From 398633bacedfe65ead524f9eee28faaeb9b65204 Mon Sep 17 00:00:00 2001
From: Dmitry Timoshkov <dmitry@baikal.ru>
Date: Fri, 11 Mar 2016 03:48:46 +0100
Subject: windowscodecs: Implement WICCreateBitmapFromSection(Ex).

---
 dlls/windowscodecs/imgfactory.c       | 48 +++++++++++++++++++++++++++++++++++
 dlls/windowscodecs/windowscodecs.spec |  3 ++-
 include/wincodec.idl                  |  8 ++++++
 3 files changed, 58 insertions(+), 1 deletion(-)

diff --git a/dlls/windowscodecs/imgfactory.c b/dlls/windowscodecs/imgfactory.c
index f2455fc..c3029b6 100644
--- a/dlls/windowscodecs/imgfactory.c
+++ b/dlls/windowscodecs/imgfactory.c
@@ -1174,3 +1174,51 @@ HRESULT ComponentFactory_CreateInstance(REFIID iid, void** ppv)
 
     return ret;
 }
+
+HRESULT WINAPI WICCreateBitmapFromSectionEx(UINT width, UINT height,
+        REFWICPixelFormatGUID format, HANDLE section, UINT stride,
+        UINT offset, WICSectionAccessLevel wicaccess, IWICBitmap **bitmap)
+{
+    DWORD access;
+    void *mem;
+    HRESULT hr;
+
+    TRACE("%u,%u,%s,%p,%u,%#x,%#x,%p\n", width, height, debugstr_guid(format),
+        section, stride, offset, wicaccess, bitmap);
+
+    if (!width || !height || !section || !bitmap) return E_INVALIDARG;
+
+    switch (wicaccess)
+    {
+    case WICSectionAccessLevelReadWrite:
+        access = FILE_MAP_READ | FILE_MAP_WRITE;
+        break;
+
+    case WICSectionAccessLevelRead:
+        access = FILE_MAP_READ;
+        break;
+
+    default:
+        FIXME("unsupported access %#x\n", wicaccess);
+        return E_INVALIDARG;
+    }
+
+    mem = MapViewOfFile(section, access, 0, offset, 0);
+    if (!mem) return E_INVALIDARG;
+
+    hr = BitmapImpl_Create(width, height, stride, 0, mem, format, WICBitmapCacheOnLoad, bitmap);
+
+    UnmapViewOfFile(mem);
+    return hr;
+}
+
+HRESULT WINAPI WICCreateBitmapFromSection(UINT width, UINT height,
+        REFWICPixelFormatGUID format, HANDLE section,
+        UINT stride, UINT offset, IWICBitmap **bitmap)
+{
+    TRACE("%u,%u,%s,%p,%u,%u,%p\n", width, height, debugstr_guid(format),
+        section, stride, offset, bitmap);
+
+    return WICCreateBitmapFromSectionEx(width, height, format, section,
+        stride, offset, WICSectionAccessLevelRead, bitmap);
+}
diff --git a/dlls/windowscodecs/windowscodecs.spec b/dlls/windowscodecs/windowscodecs.spec
index 81a827e..7ee76d9 100644
--- a/dlls/windowscodecs/windowscodecs.spec
+++ b/dlls/windowscodecs/windowscodecs.spec
@@ -105,7 +105,8 @@
 @ stdcall IWICStream_InitializeFromIStream_Proxy(ptr ptr) IWICStream_InitializeFromIStream_Proxy_W
 @ stdcall IWICStream_InitializeFromMemory_Proxy(ptr ptr long) IWICStream_InitializeFromMemory_Proxy_W
 @ stdcall WICConvertBitmapSource(ptr ptr ptr)
-@ stub WICCreateBitmapFromSection
+@ stdcall WICCreateBitmapFromSection(long long ptr long long long ptr)
+@ stdcall WICCreateBitmapFromSectionEx(long long ptr long long long long ptr)
 @ stdcall WICCreateColorContext_Proxy(ptr ptr)
 @ stdcall WICCreateImagingFactory_Proxy(long ptr)
 @ stub WICGetMetadataContentSize
diff --git a/include/wincodec.idl b/include/wincodec.idl
index 639d925..00a8da8 100644
--- a/include/wincodec.idl
+++ b/include/wincodec.idl
@@ -168,6 +168,12 @@ typedef enum WICTiffCompressionOption {
     WICTIFFCOMPRESSIONOPTION_FORCE_DWORD = CODEC_FORCE_DWORD
 } WICTiffCompressionOption;
 
+typedef enum WICSectionAccessLevel {
+    WICSectionAccessLevelRead = 0x00000001,
+    WICSectionAccessLevelReadWrite = 0x00000003,
+    WICSectionAccessLevel_FORCE_DWORD = CODEC_FORCE_DWORD
+} WICSectionAccessLevel;
+
 typedef GUID WICPixelFormatGUID;
 typedef REFGUID REFWICPixelFormatGUID;
 
@@ -982,6 +988,8 @@ interface IWICEnumMetadataItem : IUnknown
 }
 
 cpp_quote("HRESULT WINAPI WICConvertBitmapSource(REFWICPixelFormatGUID dstFormat, IWICBitmapSource *pISrc, IWICBitmapSource **ppIDst);")
+cpp_quote("HRESULT WINAPI WICCreateBitmapFromSection(UINT width, UINT height, REFWICPixelFormatGUID format, HANDLE section, UINT stride, UINT offset, IWICBitmap **bitmap);")
+cpp_quote("HRESULT WINAPI WICCreateBitmapFromSectionEx(UINT width, UINT height, REFWICPixelFormatGUID format, HANDLE section, UINT stride, UINT offset, WICSectionAccessLevel access, IWICBitmap **bitmap);")
 
 cpp_quote("DEFINE_GUID(CLSID_WICBmpDecoder, 0x6b462062,0x7cbf,0x400d,0x9f,0xdb,0x81,0x3d,0xd1,0x0f,0x27,0x78);")
 cpp_quote("DEFINE_GUID(CLSID_WICPngDecoder, 0x389ea17b,0x5078,0x4cde,0xb6,0xef,0x25,0xc1,0x51,0x75,0xc7,0x51);")
-- 
2.7.1