added a load from data buffer w*h*4 unsigned char

victusfate · May 30, 2012 · 817a750 · 817a750
1 parent 1da0a5b
commit 817a750
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diff --git a/src/Image.cc b/src/Image.cc
@@ -231,6 +231,19 @@ Image::loadFromBuffer(uint8_t *buf, unsigned len) {
   return CAIRO_STATUS_READ_ERROR;
 }
 
+/*
+ * load from data buffer width*height*4 bytes
+ */
+cairo_status_t
+Image::loadFromDataBuffer(unsigned char *buf, int width, int height) {
+  clearData();
+  int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, width); // 4*width + ?
+  _surface = cairo_image_surface_create_for_data(buf,CAIRO_FORMAT_ARGB32,width,height,stride);
+  loaded();
+  return cairo_surface_status(_surface);
+}
+
+
 /*
  * Load PNG data from `buf`.
  */

diff --git a/src/Image.h b/src/Image.h
@@ -45,6 +45,7 @@ class Image: public node::ObjectWrap {
     inline int isComplete(){ return COMPLETE == state; }
     cairo_status_t loadSurface();
     cairo_status_t loadFromBuffer(uint8_t *buf, unsigned len);
+    cairo_status_t loadFromDataBuffer(unsigned char *buf, int width, int height);
     cairo_status_t loadPNGFromBuffer(uint8_t *buf);
     cairo_status_t loadPNG();
     void clearData();