#include "pixel-manipulation.h"
#include "alpha-mask.h"
#include "pixel-buffer-impl.h"
+#include <dali/public-api/images/image-operations.h> // For ImageDimensions
+#include <platform-abstractions/portable/image-operations.h>
namespace Dali
{
namespace Adaptor
{
-
-void ApplyMaskToAlphaChannel( PixelBuffer& buffer, const PixelBuffer& mask )
+PixelBufferPtr ResizeMask( const PixelBuffer& inMask, ImageDimensions outDimensions )
{
- const float rowFactor = float(mask.GetHeight()) / (1.0f * buffer.GetHeight());
- const float colFactor = float(mask.GetWidth()) / (1.0f * buffer.GetWidth()) ;
+ PixelBufferPtr mask;
+
+ if( inMask.GetWidth() != outDimensions.GetWidth() || inMask.GetHeight() != outDimensions.GetHeight() )
+ {
+ mask = PixelBuffer::New( outDimensions.GetWidth(), outDimensions.GetHeight(), inMask.GetPixelFormat() );
+ ImageDimensions inDimensions( inMask.GetWidth(), inMask.GetHeight() );
- int numSamples = 1;
- if( mask.GetHeight() > buffer.GetHeight() || mask.GetWidth() > buffer.GetWidth() )
+ if( Pixel::GetBytesPerPixel( inMask.GetPixelFormat() ) == 4 )
+ {
+ Dali::Internal::Platform::LanczosSample4BPP( inMask.GetBuffer(), inDimensions,
+ mask->GetBuffer(), outDimensions );
+ }
+ else if( inMask.GetPixelFormat() == Pixel::L8 )
+ {
+ Dali::Internal::Platform::LanczosSample1BPP( inMask.GetBuffer(), inDimensions,
+ mask->GetBuffer(), outDimensions );
+ }
+ }
+ else
{
- numSamples = 4;
+ mask = const_cast<PixelBuffer*>(&inMask);
}
+ return mask;
+}
+void ApplyMaskToAlphaChannel( PixelBuffer& buffer, const PixelBuffer& inMask )
+{
int srcAlphaByteOffset=0;
int srcAlphaMask=0;
- Dali::Pixel::Format srcPixelFormat = mask.GetPixelFormat();
+ Dali::Pixel::Format srcPixelFormat = inMask.GetPixelFormat();
+
+ PixelBufferPtr mask = ResizeMask( inMask, ImageDimensions( buffer.GetWidth(), buffer.GetHeight() ) );
- Channel alphaChannel = ALPHA;
if( Pixel::HasAlpha(srcPixelFormat) )
{
Dali::Pixel::GetAlphaOffsetAndMask( srcPixelFormat, srcAlphaByteOffset, srcAlphaMask );
else if( srcPixelFormat == Pixel::L8 )
{
srcAlphaMask=0xFF;
- alphaChannel = LUMINANCE;
}
int destAlphaByteOffset=0;
Dali::Pixel::GetAlphaOffsetAndMask( buffer.GetPixelFormat(), destAlphaByteOffset, destAlphaMask );
unsigned int srcBytesPerPixel = Dali::Pixel::GetBytesPerPixel( srcPixelFormat );
- int srcStride = mask.GetWidth() * srcBytesPerPixel;
- unsigned char* srcBuffer = mask.GetBuffer();
+ unsigned char* srcBuffer = mask->GetBuffer();
unsigned char* destBuffer = buffer.GetBuffer();
unsigned int destBytesPerPixel = Dali::Pixel::GetBytesPerPixel( buffer.GetPixelFormat() );
{
for( unsigned int col = 0; col < buffer.GetWidth(); ++col )
{
- if( numSamples == 1 )
- {
- srcOffset = floorf(row * rowFactor) * srcStride + floorf(col * colFactor) * srcBytesPerPixel;
- unsigned char alpha = srcBuffer[srcOffset + srcAlphaByteOffset] & srcAlphaMask;
- srcAlphaValue = float(alpha)/255.0f;
- }
- else
- {
- srcAlphaValue = ReadWeightedSample( srcBuffer, srcPixelFormat, srcStride, col*colFactor, row*rowFactor, mask.GetWidth(), mask.GetHeight(), alphaChannel );
- }
+ unsigned char alpha = srcBuffer[srcOffset + srcAlphaByteOffset] & srcAlphaMask;
+ srcAlphaValue = float(alpha)/255.0f;
unsigned char destAlpha = destBuffer[destOffset + destAlphaByteOffset] & destAlphaMask;
float destAlphaValue = Clamp(float(destAlpha) * srcAlphaValue, 0.0f, 255.0f);
destBuffer[destOffset + destAlphaByteOffset] &= ~destAlphaMask;
destBuffer[destOffset + destAlphaByteOffset] |= ( destAlpha & destAlphaMask );
+ srcOffset += srcBytesPerPixel;
destOffset += destBytesPerPixel;
}
}
}
-PixelBufferPtr CreateNewMaskedBuffer( const PixelBuffer& buffer, const PixelBuffer& mask )
+PixelBufferPtr CreateNewMaskedBuffer( const PixelBuffer& buffer, const PixelBuffer& inMask )
{
- const float rowFactor = float(mask.GetHeight()) / (1.0f * buffer.GetHeight());
- const float colFactor = float(mask.GetWidth()) / (1.0f * buffer.GetWidth()) ;
-
- int numSamples = 1;
- if( mask.GetHeight() > buffer.GetHeight() || mask.GetWidth() > buffer.GetWidth() )
- {
- numSamples = 4;
- }
-
// Set up source alpha offsets
int srcAlphaByteOffset=0;
int srcAlphaMask=0;
- Dali::Pixel::Format srcPixelFormat = mask.GetPixelFormat();
- Channel alphaChannel = ALPHA;
+ Dali::Pixel::Format srcPixelFormat = inMask.GetPixelFormat();
+
+ PixelBufferPtr mask = ResizeMask( inMask, ImageDimensions( buffer.GetWidth(), buffer.GetHeight() ) );
if( Pixel::HasAlpha(srcPixelFormat) )
{
Dali::Pixel::GetAlphaOffsetAndMask( srcPixelFormat, srcAlphaByteOffset, srcAlphaMask );
else if( srcPixelFormat == Pixel::L8 )
{
srcAlphaMask=0xFF;
- alphaChannel = LUMINANCE;
}
unsigned int srcBytesPerPixel = Dali::Pixel::GetBytesPerPixel( srcPixelFormat );
- int srcStride = mask.GetWidth() * srcBytesPerPixel;
- unsigned char* srcBuffer = mask.GetBuffer();
+ unsigned char* srcBuffer = mask->GetBuffer();
// Set up source color offsets
Dali::Pixel::Format srcColorPixelFormat = buffer.GetPixelFormat();
PixelBufferPtr newPixelBuffer = PixelBuffer::New( buffer.GetWidth(), buffer.GetHeight(),
destPixelFormat );
unsigned char* destBuffer = newPixelBuffer->GetBuffer();
-
unsigned char* oldBuffer = buffer.GetBuffer();
int srcAlphaOffset=0;
{
for( unsigned int col = 0; col < buffer.GetWidth(); ++col )
{
- if( numSamples == 1 )
- {
- srcAlphaOffset = floorf(row * rowFactor) * srcStride + floorf(col * colFactor) * srcBytesPerPixel;
- unsigned char alpha = srcBuffer[srcAlphaOffset + srcAlphaByteOffset] & srcAlphaMask;
- srcAlphaValue = float(alpha)/255.0f;
- }
- else
- {
- srcAlphaValue = ReadWeightedSample( srcBuffer, srcPixelFormat, srcStride, col*colFactor, row*rowFactor, mask.GetWidth(), mask.GetHeight(), alphaChannel );
- }
+ unsigned char alpha = srcBuffer[srcAlphaOffset + srcAlphaByteOffset] & srcAlphaMask;
+ srcAlphaValue = float(alpha)/255.0f;
ConvertColorChannelsToRGBA8888(oldBuffer, srcColorOffset, srcColorPixelFormat, destBuffer, destOffset );
destBuffer[destOffset + destAlphaByteOffset] |= ( destAlpha & destAlphaMask );
srcColorOffset += srcColorBytesPerPixel;
+ srcAlphaOffset += srcBytesPerPixel;
destOffset += destBytesPerPixel;
}
}
return newPixelBuffer;
}
-
-float ReadWeightedSample( unsigned char* buffer, Pixel::Format pixelFormat, int stride, float x, float y, int width, int height, Channel alphaChannel )
-{
- int srcRow = floorf( y );
- int srcCol = floorf( x );
-
- int bytesPerPixel = Dali::Pixel::GetBytesPerPixel( pixelFormat );
- int srcOffset = srcRow * stride + srcCol * bytesPerPixel;
- float samples[4];
-
- samples[0] = ReadChannel( buffer + srcOffset, pixelFormat, alphaChannel );
-
- if( srcCol < width-1 )
- {
- samples[1] = ReadChannel( buffer + srcOffset+bytesPerPixel, pixelFormat, alphaChannel );
- }
- else
- {
- samples[1] = samples[0];
- }
-
- if( srcRow < height-1 )
- {
- samples[2] = ReadChannel( buffer + stride + srcOffset, pixelFormat, alphaChannel );
- }
- else
- {
- samples[2] = samples[0];
- }
-
- if( srcRow < height-1 && srcCol < width-1 )
- {
- samples[3] = ReadChannel( buffer + stride + srcOffset + bytesPerPixel, pixelFormat, alphaChannel );
- }
- else
- {
- samples[3] = samples[2];
- }
-
- // Bilinear interpolation:
- float weight[4];
- weight[0] = float(srcRow+1.0f) - y;
- weight[1] = y - float(srcRow);
- weight[2] = float(srcCol+1.0f) - x;
- weight[3] = x - float(srcCol);
-
- return ( weight[2] * (samples[0] * weight[0] + samples[1] * weight[1]) +
- weight[3] * (samples[2] * weight[0] + samples[3] * weight[1]) ) / 255.0f;
-}
-
} //namespace Adaptor
}// namespace Internal
projects / platform / core / uifw / dali-adaptor.git / blobdiff