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/* metaflac - Command-line FLAC metadata editor
* Copyright (C) 2001-2009 Josh Coalson
* Copyright (C) 2011-2013 Xiph.Org Foundation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <string.h>
#include "options.h"
#include "utils.h"
#include "FLAC/assert.h"
#include "share/grabbag.h"
#include "share/compat.h"
#include "operations_shorthand.h"
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, unsigned sample_rate, FLAC__bool is_cdda, Argument_AddSeekpoint *add_seekpoint_link);
static FLAC__bool export_cs_to(const char *filename, const FLAC__StreamMetadata *cuesheet, const char *cs_filename);
FLAC__bool do_shorthand_operation__cuesheet(const char *filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write)
{
FLAC__bool ok = true;
FLAC__StreamMetadata *cuesheet = 0;
FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
FLAC__uint64 lead_out_offset = 0;
FLAC__bool is_cdda = false;
unsigned sample_rate = 0;
if(0 == iterator)
die("out of memory allocating iterator");
FLAC__metadata_iterator_init(iterator, chain);
do {
FLAC__StreamMetadata *block = FLAC__metadata_iterator_get_block(iterator);
if(block->type == FLAC__METADATA_TYPE_STREAMINFO) {
lead_out_offset = block->data.stream_info.total_samples;
if(lead_out_offset == 0) {
flac_fprintf(stderr, "%s: ERROR: FLAC file must have total_samples set in STREAMINFO in order to import/export cuesheet\n", filename);
FLAC__metadata_iterator_delete(iterator);
return false;
}
sample_rate = block->data.stream_info.sample_rate;
is_cdda = (block->data.stream_info.channels == 1 || block->data.stream_info.channels == 2) && (block->data.stream_info.bits_per_sample == 16) && (sample_rate == 44100);
}
else if(block->type == FLAC__METADATA_TYPE_CUESHEET)
cuesheet = block;
} while(FLAC__metadata_iterator_next(iterator));
if(lead_out_offset == 0) {
flac_fprintf(stderr, "%s: ERROR: FLAC stream has no STREAMINFO block\n", filename);
FLAC__metadata_iterator_delete(iterator);
return false;
}
switch(operation->type) {
case OP__IMPORT_CUESHEET_FROM:
if(0 != cuesheet) {
flac_fprintf(stderr, "%s: ERROR: FLAC file already has CUESHEET block\n", filename);
ok = false;
}
else {
ok = import_cs_from(filename, &cuesheet, operation->argument.import_cuesheet_from.filename, needs_write, lead_out_offset, sample_rate, is_cdda, operation->argument.import_cuesheet_from.add_seekpoint_link);
if(ok) {
/* append CUESHEET block */
while(FLAC__metadata_iterator_next(iterator))
;
if(!FLAC__metadata_iterator_insert_block_after(iterator, cuesheet)) {
print_error_with_chain_status(chain, "%s: ERROR: adding new CUESHEET block to metadata", filename);
FLAC__metadata_object_delete(cuesheet);
ok = false;
}
}
}
break;
case OP__EXPORT_CUESHEET_TO:
if(0 == cuesheet) {
flac_fprintf(stderr, "%s: ERROR: FLAC file has no CUESHEET block\n", filename);
ok = false;
}
else
ok = export_cs_to(filename, cuesheet, operation->argument.filename.value);
break;
default:
ok = false;
FLAC__ASSERT(0);
break;
};
FLAC__metadata_iterator_delete(iterator);
return ok;
}
/*
* local routines
*/
FLAC__bool import_cs_from(const char *filename, FLAC__StreamMetadata **cuesheet, const char *cs_filename, FLAC__bool *needs_write, FLAC__uint64 lead_out_offset, unsigned sample_rate, FLAC__bool is_cdda, Argument_AddSeekpoint *add_seekpoint_link)
{
FILE *f;
const char *error_message;
char **seekpoint_specification = add_seekpoint_link? &(add_seekpoint_link->specification) : 0;
unsigned last_line_read;
if(0 == cs_filename || strlen(cs_filename) == 0) {
flac_fprintf(stderr, "%s: ERROR: empty import file name\n", filename);
return false;
}
if(0 == strcmp(cs_filename, "-"))
f = stdin;
else
f = flac_fopen(cs_filename, "r");
if(0 == f) {
flac_fprintf(stderr, "%s: ERROR: can't open import file %s: %s\n", filename, cs_filename, strerror(errno));
return false;
}
*cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, sample_rate, is_cdda, lead_out_offset);
if(f != stdin)
fclose(f);
if(0 == *cuesheet) {
flac_fprintf(stderr, "%s: ERROR: while parsing cuesheet \"%s\" on line %u: %s\n", filename, cs_filename, last_line_read, error_message);
return false;
}
if(!FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/false, &error_message)) {
flac_fprintf(stderr, "%s: ERROR parsing cuesheet \"%s\": %s\n", filename, cs_filename, error_message);
return false;
}
/* if we're expecting CDDA, warn about non-compliance */
if(is_cdda && !FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/true, &error_message)) {
flac_fprintf(stderr, "%s: WARNING cuesheet \"%s\" is not audio CD compliant: %s\n", filename, cs_filename, error_message);
(*cuesheet)->data.cue_sheet.is_cd = false;
}
/* add seekpoints for each index point if required */
if(0 != seekpoint_specification) {
char spec[128];
unsigned track, indx;
const FLAC__StreamMetadata_CueSheet *cs = &(*cuesheet)->data.cue_sheet;
if(0 == *seekpoint_specification)
*seekpoint_specification = local_strdup("");
for(track = 0; track < cs->num_tracks; track++) {
const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+track;
for(indx = 0; indx < tr->num_indices; indx++) {
flac_snprintf(spec, sizeof (spec), "%" PRIu64 ";", (tr->offset + tr->indices[indx].offset));
local_strcat(seekpoint_specification, spec);
}
}
}
*needs_write = true;
return true;
}
FLAC__bool export_cs_to(const char *filename, const FLAC__StreamMetadata *cuesheet, const char *cs_filename)
{
FILE *f;
char *ref = 0;
size_t reflen;
if(0 == cs_filename || strlen(cs_filename) == 0) {
flac_fprintf(stderr, "%s: ERROR: empty export file name\n", filename);
return false;
}
if(0 == strcmp(cs_filename, "-"))
f = stdout;
else
f = flac_fopen(cs_filename, "w");
if(0 == f) {
flac_fprintf(stderr, "%s: ERROR: can't open export file %s: %s\n", filename, cs_filename, strerror(errno));
return false;
}
reflen = strlen(filename) + 7 + 1;
if(0 == (ref = malloc(reflen))) {
flac_fprintf(stderr, "%s: ERROR: allocating memory\n", filename);
if(f != stdout)
fclose(f);
return false;
}
flac_snprintf(ref, reflen, "\"%s\" FLAC", filename);
grabbag__cuesheet_emit(f, cuesheet, ref);
free(ref);
if(f != stdout)
fclose(f);
return true;
}
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