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cache.c File Reference
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/file.h"
#include "libavutil/opt.h"
#include "libavutil/tree.h"
#include "avformat.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <stdlib.h>
#include "os_support.h"
#include "url.h"

Go to the source code of this file.

Data Structures

struct  CacheEntry
 support keeping files support filling with a background th
struct  Context


#define OFFSET(x)   offsetof(Context, x)


static int cmp (void *key, const void *node)
static int cache_open (URLContext *h, const char *arg, int flags, AVDictionary **options)
static int add_entry (URLContext *h, const unsigned char *buf, int size)
static int cache_read (URLContext *h, unsigned char *buf, int size)
static int64_t cache_seek (URLContext *h, int64_t pos, int whence)
static int cache_close (URLContext *h)


static const AVOption options []
static const AVClass cache_context_class
URLProtocol ff_cache_protocol

Macro Definition Documentation

#define OFFSET (   x)    offsetof(Context, x)

Definition at line 299 of file cache.c.

Definition at line 300 of file cache.c.

Function Documentation

static int cmp ( void key,
const void node 

Definition at line 68 of file cache.c.

Referenced by add_entry(), and cache_read().

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

Definition at line 73 of file cache.c.

static int add_entry ( URLContext h,
const unsigned char *  buf,
int  size 

Definition at line 92 of file cache.c.

Referenced by cache_read().

static int cache_read ( URLContext h,
unsigned char *  buf,
int  size 

Definition at line 155 of file cache.c.

Referenced by cache_seek().

static int64_t cache_seek ( URLContext h,
int64_t  pos,
int  whence 

Definition at line 220 of file cache.c.

static int cache_close ( URLContext h)

Definition at line 285 of file cache.c.

Variable Documentation

const AVOption options[]
Initial value:
= {
{ "read_ahead_limit", "Amount in bytes that may be read ahead when seeking isn't supported, -1 for unlimited", OFFSET(read_ahead_limit), AV_OPT_TYPE_INT, { .i64 = 65536 }, -1, INT_MAX, D },

Definition at line 302 of file cache.c.

const AVClass cache_context_class
Initial value:
= {
.class_name = "Cache",
.item_name = av_default_item_name,
.option = options,

Definition at line 307 of file cache.c.

URLProtocol ff_cache_protocol
Initial value:
= {
.name = "cache",
.url_open2 = cache_open,
.url_read = cache_read,
.url_seek = cache_seek,
.url_close = cache_close,
.priv_data_size = sizeof(Context),
.priv_data_class = &cache_context_class,

Definition at line 314 of file cache.c.