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// Copyright (C) 2018 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 "VulkanStreamGuest.h"
#include "IOStream.h"
#include "ResourceTracker.h"
#include "android/base/Pool.h"
#include "android/base/Tracing.h"
#include <vector>
#include <log/log.h>
#include <inttypes.h>
namespace goldfish_vk {
class VulkanStreamGuest::Impl : public android::base::Stream {
public:
Impl(IOStream* stream) : mStream(stream) {
unsetHandleMapping();
mFeatureBits = ResourceTracker::get()->getStreamFeatures();
}
~Impl() { }
bool valid() { return true; }
void alloc(void **ptrAddr, size_t bytes) {
if (!bytes) {
*ptrAddr = nullptr;
return;
}
*ptrAddr = mPool.alloc(bytes);
}
ssize_t write(const void *buffer, size_t size) override {
uint8_t* streamBuf = (uint8_t*)mStream->alloc(size);
memcpy(streamBuf, buffer, size);
return size;
}
ssize_t read(void *buffer, size_t size) override {
if (!mStream->readback(buffer, size)) {
ALOGE("FATAL: Could not read back %zu bytes", size);
abort();
}
return size;
}
void clearPool() {
mPool.freeAll();
}
void setHandleMapping(VulkanHandleMapping* mapping) {
mCurrentHandleMapping = mapping;
}
void unsetHandleMapping() {
mCurrentHandleMapping = &mDefaultHandleMapping;
}
VulkanHandleMapping* handleMapping() const {
return mCurrentHandleMapping;
}
void flush() {
commitWrite();
}
uint32_t getFeatureBits() const {
return mFeatureBits;
}
void incStreamRef() {
mStream->incRef();
}
bool decStreamRef() {
return mStream->decRef();
}
private:
size_t oustandingWriteBuffer() const {
return mWritePos;
}
size_t remainingWriteBufferSize() const {
return mWriteBuffer.size() - mWritePos;
}
void commitWrite() {
AEMU_SCOPED_TRACE("VulkanStreamGuest device write");
mStream->flush();
}
ssize_t bufferedWrite(const void *buffer, size_t size) {
if (size > remainingWriteBufferSize()) {
mWriteBuffer.resize((mWritePos + size) << 1);
}
memcpy(mWriteBuffer.data() + mWritePos, buffer, size);
mWritePos += size;
return size;
}
android::base::Pool mPool { 8, 4096, 64 };
size_t mWritePos = 0;
std::vector<uint8_t> mWriteBuffer;
IOStream* mStream = nullptr;
DefaultHandleMapping mDefaultHandleMapping;
VulkanHandleMapping* mCurrentHandleMapping;
uint32_t mFeatureBits = 0;
};
VulkanStreamGuest::VulkanStreamGuest(IOStream *stream) :
mImpl(new VulkanStreamGuest::Impl(stream)) { }
VulkanStreamGuest::~VulkanStreamGuest() = default;
bool VulkanStreamGuest::valid() {
return mImpl->valid();
}
void VulkanStreamGuest::alloc(void** ptrAddr, size_t bytes) {
mImpl->alloc(ptrAddr, bytes);
}
void VulkanStreamGuest::loadStringInPlace(char** forOutput) {
size_t len = getBe32();
alloc((void**)forOutput, len + 1);
memset(*forOutput, 0x0, len + 1);
if (len > 0) read(*forOutput, len);
}
void VulkanStreamGuest::loadStringArrayInPlace(char*** forOutput) {
size_t count = getBe32();
if (!count) {
*forOutput = nullptr;
return;
}
alloc((void**)forOutput, count * sizeof(char*));
char **stringsForOutput = *forOutput;
for (size_t i = 0; i < count; i++) {
loadStringInPlace(stringsForOutput + i);
}
}
ssize_t VulkanStreamGuest::read(void *buffer, size_t size) {
return mImpl->read(buffer, size);
}
ssize_t VulkanStreamGuest::write(const void *buffer, size_t size) {
return mImpl->write(buffer, size);
}
void VulkanStreamGuest::clearPool() {
mImpl->clearPool();
}
void VulkanStreamGuest::setHandleMapping(VulkanHandleMapping* mapping) {
mImpl->setHandleMapping(mapping);
}
void VulkanStreamGuest::unsetHandleMapping() {
mImpl->unsetHandleMapping();
}
VulkanHandleMapping* VulkanStreamGuest::handleMapping() const {
return mImpl->handleMapping();
}
void VulkanStreamGuest::flush() {
mImpl->flush();
}
uint32_t VulkanStreamGuest::getFeatureBits() const {
return mImpl->getFeatureBits();
}
void VulkanStreamGuest::incStreamRef() {
mImpl->incStreamRef();
}
bool VulkanStreamGuest::decStreamRef() {
return mImpl->decStreamRef();
}
VulkanCountingStream::VulkanCountingStream() : VulkanStreamGuest(nullptr) { }
VulkanCountingStream::~VulkanCountingStream() = default;
ssize_t VulkanCountingStream::read(void*, size_t size) {
m_read += size;
return size;
}
ssize_t VulkanCountingStream::write(const void*, size_t size) {
m_written += size;
return size;
}
void VulkanCountingStream::rewind() {
m_written = 0;
m_read = 0;
}
} // namespace goldfish_vk
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