mp3.c File Reference

Go to the source code of this file.

Functions
static int	id3v2_match (const uint8_t *buf)
static unsigned int	id3v2_get_size (ByteIOContext *s, int len)
static void	id3v2_read_ttag (AVFormatContext *s, int taglen, char *dst, int dstlen)
static void	id3v2_parse (AVFormatContext *s, int len, uint8_t version, uint8_t flags)
	ID3v2 parser.
static void	id3v1_get_string (char *str, int str_size, const uint8_t *buf, int buf_size)
static int	id3v1_parse_tag (AVFormatContext *s, const uint8_t *buf)
static void	id3v1_create_tag (AVFormatContext *s, uint8_t *buf)
static int	mp3_read_probe (AVProbeData *p)
static void	mp3_parse_vbr_tags (AVFormatContext *s, AVStream *st, offset_t base)
	Try to find Xing/Info/VBRI tags and compute duration from info therein.
static int	mp3_read_header (AVFormatContext *s, AVFormatParameters *ap)
static int	mp3_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	mp3_read_close (AVFormatContext *s)
static void	id3v2_put_size (AVFormatContext *s, int size)
static void	id3v2_put_ttag (AVFormatContext *s, char *string, uint32_t tag)
static int	mp3_write_header (struct AVFormatContext *s)
	Write an ID3v2.4 header at beginning of stream.
static int	mp3_write_packet (struct AVFormatContext *s, AVPacket *pkt)
static int	mp3_write_trailer (struct AVFormatContext *s)
Variables
static const char *	id3v1_genre_str [ID3v1_GENRE_MAX+1]
AVInputFormat	mp3_demuxer
AVOutputFormat	mp2_muxer
AVOutputFormat	mp3_muxer

---

Function Documentation

static int id3v2_match

(

const uint8_t *

buf

)

[static]

Definition at line 161 of file mp3.c.

Referenced by mp3_read_header(), and mp3_read_probe().

static unsigned int id3v2_get_size	(	ByteIOContext *	s,
		int	len
	)			[static]

Definition at line 174 of file mp3.c.

Referenced by id3v2_parse().

static void id3v2_read_ttag	(	AVFormatContext *	s,
		int	taglen,
		char *	dst,
		int	dstlen
	)			[static]

Definition at line 182 of file mp3.c.

Referenced by id3v2_parse().

static void id3v2_parse	(	AVFormatContext *	s,
		int	len,
		uint8_t	version,
		uint8_t	flags
	)			[static]

ID3v2 parser.

Handles ID3v2.2, 2.3 and 2.4.

Definition at line 219 of file mp3.c.

Referenced by mp3_read_header().

static void id3v1_get_string	(	char *	str,
		int	str_size,
		const uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 318 of file mp3.c.

Referenced by id3v1_parse_tag().

static int id3v1_parse_tag	(	AVFormatContext *	s,
		const uint8_t *	buf
	)			[static]

Definition at line 337 of file mp3.c.

Referenced by mp3_read_header().

static void id3v1_create_tag	(	AVFormatContext *	s,
		uint8_t *	buf
	)			[static]

Definition at line 360 of file mp3.c.

Referenced by mp3_write_trailer().

static int mp3_read_probe

(

AVProbeData *

p

)

[static]

Definition at line 393 of file mp3.c.

static void mp3_parse_vbr_tags	(	AVFormatContext *	s,
		AVStream *	st,
		offset_t	base
	)			[static]

Try to find Xing/Info/VBRI tags and compute duration from info therein.

Definition at line 431 of file mp3.c.

Referenced by mp3_read_header().

static int mp3_read_header	(	AVFormatContext *	s,
		AVFormatParameters *	ap
	)			[static]

Definition at line 475 of file mp3.c.

static int mp3_read_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 531 of file mp3.c.

static int mp3_read_close

(

AVFormatContext *

s

)

[static]

Definition at line 550 of file mp3.c.

static void id3v2_put_size	(	AVFormatContext *	s,
		int	size
	)			[static]

Definition at line 558 of file mp3.c.

Referenced by id3v2_put_ttag(), and mp3_write_header().

static void id3v2_put_ttag	(	AVFormatContext *	s,
		char *	string,
		uint32_t	tag
	)			[static]

Definition at line 566 of file mp3.c.

Referenced by mp3_write_header().

static int mp3_write_header

(

struct AVFormatContext *

s

)

[static]

Write an ID3v2.4 header at beginning of stream.

Definition at line 581 of file mp3.c.

static int mp3_write_packet	(	struct AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 623 of file mp3.c.

static int mp3_write_trailer

(

struct AVFormatContext *

s

)

[static]

Definition at line 630 of file mp3.c.

---

Variable Documentation

const char* id3v1_genre_str[ID3v1_GENRE_MAX+1] [static]

Definition at line 31 of file mp3.c.

Referenced by id3v1_create_tag(), and id3v1_parse_tag().

AVInputFormat mp3_demuxer

Initial value:

 {
    "mp3",
    "MPEG audio",
    0,
    mp3_read_probe,
    mp3_read_header,
    mp3_read_packet,
    mp3_read_close,
    .flags= AVFMT_GENERIC_INDEX,
    .extensions = "mp2,mp3,m2a", 
}

Definition at line 645 of file mp3.c.

AVOutputFormat mp2_muxer

Initial value:

 {
    "mp2",
    "MPEG audio layer 2",
    "audio/x-mpeg",
#ifdef CONFIG_LIBMP3LAME
    "mp2,m2a",
#else
    "mp2,mp3,m2a",
#endif
    0,
    CODEC_ID_MP2,
    0,
    NULL,
    mp3_write_packet,
    mp3_write_trailer,
}

Definition at line 658 of file mp3.c.

AVOutputFormat mp3_muxer

Initial value:

 {
    "mp3",
    "MPEG audio layer 3",
    "audio/x-mpeg",
    "mp3",
    0,
    CODEC_ID_MP3,
    0,
    mp3_write_header,
    mp3_write_packet,
    mp3_write_trailer,
}

Definition at line 676 of file mp3.c.