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/*
* Copyright (c) 2000, 2001 Fabrice Bellard
*
* 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/mem.h"
#include "asf.h"
#include "demux.h"
#include "id3v2.h"
#include "internal.h"
/* List of official tags at http://msdn.microsoft.com/en-us/library/dd743066(VS.85).aspx */
const AVMetadataConv ff_asf_metadata_conv[] = {
{ "WM/AlbumArtist", "album_artist" },
{ "WM/AlbumTitle", "album" },
{ "Author", "artist" },
{ "Description", "comment" },
{ "WM/Composer", "composer" },
{ "WM/EncodedBy", "encoded_by" },
{ "WM/EncodingSettings", "encoder" },
{ "WM/Genre", "genre" },
{ "WM/Language", "language" },
{ "WM/OriginalFilename", "filename" },
{ "WM/PartOfSet", "disc" },
{ "WM/Publisher", "publisher" },
{ "WM/Tool", "encoder" },
{ "WM/TrackNumber", "track" },
{ "WM/MediaStationCallSign", "service_provider" },
{ "WM/MediaStationName", "service_name" },
// { "Year" , "date" }, TODO: conversion year<->date
{ 0 }
};
/* MSDN claims that this should be "compatible with the ID3 frame, APIC",
* but in reality this is only loosely similar */
static int asf_read_picture(AVFormatContext *s, int len)
{
const CodecMime *mime = ff_id3v2_mime_tags;
enum AVCodecID id = AV_CODEC_ID_NONE;
char mimetype[64];
uint8_t *desc = NULL;
AVStream *st = NULL;
int ret, type, picsize, desc_len;
/* type + picsize + mime + desc */
if (len < 1 + 4 + 2 + 2) {
av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
return AVERROR_INVALIDDATA;
}
/* picture type */
type = avio_r8(s->pb);
len--;
if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
av_log(s, AV_LOG_WARNING, "Unknown attached picture type: %d.\n", type);
type = 0;
}
/* picture data size */
picsize = avio_rl32(s->pb);
len -= 4;
/* picture MIME type */
len -= avio_get_str16le(s->pb, len, mimetype, sizeof(mimetype));
while (mime->id != AV_CODEC_ID_NONE) {
if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
id = mime->id;
break;
}
mime++;
}
if (id == AV_CODEC_ID_NONE) {
av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
mimetype);
return 0;
}
if (picsize >= len) {
av_log(s, AV_LOG_ERROR, "Invalid attached picture data size: %d >= %d.\n",
picsize, len);
return AVERROR_INVALIDDATA;
}
/* picture description */
desc_len = (len - picsize) * 2 + 1;
desc = av_malloc(desc_len);
if (!desc)
return AVERROR(ENOMEM);
len -= avio_get_str16le(s->pb, len - picsize, desc, desc_len);
ret = ff_add_attached_pic(s, NULL, s->pb, NULL, picsize);
if (ret < 0)
goto fail;
st = s->streams[s->nb_streams - 1];
st->codecpar->codec_id = id;
if (*desc) {
if (av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
} else
av_freep(&desc);
if (av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0) < 0)
av_log(s, AV_LOG_WARNING, "av_dict_set failed.\n");
return 0;
fail:
av_freep(&desc);
return ret;
}
static int get_id3_tag(AVFormatContext *s, int len)
{
ID3v2ExtraMeta *id3v2_extra_meta;
ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, len);
if (id3v2_extra_meta) {
ff_id3v2_parse_apic(s, id3v2_extra_meta);
ff_id3v2_parse_chapters(s, id3v2_extra_meta);
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
}
return 0;
}
int ff_asf_handle_byte_array(AVFormatContext *s, const char *name,
int val_len)
{
if (!strcmp(name, "WM/Picture")) // handle cover art
return asf_read_picture(s, val_len);
else if (!strcmp(name, "ID3")) // handle ID3 tag
return get_id3_tag(s, val_len);
return 1;
}
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