webmdashenc.c File Reference

#include <float.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include "avformat.h"
#include "matroska.h"
#include "mux.h"
#include "libavutil/avstring.h"
#include "libavutil/dict.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/time_internal.h"
#include "libavcodec/codec_desc.h"

Go to the source code of this file.

Data Structures
struct	AdaptationSet
struct	WebMDashMuxContext

Macros
#define	OFFSET(x)   offsetof(WebMDashMuxContext, x)

Functions
static const char *	get_codec_name (int codec_id)
static double	get_duration (AVFormatContext *s)
static int	write_header (AVFormatContext *s)
static void	write_footer (AVFormatContext *s)
static int	subsegment_alignment (AVFormatContext *s, const AdaptationSet *as)
static int	bitstream_switching (AVFormatContext *s, const AdaptationSet *as)
static int	write_representation (AVFormatContext *s, AVStream *st, char *id, int output_width, int output_height, int output_sample_rate)
static int	check_matching_width (AVFormatContext *s, const AdaptationSet *as)
static int	check_matching_height (AVFormatContext *s, const AdaptationSet *as)
static int	check_matching_sample_rate (AVFormatContext *s, const AdaptationSet *as)
static void	free_adaptation_sets (AVFormatContext *s)
static int	split_filename (char *filename, char **underscore_pos, char **period_pos)
static int	write_adaptation_set (AVFormatContext *s, int as_index)
static int	parse_adaptation_sets (AVFormatContext *s)
static int	webm_dash_manifest_write_header (AVFormatContext *s)
static int	webm_dash_manifest_write_packet (AVFormatContext *s, AVPacket *pkt)

Variables
static const AVOption	options []
static const AVClass	webm_dash_class
const FFOutputFormat	ff_webm_dash_manifest_muxer

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(WebMDashMuxContext, x)

Definition at line 527 of file webmdashenc.c.

Function Documentation

get_codec_name()

static const char* get_codec_name ( int  codec_id )

static

Definition at line 66 of file webmdashenc.c.

Referenced by write_adaptation_set(), and write_representation().

get_duration()

static double get_duration ( AVFormatContext *  s )

static

Definition at line 71 of file webmdashenc.c.

Referenced by webm_dash_manifest_write_header(), and write_header().

write_header()

static int write_header ( AVFormatContext *  s )

static

Definition at line 84 of file webmdashenc.c.

Referenced by webm_dash_manifest_write_header().

write_footer()

static void write_footer ( AVFormatContext *  s )

static

Definition at line 127 of file webmdashenc.c.

Referenced by webm_dash_manifest_write_header().

subsegment_alignment()

static int subsegment_alignment ( AVFormatContext *  s, const AdaptationSet *  as  )

static

Definition at line 132 of file webmdashenc.c.

Referenced by write_adaptation_set().

bitstream_switching()

static int bitstream_switching ( AVFormatContext *  s, const AdaptationSet *  as  )

static

Definition at line 146 of file webmdashenc.c.

Referenced by write_adaptation_set().

write_representation()

static int write_representation ( AVFormatContext *  s, AVStream *  st, char *  id, int  output_width, int  output_height, int  output_sample_rate  )

static

Definition at line 175 of file webmdashenc.c.

Referenced by write_adaptation_set().

check_matching_width()

static int check_matching_width ( AVFormatContext *  s, const AdaptationSet *  as  )

static

Definition at line 232 of file webmdashenc.c.

Referenced by write_adaptation_set().

check_matching_height()

static int check_matching_height ( AVFormatContext *  s, const AdaptationSet *  as  )

static

Definition at line 246 of file webmdashenc.c.

Referenced by write_adaptation_set().

check_matching_sample_rate()

static int check_matching_sample_rate ( AVFormatContext *  s, const AdaptationSet *  as  )

static

Definition at line 260 of file webmdashenc.c.

Referenced by write_adaptation_set().

free_adaptation_sets()

static void free_adaptation_sets ( AVFormatContext *  s )

static

Definition at line 271 of file webmdashenc.c.

Referenced by webm_dash_manifest_write_header().

split_filename()

static int split_filename ( char *  filename, char **  underscore_pos, char **  period_pos  )

static

Definition at line 291 of file webmdashenc.c.

Referenced by write_adaptation_set().

write_adaptation_set()

static int write_adaptation_set ( AVFormatContext *  s, int  as_index  )

static

Definition at line 306 of file webmdashenc.c.

Referenced by webm_dash_manifest_write_header().

parse_adaptation_sets()

static int parse_adaptation_sets ( AVFormatContext *  s )

static

Definition at line 410 of file webmdashenc.c.

Referenced by webm_dash_manifest_write_header().

webm_dash_manifest_write_header()

static int webm_dash_manifest_write_header ( AVFormatContext *  s )

static

Definition at line 478 of file webmdashenc.c.

webm_dash_manifest_write_packet()

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

static

Definition at line 522 of file webmdashenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "adaptation_sets", "Adaptation sets. Syntax: id=0,streams=0,1,2 id=1,streams=3,4 and so on", OFFSET(adaptation_sets), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
    { "live", "create a live stream manifest", OFFSET(is_live), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
    { "chunk_start_index",  "start index of the chunk", OFFSET(chunk_start_index), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { "chunk_duration_ms", "duration of each chunk (in milliseconds)", OFFSET(chunk_duration), AV_OPT_TYPE_INT, {.i64 = 1000}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { "utc_timing_url", "URL of the page that will return the UTC timestamp in ISO format", OFFSET(utc_timing_url), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
    { "time_shift_buffer_depth", "Smallest time (in seconds) shifting buffer for which any Representation is guaranteed to be available.", OFFSET(time_shift_buffer_depth), AV_OPT_TYPE_DOUBLE, { .dbl = 60.0 }, 1.0, DBL_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { "minimum_update_period", "Minimum Update Period (in seconds) of the manifest.", OFFSET(minimum_update_period), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
    { NULL },
}

Definition at line 528 of file webmdashenc.c.

webm_dash_class

const AVClass webm_dash_class

static

Initial value:

= {
    .class_name = "WebM DASH Manifest muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 539 of file webmdashenc.c.

ff_webm_dash_manifest_muxer

const FFOutputFormat ff_webm_dash_manifest_muxer

Initial value:

= {
    .p.name            = "webm_dash_manifest",
    .p.long_name       = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
    .p.mime_type       = "application/xml",
    .p.extensions      = "xml",
    .priv_data_size    = sizeof(WebMDashMuxContext),
    .write_header      = webm_dash_manifest_write_header,
    .write_packet      = webm_dash_manifest_write_packet,
    .p.priv_class      = &webm_dash_class,
}

Definition at line 546 of file webmdashenc.c.