--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/multimedia/t_camera_bitmap.cpp Wed Sep 01 12:34:56 2010 +0100
@@ -0,0 +1,291 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// e32test/multimedia/t_camera_bitmap.cpp
+// This is a basic Windows bitmap file writer, that can be used for converting YUV422 data into
+// RGB format and dumping it to a Windows .bmp file, for manual examination.
+//
+//
+
+#include <e32test.h>
+#include <f32file.h>
+#include "t_camera_bitmap.h"
+
+#define CLIP(a) if (a < 0) a = 0; else if (a > 255) a = 255;
+
+/**
+Converts a RGB565 buffer into 24 bit RGB format in a second buffer.
+@param aDest Pointer to the buffer into which to place the 24 bit RGB data
+@param aSource Pointer to the buffer containing the RGB565 data to be converted
+@param aWidth The width of the data in the buffer in pixels
+@param aHeight The height of the data in the buffer in pixels
+*/
+void RBitmap::RGBToRGB(TUint8* aDest, TUint8* aSource, TInt aWidth, TInt aHeight)
+ {
+ TUint16* source = (TUint16*) aSource;
+ TUint16 pixel;
+
+ for (TInt y = 0; y < aHeight; ++y)
+ {
+ for (TInt x = 0; x < aWidth; ++x)
+ {
+ pixel = *source++;
+ *aDest++ = (TUint8) ((pixel & 0xf800) >> 8);
+ *aDest++ = (TUint8) ((pixel & 0x07e0) >> 3);
+ *aDest++ = (TUint8) ((pixel & 0x001f) << 3);
+ }
+ }
+ }
+
+/**
+Converts a YUV422 buffer into 24 bit RGB format in a second buffer.
+@param aDest Pointer to the buffer into which to place the 24 bit RGB data
+@param aSource Pointer to the buffer containing the YUV422 data to be converted
+@param aWidth The width of the data in the buffer in pixels
+@param aHeight The height of the data in the buffer in pixels
+*/
+void RBitmap::YUVToRGB(TUint8* aDest, TUint8* aSource, TInt aWidth, TInt aHeight)
+ {
+ TInt y, u, v, r, g, b;
+
+ aDest += ((aWidth * 3) * (aHeight - 1));
+
+ for (TInt l = 0; l < aHeight; ++l)
+ {
+ for (TInt x = 0; x < (aWidth / 2); ++x)
+ {
+ u = (aSource[0] - 128);
+ v = (aSource[2] - 128);
+ y = (aSource[3] - 16);
+
+ r = ((298 * y + 409 * u) / 256);
+ g = ((298 * y - 100 * v - 208 * u) / 256);
+ b = ((298 * y + 516 * v) / 256);
+
+ CLIP(r);
+ CLIP(g);
+ CLIP(b);
+
+ *aDest++ = (TUint8) r;
+ *aDest++ = (TUint8) g;
+ *aDest++ = (TUint8) b;
+
+ y = (aSource[1] - 16);
+
+ r = ((298 * y + 409 * u) / 256);
+ g = ((298 * y - 100 * v - 208 * u) / 256);
+ b = ((298 * y + 516 * v) / 256);
+
+ CLIP(r);
+ CLIP(g);
+ CLIP(b);
+
+ *aDest++ = (TUint8) r;
+ *aDest++ = (TUint8) g;
+ *aDest++ = (TUint8) b;
+ aSource += 4;
+ }
+
+ aDest -= (aWidth * 3 * 2);
+ }
+ }
+
+/**
+Converts a 32 bit long from whatever the host format is into little endian format in a user supplied buffer.
+@param aBuffer Pointer to the buffer into which to write the value
+@param aLong The value to be written
+*/
+void RBitmap::PutLong(TUint8* aBuffer, TInt aLong)
+ {
+ *aBuffer++ = (TUint8) (aLong & 0xff);
+ *aBuffer++ = (TUint8) ((aLong >> 8) & 0xff);
+ *aBuffer++ = (TUint8) ((aLong >> 16) & 0xff);
+ *aBuffer++ = (TUint8) ((aLong >> 24) & 0xff);
+ }
+
+/**
+Converts a 16 bit short from whatever the host format is into little endian format in a user supplied buffer.
+@param aBuffer Pointer to the buffer into which to write the value
+@param aShort The value to be written
+*/
+void RBitmap::PutShort(TUint8* aBuffer, TInt16 aShort)
+ {
+ *aBuffer++ = (TUint8) (aShort & 0xff);
+ *aBuffer++ = (TUint8) ((aShort >> 8) & 0xff);
+ }
+
+/**
+Writes a standard Windows .bmp header to a file, including the standard .bmp file header, followed
+by a V3 DIB header.
+@param aFile A reference to the file to which to write the header
+@param aWidth The width of the bitmap in pixels
+@param aHeight The height of the bitmap in pixels
+@return KErrNone if write was successful, otherwise one of the other system wide error codes
+*/
+TInt RBitmap::WriteHeader(RFile& aFile, TInt aWidth, TInt aHeight)
+ {
+ TBuf8<14> header(14);
+ TUint8* buffer = (TUint8*) header.Ptr();
+
+ header.Fill(0);
+
+ header[0] = 'B';
+ header[1] = 'M';
+ PutLong((buffer + 2), (14 + 40 + (aWidth * aHeight * 3)));
+ PutLong((buffer + 10), (14 + 40));
+
+ TInt r = aFile.Write(header);
+
+ if (r == KErrNone)
+ {
+ TBuf8<40> bitmapInfoHeader(40);
+ TUint8* buffer = (TUint8*) bitmapInfoHeader.Ptr();
+
+ bitmapInfoHeader.Fill(0);
+
+ PutLong(buffer, 40);
+ PutLong((buffer + 4), aWidth);
+ PutLong((buffer + 8), aHeight);
+ PutShort((buffer + 12), 1);
+ PutShort((buffer + 14), 24);
+ PutLong((buffer + 20), (aWidth * aHeight * 3));
+
+ r = aFile.Write(bitmapInfoHeader);
+ }
+
+ return r;
+ }
+
+/**
+Converts a YUV422 or RGB565 buffer into 24 bit RGB format and writes it to a file.
+@param aFile A reference to the file to which to write the data
+@param aBuffer A pointer to the buffer containing the data to be converted and written
+@param aPixelFormat UID specifying the format of the source data
+@param aWidth The width of the data in the buffer in pixels
+@param aHeight The height of the data in the buffer in pixels
+@return KErrNone if write was successful, otherwise one of the other system wide error codes
+*/
+TInt RBitmap::WriteBitmapData(RFile& aFile, TUint8* aBuffer, SDevCamPixelFormat aPixelFormat, TInt aWidth, TInt aHeight)
+ {
+ TInt length = (aWidth * aHeight * 3);
+ TUint8* rgbBuffer = new TUint8[length];
+
+ TInt r = KErrNone;
+
+ if (rgbBuffer)
+ {
+ if (aPixelFormat.iPixelFormat == EUidPixelFormatYUV_422Interleaved)
+ {
+ YUVToRGB(rgbBuffer, aBuffer, aWidth, aHeight);
+ }
+ else if (aPixelFormat.iPixelFormat == EUidPixelFormatRGB_565)
+ {
+ RGBToRGB(rgbBuffer, aBuffer, aWidth, aHeight);
+ }
+ else
+ {
+ r = KErrNotSupported;
+ }
+
+ if (r == KErrNone)
+ {
+ TPtr8 buffer(rgbBuffer, length, length);
+ r = aFile.Write(buffer);
+ }
+
+ delete [] rgbBuffer;
+ }
+ else
+ {
+ r = KErrNoMemory;
+ }
+
+ return r;
+ }
+
+/**
+Converts a YUV422 or RGB565 buffer into 24 bit RGB format and writes it to a Windows .bmp file.
+@param aFileName A reference to the fully qualified name of the file to write the .bmp file to
+@param aBuffer A pointer to the buffer containing the data to be converted and written
+@param aPixelFormat UID specifying the format of the source data
+@param aWidth The width of the data in the buffer in pixels
+@param aHeight The height of the data in the buffer in pixels
+@return KErrNone if write was successful, otherwise one of the other system wide error codes
+*/
+TInt RBitmap::WriteBMP(const TDesC& aFileName, TUint8* aBuffer, SDevCamPixelFormat aPixelFormat, TInt aWidth, TInt aHeight)
+ {
+ TInt r;
+ RFile file;
+ RFs fs;
+
+ if ((r = fs.Connect()) == KErrNone)
+ {
+ if ((r = file.Replace(fs, aFileName, EFileWrite)) == KErrNone)
+ {
+ if ((r = WriteHeader(file, aWidth, aHeight)) == KErrNone)
+ {
+ r = WriteBitmapData(file, aBuffer, aPixelFormat, aWidth, aHeight);
+ }
+
+ file.Close();
+
+ // If anything went wrong, delete the file so that we do not leave partial files that
+ // might cause confusion
+ if (r != KErrNone)
+ {
+ fs.Delete(aFileName);
+ }
+ }
+
+ fs.Close();
+ }
+
+ return r;
+ }
+
+/**
+Dumps a buffer straight to disk, without any kind of processing.
+@param aFileName A reference to the fully qualified name of the file to write the file to
+@param aBuffer A pointer to the buffer containing the data to be converted written
+@param aSize The size of the buffer to be written, in bytes
+@return KErrNone if write was successful, otherwise one of the other system wide error codes
+*/
+TInt RBitmap::WriteBuffer(const TDesC& aFileName, TUint8* aBuffer, TInt aSize)
+ {
+ TInt r;
+ RFile file;
+ RFs fs;
+
+ if ((r = fs.Connect()) == KErrNone)
+ {
+ if ((r = file.Replace(fs, aFileName, EFileWrite)) == KErrNone)
+ {
+ TPtrC8 buffer(aBuffer, aSize);
+
+ r = file.Write(buffer);
+
+ file.Close();
+
+ // If anything went wrong, delete the file so that we do not leave partial files that
+ // might cause confusion
+ if (r != KErrNone)
+ {
+ fs.Delete(aFileName);
+ }
+ }
+
+ fs.Close();
+ }
+
+ return r;
+ }