[4.0] Exposing Exif Image metadata

[platform/core/uifw/dali-adaptor.git] / platform-abstractions / tizen / image-loaders / loader-png.cpp

diff --git a/platform-abstractions/tizen/image-loaders/loader-png.cpp b/platform-abstractions/tizen/image-loaders/loader-png.cpp
index 89bca77..872e8ee 100755 (executable)
--- a/platform-abstractions/tizen/image-loaders/loader-png.cpp
+++ b/platform-abstractions/tizen/image-loaders/loader-png.cpp
@@ -18,24 +18,17 @@
 #include "loader-png.h"
 
 #include <cstring>
-#include <cstdlib>
 
 #include <zlib.h>
 #include <png.h>
 
-#include <dali/integration-api/bitmap.h>
 #include <dali/integration-api/debug.h>
 #include <dali/public-api/images/image.h>
-#include "dali/public-api/math/math-utils.h"
-#include "dali/public-api/math/vector2.h"
 #include "platform-capabilities.h"
+#include <adaptors/devel-api/adaptor-framework/pixel-buffer.h>
 
 namespace Dali
 {
-
-using Integration::Bitmap;
-using Dali::Integration::PixelBuffer;
-
 namespace TizenPlatform
 {
 
@@ -128,7 +121,7 @@ bool LoadPngHeader( const ImageLoader::Input& input, unsigned int& width, unsign
   return success;
 }
 
-bool LoadBitmapFromPng( const ImageLoader::Input& input, Integration::Bitmap& bitmap )
+bool LoadBitmapFromPng( const ImageLoader::Input& input, Dali::Devel::PixelBuffer& bitmap )
 {
   png_structp png = NULL;
   png_infop info = NULL;
@@ -137,7 +130,6 @@ bool LoadBitmapFromPng( const ImageLoader::Input& input, Integration::Bitmap& bi
   /// @todo: consider parameters
   unsigned int y;
   unsigned int width, height;
-  unsigned char *pixels;
   png_bytep *rows;
   unsigned int bpp = 0; // bytes per pixel
   bool valid = false;
@@ -162,37 +154,33 @@ bool LoadBitmapFromPng( const ImageLoader::Input& input, Integration::Bitmap& bi
 
   png_byte colortype = png_get_color_type(png, info);
 
-  if(colortype == PNG_COLOR_TYPE_GRAY)
+  if( colortype == PNG_COLOR_TYPE_GRAY ||
+      colortype == PNG_COLOR_TYPE_GRAY_ALPHA )
   {
-    switch( colordepth )
+    if( colortype == PNG_COLOR_TYPE_GRAY )
     {
-      case 8:
+      pixelFormat = Pixel::L8;
+      if( png_get_valid(png, info, PNG_INFO_tRNS) )
       {
-        pixelFormat = Pixel::L8;
-        valid = true;
-        break;
-      }
-      default:
-      {
-        break;
+        colortype = PNG_COLOR_TYPE_GRAY_ALPHA;
+        /* expand transparency entry -> alpha channel if present */
+        png_set_tRNS_to_alpha(png);
+        pixelFormat = Pixel::LA88;
       }
     }
-  }
-  else if(colortype == PNG_COLOR_TYPE_GRAY_ALPHA)
-  {
-    switch(colordepth)
+    else
     {
-      case 8:
-      {
-        pixelFormat = Pixel::LA88;
-        valid = true;
-        break;
-      }
-      default:
-      {
-        break;
-      }
+      pixelFormat = Pixel::LA88;
+    }
+
+    if( colordepth < 8 )
+    {
+      /* expand gray (w/reduced bits) -> 8-bit RGB if necessary */
+      png_set_expand_gray_1_2_4_to_8(png);
+      /* pack all pixels to byte boundaries */
+      png_set_packing(png);
     }
+    valid = true;
   }
   else if(colortype == PNG_COLOR_TYPE_RGB )
   {
@@ -316,7 +304,7 @@ bool LoadBitmapFromPng( const ImageLoader::Input& input, Integration::Bitmap& bi
   }
 
   // decode the whole image into bitmap buffer
-  pixels = bitmap.GetPackedPixelsProfile()->ReserveBuffer(pixelFormat, width, height, bufferWidth, bufferHeight);
+  auto pixels = (bitmap = Dali::Devel::PixelBuffer::New(bufferWidth, bufferHeight, pixelFormat)).GetBuffer();
 
   DALI_ASSERT_DEBUG(pixels);
   rows = reinterpret_cast< png_bytep* >( malloc(sizeof(png_bytep) * height) );