replicant-frameworks_native/libs/gui/IGraphicBufferProducer.cpp

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/*
* Copyright (C) 2010 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.
*/
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/RefBase.h>
#include <utils/Vector.h>
#include <utils/Timers.h>
#include <binder/Parcel.h>
#include <binder/IInterface.h>
#include <gui/IGraphicBufferProducer.h>
namespace android {
// ----------------------------------------------------------------------------
enum {
REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION,
SET_BUFFER_COUNT,
DEQUEUE_BUFFER,
QUEUE_BUFFER,
CANCEL_BUFFER,
QUERY,
SET_SYNCHRONOUS_MODE,
CONNECT,
DISCONNECT,
};
class BpGraphicBufferProducer : public BpInterface<IGraphicBufferProducer>
{
public:
BpGraphicBufferProducer(const sp<IBinder>& impl)
: BpInterface<IGraphicBufferProducer>(impl)
{
}
virtual status_t requestBuffer(int bufferIdx, sp<GraphicBuffer>* buf) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(bufferIdx);
status_t result =remote()->transact(REQUEST_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
bool nonNull = reply.readInt32();
if (nonNull) {
*buf = new GraphicBuffer();
reply.read(**buf);
}
result = reply.readInt32();
return result;
}
virtual status_t setBufferCount(int bufferCount)
{
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(bufferCount);
status_t result =remote()->transact(SET_BUFFER_COUNT, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readInt32();
return result;
}
virtual status_t dequeueBuffer(int *buf, sp<Fence>& fence,
uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(w);
data.writeInt32(h);
data.writeInt32(format);
data.writeInt32(usage);
status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
*buf = reply.readInt32();
bool fenceWasWritten = reply.readInt32();
if (fenceWasWritten) {
// If the fence was written by the callee, then overwrite the
// caller's fence here. If it wasn't written then don't touch the
// caller's fence.
fence = new Fence();
reply.read(*fence.get());
}
result = reply.readInt32();
return result;
}
virtual status_t queueBuffer(int buf,
const QueueBufferInput& input, QueueBufferOutput* output) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(buf);
data.write(input);
status_t result = remote()->transact(QUEUE_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output));
result = reply.readInt32();
return result;
}
virtual void cancelBuffer(int buf, sp<Fence> fence) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(buf);
data.write(*fence.get());
remote()->transact(CANCEL_BUFFER, data, &reply);
}
virtual int query(int what, int* value) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(what);
status_t result = remote()->transact(QUERY, data, &reply);
if (result != NO_ERROR) {
return result;
}
value[0] = reply.readInt32();
result = reply.readInt32();
return result;
}
virtual status_t setSynchronousMode(bool enabled) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(enabled);
status_t result = remote()->transact(SET_SYNCHRONOUS_MODE, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readInt32();
return result;
}
virtual status_t connect(int api, QueueBufferOutput* output) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(api);
status_t result = remote()->transact(CONNECT, data, &reply);
if (result != NO_ERROR) {
return result;
}
memcpy(output, reply.readInplace(sizeof(*output)), sizeof(*output));
result = reply.readInt32();
return result;
}
virtual status_t disconnect(int api) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(api);
status_t result =remote()->transact(DISCONNECT, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readInt32();
return result;
}
};
IMPLEMENT_META_INTERFACE(GraphicBufferProducer, "android.gui.IGraphicBufferProducer");
// ----------------------------------------------------------------------
status_t BnGraphicBufferProducer::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case REQUEST_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int bufferIdx = data.readInt32();
sp<GraphicBuffer> buffer;
int result = requestBuffer(bufferIdx, &buffer);
reply->writeInt32(buffer != 0);
if (buffer != 0) {
reply->write(*buffer);
}
reply->writeInt32(result);
return NO_ERROR;
} break;
case SET_BUFFER_COUNT: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int bufferCount = data.readInt32();
int result = setBufferCount(bufferCount);
reply->writeInt32(result);
return NO_ERROR;
} break;
case DEQUEUE_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
uint32_t w = data.readInt32();
uint32_t h = data.readInt32();
uint32_t format = data.readInt32();
uint32_t usage = data.readInt32();
int buf;
sp<Fence> fence;
int result = dequeueBuffer(&buf, fence, w, h, format, usage);
reply->writeInt32(buf);
reply->writeInt32(fence != NULL);
if (fence != NULL) {
reply->write(*fence.get());
}
reply->writeInt32(result);
return NO_ERROR;
} break;
case QUEUE_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int buf = data.readInt32();
QueueBufferInput input(data);
QueueBufferOutput* const output =
reinterpret_cast<QueueBufferOutput *>(
reply->writeInplace(sizeof(QueueBufferOutput)));
status_t result = queueBuffer(buf, input, output);
reply->writeInt32(result);
return NO_ERROR;
} break;
case CANCEL_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int buf = data.readInt32();
sp<Fence> fence = new Fence();
data.read(*fence.get());
cancelBuffer(buf, fence);
return NO_ERROR;
} break;
case QUERY: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int value;
int what = data.readInt32();
int res = query(what, &value);
reply->writeInt32(value);
reply->writeInt32(res);
return NO_ERROR;
} break;
case SET_SYNCHRONOUS_MODE: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
bool enabled = data.readInt32();
status_t res = setSynchronousMode(enabled);
reply->writeInt32(res);
return NO_ERROR;
} break;
case CONNECT: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int api = data.readInt32();
QueueBufferOutput* const output =
reinterpret_cast<QueueBufferOutput *>(
reply->writeInplace(sizeof(QueueBufferOutput)));
status_t res = connect(api, output);
reply->writeInt32(res);
return NO_ERROR;
} break;
case DISCONNECT: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int api = data.readInt32();
status_t res = disconnect(api);
reply->writeInt32(res);
return NO_ERROR;
} break;
}
return BBinder::onTransact(code, data, reply, flags);
}
// ----------------------------------------------------------------------------
IGraphicBufferProducer::QueueBufferInput::QueueBufferInput(const Parcel& parcel) {
parcel.read(*this);
}
size_t IGraphicBufferProducer::QueueBufferInput::getFlattenedSize() const
{
return sizeof(timestamp)
+ sizeof(crop)
+ sizeof(scalingMode)
+ sizeof(transform)
+ fence->getFlattenedSize();
}
size_t IGraphicBufferProducer::QueueBufferInput::getFdCount() const
{
return fence->getFdCount();
}
status_t IGraphicBufferProducer::QueueBufferInput::flatten(void* buffer, size_t size,
int fds[], size_t count) const
{
status_t err = NO_ERROR;
char* p = (char*)buffer;
memcpy(p, &timestamp, sizeof(timestamp)); p += sizeof(timestamp);
memcpy(p, &crop, sizeof(crop)); p += sizeof(crop);
memcpy(p, &scalingMode, sizeof(scalingMode)); p += sizeof(scalingMode);
memcpy(p, &transform, sizeof(transform)); p += sizeof(transform);
err = fence->flatten(p, size - (p - (char*)buffer), fds, count);
return err;
}
status_t IGraphicBufferProducer::QueueBufferInput::unflatten(void const* buffer,
size_t size, int fds[], size_t count)
{
status_t err = NO_ERROR;
const char* p = (const char*)buffer;
memcpy(&timestamp, p, sizeof(timestamp)); p += sizeof(timestamp);
memcpy(&crop, p, sizeof(crop)); p += sizeof(crop);
memcpy(&scalingMode, p, sizeof(scalingMode)); p += sizeof(scalingMode);
memcpy(&transform, p, sizeof(transform)); p += sizeof(transform);
fence = new Fence();
err = fence->unflatten(p, size - (p - (const char*)buffer), fds, count);
return err;
}
}; // namespace android