From 9d82d7e4264307d0573b646ca16e4f985e426b75 Mon Sep 17 00:00:00 2001
From: Youngki Ahn <ykahn@samsung.com>
Date: Thu, 16 May 2013 11:55:18 +0900
Subject: [PATCH] Internal API to make a BMP file from buffer added.

Change-Id: I0d464530bfc6ee77eb124ce56e080bb7294ce855
Signed-off-by: Youngki Ahn <ykahn@samsung.com>
---
 src/graphics/FGrp_BitmapImpl.cpp | 137 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)

diff --git a/src/graphics/FGrp_BitmapImpl.cpp b/src/graphics/FGrp_BitmapImpl.cpp
index 87072d6..4676fe7 100755
--- a/src/graphics/FGrp_BitmapImpl.cpp
+++ b/src/graphics/FGrp_BitmapImpl.cpp
@@ -2362,4 +2362,141 @@ _OSP_EXPORT_ bool _GetImageFileSize(const Tizen::Base::String fileName, int& out
 	return false;
 }
 
+_OSP_EXPORT_ bool _SaveToBmp(unsigned long* pBuffer, int width, int height, int pixelPerLine, const Tizen::Base::String& fileName)
+{
+	unsigned char bmpFileHeader[] =
+	{
+		0x42, 0x4D,
+		0x00, 0x00, 0x00, 0x00, // size
+		0x00, 0x00,
+		0x00, 0x00,
+		0x36, 0x00, 0x00, 0x00 // offset
+	};
+
+	unsigned char bmpDibHeader[] =
+	{
+		0x28, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, // width
+		0x00, 0x00, 0x00, 0x00, // height
+		0x01, 0x00,
+		0x18, 0x00,
+		0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00, // image size
+		0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00,
+		0x00, 0x00, 0x00, 0x00
+	};
+
+	int dstPitch  = width * 3;
+
+	while (dstPitch % 4)
+	{
+		++dstPitch;
+	}
+
+	int imageSize = dstPitch * height;
+	int offset = sizeof(bmpFileHeader) + sizeof(bmpDibHeader);
+
+	// fill in the reserved fields 
+	{
+		struct _LittleEndian
+		{
+			static inline void Write(unsigned char* pBuffer, unsigned long data)
+			{
+				pBuffer[0] = (data >>  0) & 0xFF;
+				pBuffer[1] = (data >>  8) & 0xFF;
+				pBuffer[2] = (data >> 16) & 0xFF;
+				pBuffer[3] = (data >> 24) & 0xFF;
+			}
+		};
+
+		// offset (little endian)
+		_LittleEndian::Write(&bmpFileHeader[2], imageSize + offset);
+		// offset (little endian)
+		_LittleEndian::Write(&bmpFileHeader[10], offset);
+		// width (little endian)
+		_LittleEndian::Write(&bmpDibHeader[4], width);
+		// height (little endian)
+		_LittleEndian::Write(&bmpDibHeader[8], height);
+		// image size (little endian)
+		_LittleEndian::Write(&bmpDibHeader[20], imageSize);
+	}
+
+	Tizen::Io::File file;
+
+	result r = file.Construct(fileName, "wb");
+
+	if (r != E_SUCCESS)
+	{
+		return false;
+	}
+
+	file.Write(bmpFileHeader, sizeof(bmpFileHeader));
+	file.Write(bmpDibHeader, sizeof(bmpDibHeader));
+
+	{
+		typedef unsigned long SourPixel;
+		typedef unsigned char DestPixel;
+
+		_Util::AutoPtr<DestPixel> lineBuffer(new DestPixel[dstPitch]);
+
+		for (int y = 0; y < height; y++)
+		{
+			memset(lineBuffer.Get(), 0, dstPitch);
+
+			SourPixel* pSour32 = pBuffer + pixelPerLine * (height - y - 1);
+			DestPixel* pDest08 = lineBuffer.Get();
+
+			for (int x = 0; x < width; x++)
+			{
+				*pDest08++ = (unsigned char)(*pSour32);
+				*pDest08++ = (unsigned char)(*pSour32 >> 8);
+				*pDest08++ = (unsigned char)(*pSour32 >> 16);
+
+				++pSour32;
+			}
+
+			file.Write(lineBuffer.Get(), dstPitch);
+		}
+
+	}
+
+	return true;
+}
+
+_OSP_EXPORT_ bool _SaveToBmp(const Canvas& canvas, const Tizen::Base::String& fileName)
+{
+	bool r = false;
+	BufferInfo bi;
+
+	const_cast<Canvas*>(&canvas)->Lock(bi);
+
+	if (bi.bitsPerPixel == 32)
+	{
+		r = _SaveToBmp((unsigned long*)bi.pPixels, bi.width, bi.height, bi.pitch * 8 / bi.bitsPerPixel, fileName);
+	}
+
+	const_cast<Canvas*>(&canvas)->Unlock();
+
+	return r;
+}
+
+_OSP_EXPORT_ bool _SaveToBmp(const Bitmap& bitmap, const Tizen::Base::String& fileName)
+{
+	bool r = false;
+	BufferInfo bi;
+
+	const_cast<Bitmap*>(&bitmap)->Lock(bi);
+
+	if (bi.bitsPerPixel == 32)
+	{
+		r = _SaveToBmp((unsigned long*)bi.pPixels, bi.width, bi.height, bi.pitch * 8 / bi.bitsPerPixel, fileName);
+	}
+
+	const_cast<Bitmap*>(&bitmap)->Unlock();
+
+	return r;
+}
+
 }} // Tizen::Graphics
-- 
2.7.4