smoothstreamingenc.c File Reference

#include "config.h"
#include <float.h>
#include "avformat.h"
#include "internal.h"
#include "os_support.h"
#include "avc.h"
#include "url.h"
#include "isom.h"
#include "libavutil/opt.h"
#include "libavutil/avstring.h"
#include "libavutil/mathematics.h"
#include "libavutil/intreadwrite.h"

Go to the source code of this file.

Data Structures
struct	Fragment
struct	OutputStream
struct	SmoothStreamingContext

Macros
#define	OFFSET(x)   offsetof(SmoothStreamingContext, x)
#define	E   AV_OPT_FLAG_ENCODING_PARAM

Functions
static int	ism_write (void *opaque, uint8_t *buf, int buf_size)
static int64_t	ism_seek (void *opaque, int64_t offset, int whence)
static void	get_private_data (OutputStream *os)
static void	ism_free (AVFormatContext *s)
static void	output_chunk_list (OutputStream *os, AVIOContext *out, int final, int skip, int window_size)
static int	write_manifest (AVFormatContext *s, int final)
static int	ism_write_header (AVFormatContext *s)
static int	parse_fragment (AVFormatContext *s, const char *filename, int64_t *start_ts, int64_t *duration, int64_t *moof_size, int64_t size)
static int	add_fragment (OutputStream *os, const char *file, const char *infofile, int64_t start_time, int64_t duration, int64_t start_pos, int64_t size)
static int	copy_moof (AVFormatContext *s, const char *infile, const char *outfile, int64_t size)
static int	ism_flush (AVFormatContext *s, int final)
static int	ism_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	ism_write_trailer (AVFormatContext *s)

Variables
static const AVOption	options []
static const AVClass	ism_class
AVOutputFormat	ff_smoothstreaming_muxer

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(SmoothStreamingContext, x)

Definition at line 612 of file smoothstreamingenc.c.

#define E   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 613 of file smoothstreamingenc.c.

Function Documentation

static int ism_write ( void *  opaque, uint8_t *  buf, int  buf_size  )

static

Definition at line 80 of file smoothstreamingenc.c.

Referenced by ism_write_header().

static int64_t ism_seek ( void *  opaque, int64_t  offset, int  whence  )

static

Definition at line 93 of file smoothstreamingenc.c.

Referenced by ism_write_header().

static void get_private_data ( OutputStream *  os )

static

Definition at line 143 of file smoothstreamingenc.c.

Referenced by ism_write_header().

static void ism_free ( AVFormatContext *  s )

static

Definition at line 163 of file smoothstreamingenc.c.

Referenced by ism_write_header(), and ism_write_trailer().

static void output_chunk_list ( OutputStream *  os, AVIOContext *  out, int  final, int  skip, int  window_size  )

static

Definition at line 189 of file smoothstreamingenc.c.

Referenced by write_manifest().

static int write_manifest ( AVFormatContext *  s, int  final  )

static

Definition at line 209 of file smoothstreamingenc.c.

Referenced by ism_flush(), and ism_write_header().

static int ism_write_header ( AVFormatContext *  s )

static

Definition at line 286 of file smoothstreamingenc.c.

static int parse_fragment ( AVFormatContext *  s, const char *  filename, int64_t *  start_ts, int64_t *  duration, int64_t *  moof_size, int64_t  size  )

static

Definition at line 404 of file smoothstreamingenc.c.

Referenced by ism_flush().

static int add_fragment ( OutputStream *  os, const char *  file, const char *  infofile, int64_t  start_time, int64_t  duration, int64_t  start_pos, int64_t  size  )

static

Definition at line 454 of file smoothstreamingenc.c.

Referenced by ism_flush().

static int copy_moof ( AVFormatContext *  s, const char *  infile, const char *  outfile, int64_t  size  )

static

Definition at line 482 of file smoothstreamingenc.c.

Referenced by ism_flush().

static int ism_flush ( AVFormatContext *  s, int  final  )

static

Definition at line 509 of file smoothstreamingenc.c.

Referenced by ism_write_packet(), and ism_write_trailer().

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

static

Definition at line 571 of file smoothstreamingenc.c.

static int ism_write_trailer ( AVFormatContext *  s )

static

Definition at line 596 of file smoothstreamingenc.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "window_size", "number of fragments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
    { "extra_window_size", "number of fragments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
    { "lookahead_count", "number of lookahead fragments", OFFSET(lookahead_count), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, INT_MAX, E },
    { "min_frag_duration", "minimum fragment duration (in microseconds)", OFFSET(min_frag_duration), AV_OPT_TYPE_INT64, { .i64 = 5000000 }, 0, INT_MAX, E },
    { "remove_at_exit", "remove all fragments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E },
    { NULL },
}

Definition at line 614 of file smoothstreamingenc.c.

const AVClass ism_class

static

Initial value:

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

Definition at line 623 of file smoothstreamingenc.c.

AVOutputFormat ff_smoothstreaming_muxer

Initial value:

= {
    .name           = "smoothstreaming",
    .long_name      = NULL_IF_CONFIG_SMALL("Smooth Streaming Muxer"),
    .priv_data_size = sizeof(SmoothStreamingContext),
    .audio_codec    = AV_CODEC_ID_AAC,
    .video_codec    = AV_CODEC_ID_H264,
    .flags          = AVFMT_GLOBALHEADER | AVFMT_NOFILE,
    .write_header   = ism_write_header,
    .write_packet   = ism_write_packet,
    .write_trailer  = ism_write_trailer,
    .codec_tag      = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
    .priv_class     = &ism_class,
}

Definition at line 631 of file smoothstreamingenc.c.