msvfw32/tests: Add tests for drawdib.

dlls/msvfw32/tests/Makefile.in

 TESTDLL   = msvfw32.dll
-IMPORTS   = msvfw32
+IMPORTS   = msvfw32 advapi32 gdi32
 
 C_SRCS = \
+	drawdib.c \
 	msvfw.c

dlls/msvfw32/tests/drawdib.c

+/*
+ * Copyright 2014 Akihiro Sagawa
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#define WIN32_LEAN_AND_MEAN
+
+#include <windows.h>
+#include <vfw.h>
+#include <wincrypt.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "wine/test.h"
+
+#define WIDTH  16
+#define HEIGHT 12
+
+static HCRYPTPROV crypt_prov;
+
+static inline DWORD get_stride(const BITMAPINFO *bmi)
+{
+    return ((bmi->bmiHeader.biBitCount * bmi->bmiHeader.biWidth + 31) >> 3) & ~3;
+}
+
+static inline DWORD get_dib_size(const BITMAPINFO *bmi)
+{
+    return get_stride(bmi) * abs(bmi->bmiHeader.biHeight);
+}
+
+static char *hash_dib(const BITMAPINFO *bmi, const void *bits)
+{
+    DWORD dib_size = get_dib_size(bmi);
+    HCRYPTHASH hash;
+    char *buf;
+    BYTE hash_buf[20];
+    DWORD hash_size = sizeof(hash_buf);
+    int i;
+    static const char *hex = "0123456789abcdef";
+
+    if(!crypt_prov) return NULL;
+
+    if(!CryptCreateHash(crypt_prov, CALG_SHA1, 0, 0, &hash)) return NULL;
+
+    CryptHashData(hash, bits, dib_size, 0);
+
+    CryptGetHashParam(hash, HP_HASHVAL, NULL, &hash_size, 0);
+    if(hash_size != sizeof(hash_buf)) return NULL;
+
+    CryptGetHashParam(hash, HP_HASHVAL, hash_buf, &hash_size, 0);
+    CryptDestroyHash(hash);
+
+    buf = HeapAlloc(GetProcessHeap(), 0, hash_size * 2 + 1);
+
+    for(i = 0; i < hash_size; i++)
+    {
+        buf[i * 2] = hex[hash_buf[i] >> 4];
+        buf[i * 2 + 1] = hex[hash_buf[i] & 0xf];
+    }
+    buf[i * 2] = '\0';
+
+    return buf;
+}
+
+static void init_bmi(BITMAPINFO *bmi, LONG width, LONG height, DWORD size)
+{
+    memset(bmi, 0, sizeof(*bmi));
+    bmi->bmiHeader.biSize        = sizeof(BITMAPINFOHEADER);
+    bmi->bmiHeader.biWidth       = width;
+    bmi->bmiHeader.biHeight      = height;
+    bmi->bmiHeader.biPlanes      = 1;
+    bmi->bmiHeader.biBitCount    = 32;
+    bmi->bmiHeader.biCompression = BI_RGB;
+    bmi->bmiHeader.biSizeImage   = size;
+}
+
+static void test_DrawDib_sizeimage(void)
+{
+    const struct {
+        LONG width, height;
+        DWORD size;
+        char hash[41];
+    } test_data[] = {
+        /* [0] correct size */
+        {  WIDTH,   HEIGHT, WIDTH * HEIGHT * sizeof(RGBQUAD), "bc943d5ab024b8b0118d0a80aa283055d39942b8" },
+        /* [1] zero size */
+        {  WIDTH,   HEIGHT, 0, "bc943d5ab024b8b0118d0a80aa283055d39942b8" },
+    };
+    HDC hdc;
+    DWORD src_dib_size, dst_dib_size;
+    BOOL r;
+    HBITMAP dib;
+    BITMAPINFO src_info, dst_info;
+    RGBQUAD *src_bits = NULL, *dst_bits;
+    HDRAWDIB hdd;
+    unsigned int i;
+
+    hdc = CreateCompatibleDC(NULL);
+
+    init_bmi(&dst_info, WIDTH, HEIGHT, 0);
+    dib = CreateDIBSection(NULL, &dst_info, DIB_RGB_COLORS, (void **)&dst_bits, NULL, 0);
+    dst_dib_size = get_dib_size(&dst_info);
+    ok(dib != NULL, "CreateDIBSection failed\n");
+    SelectObject(hdc, dib);
+
+    init_bmi(&src_info, WIDTH, HEIGHT, 0);
+    src_dib_size = get_dib_size(&src_info);
+    src_bits = HeapAlloc(GetProcessHeap(), 0, src_dib_size);
+    ok(src_bits != NULL, "Can't allocate memory\n");
+    memset(src_bits, 0x88, src_dib_size);
+
+    hdd = DrawDibOpen();
+    ok(hdd != NULL, "DrawDibOpen failed\n");
+
+    for (i = 0; i < sizeof(test_data)/sizeof(test_data[0]); i++) {
+        char *hash;
+        memset(dst_bits, 0xff, dst_dib_size);
+        init_bmi(&src_info, test_data[i].width, test_data[i].height, test_data[i].size);
+        r = DrawDibDraw(hdd, hdc,
+                        0, 0, -1, -1, &src_info.bmiHeader, src_bits,
+                        0, 0, test_data[i].width, test_data[i].height, 0);
+        if (test_data[i].hash[0])
+            ok(r, "[%u] DrawDibDraw failed, expected success\n", i);
+        else
+            ok(!r, "[%u] DrawDibDraw succeeded, expected failed\n", i);
+        if (!r || !test_data[i].hash[0])
+            continue;
+
+        hash = hash_dib(&dst_info, dst_bits);
+        if (!hash) {
+            win_skip("This platform doesn't support SHA-1 hash\n");
+            continue;
+        }
+        ok(strcmp(hash, test_data[i].hash) == 0,
+           "[%u] got %s, expected %s\n",
+           i, hash, test_data[i].hash);
+        HeapFree(GetProcessHeap(), 0, hash);
+    }
+
+    r = DrawDibClose(hdd);
+    ok(r, "DrawDibClose failed\n");
+
+    HeapFree(GetProcessHeap(), 0, src_bits);
+
+    DeleteDC(hdc);
+}
+
+START_TEST(drawdib)
+{
+    CryptAcquireContextW(&crypt_prov, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
+    test_DrawDib_sizeimage();
+    CryptReleaseContext(crypt_prov, 0);
+}