Common utility functions. More...

#include "AampUtils.h"
#include "_base64.h"
#include "AampConfig.h"
#include "AampConstants.h"
#include <sys/time.h>
#include <string.h>
#include <assert.h>
#include <ctime>
#include <curl/curl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fstream>
#include <dirent.h>
#include <algorithm>

Include dependency graph for AampUtils.cpp:

Go to the source code of this file.

Macros
#define	DEFER_DRM_LIC_OFFSET_FROM_START 5

#define	DEFER_DRM_LIC_OFFSET_TO_UPPER_BOUND 5

#define	MAC_STRING_LEN 12

#define	URAND_STRING_LEN 16

#define	RAND_STRING_LEN (MAC_STRING_LEN + 2*URAND_STRING_LEN)

#define	MAX_BUFF_LENGTH 4096

#define	AAMP_AUDIO_FORMAT_MAP_LEN ARRAY_SIZE(mAudioFormatMap)

#define	AAMP_VIDEO_FORMAT_MAP_LEN ARRAY_SIZE(mVideoFormatMap)

Enumerations
enum	HarvestConfigType
	Harvest Configuration type. More...

Functions
long long	aamp_GetCurrentTimeMS (void)
	Get current time from epoch is milliseconds. More...

void	getDefaultHarvestPath (std::string &value)
	Get harvest path to dump the files.

static const char *	ParseUriProtocol (const char *uri)
	parse leading protcocol from uri if present More...

void	aamp_ResolveURL (std::string &dst, std::string base, const char *uri, bool bPropagateUriParams)
	Resolve file URL from the base and file path.

bool	aamp_IsAbsoluteURL (const std::string &url)
	distinguish between absolute and relative urls More...

std::string	aamp_getHostFromURL (std::string url)
	Extract host string from url. More...

bool	aamp_IsLocalHost (std::string Hostname)
	check is local or not from given hostname More...

bool	aamp_StartsWith (const char inputStr, const char prefix)
	Check if string start with a prefix. More...

char *	aamp_Base64_URL_Encode (const unsigned char *src, size_t len)
	convert blob of binary data to ascii base64-URL-encoded equivalent More...

unsigned char *	aamp_Base64_URL_Decode (const char src, size_t len, size_t srcLen)
	decode base64 URL encoded data to binary equivalent More...

void	aamp_DecodeUrlParameter (std::string &uriParam)
	unescape uri-encoded uri parameter More...

double	ISO8601DateTimeToUTCSeconds (const char *ptr)
	Parse date time from ISO8601 string and return value in seconds. More...

static size_t	MyRpcWriteFunction (void buffer, size_t size, size_t nmemb, void context)

std::string	aamp_PostJsonRPC (std::string id, std::string method, std::string params)
	aamp_PostJsonRPC posts JSONRPC data

int	aamp_GetDeferTimeMs (long maxTimeSeconds)
	Get time to defer DRM acquisition. More...

DRMSystems	GetDrmSystem (std::string drmSystemID)
	Get DRM system from ID. More...

const char *	GetDrmSystemName (DRMSystems drmSystem)
	Get name of DRM system. More...

const char *	GetDrmSystemID (DRMSystems drmSystem)
	Get ID of DRM system. More...

void	UrlEncode (std::string inStr, std::string &outStr)
	Encode URL. More...

void	trim (std::string &src)
	Trim a string.

std::string	Getiso639map_NormalizeLanguageCode (std::string lang, LangCodePreference preferLangFormat)
	To get the preferred iso639mapped language code. More...

struct timespec	aamp_GetTimespec (int timeInMs)
	To get the timespec. More...

static void	createdir (const char *dirpath)
	Inline function to create directory. More...

int	getHarvestConfigForMedia (MediaType fileType)
	Get harvest config corresponds to Media type. More...

bool	aamp_WriteFile (std::string fileName, const char data, size_t len, MediaType &fileType, unsigned int count, const char prefix)
	Write - file to storage.

float	getWorkingTrickplayRate (float rate)
	Get compatible trickplay for 6s cadense of iframe track from the given rates.

float	getPseudoTrickplayRate (float rate)
	Get reverse map the working rates to the rates given by platform player.

void	stream2hex (const std::string str, std::string &hexstr, bool capital)
	Convert string of chars to its representative string of hex numbers.

void	mssleep (int milliseconds)
	Sleep for given milliseconds.

const char *	GetAudioFormatStringForCodec (StreamOutputFormat input)

const FormatMap *	GetAudioFormatForCodec (const char *codecs)

const FormatMap *	GetVideoFormatForCodec (const char *codecs)

Variables
const FormatMap	mAudioFormatMap []

const FormatMap	mVideoFormatMap []

yes

Common utility functions.

Definition in file AampUtils.cpp.

Enumeration Type Documentation

◆ HarvestConfigType

enum HarvestConfigType

Harvest Configuration type.

Enumerator
eHARVEST_DISABLE_DEFAULT	Desable harversting for unknown type
eHARVEST_ENAABLE_VIDEO	Enable Harvest Video fragments - set 1st bit
eHARVEST_ENAABLE_AUDIO	Enable Harvest audio - set 2nd bit
eHARVEST_ENAABLE_SUBTITLE	Enable Harvest subtitle - set 3rd bit
eHARVEST_ENAABLE_AUX_AUDIO	Enable Harvest auxiliary audio - set 4th bit
eHARVEST_ENAABLE_MANIFEST	Enable Harvest manifest - set 5th bit
eHARVEST_ENAABLE_LICENCE	Enable Harvest license - set 6th bit
eHARVEST_ENAABLE_IFRAME	Enable Harvest iframe - set 7th bit
eHARVEST_ENAABLE_INIT_VIDEO	Enable Harvest video init fragment - set 8th bit
eHARVEST_ENAABLE_INIT_AUDIO	Enable Harvest audio init fragment - set 9th bit
eHARVEST_ENAABLE_INIT_SUBTITLE	Enable Harvest subtitle init fragment - set 10th bit
eHARVEST_ENAABLE_INIT_AUX_AUDIO	Enable Harvest auxiliary audio init fragment - set 11th bit
eHARVEST_ENAABLE_PLAYLIST_VIDEO	Enable Harvest video playlist - set 12th bit
eHARVEST_ENAABLE_PLAYLIST_AUDIO	Enable Harvest audio playlist - set 13th bit
eHARVEST_ENAABLE_PLAYLIST_SUBTITLE	Enable Harvest subtitle playlist - set 14th bit
eHARVEST_ENAABLE_PLAYLIST_AUX_AUDIO	Enable Harvest auxiliary audio playlist - set 15th bit
eHARVEST_ENAABLE_PLAYLIST_IFRAME	Enable Harvest Iframe playlist - set 16th bit
eHARVEST_ENAABLE_INIT_IFRAME	Enable Harvest IFRAME init fragment - set 17th bit
eHARVEST_ENAABLE_DSM_CC	Enable Harvest digital storage media command and control (DSM-CC)- set 18th bit
eHARVEST_ENAABLE_DEFAULT	Harvest unknown - Enable all by default

Definition at line 758 of file AampUtils.cpp.

Function Documentation

◆ aamp_GetCurrentTimeMS()

aamp_GetCurrentTimeMS ( void )

Get current time from epoch is milliseconds.

Return values

-	current time in milliseconds

Definition at line 92 of file AampUtils.cpp.

◆ ParseUriProtocol()

static const char* ParseUriProtocol ( const char * uri )

static

parse leading protcocol from uri if present

Parameters

[in] uri manifest/ fragment uri

Return values

return pointer just past protocol (i.e. http://) if present (or) return NULL uri doesn't start with protcol

Definition at line 127 of file AampUtils.cpp.

◆ aamp_IsAbsoluteURL()

bool aamp_IsAbsoluteURL ( const std::string & url )

distinguish between absolute and relative urls

Returns: true iff url starts with http:// or https://

Definition at line 221 of file AampUtils.cpp.

◆ aamp_getHostFromURL()

std::string aamp_getHostFromURL ( std::string url )

Extract host string from url.

Return values

host	of input url

Definition at line 232 of file AampUtils.cpp.

◆ aamp_IsLocalHost()

bool aamp_IsLocalHost ( std::string Hostname )

check is local or not from given hostname

Return values

true	if localhost, false otherwise.

Definition at line 267 of file AampUtils.cpp.

◆ aamp_StartsWith()

bool aamp_StartsWith	(	const char *	inputStr,
		const char *	prefix
	)

Check if string start with a prefix.

Return values

TRUE	if substring is found in bigstring

Definition at line 284 of file AampUtils.cpp.

◆ aamp_Base64_URL_Encode()

char* aamp_Base64_URL_Encode	(	const unsigned char *	src,
		size_t	len
	)

convert blob of binary data to ascii base64-URL-encoded equivalent

Return values

pointer	to malloc'd cstring containing base64 URL encoded version of string
NULL	if insufficient memory to allocate base64-URL-encoded copy

Note: caller responsible for freeing returned cstring

Definition at line 304 of file AampUtils.cpp.

◆ aamp_Base64_URL_Decode()

unsigned char* aamp_Base64_URL_Decode	(	const char *	src,
		size_t *	len,
		size_t	srcLen
	)

decode base64 URL encoded data to binary equivalent

Return values

pointer	to malloc'd memory containing decoded binary data
NULL	if insufficient memory to allocate decoded data

Note: caller responsible for freeing returned data

Definition at line 340 of file AampUtils.cpp.

◆ aamp_DecodeUrlParameter()

void aamp_DecodeUrlParameter ( std::string & uriParam )

unescape uri-encoded uri parameter

Parameters

uriParam string to un-escape

Definition at line 366 of file AampUtils.cpp.

◆ ISO8601DateTimeToUTCSeconds()

double ISO8601DateTimeToUTCSeconds ( const char * ptr )

Parse date time from ISO8601 string and return value in seconds.

Return values

durationMs duration in milliseconds

Definition at line 387 of file AampUtils.cpp.

◆ aamp_GetDeferTimeMs()

int aamp_GetDeferTimeMs ( long maxTimeSeconds )

Get time to defer DRM acquisition.

Returns: Time in MS to defer DRM acquisition

Definition at line 539 of file AampUtils.cpp.

◆ GetDrmSystem()

DRMSystems GetDrmSystem ( std::string drmSystemID )

Get DRM system from ID.

Return values

drmSystem drm system

Definition at line 601 of file AampUtils.cpp.

◆ GetDrmSystemName()

const char* GetDrmSystemName ( DRMSystems drmSystem )

Get name of DRM system.

Return values

Name	of the DRM system, empty string if not supported

Definition at line 625 of file AampUtils.cpp.

◆ GetDrmSystemID()

const char* GetDrmSystemID ( DRMSystems drmSystem )

Get ID of DRM system.

Return values

ID	of the DRM system, empty string if not supported

Definition at line 649 of file AampUtils.cpp.

◆ UrlEncode()

void UrlEncode	(	std::string	inStr,
		std::string &	outStr
	)

Encode URL.

Returns: Encoding status

Definition at line 678 of file AampUtils.cpp.

◆ Getiso639map_NormalizeLanguageCode()

std::string Getiso639map_NormalizeLanguageCode	(	std::string	lang,
		LangCodePreference	preferLangFormat
	)

To get the preferred iso639mapped language code.

Return values

[out] preferred iso639 mapped language.

Definition at line 725 of file AampUtils.cpp.

◆ aamp_GetTimespec()

struct timespec aamp_GetTimespec ( int timeInMs )

To get the timespec.

Return values

[out] timespec.

Definition at line 741 of file AampUtils.cpp.

◆ createdir()

static void createdir ( const char * dirpath )

inlinestatic

Inline function to create directory.

Parameters

dirpath - path name

Definition at line 786 of file AampUtils.cpp.

◆ getHarvestConfigForMedia()

int getHarvestConfigForMedia ( MediaType fileType )

Get harvest config corresponds to Media type.

Returns: harvestType

Definition at line 807 of file AampUtils.cpp.

Variable Documentation

◆ mAudioFormatMap

const FormatMap mAudioFormatMap[]

Initial value:

=
{
        { "mp4a.40.2", FORMAT_AUDIO_ES_AAC },
        { "mp4a.40.5", FORMAT_AUDIO_ES_AAC },
        { "ac-3", FORMAT_AUDIO_ES_AC3 },
        { "mp4a.a5", FORMAT_AUDIO_ES_AC3 },
        { "ac-4.02.01.01", FORMAT_AUDIO_ES_AC4 },
        { "ac-4.02.01.02", FORMAT_AUDIO_ES_AC4 },
        { "ec-3", FORMAT_AUDIO_ES_EC3 },
        { "ec+3", FORMAT_AUDIO_ES_ATMOS },
        { "eac3", FORMAT_AUDIO_ES_EC3 }
}

Definition at line 61 of file AampUtils.cpp.

◆ mVideoFormatMap

const FormatMap mVideoFormatMap[]

Initial value:

=
{
        { "avc1.", FORMAT_VIDEO_ES_H264 },
        { "hvc1.", FORMAT_VIDEO_ES_HEVC },
        { "hev1.", FORMAT_VIDEO_ES_HEVC },
        { "mpeg2v", FORMAT_VIDEO_ES_MPEG2 }
}

Definition at line 78 of file AampUtils.cpp.

Macros

Enumerations

Functions

Variables

yes

Enumeration Type Documentation

◆ HarvestConfigType

Function Documentation

◆ aamp_GetCurrentTimeMS()

◆ ParseUriProtocol()

◆ aamp_IsAbsoluteURL()

◆ aamp_getHostFromURL()

◆ aamp_IsLocalHost()

◆ aamp_StartsWith()

◆ aamp_Base64_URL_Encode()

◆ aamp_Base64_URL_Decode()

◆ aamp_DecodeUrlParameter()

◆ ISO8601DateTimeToUTCSeconds()

◆ aamp_GetDeferTimeMs()

◆ GetDrmSystem()

◆ GetDrmSystemName()

◆ GetDrmSystemID()

◆ UrlEncode()

◆ Getiso639map_NormalizeLanguageCode()

◆ aamp_GetTimespec()

◆ createdir()

◆ getHarvestConfigForMedia()

Variable Documentation

◆ mAudioFormatMap

◆ mVideoFormatMap