encryption_info.h

См. документацию.

 
#ifndef AVUTIL_ENCRYPTION_INFO_H
#define AVUTIL_ENCRYPTION_INFO_H
 
#include <stddef.h>
#include <stdint.h>
 
typedef struct AVSubsampleEncryptionInfo {
    unsigned int bytes_of_clear_data;
 
    unsigned int bytes_of_protected_data;
} AVSubsampleEncryptionInfo;
 
typedef struct AVEncryptionInfo {
    uint32_t scheme;
 
    uint32_t crypt_byte_block;
 
    uint32_t skip_byte_block;
 
    uint8_t *key_id;
    uint32_t key_id_size;
 
    uint8_t *iv;
    uint32_t iv_size;
 
    AVSubsampleEncryptionInfo *subsamples;
    uint32_t subsample_count;
} AVEncryptionInfo;
 
typedef struct AVEncryptionInitInfo {
    uint8_t* system_id;
    uint32_t system_id_size;
 
    uint8_t** key_ids;
    uint32_t num_key_ids;
    uint32_t key_id_size;
 
    uint8_t* data;
    uint32_t data_size;
 
    struct AVEncryptionInitInfo *next;
} AVEncryptionInitInfo;
 
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);
 
#endif /* AVUTIL_ENCRYPTION_INFO_H */