0aee49bdf8
This updates the copyright header to all be the same, which is pretty much an update of where to mail request for a copy of the GPL and the years of the MPD project. This also puts all committers under 'The Music Player Project' umbrella. These entries should go individually in the AUTHORS file, for consistancy.
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "aiff.h"
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#include <glib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "aiff"
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struct aiff_header {
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char id[4];
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uint32_t size;
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char format[4];
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};
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struct aiff_chunk_header {
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char id[4];
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uint32_t size;
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};
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size_t
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aiff_seek_id3(FILE *file)
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{
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int ret;
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struct stat st;
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struct aiff_header header;
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struct aiff_chunk_header chunk;
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size_t size;
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/* determine the file size */
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ret = fstat(fileno(file), &st);
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if (ret < 0) {
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g_warning("Failed to stat file descriptor: %s",
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strerror(errno));
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return 0;
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}
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/* seek to the beginning and read the AIFF header */
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ret = fseek(file, 0, SEEK_SET);
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if (ret != 0) {
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g_warning("Failed to seek: %s", g_strerror(errno));
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return 0;
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}
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size = fread(&header, sizeof(header), 1, file);
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if (size != 1 ||
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memcmp(header.id, "FORM", 4) != 0 ||
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GUINT32_FROM_BE(header.size) > (uint32_t)st.st_size ||
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memcmp(header.format, "AIFF", 4) != 0)
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/* not a AIFF file */
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return 0;
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while (true) {
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/* read the chunk header */
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size = fread(&chunk, sizeof(chunk), 1, file);
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if (size != 1)
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return 0;
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size = GUINT32_FROM_BE(chunk.size);
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if (size % 2 != 0)
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/* pad byte */
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++size;
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if (memcmp(chunk.id, "ID3 ", 4) == 0)
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/* found it! */
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return size;
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if ((off_t)size < 0)
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/* integer underflow after cast to signed
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type */
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return 0;
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ret = fseek(file, size, SEEK_CUR);
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if (ret != 0)
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return 0;
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}
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}
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