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windowscodecs/tests: Add a test for loading PNG grayscale images. 

Signed-off-by: Vincent Povirk <vincent@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Dmitry Timoshkov 2017-08-17 13:35:29 -05:00 committed by Alexandre Julliard
parent eb212c1939
commit 1dbc9fcb9c
1 changed files with 57 additions and 1 deletions
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58
dlls/windowscodecs/tests/pngformat.c
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@ -1,5 +1,5 @@
/*
* Copyright 2012 Dmitry Timoshkov
* Copyright 2012, 2016 Dmitry Timoshkov
* Copyright 2012 Hans Leidekker for CodeWeavers
*
* This library is free software; you can redistribute it and/or
@ -580,6 +580,61 @@ static void test_png_palette(void)
IWICBitmapDecoder_Release(decoder);
}
/* RGB 24 bpp 1x1 pixel PNG image */
static const char png_1x1_data[] = {
0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a,
0x00,0x00,0x00,0x0d,'I','H','D','R',0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x01,0x08,0x02,0x00,0x00,0x00,0x90,0x77,0x53,0xde,
0x00,0x00,0x00,0x0c,'I','D','A','T',0x08,0xd7,0x63,0xf8,0xff,0xff,0x3f,0x00,0x05,0xfe,0x02,0xfe,0xdc,0xcc,0x59,0xe7,
0x00,0x00,0x00,0x00,'I','E','N','D',0xae,0x42,0x60,0x82
};
static void test_color_formats(void)
{
static const struct
{
char bit_depth, color_type;
const GUID *format;
} td[] =
{
/* 2 - PNG_COLOR_TYPE_RGB */
{ 8, 2, &GUID_WICPixelFormat24bppBGR },
/* 0 - PNG_COLOR_TYPE_GRAY */
{ 1, 0, &GUID_WICPixelFormatBlackWhite },
{ 2, 0, &GUID_WICPixelFormat2bppGray },
{ 4, 0, &GUID_WICPixelFormat4bppGray },
{ 8, 0, &GUID_WICPixelFormat8bppGray },
{ 16, 0, &GUID_WICPixelFormat16bppGray },
};
char buf[sizeof(png_1x1_data)];
HRESULT hr;
IWICBitmapDecoder *decoder;
IWICBitmapFrameDecode *frame;
GUID format;
int i;
for (i = 0; i < sizeof(td)/sizeof(td[0]); i++)
{
memcpy(buf, png_1x1_data, sizeof(png_1x1_data));
buf[24] = td[i].bit_depth;
buf[25] = td[i].color_type;
decoder = create_decoder(buf, sizeof(buf));
ok(decoder != NULL, "Failed to load PNG image data\n");
if (!decoder) continue;
hr = IWICBitmapDecoder_GetFrame(decoder, 0, &frame);
ok(hr == S_OK, "GetFrame error %#x\n", hr);
hr = IWICBitmapFrameDecode_GetPixelFormat(frame, &format);
ok(hr == S_OK, "GetPixelFormat error %#x\n", hr);
ok(IsEqualGUID(&format, td[i].format),
"expected %s, got %s\n", wine_dbgstr_guid(td[i].format), wine_dbgstr_guid(&format));
IWICBitmapFrameDecode_Release(frame);
IWICBitmapDecoder_Release(decoder);
}
}
START_TEST(pngformat)
{
HRESULT hr;
@ -592,6 +647,7 @@ START_TEST(pngformat)
test_color_contexts();
test_png_palette();
test_color_formats();
IWICImagingFactory_Release(factory);
CoUninitialize();