#include <string.h>
#include "encryption_info.h"
#include "mem.h"
#include "intreadwrite.h"

Macros
#define	FF_ENCRYPTION_INFO_EXTRA 24
	This file is part of FFmpeg. More...

#define	FF_ENCRYPTION_INIT_INFO_EXTRA 16

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 *buffer, size_t 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 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...

Macro Definition Documentation

◆ FF_ENCRYPTION_INFO_EXTRA

#define FF_ENCRYPTION_INFO_EXTRA 24

This file is part of FFmpeg.

FFmpeg is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

FFmpeg is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with FFmpeg; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Definition at line 25 of file encryption_info.c.

◆ FF_ENCRYPTION_INIT_INFO_EXTRA

#define FF_ENCRYPTION_INIT_INFO_EXTRA 16

Definition at line 176 of file encryption_info.c.

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.

Definition at line 41 of file encryption_info.c.

Referenced by av_encryption_info_clone(), av_encryption_info_get_side_data(), mov_read_schm(), mov_read_tenc(), and run_encryption_info_test().

◆ 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.

Definition at line 65 of file encryption_info.c.

Referenced by mov_read_sample_encryption_info(), and run_encryption_info_test().

◆ 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.

Definition at line 82 of file encryption_info.c.

Referenced by av_encryption_info_alloc(), mov_free_encryption_index(), mov_free_stream_context(), mov_parse_auxiliary_info(), mov_read_sample_encryption_info(), mov_read_senc(), and run_encryption_info_test().

◆ 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.

Definition at line 92 of file encryption_info.c.

Referenced by run_encryption_info_test().

◆ 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.

Definition at line 127 of file encryption_info.c.

Referenced by cenc_filter(), and run_encryption_info_test().

◆ 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.

Definition at line 178 of file encryption_info.c.

Referenced by av_encryption_init_info_get_side_data(), create_init_info(), and mov_read_pssh().

◆ 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.

Definition at line 216 of file encryption_info.c.

Referenced by av_encryption_init_info_alloc(), av_encryption_init_info_free(), av_encryption_init_info_get_side_data(), mov_read_pssh(), and run_encryption_init_info_test().

◆ 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.

Definition at line 231 of file encryption_info.c.

Referenced by mov_read_pssh(), and run_encryption_init_info_test().

◆ 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.