tools.h File Reference

Core definitions and tools of GPAC. More...

#include <gpac/setup.h>
#include <gpac/version.h>
#include <time.h>

Include dependency graph for tools.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	GF_LogExtra
	Extra log instructions. More...
struct	GF_Blob
struct	GF_SystemRTInfo
	run-time system info object More...
struct	GF_FileEnumInfo
	FileEnum info object. More...

Macros
#define	gf_stringizer(x)
	Stringizer. More...
#define	GF_4CC(a, b, c, d)   ((((u32)a)<<24)|(((u32)b)<<16)|(((u32)c)<<8)|((u32)d))
	4CC Formatting More...
#define	GF_4CC_MSIZE   10
#define	GF_SAFEALLOC(__ptr, __struct)
	Memory allocation for a structure. More...
#define	GF_SAFE_ALLOC_N(__ptr, __n, __struct)
	Memory allocation for an array of n structs. More...
#define	GF_LOG(_log_level, _log_tools, __args)
	Message logging. More...
#define	GF_SHA1_DIGEST_SIZE   20
#define	GF_SHA256_DIGEST_SIZE   32
#define	GF_ARRAY_LENGTH(a)   (sizeof(a) / sizeof((a)[0]))

Typedefs
typedef void(*	gf_rmt_user_callback) (void *udta, const char *text)
typedef void(*	gf_log_cbk) (void *cbck, GF_LOG_Level log_level, GF_LOG_Tool log_tool, const char *fmt, va_list vlist)
	Log Message Callback. More...
typedef void(*	gf_on_progress_cbk) (const void *cbck, const char *title, u64 done, u64 total)
	Progress Callback. More...
typedef Bool(*	gf_enum_dir_item) (void *cbck, char *item_name, char *item_path, GF_FileEnumInfo *file_info)
	Directory Enumeration Callback. More...
typedef struct __gf_file_io	GF_FileIO
typedef GF_FileIO *(*	gfio_open_proc) (GF_FileIO *fileio_ref, const char *url, const char *mode, GF_Err *out_error)
typedef GF_Err(*	gfio_seek_proc) (GF_FileIO *fileio, u64 offset, s32 whence)
typedef u32(*	gfio_read_proc) (GF_FileIO *fileio, u8 *buffer, u32 bytes)
typedef u32(*	gfio_write_proc) (GF_FileIO *fileio, u8 *buffer, u32 bytes)
typedef s64(*	gfio_tell_proc) (GF_FileIO *fileio)
typedef Bool(*	gfio_eof_proc) (GF_FileIO *fileio)
typedef int(*	gfio_printf_proc) (GF_FileIO *fileio, const char *format, va_list args)
typedef struct __sha1_context	GF_SHA1Context

Enumerations
enum	GF_Err {   GF_SCRIPT_INFO = 3 , GF_PENDING_PACKET = 2 , GF_EOS = 1 , GF_OK = 0 ,   GF_BAD_PARAM = -1 , GF_OUT_OF_MEM = -2 , GF_IO_ERR = -3 , GF_NOT_SUPPORTED = -4 ,   GF_CORRUPTED_DATA = -5 , GF_SG_UNKNOWN_NODE = -6 , GF_SG_INVALID_PROTO = -7 , GF_SCRIPT_ERROR = -8 ,   GF_BUFFER_TOO_SMALL = -9 , GF_NON_COMPLIANT_BITSTREAM = -10 , GF_FILTER_NOT_FOUND = -11 , GF_URL_ERROR = -12 ,   GF_SERVICE_ERROR = -13 , GF_REMOTE_SERVICE_ERROR = -14 , GF_STREAM_NOT_FOUND = -15 , GF_URL_REMOVED = -16 ,   GF_ISOM_INVALID_FILE = -20 , GF_ISOM_INCOMPLETE_FILE = -21 , GF_ISOM_INVALID_MEDIA = -22 , GF_ISOM_INVALID_MODE = -23 ,   GF_ISOM_UNKNOWN_DATA_REF = -24 , GF_ODF_INVALID_DESCRIPTOR = -30 , GF_ODF_FORBIDDEN_DESCRIPTOR = -31 , GF_ODF_INVALID_COMMAND = -32 ,   GF_BIFS_UNKNOWN_VERSION = -33 , GF_IP_ADDRESS_NOT_FOUND = -40 , GF_IP_CONNECTION_FAILURE = -41 , GF_IP_NETWORK_FAILURE = -42 ,   GF_IP_CONNECTION_CLOSED = -43 , GF_IP_NETWORK_EMPTY = -44 , GF_IP_UDP_TIMEOUT = -46 , GF_AUTHENTICATION_FAILURE = -50 ,   GF_NOT_READY = -51 , GF_INVALID_CONFIGURATION = -52 , GF_NOT_FOUND = -53 , GF_PROFILE_NOT_SUPPORTED = -54 ,   GF_REQUIRES_NEW_INSTANCE = -56 , GF_FILTER_NOT_SUPPORTED = -57 }
enum	GF_MemTrackerType { GF_MemTrackerNone = 0 , GF_MemTrackerSimple , GF_MemTrackerBackTrace }
enum	GF_ConsoleCodes {   GF_CONSOLE_RESET =0 , GF_CONSOLE_RED , GF_CONSOLE_GREEN , GF_CONSOLE_BLUE ,   GF_CONSOLE_YELLOW , GF_CONSOLE_CYAN , GF_CONSOLE_WHITE , GF_CONSOLE_MAGENTA ,   GF_CONSOLE_CLEAR , GF_CONSOLE_SAVE , GF_CONSOLE_RESTORE , GF_CONSOLE_BOLD = 1<<16 ,   GF_CONSOLE_ITALIC = 1<<17 , GF_CONSOLE_UNDERLINED = 1<<18 , GF_CONSOLE_STRIKE = 1<<19 }
enum	GF_LOG_Level {   GF_LOG_QUIET = 0 , GF_LOG_ERROR , GF_LOG_WARNING , GF_LOG_INFO ,   GF_LOG_DEBUG }
	GPAC Log Levels. More...
enum	GF_LOG_Tool {   GF_LOG_CORE = 0 , GF_LOG_CODING , GF_LOG_CONTAINER , GF_LOG_NETWORK ,   GF_LOG_HTTP , GF_LOG_RTP , GF_LOG_CODEC , GF_LOG_PARSER ,   GF_LOG_MEDIA , GF_LOG_SCENE , GF_LOG_SCRIPT , GF_LOG_INTERACT ,   GF_LOG_COMPOSE , GF_LOG_COMPTIME , GF_LOG_CACHE , GF_LOG_MMIO ,   GF_LOG_RTI , GF_LOG_MEMORY , GF_LOG_AUDIO , GF_LOG_MODULE ,   GF_LOG_MUTEX , GF_LOG_CONDITION , GF_LOG_DASH , GF_LOG_FILTER ,   GF_LOG_SCHEDULER , GF_LOG_ROUTE , GF_LOG_CONSOLE , GF_LOG_APP ,   GF_LOG_ALL , GF_LOG_TOOL_MAX = GF_LOG_ALL , GF_LOG_TOOL_UNDEFINED }
	GPAC Log tools. More...
enum	{ GF_BLOB_IN_TRANSFER = 1 , GF_BLOB_CORRUPTED = 1<<1 }
enum	{ GF_RTI_ALL_PROCESSES_TIMES = 1 , GF_RTI_PROCESS_MEMORY = 1<<1 , GF_RTI_SYSTEM_MEMORY_ONLY = 1<<2 }
enum	GF_FileIOWriteState { GF_FIO_WRITE_READY =0 , GF_FIO_WRITE_WAIT , GF_FIO_WRITE_CANCELED }
enum	GF_FileIOCacheState { GF_FILEIO_CACHE_IN_PROGRESS =0 , GF_FILEIO_CACHE_DONE , GF_FILEIO_NO_CACHE }

Functions
const char *	gf_4cc_to_str (u32 type)
const char *	gf_4cc_to_str_safe (u32 type, char szType[GF_4CC_MSIZE])
u32	gf_4cc_parse (const char *val)
const char *	gf_error_to_string (GF_Err e)
	Error Printing. More...
GF_Err	gf_dynstrcat (char **str, const char *to_append, const char *sep)
	dynamic string concatenation More...
Bool	gf_parse_lfrac (const char *str, GF_Fraction64 *frac)
	fraction parsing More...
Bool	gf_parse_frac (const char *str, GF_Fraction *frac)
	fraction parsing More...
Bool	gf_strnistr (const char *text, const char *subtext, u32 subtext_len)
	search string without case More...
const char *	gf_strmemstr (const char *data, u32 data_size, const char *pat)
	search string in buffer More...
u64	gf_timestamp_rescale (u64 value, u64 timescale, u64 new_timescale)
	safe timestamp rescale More...
s64	gf_timestamp_rescale_signed (s64 value, u64 timescale, u64 new_timescale)
	safe signed timestamp rescale More...
Bool	gf_timestamp_less (u64 value1, u64 timescale1, u64 value2, u64 timescale2)
	compare timestamps More...
Bool	gf_timestamp_less_or_equal (u64 value1, u64 timescale1, u64 value2, u64 timescale2)
	compare timestamps More...
Bool	gf_timestamp_greater (u64 value1, u64 timescale1, u64 value2, u64 timescale2)
	compare timestamps More...
Bool	gf_timestamp_greater_or_equal (u64 value1, u64 timescale1, u64 value2, u64 timescale2)
	compare timestamps More...
Bool	gf_timestamp_equal (u64 value1, u64 timescale1, u64 value2, u64 timescale2)
	compare timestamps More...
Bool	gf_strict_atoi (const char *str, s32 *ans)
	strict convert str into integer More...
Bool	gf_strict_atoui (const char *str, u32 *ans)
	strict convert str into unsigned integer More...
GF_Err	gf_sys_init (GF_MemTrackerType mem_tracker_type, const char *profile)
	System setup. More...
void	gf_sys_close ()
	System closing. More...
GF_Err	gf_sys_set_args (s32 argc, const char **argv)
	System arguments. More...
u32	gf_sys_get_argc ()
	Get number of args. More...
const char **	gf_sys_get_argv ()
	Get program arguments. More...
const char *	gf_sys_get_arg (u32 arg)
	Get number of args. More...
const char *	gf_sys_find_global_arg (const char *arg)
	Locate a global filter arg. More...
void	gf_sys_mark_arg_used (s32 arg_idx, Bool used)
	Mark arg as used. More...
Bool	gf_sys_is_arg_used (s32 arg_idx)
	Check if arg is marked as used. More...
Bool	gf_sys_is_test_mode ()
	checks if test mode is enabled More...
Bool	gf_sys_old_arch_compat ()
	checks if compatibility with old arch is enabled More...
u32	gf_sys_is_quiet ()
	checks if running in quiet mode More...
const char *	gf_sys_features (Bool disabled)
GF_Err	gf_sys_profiler_set_callback (void *udta, gf_rmt_user_callback rmt_usr_cbk)
GF_Err	gf_sys_profiler_log (const char *msg)
GF_Err	gf_sys_profiler_send (const char *msg)
void	gf_sys_profiler_enable_sampling (Bool enable)
Bool	gf_sys_profiler_sampling_enabled ()
void	gf_sys_set_console_code (FILE *std, GF_ConsoleCodes code)
Bool	gf_log_set_strict_error (Bool strict)
	Log exits at first error assignment. More...
char *	gf_log_get_tools_levels (void)
	gets string-formatted log tools More...
void	gf_log_set_tool_level (GF_LOG_Tool log_tool, GF_LOG_Level log_level)
	Log modules assignment. More...
gf_log_cbk	gf_log_set_callback (void *usr_cbk, gf_log_cbk cbk)
	Log overwrite. More...
Bool	gf_log_tool_level_on (GF_LOG_Tool log_tool, GF_LOG_Level log_level)
	Log level checking. More...
const char *	gf_log_tool_name (GF_LOG_Tool log_tool)
	Log tool name. More...
u32	gf_log_get_tool_level (GF_LOG_Tool log_tool)
	Log level getter. More...
GF_Err	gf_log_set_tools_levels (const char *log_tools_levels, Bool reset_all)
	Set log tools and levels. More...
GF_Err	gf_log_modify_tools_levels (const char *val)
	Modify log tools and levels. More...
Bool	gf_log_use_color ()
	Checks if color logs is enabled. More...
Bool	gf_log_use_file ()
	Checks if logs are stored to file. More...
void	gf_log_reset_file ()
	Resets log file Resets log file if any log file name was specified, by closing and reopening a new file.
void	gf_log_push_extra (const GF_LogExtra *log)
void	gf_log_pop_extra (const GF_LogExtra *log)
void	gf_log_reset_extras ()
void	gf_rand_init (Bool Reset)
	PseudoRandom Integer Generation Initialization. More...
u32	gf_rand ()
void	gf_get_user_name (char buf[1024])
void	gf_set_progress (const char *title, u64 done, u64 total)
	Progress formatting. More...
void	gf_set_progress_callback (void *user_cbk, gf_on_progress_cbk prog_cbk)
	Progress overwriting Overwrites the progress signaling function by a user-defined one. More...
Bool	gf_prompt_has_input ()
	Prompt checking. More...
char	gf_prompt_get_char ()
	Prompt character flush. More...
GF_Err	gf_prompt_get_size (u32 *width, u32 *height)
	Get prompt TTY size. More...
void	gf_prompt_set_echo_off (Bool echo_off)
	turns prompt echo on/off More...
Bool	gf_sys_get_battery_state (Bool *onBattery, u32 *onCharge, u32 *level, u32 *batteryLifeTime, u32 *batteryFullLifeTime)
GF_Err	gf_bin128_parse (const char *string, bin128 value)
	parses 128 bit from string More...
GF_Err	gf_blob_get (const char *blob_url, u8 **out_data, u32 *out_size, u32 *blob_flags)
GF_Err	gf_blob_release (const char *blob_url)
char *	gf_blob_register (GF_Blob *blob)
void	gf_blob_unregister (GF_Blob *blob)
int	gf_getch ()
	Portable getch() More...
Bool	gf_read_line_input (char *line, int maxSize, Bool showContent)
	Reads a line of input from stdin. More...
u32	gf_sys_clock ()
	System clock query. More...
u64	gf_sys_clock_high_res ()
	High precision system clock query. More...
void	gf_sleep (u32 ms)
	Sleeps thread/process. More...
u64	gf_net_get_utc ()
	gets UTC time in milliseconds More...
u64	gf_net_ntp_to_utc (u64 ntp)
	converts an ntp timestamp into UTC time in milliseconds More...
u64	gf_net_parse_date (const char *date)
	parses date More...
u64	gf_net_get_utc_ts (u32 year, u32 month, u32 day, u32 hour, u32 min, u32 sec)
	returns 64-bit UTC timestamp from year, month, day, hour, min and sec More...
s32	gf_net_get_timezone ()
	gets timezone adjustment in seconds More...
Bool	gf_net_time_is_dst ()
	gets timezone daylight saving time status More...
struct tm *	gf_gmtime (const time_t *time)
	gets time from UTC timestamp More...
u32	gf_sys_get_process_id ()
	Gets process ID. More...
Bool	gf_sys_get_rti (u32 refresh_time_ms, GF_SystemRTInfo *rti, u32 flags)
	Gets Run-Time info. More...
GF_Err	gf_file_load_data (const char *file_name, u8 **out_data, u32 *out_size)
	reads a file into memory More...
GF_Err	gf_file_load_data_filep (FILE *file, u8 **out_data, u32 *out_size)
	reads a file into memory More...
GF_Err	gf_rmdir (const char *DirPathName)
	Delete Directory. More...
GF_Err	gf_mkdir (const char *DirPathName)
	Create Directory. More...
Bool	gf_dir_exists (const char *DirPathName)
	Check Directory Exists. More...
GF_Err	gf_dir_cleanup (const char *DirPathName)
	Create Directory. More...
const char *	gf_get_default_cache_directory ()
u32	gf_file_handles_count ()
size_t	gf_fwrite (const void *ptr, size_t nb_bytes, FILE *stream)
	file writing helper More...
size_t	gf_fread (void *ptr, size_t nbytes, FILE *stream)
	file reading helper More...
char *	gf_fgets (char *buf, size_t size, FILE *stream)
	file reading helper More...
int	gf_fgetc (FILE *stream)
	file reading helper More...
int	gf_fputc (int val, FILE *stream)
	file writing helper More...
int	gf_fputs (const char *buf, FILE *stream)
	file writing helper More...
int	gf_fprintf (FILE *stream, const char *format,...)
	file writing helper More...
int	gf_vfprintf (FILE *stream, const char *format, va_list args)
	file writing helper More...
int	gf_fflush (FILE *stream)
	file flush helper More...
int	gf_feof (FILE *stream)
	end of file helper More...
int	gf_ferror (FILE *stream)
	file error helper More...
u64	gf_fsize (FILE *fp)
	file size helper More...
Bool	gf_fileio_check (FILE *fp)
	file IO checker More...
GF_FileIOWriteState	gf_fileio_write_ready (FILE *fp)
	file IO write checker More...
FILE *	gf_fopen (const char *file_name, const char *mode)
	file opening More...
FILE *	gf_fopen_ex (const char *file_name, const char *parent_url, const char *mode, Bool no_warn)
	file opening More...
s32	gf_fclose (FILE *file)
	file closing More...
u64	gf_ftell (FILE *f)
	large file position query More...
s32	gf_fseek (FILE *f, s64 pos, s32 whence)
	large file seeking More...
char *	gf_file_basename (const char *filename)
char *	gf_file_ext_start (const char *filename)
GF_Err	gf_enum_directory (const char *dir, Bool enum_directory, gf_enum_dir_item enum_dir, void *cbck, const char *filter)
	Directory enumeration. More...
GF_Err	gf_file_delete (const char *fileName)
	File Deletion. More...
GF_Err	gf_file_move (const char *fileName, const char *newFileName)
	File Move. More...
FILE *	gf_file_temp (char **const fileName)
	Temporary File Creation. More...
u64	gf_file_modification_time (const char *filename)
	File Modification Time. More...
Bool	gf_file_exists (const char *fileName)
	File existence check. More...
Bool	gf_file_exists_ex (const char *file_name, const char *par_name)
	File existence check. More...
GF_FileIO *	gf_fileio_new (char *url, void *udta, gfio_open_proc open, gfio_seek_proc seek, gfio_read_proc read, gfio_write_proc write, gfio_tell_proc tell, gfio_eof_proc eof, gfio_printf_proc printf)
void	gf_fileio_del (GF_FileIO *fileio)
void *	gf_fileio_get_udta (GF_FileIO *fileio)
const char *	gf_fileio_url (GF_FileIO *fileio)
GF_FileIO *	gf_fileio_from_mem (const char *URL, const u8 *data, u32 size)
void	gf_fileio_set_stats (GF_FileIO *fileio, u64 bytes_done, u64 file_size, GF_FileIOCacheState cache_state, u32 bytes_per_sec)
Bool	gf_fileio_get_stats (GF_FileIO *fileio, u64 *bytes_done, u64 *file_size, GF_FileIOCacheState *cache_state, u32 *bytes_per_sec)
void	gf_fileio_set_write_state (GF_FileIO *fileio, GF_FileIOWriteState write_state)
GF_FileIO *	gf_fileio_open_url (GF_FileIO *fileio, const char *url, const char *mode, GF_Err *out_err)
GF_Err	gf_fileio_tag_main_thread (GF_FileIO *fileio)
Bool	gf_fileio_is_main_thread (const char *url)
GF_FileIO *	gf_fileio_from_url (const char *url)
const char *	gf_fileio_factory (GF_FileIO *fileio, const char *new_res_url)
const char *	gf_fileio_translate_url (const char *url)
const char *	gf_fileio_resource_url (GF_FileIO *fileio)
Bool	gf_fileio_read_mode (GF_FileIO *fileio)
Bool	gf_fileio_write_mode (GF_FileIO *fileio)
u32	gf_crc_32 (const u8 *data, u32 size)
	CRC32 compute. More...
GF_Err	gf_gz_compress_payload (u8 **data, u32 data_len, u32 *out_size)
GF_Err	gf_gz_compress_payload_ex (u8 **data, u32 data_len, u32 *out_size, u8 data_offset, Bool skip_if_larger, u8 **out_comp_data, Bool use_gz)
GF_Err	gf_gz_decompress_payload (u8 *data, u32 data_len, u8 **uncompressed_data, u32 *out_size)
GF_Err	gf_gz_decompress_payload_ex (u8 *data, u32 data_len, u8 **uncompressed_data, u32 *out_size, Bool use_gz)
GF_Err	gf_lz_compress_payload (u8 **data, u32 data_len, u32 *out_size)
GF_Err	gf_lz_decompress_payload (u8 *data, u32 data_len, u8 **uncompressed_data, u32 *out_size)
u64	gf_gzseek (void *file, u64 offset, int whence)
u64	gf_gztell (void *file)
s64	gf_gzrewind (void *file)
int	gf_gzeof (void *file)
int	gf_gzclose (void *file)
const char *	gf_gzerror (void *file, int *errnum)
void	gf_gzclearerr (void *file)
void *	gf_gzopen (const char *path, const char *mode)
int	gf_gzread (void *file, void *buf, unsigned len)
int	gf_gzdirect (void *file)
int	gf_gzgetc (void *file)
char *	gf_gzgets (void *file, char *buf, int len)
GF_SHA1Context *	gf_sha1_starts ()
void	gf_sha1_update (GF_SHA1Context *ctx, u8 *input, u32 length)
void	gf_sha1_finish (GF_SHA1Context *ctx, u8 digest[GF_SHA1_DIGEST_SIZE])
GF_Err	gf_sha1_file (const char *filename, u8 digest[GF_SHA1_DIGEST_SIZE])
GF_Err	gf_sha1_file_ptr (FILE *file, u8 digest[GF_SHA1_DIGEST_SIZE])
void	gf_sha1_csum (u8 *buf, u32 buflen, u8 digest[GF_SHA1_DIGEST_SIZE])
void	gf_sha256_csum (const void *buf, u64 buflen, u8 digest[GF_SHA256_DIGEST_SIZE])
const char *	gf_opts_get_key (const char *secName, const char *keyName)
GF_Err	gf_opts_set_key (const char *secName, const char *keyName, const char *keyValue)
void	gf_opts_del_section (const char *secName)
u32	gf_opts_get_section_count ()
const char *	gf_opts_get_section_name (u32 secIndex)
u32	gf_opts_get_key_count (const char *secName)
const char *	gf_opts_get_key_name (const char *secName, u32 keyIndex)
Bool	gf_opts_get_bool (const char *secName, const char *keyName)
u32	gf_opts_get_int (const char *secName, const char *keyName)
const char *	gf_opts_get_key_restricted (const char *secName, const char *keyName)
GF_Err	gf_opts_discard_changes ()
GF_Err	gf_opts_save ()
const char *	gf_opts_get_filename ()
Bool	gf_opts_default_shared_directory (char *path_buffer)
GF_Err	gf_creds_check_password (const char *username, char *password)
Bool	gf_creds_check_membership (const char *username, const char *users, const char *groups)

Detailed Description

This file contains basic functions and core definitions of the GPAC framework. This file is usually included by all GPAC header files since it contains the error definitions.

---

Data Structure Documentation

GF_Blob

struct GF_Blob

Blob structure used to pass data pointer around

Data Fields
u8 *	data	data block of blob
u32	size	size of blob
u32	flags	blob flags
struct __tag_mutex *	mx	blob mutex for multi-thread access

Macro Definition Documentation

GF_SHA256_DIGEST_SIZE

#define GF_SHA256_DIGEST_SIZE   32

checksum size for SHA-256

GF_ARRAY_LENGTH

#define GF_ARRAY_LENGTH

(

a

)

(sizeof(a) / sizeof((a)[0]))

macros to get the size of an array of struct

Function Documentation

gf_sys_get_battery_state()

Bool gf_sys_get_battery_state	(	Bool *	onBattery,
		u32 *	onCharge,
		u32 *	level,
		u32 *	batteryLifeTime,
		u32 *	batteryFullLifeTime
	)

gets battery state

Parameters

onBattery	set to GF_TRUE if running on battery
onCharge	set to GF_TRUE if battery is charging
level	set to battery charge percent
batteryLifeTime	set to battery lifetime
batteryFullLifeTime	set to battery full lifetime

Returns

GF_TRUE if success

gf_bin128_parse()

GF_Err gf_bin128_parse	(	const char *	string,
		bin128	value
	)

Parses 128 bit from string

Parameters

string	the string containing the value in hexa. Non alphanum characters are skipped
value	the value parsed

Returns

error code if any

gf_blob_get()

GF_Err gf_blob_get	(	const char *	blob_url,
		u8 **	out_data,
		u32 *	out_size,
		u32 *	blob_flags
	)

Retrieves data associated with a blob url. If success, gf_blob_release must be called after this

Parameters

blob_url	URL of blob object (ie gmem://p)
out_data	if success, set to blob data pointer
out_size	if success, set to blob data size
blob_flags	if success, set to blob flags - may be NULL

Returns

error code

gf_blob_release()

GF_Err gf_blob_release

(

const char *

blob_url

)

Releases blob data

Parameters

blob_url

URL of blob object (ie gmem://p)

Returns

error code

gf_blob_register()

char* gf_blob_register

(

GF_Blob *

blob

)

Registers a new blob

Parameters

blob	blob object

Returns

URL of blob object (ie gmem://p), must be freed by user

gf_blob_unregister()

void gf_blob_unregister

(

GF_Blob *

blob

)

Unegisters a blob. This must be called before destroying a registered blob

Parameters

blob	blob object

gf_getch()

int gf_getch

(

)

Returns immediately a typed char from stdin

Returns

the typed char

gf_read_line_input()

Bool gf_read_line_input	(	char *	line,
		int	maxSize,
		Bool	showContent
	)

Parameters

line	the buffer to fill
maxSize	the maximum size of the line to read
showContent	boolean indicating if the line read should be printed on stderr or not

Returns

GF_TRUE if some content was read, GF_FALSE otherwise

gf_sha256_csum()

void gf_sha256_csum	(	const void *	buf,
		u64	buflen,
		u8	digest[GF_SHA256_DIGEST_SIZE]
	)

gets SHA-256 of input buffer

Parameters

buf	input buffer to hash
buflen	sizeo of input buffer in bytes
digest	buffer to store message digest