mirror of https://github.com/FFmpeg/FFmpeg.git
Based on patch by Matti Hamalainen (mhamalai<mot>students<punkt>oamk<punkt>) Originally committed as revision 19629 to svn://svn.ffmpeg.org/ffmpeg/trunkrelease/0.6
Kostya Shishkov
16 years ago
parent
6984380c61
commit
191e34cd67
4 changed files with 158 additions and 99 deletions
@ -0,0 +1,122 @@ |
||||
/*
|
||||
* APE tag handling |
||||
* Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> |
||||
* based upon libdemac from Dave Chapman. |
||||
* |
||||
* This file is part of FFmpeg. |
||||
* |
||||
* FFmpeg is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU Lesser General Public |
||||
* License as published by the Free Software Foundation; either |
||||
* version 2.1 of the License, or (at your option) any later version. |
||||
* |
||||
* FFmpeg 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 |
||||
* Lesser General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU Lesser General Public |
||||
* License along with FFmpeg; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
#include "libavutil/intreadwrite.h" |
||||
#include "avformat.h" |
||||
|
||||
#define ENABLE_DEBUG 0 |
||||
|
||||
#define APE_TAG_VERSION 2000 |
||||
#define APE_TAG_FOOTER_BYTES 32 |
||||
#define APE_TAG_FLAG_CONTAINS_HEADER (1 << 31) |
||||
#define APE_TAG_FLAG_IS_HEADER (1 << 29) |
||||
|
||||
static int ape_tag_read_field(AVFormatContext *s) |
||||
{ |
||||
ByteIOContext *pb = s->pb; |
||||
uint8_t key[1024], value[1024]; |
||||
uint32_t size, flags; |
||||
int i, l, c; |
||||
|
||||
size = get_le32(pb); /* field size */ |
||||
flags = get_le32(pb); /* field flags */ |
||||
for (i = 0; i < sizeof(key) - 1; i++) { |
||||
c = get_byte(pb); |
||||
if (c < 0x20 || c > 0x7E) |
||||
break; |
||||
else |
||||
key[i] = c; |
||||
} |
||||
key[i] = 0; |
||||
if (c != 0) { |
||||
av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key); |
||||
return -1; |
||||
} |
||||
l = FFMIN(size, sizeof(value)-1); |
||||
get_buffer(pb, value, l); |
||||
value[l] = 0; |
||||
url_fskip(pb, size-l); |
||||
if (l < size) |
||||
av_log(s, AV_LOG_WARNING, "Too long '%s' tag was truncated.\n", key); |
||||
av_metadata_set(&s->metadata, key, value); |
||||
return 0; |
||||
} |
||||
|
||||
void ff_ape_parse_tag(AVFormatContext *s) |
||||
{ |
||||
ByteIOContext *pb = s->pb; |
||||
int file_size = url_fsize(pb); |
||||
uint32_t val, fields, tag_bytes; |
||||
uint8_t buf[8]; |
||||
int i; |
||||
|
||||
if (file_size < APE_TAG_FOOTER_BYTES) |
||||
return; |
||||
|
||||
url_fseek(pb, file_size - APE_TAG_FOOTER_BYTES, SEEK_SET); |
||||
|
||||
get_buffer(pb, buf, 8); /* APETAGEX */ |
||||
if (strncmp(buf, "APETAGEX", 8)) { |
||||
return; |
||||
} |
||||
|
||||
val = get_le32(pb); /* APE tag version */ |
||||
if (val > APE_TAG_VERSION) { |
||||
av_log(s, AV_LOG_ERROR, "Unsupported tag version. (>=%d)\n", APE_TAG_VERSION); |
||||
return; |
||||
} |
||||
|
||||
tag_bytes = get_le32(pb); /* tag size */ |
||||
if (tag_bytes - APE_TAG_FOOTER_BYTES > (1024 * 1024 * 16)) { |
||||
av_log(s, AV_LOG_ERROR, "Tag size is way too big\n"); |
||||
return; |
||||
} |
||||
|
||||
fields = get_le32(pb); /* number of fields */ |
||||
if (fields > 65536) { |
||||
av_log(s, AV_LOG_ERROR, "Too many tag fields (%d)\n", fields); |
||||
return; |
||||
} |
||||
|
||||
val = get_le32(pb); /* flags */ |
||||
if (val & APE_TAG_FLAG_IS_HEADER) { |
||||
av_log(s, AV_LOG_ERROR, "APE Tag is a header\n"); |
||||
return; |
||||
} |
||||
|
||||
url_fseek(pb, file_size - tag_bytes, SEEK_SET); |
||||
|
||||
for (i=0; i<fields; i++) |
||||
if (ape_tag_read_field(s) < 0) break; |
||||
|
||||
#if ENABLE_DEBUG |
||||
av_log(s, AV_LOG_DEBUG, "\nAPE Tags:\n\n"); |
||||
av_log(s, AV_LOG_DEBUG, "title = %s\n", s->title); |
||||
av_log(s, AV_LOG_DEBUG, "author = %s\n", s->author); |
||||
av_log(s, AV_LOG_DEBUG, "copyright = %s\n", s->copyright); |
||||
av_log(s, AV_LOG_DEBUG, "comment = %s\n", s->comment); |
||||
av_log(s, AV_LOG_DEBUG, "album = %s\n", s->album); |
||||
av_log(s, AV_LOG_DEBUG, "year = %d\n", s->year); |
||||
av_log(s, AV_LOG_DEBUG, "track = %d\n", s->track); |
||||
av_log(s, AV_LOG_DEBUG, "genre = %s\n", s->genre); |
||||
#endif |
||||
} |
||||
@ -0,0 +1,33 @@ |
||||
/*
|
||||
* APE tag handling |
||||
* Copyright (c) 2007 Benjamin Zores <ben@geexbox.org> |
||||
* based upon libdemac from Dave Chapman. |
||||
* |
||||
* This file is part of FFmpeg. |
||||
* |
||||
* FFmpeg is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU Lesser General Public |
||||
* License as published by the Free Software Foundation; either |
||||
* version 2.1 of the License, or (at your option) any later version. |
||||
* |
||||
* FFmpeg 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 |
||||
* Lesser General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU Lesser General Public |
||||
* License along with FFmpeg; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
#ifndef AVFORMAT_APETAG_H |
||||
#define AVFORMAT_APETAG_H |
||||
|
||||
#include "avformat.h" |
||||
|
||||
/**
|
||||
* Read and parse an APE tag |
||||
*/ |
||||
void ff_ape_parse_tag(AVFormatContext *s); |
||||
|
||||
#endif /* AVFORMAT_ID3V2_H */ |
||||
Loading…
Reference in new issue