1 files changed, 57 insertions, 0 deletions
diff --git a/net-libs/webkit-gtk/files/webkit-gtk-1.4.1-libpng15.patch b/net-libs/webkit-gtk/files/webkit-gtk-1.4.1-libpng15.patch
new file mode 100644
index 000000000000..75a0d84c5e29
--- /dev/null
+++ b/net-libs/webkit-gtk/files/webkit-gtk-1.4.1-libpng15.patch
@@ -0,0 +1,57 @@
+diff --git a/Source/WebCore/platform/image-decoders/png/PNGImageDecoder.cpp b/Source/WebCore/platform/image-decoders/png/PNGImageDecoder.cpp
+index 8edfe36..44cb98c 100644
+--- a/Source/WebCore/platform/image-decoders/png/PNGImageDecoder.cpp
++++ b/Source/WebCore/platform/image-decoders/png/PNGImageDecoder.cpp
+@@ -226,7 +226,11 @@ static ColorProfile readColorProfile(png_structp png, png_infop info)
+ #ifdef PNG_iCCP_SUPPORTED
+     char* profileName;
+     int compressionType;
+-    char* profile;
++#if (PNG_LIBPNG_VER < 10500)
++    png_charp profile;
++#else
++    png_bytep profile;
++#endif
+     png_uint_32 profileLength;
+     if (png_get_iCCP(png, info, &profileName, &compressionType, &profile, &profileLength)) {
+         ColorProfile colorProfile;
+@@ -241,11 +245,11 @@ void PNGImageDecoder::headerAvailable()
+ {
+     png_structp png = m_reader->pngPtr();
+     png_infop info = m_reader->infoPtr();
+-    png_uint_32 width = png->width;
+-    png_uint_32 height = png->height;
++    png_uint_32 width = png_get_image_width(png, info);
++    png_uint_32 height = png_get_image_height(png, info);
+     
+     // Protect against large images.
+-    if (png->width > cMaxPNGSize || png->height > cMaxPNGSize) {
++    if (width > cMaxPNGSize || height > cMaxPNGSize) {
+         longjmp(JMPBUF(png), 1);
+         return;
+     }
+@@ -318,9 +322,14 @@ void PNGImageDecoder::headerAvailable()
+     m_reader->setHasAlpha(channels == 4);
+ 
+     if (m_reader->decodingSizeOnly()) {
+-        // If we only needed the size, halt the reader.     
++        // If we only needed the size, halt the reader.
++#if defined(PNG_LIBPNG_VER_MAJOR) && defined(PNG_LIBPNG_VER_MINOR) && (PNG_LIBPNG_VER_MAJOR > 1 || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 5))
++        // '0' argument to png_process_data_pause means: Do not cache unprocessed data.
++        m_reader->setReadOffset(m_reader->currentBufferSize() - png_process_data_pause(png, 0));
++#else
+         m_reader->setReadOffset(m_reader->currentBufferSize() - png->buffer_size);
+         png->buffer_size = 0;
++#endif
+     }
+ }
+ 
+@@ -343,7 +352,7 @@ void PNGImageDecoder::rowAvailable(unsigned char* rowBuffer, unsigned rowIndex,
+         // For PNGs, the frame always fills the entire image.
+         buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
+ 
+-        if (m_reader->pngPtr()->interlaced)
++        if (png_get_interlace_type(m_reader->pngPtr(), m_reader->infoPtr()) != PNG_INTERLACE_NONE)
+             m_reader->createInterlaceBuffer((m_reader->hasAlpha() ? 4 : 3) * size().width() * size().height());
+     }
+