+++ /dev/null
-/* metaflac - Command-line FLAC metadata editor
- * Copyright (C) 2001,2002,2003,2004,2005,2006,2007 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.
- */
-
-#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" /* for grabbag__picture_parse_specification() etc */
-
-#include "operations_shorthand.h"
-
-static FLAC__bool import_pic_from(const char *filename, FLAC__StreamMetadata **picture, const char *specification, FLAC__bool *needs_write);
-static FLAC__bool export_pic_to(const char *filename, const FLAC__StreamMetadata *picture, const char *pic_filename);
-
-FLAC__bool do_shorthand_operation__picture(const char *filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write)
-{
- FLAC__bool ok = true, has_type1 = false, has_type2 = false;
- FLAC__StreamMetadata *picture = 0;
- FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
-
- if(0 == iterator)
- die("out of memory allocating iterator");
-
- FLAC__metadata_iterator_init(iterator, chain);
-
- switch(operation->type) {
- case OP__IMPORT_PICTURE_FROM:
- ok = import_pic_from(filename, &picture, operation->argument.specification.value, needs_write);
- if(ok) {
- /* append PICTURE block */
- while(FLAC__metadata_iterator_next(iterator))
- ;
- if(!FLAC__metadata_iterator_insert_block_after(iterator, picture)) {
- print_error_with_chain_status(chain, "%s: ERROR: adding new PICTURE block to metadata", filename);
- FLAC__metadata_object_delete(picture);
- ok = false;
- }
- }
- if(ok) {
- /* check global PICTURE constraints (max 1 block each of type=1 and type=2) */
- while(FLAC__metadata_iterator_prev(iterator))
- ;
- do {
- FLAC__StreamMetadata *block = FLAC__metadata_iterator_get_block(iterator);
- if(block->type == FLAC__METADATA_TYPE_PICTURE) {
- if(block->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) {
- if(has_type1) {
- print_error_with_chain_status(chain, "%s: ERROR: FLAC stream can only have one 32x32 standard icon (type=1) PICTURE block", filename);
- ok = false;
- }
- has_type1 = true;
- }
- else if(block->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) {
- if(has_type2) {
- print_error_with_chain_status(chain, "%s: ERROR: FLAC stream can only have one icon (type=2) PICTURE block", filename);
- ok = false;
- }
- has_type2 = true;
- }
- }
- } while(FLAC__metadata_iterator_next(iterator));
- }
- break;
- case OP__EXPORT_PICTURE_TO:
- {
- const Argument_BlockNumber *a = operation->argument.export_picture_to.block_number_link;
- int block_number = (a && a->num_entries > 0)? (int)a->entries[0] : -1;
- unsigned i = 0;
- do {
- FLAC__StreamMetadata *block = FLAC__metadata_iterator_get_block(iterator);
- if(block->type == FLAC__METADATA_TYPE_PICTURE && (block_number < 0 || i == (unsigned)block_number))
- picture = block;
- i++;
- } while(FLAC__metadata_iterator_next(iterator) && 0 == picture);
- if(0 == picture) {
- if(block_number < 0)
- fprintf(stderr, "%s: ERROR: FLAC file has no PICTURE block\n", filename);
- else
- fprintf(stderr, "%s: ERROR: FLAC file has no PICTURE block at block #%d\n", filename, block_number);
- ok = false;
- }
- else
- ok = export_pic_to(filename, picture, operation->argument.filename.value);
- }
- break;
- default:
- ok = false;
- FLAC__ASSERT(0);
- break;
- };
-
- FLAC__metadata_iterator_delete(iterator);
- return ok;
-}
-
-/*
- * local routines
- */
-
-FLAC__bool import_pic_from(const char *filename, FLAC__StreamMetadata **picture, const char *specification, FLAC__bool *needs_write)
-{
- const char *error_message;
-
- if(0 == specification || strlen(specification) == 0) {
- fprintf(stderr, "%s: ERROR: empty picture specification\n", filename);
- return false;
- }
-
- *picture = grabbag__picture_parse_specification(specification, &error_message);
-
- if(0 == *picture) {
- fprintf(stderr, "%s: ERROR: while parsing picture specification \"%s\": %s\n", filename, specification, error_message);
- return false;
- }
-
- if(!FLAC__format_picture_is_legal(&(*picture)->data.picture, &error_message)) {
- fprintf(stderr, "%s: ERROR: new PICTURE block for \"%s\" is illegal: %s\n", filename, specification, error_message);
- return false;
- }
-
- *needs_write = true;
- return true;
-}
-
-FLAC__bool export_pic_to(const char *filename, const FLAC__StreamMetadata *picture, const char *pic_filename)
-{
- FILE *f;
- const FLAC__uint32 len = picture->data.picture.data_length;
-
- if(0 == pic_filename || strlen(pic_filename) == 0) {
- fprintf(stderr, "%s: ERROR: empty export file name\n", filename);
- return false;
- }
- if(0 == strcmp(pic_filename, "-"))
- f = grabbag__file_get_binary_stdout();
- else
- f = fopen(pic_filename, "wb");
-
- if(0 == f) {
- fprintf(stderr, "%s: ERROR: can't open export file %s: %s\n", filename, pic_filename, strerror(errno));
- return false;
- }
-
- if(fwrite(picture->data.picture.data, 1, len, f) != len) {
- fprintf(stderr, "%s: ERROR: writing PICTURE data to file\n", filename);
- return false;
- }
-
- if(f != stdout)
- fclose(f);
-
- return true;
-}
projects / 16.git / blobdiff