MBMS_RT::HlsMediaPlaylist Class Reference

#include <HlsMediaPlaylist.h>

Collaboration diagram for MBMS_RT::HlsMediaPlaylist:

Classes
struct	Segment

Public Member Functions
	HlsMediaPlaylist (const std::string &content)
	HlsMediaPlaylist ()=default
	~HlsMediaPlaylist ()=default
const std::vector< Segment > &	segments () const
void	add_segment (Segment segment)
std::string	to_string () const
void	set_target_duration (int duration)
int	target_duration () const

Private Attributes
int	_version = -1
int	_targetduration
std::vector< Segment >	_segments = {}

Detailed Description

Definition at line 24 of file HlsMediaPlaylist.h.

Constructor & Destructor Documentation

HlsMediaPlaylist() [1/2]

MBMS_RT::HlsMediaPlaylist::HlsMediaPlaylist

(

const std::string &

content

)

Definition at line 24 of file HlsMediaPlaylist.cpp.

{
  spdlog::debug("Parsing HLS media playlist: {}", content);
 
  std::istringstream iss(content);
  int idx = 0;
  int seq_nr = 0;
  double extinf = -1;
  for (std::string line; std::getline(iss, line); idx++ )
  {
    boost::algorithm::trim(line);
 
    if (idx==0) {
      if ( line != "#EXTM3U") {
        throw("HLS playlist parsing failed: first line is not #EXTM3U");
      } else {
        continue;
      }
    }
 
    size_t cpos = line.rfind(':');
 
    if (line.rfind("#EXT-X-VERSION", 0) == 0) {
      if (_version != -1) {
        throw("HLS playlist parsing failed: duplicate #EXT-X-VERSION");
      }
      if (cpos != std::string::npos) {
        _version = atoi(line.substr(cpos+1).c_str());
      }
    } else if (line.rfind("#EXT-X-TARGETDURATION", 0) == 0) {
      if (cpos != std::string::npos) {
        _targetduration = atoi(line.substr(cpos+1).c_str());
      }
    } else if (line.rfind("#EXT-X-MEDIA-SEQUENCE", 0) == 0) {
      if (cpos != std::string::npos) {
        seq_nr = atoi(line.substr(cpos+1).c_str());
      }
    } else if (line.rfind("#EXTINF", 0) == 0) {
      if (cpos != std::string::npos) {
        extinf = atof(line.substr(cpos+1).c_str());
      }
    } else if (line.rfind('#', 0) == 0) {
        spdlog::debug("HLS playlist parser ignoring unhandled line {}", line);
    } else if (line.size() > 0) {
        _segments.push_back({line, seq_nr++, extinf});
    }
  }
}

HlsMediaPlaylist() [2/2]

MBMS_RT::HlsMediaPlaylist::HlsMediaPlaylist ( )

default

~HlsMediaPlaylist()

MBMS_RT::HlsMediaPlaylist::~HlsMediaPlaylist ( )

default

Member Function Documentation

add_segment()

void MBMS_RT::HlsMediaPlaylist::add_segment ( Segment  segment )

inline

Definition at line 36 of file HlsMediaPlaylist.h.

{ _segments.push_back(std::move(segment)); };

segments()

const std::vector<Segment>& MBMS_RT::HlsMediaPlaylist::segments ( ) const

inline

Definition at line 35 of file HlsMediaPlaylist.h.

{ return _segments; };

set_target_duration()

void MBMS_RT::HlsMediaPlaylist::set_target_duration ( int  duration )

inline

Definition at line 40 of file HlsMediaPlaylist.h.

{ _targetduration = duration; };

target_duration()

int MBMS_RT::HlsMediaPlaylist::target_duration ( ) const

inline

Definition at line 41 of file HlsMediaPlaylist.h.

{ return _targetduration; };

to_string()

auto MBMS_RT::HlsMediaPlaylist::to_string

(

)

const

Definition at line 74 of file HlsMediaPlaylist.cpp.

{
  std::stringstream pl;
 
  pl << "#EXTM3U" << std::endl;
  pl << "#EXT-X-VERSION:3" << std::endl;
 
  if (_segments.size() > 0) {
    pl << "#EXT-X-TARGETDURATION:" << _targetduration << std::endl;
    pl << "#EXT-X-MEDIA-SEQUENCE:" << _segments[0].seq << std::endl;
  }
  for (const auto& seg : _segments) {
    pl << "#EXTINF:" << seg.extinf << std::endl;
    pl << "/" << seg.uri << std::endl;
  }
  return std::move(pl.str());
}

Member Data Documentation

_segments

std::vector<Segment> MBMS_RT::HlsMediaPlaylist::_segments = {}

private

Definition at line 46 of file HlsMediaPlaylist.h.

_targetduration

int MBMS_RT::HlsMediaPlaylist::_targetduration

private

Definition at line 45 of file HlsMediaPlaylist.h.

_version

int MBMS_RT::HlsMediaPlaylist::_version = -1

private

Definition at line 44 of file HlsMediaPlaylist.h.

---

The documentation for this class was generated from the following files:

• src/HlsMediaPlaylist.h
• src/HlsMediaPlaylist.cpp