/*
- * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
// INTERNAL INCLUDES
#include "pixel-manipulation.h"
#include "alpha-mask.h"
+#include "gaussian-blur.h"
+#include <platform-abstractions/portable/image-operations.h>
+#include <platform-abstractions/portable/pixel-manipulation.h>
namespace Dali
{
unsigned int width,
unsigned int height,
Dali::Pixel::Format pixelFormat )
-: mBuffer( buffer ),
+: mMetadata(),
+ mBuffer( buffer ),
mBufferSize( bufferSize ),
mWidth( width ),
mHeight( height ),
return pixelData;
}
-void PixelBuffer::ApplyMask( const PixelBuffer& mask )
+void PixelBuffer::ApplyMask( const PixelBuffer& inMask, float contentScale, bool cropToMask )
+{
+ if( cropToMask )
+ {
+ // First scale this buffer by the contentScale, and crop to the mask size
+ // If it's too small, then scale the mask to match the image size
+ // Then apply the mask
+ ScaleAndCrop( contentScale, ImageDimensions( inMask.GetWidth(), inMask.GetHeight() ) );
+
+ if( inMask.mWidth > mWidth || inMask.mHeight > mHeight )
+ {
+ PixelBufferPtr mask = NewResize( inMask, ImageDimensions( mWidth, mHeight ) );
+ ApplyMaskInternal( *mask );
+ }
+ else
+ {
+ ApplyMaskInternal( inMask );
+ }
+ }
+ else
+ {
+ // First, scale the mask to match the image size,
+ // then apply the mask.
+ PixelBufferPtr mask = NewResize( inMask, ImageDimensions( mWidth, mHeight ) );
+ ApplyMaskInternal( *mask );
+ }
+}
+
+void PixelBuffer::ApplyMaskInternal( const PixelBuffer& mask )
{
int byteOffset=0;
int bitMask=0;
Dali::Pixel::GetAlphaOffsetAndMask(mPixelFormat, byteOffset, bitMask);
-
if( Dali::Pixel::HasAlpha( mPixelFormat ) && bitMask == 255 )
{
ApplyMaskToAlphaChannel( *this, mask );
else
{
PixelBufferPtr newPixelBuffer = CreateNewMaskedBuffer( *this, mask );
- ReleaseBuffer();
-
- // Take ownership of new buffer
- mBuffer = newPixelBuffer->mBuffer;
- newPixelBuffer->mBuffer = NULL;
- mPixelFormat = newPixelBuffer->mPixelFormat;
- mBufferSize = newPixelBuffer->mBufferSize;
-
+ TakeOwnershipOfBuffer( *newPixelBuffer );
// On leaving scope, newPixelBuffer will get destroyed.
}
}
+void PixelBuffer::TakeOwnershipOfBuffer( PixelBuffer& pixelBuffer )
+{
+ ReleaseBuffer();
+
+ // Take ownership of new buffer
+ mBuffer = pixelBuffer.mBuffer;
+ pixelBuffer.mBuffer = NULL;
+ mBufferSize = pixelBuffer.mBufferSize;
+ mWidth = pixelBuffer.mWidth;
+ mHeight = pixelBuffer.mHeight;
+ mPixelFormat = pixelBuffer.mPixelFormat;
+}
+
void PixelBuffer::ReleaseBuffer()
{
if( mBuffer )
}
}
+void PixelBuffer::AllocateFixedSize( uint32_t size )
+{
+ ReleaseBuffer();
+ mBuffer = reinterpret_cast<unsigned char*>(malloc( size ));
+ mBufferSize = size;
+}
+
+void PixelBuffer::ScaleAndCrop( float scaleFactor, ImageDimensions cropDimensions )
+{
+ ImageDimensions outDimensions( float(mWidth) * scaleFactor,
+ float(mHeight) * scaleFactor );
+
+ if( outDimensions.GetWidth() != mWidth || outDimensions.GetHeight() != mHeight )
+ {
+ Resize( outDimensions );
+ }
+
+ ImageDimensions postCropDimensions(
+ std::min(cropDimensions.GetWidth(), outDimensions.GetWidth()),
+ std::min(cropDimensions.GetHeight(), outDimensions.GetHeight()));
+
+ if( postCropDimensions.GetWidth() < outDimensions.GetWidth() ||
+ postCropDimensions.GetHeight() < outDimensions.GetHeight() )
+ {
+ uint16_t x = ( outDimensions.GetWidth() - postCropDimensions.GetWidth() ) / 2;
+ uint16_t y = ( outDimensions.GetHeight() - postCropDimensions.GetHeight() ) / 2;
+ Crop( x, y, postCropDimensions );
+ }
+}
+
+void PixelBuffer::Crop( uint16_t x, uint16_t y, ImageDimensions cropDimensions )
+{
+ PixelBufferPtr outBuffer = NewCrop( *this, x, y, cropDimensions );
+ TakeOwnershipOfBuffer( *outBuffer );
+}
+
+PixelBufferPtr PixelBuffer::NewCrop( const PixelBuffer& inBuffer, uint16_t x, uint16_t y, ImageDimensions cropDimensions )
+{
+ PixelBufferPtr outBuffer = PixelBuffer::New( cropDimensions.GetWidth(), cropDimensions.GetHeight(), inBuffer.GetPixelFormat() );
+ int bytesPerPixel = Pixel::GetBytesPerPixel( inBuffer.mPixelFormat );
+ int srcStride = inBuffer.mWidth * bytesPerPixel;
+ int destStride = cropDimensions.GetWidth() * bytesPerPixel;
+
+ // Clamp crop to right edge
+ if( x + cropDimensions.GetWidth() > inBuffer.mWidth )
+ {
+ destStride = ( inBuffer.mWidth - x ) * bytesPerPixel;
+ }
+
+ int srcOffset = x * bytesPerPixel + y * srcStride;
+ int destOffset = 0;
+ unsigned char* destBuffer = outBuffer->mBuffer;
+
+ // Clamp crop to last row
+ unsigned int endRow = y + cropDimensions.GetHeight();
+ if( endRow > inBuffer.mHeight )
+ {
+ endRow = inBuffer.mHeight - 1 ;
+ }
+ for( uint16_t row = y; row < endRow; ++row )
+ {
+ memcpy(destBuffer + destOffset, inBuffer.mBuffer + srcOffset, destStride );
+ srcOffset += srcStride;
+ destOffset += destStride;
+ }
+ return outBuffer;
+
+}
+
+void PixelBuffer::SetMetadata( const Property::Map& map )
+{
+ mMetadata.reset(new Property::Map(map));
+}
+
+bool PixelBuffer::GetMetadata(Property::Map& outMetadata) const
+{
+ if( !mMetadata )
+ {
+ return false;
+ }
+ outMetadata = *mMetadata;
+ return true;
+}
+
+void PixelBuffer::SetMetadata(std::unique_ptr<Property::Map> metadata)
+{
+ mMetadata = std::move(metadata);
+}
+
+void PixelBuffer::Resize( ImageDimensions outDimensions )
+{
+ if( mWidth != outDimensions.GetWidth() || mHeight != outDimensions.GetHeight() )
+ {
+ PixelBufferPtr outBuffer = NewResize( *this, outDimensions );
+ TakeOwnershipOfBuffer( *outBuffer );
+ }
+}
+
+PixelBufferPtr PixelBuffer::NewResize( const PixelBuffer& inBuffer, ImageDimensions outDimensions )
+{
+ PixelBufferPtr outBuffer = PixelBuffer::New( outDimensions.GetWidth(), outDimensions.GetHeight(), inBuffer.GetPixelFormat() );
+ ImageDimensions inDimensions( inBuffer.mWidth, inBuffer.mHeight );
+
+ bool hasAlpha = Pixel::HasAlpha( inBuffer.mPixelFormat );
+ int bytesPerPixel = Pixel::GetBytesPerPixel( inBuffer.mPixelFormat );
+
+ Resampler::Filter filterType = Resampler::LANCZOS4;
+ if( inDimensions.GetWidth() < outDimensions.GetWidth() && inDimensions.GetHeight() < outDimensions.GetHeight() )
+ {
+ filterType = Resampler::MITCHELL;
+ }
+
+ // This method only really works for 8 bit wide channels.
+ // (But could be expanded to work)
+ if( inBuffer.mPixelFormat == Pixel::A8 ||
+ inBuffer.mPixelFormat == Pixel::L8 ||
+ inBuffer.mPixelFormat == Pixel::LA88 ||
+ inBuffer.mPixelFormat == Pixel::RGB888 ||
+ inBuffer.mPixelFormat == Pixel::RGB8888 ||
+ inBuffer.mPixelFormat == Pixel::BGR8888 ||
+ inBuffer.mPixelFormat == Pixel::RGBA8888 ||
+ inBuffer.mPixelFormat == Pixel::BGRA8888 )
+ {
+ Dali::Internal::Platform::Resample( inBuffer.mBuffer, inDimensions,
+ outBuffer->GetBuffer(), outDimensions,
+ filterType, bytesPerPixel, hasAlpha );
+ }
+ else
+ {
+ DALI_LOG_ERROR( "Trying to resize an image with too narrow a channel width" );
+ }
+
+ return outBuffer;
+}
+
+void PixelBuffer::ApplyGaussianBlur( const float blurRadius )
+{
+ // This method only works for pixel buffer in RGBA format.
+ if( mWidth > 0 && mHeight > 0 && mPixelFormat == Pixel::RGBA8888 )
+ {
+ if ( blurRadius > Math::MACHINE_EPSILON_1 )
+ {
+ PerformGaussianBlurRGBA( *this, blurRadius );
+ }
+ }
+ else
+ {
+ DALI_LOG_ERROR( "Trying to apply gaussian blur to an empty pixel buffer or a pixel buffer not in RGBA format" );
+ }
+}
+
+void PixelBuffer::MultiplyColorByAlpha()
+{
+ auto bytesPerPixel = Pixel::GetBytesPerPixel( mPixelFormat );
+
+ // Compressed textures have unknown size of the pixel. Alpha premultiplication
+ // must be skipped in such case
+ if( Pixel::GetBytesPerPixel(mPixelFormat) && Pixel::HasAlpha(mPixelFormat) )
+ {
+ unsigned char* pixel = mBuffer;
+ const unsigned int bufferSize = mWidth * mHeight;
+
+ for( unsigned int i=0; i<bufferSize; ++i )
+ {
+ unsigned int alpha = ReadChannel( pixel, mPixelFormat, Adaptor::ALPHA );
+ {
+ auto red = ReadChannel( pixel, mPixelFormat, Adaptor::RED);
+ auto green = ReadChannel( pixel, mPixelFormat, Adaptor::GREEN);
+ auto blue = ReadChannel( pixel, mPixelFormat, Adaptor::BLUE);
+ auto luminance = ReadChannel( pixel, mPixelFormat, Adaptor::LUMINANCE);
+ WriteChannel( pixel, mPixelFormat, Adaptor::RED, red*alpha / 255 );
+ WriteChannel( pixel, mPixelFormat, Adaptor::GREEN, green*alpha/255 );
+ WriteChannel( pixel, mPixelFormat, Adaptor::BLUE, blue*alpha/255 );
+ WriteChannel( pixel, mPixelFormat, Adaptor::LUMINANCE, luminance*alpha/255 );
+ }
+ pixel += bytesPerPixel;
+ }
+ }
+}
+
+
+
}// namespace Adaptor
}// namespace Internal
projects / platform / core / uifw / dali-adaptor.git / blobdiff