT_BASE *
161 ( title->height - job->crop[0] - job->crop[1] ) ) );
162 job->width = MAX( 16, job->width );
166 /**********************************************************************
168 **********************************************************************
170 *********************************************************************/
171 int hb_calc_bitrate( hb_job_t * job, int size )
173 int64_t avail = (int64_t) size * 1024 * 1024;
176 int samples_per_frame;
179 hb_title_t * title = job->title;
180 hb_chapter_t * chapter;
183 /* How many overhead bytes are used for each frame
203 /* Get the duration in seconds */
205 for( i = job->chapter_start; i <= job->chapter_end; i++ )
207 chapter = hb_list_item( title->list_chapter, i - 1 );
208 length += chapter->duration;
214 avail -= length * job->vrate * overhead / job->vrate_base;
216 for( i = 0; i < hb_list_count(job->list_audio); i++ )
220 audio = hb_list_item( job->list_audio, i);
222 /* How many audio samples we put in each frame */
223 switch( audio->config.out.codec )
226 case HB_ACODEC_VORBIS:
227 samples_per_frame = 1024;
230 samples_per_frame = 1152;
233 samples_per_frame = 1536;
239 if( audio->config.out.codec == HB_ACODEC_AC3 ||
240 audio->config.out.codec == HB_ACODEC_DCA)
243 * For pass through we take the bitrate from the input audio
244 * bitrate as we are simply passing it through.
246 abitrate = audio->config.in.bitrate / 8;
251 * Where we are transcoding the audio we use the destination
254 abitrate = audio->config.out.bitrate * 1000 / 8;
256 avail -= length * abitrate;
259 avail -= length * audio->config.out.samplerate * overhead / samples_per_frame;
267 return ( avail / ( 125 * length ) );
270 /**********************************************************************
271 * hb_list implementation
272 **********************************************************************
273 * Basic and slow, but enough for what we need
274 *********************************************************************/
276 #define HB_LIST_DEFAULT_SIZE 20
280 /* Pointers to items in the list */
283 /* How many (void *) allocated in 'items' */
286 /* How many valid pointers in 'items' */
290 /**********************************************************************
292 **********************************************************************
293 * Allocates an empty list ready for HB_LIST_DEFAULT_SIZE items
294 *********************************************************************/
295 hb_list_t * hb_list_init()
299 l = calloc( sizeof( hb_list_t ), 1 );
300 l->items = calloc( HB_LIST_DEFAULT_SIZE * sizeof( void * ), 1 );
301 l->items_alloc = HB_LIST_DEFAULT_SIZE;
306 /**********************************************************************
308 **********************************************************************
309 * Returns the number of items currently in the list
310 *********************************************************************/
311 int hb_list_count( hb_list_t * l )
313 return l->items_count;
316 /**********************************************************************
318 **********************************************************************
319 * Adds an item at the end of the list, making it bigger if necessary.
320 * Can safely be called with a NULL pointer to add, it will be ignored.
321 *********************************************************************/
322 void hb_list_add( hb_list_t * l, void * p )
329 if( l->items_count == l->items_alloc )
331 /* We need a bigger boat */
332 l->items_alloc += HB_LIST_DEFAULT_SIZE;
333 l->items = realloc( l->items,
334 l->items_alloc * sizeof( void * ) );
337 l->items[l->items_count] = p;
341 /**********************************************************************
343 **********************************************************************
344 * Remove an item from the list. Bad things will happen if called
345 * with a NULL pointer or if the item is not in the list.
346 *********************************************************************/
347 void hb_list_rem( hb_list_t * l, void * p )
351 /* Find the item in the list */
352 for( i = 0; i < l->items_count; i++ )
354 if( l->items[i] == p )
360 /* Shift all items after it sizeof( void * ) bytes earlier */
361 memmove( &l->items[i], &l->items[i+1],
362 ( l->items_count - i - 1 ) * sizeof( void * ) );
367 /**********************************************************************
369 **********************************************************************
370 * Returns item at position i, or NULL if there are not that many
372 *********************************************************************/
373 void * hb_list_item( hb_list_t * l, int i )
375 if( i < 0 || i >= l->items_count )
383 /**********************************************************************
385 **********************************************************************
386 * Assuming all items are of type hb_buffer_t, returns the total
387 * number of bytes in the list
388 *********************************************************************/
389 int hb_list_bytes( hb_list_t * l )
396 for( i = 0; i < hb_list_count( l ); i++ )
398 buf = hb_list_item( l, i );
399 ret += buf->size - buf->cur;
405 /**********************************************************************
407 **********************************************************************
408 * Assuming all items are of type hb_buffer_t, copy <size> bytes from
409 * the list to <dst>, keeping the list unmodified.
410 *********************************************************************/
411 void hb_list_seebytes( hb_list_t * l, uint8_t * dst, int size )
418 for( i = 0, copied = 0; copied < size; i++ )
420 buf = hb_list_item( l, i );
421 copying = MIN( buf->size - buf->cur, size - copied );
422 memcpy( &dst[copied], &buf->data[buf->cur], copying );
427 /**********************************************************************
429 **********************************************************************
430 * Assuming all items are of type hb_buffer_t, copy <size> bytes from
431 * the list to <dst>. What's copied is removed from the list.
432 * The variable pointed by <pts> is set to the PTS of the buffer the
433 * first byte has been got from.
434 * The variable pointed by <pos> is set to the position of that byte
436 *********************************************************************/
437 void hb_list_getbytes( hb_list_t * l, uint8_t * dst, int size,
438 uint64_t * pts, uint64_t * pos )
445 /* So we won't have to deal with NULL pointers */
446 uint64_t dummy1, dummy2;
448 if( !pts ) pts = &dummy1;
449 if( !pos ) pos = &dummy2;
451 for( copied = 0, has_pts = 0; copied < size; )
453 buf = hb_list_item( l, 0 );
454 copying = MIN( buf->size - buf->cur, size - copied );
455 memcpy( &dst[copied], &buf->data[buf->cur], copying );
465 if( buf->cur >= buf->size )
467 hb_list_rem( l, buf );
468 hb_buffer_close( &buf );
475 /**********************************************************************
477 **********************************************************************
478 * Assuming all items are of type hb_buffer_t, close them all and
480 *********************************************************************/
481 void hb_list_empty( hb_list_t ** _l )
486 while( ( b = hb_list_item( l, 0 ) ) )
489 hb_buffer_close( &b );
495 /**********************************************************************
497 **********************************************************************
498 * Free memory allocated by hb_list_init. Does NOT free contents of
499 * items still in the list.
500 *********************************************************************/
501 void hb_list_close( hb_list_t ** _l )
511 /**********************************************************************
513 **********************************************************************
514 * If verbose mode is one, print message with timestamp. Messages
515 * longer than 180 characters are stripped ;p
516 *********************************************************************/
517 void hb_log( char * log, ... )
519 char string[362]; /* 360 chars + \n + \0 */
524 if( !getenv( "HB_DEBUG" ) )
526 /* We don't want to print it */
532 now = localtime( &_now );
533 sprintf( string, "[%02d:%02d:%02d] ",
534 now->tm_hour, now->tm_min, now->tm_sec );
536 /* Convert the message to a string */
537 va_start( args, log );
538 vsnprintf( string + 11, 349, log, args );
541 /* Add the end of line */
542 strcat( string, "\n" );
545 fprintf( stderr, "%s", string );
548 /**********************************************************************
550 **********************************************************************
551 * Using whatever output is available display this error.
552 *********************************************************************/
553 void hb_error( char * log, ... )
555 char string[181]; /* 180 chars + \0 */
558 /* Convert the message to a string */
559 va_start( args, log );
560 vsnprintf( string, 180, log, args );
564 * Got the error in a single string, send it off to be dispatched.
568 error_handler( string );
574 void hb_register_error_handler( hb_error_handler_t * handler )
576 error_handler = handler;
579 /**********************************************************************
581 **********************************************************************
583 *********************************************************************/
584 hb_title_t * hb_title_init( char * dvd, int index )
588 t = calloc( sizeof( hb_title_t ), 1 );
591 t->list_audio = hb_list_init();
592 t->list_chapter = hb_list_init();
593 t->list_subtitle = hb_list_init();
594 strcat( t->dvd, dvd );
595 // default to decoding mpeg2
597 t->video_codec = WORK_DECMPEG2;
602 /**********************************************************************
604 **********************************************************************
606 *********************************************************************/
607 void hb_title_close( hb_title_t ** _t )
609 hb_title_t * t = *_t;
611 hb_chapter_t * chapter;
612 hb_subtitle_t * subtitle;
614 while( ( audio = hb_list_item( t->list_audio, 0 ) ) )
616 hb_list_rem( t->list_audio, audio );
619 hb_list_close( &t->list_audio );
621 while( ( chapter = hb_list_item( t->list_chapter, 0 ) ) )
623 hb_list_rem( t->list_chapter, chapter );
626 hb_list_close( &t->list_chapter );
628 while( ( subtitle = hb_list_item( t->list_subtitle, 0 ) ) )
630 hb_list_rem( t->list_subtitle, subtitle );
633 hb_list_close( &t->list_subtitle );
639 /**********************************************************************
641 **********************************************************************
643 *********************************************************************/
644 void hb_filter_close( hb_filter_object_t ** _f )
646 hb_filter_object_t * f = *_f;
648 f->close( f->private_data );
659 /**********************************************************************
661 **********************************************************************
663 *********************************************************************/
664 hb_audio_t *hb_audio_copy(const hb_audio_t *src)
666 hb_audio_t *audio = calloc(1, sizeof(*audio));
667 memcpy(audio, src, sizeof(*audio));
671 /**********************************************************************
673 **********************************************************************
675 *********************************************************************/
676 void hb_audio_config_init(hb_audio_config_t * audiocfg)
678 /* Set read only paramaters to invalid values */
679 audiocfg->in.codec = 0xDEADBEEF;
680 audiocfg->in.bitrate = -1;
681 audiocfg->in.samplerate = -1;
682 audiocfg->in.channel_layout = 0;
683 audiocfg->flags.ac3 = 0;
684 audiocfg->lang.description[0] = 0;
685 audiocfg->lang.simple[0] = 0;
686 audiocfg->lang.iso639_2[0] = 0;
688 /* Initalize some sensable defaults */
689 audiocfg->in.track = audiocfg->out.track = 0;
690 audiocfg->out.codec = HB_ACODEC_FAAC;
691 audiocfg->out.bitrate = 128;
692 audiocfg->out.samplerate = 44100;
693 audiocfg->out.mixdown = HB_AMIXDOWN_DOLBYPLII;
694 audiocfg->out.dynamic_range_compression = 0;
697 /**********************************************************************
699 **********************************************************************
701 *********************************************************************/
702 int hb_audio_add(const hb_job_t * job, const hb_audio_config_t * audiocfg)
704 hb_title_t *title = job->title;
707 audio = hb_audio_copy( hb_list_item( title->list_audio, audiocfg->in.track ) );
714 if( (audiocfg->in.bitrate != -1) && (audiocfg->in.codec != 0xDEADBEEF) )
716 /* This most likely means the client didn't call hb_audio_config_init
722 /* Really shouldn't ignore the passed out track, but there is currently no
723 * way to handle duplicates or out-of-order track numbers.
725 audio->config.out.track = hb_list_count(job->list_audio) + 1;
726 audio->config.out.codec = audiocfg->out.codec;
727 if( audiocfg->out.codec == audio->config.in.codec )
729 /* Pass-through, copy from input. */
730 audio->config.out.samplerate = audio->config.in.samplerate;
731 audio->config.out.bitrate = audio->config.in.bitrate;
732 audio->config.out.dynamic_range_compression = 0;
733 audio->config.out.mixdown = 0;
737 /* Non pass-through, use what is given. */
738 audio->config.out.samplerate = audiocfg->out.samplerate;
739 audio->config.out.bitrate = audiocfg->out.bitrate;
740 audio->config.out.dynamic_range_compression = audiocfg->out.dynamic_range_compression;
741 audio->config.out.mixdown = audiocfg->out.mixdown;
744 hb_list_add(job->list_audio, audio);
748 hb_audio_config_t * hb_list_audio_config_item(hb_list_t * list, int i)
750 hb_audio_t *audio = NULL;
752 if( (audio = hb_list_item(list, i)) )
753 return &(audio->config);