8dc8dbc821
1. Merge some of the allocators into sk_malloc_flags by redefining a flag to mean zero-init 2. Add more private helpers to simplify our call-sites (and handle some overflow mul checks) 3. The 2-param helpers rely on the saturating SkSafeMath::Mul to pass max_size_t as the request, which should always fail. Bug:508641 Change-Id: I322f1e6ed91113467e0fdb12c91c3dad33d890c8 Reviewed-on: https://skia-review.googlesource.com/90940 Commit-Queue: Mike Reed <reed@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com> Reviewed-by: Stephan Altmueller <stephana@google.com>
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/*
|
|
* Copyright 2016 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "SkAutoPixmapStorage.h"
|
|
#include "SkData.h"
|
|
|
|
SkAutoPixmapStorage::SkAutoPixmapStorage() : fStorage(nullptr) {}
|
|
|
|
SkAutoPixmapStorage::~SkAutoPixmapStorage() {
|
|
this->freeStorage();
|
|
}
|
|
|
|
SkAutoPixmapStorage& SkAutoPixmapStorage::operator=(SkAutoPixmapStorage&& other) {
|
|
this->fStorage = other.fStorage;
|
|
this->INHERITED::reset(other.info(), this->fStorage, other.rowBytes());
|
|
|
|
other.fStorage = nullptr;
|
|
other.INHERITED::reset();
|
|
|
|
return *this;
|
|
}
|
|
|
|
size_t SkAutoPixmapStorage::AllocSize(const SkImageInfo& info, size_t* rowBytes) {
|
|
size_t rb = info.minRowBytes();
|
|
if (rowBytes) {
|
|
*rowBytes = rb;
|
|
}
|
|
return info.computeByteSize(rb);
|
|
}
|
|
|
|
bool SkAutoPixmapStorage::tryAlloc(const SkImageInfo& info) {
|
|
this->freeStorage();
|
|
|
|
size_t rb;
|
|
size_t size = AllocSize(info, &rb);
|
|
if (SkImageInfo::ByteSizeOverflowed(size)) {
|
|
return false;
|
|
}
|
|
void* pixels = sk_malloc_canfail(size);
|
|
if (nullptr == pixels) {
|
|
return false;
|
|
}
|
|
this->reset(info, pixels, rb);
|
|
fStorage = pixels;
|
|
return true;
|
|
}
|
|
|
|
void SkAutoPixmapStorage::alloc(const SkImageInfo& info) {
|
|
SkASSERT_RELEASE(this->tryAlloc(info));
|
|
}
|
|
|
|
const SkData* SkAutoPixmapStorage::detachPixelsAsData() {
|
|
if (!fStorage) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto data = SkData::MakeFromMalloc(fStorage, this->computeByteSize());
|
|
fStorage = nullptr;
|
|
this->INHERITED::reset();
|
|
|
|
return data.release();
|
|
}
|