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40 lines
1.4 KiB
Diff
40 lines
1.4 KiB
Diff
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diff -r e29281594440 -r 9d9b5f3a97cd src/vigra_impex/png.cxx
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--- a/src/vigra_impex/png.cxx Mon Nov 09 11:10:35 2009 +0100
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+++ b/src/vigra_impex/png.cxx Mon Apr 12 14:52:44 2010 +0200
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@@ -65,10 +65,20 @@
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#include <png.h>
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}
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+#define STRINGIFY(m_argument) #m_argument
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+
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#if PNG_LIBPNG_VER < 10201
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#error "please update your libpng to at least 1.2.1"
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#endif
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+#if PNG_LIBPNG_VER >= 10400
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+#define PNG_SET_EXPAND_GRAY_1_2_4_TO_8_NAME png_set_expand_gray_1_2_4_to_8
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+#else
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+#define PNG_SET_EXPAND_GRAY_1_2_4_TO_8_NAME png_set_gray_1_2_4_to_8
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+#endif
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+#define PNG_SET_EXPAND_GRAY_1_2_4_TO_8_FUNCTION_NAME STRINGIFY(PNG_SET_EXPAND_GRAY_1_2_4_TO_8_NAME)
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+#define PNG_SET_EXPAND_GRAY_1_2_4_TO_8(m_image) PNG_SET_EXPAND_GRAY_1_2_4_TO_8_NAME(m_image)
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+
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// TODO: per-scanline reading/writing
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namespace {
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@@ -274,8 +284,8 @@
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// expand gray values to at least one byte size
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if ( color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8 ) {
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if (setjmp(png->jmpbuf))
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- vigra_postcondition( false,png_error_message.insert(0, "error in png_set_gray_1_2_4_to_8(): ").c_str());
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- png_set_gray_1_2_4_to_8(png);
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+ vigra_postcondition( false, png_error_message.insert(0, "error in " PNG_SET_EXPAND_GRAY_1_2_4_TO_8_FUNCTION_NAME " (): ").c_str());
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+ PNG_SET_EXPAND_GRAY_1_2_4_TO_8(png);
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bit_depth = 8;
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}
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