From 7541118286470038b97edd0070f3712d98397065 Mon Sep 17 00:00:00 2001 From: Patrick Dehne Date: Thu, 11 Jun 2009 15:26:57 +0000 Subject: [PATCH] Move id3v2 parsing code from mp3.c to id3v2.h and id3v2.c. patch by Patrick Dehne, patrick mysonicweb com Originally committed as revision 19155 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/Makefile | 2 +- libavformat/id3v1.c | 151 ++++++++++++++++++++++++++ libavformat/id3v1.h | 35 +++++++ libavformat/id3v2.c | 147 ++++++++++++++++++++++++++ libavformat/id3v2.h | 7 ++ libavformat/mp3.c | 291 +-------------------------------------------------- 6 files changed, 345 insertions(+), 288 deletions(-) create mode 100644 libavformat/id3v1.c create mode 100644 libavformat/id3v1.h diff --git a/libavformat/Makefile b/libavformat/Makefile index c1343bf..faa43b6 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -96,7 +96,7 @@ OBJS-$(CONFIG_MMF_MUXER) += mmf.o riff.o OBJS-$(CONFIG_MOV_DEMUXER) += mov.o riff.o isom.o OBJS-$(CONFIG_MOV_MUXER) += movenc.o riff.o isom.o avc.o OBJS-$(CONFIG_MP2_MUXER) += mp3.o -OBJS-$(CONFIG_MP3_DEMUXER) += mp3.o id3v2.o +OBJS-$(CONFIG_MP3_DEMUXER) += mp3.o id3v1.o id3v2.o OBJS-$(CONFIG_MP3_MUXER) += mp3.o OBJS-$(CONFIG_MP4_MUXER) += movenc.o riff.o isom.o avc.o OBJS-$(CONFIG_MPC_DEMUXER) += mpc.o id3v2.o diff --git a/libavformat/id3v1.c b/libavformat/id3v1.c new file mode 100644 index 0000000..74c6ad2 --- /dev/null +++ b/libavformat/id3v1.c @@ -0,0 +1,151 @@ +/* + * ID3v1 header parser + * Copyright (c) 2003 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 "id3v1.h" + +const char *ff_id3v1_genre_str[ID3v1_GENRE_MAX + 1] = { + [0] = "Blues", + [1] = "Classic Rock", + [2] = "Country", + [3] = "Dance", + [4] = "Disco", + [5] = "Funk", + [6] = "Grunge", + [7] = "Hip-Hop", + [8] = "Jazz", + [9] = "Metal", + [10] = "New Age", + [11] = "Oldies", + [12] = "Other", + [13] = "Pop", + [14] = "R&B", + [15] = "Rap", + [16] = "Reggae", + [17] = "Rock", + [18] = "Techno", + [19] = "Industrial", + [20] = "Alternative", + [21] = "Ska", + [22] = "Death Metal", + [23] = "Pranks", + [24] = "Soundtrack", + [25] = "Euro-Techno", + [26] = "Ambient", + [27] = "Trip-Hop", + [28] = "Vocal", + [29] = "Jazz+Funk", + [30] = "Fusion", + [31] = "Trance", + [32] = "Classical", + [33] = "Instrumental", + [34] = "Acid", + [35] = "House", + [36] = "Game", + [37] = "Sound Clip", + [38] = "Gospel", + [39] = "Noise", + [40] = "AlternRock", + [41] = "Bass", + [42] = "Soul", + [43] = "Punk", + [44] = "Space", + [45] = "Meditative", + [46] = "Instrumental Pop", + [47] = "Instrumental Rock", + [48] = "Ethnic", + [49] = "Gothic", + [50] = "Darkwave", + [51] = "Techno-Industrial", + [52] = "Electronic", + [53] = "Pop-Folk", + [54] = "Eurodance", + [55] = "Dream", + [56] = "Southern Rock", + [57] = "Comedy", + [58] = "Cult", + [59] = "Gangsta", + [60] = "Top 40", + [61] = "Christian Rap", + [62] = "Pop/Funk", + [63] = "Jungle", + [64] = "Native American", + [65] = "Cabaret", + [66] = "New Wave", + [67] = "Psychadelic", + [68] = "Rave", + [69] = "Showtunes", + [70] = "Trailer", + [71] = "Lo-Fi", + [72] = "Tribal", + [73] = "Acid Punk", + [74] = "Acid Jazz", + [75] = "Polka", + [76] = "Retro", + [77] = "Musical", + [78] = "Rock & Roll", + [79] = "Hard Rock", + [80] = "Folk", + [81] = "Folk-Rock", + [82] = "National Folk", + [83] = "Swing", + [84] = "Fast Fusion", + [85] = "Bebob", + [86] = "Latin", + [87] = "Revival", + [88] = "Celtic", + [89] = "Bluegrass", + [90] = "Avantgarde", + [91] = "Gothic Rock", + [92] = "Progressive Rock", + [93] = "Psychedelic Rock", + [94] = "Symphonic Rock", + [95] = "Slow Rock", + [96] = "Big Band", + [97] = "Chorus", + [98] = "Easy Listening", + [99] = "Acoustic", + [100] = "Humour", + [101] = "Speech", + [102] = "Chanson", + [103] = "Opera", + [104] = "Chamber Music", + [105] = "Sonata", + [106] = "Symphony", + [107] = "Booty Bass", + [108] = "Primus", + [109] = "Porn Groove", + [110] = "Satire", + [111] = "Slow Jam", + [112] = "Club", + [113] = "Tango", + [114] = "Samba", + [115] = "Folklore", + [116] = "Ballad", + [117] = "Power Ballad", + [118] = "Rhythmic Soul", + [119] = "Freestyle", + [120] = "Duet", + [121] = "Punk Rock", + [122] = "Drum Solo", + [123] = "A capella", + [124] = "Euro-House", + [125] = "Dance Hall", +}; diff --git a/libavformat/id3v1.h b/libavformat/id3v1.h new file mode 100644 index 0000000..02333a1 --- /dev/null +++ b/libavformat/id3v1.h @@ -0,0 +1,35 @@ +/* + * ID3v1 header parser + * Copyright (c) 2003 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 + */ + +#ifndef AVFORMAT_ID3V1_H +#define AVFORMAT_ID3V1_H + +#define ID3v1_TAG_SIZE 128 + +#define ID3v1_GENRE_MAX 125 + +/** + * ID3v1 genres + */ +extern const char *ff_id3v1_genre_str[ID3v1_GENRE_MAX + 1]; + +#endif /* AVFORMAT_ID3V1_H */ + diff --git a/libavformat/id3v2.c b/libavformat/id3v2.c index 018fd51..a0581e6 100644 --- a/libavformat/id3v2.c +++ b/libavformat/id3v2.c @@ -20,6 +20,8 @@ */ #include "id3v2.h" +#include "id3v1.h" +#include "libavutil/avstring.h" int ff_id3v2_match(const uint8_t *buf) { @@ -45,3 +47,148 @@ int ff_id3v2_tag_len(const uint8_t * buf) len += ID3v2_HEADER_SIZE; return len; } + +static unsigned int get_size(ByteIOContext *s, int len) +{ + int v=0; + while(len--) + v= (v<<7) + (get_byte(s)&0x7F); + return v; +} + +static void read_ttag(AVFormatContext *s, int taglen, const char *key) +{ + char *q, dst[512]; + int len, dstlen = sizeof(dst) - 1; + unsigned genre; + + dst[0]= 0; + if(taglen < 1) + return; + + taglen--; /* account for encoding type byte */ + + switch(get_byte(s->pb)) { /* encoding type */ + + case 0: /* ISO-8859-1 (0 - 255 maps directly into unicode) */ + q = dst; + while(taglen--) { + uint8_t tmp; + PUT_UTF8(get_byte(s->pb), tmp, if (q - dst < dstlen - 1) *q++ = tmp;) + } + *q = '\0'; + break; + + case 3: /* UTF-8 */ + len = FFMIN(taglen, dstlen-1); + get_buffer(s->pb, dst, len); + dst[len] = 0; + break; + } + + if (!strcmp(key, "genre") + && (sscanf(dst, "(%d)", &genre) == 1 || sscanf(dst, "%d", &genre) == 1) + && genre <= ID3v1_GENRE_MAX) + av_strlcpy(dst, ff_id3v1_genre_str[genre], sizeof(dst)); + + if (*dst) + av_metadata_set(&s->metadata, key, dst); +} + +void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags) +{ + int isv34, tlen; + uint32_t tag; + int64_t next; + int taghdrlen; + const char *reason; + + switch(version) { + case 2: + if(flags & 0x40) { + reason = "compression"; + goto error; + } + isv34 = 0; + taghdrlen = 6; + break; + + case 3: + case 4: + isv34 = 1; + taghdrlen = 10; + break; + + default: + reason = "version"; + goto error; + } + + if(flags & 0x80) { + reason = "unsynchronization"; + goto error; + } + + if(isv34 && flags & 0x40) /* Extended header present, just skip over it */ + url_fskip(s->pb, get_size(s->pb, 4)); + + while(len >= taghdrlen) { + if(isv34) { + tag = get_be32(s->pb); + tlen = get_size(s->pb, 4); + get_be16(s->pb); /* flags */ + } else { + tag = get_be24(s->pb); + tlen = get_size(s->pb, 3); + } + len -= taghdrlen + tlen; + + if(len < 0) + break; + + next = url_ftell(s->pb) + tlen; + + switch(tag) { + case MKBETAG('T', 'I', 'T', '2'): + case MKBETAG(0, 'T', 'T', '2'): + read_ttag(s, tlen, "title"); + break; + case MKBETAG('T', 'P', 'E', '1'): + case MKBETAG(0, 'T', 'P', '1'): + read_ttag(s, tlen, "author"); + break; + case MKBETAG('T', 'A', 'L', 'B'): + case MKBETAG(0, 'T', 'A', 'L'): + read_ttag(s, tlen, "album"); + break; + case MKBETAG('T', 'C', 'O', 'N'): + case MKBETAG(0, 'T', 'C', 'O'): + read_ttag(s, tlen, "genre"); + break; + case MKBETAG('T', 'C', 'O', 'P'): + case MKBETAG(0, 'T', 'C', 'R'): + read_ttag(s, tlen, "copyright"); + break; + case MKBETAG('T', 'R', 'C', 'K'): + case MKBETAG(0, 'T', 'R', 'K'): + read_ttag(s, tlen, "track"); + break; + case 0: + /* padding, skip to end */ + url_fskip(s->pb, len); + len = 0; + continue; + } + /* Skip to end of tag */ + url_fseek(s->pb, next, SEEK_SET); + } + + if(version == 4 && flags & 0x10) /* Footer preset, always 10 bytes, skip over it */ + url_fskip(s->pb, 10); + return; + + error: + av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n", version, reason); + url_fskip(s->pb, len); +} + diff --git a/libavformat/id3v2.h b/libavformat/id3v2.h index 6d62f11..f7b8627 100644 --- a/libavformat/id3v2.h +++ b/libavformat/id3v2.h @@ -23,6 +23,7 @@ #define AVFORMAT_ID3V2_H #include +#include "avformat.h" #define ID3v2_HEADER_SIZE 10 @@ -39,4 +40,10 @@ int ff_id3v2_match(const uint8_t *buf); */ int ff_id3v2_tag_len(const uint8_t *buf); +/** + * ID3v2 parser + * Handles ID3v2.2, 2.3 and 2.4. + */ +void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags); + #endif /* AVFORMAT_ID3V2_H */ diff --git a/libavformat/mp3.c b/libavformat/mp3.c index e835a34..691d496 100644 --- a/libavformat/mp3.c +++ b/libavformat/mp3.c @@ -25,290 +25,7 @@ #include "libavcodec/mpegaudiodecheader.h" #include "avformat.h" #include "id3v2.h" - -#define ID3v1_TAG_SIZE 128 - -#define ID3v1_GENRE_MAX 125 - -static const char * const id3v1_genre_str[ID3v1_GENRE_MAX + 1] = { - [0] = "Blues", - [1] = "Classic Rock", - [2] = "Country", - [3] = "Dance", - [4] = "Disco", - [5] = "Funk", - [6] = "Grunge", - [7] = "Hip-Hop", - [8] = "Jazz", - [9] = "Metal", - [10] = "New Age", - [11] = "Oldies", - [12] = "Other", - [13] = "Pop", - [14] = "R&B", - [15] = "Rap", - [16] = "Reggae", - [17] = "Rock", - [18] = "Techno", - [19] = "Industrial", - [20] = "Alternative", - [21] = "Ska", - [22] = "Death Metal", - [23] = "Pranks", - [24] = "Soundtrack", - [25] = "Euro-Techno", - [26] = "Ambient", - [27] = "Trip-Hop", - [28] = "Vocal", - [29] = "Jazz+Funk", - [30] = "Fusion", - [31] = "Trance", - [32] = "Classical", - [33] = "Instrumental", - [34] = "Acid", - [35] = "House", - [36] = "Game", - [37] = "Sound Clip", - [38] = "Gospel", - [39] = "Noise", - [40] = "AlternRock", - [41] = "Bass", - [42] = "Soul", - [43] = "Punk", - [44] = "Space", - [45] = "Meditative", - [46] = "Instrumental Pop", - [47] = "Instrumental Rock", - [48] = "Ethnic", - [49] = "Gothic", - [50] = "Darkwave", - [51] = "Techno-Industrial", - [52] = "Electronic", - [53] = "Pop-Folk", - [54] = "Eurodance", - [55] = "Dream", - [56] = "Southern Rock", - [57] = "Comedy", - [58] = "Cult", - [59] = "Gangsta", - [60] = "Top 40", - [61] = "Christian Rap", - [62] = "Pop/Funk", - [63] = "Jungle", - [64] = "Native American", - [65] = "Cabaret", - [66] = "New Wave", - [67] = "Psychadelic", - [68] = "Rave", - [69] = "Showtunes", - [70] = "Trailer", - [71] = "Lo-Fi", - [72] = "Tribal", - [73] = "Acid Punk", - [74] = "Acid Jazz", - [75] = "Polka", - [76] = "Retro", - [77] = "Musical", - [78] = "Rock & Roll", - [79] = "Hard Rock", - [80] = "Folk", - [81] = "Folk-Rock", - [82] = "National Folk", - [83] = "Swing", - [84] = "Fast Fusion", - [85] = "Bebob", - [86] = "Latin", - [87] = "Revival", - [88] = "Celtic", - [89] = "Bluegrass", - [90] = "Avantgarde", - [91] = "Gothic Rock", - [92] = "Progressive Rock", - [93] = "Psychedelic Rock", - [94] = "Symphonic Rock", - [95] = "Slow Rock", - [96] = "Big Band", - [97] = "Chorus", - [98] = "Easy Listening", - [99] = "Acoustic", - [100] = "Humour", - [101] = "Speech", - [102] = "Chanson", - [103] = "Opera", - [104] = "Chamber Music", - [105] = "Sonata", - [106] = "Symphony", - [107] = "Booty Bass", - [108] = "Primus", - [109] = "Porn Groove", - [110] = "Satire", - [111] = "Slow Jam", - [112] = "Club", - [113] = "Tango", - [114] = "Samba", - [115] = "Folklore", - [116] = "Ballad", - [117] = "Power Ballad", - [118] = "Rhythmic Soul", - [119] = "Freestyle", - [120] = "Duet", - [121] = "Punk Rock", - [122] = "Drum Solo", - [123] = "A capella", - [124] = "Euro-House", - [125] = "Dance Hall", -}; - -static unsigned int id3v2_get_size(ByteIOContext *s, int len) -{ - int v=0; - while(len--) - v= (v<<7) + (get_byte(s)&0x7F); - return v; -} - -static void id3v2_read_ttag(AVFormatContext *s, int taglen, const char *key) -{ - char *q, dst[512]; - int len, dstlen = sizeof(dst) - 1; - unsigned genre; - - dst[0]= 0; - if(taglen < 1) - return; - - taglen--; /* account for encoding type byte */ - - switch(get_byte(s->pb)) { /* encoding type */ - - case 0: /* ISO-8859-1 (0 - 255 maps directly into unicode) */ - q = dst; - while(taglen--) { - uint8_t tmp; - PUT_UTF8(get_byte(s->pb), tmp, if (q - dst < dstlen - 1) *q++ = tmp;) - } - *q = '\0'; - break; - - case 3: /* UTF-8 */ - len = FFMIN(taglen, dstlen-1); - get_buffer(s->pb, dst, len); - dst[len] = 0; - break; - } - - if (!strcmp(key, "genre") - && (sscanf(dst, "(%d)", &genre) == 1 || sscanf(dst, "%d", &genre) == 1) - && genre <= ID3v1_GENRE_MAX) - av_strlcpy(dst, id3v1_genre_str[genre], sizeof(dst)); - - if (*dst) - av_metadata_set(&s->metadata, key, dst); -} - -/** - * ID3v2 parser - * - * Handles ID3v2.2, 2.3 and 2.4. - * - */ - -static void id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags) -{ - int isv34, tlen; - uint32_t tag; - int64_t next; - int taghdrlen; - const char *reason; - - switch(version) { - case 2: - if(flags & 0x40) { - reason = "compression"; - goto error; - } - isv34 = 0; - taghdrlen = 6; - break; - - case 3: - case 4: - isv34 = 1; - taghdrlen = 10; - break; - - default: - reason = "version"; - goto error; - } - - if(flags & 0x80) { - reason = "unsynchronization"; - goto error; - } - - if(isv34 && flags & 0x40) /* Extended header present, just skip over it */ - url_fskip(s->pb, id3v2_get_size(s->pb, 4)); - - while(len >= taghdrlen) { - if(isv34) { - tag = get_be32(s->pb); - tlen = id3v2_get_size(s->pb, 4); - get_be16(s->pb); /* flags */ - } else { - tag = get_be24(s->pb); - tlen = id3v2_get_size(s->pb, 3); - } - len -= taghdrlen + tlen; - - if(len < 0) - break; - - next = url_ftell(s->pb) + tlen; - - switch(tag) { - case MKBETAG('T', 'I', 'T', '2'): - case MKBETAG(0, 'T', 'T', '2'): - id3v2_read_ttag(s, tlen, "title"); - break; - case MKBETAG('T', 'P', 'E', '1'): - case MKBETAG(0, 'T', 'P', '1'): - id3v2_read_ttag(s, tlen, "author"); - break; - case MKBETAG('T', 'A', 'L', 'B'): - case MKBETAG(0, 'T', 'A', 'L'): - id3v2_read_ttag(s, tlen, "album"); - break; - case MKBETAG('T', 'C', 'O', 'N'): - case MKBETAG(0, 'T', 'C', 'O'): - id3v2_read_ttag(s, tlen, "genre"); - break; - case MKBETAG('T', 'C', 'O', 'P'): - case MKBETAG(0, 'T', 'C', 'R'): - id3v2_read_ttag(s, tlen, "copyright"); - break; - case MKBETAG('T', 'R', 'C', 'K'): - case MKBETAG(0, 'T', 'R', 'K'): - id3v2_read_ttag(s, tlen, "track"); - break; - case 0: - /* padding, skip to end */ - url_fskip(s->pb, len); - len = 0; - continue; - } - /* Skip to end of tag */ - url_fseek(s->pb, next, SEEK_SET); - } - - if(version == 4 && flags & 0x10) /* Footer preset, always 10 bytes, skip over it */ - url_fskip(s->pb, 10); - return; - - error: - av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n", version, reason); - url_fskip(s->pb, len); -} +#include "id3v1.h" static void id3v1_get_string(AVFormatContext *s, const char *key, const uint8_t *buf, int buf_size) @@ -352,7 +69,7 @@ static int id3v1_parse_tag(AVFormatContext *s, const uint8_t *buf) } genre = buf[127]; if (genre <= ID3v1_GENRE_MAX) - av_metadata_set(&s->metadata, "genre", id3v1_genre_str[genre]); + av_metadata_set(&s->metadata, "genre", ff_id3v1_genre_str[genre]); return 0; } @@ -492,7 +209,7 @@ static int mp3_read_header(AVFormatContext *s, ((buf[7] & 0x7f) << 14) | ((buf[8] & 0x7f) << 7) | (buf[9] & 0x7f); - id3v2_parse(s, len, buf[3], buf[5]); + ff_id3v2_parse(s, len, buf[3], buf[5]); } else { url_fseek(s->pb, 0, SEEK_SET); } @@ -557,7 +274,7 @@ static int id3v1_create_tag(AVFormatContext *s, uint8_t *buf) } if ((tag = av_metadata_get(s->metadata, "genre", NULL, 0))) { for(i = 0; i <= ID3v1_GENRE_MAX; i++) { - if (!strcasecmp(tag->value, id3v1_genre_str[i])) { + if (!strcasecmp(tag->value, ff_id3v1_genre_str[i])) { buf[127] = i; count++; break; -- 2.7.4