--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file trgt_mng.cpp
+** \brief MNG Target Module
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2007 Paul Wise
+** 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 ===========================================================
+**
+** You will need to read the PNG and MNG specs to understand this code
+**
+** ========================================================================= */
+
+/* === 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_mng.h"
+#include <libmng.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(mng_trgt);
+SYNFIG_TARGET_SET_NAME(mng_trgt,"mng");
+SYNFIG_TARGET_SET_EXT(mng_trgt,"mng");
+SYNFIG_TARGET_SET_VERSION(mng_trgt,"0.1");
+SYNFIG_TARGET_SET_CVS_ID(mng_trgt,"$Id$");
+
+/* === M E T H O D S ======================================================= */
+
+static mng_ptr MNG_DECL
+mng_alloc_proc(mng_size_t size)
+{
+ return (mng_ptr)calloc(1,size);
+}
+
+static void MNG_DECL
+mng_free_proc(mng_ptr ptr, mng_size_t size __attribute__ ((unused)))
+{
+ free(ptr); return;
+}
+
+static mng_bool MNG_DECL
+mng_null_proc(mng_handle mng __attribute__ ((unused)))
+{
+ // synfig::info("%s:%d mng_trgt::mng_null_proc was called", __FILE__, __LINE__);
+ return MNG_TRUE;
+}
+
+static mng_bool MNG_DECL
+mng_write_proc(mng_handle mng, mng_ptr buf, mng_uint32 size, mng_uint32* written)
+{
+ FILE* file = (FILE*)mng_get_userdata (mng);
+ *written = fwrite(buf, 1, size, file);
+ return MNG_TRUE;
+}
+
+static mng_bool MNG_DECL
+mng_error_proc(mng_handle mng __attribute__ ((unused)), mng_int32 error __attribute__ ((unused)),
+ mng_int8 severity __attribute__ ((unused)), mng_chunkid chunkname __attribute__ ((unused)),
+ mng_uint32 chunkseq __attribute__ ((unused)), mng_int32 extra1 __attribute__ ((unused)),
+ mng_int32 extra2 __attribute__ ((unused)), mng_pchar errortext)
+{
+ synfig::error("%s:%d mng_trgt: error: %s", __FILE__, __LINE__, errortext);
+ return MNG_TRUE;
+}
+
+mng_trgt::mng_trgt(const char *Filename) : filename(Filename)
+{
+ file=NULL;
+ buffer=NULL;
+ color_buffer=NULL;
+ zbuffer=NULL;
+ zbuffer_len=0;
+ ready=false;
+}
+
+mng_trgt::~mng_trgt()
+{
+ synfig::info("mng_trgt: ~mng_trgt");
+ if (mng != MNG_NULL)
+ {
+ mng_putchunk_mend(mng);
+ if (mng_write(mng) != 0)
+ {
+ mng_int8 severity;
+ mng_chunkid chunkname;
+ mng_uint32 chunkseq;
+ mng_int32 extra1;
+ mng_int32 extra2;
+ mng_pchar errortext;
+ mng_getlasterror(mng, &severity, &chunkname, &chunkseq, &extra1,&extra2, &errortext);
+ synfig::error("mng_trgt: error: couldn't write mng: %s",errortext);
+ }
+ mng_cleanup (&mng);
+ }
+ if (file != NULL) fclose(file); file=NULL;
+ if (buffer != NULL) { delete [] buffer; buffer = NULL; }
+ if (color_buffer != NULL) { delete [] color_buffer; color_buffer = NULL; }
+ if (zbuffer != NULL) { free(zbuffer); zbuffer = NULL; zbuffer_len = 0; }
+}
+
+bool
+mng_trgt::set_rend_desc(RendDesc *given_desc)
+{
+ 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;
+}
+
+
+bool
+mng_trgt::init()
+{
+ // synfig::info("%s:%d mng_trgt::init()", __FILE__, __LINE__);
+
+ int frame_rate, num_frames, play_time;
+ int num_layers = 1;
+
+ if (multi_image)
+ {
+ frame_rate = int(desc.get_frame_rate());
+ printf("frame rt %d\n", frame_rate);
+ num_frames = desc.get_frame_end()-desc.get_frame_start();
+ play_time = num_frames;// / frame_rate;
+ }
+ else
+ {
+ frame_rate = 0;
+ num_frames = 1;
+ play_time = 0;
+ }
+
+ time_t t = time (NULL);
+ struct tm* gmt = gmtime(&t);
+ w=desc.get_w(); h=desc.get_h();
+ file = fopen(filename.c_str(), POPEN_BINARY_WRITE_TYPE);
+ if (file == NULL) goto cleanup_on_error;
+ mng = mng_initialize((mng_ptr)file, mng_alloc_proc, mng_free_proc, MNG_NULL);
+ if (mng == MNG_NULL) goto cleanup_on_error;
+ if (mng_setcb_errorproc(mng, mng_error_proc) != 0) goto cleanup_on_error;
+ if (mng_setcb_writedata(mng, mng_write_proc) != 0) goto cleanup_on_error;
+ if (mng_setcb_openstream(mng, mng_null_proc) != 0) goto cleanup_on_error;
+ if (mng_setcb_closestream(mng, mng_null_proc) != 0) goto cleanup_on_error;
+ if (mng_create(mng) != 0) goto cleanup_on_error;
+ if (mng_putchunk_mhdr(mng, w, h, frame_rate, num_layers, num_frames, play_time, MNG_SIMPLICITY_VALID|MNG_SIMPLICITY_SIMPLEFEATURES) != 0) goto cleanup_on_error;
+ if (mng_putchunk_term(mng, MNG_TERMACTION_REPEAT, MNG_ITERACTION_LASTFRAME, 0, 0x7fffffff) != 0) goto cleanup_on_error;
+ {
+ char title[] = MNG_TEXT_TITLE;
+ if (mng_putchunk_text(mng, sizeof(title), title,
+ get_canvas()->get_name().length(), const_cast<char *>(get_canvas()->get_name().c_str())) != 0)
+ goto cleanup_on_error;
+
+ char description[] = MNG_TEXT_DESCRIPTION;
+ if (mng_putchunk_text(mng, sizeof(description), description,
+ get_canvas()->get_description().length(), const_cast<char *>(get_canvas()->get_description().c_str())) != 0)
+ goto cleanup_on_error;
+
+ char software[] = MNG_TEXT_SOFTWARE; char synfig[] = "SYNFIG";
+ if (mng_putchunk_text(mng, sizeof(software), software,
+ sizeof(synfig), synfig) != 0)
+ goto cleanup_on_error;
+ }
+ if (mng_putchunk_gama(mng, MNG_FALSE, (int)(gamma().get_gamma()*100000)) != 0) goto cleanup_on_error;
+ if (mng_putchunk_phys(mng, MNG_FALSE, round_to_int(desc.get_x_res()),round_to_int(desc.get_y_res()), MNG_UNIT_METER) != 0) goto cleanup_on_error;
+ if (mng_putchunk_time(mng, gmt->tm_year + 1900, gmt->tm_mon + 1, gmt->tm_mday, gmt->tm_hour, gmt->tm_min, gmt->tm_sec) != 0) goto cleanup_on_error;
+ buffer=new unsigned char[(4*w)+1];
+ if (buffer == NULL) goto cleanup_on_error;
+ color_buffer=new Color[w];
+ if (color_buffer == NULL) goto cleanup_on_error;
+ return true;
+
+cleanup_on_error:
+ ready=false;
+ if (mng != MNG_NULL)
+ {
+ mng_int8 severity;
+ mng_chunkid chunkname;
+ mng_uint32 chunkseq;
+ mng_int32 extra1;
+ mng_int32 extra2;
+ mng_pchar errortext;
+ mng_getlasterror (mng, &severity, &chunkname, &chunkseq, &extra1,&extra2, &errortext);
+ synfig::error("mng_trgt: libmng: %s",errortext);
+ mng_cleanup (&mng);
+ }
+
+ if (file && file!=stdout)
+ fclose(file);
+ file=NULL;
+
+ if (buffer != NULL)
+ {
+ delete [] buffer;
+ buffer = NULL;
+ }
+
+ if (color_buffer != NULL)
+ {
+ delete [] color_buffer;
+ color_buffer = NULL;
+ }
+
+ return false;
+}
+
+void
+mng_trgt::end_frame()
+{
+ // synfig::info("%s:%d mng_trgt::end_frame()", __FILE__, __LINE__);
+
+ if (deflate(&zstream,Z_FINISH) != Z_STREAM_END)
+ {
+ synfig::error("%s:%d deflate()", __FILE__, __LINE__);
+ return;
+ }
+ if (deflateEnd(&zstream) != Z_OK)
+ {
+ synfig::error("%s:%d deflateEnd()", __FILE__, __LINE__);
+ return;
+ }
+ if (mng != MNG_NULL)
+ {
+ mng_putchunk_idat(mng, zstream.next_out-zbuffer, zbuffer);
+ mng_putchunk_iend(mng);
+ }
+ imagecount++;
+ ready=false;
+}
+
+bool
+mng_trgt::start_frame(synfig::ProgressCallback *callback __attribute__ ((unused)))
+{
+ // synfig::info("%s:%d mng_trgt::start_frame()", __FILE__, __LINE__);
+
+ if (mng == MNG_NULL)
+ {
+ synfig::error("%s:%d mng == MNG_NULL", __FILE__, __LINE__);
+ return false;
+ }
+
+ if (mng_putchunk_ihdr(mng, w, h, MNG_BITDEPTH_8, MNG_COLORTYPE_RGBA, MNG_COMPRESSION_DEFLATE, MNG_FILTER_ADAPTIVE, MNG_INTERLACE_NONE) != 0)
+ {
+ synfig::error("%s:%d mng_putchunk_ihdr()", __FILE__, __LINE__);
+ return false;
+ }
+
+ zstream.zalloc = Z_NULL;
+ zstream.zfree = Z_NULL;
+ zstream.opaque = Z_NULL;
+
+ if (deflateInit(&zstream, /* Z_BEST_COMPRESSION */ Z_DEFAULT_COMPRESSION) != Z_OK)
+ {
+ synfig::error("%s:%d deflateInit()", __FILE__, __LINE__);
+ return false;
+ }
+
+ if (zbuffer == NULL)
+ {
+ zbuffer_len = deflateBound(&zstream,((4*w)+1)*h); // don't forget the 'filter' byte - one per scanline
+ zbuffer = (unsigned char*)realloc(zbuffer, zbuffer_len);
+ }
+
+ zstream.avail_out = zbuffer_len;
+ zstream.next_out = zbuffer;
+
+ ready=true;
+
+ return true;
+}
+
+Color*
+mng_trgt::start_scanline(int scanline __attribute__ ((unused)))
+{
+ return color_buffer;
+}
+
+bool
+mng_trgt::end_scanline()
+{
+ if (!file || !ready)
+ {
+ synfig::error("%s:%d !file or !ready", __FILE__, __LINE__);
+ return false;
+ }
+
+ *buffer = MNG_FILTER_NONE;
+ convert_color_format(buffer+1, color_buffer, desc.get_w(), PF_RGB|PF_A, gamma());
+
+ zstream.next_in = buffer;
+ zstream.avail_in = (4*w)+1;
+
+ if (deflate(&zstream,Z_NO_FLUSH) != Z_OK) {
+ synfig::error("%s:%d deflate()", __FILE__, __LINE__);
+ return false;
+ }
+
+ return true;
+}
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