Dmitry Timoshkov : windowscodecs: Add support for generating WICBitmapPaletteTypeFixedGray256 palette.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ca126c069fcbf388acac0326d18ea3fb6343bb12
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=ca126c069fcbf388acac0326d1...

Author: Dmitry Timoshkov 
Date:   Thu Jul 12 16:09:26 2012 +0900

windowscodecs: Add support for generating WICBitmapPaletteTypeFixedGray256 palette.

---

dlls/windowscodecs/palette.c       |   22 ++++++++++++++++++++++
 dlls/windowscodecs/tests/palette.c |   16 ++++++++++++++++
 2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/dlls/windowscodecs/palette.c b/dlls/windowscodecs/palette.c
index 03f5774a..9d3b8ee 100644
--- a/dlls/windowscodecs/palette.c
+++ b/dlls/windowscodecs/palette.c
@@ -115,6 +115,23 @@ static WICColor *generate_gray16_palette(UINT *count)
     return entries;
 }

+static WICColor *generate_gray256_palette(UINT *count)
+{
+    WICColor *entries;
+    UINT i;
+
+    *count = 256;
+    entries = HeapAlloc(GetProcessHeap(), 0, 256 * sizeof(WICColor));
+    if (!entries) return NULL;
+
+    for (i = 0; i < 256; i++)
+    {
+        entries[i] = 0xff000000;
+        entries[i] |= (i<<16) | (i<<8) | i;
+    }
+    return entries;
+}
+
 static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
     WICBitmapPaletteType type, BOOL add_transparent)
 {
@@ -149,6 +166,11 @@ static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
         if (!colors) return E_OUTOFMEMORY;
         break;

+    case WICBitmapPaletteTypeFixedGray256:
+        colors = generate_gray256_palette(&count);
+        if (!colors) return E_OUTOFMEMORY;
+        break;
+
     default:
         FIXME("(%p,%u,%d): stub\n", iface, type, add_transparent);
         return E_NOTIMPL;
diff --git a/dlls/windowscodecs/tests/palette.c b/dlls/windowscodecs/tests/palette.c
index aba8168..ef21307 100644
--- a/dlls/windowscodecs/tests/palette.c
+++ b/dlls/windowscodecs/tests/palette.c
@@ -162,6 +162,19 @@ static void generate_gray16_palette(DWORD *entries, UINT count)
     }
 }

+static void generate_gray256_palette(DWORD *entries, UINT count)
+{
+    UINT i;
+
+    assert(count == 256);
+
+    for (i = 0; i < 256; i++)
+    {
+        entries[i] = 0xff000000;
+        entries[i] |= (i << 16) | (i << 8) | i;
+    }
+}
+
 static void test_predefined_palette(void)
 {
     static struct test_data
@@ -176,6 +189,7 @@ static void test_predefined_palette(void)
         { WICBitmapPaletteTypeFixedGray4, 0, 1, 4,
           { 0xff000000, 0xff555555, 0xffaaaaaa, 0xffffffff } },
         { WICBitmapPaletteTypeFixedGray16, 0, 1, 16, { 0 } },
+        { WICBitmapPaletteTypeFixedGray256, 0, 1, 256, { 0 } },
     };
     IWICImagingFactory *factory;
     IWICPalette *palette;
@@ -228,6 +242,8 @@ static void test_predefined_palette(void)

if (td[i].type == WICBitmapPaletteTypeFixedGray16)
                 generate_gray16_palette(td[i].color, td[i].count);
+            else if (td[i].type == WICBitmapPaletteTypeFixedGray256)
+                generate_gray256_palette(td[i].color, td[i].count);

for (j = 0; j < count; j++)
             {