#include <stddef.h>
#include <stdint.h>

Data Structures
struct	AVSubsampleEncryptionInfo
	This file is part of FFmpeg. More...

struct	AVEncryptionInfo
	This describes encryption info for a packet. More...

struct	AVEncryptionInitInfo
	This describes info used to initialize an encryption key system. More...

Functions
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. More...

AVEncryptionInfo *	av_encryption_info_clone (const AVEncryptionInfo *info)
	Allocates an AVEncryptionInfo structure with a copy of the given data. More...

void	av_encryption_info_free (AVEncryptionInfo *info)
	Frees the given encryption info object. More...

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. More...

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. More...

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. More...

void	av_encryption_init_info_free (AVEncryptionInitInfo *info)
	Frees the given encryption init info object. More...

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. More...

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. More...

Function Documentation

◆ 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.

Parameters

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.

Returns: 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.

Returns: 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.

Returns: 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().

Returns: 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.

Returns: 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.

Returns: 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.