Add base to the repository.
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/gfx/bitmap_header.cc b/base/gfx/bitmap_header.cc
new file mode 100644
index 0000000..3c54694
--- /dev/null
+++ b/base/gfx/bitmap_header.cc
@@ -0,0 +1,88 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "base/gfx/bitmap_header.h"
+
+namespace gfx {
+
+void CreateBitmapHeader(int width, int height, BITMAPINFOHEADER* hdr) {
+ CreateBitmapHeaderWithColorDepth(width, height, 32, hdr);
+}
+
+void CreateBitmapHeaderWithColorDepth(int width, int height, int color_depth,
+ BITMAPINFOHEADER* hdr) {
+ // These values are shared with gfx::PlatformDevice
+ hdr->biSize = sizeof(BITMAPINFOHEADER);
+ hdr->biWidth = width;
+ hdr->biHeight = -height; // minus means top-down bitmap
+ hdr->biPlanes = 1;
+ hdr->biBitCount = color_depth;
+ hdr->biCompression = BI_RGB; // no compression
+ hdr->biSizeImage = 0;
+ hdr->biXPelsPerMeter = 1;
+ hdr->biYPelsPerMeter = 1;
+ hdr->biClrUsed = 0;
+ hdr->biClrImportant = 0;
+}
+
+
+void CreateBitmapV4Header(int width, int height, BITMAPV4HEADER* hdr) {
+ // Because bmp v4 header is just an extension, we just create a v3 header and
+ // copy the bits over to the v4 header.
+ BITMAPINFOHEADER header_v3;
+ CreateBitmapHeader(width, height, &header_v3);
+ memset(hdr, 0, sizeof(BITMAPV4HEADER));
+ memcpy(hdr, &header_v3, sizeof(BITMAPINFOHEADER));
+
+ // Correct the size of the header and fill in the mask values.
+ hdr->bV4Size = sizeof(BITMAPV4HEADER);
+ hdr->bV4RedMask = 0x00ff0000;
+ hdr->bV4GreenMask = 0x0000ff00;
+ hdr->bV4BlueMask = 0x000000ff;
+ hdr->bV4AlphaMask = 0xff000000;
+}
+
+// Creates a monochrome bitmap header.
+void CreateMonochromeBitmapHeader(int width,
+ int height,
+ BITMAPINFOHEADER* hdr) {
+ hdr->biSize = sizeof(BITMAPINFOHEADER);
+ hdr->biWidth = width;
+ hdr->biHeight = -height;
+ hdr->biPlanes = 1;
+ hdr->biBitCount = 1;
+ hdr->biCompression = BI_RGB;
+ hdr->biSizeImage = 0;
+ hdr->biXPelsPerMeter = 1;
+ hdr->biYPelsPerMeter = 1;
+ hdr->biClrUsed = 0;
+ hdr->biClrImportant = 0;
+}
+
+} // namespace gfx
