From be732c1027dda609569545d86aa636bc4507ef36 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 3 Feb 2022 18:02:55 +0800
Subject: ...

---
 src/win/graphics/direct/ImageFactory.cpp | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/win/graphics/direct/ImageFactory.cpp b/src/win/graphics/direct/ImageFactory.cpp
index ced590ec..7d297ff8 100644
--- a/src/win/graphics/direct/ImageFactory.cpp
+++ b/src/win/graphics/direct/ImageFactory.cpp
@@ -1,4 +1,5 @@
 #include "cru/win/graphics/direct/ImageFactory.hpp"
+#include "cru/common/platform/win/StreamConvert.hpp"
 #include "cru/win/graphics/direct/Exception.hpp"
 #include "cru/win/graphics/direct/Factory.hpp"
 #include "cru/win/graphics/direct/Image.hpp"
@@ -17,23 +18,14 @@ WinImageFactory::WinImageFactory(DirectGraphicsFactory* graphics_factory)
 WinImageFactory::~WinImageFactory() {}
 
 std::unique_ptr<IImage> WinImageFactory::DecodeFromStream(io::Stream* stream) {
-  // TODO: The correct way to do this is to implement a IStream wrapper.
-
-  auto buffer = stream->ReadAll();
-
   HRESULT hr;
 
-  Microsoft::WRL::ComPtr<IWICStream> wic_stream;
-  hr = wic_imaging_factory_->CreateStream(&wic_stream);
-  ThrowIfFailed(hr);
-
-  hr = wic_stream->InitializeFromMemory(
-      reinterpret_cast<unsigned char*>(buffer.data()), buffer.size());
-  ThrowIfFailed(hr);
+  Microsoft::WRL::ComPtr<IStream> com_stream(
+      platform::win::ConvertStreamToComStream(stream));
 
   Microsoft::WRL::ComPtr<IWICBitmapDecoder> wic_bitmap_decoder;
   hr = wic_imaging_factory_->CreateDecoderFromStream(
-      wic_stream.Get(), NULL, WICDecodeMetadataCacheOnDemand,
+      com_stream.Get(), NULL, WICDecodeMetadataCacheOnDemand,
       &wic_bitmap_decoder);
   ThrowIfFailed(hr);
 
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