async.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/error.h"
#include "libavutil/fifo.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/thread.h"
#include "url.h"
#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	RingBuffer
struct	AsyncContext

Macros
#define	BUFFER_CAPACITY   (4 * 1024 * 1024)
	@TODO support timeout support work with concatdec, hls More...
#define	READ_BACK_CAPACITY   (4 * 1024 * 1024)
#define	SHORT_SEEK_THRESHOLD   (256 * 1024)
#define	OFFSET(x)   offsetof(AsyncContext, x)
#define	D   AV_OPT_FLAG_DECODING_PARAM

Functions
static int	ring_init (RingBuffer *ring, unsigned int capacity, int read_back_capacity)
static void	ring_destroy (RingBuffer *ring)
static void	ring_reset (RingBuffer *ring)
static int	ring_size (RingBuffer *ring)
static int	ring_space (RingBuffer *ring)
static int	ring_read (RingBuffer *ring, void *dest, int buf_size)
static int	wrapped_url_read (void *src, void *dst, size_t *size)
static int	ring_write (RingBuffer *ring, URLContext *h, size_t size)
static int	ring_size_of_read_back (RingBuffer *ring)
static int	ring_drain (RingBuffer *ring, int offset)
static int	async_check_interrupt (void *arg)
static void *	async_buffer_task (void *arg)
static int	async_open (URLContext *h, const char *arg, int flags, AVDictionary **options)
static int	async_close (URLContext *h)
static int	async_read_internal (URLContext *h, void *dest, int size)
static int	async_read (URLContext *h, unsigned char *buf, int size)
static int64_t	async_seek (URLContext *h, int64_t pos, int whence)

Variables
static const AVOption	options []
static const AVClass	async_context_class
const URLProtocol	ff_async_protocol

Macro Definition Documentation

BUFFER_CAPACITY

#define BUFFER_CAPACITY   (4 * 1024 * 1024)

@TODO support timeout support work with concatdec, hls

Definition at line 44 of file async.c.

READ_BACK_CAPACITY

#define READ_BACK_CAPACITY   (4 * 1024 * 1024)

Definition at line 45 of file async.c.

SHORT_SEEK_THRESHOLD

#define SHORT_SEEK_THRESHOLD   (256 * 1024)

Definition at line 46 of file async.c.

OFFSET

#define OFFSET

(

x

)

offsetof(AsyncContext, x)

Definition at line 475 of file async.c.

D

#define D   AV_OPT_FLAG_DECODING_PARAM

Definition at line 476 of file async.c.

Function Documentation

ring_init()

static int ring_init ( RingBuffer *  ring, unsigned int  capacity, int  read_back_capacity  )

static

Definition at line 83 of file async.c.

Referenced by async_open().

ring_destroy()

static void ring_destroy ( RingBuffer *  ring )

static

Definition at line 94 of file async.c.

Referenced by async_close(), and async_open().

ring_reset()

static void ring_reset ( RingBuffer *  ring )

static

Definition at line 99 of file async.c.

Referenced by async_buffer_task().

ring_size()

static int ring_size ( RingBuffer *  ring )

static

Definition at line 105 of file async.c.

Referenced by async_read_internal(), async_seek(), encode_plane(), encode_rgb_frame(), ring_drain(), and ring_read().

ring_space()

static int ring_space ( RingBuffer *  ring )

static

Definition at line 110 of file async.c.

Referenced by async_buffer_task(), and ring_write().

ring_read()

static int ring_read ( RingBuffer *  ring, void *  dest, int  buf_size  )

static

Definition at line 115 of file async.c.

Referenced by async_read_internal().

wrapped_url_read()

static int wrapped_url_read ( void *  src, void *  dst, size_t *  size  )

static

Definition at line 132 of file async.c.

Referenced by ring_write().

ring_write()

static int ring_write ( RingBuffer *  ring, URLContext *  h, size_t  size  )

static

Definition at line 145 of file async.c.

Referenced by async_buffer_task().

ring_size_of_read_back()

static int ring_size_of_read_back ( RingBuffer *  ring )

static

Definition at line 157 of file async.c.

Referenced by async_seek(), and ring_drain().

ring_drain()

static int ring_drain ( RingBuffer *  ring, int  offset  )

static

Definition at line 162 of file async.c.

Referenced by async_seek().

async_check_interrupt()

static int async_check_interrupt ( void *  arg )

static

Definition at line 170 of file async.c.

Referenced by async_buffer_task(), async_open(), async_read_internal(), and async_seek().

async_buffer_task()

static void* async_buffer_task ( void *  arg )

static

Definition at line 184 of file async.c.

Referenced by async_open().

async_open()

static int async_open ( URLContext *  h, const char *  arg, int  flags, AVDictionary **  options  )

static

Definition at line 250 of file async.c.

async_close()

static int async_close ( URLContext *  h )

static

Definition at line 317 of file async.c.

async_read_internal()

static int async_read_internal ( URLContext *  h, void *  dest, int  size  )

static

Definition at line 340 of file async.c.

Referenced by async_read(), and async_seek().

async_read()

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

static

Definition at line 387 of file async.c.

async_seek()

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

static

Definition at line 392 of file async.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    {NULL},
}

Definition at line 478 of file async.c.

Referenced by async_open().

async_context_class

const AVClass async_context_class

static

Initial value:

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

Definition at line 485 of file async.c.

ff_async_protocol

const URLProtocol ff_async_protocol

Initial value:

= {
    .name                = "async",
    .url_open2           = async_open,
    .url_read            = async_read,
    .url_seek            = async_seek,
    .url_close           = async_close,
    .priv_data_size      = sizeof(AsyncContext),
    .priv_data_class     = &async_context_class,
}

Definition at line 492 of file async.c.