diff options
Diffstat (limited to 'src/core/SkAutoPixmapStorage.cpp')
-rw-r--r-- | src/core/SkAutoPixmapStorage.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/core/SkAutoPixmapStorage.cpp b/src/core/SkAutoPixmapStorage.cpp new file mode 100644 index 0000000000..3be28a94c4 --- /dev/null +++ b/src/core/SkAutoPixmapStorage.cpp @@ -0,0 +1,64 @@ + +/* + * 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(); +} + +size_t SkAutoPixmapStorage::AllocSize(const SkImageInfo& info, size_t* rowBytes) { + size_t rb = info.minRowBytes(); + if (rowBytes) { + *rowBytes = rb; + } + return info.getSafeSize(rb); +} + +bool SkAutoPixmapStorage::tryAlloc(const SkImageInfo& info) { + this->freeStorage(); + + size_t rb; + size_t size = AllocSize(info, &rb); + if (0 == size) { + return false; + } + void* pixels = sk_malloc_flags(size, 0); + if (nullptr == pixels) { + return false; + } + this->reset(info, pixels, rb); + fStorage = pixels; + return true; +} + +void SkAutoPixmapStorage::alloc(const SkImageInfo& info) { + if (!this->tryAlloc(info)) { + sk_throw(); + } +} + +const SkData* SkAutoPixmapStorage::detachPixelsAsData() { + if (!fStorage) { + return nullptr; + } + + auto data = SkData::MakeFromMalloc(fStorage, this->getSafeSize()); + fStorage = nullptr; + this->INHERITED::reset(); + + return data.release(); +} + +void SkAutoPixmapStorage::release() { + fStorage = nullptr; + this->INHERITED::reset(); +} |