dali/internal/imaging/common/native-bitmap-buffer-impl.h

   1 #ifndef DALI_NATIVE_BITMAP_BUFFER_H
   2 #define DALI_NATIVE_BITMAP_BUFFER_H
   3
   4 /*
   5  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  * http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  */
  20
  21 // EXTERNAL HEADERS
  22 #include <dali/integration-api/gl-abstraction.h>
  23 #include <dali/integration-api/lockless-buffer.h>
  24 #include <dali/public-api/common/dali-vector.h>
  25 #include <dali/public-api/images/native-image-interface.h>
  26 #include <dali/public-api/images/pixel.h>
  27
  28 // INTERNAL HEADERS
  29 #include <dali/internal/adaptor/common/adaptor-impl.h>
  30 #include <dali/internal/graphics/common/graphics-interface.h>
  31
  32 namespace Dali
  33 {
  34 namespace Internal
  35 {
  36 namespace Adaptor
  37 {
  38 class NativeBitmapBuffer;
  39 typedef IntrusivePtr<NativeBitmapBuffer> NativeBitmapBufferPtr;
  40
  41 /**
  42  * A Bitmap-based implementation of the NativeImage interface.
  43  */
  44 class NativeBitmapBuffer : public NativeImageInterface
  45 {
  46 public:
  47   /**
  48    * Constructor.
  49    * @param adaptor Adaptor used
  50    * @param width width of image
  51    * @param height height of image
  52    * @param pixelFormat pixel format for image
  53    */
  54   NativeBitmapBuffer(Adaptor* adaptor, unsigned int width, unsigned int height, Pixel::Format pixelFormat);
  55
  56   /**
  57    * virtual destructor
  58    */
  59   virtual ~NativeBitmapBuffer();
  60
  61   /**
  62    * Write to buffer. Does not block.
  63    * @param[in] src  data source
  64    * @param[in] size size of data in bytes
  65    * @return true if successful, false if currently reading from buffer in render thread
  66    */
  67   void Write(const unsigned char* src, size_t size);
  68
  69 public:
  70   /**
  71    * @copydoc Dali::NativeImageInterface::CreateResource()
  72    */
  73   bool CreateResource() override;
  74
  75   /**
  76    * @copydoc Dali::NativeImageInterface::DestroyResource()
  77    */
  78   void DestroyResource() override;
  79
  80   /**
  81    * @copydoc Dali::NativeImageInterface::TargetTexture()
  82    */
  83   unsigned int TargetTexture() override;
  84
  85   /**
  86    * @copydoc Dali::NativeImageInterface::PrepareTexture()
  87    */
  88   void PrepareTexture() override;
  89
  90   /**
  91    * @copydoc Dali::NativeImageInterface::GetWidth()
  92    */
  93   unsigned int GetWidth() const override;
  94
  95   /**
  96    * @copydoc Dali::NativeImageInterface::GetHeight()
  97    */
  98   unsigned int GetHeight() const override;
  99
 100   /**
 101    * @copydoc Dali::NativeImageInterface::RequiresBlending()
 102    */
 103   bool RequiresBlending() const override;
 104
 105   /**
 106    * @copydoc Dali::NativeImageInterface::RequiresBlending()
 107    */
 108   int GetTextureTarget() const override;
 109
 110   /**
 111    * @copydoc Dali::NativeImageInterface::ApplyNativeFragmentShader()
 112    */
 113   bool ApplyNativeFragmentShader(std::string& shader) override;
 114
 115   /**
 116    * @copydoc Dali::NativeImageInterface::GetCustomSamplerTypename()
 117    */
 118   const char* GetCustomSamplerTypename() const override;
 119
 120   /**
 121    * @copydoc Dali::NativeImageInterface::GetNativeImageHandle()
 122    */
 123   Any GetNativeImageHandle() const override;
 124
 125   /**
 126    * @copydoc Dali::NativeImageInterface::SourceChanged()
 127    */
 128   bool SourceChanged() const override;
 129
 130   /**
 131    * @copydoc Dali::NativeImageInterface::GetUpdatedArea()
 132    */
 133   Rect<uint32_t> GetUpdatedArea() override
 134   {
 135     return Rect<uint32_t>{0, 0, mWidth, mHeight};
 136   }
 137
 138 private:
 139   NativeBitmapBuffer(const NativeBitmapBuffer&);            ///< not defined
 140   NativeBitmapBuffer& operator=(const NativeBitmapBuffer&); ///< not defined
 141   NativeBitmapBuffer();                                     ///< not defined
 142
 143 private:
 144   Integration::GlAbstraction* mGlAbstraction; ///< GlAbstraction used
 145
 146   Integration::LocklessBuffer* mBuffer;         ///< bitmap data double buffered
 147   unsigned int                 mWidth;          ///< Image width
 148   unsigned int                 mHeight;         ///< Image height
 149   Pixel::Format                mPixelFormat;    ///< Image pixelformat
 150   const unsigned char*         mLastReadBuffer; ///< last buffer that was read
 151 };
 152
 153 } // namespace Adaptor
 154
 155 } // namespace Internal
 156
 157 } // namespace Dali
 158
 159 #endif // DALI_NATIVE_BITMAP_BUFFER_H