2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <dali/internal/event/images/encoded-buffer-image-impl.h>
22 #include <cstring> // for memcpy
25 #include <dali/public-api/object/type-registry.h>
26 #include <dali/devel-api/common/ref-counted-dali-vector.h>
27 #include <dali/internal/event/common/thread-local-storage.h>
28 #include <dali/integration-api/platform-abstraction.h>
38 TypeRegistration mType( typeid( Dali::EncodedBufferImage ), typeid( Dali::Image ), NULL );
40 /** Raw bytes of a resource laid out exactly as it would be in a file, but in memory. */
41 typedef Dali::RefCountedVector<uint8_t> RequestBuffer;
42 /** Counting smart pointer for managing a buffer of raw bytes. */
43 typedef IntrusivePtr<RequestBuffer> RequestBufferPtr;
45 } // unnamed namespace
47 EncodedBufferImagePtr EncodedBufferImage::New( const uint8_t * const encodedImage,
48 std::size_t encodedImageByteCount,
49 ImageDimensions size, FittingMode::Type fittingMode, SamplingMode::Type samplingMode,
50 bool orientationCorrection )
52 DALI_ASSERT_DEBUG( encodedImage && "Null image pointer passed-in for decoding from memory." );
53 DALI_ASSERT_DEBUG( encodedImageByteCount > 0U && "Zero size passed for image resource in memory buffer." );
54 DALI_ASSERT_ALWAYS( encodedImage && (encodedImageByteCount != 0) );
55 // SEGV early before we allocate anything if the caller passed in an invalid
56 // input buffer by reading both ends of it:
57 DALI_ASSERT_ALWAYS( static_cast<int>( encodedImage[0] + encodedImage[encodedImageByteCount-1] ) != -1 );
59 EncodedBufferImagePtr image( new EncodedBufferImage() );
60 image->Initialize(); // Second stage initialization
62 Dali::Integration::BitmapResourceType resourceType( size, fittingMode, samplingMode, orientationCorrection );
63 RequestBufferPtr buffer( new RequestBuffer );
64 buffer->GetVector().Resize( encodedImageByteCount );
65 // Resize() won't throw on failure, so avoid a SEGV if the allocation failed:
66 DALI_ASSERT_ALWAYS( buffer->GetVector().Size() >= encodedImageByteCount );
68 memcpy( &(buffer->GetVector()[0]), encodedImage, encodedImageByteCount );
70 // Get image size from buffer
71 Dali::Integration::PlatformAbstraction& platformAbstraction = Internal::ThreadLocalStorage::Get().GetPlatformAbstraction();
72 const ImageDimensions expectedSize = platformAbstraction.GetClosestImageSize( buffer, size, fittingMode, samplingMode, orientationCorrection );
73 image->mWidth = static_cast<unsigned int>( expectedSize.GetWidth() );
74 image->mHeight = static_cast<unsigned int>( expectedSize.GetHeight() );
76 // Load the image synchronously
77 Integration::BitmapPtr bitmap = platformAbstraction.DecodeBuffer( resourceType, &(buffer->GetVector()[0]), encodedImageByteCount );
81 unsigned width = bitmap->GetImageWidth();
82 unsigned height = bitmap->GetImageHeight();
85 Pixel::Format format = bitmap->GetPixelFormat();
86 image->mTexture = Texture::New( Dali::TextureType::TEXTURE_2D, format, width, height );
88 //Upload data to the texture
89 size_t bufferSize = bitmap->GetBufferSize();
90 PixelDataPtr pixelData = PixelData::New( bitmap->GetBufferOwnership(), bufferSize, width, height, format,
91 static_cast< Dali::PixelData::ReleaseFunction >( bitmap->GetReleaseFunction() ) );
92 image->mTexture->Upload( pixelData );
94 image->mWidth = size.GetWidth();
95 if( image->mWidth == 0 )
97 image->mWidth = width;
100 image->mHeight = size.GetHeight();
101 if( image->mHeight == 0 )
103 image->mHeight = height;
108 image->mTexture = Texture::New( Dali::TextureType::TEXTURE_2D, Pixel::RGBA8888, 0u, 0u );
109 image->mWidth = image->mHeight = 0u;
115 } // namespace Internal