stubs to enable passing ostream to png-writing functions

1 files changed, 10 insertions, 0 deletions

diff --git a/src/imageutils-lodepng.cc b/src/imageutils-lodepng.cc
index c89ed7c..a74f107 100644
--- a/src/imageutils-lodepng.cc
+++ b/src/imageutils-lodepng.cc
@@ -2,6 +2,16 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+bool write_png(std::ostream &output, unsigned char *pixels, int width, int height)
+{
+  size_t dataout_size = -1;
+  unsigned char *dataout = (unsigned char *)malloc(width*height*4);
+  LodePNG_encode(&dataout, &dataout_size, pixels, width, height, LCT_RGBA, 8);
+	output.write( dataout, dataout_size );;
+	free( dataout );
+  return true;
+}
+
 bool write_png(const char *filename, unsigned char *pixels, int width, int height)
 {
   //encoder.settings.zlibsettings.windowSize = 2048;