operations_shorthand_cuesheet.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:6k
源码类别:
Windows CE
开发平台:
C/C++
- /* metaflac - Command-line FLAC metadata editor
- * Copyright (C) 2001,2002,2003,2004,2005 Josh Coalson
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #include "options.h"
- #include "utils.h"
- #include "FLAC/assert.h"
- #include "share/grabbag.h"
- #include <string.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, 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;
- 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) {
- fprintf(stderr, "%s: ERROR: FLAC file must have total_samples set in STREAMINFO in order to import/export cuesheetn", filename);
- FLAC__metadata_iterator_delete(iterator);
- return false;
- }
- is_cdda = (block->data.stream_info.channels == 1 || block->data.stream_info.channels == 2) && (block->data.stream_info.bits_per_sample == 16) && (block->data.stream_info.sample_rate == 44100);
- }
- else if(block->type == FLAC__METADATA_TYPE_CUESHEET)
- cuesheet = block;
- } while(FLAC__metadata_iterator_next(iterator));
- if(lead_out_offset == 0) {
- fprintf(stderr, "%s: ERROR: FLAC stream has no STREAMINFO blockn", filename);
- FLAC__metadata_iterator_delete(iterator);
- return false;
- }
- switch(operation->type) {
- case OP__IMPORT_CUESHEET_FROM:
- if(0 != cuesheet) {
- fprintf(stderr, "%s: ERROR: FLAC file already has CUESHEET blockn", filename);
- ok = false;
- }
- else {
- ok = import_cs_from(filename, &cuesheet, operation->argument.import_cuesheet_from.filename, needs_write, lead_out_offset, 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) {
- fprintf(stderr, "%s: ERROR: FLAC file has no CUESHEET blockn", 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, 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) {
- fprintf(stderr, "%s: ERROR: empty import file namen", filename);
- return false;
- }
- if(0 == strcmp(cs_filename, "-"))
- f = stdin;
- else
- f = fopen(cs_filename, "r");
- if(0 == f) {
- fprintf(stderr, "%s: ERROR: can't open import file %sn", filename, cs_filename);
- return false;
- }
- *cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, is_cdda, lead_out_offset);
- if(f != stdin)
- fclose(f);
- if(0 == *cuesheet) {
- fprintf(stderr, "%s: ERROR: while parsing cuesheet "%s" on line %u: %sn", filename, cs_filename, last_line_read, error_message);
- return false;
- }
- /* add seekpoints for each index point if required */
- if(0 != seekpoint_specification) {
- char spec[128];
- unsigned track, index;
- 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(index = 0; index < tr->num_indices; index++) {
- #ifdef _MSC_VER
- sprintf(spec, "%I64u;", tr->offset + tr->indices[index].offset);
- #else
- sprintf(spec, "%llu;", tr->offset + tr->indices[index].offset);
- #endif
- 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;
- if(0 == cs_filename || strlen(cs_filename) == 0) {
- fprintf(stderr, "%s: ERROR: empty export file namen", filename);
- return false;
- }
- if(0 == strcmp(cs_filename, "-"))
- f = stdout;
- else
- f = fopen(cs_filename, "w");
- if(0 == f) {
- fprintf(stderr, "%s: ERROR: can't open export file %sn", filename, cs_filename);
- return false;
- }
- grabbag__cuesheet_emit(f, cuesheet, ""dummy.wav" WAVE");
- if(f != stdout)
- fclose(f);
- return true;
- }