mp3enc.c File Reference

#include "avformat.h"
#include "avio_internal.h"
#include "id3v1.h"
#include "id3v2.h"
#include "rawenc.h"
#include "libavutil/avstring.h"
#include "libavcodec/mpegaudio.h"
#include "libavcodec/mpegaudiodata.h"
#include "libavcodec/mpegaudiodecheader.h"
#include "libavcodec/packet_internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/avassert.h"
#include "libavutil/crc.h"
#include "libavutil/mathematics.h"
#include "libavutil/replaygain.h"

Go to the source code of this file.

Data Structures
struct	MP3Context

Macros
#define	XING_NUM_BAGS   400
#define	XING_TOC_SIZE   100
#define	XING_SIZE   156

Functions
static int	id3v1_set_string (AVFormatContext *s, const char *key, uint8_t *buf, int buf_size)
static int	id3v1_create_tag (AVFormatContext *s, uint8_t *buf)
static int	mp3_write_xing (AVFormatContext *s)
static void	mp3_xing_add_frame (MP3Context *mp3, AVPacket *pkt)
static int	mp3_write_audio_packet (AVFormatContext *s, AVPacket *pkt)
static int	mp3_queue_flush (AVFormatContext *s)
static void	mp3_update_xing (AVFormatContext *s)
static int	mp3_write_trailer (struct AVFormatContext *s)
static int	query_codec (enum AVCodecID id, int std_compliance)
static int	mp3_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	mp3_init (struct AVFormatContext *s)
	Write an ID3v2 header at beginning of stream. More...
static int	mp3_write_header (struct AVFormatContext *s)
static void	mp3_deinit (struct AVFormatContext *s)

Variables
static const uint8_t	xing_offtbl [2][2] = {{32, 17}, {17, 9}}
static const AVOption	options []
static const AVClass	mp3_muxer_class
AVOutputFormat	ff_mp3_muxer

Macro Definition Documentation

XING_NUM_BAGS

#define XING_NUM_BAGS   400

Definition at line 93 of file mp3enc.c.

XING_TOC_SIZE

#define XING_TOC_SIZE   100

Definition at line 94 of file mp3enc.c.

XING_SIZE

#define XING_SIZE   156

Definition at line 96 of file mp3enc.c.

Function Documentation

id3v1_set_string()

static int id3v1_set_string ( AVFormatContext *  s, const char *  key, uint8_t *  buf, int  buf_size  )

static

Definition at line 40 of file mp3enc.c.

Referenced by id3v1_create_tag().

id3v1_create_tag()

static int id3v1_create_tag ( AVFormatContext *  s, uint8_t *  buf  )

static

Definition at line 50 of file mp3enc.c.

Referenced by mp3_write_trailer().

mp3_write_xing()

static int mp3_write_xing ( AVFormatContext *  s )

static

Definition at line 143 of file mp3enc.c.

Referenced by mp3_queue_flush(), and mp3_write_header().

mp3_xing_add_frame()

static void mp3_xing_add_frame ( MP3Context *  mp3, AVPacket *  pkt  )

static

Definition at line 290 of file mp3enc.c.

Referenced by mp3_write_audio_packet().

mp3_write_audio_packet()

static int mp3_write_audio_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 316 of file mp3enc.c.

Referenced by mp3_queue_flush(), and mp3_write_packet().

mp3_queue_flush()

static int mp3_queue_flush ( AVFormatContext *  s )

static

Definition at line 381 of file mp3enc.c.

Referenced by mp3_write_packet(), and mp3_write_trailer().

mp3_update_xing()

static void mp3_update_xing ( AVFormatContext *  s )

static

Definition at line 399 of file mp3enc.c.

Referenced by mp3_write_trailer().

mp3_write_trailer()

static int mp3_write_trailer ( struct AVFormatContext *  s )

static

Definition at line 470 of file mp3enc.c.

query_codec()

static int query_codec ( enum AVCodecID  id, int  std_compliance  )

static

Definition at line 492 of file mp3enc.c.

mp3_write_packet()

static int mp3_write_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 520 of file mp3enc.c.

mp3_init()

static int mp3_init ( struct AVFormatContext *  s )

static

Write an ID3v2 header at beginning of stream.

Definition at line 565 of file mp3enc.c.

mp3_write_header()

static int mp3_write_header ( struct AVFormatContext *  s )

static

Definition at line 610 of file mp3enc.c.

mp3_deinit()

static void mp3_deinit ( struct AVFormatContext *  s )

static

Definition at line 631 of file mp3enc.c.

Variable Documentation

xing_offtbl

const uint8_t xing_offtbl[2][2] = {{32, 17}, {17, 9}}

static

Definition at line 138 of file mp3enc.c.

Referenced by mp3_parse_info_tag(), mp3_write_audio_packet(), and mp3_write_xing().

options

const AVOption options[]

static

Initial value:

= {
    { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
      0x42, AV_OPT_TYPE_INT, {.i64 = 4}, 0, 4, AV_OPT_FLAG_ENCODING_PARAM},
    { "write_id3v1", "Enable ID3v1 writing. ID3v1 tags are written in UTF-8 which may not be supported by most software.",
      0x42, AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
    { "write_xing",  "Write the Xing header containing file duration.",
      0x42,  AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
    { NULL },
}

Definition at line 503 of file mp3enc.c.

mp3_muxer_class

const AVClass mp3_muxer_class

static

Initial value:

= {
    .class_name     = "MP3 muxer",
    .item_name      = av_default_item_name,
    .option         = options,
    .version        = LIBAVUTIL_VERSION_INT,
}

Definition at line 513 of file mp3enc.c.

ff_mp3_muxer

AVOutputFormat ff_mp3_muxer

Initial value:

= {
    .name              = "mp3",
    .long_name         = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
    .mime_type         = "audio/mpeg",
    .extensions        = "mp3",
    .priv_data_size    = sizeof(MP3Context),
    .audio_codec       = AV_CODEC_ID_MP3,
    .video_codec       = AV_CODEC_ID_PNG,
    .init              = mp3_init,
    .write_header      = mp3_write_header,
    .write_packet      = mp3_write_packet,
    .write_trailer     = mp3_write_trailer,
    .deinit            = mp3_deinit,
    .query_codec       = query_codec,
    .flags             = AVFMT_NOTIMESTAMPS,
    .priv_class        = &mp3_muxer_class,
}

Definition at line 639 of file mp3enc.c.