IHDCP.h revision 279dcd89ab1d2de91dfe95e461412a0f577a6891 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <binder/IInterface.h>
18#include <media/hardware/HDCPAPI.h>
19#include <media/stagefright/foundation/ABase.h>
20
21namespace android {
22
23struct IHDCPObserver : public IInterface {
24    DECLARE_META_INTERFACE(HDCPObserver);
25
26    virtual void notify(
27            int msg, int ext1, int ext2, const Parcel *obj) = 0;
28
29private:
30    DISALLOW_EVIL_CONSTRUCTORS(IHDCPObserver);
31};
32
33struct IHDCP : public IInterface {
34    DECLARE_META_INTERFACE(HDCP);
35
36    // Called to specify the observer that receives asynchronous notifications
37    // from the HDCP implementation to signal completion/failure of asynchronous
38    // operations (such as initialization) or out of band events.
39    virtual status_t setObserver(const sp<IHDCPObserver> &observer) = 0;
40
41    // Request to setup an HDCP session with the specified host listening
42    // on the specified port.
43    virtual status_t initAsync(const char *host, unsigned port) = 0;
44
45    // Request to shutdown the active HDCP session.
46    virtual status_t shutdownAsync() = 0;
47
48    // ENCRYPTION only:
49    // Encrypt data according to the HDCP spec. "size" bytes of data are
50    // available at "inData" (virtual address), "size" may not be a multiple
51    // of 128 bits (16 bytes). An equal number of encrypted bytes should be
52    // written to the buffer at "outData" (virtual address).
53    // This operation is to be synchronous, i.e. this call does not return
54    // until outData contains size bytes of encrypted data.
55    // streamCTR will be assigned by the caller (to 0 for the first PES stream,
56    // 1 for the second and so on)
57    // inputCTR _will_be_maintained_by_the_callee_ for each PES stream.
58    virtual status_t encrypt(
59            const void *inData, size_t size, uint32_t streamCTR,
60            uint64_t *outInputCTR, void *outData) = 0;
61
62    // DECRYPTION only:
63    // Decrypt data according to the HDCP spec.
64    // "size" bytes of encrypted data are available at "inData"
65    // (virtual address), "size" may not be a multiple of 128 bits (16 bytes).
66    // An equal number of decrypted bytes should be written to the buffer
67    // at "outData" (virtual address).
68    // This operation is to be synchronous, i.e. this call does not return
69    // until outData contains size bytes of decrypted data.
70    // Both streamCTR and inputCTR will be provided by the caller.
71    virtual status_t decrypt(
72            const void *inData, size_t size,
73            uint32_t streamCTR, uint64_t inputCTR,
74            void *outData) = 0;
75
76private:
77    DISALLOW_EVIL_CONSTRUCTORS(IHDCP);
78};
79
80struct BnHDCPObserver : public BnInterface<IHDCPObserver> {
81    virtual status_t onTransact(
82            uint32_t code, const Parcel &data, Parcel *reply,
83            uint32_t flags = 0);
84};
85
86struct BnHDCP : public BnInterface<IHDCP> {
87    virtual status_t onTransact(
88            uint32_t code, const Parcel &data, Parcel *reply,
89            uint32_t flags = 0);
90};
91
92}  // namespace android
93
94
95