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/*
* Copyright (C) 2014 Intel Corporation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __DRM_COMMON_API_H__
#define __DRM_COMMON_API_H__
#include <inttypes.h>
/*
* Maximum number of bytes for an audio or video data DMA.
*/
#define MAX_DMA_DATA_SIZE_IN_BYTES (4 * 1024 * 1024)
/*
* The size of an AES Initialization Vector counter in bytes.
*/
#define AES_IV_COUNTER_SIZE_IN_BYTES 16
#define DRM_PLATCAP_IED 0x01
#define DRM_PLATCAP_IMR 0x02
#define DRM_PLATCAP_EPID 0x04
#define DRM_PLATCAP_HDCP 0x08
// Secure clock transaction ID (TID) size in bytes.
#define DRM_TID_SIZE 16
#define MAX_RNG_SIZE_IN_BYTES (4 * 1024)
//
// Secure clock time of day data type.
// day_of_month: starts with 1.
// month: 0 = January.
// year: Epoch is 70 (i.e., 1970). Maximum value is 138 (i.e., 2038).
//
struct time_of_day
{
uint8_t sec;
uint8_t min;
uint8_t hour;
uint8_t day_of_week;
uint8_t day_of_month;
uint8_t month;
uint8_t year;
uint8_t padding;
};
//
// Secure clock server response data type.
//
struct drm_secureclock_server_response
{
uint8_t tid[DRM_TID_SIZE];
struct time_of_day current_time;
struct time_of_day refresh_time;
uint8_t signature[256];
};
/*
* DRM Schemes
*/
/*
typedef enum {
DRM_SCHEME_Netflix,
DRM_SCHEME_Widevine,
DRM_SCHEME_WidevineHLS,
} drm_scheme_t;
*/
struct drm_platform_caps
{
uint32_t imr_size;
uint32_t reserved[15];
};
/*
* DRM Library Initialization
* Description:
* Initializes the security engine driver for DRM library use.
*/
uint32_t drm_library_init(void);
/*
* @brief Writes random bytes into buffer
*/
uint32_t drm_get_random(
uint8_t *rand_num_buf,
uint32_t buf_size);
/*!
* Create a DRM session
*/
uint32_t drm_create_session(
uint32_t drm_scheme,
uint32_t *sessionid_ptr);
/*!
* Destroy the specified DRM session
*/
uint32_t drm_destroy_session(
uint32_t session_id);
/*
* Keeps an active DRM session from timing out
*/
uint32_t drm_keep_alive(
uint32_t session_id,
uint32_t *timeout);
/*
* Query secure platform capabilities
*/
uint32_t drm_query_platformcapabilities(
uint32_t *plat_cap,
struct drm_platform_caps *cap_array);
/*
* @brief Pauses the playback of a video decryption session.
* @param session_id The ID number of the session to pause playback.
* @return DRM_SUCCESSFUL The video decryption session was paused.
*/
uint32_t drm_playback_pause(
uint32_t session_id);
/*
* @brief Resumes the playback of a paused video decryption session.
* @param session_id The ID number of the session to resume playback.
* @return DRM_SUCCESSFUL The video decryption session was resumed.
*/
uint32_t drm_playback_resume(
uint32_t session_id);
/*!
* @brief Enables protected video path for DRM playback
*/
uint32_t drm_start_playback(void);
/*!
* @brief - Disables protected video path for DRM
*/
uint32_t drm_stop_playback(void);
#endif
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