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812ed0644f
replicant-frameworks_native/libs/gui/IGraphicBufferProducer.cpp
Dan Stoza 812ed0644f libgui: Add generation numbers to BufferQueue 
This change allows producers to set a generation number on a
BufferQueue. This number will be embedded in any new GraphicBuffers
created in that BufferQueue, and attempts to attach buffers which have
a different generation number will fail.

It also plumbs the setGenerationNumber method through Surface, with the
additional effect that any buffers attached to the Surface after
setting a new generation number will automatically be updated with the
new number (as opposed to failing, as would happen on through IGBP).

Bug: 20923096
Change-Id: I32bf726b035f99c3e5834beaf76afb9f01adcbc2
2015-06-03 11:09:33 -07:00

553 lines
19 KiB
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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/NativeHandle.h>
#include <utils/RefBase.h>
#include <utils/Timers.h>
#include <utils/Vector.h>
#include <binder/Parcel.h>
#include <binder/IInterface.h>
#include <gui/IGraphicBufferProducer.h>
#include <gui/IProducerListener.h>
namespace android {
// ----------------------------------------------------------------------------
enum {
REQUEST_BUFFER = IBinder::FIRST_CALL_TRANSACTION,
SET_BUFFER_COUNT,
DEQUEUE_BUFFER,
DETACH_BUFFER,
DETACH_NEXT_BUFFER,
ATTACH_BUFFER,
QUEUE_BUFFER,
CANCEL_BUFFER,
QUERY,
CONNECT,
DISCONNECT,
SET_SIDEBAND_STREAM,
ALLOCATE_BUFFERS,
ALLOW_ALLOCATION,
SET_GENERATION_NUMBER,
};
class BpGraphicBufferProducer : public BpInterface<IGraphicBufferProducer>
{
public:
BpGraphicBufferProducer(const sp<IBinder>& impl)
: BpInterface<IGraphicBufferProducer>(impl)
{
}
virtual ~BpGraphicBufferProducer();
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();
result = reply.read(**buf);
if(result != NO_ERROR) {
(*buf).clear();
return result;
}
}
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, bool async,
uint32_t width, uint32_t height, PixelFormat format,
uint32_t usage) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(static_cast<int32_t>(async));
data.writeUint32(width);
data.writeUint32(height);
data.writeInt32(static_cast<int32_t>(format));
data.writeUint32(usage);
status_t result = remote()->transact(DEQUEUE_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
*buf = reply.readInt32();
bool nonNull = reply.readInt32();
if (nonNull) {
*fence = new Fence();
reply.read(**fence);
}
result = reply.readInt32();
return result;
}
virtual status_t detachBuffer(int slot) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(slot);
status_t result = remote()->transact(DETACH_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readInt32();
return result;
}
virtual status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer,
sp<Fence>* outFence) {
if (outBuffer == NULL) {
ALOGE("detachNextBuffer: outBuffer must not be NULL");
return BAD_VALUE;
} else if (outFence == NULL) {
ALOGE("detachNextBuffer: outFence must not be NULL");
return BAD_VALUE;
}
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
status_t result = remote()->transact(DETACH_NEXT_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readInt32();
if (result == NO_ERROR) {
bool nonNull = reply.readInt32();
if (nonNull) {
*outBuffer = new GraphicBuffer;
reply.read(**outBuffer);
}
nonNull = reply.readInt32();
if (nonNull) {
*outFence = new Fence;
reply.read(**outFence);
}
}
return result;
}
virtual status_t attachBuffer(int* slot, const sp<GraphicBuffer>& buffer) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.write(*buffer.get());
status_t result = remote()->transact(ATTACH_BUFFER, data, &reply);
if (result != NO_ERROR) {
return result;
}
*slot = reply.readInt32();
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, const 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 connect(const sp<IProducerListener>& listener,
int api, bool producerControlledByApp, QueueBufferOutput* output) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
if (listener != NULL) {
data.writeInt32(1);
data.writeStrongBinder(IInterface::asBinder(listener));
} else {
data.writeInt32(0);
}
data.writeInt32(api);
data.writeInt32(producerControlledByApp);
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;
}
virtual status_t setSidebandStream(const sp<NativeHandle>& stream) {
Parcel data, reply;
status_t result;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
if (stream.get()) {
data.writeInt32(true);
data.writeNativeHandle(stream->handle());
} else {
data.writeInt32(false);
}
if ((result = remote()->transact(SET_SIDEBAND_STREAM, data, &reply)) == NO_ERROR) {
result = reply.readInt32();
}
return result;
}
virtual void allocateBuffers(bool async, uint32_t width, uint32_t height,
PixelFormat format, uint32_t usage) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(static_cast<int32_t>(async));
data.writeUint32(width);
data.writeUint32(height);
data.writeInt32(static_cast<int32_t>(format));
data.writeUint32(usage);
status_t result = remote()->transact(ALLOCATE_BUFFERS, data, &reply);
if (result != NO_ERROR) {
ALOGE("allocateBuffers failed to transact: %d", result);
}
}
virtual status_t allowAllocation(bool allow) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeInt32(static_cast<int32_t>(allow));
status_t result = remote()->transact(ALLOW_ALLOCATION, data, &reply);
if (result != NO_ERROR) {
return result;
}
result = reply.readInt32();
return result;
}
virtual status_t setGenerationNumber(uint32_t generationNumber) {
Parcel data, reply;
data.writeInterfaceToken(IGraphicBufferProducer::getInterfaceDescriptor());
data.writeUint32(generationNumber);
status_t result = remote()->transact(SET_GENERATION_NUMBER, data, &reply);
if (result == NO_ERROR) {
result = reply.readInt32();
}
return result;
}
};
// Out-of-line virtual method definition to trigger vtable emission in this
// translation unit (see clang warning -Wweak-vtables)
BpGraphicBufferProducer::~BpGraphicBufferProducer() {}
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;
}
case SET_BUFFER_COUNT: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int bufferCount = data.readInt32();
int result = setBufferCount(bufferCount);
reply->writeInt32(result);
return NO_ERROR;
}
case DEQUEUE_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
bool async = static_cast<bool>(data.readInt32());
uint32_t width = data.readUint32();
uint32_t height = data.readUint32();
PixelFormat format = static_cast<PixelFormat>(data.readInt32());
uint32_t usage = data.readUint32();
int buf;
sp<Fence> fence;
int result = dequeueBuffer(&buf, &fence, async, width, height,
format, usage);
reply->writeInt32(buf);
reply->writeInt32(fence != NULL);
if (fence != NULL) {
reply->write(*fence);
}
reply->writeInt32(result);
return NO_ERROR;
}
case DETACH_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int slot = data.readInt32();
int result = detachBuffer(slot);
reply->writeInt32(result);
return NO_ERROR;
}
case DETACH_NEXT_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
sp<GraphicBuffer> buffer;
sp<Fence> fence;
int32_t result = detachNextBuffer(&buffer, &fence);
reply->writeInt32(result);
if (result == NO_ERROR) {
reply->writeInt32(buffer != NULL);
if (buffer != NULL) {
reply->write(*buffer);
}
reply->writeInt32(fence != NULL);
if (fence != NULL) {
reply->write(*fence);
}
}
return NO_ERROR;
}
case ATTACH_BUFFER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
sp<GraphicBuffer> buffer = new GraphicBuffer();
data.read(*buffer.get());
int slot;
int result = attachBuffer(&slot, buffer);
reply->writeInt32(slot);
reply->writeInt32(result);
return NO_ERROR;
}
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;
}
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;
}
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;
}
case CONNECT: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
sp<IProducerListener> listener;
if (data.readInt32() == 1) {
listener = IProducerListener::asInterface(data.readStrongBinder());
}
int api = data.readInt32();
bool producerControlledByApp = data.readInt32();
QueueBufferOutput* const output =
reinterpret_cast<QueueBufferOutput *>(
reply->writeInplace(sizeof(QueueBufferOutput)));
status_t res = connect(listener, api, producerControlledByApp, output);
reply->writeInt32(res);
return NO_ERROR;
}
case DISCONNECT: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
int api = data.readInt32();
status_t res = disconnect(api);
reply->writeInt32(res);
return NO_ERROR;
}
case SET_SIDEBAND_STREAM: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
sp<NativeHandle> stream;
if (data.readInt32()) {
stream = NativeHandle::create(data.readNativeHandle(), true);
}
status_t result = setSidebandStream(stream);
reply->writeInt32(result);
return NO_ERROR;
}
case ALLOCATE_BUFFERS: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
bool async = static_cast<bool>(data.readInt32());
uint32_t width = data.readUint32();
uint32_t height = data.readUint32();
PixelFormat format = static_cast<PixelFormat>(data.readInt32());
uint32_t usage = data.readUint32();
allocateBuffers(async, width, height, format, usage);
return NO_ERROR;
}
case ALLOW_ALLOCATION: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
bool allow = static_cast<bool>(data.readInt32());
status_t result = allowAllocation(allow);
reply->writeInt32(result);
return NO_ERROR;
}
case SET_GENERATION_NUMBER: {
CHECK_INTERFACE(IGraphicBufferProducer, data, reply);
uint32_t generationNumber = data.readUint32();
status_t result = setGenerationNumber(generationNumber);
reply->writeInt32(result);
return NO_ERROR;
}
}
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(isAutoTimestamp)
+ sizeof(dataSpace)
+ sizeof(crop)
+ sizeof(scalingMode)
+ sizeof(transform)
+ sizeof(stickyTransform)
+ sizeof(async)
+ fence->getFlattenedSize()
+ surfaceDamage.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
{
if (size < getFlattenedSize()) {
return NO_MEMORY;
}
FlattenableUtils::write(buffer, size, timestamp);
FlattenableUtils::write(buffer, size, isAutoTimestamp);
FlattenableUtils::write(buffer, size, dataSpace);
FlattenableUtils::write(buffer, size, crop);
FlattenableUtils::write(buffer, size, scalingMode);
FlattenableUtils::write(buffer, size, transform);
FlattenableUtils::write(buffer, size, stickyTransform);
FlattenableUtils::write(buffer, size, async);
status_t result = fence->flatten(buffer, size, fds, count);
if (result != NO_ERROR) {
return result;
}
return surfaceDamage.flatten(buffer, size);
}
status_t IGraphicBufferProducer::QueueBufferInput::unflatten(
void const*& buffer, size_t& size, int const*& fds, size_t& count)
{
size_t minNeeded =
sizeof(timestamp)
+ sizeof(isAutoTimestamp)
+ sizeof(dataSpace)
+ sizeof(crop)
+ sizeof(scalingMode)
+ sizeof(transform)
+ sizeof(stickyTransform)
+ sizeof(async);
if (size < minNeeded) {
return NO_MEMORY;
}
FlattenableUtils::read(buffer, size, timestamp);
FlattenableUtils::read(buffer, size, isAutoTimestamp);
FlattenableUtils::read(buffer, size, dataSpace);
FlattenableUtils::read(buffer, size, crop);
FlattenableUtils::read(buffer, size, scalingMode);
FlattenableUtils::read(buffer, size, transform);
FlattenableUtils::read(buffer, size, stickyTransform);
FlattenableUtils::read(buffer, size, async);
fence = new Fence();
status_t result = fence->unflatten(buffer, size, fds, count);
if (result != NO_ERROR) {
return result;
}
return surfaceDamage.unflatten(buffer, size);
}
}; // namespace android
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