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/*
* Copyright (C) 2012 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 "IHDCP"
#include <utils/Log.h>
#include <binder/Parcel.h>
#include <media/IHDCP.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/foundation/ADebug.h>
namespace android {
enum {
OBSERVER_NOTIFY = IBinder::FIRST_CALL_TRANSACTION,
HDCP_SET_OBSERVER,
HDCP_INIT_ASYNC,
HDCP_SHUTDOWN_ASYNC,
HDCP_ENCRYPT,
};
struct BpHDCPObserver : public BpInterface<IHDCPObserver> {
BpHDCPObserver(const sp<IBinder> &impl)
: BpInterface<IHDCPObserver>(impl) {
}
virtual void notify(
int msg, int ext1, int ext2, const Parcel *obj) {
Parcel data, reply;
data.writeInterfaceToken(IHDCPObserver::getInterfaceDescriptor());
data.writeInt32(msg);
data.writeInt32(ext1);
data.writeInt32(ext2);
if (obj && obj->dataSize() > 0) {
data.appendFrom(const_cast<Parcel *>(obj), 0, obj->dataSize());
}
remote()->transact(OBSERVER_NOTIFY, data, &reply, IBinder::FLAG_ONEWAY);
}
};
IMPLEMENT_META_INTERFACE(HDCPObserver, "android.hardware.IHDCPObserver");
struct BpHDCP : public BpInterface<IHDCP> {
BpHDCP(const sp<IBinder> &impl)
: BpInterface<IHDCP>(impl) {
}
virtual status_t setObserver(const sp<IHDCPObserver> &observer) {
Parcel data, reply;
data.writeInterfaceToken(IHDCP::getInterfaceDescriptor());
data.writeStrongBinder(observer->asBinder());
remote()->transact(HDCP_SET_OBSERVER, data, &reply);
return reply.readInt32();
}
virtual status_t initAsync(const char *host, unsigned port) {
Parcel data, reply;
data.writeInterfaceToken(IHDCP::getInterfaceDescriptor());
data.writeCString(host);
data.writeInt32(port);
remote()->transact(HDCP_INIT_ASYNC, data, &reply);
return reply.readInt32();
}
virtual status_t shutdownAsync() {
Parcel data, reply;
data.writeInterfaceToken(IHDCP::getInterfaceDescriptor());
remote()->transact(HDCP_SHUTDOWN_ASYNC, data, &reply);
return reply.readInt32();
}
virtual status_t encrypt(
const void *inData, size_t size, uint32_t streamCTR,
uint64_t *outInputCTR, void *outData) {
Parcel data, reply;
data.writeInterfaceToken(IHDCP::getInterfaceDescriptor());
data.writeInt32(size);
data.write(inData, size);
data.writeInt32(streamCTR);
remote()->transact(HDCP_ENCRYPT, data, &reply);
status_t err = reply.readInt32();
if (err != OK) {
*outInputCTR = 0;
return err;
}
*outInputCTR = reply.readInt64();
reply.read(outData, size);
return err;
}
};
IMPLEMENT_META_INTERFACE(HDCP, "android.hardware.IHDCP");
status_t BnHDCPObserver::onTransact(
uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
switch (code) {
case OBSERVER_NOTIFY:
{
CHECK_INTERFACE(IHDCPObserver, data, reply);
int msg = data.readInt32();
int ext1 = data.readInt32();
int ext2 = data.readInt32();
Parcel obj;
if (data.dataAvail() > 0) {
obj.appendFrom(
const_cast<Parcel *>(&data),
data.dataPosition(),
data.dataAvail());
}
notify(msg, ext1, ext2, &obj);
return OK;
}
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
status_t BnHDCP::onTransact(
uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
switch (code) {
case HDCP_SET_OBSERVER:
{
CHECK_INTERFACE(IHDCP, data, reply);
sp<IHDCPObserver> observer =
interface_cast<IHDCPObserver>(data.readStrongBinder());
reply->writeInt32(setObserver(observer));
return OK;
}
case HDCP_INIT_ASYNC:
{
CHECK_INTERFACE(IHDCP, data, reply);
const char *host = data.readCString();
unsigned port = data.readInt32();
reply->writeInt32(initAsync(host, port));
return OK;
}
case HDCP_SHUTDOWN_ASYNC:
{
CHECK_INTERFACE(IHDCP, data, reply);
reply->writeInt32(shutdownAsync());
return OK;
}
case HDCP_ENCRYPT:
{
size_t size = data.readInt32();
void *inData = malloc(2 * size);
void *outData = (uint8_t *)inData + size;
data.read(inData, size);
uint32_t streamCTR = data.readInt32();
uint64_t inputCTR;
status_t err = encrypt(inData, size, streamCTR, &inputCTR, outData);
reply->writeInt32(err);
if (err == OK) {
reply->writeInt64(inputCTR);
reply->write(outData, size);
}
free(inData);
inData = outData = NULL;
return OK;
}
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
} // namespace android
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