DrmPlugin.cpp revision 01a977aa75c296c5467024a7beac50cbd4ed0335 
1/*
2 * Copyright (C) 2014 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 "ClearKeyCryptoPlugin"
19#include <utils/Log.h>
20
21#include <media/stagefright/MediaErrors.h>
22#include <utils/StrongPointer.h>
23
24#include "DrmPlugin.h"
25
26#include "Session.h"
27
28namespace clearkeydrm {
29
30using android::sp;
31
32status_t DrmPlugin::openSession(Vector<uint8_t>& sessionId) {
33    sp<Session> session = mSessionLibrary->createSession();
34    sessionId = session->sessionId();
35    return android::OK;
36}
37
38status_t DrmPlugin::closeSession(const Vector<uint8_t>& sessionId) {
39    sp<Session> session = mSessionLibrary->findSession(sessionId);
40    if (session.get()) {
41        mSessionLibrary->destroySession(session);
42    }
43    return android::OK;
44}
45
46status_t DrmPlugin::getKeyRequest(
47        const Vector<uint8_t>& scope,
48        const Vector<uint8_t>& initData,
49        const String8& mimeType,
50        KeyType keyType,
51        const KeyedVector<String8, String8>& optionalParameters,
52        Vector<uint8_t>& request,
53        String8& defaultUrl,
54        DrmPlugin::KeyRequestType *keyRequestType) {
55    UNUSED(optionalParameters);
56    if (keyType != kKeyType_Streaming) {
57        return android::ERROR_DRM_CANNOT_HANDLE;
58    }
59    *keyRequestType = DrmPlugin::kKeyRequestType_Initial;
60    defaultUrl.clear();
61    sp<Session> session = mSessionLibrary->findSession(scope);
62    if (!session.get()) {
63        return android::ERROR_DRM_SESSION_NOT_OPENED;
64    }
65    return session->getKeyRequest(initData, mimeType, &request);
66}
67
68status_t DrmPlugin::provideKeyResponse(
69        const Vector<uint8_t>& scope,
70        const Vector<uint8_t>& response,
71        Vector<uint8_t>& keySetId) {
72    sp<Session> session = mSessionLibrary->findSession(scope);
73    if (!session.get()) {
74        return android::ERROR_DRM_SESSION_NOT_OPENED;
75    }
76    status_t res = session->provideKeyResponse(response);
77    if (res == android::OK) {
78        keySetId.clear();
79    }
80    return res;
81}
82
83status_t DrmPlugin::getPropertyString(
84        const String8& name, String8& value) const {
85    if (name == "vendor") {
86        value = "Google";
87    } else if (name == "version") {
88        value = "1.0";
89    } else if (name == "description") {
90        value = "ClearKey CDM";
91    } else if (name == "algorithms") {
92        value = "";
93    } else {
94        ALOGE("App requested unknown string property %s", name.string());
95        return android::ERROR_DRM_CANNOT_HANDLE;
96    }
97    return android::OK;
98}
99
100}  // namespace clearkeydrm
101