libcurl.c File Reference

#include "config_components.h"
#include <curl/curl.h>
#include <inttypes.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/error.h"
#include "libavutil/fifo.h"
#include "libavutil/log.h"
#include "libavutil/macros.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "libavutil/time.h"
#include "avformat.h"
#include "http.h"
#include "internal.h"
#include "url.h"
#include "version.h"

Go to the source code of this file.

Data Structures
struct	CurlCmd
struct	CurlLoop
struct	CurlContext

Macros
#define	DEFAULT_USER_AGENT   "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
#define	CURL_DEFAULT_BUFFER_SIZE   (4 << 20)
#define	CURL_WAIT_US   100000
#define	OFFSET(x)   offsetof(CurlContext, x)
#define	D   AV_OPT_FLAG_DECODING_PARAM
#define	E   AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	cmd_kind { CMD_ADD, CMD_REMOVE, CMD_UNPAUSE, CMD_SEEK }

Functions
static int	curlcode_to_averror (CURLcode code)
static int	is_recoverable (CURLcode code)
static size_t	write_callback (char *ptr, size_t size, size_t nmemb, void *userdata)
static int64_t	parse_offset (const char *s)
static void	parse_content_range (CurlContext *c, const char *v)
static size_t	header_callback (char *ptr, size_t size, size_t nitems, void *userdata)
static int	xferinfo_callback (void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
static void	start_request (CurlContext *c)
static void	update_statistics (CurlContext *c)
static void	on_done (CurlContext *c, CURLcode code)
static void	execute_command (CurlLoop *loop, CurlCmd *cmd)
static void *	curl_worker (void *arg)
static int	curl_dispatch (CurlLoop *loop, enum cmd_kind kind, CurlContext *c, int64_t pos, int sync)
static CurlLoop *	curl_loop_create (AVFormatContext *avfc)
static void	print_statistics (CurlLoop *loop)
static void	curl_loop_destroy (CurlLoop *loop)
static int	curl_loop_attach (CurlContext *c, AVFormatContext *avfc)
void	ff_curl_loop_free (struct CurlLoop **loop)
	Release a libcurl event loop and set *loop to NULL. More...
static int	libcurl_close (URLContext *h)
static int	debug_callback (CURL *easy, curl_infotype type, char *data, size_t size, void *userdata)
static struct curl_slist *	build_headers (CurlContext *c)
static int	setup_protocols (CurlContext *c)
static void	setup_curl (CurlContext *c)
static void	curl_cond_wait (CurlContext *c)
static int	wait_for_probe (CurlContext *c)
static int	libcurl_open (URLContext *h, const char *url, int flags, AVDictionary **options)
static int	libcurl_read (URLContext *h, unsigned char *buf, int size)
static int64_t	libcurl_seek (URLContext *h, int64_t pos, int whence)

Variables
static AVMutex	curl_loop_lock = AV_MUTEX_INITIALIZER
static const AVOption	options []
static const AVClass	libcurl_context_class
const URLProtocol	ff_libcurl_protocol

Macro Definition Documentation

DEFAULT_USER_AGENT

#define DEFAULT_USER_AGENT   "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)

Definition at line 47 of file libcurl.c.

CURL_DEFAULT_BUFFER_SIZE

#define CURL_DEFAULT_BUFFER_SIZE   (4 << 20)

Definition at line 48 of file libcurl.c.

CURL_WAIT_US

#define CURL_WAIT_US   100000

Definition at line 52 of file libcurl.c.

OFFSET

#define OFFSET

(

x

)

offsetof(CurlContext, x)

Definition at line 1171 of file libcurl.c.

D

#define D   AV_OPT_FLAG_DECODING_PARAM

Definition at line 1172 of file libcurl.c.

E

#define E   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1173 of file libcurl.c.

Enumeration Type Documentation

cmd_kind

enum cmd_kind

Enumerator
CMD_ADD
CMD_REMOVE
CMD_UNPAUSE
CMD_SEEK

Definition at line 56 of file libcurl.c.

Function Documentation

curlcode_to_averror()

static int curlcode_to_averror ( CURLcode  code )

static

Definition at line 161 of file libcurl.c.

Referenced by on_done().

is_recoverable()

static int is_recoverable ( CURLcode  code )

static

Definition at line 180 of file libcurl.c.

Referenced by on_done().

write_callback()

static size_t write_callback ( char *  ptr, size_t  size, size_t  nmemb, void *  userdata  )

static

Definition at line 202 of file libcurl.c.

Referenced by setup_curl().

parse_offset()

static int64_t parse_offset ( const char *  s )

static

Definition at line 232 of file libcurl.c.

Referenced by parse_content_range().

parse_content_range()

static void parse_content_range ( CurlContext *  c, const char *  v  )

static

Definition at line 239 of file libcurl.c.

Referenced by header_callback().

header_callback()

static size_t header_callback ( char *  ptr, size_t  size, size_t  nitems, void *  userdata  )

static

Definition at line 259 of file libcurl.c.

Referenced by setup_curl().

xferinfo_callback()

static int xferinfo_callback ( void *  userdata, curl_off_t  dltotal, curl_off_t  dlnow, curl_off_t  ultotal, curl_off_t  ulnow  )

static

Definition at line 373 of file libcurl.c.

Referenced by setup_curl().

start_request()

static void start_request ( CurlContext *  c )

static

Definition at line 386 of file libcurl.c.

Referenced by execute_command(), and on_done().

update_statistics()

static void update_statistics ( CurlContext *  c )

static

Definition at line 427 of file libcurl.c.

Referenced by execute_command(), and on_done().

on_done()

static void on_done ( CurlContext *  c, CURLcode  code  )

static

Definition at line 452 of file libcurl.c.

Referenced by curl_worker().

execute_command()

static void execute_command ( CurlLoop *  loop, CurlCmd *  cmd  )

static

Definition at line 526 of file libcurl.c.

Referenced by curl_worker().

curl_worker()

static void* curl_worker ( void *  arg )

static

Definition at line 565 of file libcurl.c.

Referenced by curl_loop_create().

curl_dispatch()

static int curl_dispatch ( CurlLoop *  loop, enum cmd_kind  kind, CurlContext *  c, int64_t  pos, int  sync  )

static

Definition at line 624 of file libcurl.c.

Referenced by libcurl_close(), libcurl_open(), libcurl_read(), and libcurl_seek().

curl_loop_create()

static CurlLoop* curl_loop_create ( AVFormatContext *  avfc )

static

Definition at line 654 of file libcurl.c.

Referenced by curl_loop_attach().

print_statistics()

static void print_statistics ( CurlLoop *  loop )

static

Definition at line 699 of file libcurl.c.

Referenced by curl_loop_destroy().

curl_loop_destroy()

static void curl_loop_destroy ( CurlLoop *  loop )

static

Definition at line 716 of file libcurl.c.

Referenced by ff_curl_loop_free(), and libcurl_close().

curl_loop_attach()

static int curl_loop_attach ( CurlContext *  c, AVFormatContext *  avfc  )

static

Definition at line 740 of file libcurl.c.

Referenced by libcurl_open().

ff_curl_loop_free()

void ff_curl_loop_free

(

struct CurlLoop **

loop

)

Release a libcurl event loop and set *loop to NULL.

No-op when loop or *loop is NULL.

Definition at line 759 of file libcurl.c.

Referenced by avformat_free_context().

libcurl_close()

static int libcurl_close ( URLContext *  h )

static

Definition at line 1145 of file libcurl.c.

Referenced by libcurl_open().

debug_callback()

static int debug_callback ( CURL *  easy, curl_infotype  type, char *  data, size_t  size, void *  userdata  )

static

Definition at line 773 of file libcurl.c.

Referenced by setup_curl().

build_headers()

static struct curl_slist* build_headers ( CurlContext *  c )

static

Definition at line 801 of file libcurl.c.

Referenced by setup_curl().

setup_protocols()

static int setup_protocols ( CurlContext *  c )

static

Definition at line 825 of file libcurl.c.

Referenced by libcurl_open().

setup_curl()

static void setup_curl ( CurlContext *  c )

static

Definition at line 866 of file libcurl.c.

Referenced by libcurl_open().

curl_cond_wait()

static void curl_cond_wait ( CurlContext *  c )

static

Definition at line 943 of file libcurl.c.

Referenced by libcurl_read(), and wait_for_probe().

wait_for_probe()

static int wait_for_probe ( CurlContext *  c )

static

Definition at line 953 of file libcurl.c.

Referenced by libcurl_open().

libcurl_open()

static int libcurl_open ( URLContext *  h, const char *  url, int  flags, AVDictionary **  options  )

static

Definition at line 976 of file libcurl.c.

libcurl_read()

static int libcurl_read ( URLContext *  h, unsigned char *  buf, int  size  )

static

Definition at line 1053 of file libcurl.c.

libcurl_seek()

static int64_t libcurl_seek ( URLContext *  h, int64_t  pos, int  whence  )

static

Definition at line 1096 of file libcurl.c.

Variable Documentation

curl_loop_lock

AVMutex curl_loop_lock = AV_MUTEX_INITIALIZER

static

Definition at line 159 of file libcurl.c.

Referenced by curl_loop_attach().

options

const AVOption options[]

static

Definition at line 1174 of file libcurl.c.

libcurl_context_class

const AVClass libcurl_context_class

static

Initial value:

= {
    .class_name = "libcurl",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1207 of file libcurl.c.

ff_libcurl_protocol

const URLProtocol ff_libcurl_protocol

Initial value:

= {
    .name            = "libcurl",
    .url_open2       = libcurl_open,
    .url_read        = libcurl_read,
    .url_seek        = libcurl_seek,
    .url_close       = libcurl_close,
    .priv_data_size  = sizeof(CurlContext),
    .priv_data_class = &libcurl_context_class,
    .flags           = URL_PROTOCOL_FLAG_NETWORK,
    .default_whitelist = "http,https,libcurl",
}

Definition at line 1214 of file libcurl.c.

Referenced by url_open_whitelist().