+++ /dev/null
-/*
- * Copyright (c) 2014 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.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// CLASS HEADER
-#include <dali/integration-api/image-data.h>
-
-// INTERNAL INCLUDES
-
-// EXTERNAL INCLUDES
-
-namespace Dali
-{
-
-namespace Integration
-{
-
-ImageData::ImageData( const size_t numBytes, const unsigned imageWidth, const unsigned imageHeight, const Pixel::Format pixelFormat ) :
- mData( new uint8_t[numBytes] ),
- dataSize( numBytes ),
- imageWidth( imageWidth ),
- imageHeight( imageHeight ),
- pixelFormat( pixelFormat ),
- mAlphaChannelUsed( ALPHA_USAGE_UNDETERMINED )
-{
- DALI_ASSERT_DEBUG( numBytes > 0U && imageWidth > 0U && imageHeight > 0U );
-}
-
-ImageData::ImageData( uint8_t * const imageBuffer, const size_t numBytes, const unsigned imageWidth, const unsigned imageHeight, const Pixel::Format pixelFormat ) :
- mData( imageBuffer ),
- dataSize( numBytes ),
- imageWidth( imageWidth ),
- imageHeight( imageHeight ),
- pixelFormat( pixelFormat ),
- mAlphaChannelUsed( ALPHA_USAGE_UNDETERMINED )
-{
- DALI_ASSERT_DEBUG( imageBuffer != 0 && numBytes > 0U && imageWidth > 0U && imageHeight > 0U );
-}
-
-ImageData::~ImageData()
-{
- delete[] mData;
-}
-
-ImageDataPtr ImageData::New( const BufferSize numBytes, unsigned imageWidth, unsigned imageHeight, Pixel::Format pixelFormat )
-{
- DALI_ASSERT_DEBUG( numBytes.bufferSize > 0 && "Zero allocations are pointless if also harmless." );
- DALI_ASSERT_DEBUG( imageWidth > 0 && imageHeight > 0 && "Zero dimensioned images are pointless if also harmless." );
- return ImageDataPtr( new ImageData( numBytes, imageWidth, imageHeight, pixelFormat ) );
-}
-
-ImageDataPtr ImageData::New( uint8_t * const imageBuffer, const BufferSize numBytes, unsigned imageWidth, unsigned imageHeight, Pixel::Format pixelFormat )
-{
- DALI_ASSERT_DEBUG( numBytes.bufferSize > 0 && "Zero-length buffers are pointless if also harmless." );
- DALI_ASSERT_DEBUG( imageWidth > 0 && imageHeight > 0 && "Zero dimensioned images are pointless if also harmless." );
- return ImageDataPtr( new ImageData( imageBuffer, numBytes, imageWidth, imageHeight, pixelFormat ) );
-}
-
-ImageDataPtr NewBitmapImageData( unsigned imageWidth, unsigned imageHeight, Pixel::Format pixelFormat )
-{
- DALI_ASSERT_DEBUG( pixelFormat <= Pixel::BGRA8888 && "Pixel format must be an addressable one." );
- const size_t numBytes = imageWidth * imageHeight * Pixel::GetBytesPerPixel( pixelFormat );
-
- return ImageData::New( BufferSize(numBytes), imageWidth, imageHeight, pixelFormat );
-}
-
-} //namespace Integration
-
-} //namespace Dali
-
+++ /dev/null
-#ifndef __DALI_INTEGRATION_IMAGE_DATA_H__
-#define __DALI_INTEGRATION_IMAGE_DATA_H__
-
-/*
- * Copyright (c) 2014 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.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// INTERNAL INCLUDES
-#include <dali/integration-api/debug.h> // For DALI_LOG_OBJECT_STRING_DECLARATION
-#include <dali/public-api/object/ref-object.h>
-#include <dali/public-api/common/intrusive-ptr.h>
-#include <dali/public-api/images/pixel.h>
-
-// EXTERNAL INCLUDES
-#include <stdint.h>
-
-namespace Dali
-{
-
-namespace Integration
-{
-
-class ImageData;
-typedef IntrusivePtr<ImageData> ImageDataPtr;
-
-typedef uint8_t PixelBuffer;
-
-/**
- * Used to avoid accidentally mixing the order of parameters where some are uint
- * dimensions and one is a buffer size.
- **/
-class BufferSize
-{
-public:
- explicit BufferSize(size_t size) : bufferSize( size )
- { }
- operator size_t() const { return bufferSize; }
- const size_t bufferSize;
-};
-
-/**
- * @brief A simple container for image data.
- *
- * Just a pointer to a buffer and some minimal metadata. It always owns the
- * buffer of image data that it points to until it is destroyed or the buffer
- * is released with ReleaseImageBuffer().
- *
- * The width and height stored are the logical image values. Compressed formats
- * such as ETC group pixels into blocks (ETC = 4*4) and these logical width and
- * height may indicate, for example for ETC, that 1 to 3 pixels in the rightmost
- * column of blocks or bottom row are ignored for rendering.
- * For simple uncompressed images, the buffer is exactly width * height *
- * bytes-per-pixel in size with no spare bytes at right or bottom edge.
- */
-class DALI_IMPORT_API ImageData : public Dali::RefObject
-{
-public:
- /**
- * @brief Three values for the information about the alpha values in the
- * pixels.
- *
- * Alpha in pixels with the channel can be undetermined, it can be all-ones,
- * or it can have at least one pixel that is translucent with an alpha < 1.0.
- **/
- enum AlphaUsage
- {
- /** Alpha not yet been tested.*/
- ALPHA_USAGE_UNDETERMINED,
- /** Alpha == 1.0 in every pixel.*/
- ALPHA_USAGE_ALL_OPAQUE,
- /** Alpha < 1.0 in at least one pixel.*/
- ALPHA_USAGE_SOME_TRANSLUCENT
- };
-
-private:
-
- /**
- * Construct an instance and allocate a buffer owned by it.
- * @param[in] numBytes The number of bytes to allocate to hold the image data.
- * @param[in] imageWidth The width in pixels of the image.
- * @param[in] imageHeight The height in pixels of the image.
- * @param[in] pixelFormat The format of the image data in the buffer.
- */
- ImageData( const size_t numBytes, const unsigned imageWidth, const unsigned imageHeight, const Pixel::Format pixelFormat );
-
- /**
- * Construct an instance and have it take ownership of the buffer passed in.
- * @param[in] imageBuffer A buffer of pixel data that should have been allocated using <code>new uint8_t[]</code>.
- * @param[in] numBytes The number of bytes in the buffer pointed to by imageBuffer.
- * @param[in] imageWidth The width in pixels of the image.
- * @param[in] imageHeight The height in pixels of the image.
- * @param[in] pixelFormat The format of the image data in the buffer.
- */
- ImageData( uint8_t * const imageBuffer, const size_t numBytes, const unsigned imageWidth, const unsigned imageHeight, const Pixel::Format pixelFormat );
-
- ~ImageData();
-
-public:
-
- /** Allocate and initialize a fresh ImageData object pointing at a new buffer,
- * returning a smart pointer owning it.
- * @note Clients can alternatively use the helper function NewBitmapImageData() to
- * calculate the buffer size from other parameters if the image data represents
- * a bitmap (a 2d grid of addressable pixels).
- * @param[in] numBytes The number of bytes to allocate to hold the image data.
- * @param[in] imageWidth The width in pixels of the image.
- * @param[in] imageHeight The height in pixels of the image.
- * @param[in] pixelFormat The format of the image data in the buffer.
- **/
- static ImageDataPtr New( const BufferSize numBytes, unsigned imageWidth, unsigned imageHeight, Pixel::Format pixelFormat );
-
- /** Allocate and initialise a fresh ImageData object, taking ownership of the
- * buffer passed in.
- * @param[in] imageBuffer A block of memory allocated with
- * <code>new uint8_t[]</code>. <em>This is owned by the new ImageData instance
- * on successful return and should be forgotten by the caller</em>.
- * @param[in] numBytes The number of bytes in the buffer pointed to by imageBuffer.
- * @param[in] imageWidth The width in pixels of the image.
- * @param[in] imageHeight The height in pixels of the image.
- * @param[in] pixelFormat The format of the image data in the buffer.
- **/
- static ImageDataPtr New( uint8_t * const imageBuffer, const BufferSize numBytes, unsigned imageWidth, unsigned imageHeight, Pixel::Format pixelFormat );
-
- /** Access the buffer of image data. */
- const uint8_t * GetBuffer() const { return mData; }
-
- /** Access the buffer of image data. */
- uint8_t * GetBuffer() { return mData; }
-
- /**
- * Pass ownership of the buffer of pixel-level data that this instance
- * currently owns to the caller, and forget about the buffer here as a
- * side effect.
- * @returns A pointer to the underlying buffer of pixel-level image data.
- * The caller takes ownership of the buffer and is responsible for calling
- * delete[] on it eventually.
- **/
- uint8_t * ReleaseImageBuffer() { uint8_t * const data = mData; mData = 0; return data; }
-
- /**
- * @brief Get whether the alpha channel in the pixels is used.
- */
- AlphaUsage GetAlphaUsage() const { return mAlphaChannelUsed; }
-
- /**
- * @brief Set whether the alpha channel in the pixels is used.
- */
- void SetAlphaUsed( const bool alphaUsed ) { mAlphaChannelUsed = alphaUsed ? ALPHA_USAGE_SOME_TRANSLUCENT : ALPHA_USAGE_ALL_OPAQUE; }
-
-private:
-
- ImageData(const ImageData& other); ///< defined private to prevent use
- ImageData& operator = (const ImageData& other); ///< defined private to prevent use
-
- /** Pointer to the buffer of image data. */
- uint8_t* mData;
-
-public:
- const size_t dataSize; ///< Number of bytes in buffer pointed at by mData
- const uint16_t imageWidth; ///< Image logical width in pixels
- const uint16_t imageHeight; ///< Image logical height in pixels
- const Pixel::Format pixelFormat; ///< Pixel format
-
-private:
- AlphaUsage mAlphaChannelUsed;
-
- // Changes scope, should be at end of class
- DALI_LOG_OBJECT_STRING_DECLARATION;
-};
-
-/**
- * A convenience function for creating the common case of an uncompressed image
- * having width * height pixels in the buffer.
- * @param[in] imageWidth The width in pixels of the image.
- * @param[in] imageHeight The height in pixels of the image.
- * @param[in] pixelFormat The format of the image data in the buffer.
- */
-DALI_IMPORT_API ImageDataPtr NewBitmapImageData( unsigned imageWidth, unsigned imageHeight, Pixel::Format pixelFormat );
-
-} // namespace Integration
-
-} // namespace Dali
-
-#endif // __DALI_INTEGRATION_IMAGE_DATA_H__
projects / platform / core / uifw / dali-core.git / commitdiff