*/
#include <stdint.h>
+#include <string.h>
#include "libavutil/dict.h"
#include "libavutil/intreadwrite.h"
#include "avio.h"
#include "id3v2.h"
-static void id3v2_put_size(AVFormatContext *s, int size)
+static void id3v2_put_size(AVIOContext *pb, int size)
{
- avio_w8(s->pb, size >> 21 & 0x7f);
- avio_w8(s->pb, size >> 14 & 0x7f);
- avio_w8(s->pb, size >> 7 & 0x7f);
- avio_w8(s->pb, size & 0x7f);
+ avio_w8(pb, size >> 21 & 0x7f);
+ avio_w8(pb, size >> 14 & 0x7f);
+ avio_w8(pb, size >> 7 & 0x7f);
+ avio_w8(pb, size & 0x7f);
}
static int string_is_ascii(const uint8_t *str)
return !*str;
}
+static void id3v2_encode_string(AVIOContext *pb, const uint8_t *str,
+ enum ID3v2Encoding enc)
+{
+ int (*put)(AVIOContext*, const char*);
+
+ if (enc == ID3v2_ENCODING_UTF16BOM) {
+ avio_wl16(pb, 0xFEFF); /* BOM */
+ put = avio_put_str16le;
+ } else
+ put = avio_put_str;
+
+ put(pb, str);
+}
+
/**
* Write a text frame with one (normal frames) or two (TXXX frames) strings
* according to encoding (only UTF-8 or UTF-16+BOM supported).
* @return number of bytes written or a negative error code.
*/
-static int id3v2_put_ttag(AVFormatContext *s, const char *str1, const char *str2,
+static int id3v2_put_ttag(ID3v2EncContext *id3, AVIOContext *avioc, const char *str1, const char *str2,
uint32_t tag, enum ID3v2Encoding enc)
{
int len;
uint8_t *pb;
- int (*put)(AVIOContext*, const char*);
AVIOContext *dyn_buf;
if (avio_open_dyn_buf(&dyn_buf) < 0)
return AVERROR(ENOMEM);
enc = ID3v2_ENCODING_ISO8859;
avio_w8(dyn_buf, enc);
- if (enc == ID3v2_ENCODING_UTF16BOM) {
- avio_wl16(dyn_buf, 0xFEFF); /* BOM */
- put = avio_put_str16le;
- } else
- put = avio_put_str;
-
- put(dyn_buf, str1);
+ id3v2_encode_string(dyn_buf, str1, enc);
if (str2)
- put(dyn_buf, str2);
+ id3v2_encode_string(dyn_buf, str2, enc);
len = avio_close_dyn_buf(dyn_buf, &pb);
- avio_wb32(s->pb, tag);
- id3v2_put_size(s, len);
- avio_wb16(s->pb, 0);
- avio_write(s->pb, pb, len);
+ avio_wb32(avioc, tag);
+ /* ID3v2.3 frame size is not synchsafe */
+ if (id3->version == 3)
+ avio_wb32(avioc, len);
+ else
+ id3v2_put_size(avioc, len);
+ avio_wb16(avioc, 0);
+ avio_write(avioc, pb, len);
av_freep(&pb);
return len + ID3v2_HEADER_SIZE;
}
-static int id3v2_check_write_tag(AVFormatContext *s, AVDictionaryEntry *t, const char table[][4],
- enum ID3v2Encoding enc)
+static int id3v2_check_write_tag(ID3v2EncContext *id3, AVIOContext *pb, AVDictionaryEntry *t,
+ const char table[][4], enum ID3v2Encoding enc)
{
uint32_t tag;
int i;
tag = AV_RB32(t->key);
for (i = 0; *table[i]; i++)
if (tag == AV_RB32(table[i]))
- return id3v2_put_ttag(s, t->value, NULL, tag, enc);
+ return id3v2_put_ttag(id3, pb, t->value, NULL, tag, enc);
return -1;
}
-int ff_id3v2_write(struct AVFormatContext *s, int id3v2_version,
- const char *magic)
+void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version,
+ const char *magic)
{
- int64_t size_pos, cur_pos;
- AVDictionaryEntry *t = NULL;
+ id3->version = id3v2_version;
- int totlen = 0, enc = id3v2_version == 3 ? ID3v2_ENCODING_UTF16BOM :
- ID3v2_ENCODING_UTF8;
-
-
- avio_wb32(s->pb, MKBETAG(magic[0], magic[1], magic[2], id3v2_version));
- avio_w8(s->pb, 0);
- avio_w8(s->pb, 0); /* flags */
+ avio_wb32(pb, MKBETAG(magic[0], magic[1], magic[2], id3v2_version));
+ avio_w8(pb, 0);
+ avio_w8(pb, 0); /* flags */
/* reserve space for size */
- size_pos = avio_tell(s->pb);
- avio_wb32(s->pb, 0);
+ id3->size_pos = avio_tell(pb);
+ avio_wb32(pb, 0);
+}
+
+int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
+{
+ AVDictionaryEntry *t = NULL;
+ int enc = id3->version == 3 ? ID3v2_ENCODING_UTF16BOM :
+ ID3v2_ENCODING_UTF8;
ff_metadata_conv(&s->metadata, ff_id3v2_34_metadata_conv, NULL);
- if (id3v2_version == 4)
+ if (id3->version == 4)
ff_metadata_conv(&s->metadata, ff_id3v2_4_metadata_conv, NULL);
while ((t = av_dict_get(s->metadata, "", t, AV_DICT_IGNORE_SUFFIX))) {
int ret;
- if ((ret = id3v2_check_write_tag(s, t, ff_id3v2_tags, enc)) > 0) {
- totlen += ret;
+ if ((ret = id3v2_check_write_tag(id3, s->pb, t, ff_id3v2_tags, enc)) > 0) {
+ id3->len += ret;
continue;
}
- if ((ret = id3v2_check_write_tag(s, t, id3v2_version == 3 ?
+ if ((ret = id3v2_check_write_tag(id3, s->pb, t, id3->version == 3 ?
ff_id3v2_3_tags : ff_id3v2_4_tags, enc)) > 0) {
- totlen += ret;
+ id3->len += ret;
continue;
}
/* unknown tag, write as TXXX frame */
- if ((ret = id3v2_put_ttag(s, t->key, t->value, MKBETAG('T', 'X', 'X', 'X'), enc)) < 0)
+ if ((ret = id3v2_put_ttag(id3, s->pb, t->key, t->value, MKBETAG('T', 'X', 'X', 'X'), enc)) < 0)
return ret;
- totlen += ret;
+ id3->len += ret;
+ }
+
+ return 0;
+}
+
+int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt)
+{
+ AVStream *st = s->streams[pkt->stream_index];
+ AVDictionaryEntry *e;
+
+ AVIOContext *dyn_buf;
+ uint8_t *buf;
+ const CodecMime *mime = ff_id3v2_mime_tags;
+ const char *mimetype = NULL, *desc = "";
+ int enc = id3->version == 3 ? ID3v2_ENCODING_UTF16BOM :
+ ID3v2_ENCODING_UTF8;
+ int i, len, type = 0;
+
+ /* get the mimetype*/
+ while (mime->id != AV_CODEC_ID_NONE) {
+ if (mime->id == st->codec->codec_id) {
+ mimetype = mime->str;
+ break;
+ }
+ mime++;
+ }
+ if (!mimetype) {
+ av_log(s, AV_LOG_ERROR, "No mimetype is known for stream %d, cannot "
+ "write an attached picture.\n", st->index);
+ return AVERROR(EINVAL);
}
- cur_pos = avio_tell(s->pb);
- avio_seek(s->pb, size_pos, SEEK_SET);
- id3v2_put_size(s, totlen);
- avio_seek(s->pb, cur_pos, SEEK_SET);
+ /* get the picture type */
+ e = av_dict_get(st->metadata, "comment", NULL, 0);
+ for (i = 0; e && i < FF_ARRAY_ELEMS(ff_id3v2_picture_types); i++) {
+ if (strstr(ff_id3v2_picture_types[i], e->value) == ff_id3v2_picture_types[i]) {
+ type = i;
+ break;
+ }
+ }
+
+ /* get the description */
+ if ((e = av_dict_get(st->metadata, "title", NULL, 0)))
+ desc = e->value;
+
+ /* start writing */
+ if (avio_open_dyn_buf(&dyn_buf) < 0)
+ return AVERROR(ENOMEM);
+
+ avio_w8(dyn_buf, enc);
+ avio_put_str(dyn_buf, mimetype);
+ avio_w8(dyn_buf, type);
+ id3v2_encode_string(dyn_buf, desc, enc);
+ avio_write(dyn_buf, pkt->data, pkt->size);
+ len = avio_close_dyn_buf(dyn_buf, &buf);
+
+ avio_wb32(s->pb, MKBETAG('A', 'P', 'I', 'C'));
+ if (id3->version == 3)
+ avio_wb32(s->pb, len);
+ else
+ id3v2_put_size(s->pb, len);
+ avio_wb16(s->pb, 0);
+ avio_write(s->pb, buf, len);
+ av_freep(&buf);
+
+ id3->len += len + ID3v2_HEADER_SIZE;
+
+ return 0;
+}
+
+void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb)
+{
+ int64_t cur_pos = avio_tell(pb);
+ avio_seek(pb, id3->size_pos, SEEK_SET);
+ id3v2_put_size(pb, id3->len);
+ avio_seek(pb, cur_pos, SEEK_SET);
+}
+
+int ff_id3v2_write_simple(struct AVFormatContext *s, int id3v2_version,
+ const char *magic)
+{
+ ID3v2EncContext id3 = { 0 };
+ int ret;
+
+ ff_id3v2_start(&id3, s->pb, id3v2_version, magic);
+ if ((ret = ff_id3v2_write_metadata(s, &id3)) < 0)
+ return ret;
+ ff_id3v2_finish(&id3, s->pb);
+
return 0;
}
projects / ffmpeg / blobdiff