mp3enc.c File Reference

#include "avformat.h"
#include "avio_internal.h"
#include "id3v1.h"
#include "id3v2.h"
#include "mux.h"
#include "rawenc.h"
#include "libavutil/avstring.h"
#include "libavutil/mem.h"
#include "libavcodec/mpegaudio.h"
#include "libavcodec/mpegaudiodata.h"
#include "libavcodec/mpegaudiodecheader.h"
#include "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.
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
const FFOutputFormat	ff_mp3_muxer

Macro Definition Documentation

XING_NUM_BAGS

#define XING_NUM_BAGS   400

Definition at line 95 of file mp3enc.c.

Referenced by mp3_xing_add_frame().

XING_TOC_SIZE

#define XING_TOC_SIZE   100

Definition at line 96 of file mp3enc.c.

Referenced by mp3_update_xing(), and mp3_write_xing().

XING_SIZE

#define XING_SIZE   156

Definition at line 98 of file mp3enc.c.

Referenced by mp3_update_xing(), and mp3_write_xing().

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 42 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 52 of file mp3enc.c.

Referenced by mp3_write_trailer().

mp3_write_xing()

static int mp3_write_xing ( AVFormatContext * s )

static

Definition at line 145 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 292 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 318 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 384 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 402 of file mp3enc.c.

Referenced by mp3_write_trailer().

mp3_write_trailer()

static int mp3_write_trailer ( struct AVFormatContext * s )

static

Definition at line 477 of file mp3enc.c.

query_codec()

static int query_codec ( enum AVCodecID id, int std_compliance )

static

Definition at line 499 of file mp3enc.c.

mp3_write_packet()

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

static

Definition at line 531 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 576 of file mp3enc.c.

mp3_write_header()

static int mp3_write_header ( struct AVFormatContext * s )

static

Definition at line 621 of file mp3enc.c.

mp3_deinit()

static void mp3_deinit ( struct AVFormatContext * s )

static

Definition at line 642 of file mp3enc.c.

Variable Documentation

xing_offtbl

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

static

Definition at line 140 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 514 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 524 of file mp3enc.c.

ff_mp3_muxer

const FFOutputFormat ff_mp3_muxer

Initial value:

= {
    .p.name            = "mp3",
    .p.long_name       = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
    .p.mime_type       = "audio/mpeg",
    .p.extensions      = "mp3",
    .priv_data_size    = sizeof(MP3Context),
    .p.audio_codec     = AV_CODEC_ID_MP3,
    .p.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,
    .p.flags           = AVFMT_NOTIMESTAMPS,
    .p.priv_class      = &mp3_muxer_class,
}

Definition at line 650 of file mp3enc.c.