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android_frameworks_base/media/libmedia/IAudioPolicyService.cpp
Eric Laurent ddb78e7753 Fix issue 2001214: AudioFlinger and AudioPolicyService interfaces should not use pointers as handles to inputs and outputs. 
Use integers instead of void* as input/output handles at IAudioFlinger and IAudioPolicyService interfaces.
AudioFlinger maintains an always increasing count of opened inputs or outputs as unique ID.
2009-08-07 00:27:19 -07:00

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/*
**
** Copyright 2009, 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_TAG "IAudioPolicyService"
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <binder/Parcel.h>
#include <media/IAudioPolicyService.h>
namespace android {
enum {
SET_DEVICE_CONNECTION_STATE = IBinder::FIRST_CALL_TRANSACTION,
GET_DEVICE_CONNECTION_STATE,
SET_PHONE_STATE,
SET_RINGER_MODE,
SET_FORCE_USE,
GET_FORCE_USE,
GET_OUTPUT,
START_OUTPUT,
STOP_OUTPUT,
RELEASE_OUTPUT,
GET_INPUT,
START_INPUT,
STOP_INPUT,
RELEASE_INPUT,
INIT_STREAM_VOLUME,
SET_STREAM_VOLUME,
GET_STREAM_VOLUME
};
class BpAudioPolicyService : public BpInterface<IAudioPolicyService>
{
public:
BpAudioPolicyService(const sp<IBinder>& impl)
: BpInterface<IAudioPolicyService>(impl)
{
}
virtual status_t setDeviceConnectionState(
AudioSystem::audio_devices device,
AudioSystem::device_connection_state state,
const char *device_address)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(device));
data.writeInt32(static_cast <uint32_t>(state));
data.writeCString(device_address);
remote()->transact(SET_DEVICE_CONNECTION_STATE, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual AudioSystem::device_connection_state getDeviceConnectionState(
AudioSystem::audio_devices device,
const char *device_address)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(device));
data.writeCString(device_address);
remote()->transact(GET_DEVICE_CONNECTION_STATE, data, &reply);
return static_cast <AudioSystem::device_connection_state>(reply.readInt32());
}
virtual status_t setPhoneState(int state)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(state);
remote()->transact(SET_PHONE_STATE, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual status_t setRingerMode(uint32_t mode, uint32_t mask)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(mode);
data.writeInt32(mask);
remote()->transact(SET_RINGER_MODE, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual status_t setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(usage));
data.writeInt32(static_cast <uint32_t>(config));
remote()->transact(SET_FORCE_USE, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual AudioSystem::forced_config getForceUse(AudioSystem::force_use usage)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(usage));
remote()->transact(GET_FORCE_USE, data, &reply);
return static_cast <AudioSystem::forced_config> (reply.readInt32());
}
virtual audio_io_handle_t getOutput(
AudioSystem::stream_type stream,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::output_flags flags)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(stream));
data.writeInt32(samplingRate);
data.writeInt32(static_cast <uint32_t>(format));
data.writeInt32(channels);
data.writeInt32(static_cast <uint32_t>(flags));
remote()->transact(GET_OUTPUT, data, &reply);
return static_cast <audio_io_handle_t> (reply.readInt32());
}
virtual status_t startOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(output);
data.writeInt32(stream);
remote()->transact(START_OUTPUT, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual status_t stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(output);
data.writeInt32(stream);
remote()->transact(STOP_OUTPUT, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual void releaseOutput(audio_io_handle_t output)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(output);
remote()->transact(RELEASE_OUTPUT, data, &reply);
}
virtual audio_io_handle_t getInput(
int inputSource,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::audio_in_acoustics acoustics)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(inputSource);
data.writeInt32(samplingRate);
data.writeInt32(static_cast <uint32_t>(format));
data.writeInt32(channels);
data.writeInt32(static_cast <uint32_t>(acoustics));
remote()->transact(GET_INPUT, data, &reply);
return static_cast <audio_io_handle_t> (reply.readInt32());
}
virtual status_t startInput(audio_io_handle_t input)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(input);
remote()->transact(START_INPUT, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual status_t stopInput(audio_io_handle_t input)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(input);
remote()->transact(STOP_INPUT, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual void releaseInput(audio_io_handle_t input)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(input);
remote()->transact(RELEASE_INPUT, data, &reply);
}
virtual status_t initStreamVolume(AudioSystem::stream_type stream,
int indexMin,
int indexMax)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(stream));
data.writeInt32(indexMin);
data.writeInt32(indexMax);
remote()->transact(INIT_STREAM_VOLUME, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual status_t setStreamVolumeIndex(AudioSystem::stream_type stream, int index)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(stream));
data.writeInt32(index);
remote()->transact(SET_STREAM_VOLUME, data, &reply);
return static_cast <status_t> (reply.readInt32());
}
virtual status_t getStreamVolumeIndex(AudioSystem::stream_type stream, int *index)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
data.writeInt32(static_cast <uint32_t>(stream));
remote()->transact(GET_STREAM_VOLUME, data, &reply);
int lIndex = reply.readInt32();
if (index) *index = lIndex;
return static_cast <status_t> (reply.readInt32());
}
};
IMPLEMENT_META_INTERFACE(AudioPolicyService, "android.media.IAudioPolicyService");
// ----------------------------------------------------------------------
status_t BnAudioPolicyService::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case SET_DEVICE_CONNECTION_STATE: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::audio_devices device = static_cast <AudioSystem::audio_devices>(data.readInt32());
AudioSystem::device_connection_state state = static_cast <AudioSystem::device_connection_state>(data.readInt32());
const char *device_address = data.readCString();
reply->writeInt32(static_cast <uint32_t>(setDeviceConnectionState(device, state, device_address)));
return NO_ERROR;
} break;
case GET_DEVICE_CONNECTION_STATE: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::audio_devices device = static_cast <AudioSystem::audio_devices>(data.readInt32());
const char *device_address = data.readCString();
reply->writeInt32(static_cast <uint32_t>(getDeviceConnectionState(device, device_address)));
return NO_ERROR;
} break;
case SET_PHONE_STATE: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
reply->writeInt32(static_cast <uint32_t>(setPhoneState(data.readInt32())));
return NO_ERROR;
} break;
case SET_RINGER_MODE: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
uint32_t mode = data.readInt32();
uint32_t mask = data.readInt32();
reply->writeInt32(static_cast <uint32_t>(setRingerMode(mode, mask)));
return NO_ERROR;
} break;
case SET_FORCE_USE: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::force_use usage = static_cast <AudioSystem::force_use>(data.readInt32());
AudioSystem::forced_config config = static_cast <AudioSystem::forced_config>(data.readInt32());
reply->writeInt32(static_cast <uint32_t>(setForceUse(usage, config)));
return NO_ERROR;
} break;
case GET_FORCE_USE: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::force_use usage = static_cast <AudioSystem::force_use>(data.readInt32());
reply->writeInt32(static_cast <uint32_t>(getForceUse(usage)));
return NO_ERROR;
} break;
case GET_OUTPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::stream_type stream = static_cast <AudioSystem::stream_type>(data.readInt32());
uint32_t samplingRate = data.readInt32();
uint32_t format = data.readInt32();
uint32_t channels = data.readInt32();
AudioSystem::output_flags flags = static_cast <AudioSystem::output_flags>(data.readInt32());
audio_io_handle_t output = getOutput(stream,
samplingRate,
format,
channels,
flags);
reply->writeInt32(static_cast <int>(output));
return NO_ERROR;
} break;
case START_OUTPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t output = static_cast <audio_io_handle_t>(data.readInt32());
uint32_t stream = data.readInt32();
reply->writeInt32(static_cast <uint32_t>(startOutput(output, (AudioSystem::stream_type)stream)));
return NO_ERROR;
} break;
case STOP_OUTPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t output = static_cast <audio_io_handle_t>(data.readInt32());
uint32_t stream = data.readInt32();
reply->writeInt32(static_cast <uint32_t>(stopOutput(output, (AudioSystem::stream_type)stream)));
return NO_ERROR;
} break;
case RELEASE_OUTPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t output = static_cast <audio_io_handle_t>(data.readInt32());
releaseOutput(output);
return NO_ERROR;
} break;
case GET_INPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
int inputSource = data.readInt32();
uint32_t samplingRate = data.readInt32();
uint32_t format = data.readInt32();
uint32_t channels = data.readInt32();
AudioSystem::audio_in_acoustics acoustics = static_cast <AudioSystem::audio_in_acoustics>(data.readInt32());
audio_io_handle_t input = getInput(inputSource,
samplingRate,
format,
channels,
acoustics);
reply->writeInt32(static_cast <int>(input));
return NO_ERROR;
} break;
case START_INPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t input = static_cast <audio_io_handle_t>(data.readInt32());
reply->writeInt32(static_cast <uint32_t>(startInput(input)));
return NO_ERROR;
} break;
case STOP_INPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t input = static_cast <audio_io_handle_t>(data.readInt32());
reply->writeInt32(static_cast <uint32_t>(stopInput(input)));
return NO_ERROR;
} break;
case RELEASE_INPUT: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
audio_io_handle_t input = static_cast <audio_io_handle_t>(data.readInt32());
releaseInput(input);
return NO_ERROR;
} break;
case INIT_STREAM_VOLUME: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::stream_type stream = static_cast <AudioSystem::stream_type>(data.readInt32());
int indexMin = data.readInt32();
int indexMax = data.readInt32();
reply->writeInt32(static_cast <uint32_t>(initStreamVolume(stream, indexMin,indexMax)));
return NO_ERROR;
} break;
case SET_STREAM_VOLUME: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::stream_type stream = static_cast <AudioSystem::stream_type>(data.readInt32());
int index = data.readInt32();
reply->writeInt32(static_cast <uint32_t>(setStreamVolumeIndex(stream, index)));
return NO_ERROR;
} break;
case GET_STREAM_VOLUME: {
CHECK_INTERFACE(IAudioPolicyService, data, reply);
AudioSystem::stream_type stream = static_cast <AudioSystem::stream_type>(data.readInt32());
int index;
status_t status = getStreamVolumeIndex(stream, &index);
reply->writeInt32(index);
reply->writeInt32(static_cast <uint32_t>(status));
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
// ----------------------------------------------------------------------------
}; // namespace android
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