Add 2003 to copyright notice
[flac.git] / src / metaflac / operations_shorthand_cuesheet.c
1 /* metaflac - Command-line FLAC metadata editor
2  * Copyright (C) 2001,2002,2003  Josh Coalson
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
17  */
18
19 #include "options.h"
20 #include "utils.h"
21 #include "FLAC/assert.h"
22 #include "share/grabbag.h"
23 #include <string.h>
24
25 static FLAC__bool import_cs_from(const char *filename, FLAC__StreamMetadata **cuesheet, const char *cs_filename, FLAC__bool *needs_write, FLAC__uint64 lead_out_offset, Argument_AddSeekpoint *add_seekpoint_link);
26 static FLAC__bool export_cs_to(const char *filename, const FLAC__StreamMetadata *cuesheet, const char *cs_filename);
27
28 FLAC__bool do_shorthand_operation__cuesheet(const char *filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write)
29 {
30         FLAC__bool ok = true;
31         FLAC__StreamMetadata *cuesheet = 0;
32         FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
33         FLAC__uint64 lead_out_offset;
34
35         if(0 == iterator)
36                 die("out of memory allocating iterator");
37
38         FLAC__metadata_iterator_init(iterator, chain);
39
40         do {
41                 FLAC__StreamMetadata *block = FLAC__metadata_iterator_get_block(iterator);
42                 if(block->type == FLAC__METADATA_TYPE_STREAMINFO) {
43                         lead_out_offset = block->data.stream_info.total_samples;
44                         if(lead_out_offset == 0) {
45                                 fprintf(stderr, "%s: ERROR: FLAC file must have total_samples set in STREAMINFO in order to import/export cuesheet\n", filename);
46                                 FLAC__metadata_iterator_delete(iterator);
47                                 return false;
48                         }
49                         if(block->data.stream_info.sample_rate != 44100) {
50                                 fprintf(stderr, "%s: ERROR: FLAC stream must currently be 44.1kHz in order to import/export cuesheet\n", filename);
51                                 FLAC__metadata_iterator_delete(iterator);
52                                 return false;
53                         }
54                 }
55                 else if(block->type == FLAC__METADATA_TYPE_CUESHEET)
56                         cuesheet = block;
57         } while(FLAC__metadata_iterator_next(iterator));
58
59         switch(operation->type) {
60                 case OP__IMPORT_CUESHEET_FROM:
61                         if(0 != cuesheet) {
62                                 fprintf(stderr, "%s: ERROR: FLAC file already has CUESHEET block\n", filename);
63                                 ok = false;
64                         }
65                         else {
66                                 ok = import_cs_from(filename, &cuesheet, operation->argument.import_cuesheet_from.filename, needs_write, lead_out_offset, operation->argument.import_cuesheet_from.add_seekpoint_link);
67                                 if(ok) {
68                                         /* append CUESHEET block */
69                                         while(FLAC__metadata_iterator_next(iterator))
70                                                 ;
71                                         if(!FLAC__metadata_iterator_insert_block_after(iterator, cuesheet)) {
72                                                 fprintf(stderr, "%s: ERROR: adding new CUESHEET block to metadata, status =\"%s\"\n", filename, FLAC__Metadata_ChainStatusString[FLAC__metadata_chain_status(chain)]);
73                                                 FLAC__metadata_object_delete(cuesheet);
74                                                 ok = false;
75                                         }
76                                 }
77                         }
78                         break;
79                 case OP__EXPORT_CUESHEET_TO:
80                         if(0 == cuesheet) {
81                                 fprintf(stderr, "%s: ERROR: FLAC file has no CUESHEET block\n", filename);
82                                 ok = false;
83                         }
84                         else
85                                 ok = export_cs_to(filename, cuesheet, operation->argument.filename.value);
86                         break;
87                 default:
88                         ok = false;
89                         FLAC__ASSERT(0);
90                         break;
91         };
92
93         FLAC__metadata_iterator_delete(iterator);
94         return ok;
95 }
96
97 /*
98  * local routines
99  */
100
101 FLAC__bool import_cs_from(const char *filename, FLAC__StreamMetadata **cuesheet, const char *cs_filename, FLAC__bool *needs_write, FLAC__uint64 lead_out_offset, Argument_AddSeekpoint *add_seekpoint_link)
102 {
103         FILE *f;
104         const char *error_message;
105         char **seekpoint_specification = add_seekpoint_link? &(add_seekpoint_link->specification) : 0;
106         unsigned last_line_read;
107
108         if(0 == cs_filename || strlen(cs_filename) == 0) {
109                 fprintf(stderr, "%s: ERROR: empty import file name\n", filename);
110                 return false;
111         }
112         if(0 == strcmp(cs_filename, "-"))
113                 f = stdin;
114         else
115                 f = fopen(cs_filename, "r");
116
117         if(0 == f) {
118                 fprintf(stderr, "%s: ERROR: can't open import file %s\n", filename, cs_filename);
119                 return false;
120         }
121
122         *cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, /*@@@@is_cdda=*/true, lead_out_offset);
123
124         if(f != stdin)
125                 fclose(f);
126
127         if(0 == *cuesheet) {
128                 fprintf(stderr, "%s: ERROR: while parsing cuesheet \"%s\" on line %u: %s\n", filename, cs_filename, last_line_read, error_message);
129                 return false;
130         }
131
132         /* add seekpoints for each index point if required */
133         if(0 != seekpoint_specification) {
134                 char spec[128];
135                 unsigned track, index;
136                 const FLAC__StreamMetadata_CueSheet *cs = &(*cuesheet)->data.cue_sheet;
137                 if(0 == *seekpoint_specification)
138                         *seekpoint_specification = local_strdup("");
139                 for(track = 0; track < cs->num_tracks; track++) {
140                         const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+track;
141                         for(index = 0; index < tr->num_indices; index++) {
142                                 sprintf(spec, "%llu;", tr->offset + tr->indices[index].offset);
143                                 local_strcat(seekpoint_specification, spec);
144                         }
145                 }
146         }
147
148         *needs_write = true;
149         return true;
150 }
151
152 FLAC__bool export_cs_to(const char *filename, const FLAC__StreamMetadata *cuesheet, const char *cs_filename)
153 {
154         FILE *f;
155
156         if(0 == cs_filename || strlen(cs_filename) == 0) {
157                 fprintf(stderr, "%s: ERROR: empty export file name\n", filename);
158                 return false;
159         }
160         if(0 == strcmp(cs_filename, "-"))
161                 f = stdout;
162         else
163                 f = fopen(cs_filename, "w");
164
165         if(0 == f) {
166                 fprintf(stderr, "%s: ERROR: can't open export file %s\n", filename, cs_filename);
167                 return false;
168         }
169
170         grabbag__cuesheet_emit(f, cuesheet, "\"dummy.wav\" WAVE");
171
172         if(f != stdout)
173                 fclose(f);
174
175         return true;
176 }