Файл encryption_info.h

См. исходные тексты.

Классы
struct	AVSubsampleEncryptionInfo
struct	AVEncryptionInfo
struct	AVEncryptionInitInfo

Определения типов
typedef struct AVSubsampleEncryptionInfo	AVSubsampleEncryptionInfo
typedef struct AVEncryptionInfo	AVEncryptionInfo
typedef struct AVEncryptionInitInfo	AVEncryptionInitInfo

Функции
AVEncryptionInfo *	av_encryption_info_alloc (uint32_t subsample_count, uint32_t key_id_size, uint32_t iv_size)
AVEncryptionInfo *	av_encryption_info_clone (const AVEncryptionInfo *info)
void	av_encryption_info_free (AVEncryptionInfo *info)
AVEncryptionInfo *	av_encryption_info_get_side_data (const uint8_t *side_data, size_t side_data_size)
uint8_t *	av_encryption_info_add_side_data (const AVEncryptionInfo *info, size_t *side_data_size)
AVEncryptionInitInfo *	av_encryption_init_info_alloc (uint32_t system_id_size, uint32_t num_key_ids, uint32_t key_id_size, uint32_t data_size)
void	av_encryption_init_info_free (AVEncryptionInitInfo *info)
AVEncryptionInitInfo *	av_encryption_init_info_get_side_data (const uint8_t *side_data, size_t side_data_size)
uint8_t *	av_encryption_init_info_add_side_data (const AVEncryptionInitInfo *info, size_t *side_data_size)

Типы

AVSubsampleEncryptionInfo

typedef struct AVSubsampleEncryptionInfo AVSubsampleEncryptionInfo

AVEncryptionInfo

typedef struct AVEncryptionInfo AVEncryptionInfo

This describes encryption info for a packet. This contains frame-specific info for how to decrypt the packet before passing it to the decoder.

The size of this struct is not part of the public ABI.

AVEncryptionInitInfo

typedef struct AVEncryptionInitInfo AVEncryptionInitInfo

This describes info used to initialize an encryption key system.

The size of this struct is not part of the public ABI.

Функции

av_encryption_info_alloc()

AVEncryptionInfo* av_encryption_info_alloc	(	uint32_t	subsample_count,
		uint32_t	key_id_size,
		uint32_t	iv_size
	)

Allocates an AVEncryptionInfo structure and sub-pointers to hold the given number of subsamples. This will allocate pointers for the key ID, IV, and subsample entries, set the size members, and zero-initialize the rest.

Аргументы

subsample_count	The number of subsamples.
key_id_size	The number of bytes in the key ID, should be 16.
iv_size	The number of bytes in the IV, should be 16.

Возвращает

The new AVEncryptionInfo structure, or NULL on error.

av_encryption_info_clone()

AVEncryptionInfo* av_encryption_info_clone

(

const AVEncryptionInfo *

info

)

Allocates an AVEncryptionInfo structure with a copy of the given data.

Возвращает

The new AVEncryptionInfo structure, or NULL on error.

av_encryption_info_free()

void av_encryption_info_free

(

AVEncryptionInfo *

info

)

Frees the given encryption info object. This MUST NOT be used to free the side-data data pointer, that should use normal side-data methods.

av_encryption_info_get_side_data()

AVEncryptionInfo* av_encryption_info_get_side_data	(	const uint8_t *	side_data,
		size_t	side_data_size
	)

Creates a copy of the AVEncryptionInfo that is contained in the given side data. The resulting object should be passed to av_encryption_info_free() when done.

Возвращает

The new AVEncryptionInfo structure, or NULL on error.

av_encryption_info_add_side_data()

uint8_t* av_encryption_info_add_side_data	(	const AVEncryptionInfo *	info,
		size_t *	side_data_size
	)

Allocates and initializes side data that holds a copy of the given encryption info. The resulting pointer should be either freed using av_free or given to av_packet_add_side_data().

Возвращает

The new side-data pointer, or NULL.

av_encryption_init_info_alloc()

AVEncryptionInitInfo* av_encryption_init_info_alloc	(	uint32_t	system_id_size,
		uint32_t	num_key_ids,
		uint32_t	key_id_size,
		uint32_t	data_size
	)

Allocates an AVEncryptionInitInfo structure and sub-pointers to hold the given sizes. This will allocate pointers and set all the fields.

Возвращает

The new AVEncryptionInitInfo structure, or NULL on error.

av_encryption_init_info_free()

void av_encryption_init_info_free

(

AVEncryptionInitInfo *

info

)

Frees the given encryption init info object. This MUST NOT be used to free the side-data data pointer, that should use normal side-data methods.

av_encryption_init_info_get_side_data()

AVEncryptionInitInfo* av_encryption_init_info_get_side_data	(	const uint8_t *	side_data,
		size_t	side_data_size
	)

Creates a copy of the AVEncryptionInitInfo that is contained in the given side data. The resulting object should be passed to av_encryption_init_info_free() when done.

Возвращает

The new AVEncryptionInitInfo structure, or NULL on error.

av_encryption_init_info_add_side_data()

uint8_t* av_encryption_init_info_add_side_data	(	const AVEncryptionInitInfo *	info,
		size_t *	side_data_size
	)

Allocates and initializes side data that holds a copy of the given encryption init info. The resulting pointer should be either freed using av_free or given to av_packet_add_side_data().

Возвращает

The new side-data pointer, or NULL.