From 441a78d5e224e0d67f9b52fa9adc795c6944159b Mon Sep 17 00:00:00 2001
From: Jeff Tinker <jtinker@google.com>
Date: Fri, 8 Feb 2013 10:18:35 -0800
Subject: Implementing MediaDrm APIs

Change-Id: I9ff8eeb7d0c383b5c0c68cd54eb54ce7d2d22fe6
---
 media/libmedia/IDrm.cpp | 551 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 551 insertions(+)
 create mode 100644 media/libmedia/IDrm.cpp

(limited to 'media/libmedia/IDrm.cpp')

diff --git a/media/libmedia/IDrm.cpp b/media/libmedia/IDrm.cpp
new file mode 100644
index 0000000..3b13ec6
--- /dev/null
+++ b/media/libmedia/IDrm.cpp
@@ -0,0 +1,551 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "IDrm"
+#include <utils/Log.h>
+
+#include <binder/Parcel.h>
+#include <media/IDrm.h>
+#include <media/stagefright/MediaErrors.h>
+#include <media/stagefright/foundation/ADebug.h>
+#include <media/stagefright/foundation/AString.h>
+
+namespace android {
+
+enum {
+    INIT_CHECK = IBinder::FIRST_CALL_TRANSACTION,
+    IS_CRYPTO_SUPPORTED,
+    CREATE_PLUGIN,
+    DESTROY_PLUGIN,
+    OPEN_SESSION,
+    CLOSE_SESSION,
+    GET_LICENSE_REQUEST,
+    PROVIDE_LICENSE_RESPONSE,
+    REMOVE_LICENSE,
+    QUERY_LICENSE_STATUS,
+    GET_PROVISION_REQUEST,
+    PROVIDE_PROVISION_RESPONSE,
+    GET_SECURE_STOPS,
+    RELEASE_SECURE_STOPS,
+    GET_PROPERTY_STRING,
+    GET_PROPERTY_BYTE_ARRAY,
+    SET_PROPERTY_STRING,
+    SET_PROPERTY_BYTE_ARRAY
+};
+
+struct BpDrm : public BpInterface<IDrm> {
+    BpDrm(const sp<IBinder> &impl)
+        : BpInterface<IDrm>(impl) {
+    }
+
+    virtual status_t initCheck() const {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+        remote()->transact(INIT_CHECK, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual bool isCryptoSchemeSupported(const uint8_t uuid[16]) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+        data.write(uuid, 16);
+        remote()->transact(IS_CRYPTO_SUPPORTED, data, &reply);
+
+        return reply.readInt32() != 0;
+    }
+
+    virtual status_t createPlugin(const uint8_t uuid[16]) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+        data.write(uuid, 16);
+
+        remote()->transact(CREATE_PLUGIN, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t destroyPlugin() {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+        remote()->transact(DESTROY_PLUGIN, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t openSession(Vector<uint8_t> &sessionId) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        remote()->transact(OPEN_SESSION, data, &reply);
+        uint32_t size = reply.readInt32();
+        sessionId.insertAt((size_t)0, size);
+        reply.read(sessionId.editArray(), size);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t closeSession(Vector<uint8_t> const &sessionId) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(sessionId.size());
+        data.write(sessionId.array(), sessionId.size());
+        remote()->transact(CLOSE_SESSION, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t
+        getLicenseRequest(Vector<uint8_t> const &sessionId,
+                          Vector<uint8_t> const &initData,
+                          String8 const &mimeType, DrmPlugin::LicenseType licenseType,
+                          KeyedVector<String8, String8> const &optionalParameters,
+                          Vector<uint8_t> &request, String8 &defaultUrl) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(sessionId.size());
+        data.write(sessionId.array(), sessionId.size());
+
+        data.writeInt32(initData.size());
+        data.write(initData.array(), initData.size());
+
+        data.writeString8(mimeType);
+        data.writeInt32((uint32_t)licenseType);
+
+        data.writeInt32(optionalParameters.size());
+        for (size_t i = 0; i < optionalParameters.size(); ++i) {
+            data.writeString8(optionalParameters.keyAt(i));
+            data.writeString8(optionalParameters.valueAt(i));
+        }
+        remote()->transact(GET_LICENSE_REQUEST, data, &reply);
+
+        uint32_t len = reply.readInt32();
+        request.insertAt((size_t)0, len);
+        reply.read(request.editArray(), len);
+        defaultUrl = reply.readString8();
+
+        return reply.readInt32();
+    }
+
+    virtual status_t provideLicenseResponse(Vector<uint8_t> const &sessionId,
+                                            Vector<uint8_t> const &response) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(sessionId.size());
+        data.write(sessionId.array(), sessionId.size());
+        data.writeInt32(response.size());
+        data.write(response.array(), response.size());
+        remote()->transact(PROVIDE_LICENSE_RESPONSE, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t removeLicense(Vector<uint8_t> const &sessionId) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(sessionId.size());
+        data.write(sessionId.array(), sessionId.size());
+        remote()->transact(REMOVE_LICENSE, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t queryLicenseStatus(Vector<uint8_t> const &sessionId,
+                                        KeyedVector<String8, String8> &infoMap) const {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(sessionId.size());
+        data.write(sessionId.array(), sessionId.size());
+
+        remote()->transact(QUERY_LICENSE_STATUS, data, &reply);
+
+        infoMap.clear();
+        size_t count = reply.readInt32();
+        for (size_t i = 0; i < count; i++) {
+            String8 key = reply.readString8();
+            String8 value = reply.readString8();
+            infoMap.add(key, value);
+        }
+        return reply.readInt32();
+    }
+
+    virtual status_t getProvisionRequest(Vector<uint8_t> &request,
+                                         String8 &defaultUrl) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        remote()->transact(GET_PROVISION_REQUEST, data, &reply);
+
+        uint32_t len = reply.readInt32();
+        request.insertAt((size_t)0, len);
+        reply.read(request.editArray(), len);
+        defaultUrl = reply.readString8();
+
+        return reply.readInt32();
+    }
+
+    virtual status_t provideProvisionResponse(Vector<uint8_t> const &response) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(response.size());
+        data.write(response.array(), response.size());
+        remote()->transact(PROVIDE_PROVISION_RESPONSE, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t getSecureStops(List<Vector<uint8_t> > &secureStops) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        remote()->transact(GET_SECURE_STOPS, data, &reply);
+
+        secureStops.clear();
+        uint32_t count = reply.readInt32();
+        for (size_t i = 0; i < count; i++) {
+            Vector<uint8_t> secureStop;
+            uint32_t len = reply.readInt32();
+            secureStop.insertAt((size_t)0, len);
+            reply.read(secureStop.editArray(), len);
+            secureStops.push_back(secureStop);
+        }
+        return reply.readInt32();
+    }
+
+    virtual status_t releaseSecureStops(Vector<uint8_t> const &ssRelease) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeInt32(ssRelease.size());
+        data.write(ssRelease.array(), ssRelease.size());
+        remote()->transact(RELEASE_SECURE_STOPS, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t getPropertyString(String8 const &name, String8 &value) const {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeString8(name);
+        remote()->transact(GET_PROPERTY_STRING, data, &reply);
+
+        value = reply.readString8();
+        return reply.readInt32();
+    }
+
+    virtual status_t getPropertyByteArray(String8 const &name, Vector<uint8_t> &value) const {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeString8(name);
+        remote()->transact(GET_PROPERTY_BYTE_ARRAY, data, &reply);
+
+        uint32_t len = reply.readInt32();
+        value.insertAt((size_t)0, len);
+        reply.read(value.editArray(), len);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t setPropertyString(String8 const &name, String8 const &value) const {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeString8(name);
+        data.writeString8(value);
+        remote()->transact(SET_PROPERTY_STRING, data, &reply);
+
+        return reply.readInt32();
+    }
+
+    virtual status_t setPropertyByteArray(String8 const &name,
+                                          Vector<uint8_t> const &value) const {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDrm::getInterfaceDescriptor());
+
+        data.writeString8(name);
+        data.writeInt32(value.size());
+        data.write(value.array(), value.size());
+        remote()->transact(SET_PROPERTY_BYTE_ARRAY, data, &reply);
+
+        return reply.readInt32();
+    }
+
+
+private:
+    DISALLOW_EVIL_CONSTRUCTORS(BpDrm);
+};
+
+IMPLEMENT_META_INTERFACE(Drm, "android.drm.IDrm");
+
+////////////////////////////////////////////////////////////////////////////////
+
+status_t BnDrm::onTransact(
+    uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
+    switch (code) {
+        case INIT_CHECK:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            reply->writeInt32(initCheck());
+            return OK;
+        }
+
+        case IS_CRYPTO_SUPPORTED:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            uint8_t uuid[16];
+            data.read(uuid, sizeof(uuid));
+            reply->writeInt32(isCryptoSchemeSupported(uuid));
+            return OK;
+        }
+
+        case CREATE_PLUGIN:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            uint8_t uuid[16];
+            data.read(uuid, sizeof(uuid));
+            reply->writeInt32(createPlugin(uuid));
+            return OK;
+        }
+
+        case DESTROY_PLUGIN:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            reply->writeInt32(destroyPlugin());
+            return OK;
+        }
+
+        case OPEN_SESSION:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> sessionId;
+            status_t result = openSession(sessionId);
+            reply->writeInt32(sessionId.size());
+            reply->write(sessionId.array(), sessionId.size());
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case CLOSE_SESSION:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> sessionId;
+            uint32_t size = data.readInt32();
+            sessionId.insertAt((size_t)0, size);
+            data.read(sessionId.editArray(), size);
+            reply->writeInt32(closeSession(sessionId));
+            return OK;
+        }
+
+        case GET_LICENSE_REQUEST:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> sessionId;
+            uint32_t size = data.readInt32();
+            sessionId.insertAt((size_t)0, size);
+            data.read(sessionId.editArray(), size);
+
+            Vector<uint8_t> initData;
+            size = data.readInt32();
+            initData.insertAt((size_t)0, size);
+            data.read(initData.editArray(), size);
+
+            String8 mimeType = data.readString8();
+            DrmPlugin::LicenseType licenseType = (DrmPlugin::LicenseType)data.readInt32();
+
+            KeyedVector<String8, String8> optionalParameters;
+            uint32_t count = data.readInt32();
+            for (size_t i = 0; i < count; ++i) {
+                String8 key, value;
+                key = data.readString8();
+                value = data.readString8();
+                optionalParameters.add(key, value);
+            }
+
+            Vector<uint8_t> request;
+            String8 defaultUrl;
+
+            status_t result = getLicenseRequest(sessionId, initData,
+                                                mimeType, licenseType,
+                                                optionalParameters,
+                                                request, defaultUrl);
+            reply->writeInt32(request.size());
+            reply->write(request.array(), request.size());
+            reply->writeString8(defaultUrl);
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case PROVIDE_LICENSE_RESPONSE:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> sessionId;
+            uint32_t size = data.readInt32();
+            sessionId.insertAt((size_t)0, size);
+            data.read(sessionId.editArray(), size);
+            Vector<uint8_t> response;
+            size = data.readInt32();
+            response.insertAt((size_t)0, size);
+            data.read(response.editArray(), size);
+
+            reply->writeInt32(provideLicenseResponse(sessionId, response));
+            return OK;
+        }
+
+        case REMOVE_LICENSE:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> sessionId;
+            uint32_t size = data.readInt32();
+            sessionId.insertAt((size_t)0, size);
+            data.read(sessionId.editArray(), size);
+            reply->writeInt32(removeLicense(sessionId));
+            return OK;
+        }
+
+        case QUERY_LICENSE_STATUS:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> sessionId;
+            uint32_t size = data.readInt32();
+            sessionId.insertAt((size_t)0, size);
+            data.read(sessionId.editArray(), size);
+            KeyedVector<String8, String8> infoMap;
+
+            status_t result = queryLicenseStatus(sessionId, infoMap);
+
+            size_t count = infoMap.size();
+            reply->writeInt32(count);
+            for (size_t i = 0; i < count; ++i) {
+                reply->writeString8(infoMap.keyAt(i));
+                reply->writeString8(infoMap.valueAt(i));
+            }
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case GET_PROVISION_REQUEST:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> request;
+            String8 defaultUrl;
+            status_t result = getProvisionRequest(request, defaultUrl);
+            reply->writeInt32(request.size());
+            reply->write(request.array(), request.size());
+            reply->writeString8(defaultUrl);
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case PROVIDE_PROVISION_RESPONSE:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> response;
+            uint32_t size = data.readInt32();
+            response.insertAt((size_t)0, size);
+            data.read(response.editArray(), size);
+            reply->writeInt32(provideProvisionResponse(response));
+
+            return OK;
+        }
+
+        case GET_SECURE_STOPS:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            List<Vector<uint8_t> > secureStops;
+            status_t result = getSecureStops(secureStops);
+            size_t count = secureStops.size();
+            reply->writeInt32(count);
+            List<Vector<uint8_t> >::iterator iter = secureStops.begin();
+            while(iter != secureStops.end()) {
+                size_t size = iter->size();
+                reply->writeInt32(size);
+                reply->write(iter->array(), iter->size());
+            }
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case RELEASE_SECURE_STOPS:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            Vector<uint8_t> ssRelease;
+            uint32_t size = data.readInt32();
+            ssRelease.insertAt((size_t)0, size);
+            data.read(ssRelease.editArray(), size);
+            reply->writeInt32(releaseSecureStops(ssRelease));
+            return OK;
+        }
+
+        case GET_PROPERTY_STRING:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            String8 name = data.readString8();
+            String8 value;
+            status_t result = getPropertyString(name, value);
+            reply->writeString8(value);
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case GET_PROPERTY_BYTE_ARRAY:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            String8 name = data.readString8();
+            Vector<uint8_t> value;
+            status_t result = getPropertyByteArray(name, value);
+            reply->writeInt32(value.size());
+            reply->write(value.array(), value.size());
+            reply->writeInt32(result);
+            return OK;
+        }
+
+        case SET_PROPERTY_STRING:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            String8 name = data.readString8();
+            String8 value = data.readString8();
+            reply->writeInt32(setPropertyString(name, value));
+            return OK;
+        }
+
+        case SET_PROPERTY_BYTE_ARRAY:
+        {
+            CHECK_INTERFACE(IDrm, data, reply);
+            String8 name = data.readString8();
+            Vector<uint8_t> value;
+            size_t count = data.readInt32();
+            value.insertAt((size_t)0, count);
+            data.read(value.editArray(), count);
+            reply->writeInt32(setPropertyByteArray(name, value));
+            return OK;
+        }
+
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}  // namespace android
+
-- 
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