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/*
* Copyright 2021 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_NDEBUG 0
#undef LOG_TAG
#define LOG_TAG "Planner"
#include <compositionengine/impl/planner/TexturePool.h>
#include <utils/Log.h>
namespace android::compositionengine::impl::planner {
void TexturePool::setDisplaySize(ui::Size size) {
if (mSize == size) {
return;
}
mSize = size;
mPool.clear();
mPool.resize(kMinPoolSize);
std::generate_n(mPool.begin(), kMinPoolSize, [&]() { return Entry{genTexture(), nullptr}; });
}
std::shared_ptr<TexturePool::AutoTexture> TexturePool::borrowTexture() {
if (mPool.empty()) {
return std::make_shared<AutoTexture>(*this, genTexture(), nullptr);
}
const auto entry = mPool.front();
mPool.pop_front();
return std::make_shared<AutoTexture>(*this, entry.texture, entry.fence);
}
void TexturePool::returnTexture(std::shared_ptr<renderengine::ExternalTexture>&& texture,
const sp<Fence>& fence) {
// Drop the texture on the floor if the pool is no longer tracking textures of the same size.
if (static_cast<int32_t>(texture->getBuffer()->getWidth()) != mSize.getWidth() ||
static_cast<int32_t>(texture->getBuffer()->getHeight()) != mSize.getHeight()) {
ALOGV("Deallocating texture from Planner's pool - display size changed (previous: (%dx%d), "
"current: (%dx%d))",
texture->getBuffer()->getWidth(), texture->getBuffer()->getHeight(), mSize.getWidth(),
mSize.getHeight());
return;
}
// Also ensure the pool does not grow beyond a maximum size.
if (mPool.size() == kMaxPoolSize) {
ALOGD("Deallocating texture from Planner's pool - max size [%" PRIu64 "] reached",
static_cast<uint64_t>(kMaxPoolSize));
return;
}
mPool.push_back({std::move(texture), fence});
}
std::shared_ptr<renderengine::ExternalTexture> TexturePool::genTexture() {
LOG_ALWAYS_FATAL_IF(!mSize.isValid(), "Attempted to generate texture with invalid size");
return std::make_shared<
renderengine::ExternalTexture>(sp<GraphicBuffer>::
make(mSize.getWidth(), mSize.getHeight(),
HAL_PIXEL_FORMAT_RGBA_8888, 1,
GraphicBuffer::USAGE_HW_RENDER |
GraphicBuffer::USAGE_HW_COMPOSER |
GraphicBuffer::USAGE_HW_TEXTURE,
"Planner"),
mRenderEngine,
renderengine::ExternalTexture::Usage::READABLE |
renderengine::ExternalTexture::Usage::WRITEABLE);
}
} // namespace android::compositionengine::impl::planner
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