HDCP.cpp revision 1b19c9d120869c3182373a9b06a1ed98898df882 
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//#define LOG_NDEBUG 0
18#define LOG_TAG "HDCP"
19#include <utils/Log.h>
20
21#include "HDCP.h"
22
23#include <media/stagefright/foundation/ADebug.h>
24
25#include <dlfcn.h>
26
27namespace android {
28
29HDCP::HDCP()
30    : mLibHandle(NULL),
31      mHDCPModule(NULL) {
32    mLibHandle = dlopen("libstagefright_hdcp.so", RTLD_NOW);
33
34    if (mLibHandle == NULL) {
35        ALOGE("Unable to locate libstagefright_hdcp.so");
36        return;
37    }
38
39    typedef HDCPModule *(*CreateHDCPModuleFunc)();
40    CreateHDCPModuleFunc createHDCPModule =
41        (CreateHDCPModuleFunc)dlsym(mLibHandle, "createHDCPModule");
42
43    if (createHDCPModule == NULL) {
44        ALOGE("Unable to find symbol 'createHDCPModule'.");
45    } else if ((mHDCPModule = createHDCPModule()) == NULL) {
46        ALOGE("createHDCPModule failed.");
47    }
48}
49
50HDCP::~HDCP() {
51    if (mHDCPModule != NULL) {
52        delete mHDCPModule;
53        mHDCPModule = NULL;
54    }
55
56    if (mLibHandle != NULL) {
57        dlclose(mLibHandle);
58        mLibHandle = NULL;
59    }
60}
61
62status_t HDCP::setObserver(const sp<IHDCPObserver> &observer) {
63    if (mHDCPModule == NULL) {
64        return NO_INIT;
65    }
66
67    mObserver = observer;
68
69    return OK;
70}
71
72status_t HDCP::initAsync(const char *host, unsigned port) {
73    if (mHDCPModule == NULL) {
74        return NO_INIT;
75    }
76
77    return mHDCPModule->initAsync(host, port);
78}
79
80status_t HDCP::shutdownAsync() {
81    if (mHDCPModule == NULL) {
82        return NO_INIT;
83    }
84
85    return mHDCPModule->shutdownAsync();
86}
87
88status_t HDCP::encrypt(
89        const void *inData, size_t size, uint32_t streamCTR,
90        uint64_t *outInputCTR, void *outData) {
91    if (mHDCPModule == NULL) {
92        *outInputCTR = 0;
93
94        return NO_INIT;
95    }
96
97    return mHDCPModule->encrypt(inData, size, streamCTR, outInputCTR, outData);
98}
99
100}  // namespace android
101
102