--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file trgt_png.cpp
+** \brief png_trgt Target Module
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 Chris Moore
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+**
+** === N O T E S ===========================================================
+**
+** ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#define SYNFIG_TARGET
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "trgt_png.h"
+#include <png.h>
+#include <ETL/stringf>
+#include <cstdio>
+#include <algorithm>
+#include <functional>
+#include <ETL/misc>
+
+#endif
+
+/* === M A C R O S ========================================================= */
+
+using namespace synfig;
+using namespace std;
+using namespace etl;
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_TARGET_INIT(png_trgt);
+SYNFIG_TARGET_SET_NAME(png_trgt,"png");
+SYNFIG_TARGET_SET_EXT(png_trgt,"png");
+SYNFIG_TARGET_SET_VERSION(png_trgt,"0.1");
+SYNFIG_TARGET_SET_CVS_ID(png_trgt,"$Id$");
+
+/* === M E T H O D S ======================================================= */
+
+void
+png_trgt::png_out_error(png_struct *png_data,const char *msg)
+{
+ png_trgt *me=(png_trgt*)png_data->error_ptr;
+ synfig::error(strprintf("png_trgt: error: %s",msg));
+ me->ready=false;
+}
+
+void
+png_trgt::png_out_warning(png_struct *png_data,const char *msg)
+{
+ png_trgt *me=(png_trgt*)png_data->error_ptr;
+ synfig::warning(strprintf("png_trgt: warning: %s",msg));
+ me->ready=false;
+}
+
+
+//Target *png_trgt::New(const char *filename){ return new png_trgt(filename);}
+
+png_trgt::png_trgt(const char *Filename)
+{
+ file=NULL;
+ filename=Filename;
+ buffer=NULL;
+ ready=false;
+ color_buffer=0;
+}
+
+png_trgt::~png_trgt()
+{
+ if(file)
+ fclose(file);
+ file=NULL;
+ delete [] buffer;
+ delete [] color_buffer;
+}
+
+bool
+png_trgt::set_rend_desc(RendDesc *given_desc)
+{
+ //given_desc->set_pixel_format(PixelFormat((int)PF_RGB|(int)PF_A));
+ desc=*given_desc;
+ imagecount=desc.get_frame_start();
+ if(desc.get_frame_end()-desc.get_frame_start()>0)
+ multi_image=true;
+ else
+ multi_image=false;
+ return true;
+}
+
+void
+png_trgt::end_frame()
+{
+ if(ready && file)
+ {
+ png_write_end(png_ptr,info_ptr);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ }
+
+ if(file && file!=stdout)
+ fclose(file);
+ file=NULL;
+ imagecount++;
+ ready=false;
+}
+
+bool
+png_trgt::start_frame(synfig::ProgressCallback *callback)
+{
+ int w=desc.get_w(),h=desc.get_h();
+
+ if(file && file!=stdout)
+ fclose(file);
+ if(filename=="-")
+ {
+ if(callback)callback->task(strprintf("(stdout) %d",imagecount).c_str());
+ file=stdout;
+ }
+ else if(multi_image)
+ {
+ String newfilename(filename_sans_extension(filename) +
+ etl::strprintf(".%04d",imagecount) +
+ filename_extension(filename));
+ file=fopen(newfilename.c_str(),POPEN_BINARY_WRITE_TYPE);
+ if(callback)callback->task(newfilename);
+ }
+ else
+ {
+ file=fopen(filename.c_str(),POPEN_BINARY_WRITE_TYPE);
+ if(callback)callback->task(filename);
+ }
+
+ if(!file)
+ return false;
+
+ delete [] buffer;
+ buffer=new unsigned char[4*w];
+
+ delete [] color_buffer;
+ color_buffer=new Color[w];
+
+ png_ptr=png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)this,png_out_error, png_out_warning);
+ if (!png_ptr)
+ {
+ synfig::error("Unable to setup PNG struct");
+ fclose(file);
+ return false;
+ }
+
+ info_ptr= png_create_info_struct(png_ptr);
+ if (!info_ptr)
+ {
+ synfig::error("Unable to setup PNG info struct");
+ fclose(file);
+ png_destroy_write_struct(&png_ptr,(png_infopp)NULL);
+ return false;
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr)))
+ {
+ synfig::error("Unable to setup longjump");
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ fclose(file);
+ return false;
+ }
+ png_init_io(png_ptr,file);
+ png_set_filter(png_ptr,0,PNG_FILTER_NONE);
+
+ setjmp(png_jmpbuf(png_ptr));
+ png_set_IHDR(png_ptr,info_ptr,w,h,8,PNG_COLOR_TYPE_RGBA,PNG_INTERLACE_NONE,PNG_COMPRESSION_TYPE_DEFAULT,PNG_FILTER_TYPE_DEFAULT);
+
+ // Write the gamma
+ //png_set_gAMA(png_ptr, info_ptr,1.0/gamma().get_gamma());
+ png_set_gAMA(png_ptr, info_ptr,gamma().get_gamma());
+
+ // Write the physical size
+ png_set_pHYs(png_ptr,info_ptr,round_to_int(desc.get_x_res()),round_to_int(desc.get_y_res()),PNG_RESOLUTION_METER);
+
+ char title [] = "Title";
+ char description[] = "Description";
+ char software [] = "Software";
+ char synfig [] = "SYNFIG";
+// char copyright [] = "Copyright";
+// char voria [] = "(c) 2004 Voria Studios, LLC";
+
+ // Output any text info along with the file
+ png_text comments[]=
+ {
+ { PNG_TEXT_COMPRESSION_NONE, title, const_cast<char *>(get_canvas()->get_name().c_str()),
+ strlen(get_canvas()->get_name().c_str()) },
+ { PNG_TEXT_COMPRESSION_NONE, description, const_cast<char *>(get_canvas()->get_description().c_str()),
+ strlen(get_canvas()->get_description().c_str()) },
+// { PNG_TEXT_COMPRESSION_NONE, copyright, voria, strlen(voria) },
+ { PNG_TEXT_COMPRESSION_NONE, software, synfig, strlen(synfig) },
+ };
+ png_set_text(png_ptr,info_ptr,comments,sizeof(comments)/sizeof(png_text));
+
+ png_write_info_before_PLTE(png_ptr, info_ptr);
+ png_write_info(png_ptr, info_ptr);
+ ready=true;
+ return true;
+}
+
+Color *
+png_trgt::start_scanline(int /*scanline*/)
+{
+ return color_buffer;
+}
+
+bool
+png_trgt::end_scanline()
+{
+ if(!file || !ready)
+ return false;
+
+ convert_color_format(buffer, color_buffer, desc.get_w(), PF_RGB|PF_A, gamma());
+
+ setjmp(png_jmpbuf(png_ptr));
+ png_write_row(png_ptr,buffer);
+
+ return true;
+}
projects / synfig.git / blobdiff