+ // Call libpng to get a struct to read image info into
+ read_info = png_create_info_struct(read_ptr);
+ if (!read_info) {
+ fclose(fp);
+ png_destroy_read_struct(&read_ptr, &read_info,NULL);
+ return error;
+ }
+
+ // Set a jump point for libpng to long jump back to on error
+ if (setjmp(png_jmpbuf(read_ptr))) {
+ fclose(fp);
+ png_destroy_read_struct(&read_ptr, &read_info,NULL);
+ return error;
+ }
+
+ // Set up libpng to read from our file.
+ png_init_io(read_ptr,fp);
+
+ // Actually read data from the file
+ read_png(source.string(), read_ptr, read_info, &imageInfo);
+
+ // We're done reading so we can clean up
+ // Find old file size before releasing handle
+ fseek(fp, 0, SEEK_END);
+ size_t oldSize = (size_t)ftell(fp);
+ fclose(fp);
+ png_destroy_read_struct(&read_ptr, &read_info,NULL);
+
+ // Check to see if we're dealing with a 9-patch
+ // If we are, process appropriately
+ if (source.getBasePath().getPathExtension() == ".9") {
+ if (do_9patch(source.string(), &imageInfo) != NO_ERROR) {
+ return error;
+ }
+ }
+
+ // Call libpng to create a structure to hold the processed image data
+ // that can be written to disk
+ write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (!write_ptr) {
+ png_destroy_write_struct(&write_ptr, &write_info);
+ return error;
+ }
+
+ // Call libpng to create a structure to hold processed image info that can
+ // be written to disk
+ write_info = png_create_info_struct(write_ptr);
+ if (!write_info) {
+ png_destroy_write_struct(&write_ptr, &write_info);
+ return error;
+ }
+
+ // Open up our destination file for writing
+ fp = fopen(dest.string(), "wb");
+ if (!fp) {
+ fprintf(stderr, "%s ERROR: Unable to open PNG file\n", dest.string());
+ png_destroy_write_struct(&write_ptr, &write_info);
+ return error;
+ }
+
+ // Set up libpng to write to our file
+ png_init_io(write_ptr, fp);
+
+ // Set up a jump for libpng to long jump back on on errors
+ if (setjmp(png_jmpbuf(write_ptr))) {
+ fclose(fp);
+ png_destroy_write_struct(&write_ptr, &write_info);
+ return error;
+ }
+
+ // Actually write out to the new png
+ write_png(dest.string(), write_ptr, write_info, imageInfo,
+ bundle->getGrayscaleTolerance());
+
+ if (bundle->getVerbose()) {
+ // Find the size of our new file
+ FILE* reader = fopen(dest.string(), "rb");
+ fseek(reader, 0, SEEK_END);
+ size_t newSize = (size_t)ftell(reader);
+ fclose(reader);
+
+ float factor = ((float)newSize)/oldSize;
+ int percent = (int)(factor*100);
+ printf(" (processed image to cache entry %s: %d%% size of source)\n",
+ dest.string(), percent);
+ }
+
+ //Clean up
+ fclose(fp);
+ png_destroy_write_struct(&write_ptr, &write_info);
+
+ return NO_ERROR;
+}
projects / android / aapt.git / blobdiff