2 * Raw FLAC picture parser
3 * Copyright (c) 2001 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/avassert.h"
24 #include "flac_picture.h"
28 int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
30 const CodecMime *mime = ff_id3v2_mime_tags;
31 enum AVCodecID id = AV_CODEC_ID_NONE;
32 AVBufferRef *data = NULL;
33 uint8_t mimetype[64], *desc = NULL;
34 AVIOContext *pb = NULL;
36 int type, width, height;
39 pb = avio_alloc_context(buf, buf_size, 0, NULL, NULL, NULL, NULL);
41 return AVERROR(ENOMEM);
43 /* read the picture type */
45 if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
46 av_log(s, AV_LOG_ERROR, "Invalid picture type: %d.\n", type);
47 if (s->error_recognition & AV_EF_EXPLODE) {
48 RETURN_ERROR(AVERROR_INVALIDDATA);
53 /* picture mimetype */
56 avio_read(pb, mimetype, FFMIN(len, sizeof(mimetype) - 1)) != len) {
57 av_log(s, AV_LOG_ERROR, "Could not read mimetype from an attached "
59 if (s->error_recognition & AV_EF_EXPLODE)
60 ret = AVERROR_INVALIDDATA;
63 av_assert0(len < sizeof(mimetype));
66 while (mime->id != AV_CODEC_ID_NONE) {
67 if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
73 if (id == AV_CODEC_ID_NONE) {
74 av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
76 if (s->error_recognition & AV_EF_EXPLODE)
77 ret = AVERROR_INVALIDDATA;
81 /* picture description */
84 if (!(desc = av_malloc(len + 1))) {
85 RETURN_ERROR(AVERROR(ENOMEM));
88 if (avio_read(pb, desc, len) != len) {
89 av_log(s, AV_LOG_ERROR, "Error reading attached picture description.\n");
90 if (s->error_recognition & AV_EF_EXPLODE)
97 /* picture metadata */
98 width = avio_rb32(pb);
99 height = avio_rb32(pb);
105 av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
106 if (s->error_recognition & AV_EF_EXPLODE)
107 ret = AVERROR_INVALIDDATA;
110 if (!(data = av_buffer_alloc(len + FF_INPUT_BUFFER_PADDING_SIZE))) {
111 RETURN_ERROR(AVERROR(ENOMEM));
113 memset(data->data + len, 0, FF_INPUT_BUFFER_PADDING_SIZE);
114 if (avio_read(pb, data->data, len) != len) {
115 av_log(s, AV_LOG_ERROR, "Error reading attached picture data.\n");
116 if (s->error_recognition & AV_EF_EXPLODE)
121 st = avformat_new_stream(s, NULL);
123 RETURN_ERROR(AVERROR(ENOMEM));
126 av_init_packet(&st->attached_pic);
127 st->attached_pic.buf = data;
128 st->attached_pic.data = data->data;
129 st->attached_pic.size = len;
130 st->attached_pic.stream_index = st->index;
131 st->attached_pic.flags |= AV_PKT_FLAG_KEY;
133 st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
134 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
135 st->codec->codec_id = id;
136 st->codec->width = width;
137 st->codec->height = height;
138 av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0);
140 av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL);
147 av_buffer_unref(&data);