1 #ifndef __DALI_INTEGRATION_NATIVE_IMAGE_INTERFACE_H__
2 #define __DALI_INTEGRATION_NATIVE_IMAGE_INTERFACE_H__
5 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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.
25 #include <dali/public-api/object/ref-object.h>
30 * @addtogroup dali_core_images
35 * @brief Abstract interface to provide platform-specific support for handling image data.
37 * For example, an implementation could use EGL extensions, etc.
39 class NativeImageInterface : public Dali::RefObject
43 class Extension; ///< Forward declare future extension interface
46 * @brief Create the GL resource for the NativeImage.
48 * e.g. For the EglImageKHR extension, this corresponds to calling eglCreateImageKHR()
49 * @pre There is a GL context for the current thread.
50 * @return false If the initialization fails.
52 virtual bool GlExtensionCreate() = 0;
55 * @brief Destroy the GL resource for the NativeImage.
57 * e.g. For the EglImageKHR extension, this corresponds to calling eglDestroyImageKHR()
58 * @pre There is a GL context for the current thread.
60 virtual void GlExtensionDestroy() = 0;
63 * @brief Use the NativeImage as a texture for rendering.
65 * @pre There is a GL context for the current thread.
66 * @return A GL error code
68 virtual unsigned int TargetTexture() = 0;
71 * @brief Called in each NativeTexture::Bind() call to allow implementation specific operations.
73 * The correct texture sampler has already been bound before the function gets called.
74 * @pre glAbstraction is being used by context in current thread
76 virtual void PrepareTexture() = 0;
79 * @brief Returns the width of the NativeImage.
83 virtual unsigned int GetWidth() const = 0;
86 * @brief Returns the height of the NativeImage.
90 virtual unsigned int GetHeight() const = 0;
93 * Query whether blending is required
95 virtual bool RequiresBlending() const = 0;
98 * @brief Retrieve the extension for the interface.
100 * @return The extension if available, NULL otherwise
102 virtual Extension* GetExtension()
110 * @brief A reference counted object may only be deleted by calling Unreference().
112 * The implementation should destroy the NativeImage resources.
114 virtual ~NativeImageInterface()
121 * @brief Pointer to Dali::NativeImageInterface
123 typedef IntrusivePtr<NativeImageInterface> NativeImageInterfacePtr;
130 #endif // __DALI_INTEGRATION_NATIVE_IMAGE_INTERFACE_H__