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/*
**
** Copyright 2007, 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 "IAudioTrack"
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <stdint.h>
#include <sys/types.h>
#include <binder/Parcel.h>
#include <media/IAudioTrack.h>
namespace android {
enum {
GET_CBLK = IBinder::FIRST_CALL_TRANSACTION,
START,
STOP,
FLUSH,
RESERVED, // was MUTE
PAUSE,
ATTACH_AUX_EFFECT,
ALLOCATE_TIMED_BUFFER,
QUEUE_TIMED_BUFFER,
SET_MEDIA_TIME_TRANSFORM,
SET_PARAMETERS,
GET_TIMESTAMP,
SIGNAL,
};
class BpAudioTrack : public BpInterface<IAudioTrack>
{
public:
BpAudioTrack(const sp<IBinder>& impl)
: BpInterface<IAudioTrack>(impl)
{
}
virtual sp<IMemory> getCblk() const
{
Parcel data, reply;
sp<IMemory> cblk;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
status_t status = remote()->transact(GET_CBLK, data, &reply);
if (status == NO_ERROR) {
cblk = interface_cast<IMemory>(reply.readStrongBinder());
if (cblk != 0 && cblk->pointer() == NULL) {
cblk.clear();
}
}
return cblk;
}
virtual status_t start()
{
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
status_t status = remote()->transact(START, data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
} else {
ALOGW("start() error: %s", strerror(-status));
}
return status;
}
virtual void stop()
{
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
remote()->transact(STOP, data, &reply);
}
virtual void flush()
{
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
remote()->transact(FLUSH, data, &reply);
}
virtual void pause()
{
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
remote()->transact(PAUSE, data, &reply);
}
virtual status_t attachAuxEffect(int effectId)
{
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
data.writeInt32(effectId);
status_t status = remote()->transact(ATTACH_AUX_EFFECT, data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
} else {
ALOGW("attachAuxEffect() error: %s", strerror(-status));
}
return status;
}
virtual status_t allocateTimedBuffer(size_t size, sp<IMemory>* buffer) {
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
data.writeInt64(size);
status_t status = remote()->transact(ALLOCATE_TIMED_BUFFER,
data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
if (status == NO_ERROR) {
*buffer = interface_cast<IMemory>(reply.readStrongBinder());
if (*buffer != 0 && (*buffer)->pointer() == NULL) {
(*buffer).clear();
}
}
}
return status;
}
virtual status_t queueTimedBuffer(const sp<IMemory>& buffer,
int64_t pts) {
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
data.writeStrongBinder(buffer->asBinder());
data.writeInt64(pts);
status_t status = remote()->transact(QUEUE_TIMED_BUFFER,
data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
}
return status;
}
virtual status_t setMediaTimeTransform(const LinearTransform& xform,
int target) {
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
data.writeInt64(xform.a_zero);
data.writeInt64(xform.b_zero);
data.writeInt32(xform.a_to_b_numer);
data.writeInt32(xform.a_to_b_denom);
data.writeInt32(target);
status_t status = remote()->transact(SET_MEDIA_TIME_TRANSFORM,
data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
}
return status;
}
virtual status_t setParameters(const String8& keyValuePairs) {
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
data.writeString8(keyValuePairs);
status_t status = remote()->transact(SET_PARAMETERS, data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
}
return status;
}
virtual status_t getTimestamp(AudioTimestamp& timestamp) {
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
status_t status = remote()->transact(GET_TIMESTAMP, data, &reply);
if (status == NO_ERROR) {
status = reply.readInt32();
if (status == NO_ERROR) {
timestamp.mPosition = reply.readInt32();
timestamp.mTime.tv_sec = reply.readInt32();
timestamp.mTime.tv_nsec = reply.readInt32();
}
}
return status;
}
virtual void signal() {
Parcel data, reply;
data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor());
remote()->transact(SIGNAL, data, &reply);
}
};
IMPLEMENT_META_INTERFACE(AudioTrack, "android.media.IAudioTrack");
// ----------------------------------------------------------------------
status_t BnAudioTrack::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch (code) {
case GET_CBLK: {
CHECK_INTERFACE(IAudioTrack, data, reply);
reply->writeStrongBinder(getCblk()->asBinder());
return NO_ERROR;
} break;
case START: {
CHECK_INTERFACE(IAudioTrack, data, reply);
reply->writeInt32(start());
return NO_ERROR;
} break;
case STOP: {
CHECK_INTERFACE(IAudioTrack, data, reply);
stop();
return NO_ERROR;
} break;
case FLUSH: {
CHECK_INTERFACE(IAudioTrack, data, reply);
flush();
return NO_ERROR;
} break;
case PAUSE: {
CHECK_INTERFACE(IAudioTrack, data, reply);
pause();
return NO_ERROR;
}
case ATTACH_AUX_EFFECT: {
CHECK_INTERFACE(IAudioTrack, data, reply);
reply->writeInt32(attachAuxEffect(data.readInt32()));
return NO_ERROR;
} break;
case ALLOCATE_TIMED_BUFFER: {
CHECK_INTERFACE(IAudioTrack, data, reply);
sp<IMemory> buffer;
status_t status = allocateTimedBuffer(data.readInt64(), &buffer);
reply->writeInt32(status);
if (status == NO_ERROR) {
reply->writeStrongBinder(buffer->asBinder());
}
return NO_ERROR;
} break;
case QUEUE_TIMED_BUFFER: {
CHECK_INTERFACE(IAudioTrack, data, reply);
sp<IMemory> buffer = interface_cast<IMemory>(
data.readStrongBinder());
uint64_t pts = data.readInt64();
reply->writeInt32(queueTimedBuffer(buffer, pts));
return NO_ERROR;
} break;
case SET_MEDIA_TIME_TRANSFORM: {
CHECK_INTERFACE(IAudioTrack, data, reply);
LinearTransform xform;
xform.a_zero = data.readInt64();
xform.b_zero = data.readInt64();
xform.a_to_b_numer = data.readInt32();
xform.a_to_b_denom = data.readInt32();
int target = data.readInt32();
reply->writeInt32(setMediaTimeTransform(xform, target));
return NO_ERROR;
} break;
case SET_PARAMETERS: {
CHECK_INTERFACE(IAudioTrack, data, reply);
String8 keyValuePairs(data.readString8());
reply->writeInt32(setParameters(keyValuePairs));
return NO_ERROR;
} break;
case GET_TIMESTAMP: {
CHECK_INTERFACE(IAudioTrack, data, reply);
AudioTimestamp timestamp;
status_t status = getTimestamp(timestamp);
reply->writeInt32(status);
if (status == NO_ERROR) {
reply->writeInt32(timestamp.mPosition);
reply->writeInt32(timestamp.mTime.tv_sec);
reply->writeInt32(timestamp.mTime.tv_nsec);
}
return NO_ERROR;
} break;
case SIGNAL: {
CHECK_INTERFACE(IAudioTrack, data, reply);
signal();
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
}; // namespace android
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