2 * valerie.c -- High Level Client API for miracle
3 * Copyright (C) 2002-2003 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 /* System header files */
27 /* Application header files */
29 #include "valerie_tokeniser.h"
30 #include "valerie_util.h"
32 /** Initialise the valerie structure.
35 valerie valerie_init( valerie_parser parser )
37 valerie this = malloc( sizeof( valerie_t ) );
40 memset( this, 0, sizeof( valerie_t ) );
41 this->parser = parser;
46 /** Set the response structure associated to the last command.
49 static void valerie_set_last_response( valerie this, valerie_response response )
53 if ( this->last_response != NULL )
54 valerie_response_close( this->last_response );
55 this->last_response = response;
59 /** Connect to the parser.
62 valerie_error_code valerie_connect( valerie this )
64 valerie_error_code error = valerie_server_unavailable;
65 valerie_response response = valerie_parser_connect( this->parser );
66 if ( response != NULL )
68 valerie_set_last_response( this, response );
69 if ( valerie_response_get_error_code( response ) == 100 )
75 /** Interpret a non-context sensitive error code.
78 static valerie_error_code valerie_get_error_code( valerie this, valerie_response response )
80 valerie_error_code error = valerie_server_unavailable;
81 switch( valerie_response_get_error_code( response ) )
84 error = valerie_server_unavailable;
87 error = valerie_no_response;
95 error = valerie_invalid_command;
98 error = valerie_server_timeout;
101 error = valerie_missing_argument;
104 error = valerie_unit_unavailable;
107 error = valerie_invalid_file;
111 error = valerie_unknown_error;
117 /** Execute a command.
120 valerie_error_code valerie_execute( valerie this, size_t size, char *format, ... )
122 valerie_error_code error = valerie_server_unavailable;
123 char *command = malloc( size );
124 if ( this != NULL && command != NULL )
127 va_start( list, format );
128 if ( vsnprintf( command, size, format, list ) != 0 )
130 valerie_response response = valerie_parser_execute( this->parser, command );
131 valerie_set_last_response( this, response );
132 error = valerie_get_error_code( this, response );
136 error = valerie_invalid_command;
142 error = valerie_malloc_failed;
148 /** Execute a command.
151 valerie_error_code valerie_receive( valerie this, char *doc, size_t size, char *format, ... )
153 valerie_error_code error = valerie_server_unavailable;
154 char *command = malloc( size );
155 if ( this != NULL && command != NULL )
158 va_start( list, format );
159 if ( vsnprintf( command, size, format, list ) != 0 )
161 valerie_response response = valerie_parser_received( this->parser, command, doc );
162 valerie_set_last_response( this, response );
163 error = valerie_get_error_code( this, response );
167 error = valerie_invalid_command;
173 error = valerie_malloc_failed;
179 /** Execute a command.
182 valerie_error_code valerie_push( valerie this, mlt_service service, size_t size, char *format, ... )
184 valerie_error_code error = valerie_server_unavailable;
185 char *command = malloc( size );
186 if ( this != NULL && command != NULL )
189 va_start( list, format );
190 if ( vsnprintf( command, size, format, list ) != 0 )
192 valerie_response response = valerie_parser_push( this->parser, command, service );
193 valerie_set_last_response( this, response );
194 error = valerie_get_error_code( this, response );
198 error = valerie_invalid_command;
204 error = valerie_malloc_failed;
210 /** Set a global property.
213 valerie_error_code valerie_set( valerie this, char *property, char *value )
215 return valerie_execute( this, 1024, "SET %s=%s", property, value );
218 /** Get a global property.
221 valerie_error_code valerie_get( valerie this, char *property, char *value, int length )
223 valerie_error_code error = valerie_execute( this, 1024, "GET %s", property );
224 if ( error == valerie_ok )
226 valerie_response response = valerie_get_last_response( this );
227 strncpy( value, valerie_response_get_line( response, 1 ), length );
235 valerie_error_code valerie_run( valerie this, char *file )
237 return valerie_execute( this, 10240, "RUN \"%s\"", file );
243 valerie_error_code valerie_unit_add( valerie this, char *guid, int *unit )
245 valerie_error_code error = valerie_execute( this, 1024, "UADD %s", guid );
246 if ( error == valerie_ok )
248 int length = valerie_response_count( this->last_response );
249 char *line = valerie_response_get_line( this->last_response, length - 1 );
250 if ( line == NULL || sscanf( line, "U%d", unit ) != 1 )
251 error = valerie_unit_creation_failed;
255 if ( error == valerie_unknown_error )
256 error = valerie_unit_creation_failed;
261 /** Load a file on the specified unit.
264 valerie_error_code valerie_unit_load( valerie this, int unit, char *file )
266 return valerie_execute( this, 10240, "LOAD U%d \"%s\"", unit, file );
269 static void valerie_interpret_clip_offset( char *output, valerie_clip_offset offset, int clip )
273 case valerie_absolute:
274 sprintf( output, "%d", clip );
276 case valerie_relative:
278 sprintf( output, "%d", clip );
280 sprintf( output, "+%d", clip );
285 /** Load a file on the specified unit with the specified in/out points.
288 valerie_error_code valerie_unit_load_clipped( valerie this, int unit, char *file, int32_t in, int32_t out )
290 return valerie_execute( this, 10240, "LOAD U%d \"%s\" %d %d", unit, file, in, out );
293 /** Load a file on the specified unit at the end of the current pump.
296 valerie_error_code valerie_unit_load_back( valerie this, int unit, char *file )
298 return valerie_execute( this, 10240, "LOAD U%d \"!%s\"", unit, file );
301 /** Load a file on the specified unit at the end of the pump with the specified in/out points.
304 valerie_error_code valerie_unit_load_back_clipped( valerie this, int unit, char *file, int32_t in, int32_t out )
306 return valerie_execute( this, 10240, "LOAD U%d \"!%s\" %d %d", unit, file, in, out );
309 /** Append a file on the specified unit.
312 valerie_error_code valerie_unit_append( valerie this, int unit, char *file, int32_t in, int32_t out )
314 return valerie_execute( this, 10240, "APND U%d \"%s\" %d %d", unit, file, in, out );
317 /** Push a service on to a unit.
320 valerie_error_code valerie_unit_receive( valerie this, int unit, char *command, char *doc )
322 return valerie_receive( this, doc, 10240, "PUSH U%d %s", unit, command );
325 /** Push a service on to a unit.
328 valerie_error_code valerie_unit_push( valerie this, int unit, char *command, mlt_service service )
330 return valerie_push( this, service, 10240, "PUSH U%d %s", unit, command );
333 /** Clean the unit - this function removes all but the currently playing clip.
336 valerie_error_code valerie_unit_clean( valerie this, int unit )
338 return valerie_execute( this, 1024, "CLEAN U%d", unit );
341 /** Clear the unit - this function removes all clips.
344 valerie_error_code valerie_unit_clear( valerie this, int unit )
346 return valerie_execute( this, 1024, "CLEAR U%d", unit );
349 /** Move clips on the units playlist.
352 valerie_error_code valerie_unit_clip_move( valerie this, int unit, valerie_clip_offset src_offset, int src, valerie_clip_offset dest_offset, int dest )
356 valerie_interpret_clip_offset( temp1, src_offset, src );
357 valerie_interpret_clip_offset( temp2, dest_offset, dest );
358 return valerie_execute( this, 1024, "MOVE U%d %s %s", unit, temp1, temp2 );
361 /** Remove clip at the specified position.
364 valerie_error_code valerie_unit_clip_remove( valerie this, int unit, valerie_clip_offset offset, int clip )
367 valerie_interpret_clip_offset( temp, offset, clip );
368 return valerie_execute( this, 1024, "REMOVE U%d %s", unit, temp );
371 /** Remove the currently playing clip.
374 valerie_error_code valerie_unit_remove_current_clip( valerie this, int unit )
376 return valerie_execute( this, 1024, "REMOVE U%d", unit );
379 /** Insert clip at the specified position.
382 valerie_error_code valerie_unit_clip_insert( valerie this, int unit, valerie_clip_offset offset, int clip, char *file, int32_t in, int32_t out )
385 valerie_interpret_clip_offset( temp, offset, clip );
386 return valerie_execute( this, 1024, "INSERT U%d \"%s\" %s %d %d", unit, file, temp, in, out );
389 /** Play the unit at normal speed.
392 valerie_error_code valerie_unit_play( valerie this, int unit )
394 return valerie_execute( this, 1024, "PLAY U%d 1000", unit );
397 /** Play the unit at specified speed.
400 valerie_error_code valerie_unit_play_at_speed( valerie this, int unit, int speed )
402 return valerie_execute( this, 10240, "PLAY U%d %d", unit, speed );
405 /** Stop playback on the specified unit.
408 valerie_error_code valerie_unit_stop( valerie this, int unit )
410 return valerie_execute( this, 1024, "STOP U%d", unit );
413 /** Pause playback on the specified unit.
416 valerie_error_code valerie_unit_pause( valerie this, int unit )
418 return valerie_execute( this, 1024, "PAUSE U%d", unit );
421 /** Rewind the specified unit.
424 valerie_error_code valerie_unit_rewind( valerie this, int unit )
426 return valerie_execute( this, 1024, "REW U%d", unit );
429 /** Fast forward the specified unit.
432 valerie_error_code valerie_unit_fast_forward( valerie this, int unit )
434 return valerie_execute( this, 1024, "FF U%d", unit );
437 /** Step by the number of frames on the specified unit.
440 valerie_error_code valerie_unit_step( valerie this, int unit, int32_t step )
442 return valerie_execute( this, 1024, "STEP U%d %d", unit, step );
445 /** Goto the specified frame on the specified unit.
448 valerie_error_code valerie_unit_goto( valerie this, int unit, int32_t position )
450 return valerie_execute( this, 1024, "GOTO U%d %d", unit, position );
453 /** Goto the specified frame in the clip on the specified unit.
456 valerie_error_code valerie_unit_clip_goto( valerie this, int unit, valerie_clip_offset offset, int clip, int32_t position )
459 valerie_interpret_clip_offset( temp, offset, clip );
460 return valerie_execute( this, 1024, "GOTO U%d %d %s", unit, position, temp );
463 /** Set the in point of the loaded file on the specified unit.
466 valerie_error_code valerie_unit_set_in( valerie this, int unit, int32_t in )
468 return valerie_execute( this, 1024, "SIN U%d %d", unit, in );
471 /** Set the in point of the clip on the specified unit.
474 valerie_error_code valerie_unit_clip_set_in( valerie this, int unit, valerie_clip_offset offset, int clip, int32_t in )
477 valerie_interpret_clip_offset( temp, offset, clip );
478 return valerie_execute( this, 1024, "SIN U%d %d %s", unit, in, temp );
481 /** Set the out point of the loaded file on the specified unit.
484 valerie_error_code valerie_unit_set_out( valerie this, int unit, int32_t out )
486 return valerie_execute( this, 1024, "SOUT U%d %d", unit, out );
489 /** Set the out point of the clip on the specified unit.
492 valerie_error_code valerie_unit_clip_set_out( valerie this, int unit, valerie_clip_offset offset, int clip, int32_t in )
495 valerie_interpret_clip_offset( temp, offset, clip );
496 return valerie_execute( this, 1024, "SOUT U%d %d %s", unit, in, temp );
499 /** Clear the in point of the loaded file on the specified unit.
502 valerie_error_code valerie_unit_clear_in( valerie this, int unit )
504 return valerie_execute( this, 1024, "SIN U%d -1", unit );
507 /** Clear the out point of the loaded file on the specified unit.
510 valerie_error_code valerie_unit_clear_out( valerie this, int unit )
512 return valerie_execute( this, 1024, "SOUT U%d -1", unit );
515 /** Clear the in and out points on the loaded file on the specified unit.
518 valerie_error_code valerie_unit_clear_in_out( valerie this, int unit )
520 valerie_error_code error = valerie_unit_clear_out( this, unit );
521 if ( error == valerie_ok )
522 error = valerie_unit_clear_in( this, unit );
526 /** Set a unit configuration property.
529 valerie_error_code valerie_unit_set( valerie this, int unit, char *name, char *value )
531 return valerie_execute( this, 1024, "USET U%d %s=%s", unit, name, value );
534 /** Get a unit configuration property.
537 valerie_error_code valerie_unit_get( valerie this, int unit, char *name )
539 return valerie_execute( this, 1024, "UGET U%d %s", unit, name );
542 /** Get a units status.
545 valerie_error_code valerie_unit_status( valerie this, int unit, valerie_status status )
547 valerie_error_code error = valerie_execute( this, 1024, "USTA U%d", unit );
548 int error_code = valerie_response_get_error_code( this->last_response );
550 memset( status, 0, sizeof( valerie_status_t ) );
552 if ( error_code == 202 && valerie_response_count( this->last_response ) == 2 )
553 valerie_status_parse( status, valerie_response_get_line( this->last_response, 1 ) );
554 else if ( error_code == 403 )
555 status->status = unit_undefined;
560 /** Transfer the current settings of unit src to unit dest.
563 valerie_error_code valerie_unit_transfer( valerie this, int src, int dest )
565 return valerie_execute( this, 1024, "XFER U%d U%d", src, dest );
568 /** Obtain the parsers notifier.
571 valerie_notifier valerie_get_notifier( valerie this )
574 return valerie_parser_get_notifier( this->parser );
579 /** List the contents of the specified directory.
582 valerie_dir valerie_dir_init( valerie this, char *directory )
584 valerie_dir dir = malloc( sizeof( valerie_dir_t ) );
587 memset( dir, 0, sizeof( valerie_dir_t ) );
588 dir->directory = strdup( directory );
589 dir->response = valerie_parser_executef( this->parser, "CLS \"%s\"", directory );
594 /** Return the error code associated to the dir.
597 valerie_error_code valerie_dir_get_error_code( valerie_dir dir )
600 return valerie_get_error_code( NULL, dir->response );
602 return valerie_malloc_failed;
605 /** Get a particular file entry in the directory.
608 valerie_error_code valerie_dir_get( valerie_dir dir, int index, valerie_dir_entry entry )
610 valerie_error_code error = valerie_ok;
611 memset( entry, 0, sizeof( valerie_dir_entry_t ) );
612 if ( index < valerie_dir_count( dir ) )
614 char *line = valerie_response_get_line( dir->response, index + 1 );
615 valerie_tokeniser tokeniser = valerie_tokeniser_init( );
616 valerie_tokeniser_parse_new( tokeniser, line, " " );
618 if ( valerie_tokeniser_count( tokeniser ) > 0 )
620 valerie_util_strip( valerie_tokeniser_get_string( tokeniser, 0 ), '\"' );
621 strcpy( entry->full, dir->directory );
622 if ( entry->full[ strlen( entry->full ) - 1 ] != '/' )
623 strcat( entry->full, "/" );
624 strcpy( entry->name, valerie_tokeniser_get_string( tokeniser, 0 ) );
625 strcat( entry->full, entry->name );
627 switch ( valerie_tokeniser_count( tokeniser ) )
633 entry->size = strtoull( valerie_tokeniser_get_string( tokeniser, 1 ), NULL, 10 );
636 error = valerie_invalid_file;
640 valerie_tokeniser_close( tokeniser );
645 /** Get the number of entries in the directory
648 int valerie_dir_count( valerie_dir dir )
650 if ( dir != NULL && valerie_response_count( dir->response ) >= 2 )
651 return valerie_response_count( dir->response ) - 2;
656 /** Close the directory structure.
659 void valerie_dir_close( valerie_dir dir )
663 free( dir->directory );
664 valerie_response_close( dir->response );
669 /** List the playlist of the specified unit.
672 valerie_list valerie_list_init( valerie this, int unit )
674 valerie_list list = calloc( 1, sizeof( valerie_list_t ) );
677 list->response = valerie_parser_executef( this->parser, "LIST U%d", unit );
678 if ( valerie_response_count( list->response ) >= 2 )
679 list->generation = atoi( valerie_response_get_line( list->response, 1 ) );
684 /** Return the error code associated to the list.
687 valerie_error_code valerie_list_get_error_code( valerie_list list )
690 return valerie_get_error_code( NULL, list->response );
692 return valerie_malloc_failed;
695 /** Get a particular file entry in the list.
698 valerie_error_code valerie_list_get( valerie_list list, int index, valerie_list_entry entry )
700 valerie_error_code error = valerie_ok;
701 memset( entry, 0, sizeof( valerie_list_entry_t ) );
702 if ( index < valerie_list_count( list ) )
704 char *line = valerie_response_get_line( list->response, index + 2 );
705 valerie_tokeniser tokeniser = valerie_tokeniser_init( );
706 valerie_tokeniser_parse_new( tokeniser, line, " " );
708 if ( valerie_tokeniser_count( tokeniser ) > 0 )
710 entry->clip = atoi( valerie_tokeniser_get_string( tokeniser, 0 ) );
711 valerie_util_strip( valerie_tokeniser_get_string( tokeniser, 1 ), '\"' );
712 strcpy( entry->full, valerie_tokeniser_get_string( tokeniser, 1 ) );
713 entry->in = atol( valerie_tokeniser_get_string( tokeniser, 2 ) );
714 entry->out = atol( valerie_tokeniser_get_string( tokeniser, 3 ) );
715 entry->max = atol( valerie_tokeniser_get_string( tokeniser, 4 ) );
716 entry->size = atol( valerie_tokeniser_get_string( tokeniser, 5 ) );
717 entry->fps = atof( valerie_tokeniser_get_string( tokeniser, 6 ) );
719 valerie_tokeniser_close( tokeniser );
724 /** Get the number of entries in the list
727 int valerie_list_count( valerie_list list )
729 if ( list != NULL && valerie_response_count( list->response ) >= 3 )
730 return valerie_response_count( list->response ) - 3;
735 /** Close the list structure.
738 void valerie_list_close( valerie_list list )
742 valerie_response_close( list->response );
747 /** List the currently connected nodes.
750 valerie_nodes valerie_nodes_init( valerie this )
752 valerie_nodes nodes = malloc( sizeof( valerie_nodes_t ) );
755 memset( nodes, 0, sizeof( valerie_nodes_t ) );
756 nodes->response = valerie_parser_executef( this->parser, "NLS" );
761 /** Return the error code associated to the nodes list.
764 valerie_error_code valerie_nodes_get_error_code( valerie_nodes nodes )
767 return valerie_get_error_code( NULL, nodes->response );
769 return valerie_malloc_failed;
772 /** Get a particular node entry.
775 valerie_error_code valerie_nodes_get( valerie_nodes nodes, int index, valerie_node_entry entry )
777 valerie_error_code error = valerie_ok;
778 memset( entry, 0, sizeof( valerie_node_entry_t ) );
779 if ( index < valerie_nodes_count( nodes ) )
781 char *line = valerie_response_get_line( nodes->response, index + 1 );
782 valerie_tokeniser tokeniser = valerie_tokeniser_init( );
783 valerie_tokeniser_parse_new( tokeniser, line, " " );
785 if ( valerie_tokeniser_count( tokeniser ) == 3 )
787 entry->node = atoi( valerie_tokeniser_get_string( tokeniser, 0 ) );
788 strncpy( entry->guid, valerie_tokeniser_get_string( tokeniser, 1 ), sizeof( entry->guid ) );
789 valerie_util_strip( valerie_tokeniser_get_string( tokeniser, 2 ), '\"' );
790 strncpy( entry->name, valerie_tokeniser_get_string( tokeniser, 2 ), sizeof( entry->name ) );
793 valerie_tokeniser_close( tokeniser );
798 /** Get the number of nodes
801 int valerie_nodes_count( valerie_nodes nodes )
803 if ( nodes != NULL && valerie_response_count( nodes->response ) >= 2 )
804 return valerie_response_count( nodes->response ) - 2;
809 /** Close the nodes structure.
812 void valerie_nodes_close( valerie_nodes nodes )
816 valerie_response_close( nodes->response );
821 /** List the currently defined units.
824 valerie_units valerie_units_init( valerie this )
826 valerie_units units = malloc( sizeof( valerie_units_t ) );
829 memset( units, 0, sizeof( valerie_units_t ) );
830 units->response = valerie_parser_executef( this->parser, "ULS" );
835 /** Return the error code associated to the nodes list.
838 valerie_error_code valerie_units_get_error_code( valerie_units units )
841 return valerie_get_error_code( NULL, units->response );
843 return valerie_malloc_failed;
846 /** Get a particular unit entry.
849 valerie_error_code valerie_units_get( valerie_units units, int index, valerie_unit_entry entry )
851 valerie_error_code error = valerie_ok;
852 memset( entry, 0, sizeof( valerie_unit_entry_t ) );
853 if ( index < valerie_units_count( units ) )
855 char *line = valerie_response_get_line( units->response, index + 1 );
856 valerie_tokeniser tokeniser = valerie_tokeniser_init( );
857 valerie_tokeniser_parse_new( tokeniser, line, " " );
859 if ( valerie_tokeniser_count( tokeniser ) == 4 )
861 entry->unit = atoi( valerie_tokeniser_get_string( tokeniser, 0 ) + 1 );
862 entry->node = atoi( valerie_tokeniser_get_string( tokeniser, 1 ) );
863 strncpy( entry->guid, valerie_tokeniser_get_string( tokeniser, 2 ), sizeof( entry->guid ) );
864 entry->online = atoi( valerie_tokeniser_get_string( tokeniser, 3 ) );
867 valerie_tokeniser_close( tokeniser );
872 /** Get the number of units
875 int valerie_units_count( valerie_units units )
877 if ( units != NULL && valerie_response_count( units->response ) >= 2 )
878 return valerie_response_count( units->response ) - 2;
883 /** Close the units structure.
886 void valerie_units_close( valerie_units units )
890 valerie_response_close( units->response );
895 /** Get the response of the last command executed.
898 valerie_response valerie_get_last_response( valerie this )
900 return this->last_response;
903 /** Obtain a printable message associated to the error code provided.
906 char *valerie_error_description( valerie_error_code error )
908 char *msg = "Unrecognised error";
914 case valerie_malloc_failed:
915 msg = "Memory allocation error";
917 case valerie_unknown_error:
918 msg = "Unknown error";
920 case valerie_no_response:
921 msg = "No response obtained";
923 case valerie_invalid_command:
924 msg = "Invalid command";
926 case valerie_server_timeout:
927 msg = "Communications with server timed out";
929 case valerie_missing_argument:
930 msg = "Missing argument";
932 case valerie_server_unavailable:
933 msg = "Unable to communicate with server";
935 case valerie_unit_creation_failed:
936 msg = "Unit creation failed";
938 case valerie_unit_unavailable:
939 msg = "Unit unavailable";
941 case valerie_invalid_file:
942 msg = "Invalid file";
944 case valerie_invalid_position:
945 msg = "Invalid position";
951 /** Close the valerie structure.
954 void valerie_close( valerie this )
958 valerie_set_last_response( this, NULL );