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crypto.c File Reference
#include "avformat.h"
#include "libavutil/aes.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "internal.h"
#include "url.h"

Go to the source code of this file.

Data Structures

struct  CryptoContext
 

Macros

#define MAX_BUFFER_BLOCKS   257
 
#define BLOCKSIZE   16
 
#define OFFSET(x)   offsetof(CryptoContext, x)
 
#define D   AV_OPT_FLAG_DECODING_PARAM
 
#define E   AV_OPT_FLAG_ENCODING_PARAM
 

Functions

static int set_aes_arg (CryptoContext *c, uint8_t **buf, int *buf_len, uint8_t *default_buf, int default_buf_len, const char *desc)
 
static int crypto_open2 (URLContext *h, const char *uri, int flags, AVDictionary **options)
 
static int crypto_read (URLContext *h, uint8_t *buf, int size)
 
static int64_t crypto_seek (URLContext *h, int64_t pos, int whence)
 
static int crypto_write (URLContext *h, const unsigned char *buf, int size)
 
static int crypto_close (URLContext *h)
 

Variables

static const AVOption options []
 
static const AVClass crypto_class
 
const URLProtocol ff_crypto_protocol
 

Macro Definition Documentation

#define MAX_BUFFER_BLOCKS   257

Definition at line 30 of file crypto.c.

#define BLOCKSIZE   16

Definition at line 31 of file crypto.c.

Referenced by crypto_close(), crypto_open2(), crypto_read(), crypto_seek(), crypto_write(), and set_aes_arg().

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

Definition at line 63 of file crypto.c.

Definition at line 64 of file crypto.c.

Definition at line 65 of file crypto.c.

Function Documentation

static int set_aes_arg ( CryptoContext c,
uint8_t **  buf,
int buf_len,
uint8_t default_buf,
int  default_buf_len,
const char *  desc 
)
static

Definition at line 83 of file crypto.c.

Referenced by crypto_open2().

static int crypto_open2 ( URLContext h,
const char *  uri,
int  flags,
AVDictionary **  options 
)
static

Definition at line 110 of file crypto.c.

static int crypto_read ( URLContext h,
uint8_t buf,
int  size 
)
static

Definition at line 187 of file crypto.c.

Referenced by crypto_seek().

static int64_t crypto_seek ( URLContext h,
int64_t  pos,
int  whence 
)
static

Definition at line 237 of file crypto.c.

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

Definition at line 337 of file crypto.c.

static int crypto_close ( URLContext h)
static

Definition at line 378 of file crypto.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{"key", "AES encryption/decryption key", OFFSET(key), AV_OPT_TYPE_BINARY, .flags = D|E },
{"iv", "AES encryption/decryption initialization vector", OFFSET(iv), AV_OPT_TYPE_BINARY, .flags = D|E },
{"decryption_key", "AES decryption key", OFFSET(decrypt_key), AV_OPT_TYPE_BINARY, .flags = D },
{"decryption_iv", "AES decryption initialization vector", OFFSET(decrypt_iv), AV_OPT_TYPE_BINARY, .flags = D },
{"encryption_key", "AES encryption key", OFFSET(encrypt_key), AV_OPT_TYPE_BINARY, .flags = E },
{"encryption_iv", "AES encryption initialization vector", OFFSET(encrypt_iv), AV_OPT_TYPE_BINARY, .flags = E },
{ NULL }
}
#define NULL
Definition: coverity.c:32
#define E
Definition: crypto.c:65
#define D
Definition: crypto.c:64
offset must point to a pointer immediately followed by an int for the length
Definition: opt.h:229
#define OFFSET(x)
Definition: crypto.c:63

Definition at line 66 of file crypto.c.

const AVClass crypto_class
static
Initial value:
= {
.class_name = "crypto",
.item_name = av_default_item_name,
.option = options,
}
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
static const AVOption options[]
Definition: crypto.c:66
av_default_item_name

Definition at line 76 of file crypto.c.

const URLProtocol ff_crypto_protocol
Initial value:
= {
.name = "crypto",
.url_open2 = crypto_open2,
.url_seek = crypto_seek,
.url_read = crypto_read,
.url_write = crypto_write,
.url_close = crypto_close,
.priv_data_size = sizeof(CryptoContext),
.priv_data_class = &crypto_class,
}
static int crypto_close(URLContext *h)
Definition: crypto.c:378
static int crypto_read(URLContext *h, uint8_t *buf, int size)
Definition: crypto.c:187
static int flags
Definition: log.c:57
static int crypto_open2(URLContext *h, const char *uri, int flags, AVDictionary **options)
Definition: crypto.c:110
#define URL_PROTOCOL_FLAG_NESTED_SCHEME
Definition: url.h:33
static const AVClass crypto_class
Definition: crypto.c:76
static int64_t crypto_seek(URLContext *h, int64_t pos, int whence)
Definition: crypto.c:237
static int crypto_write(URLContext *h, const unsigned char *buf, int size)
Definition: crypto.c:337

Definition at line 399 of file crypto.c.