From: adam.b <adam.b@samsung.com>
Date: Fri, 5 Jan 2018 11:43:21 +0000 (+0000)
Subject: Fixed loading of compressed texture formats
X-Git-Tag: dali_1.3.7~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=56487a2c05fd81e2a630bd3c71418e74bf357e33;p=platform%2Fcore%2Fuifw%2Fdali-adaptor.git

Fixed loading of compressed texture formats

- ASTC loader fixed
- KTX loader fixed
- PixelBuffer implementation allows to allocate fixed size
  memory buffer independent on the texture format

Change-Id: I97dbd4e4b9910832a86c1b0b6229808e5ae4a64f
---

diff --git a/adaptors/common/pixel-buffer-impl.cpp b/adaptors/common/pixel-buffer-impl.cpp
index 23af6bc..b5b5ca4 100644
--- a/adaptors/common/pixel-buffer-impl.cpp
+++ b/adaptors/common/pixel-buffer-impl.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2018 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.
@@ -204,6 +204,13 @@ void PixelBuffer::ReleaseBuffer()
   }
 }
 
+void PixelBuffer::AllocateFixedSize( uint32_t size )
+{
+  ReleaseBuffer();
+  mBuffer = reinterpret_cast<unsigned char*>(malloc( size ));
+  mBufferSize = size;
+}
+
 void PixelBuffer::ScaleAndCrop( float scaleFactor, ImageDimensions cropDimensions )
 {
   ImageDimensions outDimensions( float(mWidth) * scaleFactor,
@@ -352,7 +359,9 @@ void PixelBuffer::MultiplyColorByAlpha()
 {
   auto bytesPerPixel = Pixel::GetBytesPerPixel( mPixelFormat );
 
-  if( Pixel::HasAlpha(mPixelFormat) )
+  // Compressed textures have unknown size of the pixel. Alpha premultiplication
+  // must be skipped in such case
+  if( Pixel::GetBytesPerPixel(mPixelFormat) && Pixel::HasAlpha(mPixelFormat) )
   {
     unsigned char* pixel = mBuffer;
     const unsigned int bufferSize = mWidth * mHeight;
diff --git a/adaptors/common/pixel-buffer-impl.h b/adaptors/common/pixel-buffer-impl.h
index ae899be..35cb5a4 100644
--- a/adaptors/common/pixel-buffer-impl.h
+++ b/adaptors/common/pixel-buffer-impl.h
@@ -2,7 +2,7 @@
 #define DALI_INTERNAL_ADAPTOR_PIXEL_BUFFER_H
 
 /*
- * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2018 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.
@@ -206,6 +206,12 @@ public:
    */
   void SetMetadata(std::unique_ptr<Property::Map> metadata);
 
+  /**
+   * Allocates fixed amount of memory for the pixel data. Used by compressed formats.
+   * @param[in] size Size of memory to be allocated
+   */
+  void AllocateFixedSize( uint32_t size );
+
 private:
   /*
    * Undefined copy constructor.
diff --git a/platform-abstractions/tizen/image-loaders/loader-astc.cpp b/platform-abstractions/tizen/image-loaders/loader-astc.cpp
index a0362aa..10460e4 100755
--- a/platform-abstractions/tizen/image-loaders/loader-astc.cpp
+++ b/platform-abstractions/tizen/image-loaders/loader-astc.cpp
@@ -24,6 +24,7 @@
 #include <dali/integration-api/debug.h>
 #include <dali/public-api/images/pixel.h>
 #include <adaptors/devel-api/adaptor-framework/pixel-buffer.h>
+#include <adaptors/common/pixel-buffer-impl.h>
 
 namespace Dali
 {
@@ -226,7 +227,16 @@ bool LoadBitmapFromAstc( const ImageLoader::Input& input, Dali::Devel::PixelBuff
 
   // allocate pixel data
   bitmap = Dali::Devel::PixelBuffer::New(width, height, pixelFormat);
+
+  // Compressed format won't allocate the buffer
   auto pixels = bitmap.GetBuffer();
+  if( !pixels )
+  {
+    // allocate buffer manually
+    auto& impl = GetImplementation( bitmap );
+    impl.AllocateFixedSize( imageByteCount );
+    pixels = bitmap.GetBuffer();
+  }
 
   // Load the image data.
   const size_t bytesRead = fread( pixels, 1, imageByteCount, filePointer );
diff --git a/platform-abstractions/tizen/image-loaders/loader-ktx.cpp b/platform-abstractions/tizen/image-loaders/loader-ktx.cpp
index fc67104..e8e9e13 100755
--- a/platform-abstractions/tizen/image-loaders/loader-ktx.cpp
+++ b/platform-abstractions/tizen/image-loaders/loader-ktx.cpp
@@ -23,6 +23,7 @@
 #include <dali/public-api/common/compile-time-assert.h>
 #include <dali/integration-api/debug.h>
 #include <adaptors/devel-api/adaptor-framework/pixel-buffer.h>
+#include <adaptors/common/pixel-buffer-impl.h>
 
 namespace Dali
 {
@@ -587,13 +588,23 @@ bool LoadBitmapFromKtx( const ImageLoader::Input& input, Dali::Devel::PixelBuffe
 
   // Load up the image bytes:
   bitmap = Dali::Devel::PixelBuffer::New(width, height, pixelFormat);
+
+  // Compressed format won't allocate the buffer
   auto pixels = bitmap.GetBuffer();
+  if( !pixels )
+  {
+    // allocate buffer manually
+    auto &impl = GetImplementation(bitmap);
+    impl.AllocateFixedSize(imageByteCount);
+    pixels = bitmap.GetBuffer();
+  }
 
   if(!pixels)
   {
     DALI_LOG_ERROR( "Unable to reserve a pixel buffer to load the requested bitmap into.\n" );
     return false;
   }
+
   const size_t bytesRead = fread(pixels, 1, imageByteCount, fp);
   if(bytesRead != imageByteCount)
   {