dali/internal/imaging/macos/native-image-source-impl-mac.cpp

   1 /*
   2  * Copyright (c) 2020 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/imaging/macos/native-image-source-impl-mac.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/integration-api/debug.h>
  23
  24 // INTERNAL INCLUDES
  25 #include <dali/internal/graphics/common/egl-image-extensions.h>
  26 #include <dali/internal/graphics/gles/egl-graphics.h>
  27 #include <dali/internal/adaptor/common/adaptor-impl.h>
  28 #include <dali/integration-api/adaptor-framework/render-surface-interface.h>
  29
  30 namespace Dali::Internal::Adaptor
  31 {
  32
  33 using Dali::Integration::PixelBuffer;
  34
  35 NativeImageSourceCocoa* NativeImageSourceCocoa::New(
  36   unsigned int width,
  37   unsigned int height,
  38   Dali::NativeImageSource::ColorDepth depth,
  39   Any nativeImageSource
  40 )
  41 {
  42   return new NativeImageSourceCocoa( width, height, depth, nativeImageSource );
  43 }
  44
  45 NativeImageSourceCocoa::NativeImageSourceCocoa(
  46   unsigned int width,
  47   unsigned int height,
  48   Dali::NativeImageSource::ColorDepth depth,
  49   Any nativeImageSource
  50 )
  51 : mImage(MakeRef<CGImageRef>(nullptr))
  52 {
  53   DALI_ASSERT_ALWAYS( Adaptor::IsAvailable() );
  54   DALI_ASSERT_ALWAYS( nativeImageSource.Empty() );
  55
  56   CFStringRef colorSpaceName;
  57   CGImageAlphaInfo alphaInfo;
  58   std::size_t bitsPerPixel;
  59
  60   switch (depth)
  61   {
  62     case Dali::NativeImageSource::COLOR_DEPTH_8:
  63       colorSpaceName = kCGColorSpaceGenericGray;
  64       alphaInfo = kCGImageAlphaNone;
  65       bitsPerPixel = 8;
  66       break;
  67     case Dali::NativeImageSource::COLOR_DEPTH_16:
  68       colorSpaceName = kCGColorSpaceSRGB;
  69       alphaInfo = kCGImageAlphaNone;
  70       bitsPerPixel = 16;
  71       break;
  72     case Dali::NativeImageSource::COLOR_DEPTH_24:
  73       colorSpaceName = kCGColorSpaceSRGB;
  74       alphaInfo = kCGImageAlphaNone;
  75       bitsPerPixel = 24;
  76       break;
  77     case Dali::NativeImageSource::COLOR_DEPTH_32:
  78     default:
  79       colorSpaceName = kCGColorSpaceSRGB;
  80       alphaInfo = kCGImageAlphaLast;
  81       bitsPerPixel = 32;
  82       break;
  83   }
  84
  85   // round to next 16 bytes boundary
  86   std::size_t bytesPerRow = width & ~0xf;
  87   bytesPerRow = bytesPerRow ? bytesPerRow + 16 : width;
  88
  89   auto dataProvider = MakeRef(CGDataProviderCreateWithData(nullptr, nullptr, 0, nullptr));
  90   auto colorSpace = MakeRef(CGColorSpaceCreateWithName(colorSpaceName));
  91   mImage = MakeRef(CGImageCreate(
  92     width,
  93     height,
  94     8,
  95     bitsPerPixel,
  96     bytesPerRow,
  97     colorSpace.get(),
  98     alphaInfo,
  99     dataProvider.get(),
 100     nullptr,
 101     true,
 102     kCGRenderingIntentDefault
 103   ));
 104
 105   if (mImage)
 106   {
 107     colorSpace.release();
 108     dataProvider.release();
 109   }
 110
 111   DALI_ASSERT_ALWAYS(mImage.get());
 112 }
 113
 114 NativeImageSourceCocoa::~NativeImageSourceCocoa()
 115 {
 116 }
 117
 118 Any NativeImageSourceCocoa::GetNativeImageSource() const
 119 {
 120   return Any();
 121 }
 122
 123 bool NativeImageSourceCocoa::GetPixels(
 124   std::vector<uint8_t>& pixbuf,
 125   unsigned& width, unsigned& height,
 126   Pixel::Format& pixelFormat
 127 ) const
 128 {
 129   width  = CGImageGetWidth(mImage.get());
 130   height = CGImageGetHeight(mImage.get());
 131   return true;
 132 }
 133
 134 void NativeImageSourceCocoa::SetSource( Any source )
 135 {
 136 }
 137
 138 bool NativeImageSourceCocoa::IsColorDepthSupported( Dali::NativeImageSource::ColorDepth colorDepth )
 139 {
 140   return true;
 141 }
 142
 143 bool NativeImageSourceCocoa::CreateResource()
 144 {
 145   return false;
 146 }
 147
 148 void NativeImageSourceCocoa::DestroyResource()
 149 {
 150 }
 151
 152 unsigned int NativeImageSourceCocoa::TargetTexture()
 153 {
 154   return 0;
 155 }
 156
 157 void NativeImageSourceCocoa::PrepareTexture()
 158 {
 159 }
 160
 161 const char* NativeImageSourceCocoa::GetCustomFragmentPrefix() const
 162 {
 163   return nullptr;
 164 }
 165
 166 const char* NativeImageSourceCocoa::GetCustomSamplerTypename() const
 167 {
 168   return nullptr;
 169 }
 170
 171 int NativeImageSourceCocoa::GetTextureTarget() const
 172 {
 173   return GL_TEXTURE_2D;
 174 }
 175
 176 Any NativeImageSourceCocoa::GetNativeImageHandle() const
 177 {
 178   return Any(mImage.get());
 179 }
 180
 181 unsigned int NativeImageSourceCocoa::GetWidth() const
 182 {
 183   return CGImageGetWidth(mImage.get());
 184 }
 185
 186 unsigned int NativeImageSourceCocoa::GetHeight() const
 187 {
 188   return CGImageGetHeight(mImage.get());
 189 }
 190
 191 bool NativeImageSourceCocoa::RequiresBlending() const
 192 {
 193   const auto alphaInfo = CGImageGetAlphaInfo(mImage.get());
 194   return
 195     alphaInfo != kCGImageAlphaNone
 196     && alphaInfo != kCGImageAlphaNoneSkipFirst
 197     && alphaInfo != kCGImageAlphaNoneSkipLast;
 198 }
 199
 200 bool NativeImageSourceCocoa::SourceChanged() const
 201 {
 202   return false;
 203 }
 204
 205 uint8_t* NativeImageSourceCocoa::AcquireBuffer( uint16_t& width, uint16_t& height, uint16_t& stride )
 206 {
 207   return nullptr;
 208 }
 209
 210
 211 bool NativeImageSourceCocoa::ReleaseBuffer()
 212 {
 213   return false;
 214 }
 215
 216 } // namespace Dali::Internal::Adaptor