IHDCP.h revision 308bcaa44e578279e61be32b572fdb0b11b1e4c7 
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#include <ui/GraphicBuffer.h>
21
22namespace android {
23
24struct IHDCPObserver : public IInterface {
25    DECLARE_META_INTERFACE(HDCPObserver);
26
27    virtual void notify(
28            int msg, int ext1, int ext2, const Parcel *obj) = 0;
29
30private:
31    DISALLOW_EVIL_CONSTRUCTORS(IHDCPObserver);
32};
33
34struct IHDCP : public IInterface {
35    DECLARE_META_INTERFACE(HDCP);
36
37    // Called to specify the observer that receives asynchronous notifications
38    // from the HDCP implementation to signal completion/failure of asynchronous
39    // operations (such as initialization) or out of band events.
40    virtual status_t setObserver(const sp<IHDCPObserver> &observer) = 0;
41
42    // Request to setup an HDCP session with the specified host listening
43    // on the specified port.
44    virtual status_t initAsync(const char *host, unsigned port) = 0;
45
46    // Request to shutdown the active HDCP session.
47    virtual status_t shutdownAsync() = 0;
48
49    // ENCRYPTION only:
50    // Encrypt data according to the HDCP spec. "size" bytes of data are
51    // available at "inData" (virtual address), "size" may not be a multiple
52    // of 128 bits (16 bytes). An equal number of encrypted bytes should be
53    // written to the buffer at "outData" (virtual address).
54    // This operation is to be synchronous, i.e. this call does not return
55    // until outData contains size bytes of encrypted data.
56    // streamCTR will be assigned by the caller (to 0 for the first PES stream,
57    // 1 for the second and so on)
58    // inputCTR _will_be_maintained_by_the_callee_ for each PES stream.
59    virtual status_t encrypt(
60            const void *inData, size_t size, uint32_t streamCTR,
61            uint64_t *outInputCTR, void *outData) = 0;
62
63    // Encrypt data according to the HDCP spec. "size" bytes of data starting
64    // at location "offset" are available in "buffer" (buffer handle). "size"
65    // may not be a multiple of 128 bits (16 bytes). An equal number of
66    // encrypted bytes should be written to the buffer at "outData" (virtual
67    // address). This operation is to be synchronous, i.e. this call does not
68    // return until outData contains size bytes of encrypted data.
69    // streamCTR will be assigned by the caller (to 0 for the first PES stream,
70    // 1 for the second and so on)
71    // inputCTR _will_be_maintained_by_the_callee_ for each PES stream.
72    virtual status_t encryptNative(
73            const sp<GraphicBuffer> &graphicBuffer,
74            size_t offset, size_t size, uint32_t streamCTR,
75            uint64_t *outInputCTR, void *outData) = 0;
76
77    // DECRYPTION only:
78    // Decrypt data according to the HDCP spec.
79    // "size" bytes of encrypted data are available at "inData"
80    // (virtual address), "size" may not be a multiple of 128 bits (16 bytes).
81    // An equal number of decrypted bytes should be written to the buffer
82    // at "outData" (virtual address).
83    // This operation is to be synchronous, i.e. this call does not return
84    // until outData contains size bytes of decrypted data.
85    // Both streamCTR and inputCTR will be provided by the caller.
86    virtual status_t decrypt(
87            const void *inData, size_t size,
88            uint32_t streamCTR, uint64_t inputCTR,
89            void *outData) = 0;
90
91private:
92    DISALLOW_EVIL_CONSTRUCTORS(IHDCP);
93};
94
95struct BnHDCPObserver : public BnInterface<IHDCPObserver> {
96    virtual status_t onTransact(
97            uint32_t code, const Parcel &data, Parcel *reply,
98            uint32_t flags = 0);
99};
100
101struct BnHDCP : public BnInterface<IHDCP> {
102    virtual status_t onTransact(
103            uint32_t code, const Parcel &data, Parcel *reply,
104            uint32_t flags = 0);
105};
106
107}  // namespace android
108
109
110