diff options
Diffstat (limited to 'ffmpeg1/libavformat/id3v2enc.c')
| -rw-r--r-- | ffmpeg1/libavformat/id3v2enc.c | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/ffmpeg1/libavformat/id3v2enc.c b/ffmpeg1/libavformat/id3v2enc.c deleted file mode 100644 index a10d679..0000000 --- a/ffmpeg1/libavformat/id3v2enc.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - * ID3v2 header writer - * - * 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 <stdint.h> -#include <string.h> - -#include "libavutil/avstring.h" -#include "libavutil/dict.h" -#include "libavutil/intreadwrite.h" -#include "avformat.h" -#include "avio.h" -#include "id3v2.h" - -static void id3v2_put_size(AVIOContext *pb, int size) -{ - 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) -{ - while (*str && *str < 128) 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(ID3v2EncContext *id3, AVIOContext *avioc, const char *str1, const char *str2, - uint32_t tag, enum ID3v2Encoding enc) -{ - int len; - uint8_t *pb; - AVIOContext *dyn_buf; - if (avio_open_dyn_buf(&dyn_buf) < 0) - return AVERROR(ENOMEM); - - /* check if the strings are ASCII-only and use UTF16 only if - * they're not */ - if (enc == ID3v2_ENCODING_UTF16BOM && string_is_ascii(str1) && - (!str2 || string_is_ascii(str2))) - enc = ID3v2_ENCODING_ISO8859; - - avio_w8(dyn_buf, enc); - id3v2_encode_string(dyn_buf, str1, enc); - if (str2) - id3v2_encode_string(dyn_buf, str2, enc); - len = avio_close_dyn_buf(dyn_buf, &pb); - - 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(ID3v2EncContext *id3, AVIOContext *pb, AVDictionaryEntry *t, - const char table[][4], enum ID3v2Encoding enc) -{ - uint32_t tag; - int i; - - if (t->key[0] != 'T' || strlen(t->key) != 4) - return -1; - tag = AV_RB32(t->key); - for (i = 0; *table[i]; i++) - if (tag == AV_RB32(table[i])) - return id3v2_put_ttag(id3, pb, t->value, NULL, tag, enc); - return -1; -} - -static void id3v2_3_metadata_split_date(AVDictionary **pm) -{ - AVDictionaryEntry *mtag = NULL; - AVDictionary *dst = NULL; - const char *key, *value; - char year[5] = {0}, day_month[5] = {0}; - int i; - - while ((mtag = av_dict_get(*pm, "", mtag, AV_DICT_IGNORE_SUFFIX))) { - key = mtag->key; - if (!av_strcasecmp(key, "date")) { - /* split date tag using "YYYY-MM-DD" format into year and month/day segments */ - value = mtag->value; - i = 0; - while (value[i] >= '0' && value[i] <= '9') i++; - if (value[i] == '\0' || value[i] == '-') { - av_strlcpy(year, value, sizeof(year)); - av_dict_set(&dst, "TYER", year, 0); - - if (value[i] == '-' && - value[i+1] >= '0' && value[i+1] <= '1' && - value[i+2] >= '0' && value[i+2] <= '9' && - value[i+3] == '-' && - value[i+4] >= '0' && value[i+4] <= '3' && - value[i+5] >= '0' && value[i+5] <= '9' && - (value[i+6] == '\0' || value[i+6] == ' ')) { - snprintf(day_month, sizeof(day_month), "%.2s%.2s", value + i + 4, value + i + 1); - av_dict_set(&dst, "TDAT", day_month, 0); - } - } else - av_dict_set(&dst, key, value, 0); - } else - av_dict_set(&dst, key, mtag->value, 0); - } - av_dict_free(pm); - *pm = dst; -} - -void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, - const char *magic) -{ - id3->version = id3v2_version; - - 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 */ - 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 (id3->version == 3) - id3v2_3_metadata_split_date(&s->metadata); - else 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(id3, s->pb, t, ff_id3v2_tags, enc)) > 0) { - id3->len += ret; - continue; - } - if ((ret = id3v2_check_write_tag(id3, s->pb, t, id3->version == 3 ? - ff_id3v2_3_tags : ff_id3v2_4_tags, enc)) > 0) { - id3->len += ret; - continue; - } - - /* unknown tag, write as TXXX frame */ - if ((ret = id3v2_put_ttag(id3, s->pb, t->key, t->value, MKBETAG('T', 'X', 'X', 'X'), enc)) < 0) - return 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); - } - - /* 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; -} |