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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 <GLES2/gl2.h>
#include <utils/Mutex.h>
#include "Caches.h"
#include "Texture.h"
#include "TextureCache.h"
#include "Properties.h"
#include "utils/TraceUtils.h"
#include "hwui/Bitmap.h"
namespace android {
namespace uirenderer {
///////////////////////////////////////////////////////////////////////////////
// Constructors/destructor
///////////////////////////////////////////////////////////////////////////////
TextureCache::TextureCache()
: mCache(LruCache<uint32_t, Texture*>::kUnlimitedCapacity)
, mSize(0)
, mMaxSize(Properties::textureCacheSize)
, mFlushRate(Properties::textureCacheFlushRate) {
mCache.setOnEntryRemovedListener(this);
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
INIT_LOGD(" Maximum texture dimension is %d pixels", mMaxTextureSize);
mDebugEnabled = Properties::debugLevel & kDebugCaches;
}
TextureCache::~TextureCache() {
this->clear();
}
///////////////////////////////////////////////////////////////////////////////
// Size management
///////////////////////////////////////////////////////////////////////////////
uint32_t TextureCache::getSize() {
return mSize;
}
uint32_t TextureCache::getMaxSize() {
return mMaxSize;
}
///////////////////////////////////////////////////////////////////////////////
// Callbacks
///////////////////////////////////////////////////////////////////////////////
void TextureCache::operator()(uint32_t&, Texture*& texture) {
// This will be called already locked
if (texture) {
mSize -= texture->bitmapSize;
TEXTURE_LOGD("TextureCache::callback: name, removed size, mSize = %d, %d, %d",
texture->id, texture->bitmapSize, mSize);
if (mDebugEnabled) {
ALOGD("Texture deleted, size = %d", texture->bitmapSize);
}
texture->deleteTexture();
delete texture;
}
}
///////////////////////////////////////////////////////////////////////////////
// Caching
///////////////////////////////////////////////////////////////////////////////
void TextureCache::resetMarkInUse(void* ownerToken) {
LruCache<uint32_t, Texture*>::Iterator iter(mCache);
while (iter.next()) {
if (iter.value()->isInUse == ownerToken) {
iter.value()->isInUse = nullptr;
}
}
}
bool TextureCache::canMakeTextureFromBitmap(Bitmap* bitmap) {
if (bitmap->width() > mMaxTextureSize || bitmap->height() > mMaxTextureSize) {
ALOGW("Bitmap too large to be uploaded into a texture (%dx%d, max=%dx%d)",
bitmap->width(), bitmap->height(), mMaxTextureSize, mMaxTextureSize);
return false;
}
return true;
}
Texture* TextureCache::createTexture(Bitmap* bitmap) {
Texture* texture = new Texture(Caches::getInstance());
texture->bitmapSize = bitmap->rowBytes() * bitmap->height();
texture->generation = bitmap->getGenerationID();
texture->upload(*bitmap);
return texture;
}
// Returns a prepared Texture* that either is already in the cache or can fit
// in the cache (and is thus added to the cache)
Texture* TextureCache::getCachedTexture(Bitmap* bitmap) {
if (bitmap->isHardware()) {
auto textureIterator = mHardwareTextures.find(bitmap->getStableID());
if (textureIterator == mHardwareTextures.end()) {
Texture* texture = createTexture(bitmap);
mHardwareTextures.insert(std::make_pair(bitmap->getStableID(),
std::unique_ptr<Texture>(texture)));
if (mDebugEnabled) {
ALOGD("Texture created for hw bitmap size = %d", texture->bitmapSize);
}
return texture;
}
return textureIterator->second.get();
}
Texture* texture = mCache.get(bitmap->getStableID());
if (!texture) {
if (!canMakeTextureFromBitmap(bitmap)) {
return nullptr;
}
const uint32_t size = bitmap->rowBytes() * bitmap->height();
bool canCache = size < mMaxSize;
// Don't even try to cache a bitmap that's bigger than the cache
while (canCache && mSize + size > mMaxSize) {
Texture* oldest = mCache.peekOldestValue();
if (oldest && !oldest->isInUse) {
mCache.removeOldest();
} else {
canCache = false;
}
}
if (canCache) {
texture = createTexture(bitmap);
mSize += size;
TEXTURE_LOGD("TextureCache::get: create texture(%p): name, size, mSize = %d, %d, %d",
bitmap, texture->id, size, mSize);
if (mDebugEnabled) {
ALOGD("Texture created, size = %d", size);
}
mCache.put(bitmap->getStableID(), texture);
}
} else if (!texture->isInUse && bitmap->getGenerationID() != texture->generation) {
// Texture was in the cache but is dirty, re-upload
// TODO: Re-adjust the cache size if the bitmap's dimensions have changed
texture->upload(*bitmap);
texture->generation = bitmap->getGenerationID();
}
return texture;
}
bool TextureCache::prefetchAndMarkInUse(void* ownerToken, Bitmap* bitmap) {
Texture* texture = getCachedTexture(bitmap);
if (texture) {
texture->isInUse = ownerToken;
}
return texture;
}
bool TextureCache::prefetch(Bitmap* bitmap) {
return getCachedTexture(bitmap);
}
Texture* TextureCache::get(Bitmap* bitmap) {
Texture* texture = getCachedTexture(bitmap);
if (!texture) {
if (!canMakeTextureFromBitmap(bitmap)) {
return nullptr;
}
texture = createTexture(bitmap);
texture->cleanup = true;
}
return texture;
}
bool TextureCache::destroyTexture(uint32_t pixelRefStableID) {
auto hardwareIter = mHardwareTextures.find(pixelRefStableID);
if (hardwareIter != mHardwareTextures.end()) {
hardwareIter->second->deleteTexture();
mHardwareTextures.erase(hardwareIter);
return true;
}
return mCache.remove(pixelRefStableID);
}
void TextureCache::clear() {
mCache.clear();
for(auto& iter: mHardwareTextures) {
iter.second->deleteTexture();
}
mHardwareTextures.clear();
TEXTURE_LOGD("TextureCache:clear(), mSize = %d", mSize);
}
void TextureCache::flush() {
if (mFlushRate >= 1.0f || mCache.size() == 0) return;
if (mFlushRate <= 0.0f) {
clear();
return;
}
uint32_t targetSize = uint32_t(mSize * mFlushRate);
TEXTURE_LOGD("TextureCache::flush: target size: %d", targetSize);
while (mSize > targetSize) {
mCache.removeOldest();
}
}
}; // namespace uirenderer
}; // namespace android