* ID3v2 header parser
* Copyright (c) 2003 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "id3v2.h"
-#include "id3v1.h"
#include "libavutil/avstring.h"
+#include "libavutil/dict.h"
#include "libavutil/intreadwrite.h"
-#include "metadata.h"
#include "avio_internal.h"
+#include "internal.h"
+#include "id3v1.h"
+#include "id3v2.h"
+
+const AVMetadataConv ff_id3v2_34_metadata_conv[] = {
+ { "TALB", "album" },
+ { "TCOM", "composer" },
+ { "TCON", "genre" },
+ { "TCOP", "copyright" },
+ { "TENC", "encoded_by" },
+ { "TIT2", "title" },
+ { "TLAN", "language" },
+ { "TPE1", "artist" },
+ { "TPE2", "album_artist" },
+ { "TPE3", "performer" },
+ { "TPOS", "disc" },
+ { "TPUB", "publisher" },
+ { "TRCK", "track" },
+ { "TSSE", "encoder" },
+ { 0 }
+};
-int ff_id3v2_match(const uint8_t *buf, const char * magic)
+const AVMetadataConv ff_id3v2_4_metadata_conv[] = {
+ { "TDRL", "date" },
+ { "TDRC", "date" },
+ { "TDEN", "creation_time" },
+ { "TSOA", "album-sort" },
+ { "TSOP", "artist-sort" },
+ { "TSOT", "title-sort" },
+ { 0 }
+};
+
+static const AVMetadataConv id3v2_2_metadata_conv[] = {
+ { "TAL", "album" },
+ { "TCO", "genre" },
+ { "TT2", "title" },
+ { "TEN", "encoded_by" },
+ { "TP1", "artist" },
+ { "TP2", "album_artist" },
+ { "TP3", "performer" },
+ { "TRK", "track" },
+ { 0 }
+};
+
+const char ff_id3v2_tags[][4] = {
+ "TALB", "TBPM", "TCOM", "TCON", "TCOP", "TDLY", "TENC", "TEXT",
+ "TFLT", "TIT1", "TIT2", "TIT3", "TKEY", "TLAN", "TLEN", "TMED",
+ "TOAL", "TOFN", "TOLY", "TOPE", "TOWN", "TPE1", "TPE2", "TPE3",
+ "TPE4", "TPOS", "TPUB", "TRCK", "TRSN", "TRSO", "TSRC", "TSSE",
+ { 0 },
+};
+
+const char ff_id3v2_4_tags[][4] = {
+ "TDEN", "TDOR", "TDRC", "TDRL", "TDTG", "TIPL", "TMCL", "TMOO",
+ "TPRO", "TSOA", "TSOP", "TSOT", "TSST",
+ { 0 },
+};
+
+const char ff_id3v2_3_tags[][4] = {
+ "TDAT", "TIME", "TORY", "TRDA", "TSIZ", "TYER",
+ { 0 },
+};
+
+const char *ff_id3v2_picture_types[21] = {
+ "Other",
+ "32x32 pixels 'file icon'",
+ "Other file icon",
+ "Cover (front)",
+ "Cover (back)",
+ "Leaflet page",
+ "Media (e.g. label side of CD)",
+ "Lead artist/lead performer/soloist",
+ "Artist/performer",
+ "Conductor",
+ "Band/Orchestra",
+ "Composer",
+ "Lyricist/text writer",
+ "Recording Location",
+ "During recording",
+ "During performance",
+ "Movie/video screen capture",
+ "A bright coloured fish",
+ "Illustration",
+ "Band/artist logotype",
+ "Publisher/Studio logotype",
+};
+
+const CodecMime ff_id3v2_mime_tags[] = {
+ { "image/gif", AV_CODEC_ID_GIF },
+ { "image/jpeg", AV_CODEC_ID_MJPEG },
+ { "image/jpg", AV_CODEC_ID_MJPEG },
+ { "image/png", AV_CODEC_ID_PNG },
+ { "image/tiff", AV_CODEC_ID_TIFF },
+ { "image/bmp", AV_CODEC_ID_BMP },
+ { "JPG", AV_CODEC_ID_MJPEG }, /* ID3v2.2 */
+ { "PNG", AV_CODEC_ID_PNG }, /* ID3v2.2 */
+ { "", AV_CODEC_ID_NONE },
+};
+
+int ff_id3v2_match(const uint8_t *buf, const char *magic)
{
return buf[0] == magic[0] &&
buf[1] == magic[1] &&
buf[2] == magic[2] &&
- buf[3] != 0xff &&
- buf[4] != 0xff &&
- (buf[6] & 0x80) == 0 &&
- (buf[7] & 0x80) == 0 &&
- (buf[8] & 0x80) == 0 &&
- (buf[9] & 0x80) == 0;
+ buf[3] != 0xff &&
+ buf[4] != 0xff &&
+ (buf[6] & 0x80) == 0 &&
+ (buf[7] & 0x80) == 0 &&
+ (buf[8] & 0x80) == 0 &&
+ (buf[9] & 0x80) == 0;
}
-int ff_id3v2_tag_len(const uint8_t * buf)
+int ff_id3v2_tag_len(const uint8_t *buf)
{
int len = ((buf[6] & 0x7f) << 21) +
((buf[7] & 0x7f) << 14) +
((buf[8] & 0x7f) << 7) +
- (buf[9] & 0x7f) +
+ (buf[9] & 0x7f) +
ID3v2_HEADER_SIZE;
if (buf[5] & 0x10)
len += ID3v2_HEADER_SIZE;
return v;
}
-static void read_ttag(AVFormatContext *s, AVIOContext *pb, int taglen, const char *key)
+/**
+ * Free GEOB type extra metadata.
+ */
+static void free_geobtag(void *obj)
{
- char *q, dst[512];
- const char *val = NULL;
- int len, dstlen = sizeof(dst) - 1;
- unsigned genre;
- unsigned int (*get)(AVIOContext*) = avio_rb16;
-
- dst[0] = 0;
- if (taglen < 1)
- return;
+ ID3v2ExtraMetaGEOB *geob = obj;
+ av_free(geob->mime_type);
+ av_free(geob->file_name);
+ av_free(geob->description);
+ av_free(geob->data);
+ av_free(geob);
+}
- taglen--; /* account for encoding type byte */
+/**
+ * Decode characters to UTF-8 according to encoding type. The decoded buffer is
+ * always null terminated. Stop reading when either *maxread bytes are read from
+ * pb or U+0000 character is found.
+ *
+ * @param dst Pointer where the address of the buffer with the decoded bytes is
+ * stored. Buffer must be freed by caller.
+ * @param maxread Pointer to maximum number of characters to read from the
+ * AVIOContext. After execution the value is decremented by the number of bytes
+ * actually read.
+ * @returns 0 if no error occurred, dst is uninitialized on error
+ */
+static int decode_str(AVFormatContext *s, AVIOContext *pb, int encoding,
+ uint8_t **dst, int *maxread)
+{
+ int ret;
+ uint8_t tmp;
+ uint32_t ch = 1;
+ int left = *maxread;
+ unsigned int (*get)(AVIOContext*) = avio_rb16;
+ AVIOContext *dynbuf;
- switch (avio_r8(pb)) { /* encoding type */
+ if ((ret = avio_open_dyn_buf(&dynbuf)) < 0) {
+ av_log(s, AV_LOG_ERROR, "Error opening memory stream\n");
+ return ret;
+ }
+ switch (encoding) {
case ID3v2_ENCODING_ISO8859:
- q = dst;
- while (taglen-- && q - dst < dstlen - 7) {
- uint8_t tmp;
- PUT_UTF8(avio_r8(pb), tmp, *q++ = tmp;)
+ while (left && ch) {
+ ch = avio_r8(pb);
+ PUT_UTF8(ch, tmp, avio_w8(dynbuf, tmp);)
+ left--;
}
- *q = 0;
break;
case ID3v2_ENCODING_UTF16BOM:
- taglen -= 2;
+ if ((left -= 2) < 0) {
+ av_log(s, AV_LOG_ERROR, "Cannot read BOM value, input too short\n");
+ avio_close_dyn_buf(dynbuf, dst);
+ av_freep(dst);
+ return AVERROR_INVALIDDATA;
+ }
switch (avio_rb16(pb)) {
case 0xfffe:
get = avio_rl16;
case 0xfeff:
break;
default:
- av_log(s, AV_LOG_ERROR, "Incorrect BOM value in tag %s.\n", key);
- return;
+ av_log(s, AV_LOG_ERROR, "Incorrect BOM value\n");
+ avio_close_dyn_buf(dynbuf, dst);
+ av_freep(dst);
+ *maxread = left;
+ return AVERROR_INVALIDDATA;
}
// fall-through
case ID3v2_ENCODING_UTF16BE:
- q = dst;
- while (taglen > 1 && q - dst < dstlen - 7) {
- uint32_t ch;
- uint8_t tmp;
-
- GET_UTF16(ch, ((taglen -= 2) >= 0 ? get(pb) : 0), break;)
- PUT_UTF8(ch, tmp, *q++ = tmp;)
+ while ((left > 1) && ch) {
+ GET_UTF16(ch, ((left -= 2) >= 0 ? get(pb) : 0), break;)
+ PUT_UTF8(ch, tmp, avio_w8(dynbuf, tmp);)
}
- *q = 0;
+ if (left < 0)
+ left += 2; /* did not read last char from pb */
break;
case ID3v2_ENCODING_UTF8:
- len = FFMIN(taglen, dstlen);
- avio_read(pb, dst, len);
- dst[len] = 0;
+ while (left && ch) {
+ ch = avio_r8(pb);
+ avio_w8(dynbuf, ch);
+ left--;
+ }
break;
default:
- av_log(s, AV_LOG_WARNING, "Unknown encoding in tag %s.\n", key);
+ av_log(s, AV_LOG_WARNING, "Unknown encoding\n");
+ }
+
+ if (ch)
+ avio_w8(dynbuf, 0);
+
+ avio_close_dyn_buf(dynbuf, dst);
+ *maxread = left;
+
+ return 0;
+}
+
+/**
+ * Parse a text tag.
+ */
+static void read_ttag(AVFormatContext *s, AVIOContext *pb, int taglen,
+ const char *key)
+{
+ uint8_t *dst;
+ int encoding, dict_flags = AV_DICT_DONT_OVERWRITE | AV_DICT_DONT_STRDUP_VAL;
+ unsigned genre;
+
+ if (taglen < 1)
+ return;
+
+ encoding = avio_r8(pb);
+ taglen--; /* account for encoding type byte */
+
+ if (decode_str(s, pb, encoding, &dst, &taglen) < 0) {
+ av_log(s, AV_LOG_ERROR, "Error reading frame %s, skipped\n", key);
+ return;
}
- if (!(strcmp(key, "TCON") && strcmp(key, "TCO"))
- && (sscanf(dst, "(%d)", &genre) == 1 || sscanf(dst, "%d", &genre) == 1)
- && genre <= ID3v1_GENRE_MAX)
- val = ff_id3v1_genre_str[genre];
- else if (!(strcmp(key, "TXXX") && strcmp(key, "TXX"))) {
- /* dst now contains two 0-terminated strings */
- dst[dstlen] = 0;
- len = strlen(dst);
+ if (!(strcmp(key, "TCON") && strcmp(key, "TCO")) &&
+ (sscanf(dst, "(%d)", &genre) == 1 || sscanf(dst, "%d", &genre) == 1) &&
+ genre <= ID3v1_GENRE_MAX) {
+ av_freep(&dst);
+ dst = av_strdup(ff_id3v1_genre_str[genre]);
+ } else if (!(strcmp(key, "TXXX") && strcmp(key, "TXX"))) {
+ /* dst now contains the key, need to get value */
key = dst;
- val = dst + FFMIN(len + 1, dstlen);
+ if (decode_str(s, pb, encoding, &dst, &taglen) < 0) {
+ av_log(s, AV_LOG_ERROR, "Error reading frame %s, skipped\n", key);
+ av_freep(&key);
+ return;
+ }
+ dict_flags |= AV_DICT_DONT_STRDUP_KEY;
+ } else if (!*dst)
+ av_freep(&dst);
+
+ if (dst)
+ av_dict_set(&s->metadata, key, dst, dict_flags);
+}
+
+/**
+ * Parse GEOB tag into a ID3v2ExtraMetaGEOB struct.
+ */
+static void read_geobtag(AVFormatContext *s, AVIOContext *pb, int taglen,
+ char *tag, ID3v2ExtraMeta **extra_meta)
+{
+ ID3v2ExtraMetaGEOB *geob_data = NULL;
+ ID3v2ExtraMeta *new_extra = NULL;
+ char encoding;
+ unsigned int len;
+
+ if (taglen < 1)
+ return;
+
+ geob_data = av_mallocz(sizeof(ID3v2ExtraMetaGEOB));
+ if (!geob_data) {
+ av_log(s, AV_LOG_ERROR, "Failed to alloc %zu bytes\n",
+ sizeof(ID3v2ExtraMetaGEOB));
+ return;
}
- else if (*dst)
- val = dst;
- if (val)
- av_metadata_set2(&s->metadata, key, val, AV_METADATA_DONT_OVERWRITE);
+ new_extra = av_mallocz(sizeof(ID3v2ExtraMeta));
+ if (!new_extra) {
+ av_log(s, AV_LOG_ERROR, "Failed to alloc %zu bytes\n",
+ sizeof(ID3v2ExtraMeta));
+ goto fail;
+ }
+
+ /* read encoding type byte */
+ encoding = avio_r8(pb);
+ taglen--;
+
+ /* read MIME type (always ISO-8859) */
+ if (decode_str(s, pb, ID3v2_ENCODING_ISO8859, &geob_data->mime_type,
+ &taglen) < 0 ||
+ taglen <= 0)
+ goto fail;
+
+ /* read file name */
+ if (decode_str(s, pb, encoding, &geob_data->file_name, &taglen) < 0 ||
+ taglen <= 0)
+ goto fail;
+
+ /* read content description */
+ if (decode_str(s, pb, encoding, &geob_data->description, &taglen) < 0 ||
+ taglen < 0)
+ goto fail;
+
+ if (taglen) {
+ /* save encapsulated binary data */
+ geob_data->data = av_malloc(taglen);
+ if (!geob_data->data) {
+ av_log(s, AV_LOG_ERROR, "Failed to alloc %d bytes\n", taglen);
+ goto fail;
+ }
+ if ((len = avio_read(pb, geob_data->data, taglen)) < taglen)
+ av_log(s, AV_LOG_WARNING,
+ "Error reading GEOB frame, data truncated.\n");
+ geob_data->datasize = len;
+ } else {
+ geob_data->data = NULL;
+ geob_data->datasize = 0;
+ }
+
+ /* add data to the list */
+ new_extra->tag = "GEOB";
+ new_extra->data = geob_data;
+ new_extra->next = *extra_meta;
+ *extra_meta = new_extra;
+
+ return;
+
+fail:
+ av_log(s, AV_LOG_ERROR, "Error reading frame %s, skipped\n", tag);
+ free_geobtag(geob_data);
+ av_free(new_extra);
+ return;
}
static int is_number(const char *str)
{
- while (*str >= '0' && *str <= '9') str++;
+ while (*str >= '0' && *str <= '9')
+ str++;
return !*str;
}
-static AVMetadataTag* get_date_tag(AVMetadata *m, const char *tag)
+static AVDictionaryEntry *get_date_tag(AVDictionary *m, const char *tag)
{
- AVMetadataTag *t;
- if ((t = av_metadata_get(m, tag, NULL, AV_METADATA_MATCH_CASE)) &&
+ AVDictionaryEntry *t;
+ if ((t = av_dict_get(m, tag, NULL, AV_DICT_MATCH_CASE)) &&
strlen(t->value) == 4 && is_number(t->value))
return t;
return NULL;
}
-static void merge_date(AVMetadata **m)
+static void merge_date(AVDictionary **m)
{
- AVMetadataTag *t;
- char date[17] = {0}; // YYYY-MM-DD hh:mm
+ AVDictionaryEntry *t;
+ char date[17] = { 0 }; // YYYY-MM-DD hh:mm
if (!(t = get_date_tag(*m, "TYER")) &&
!(t = get_date_tag(*m, "TYE")))
return;
av_strlcpy(date, t->value, 5);
- av_metadata_set2(m, "TYER", NULL, 0);
- av_metadata_set2(m, "TYE", NULL, 0);
+ av_dict_set(m, "TYER", NULL, 0);
+ av_dict_set(m, "TYE", NULL, 0);
if (!(t = get_date_tag(*m, "TDAT")) &&
!(t = get_date_tag(*m, "TDA")))
goto finish;
snprintf(date + 4, sizeof(date) - 4, "-%.2s-%.2s", t->value + 2, t->value);
- av_metadata_set2(m, "TDAT", NULL, 0);
- av_metadata_set2(m, "TDA", NULL, 0);
+ av_dict_set(m, "TDAT", NULL, 0);
+ av_dict_set(m, "TDA", NULL, 0);
if (!(t = get_date_tag(*m, "TIME")) &&
!(t = get_date_tag(*m, "TIM")))
goto finish;
- snprintf(date + 10, sizeof(date) - 10, " %.2s:%.2s", t->value, t->value + 2);
- av_metadata_set2(m, "TIME", NULL, 0);
- av_metadata_set2(m, "TIM", NULL, 0);
+ snprintf(date + 10, sizeof(date) - 10,
+ " %.2s:%.2s", t->value, t->value + 2);
+ av_dict_set(m, "TIME", NULL, 0);
+ av_dict_set(m, "TIM", NULL, 0);
finish:
if (date[0])
- av_metadata_set2(m, "date", date, 0);
+ av_dict_set(m, "date", date, 0);
}
-static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags)
+static void free_apic(void *obj)
+{
+ ID3v2ExtraMetaAPIC *apic = obj;
+ av_buffer_unref(&apic->buf);
+ av_freep(&apic->description);
+ av_freep(&apic);
+}
+
+static void read_apic(AVFormatContext *s, AVIOContext *pb, int taglen,
+ char *tag, ID3v2ExtraMeta **extra_meta)
+{
+ int enc, pic_type;
+ char mimetype[64];
+ const CodecMime *mime = ff_id3v2_mime_tags;
+ enum AVCodecID id = AV_CODEC_ID_NONE;
+ ID3v2ExtraMetaAPIC *apic = NULL;
+ ID3v2ExtraMeta *new_extra = NULL;
+ int64_t end = avio_tell(pb) + taglen;
+
+ if (taglen <= 4)
+ goto fail;
+
+ new_extra = av_mallocz(sizeof(*new_extra));
+ apic = av_mallocz(sizeof(*apic));
+ if (!new_extra || !apic)
+ goto fail;
+
+ enc = avio_r8(pb);
+ taglen--;
+
+ /* mimetype */
+ taglen -= avio_get_str(pb, taglen, mimetype, sizeof(mimetype));
+ while (mime->id != AV_CODEC_ID_NONE) {
+ if (!av_strncasecmp(mime->str, mimetype, sizeof(mimetype))) {
+ id = mime->id;
+ break;
+ }
+ mime++;
+ }
+ if (id == AV_CODEC_ID_NONE) {
+ av_log(s, AV_LOG_WARNING,
+ "Unknown attached picture mimetype: %s, skipping.\n", mimetype);
+ goto fail;
+ }
+ apic->id = id;
+
+ /* picture type */
+ pic_type = avio_r8(pb);
+ taglen--;
+ if (pic_type < 0 || pic_type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types)) {
+ av_log(s, AV_LOG_WARNING, "Unknown attached picture type %d.\n",
+ pic_type);
+ pic_type = 0;
+ }
+ apic->type = ff_id3v2_picture_types[pic_type];
+
+ /* description and picture data */
+ if (decode_str(s, pb, enc, &apic->description, &taglen) < 0) {
+ av_log(s, AV_LOG_ERROR,
+ "Error decoding attached picture description.\n");
+ goto fail;
+ }
+
+ apic->buf = av_buffer_alloc(taglen + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!apic->buf || avio_read(pb, apic->buf->data, taglen) != taglen)
+ goto fail;
+ memset(apic->buf->data + taglen, 0, FF_INPUT_BUFFER_PADDING_SIZE);
+
+ new_extra->tag = "APIC";
+ new_extra->data = apic;
+ new_extra->next = *extra_meta;
+ *extra_meta = new_extra;
+
+ return;
+
+fail:
+ if (apic)
+ free_apic(apic);
+ av_freep(&new_extra);
+ avio_seek(pb, end, SEEK_SET);
+}
+
+typedef struct ID3v2EMFunc {
+ const char *tag3;
+ const char *tag4;
+ void (*read)(AVFormatContext *, AVIOContext *, int, char *,
+ ID3v2ExtraMeta **);
+ void (*free)(void *obj);
+} ID3v2EMFunc;
+
+static const ID3v2EMFunc id3v2_extra_meta_funcs[] = {
+ { "GEO", "GEOB", read_geobtag, free_geobtag },
+ { "PIC", "APIC", read_apic, free_apic },
+ { NULL }
+};
+
+/**
+ * Get the corresponding ID3v2EMFunc struct for a tag.
+ * @param isv34 Determines if v2.2 or v2.3/4 strings are used
+ * @return A pointer to the ID3v2EMFunc struct if found, NULL otherwise.
+ */
+static const ID3v2EMFunc *get_extra_meta_func(const char *tag, int isv34)
+{
+ int i = 0;
+ while (id3v2_extra_meta_funcs[i].tag3) {
+ if (!memcmp(tag,
+ (isv34 ? id3v2_extra_meta_funcs[i].tag4 :
+ id3v2_extra_meta_funcs[i].tag3),
+ (isv34 ? 4 : 3)))
+ return &id3v2_extra_meta_funcs[i];
+ i++;
+ }
+ return NULL;
+}
+
+static void id3v2_parse(AVFormatContext *s, int len, uint8_t version,
+ uint8_t flags, ID3v2ExtraMeta **extra_meta)
{
int isv34, tlen, unsync;
char tag[5];
- int64_t next;
+ int64_t next, end = avio_tell(s->pb) + len;
int taghdrlen;
- const char *reason;
+ const char *reason = NULL;
AVIOContext pb;
+ AVIOContext *pbx;
unsigned char *buffer = NULL;
- int buffer_size = 0;
+ int buffer_size = 0;
+ const ID3v2EMFunc *extra_func;
switch (version) {
case 2:
reason = "compression";
goto error;
}
- isv34 = 0;
+ isv34 = 0;
taghdrlen = 6;
break;
case 3:
case 4:
- isv34 = 1;
+ isv34 = 1;
taghdrlen = 10;
break;
unsync = flags & 0x80;
- if (isv34 && flags & 0x40) /* Extended header present, just skip over it */
- avio_seek(s->pb, get_size(s->pb, 4), SEEK_CUR);
+ if (isv34 && flags & 0x40) { /* Extended header present, just skip over it */
+ int extlen = get_size(s->pb, 4);
+ if (version == 4)
+ /* In v2.4 the length includes the length field we just read. */
+ extlen -= 4;
+
+ if (extlen < 0) {
+ reason = "invalid extended header length";
+ goto error;
+ }
+ avio_skip(s->pb, extlen);
+ }
while (len >= taghdrlen) {
- unsigned int tflags;
- int tunsync = 0;
+ unsigned int tflags = 0;
+ int tunsync = 0;
if (isv34) {
avio_read(s->pb, tag, 4);
tag[4] = 0;
- if(version==3){
+ if (version == 3) {
tlen = avio_rb32(s->pb);
- }else
+ } else
tlen = get_size(s->pb, 4);
- tflags = avio_rb16(s->pb);
+ tflags = avio_rb16(s->pb);
tunsync = tflags & ID3v2_FLAG_UNSYNCH;
} else {
avio_read(s->pb, tag, 3);
tag[3] = 0;
- tlen = avio_rb24(s->pb);
+ tlen = avio_rb24(s->pb);
}
- len -= taghdrlen + tlen;
-
- if (len < 0)
+ if (tlen < 0 || tlen > len - taghdrlen) {
+ av_log(s, AV_LOG_WARNING,
+ "Invalid size in frame %s, skipping the rest of tag.\n",
+ tag);
break;
-
+ }
+ len -= taghdrlen + tlen;
next = avio_tell(s->pb) + tlen;
+ if (!tlen) {
+ if (tag[0])
+ av_log(s, AV_LOG_DEBUG, "Invalid empty frame %s, skipping.\n",
+ tag);
+ continue;
+ }
+
if (tflags & ID3v2_FLAG_DATALEN) {
avio_rb32(s->pb);
tlen -= 4;
}
if (tflags & (ID3v2_FLAG_ENCRYPTION | ID3v2_FLAG_COMPRESSION)) {
- av_log(s, AV_LOG_WARNING, "Skipping encrypted/compressed ID3v2 frame %s.\n", tag);
- avio_seek(s->pb, tlen, SEEK_CUR);
- } else if (tag[0] == 'T') {
+ av_log(s, AV_LOG_WARNING,
+ "Skipping encrypted/compressed ID3v2 frame %s.\n", tag);
+ avio_skip(s->pb, tlen);
+ /* check for text tag or supported special meta tag */
+ } else if (tag[0] == 'T' ||
+ (extra_meta &&
+ (extra_func = get_extra_meta_func(tag, isv34)))) {
if (unsync || tunsync) {
- int i, j;
+ int64_t end = avio_tell(s->pb) + tlen;
+ uint8_t *b;
av_fast_malloc(&buffer, &buffer_size, tlen);
- for (i = 0, j = 0; i < tlen; i++, j++) {
- buffer[j] = avio_r8(s->pb);
- if (j > 0 && !buffer[j] && buffer[j - 1] == 0xff) {
- /* Unsynchronised byte, skip it */
- j--;
+ if (!buffer) {
+ av_log(s, AV_LOG_ERROR, "Failed to alloc %d bytes\n", tlen);
+ goto seek;
+ }
+ b = buffer;
+ while (avio_tell(s->pb) < end && !s->pb->eof_reached) {
+ *b++ = avio_r8(s->pb);
+ if (*(b - 1) == 0xff && avio_tell(s->pb) < end - 1 &&
+ !s->pb->eof_reached ) {
+ uint8_t val = avio_r8(s->pb);
+ *b++ = val ? val : avio_r8(s->pb);
}
}
- ffio_init_context(&pb, buffer, j, 0, NULL, NULL, NULL, NULL);
- read_ttag(s, &pb, j, tag);
+ ffio_init_context(&pb, buffer, b - buffer, 0, NULL, NULL, NULL,
+ NULL);
+ tlen = b - buffer;
+ pbx = &pb; // read from sync buffer
} else {
- read_ttag(s, s->pb, tlen, tag);
+ pbx = s->pb; // read straight from input
}
- }
- else if (!tag[0]) {
+ if (tag[0] == 'T')
+ /* parse text tag */
+ read_ttag(s, pbx, tlen, tag);
+ else
+ /* parse special meta tag */
+ extra_func->read(s, pbx, tlen, tag, extra_meta);
+ } else if (!tag[0]) {
if (tag[1])
av_log(s, AV_LOG_WARNING, "invalid frame id, assuming padding");
- avio_seek(s->pb, tlen, SEEK_CUR);
+ avio_skip(s->pb, tlen);
break;
}
/* Skip to end of tag */
+seek:
avio_seek(s->pb, next, SEEK_SET);
}
- if (len > 0) {
- /* Skip padding */
- avio_seek(s->pb, len, SEEK_CUR);
- }
- if (version == 4 && flags & 0x10) /* Footer preset, always 10 bytes, skip over it */
- avio_seek(s->pb, 10, SEEK_CUR);
+ /* Footer preset, always 10 bytes, skip over it */
+ if (version == 4 && flags & 0x10)
+ end += 10;
+error:
+ if (reason)
+ av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n",
+ version, reason);
+ avio_seek(s->pb, end, SEEK_SET);
av_free(buffer);
return;
-
- error:
- av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n", version, reason);
- avio_seek(s->pb, len, SEEK_CUR);
- av_free(buffer);
}
-void ff_id3v2_read(AVFormatContext *s, const char *magic)
+void ff_id3v2_read(AVFormatContext *s, const char *magic,
+ ID3v2ExtraMeta **extra_meta)
{
int len, ret;
uint8_t buf[ID3v2_HEADER_SIZE];
- int found_header;
+ int found_header;
int64_t off;
do {
ret = avio_read(s->pb, buf, ID3v2_HEADER_SIZE);
if (ret != ID3v2_HEADER_SIZE)
break;
- found_header = ff_id3v2_match(buf, magic);
- if (found_header) {
+ found_header = ff_id3v2_match(buf, magic);
+ if (found_header) {
/* parse ID3v2 header */
len = ((buf[6] & 0x7f) << 21) |
((buf[7] & 0x7f) << 14) |
((buf[8] & 0x7f) << 7) |
(buf[9] & 0x7f);
- ff_id3v2_parse(s, len, buf[3], buf[5]);
+ id3v2_parse(s, len, buf[3], buf[5], extra_meta);
} else {
avio_seek(s->pb, off, SEEK_SET);
}
} while (found_header);
ff_metadata_conv(&s->metadata, NULL, ff_id3v2_34_metadata_conv);
- ff_metadata_conv(&s->metadata, NULL, ff_id3v2_2_metadata_conv);
+ ff_metadata_conv(&s->metadata, NULL, id3v2_2_metadata_conv);
ff_metadata_conv(&s->metadata, NULL, ff_id3v2_4_metadata_conv);
merge_date(&s->metadata);
}
-const AVMetadataConv ff_id3v2_34_metadata_conv[] = {
- { "TALB", "album"},
- { "TCOM", "composer"},
- { "TCON", "genre"},
- { "TCOP", "copyright"},
- { "TENC", "encoded_by"},
- { "TIT2", "title"},
- { "TLAN", "language"},
- { "TPE1", "artist"},
- { "TPE2", "album_artist"},
- { "TPE3", "performer"},
- { "TPOS", "disc"},
- { "TPUB", "publisher"},
- { "TRCK", "track"},
- { "TSSE", "encoder"},
- { 0 }
-};
+void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
+{
+ ID3v2ExtraMeta *current = *extra_meta, *next;
+ const ID3v2EMFunc *extra_func;
+
+ while (current) {
+ if ((extra_func = get_extra_meta_func(current->tag, 1)))
+ extra_func->free(current->data);
+ next = current->next;
+ av_freep(¤t);
+ current = next;
+ }
+}
-const AVMetadataConv ff_id3v2_4_metadata_conv[] = {
- { "TDRL", "date"},
- { "TDRC", "date"},
- { "TDEN", "creation_time"},
- { "TSOA", "album-sort"},
- { "TSOP", "artist-sort"},
- { "TSOT", "title-sort"},
- { 0 }
-};
+int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta **extra_meta)
+{
+ ID3v2ExtraMeta *cur;
-const AVMetadataConv ff_id3v2_2_metadata_conv[] = {
- { "TAL", "album"},
- { "TCO", "genre"},
- { "TT2", "title"},
- { "TEN", "encoded_by"},
- { "TP1", "artist"},
- { "TP2", "album_artist"},
- { "TP3", "performer"},
- { "TRK", "track"},
- { 0 }
-};
+ for (cur = *extra_meta; cur; cur = cur->next) {
+ ID3v2ExtraMetaAPIC *apic;
+ AVStream *st;
+ if (strcmp(cur->tag, "APIC"))
+ continue;
+ apic = cur->data;
-const char ff_id3v2_tags[][4] = {
- "TALB", "TBPM", "TCOM", "TCON", "TCOP", "TDLY", "TENC", "TEXT",
- "TFLT", "TIT1", "TIT2", "TIT3", "TKEY", "TLAN", "TLEN", "TMED",
- "TOAL", "TOFN", "TOLY", "TOPE", "TOWN", "TPE1", "TPE2", "TPE3",
- "TPE4", "TPOS", "TPUB", "TRCK", "TRSN", "TRSO", "TSRC", "TSSE",
- { 0 },
-};
+ if (!(st = avformat_new_stream(s, NULL)))
+ return AVERROR(ENOMEM);
-const char ff_id3v2_4_tags[][4] = {
- "TDEN", "TDOR", "TDRC", "TDRL", "TDTG", "TIPL", "TMCL", "TMOO",
- "TPRO", "TSOA", "TSOP", "TSOT", "TSST",
- { 0 },
-};
+ st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ st->codec->codec_id = apic->id;
+ av_dict_set(&st->metadata, "title", apic->description, 0);
+ av_dict_set(&st->metadata, "comment", apic->type, 0);
-const char ff_id3v2_3_tags[][4] = {
- "TDAT", "TIME", "TORY", "TRDA", "TSIZ", "TYER",
- { 0 },
-};
+ av_init_packet(&st->attached_pic);
+ st->attached_pic.buf = apic->buf;
+ st->attached_pic.data = apic->buf->data;
+ st->attached_pic.size = apic->buf->size - FF_INPUT_BUFFER_PADDING_SIZE;
+ st->attached_pic.stream_index = st->index;
+ st->attached_pic.flags |= AV_PKT_FLAG_KEY;
+
+ apic->buf = NULL;
+ }
+
+ return 0;
+}
projects / ffmpeg / blobdiff