svg plugin upgrades, filepng improvements

[goodguy/history.git] / cinelerra-5.1 / cinelerra / filepng.C

diff --git a/cinelerra-5.1/cinelerra/filepng.C b/cinelerra-5.1/cinelerra/filepng.C
index 6ccbf28819f51343957018d075574d54f45cbbbb..889ee240b38a561170d6fcac566ebf30ba632e78 100644 (file)
--- a/cinelerra-5.1/cinelerra/filepng.C
+++ b/cinelerra-5.1/cinelerra/filepng.C
@@ -254,27 +254,27 @@ int FilePNG::write_frame(VFrame *frame, VFrame *data, FrameWriterUnit *unit)
 
 //printf("FilePNG::write_frame 1\n");
        png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
-       if( png_ptr && !setjmp(png_jmpbuf(png_ptr)) ) {
-               info_ptr = png_create_info_struct(png_ptr);
-               png_set_write_fn(png_ptr, data,
-                       (png_rw_ptr)write_function, (png_flush_ptr)flush_function);
-               png_set_compression_level(png_ptr, 5);
-
-               png_set_IHDR(png_ptr, info_ptr, asset->width, asset->height, 8,
-                       asset->png_use_alpha ?  PNG_COLOR_TYPE_RGB_ALPHA : PNG_COLOR_TYPE_RGB,
-                       PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
-               png_write_info(png_ptr, info_ptr);
-               png_write_image(png_ptr, output_frame->get_rows());
-               png_write_end(png_ptr, info_ptr);
+       if( png_ptr ) {
+               if( !setjmp(png_jmpbuf(png_ptr)) ) {
+                       info_ptr = png_create_info_struct(png_ptr);
+                       png_set_write_fn(png_ptr, data,
+                               (png_rw_ptr)write_function, (png_flush_ptr)flush_function);
+                       png_set_compression_level(png_ptr, 5);
+
+                       png_set_IHDR(png_ptr, info_ptr, asset->width, asset->height, 8,
+                               asset->png_use_alpha ?  PNG_COLOR_TYPE_RGB_ALPHA : PNG_COLOR_TYPE_RGB,
+                               PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+                       png_write_info(png_ptr, info_ptr);
+                       png_write_image(png_ptr, output_frame->get_rows());
+                       png_write_end(png_ptr, info_ptr);
+                       result = 0;
+               }
                png_destroy_write_struct(&png_ptr, &info_ptr);
-               result = 0;
        }
-       else {
+       if( result ) {
                char error[256];  png_error(png_ptr, error);
                fprintf(stderr, "FilePNG::write_frame failed: %s\n", error);
        }
-
-       png_destroy_write_struct(&png_ptr, &info_ptr);
 //printf("FilePNG::write_frame 3 %d\n", data->get_compressed_size());
        return result;
 }