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 (URLContext *h, 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

MAX_BUFFER_BLOCKS

#define MAX_BUFFER_BLOCKS   257

Definition at line 30 of file crypto.c.

BLOCKSIZE

#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().

OFFSET

#define OFFSET

(

x

)

offsetof(CryptoContext, x)

Definition at line 63 of file crypto.c.

D

#define D   AV_OPT_FLAG_DECODING_PARAM

Definition at line 64 of file crypto.c.

E

#define E   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 65 of file crypto.c.

Function Documentation

set_aes_arg()

static int set_aes_arg ( URLContext *  h, 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().

crypto_open2()

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

static

Definition at line 110 of file crypto.c.

crypto_read()

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

static

Definition at line 183 of file crypto.c.

Referenced by crypto_seek().

crypto_seek()

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

static

Definition at line 233 of file crypto.c.

crypto_write()

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

static

Definition at line 333 of file crypto.c.

crypto_close()

static int crypto_close ( URLContext *  h )

static

Definition at line 374 of file crypto.c.

Variable Documentation

options

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 }
}

Definition at line 66 of file crypto.c.

crypto_class

const AVClass crypto_class

static

Initial value:

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

Definition at line 76 of file crypto.c.

ff_crypto_protocol

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,
    .flags           = URL_PROTOCOL_FLAG_NESTED_SCHEME,
}

Definition at line 396 of file crypto.c.