-/*! ========================================================================
-** Sinfg
-** BMP Target Module
-** $Id: trgt_gif.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $
+/* === S Y N F I G ========================================================= */
+/*! \file trgt_gif.cpp
+** \brief BMP Target Module
**
-** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+** $Id$
**
-** This software and associated documentation
-** are CONFIDENTIAL and PROPRIETARY property of
-** the above-mentioned copyright holder.
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 Chris Moore
**
-** You may not copy, print, publish, or in any
-** other way distribute this software without
-** a prior written agreement with
-** the copyright holder.
+** 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 SINFG_TARGET
+#define SYNFIG_TARGET
#ifdef USING_PCH
# include "pch.h"
/* === M A C R O S ========================================================= */
-using namespace sinfg;
+using namespace synfig;
using namespace std;
using namespace etl;
/* === G L O B A L S ======================================================= */
-SINFG_TARGET_INIT(gif);
-SINFG_TARGET_SET_NAME(gif,"gif");
-SINFG_TARGET_SET_EXT(gif,"gif");
-SINFG_TARGET_SET_VERSION(gif,"0.1");
-SINFG_TARGET_SET_CVS_ID(gif,"$Id: trgt_gif.cpp,v 1.1.1.1 2005/01/04 01:23:10 darco Exp $");
+SYNFIG_TARGET_INIT(gif);
+SYNFIG_TARGET_SET_NAME(gif,"gif");
+SYNFIG_TARGET_SET_EXT(gif,"gif");
+SYNFIG_TARGET_SET_VERSION(gif,"0.1");
+SYNFIG_TARGET_SET_CVS_ID(gif,"$Id$");
/* === M E T H O D S ======================================================= */
gif::gif(const char *filename_):
filename(filename_),
- file( (filename=="-")?stdout:fopen(filename_,"wb") ),
+ file( (filename=="-")?stdout:fopen(filename_,POPEN_BINARY_WRITE_TYPE) ),
imagecount(0),
-
+
lossy(true),
- multi_image(false),
+ multi_image(false),
dithering(true),
color_bits(8),
iframe_density(30),
loop_count(0x7fff),
- local_palette(true)
+ local_palette(true)
{
}
gif::init()
{
int w=desc.get_w(),h=desc.get_h();
-
+
if(!file)
{
- sinfg::error(strprintf(_("Unable to open \"%s\" for write access!"),filename.c_str()));
+ synfig::error(strprintf(_("Unable to open \"%s\" for write access!"),filename.c_str()));
return false;
}
-
+
rootsize=color_bits; // Size of pixel bits
curr_frame.set_wh(w,h);
curr_frame.clear();
prev_frame.clear();
curr_surface.clear();
-
+
if(get_quality()>5)
lossy=true;
else
fputc(0xF0+(rootsize-1),file.get()); // flags
else
fputc((0xF0+(rootsize-1))&~(1<<7),file.get()); // flags
-
- fputc(0,file.get()); // backgound color
+
+ fputc(0,file.get()); // background color
fputc(0,file.get()); // Pixel Aspect Ratio
-
- DEBUGPOINT();
-
+
if(!local_palette)
{
- DEBUGPOINT();
curr_palette=Palette::grayscale(256/(1<<(8-rootsize))-1);
output_curr_palette();
}
-
+
if(loop_count && multi_image)
{
- DEBUGPOINT();
fputc(33,file.get()); // 33 (hex 0x21) GIF Extension code
fputc(255,file.get()); // 255 (hex 0xFF) Application Extension Label
- fputc(11,file.get()); // 11 (hex (0x0B) Length of Application Block
+ fputc(11,file.get()); // 11 (hex (0x0B) Length of Application Block
fprintf(file.get(),"NETSCAPE2.0");
- fputc(3,file.get()); // 3 (hex 0x03) Length of Data Sub-Block
+ fputc(3,file.get()); // 3 (hex 0x03) Length of Data Sub-Block
fputc(1,file.get()); // 1 (hex 0x01)
fputc(loop_count&0x000000ff,file.get());
fputc((loop_count&0x0000ff00)>>8,file.get());
- fputc(0,file.get()); // 0 (hex 0x00) a Data Sub-block Terminator.
+ fputc(0,file.get()); // 0 (hex 0x00) a Data Sub-block Terminator.
}
- DEBUGPOINT();
-
+
return true;
}
// Output the color table
for(i=0;i<256/(1<<(8-rootsize));i++)
{
-// if(i && (i-1)<curr_palette.size())
+ if(i<(signed)curr_palette.size())
{
Color color(curr_palette[i].color.clamped());
//fputc(i*(1<<(8-rootsize)),file.get());
fputc(gamma().g_F32_to_U8(color.get_g()),file.get());
fputc(gamma().b_F32_to_U8(color.get_b()),file.get());
}
-/* else
+ else
{
fputc(255,file.get());
fputc(0,file.get());
fputc(255,file.get());
}
-*/
}
}
bool
-gif::start_frame(sinfg::ProgressCallback *callback)
+gif::start_frame(synfig::ProgressCallback *callback)
{
// int
// w=desc.get_w(),
// h=desc.get_h();
-
+
if(!file)
{
if(callback)callback->error(string("BUG:")+_("Description not set!"));
return false;
}
-
+
if(callback)callback->task(filename+strprintf(" %d",imagecount));
-
+
return true;
}
unsigned int value;
int
delaytime=round_to_int(100.0/desc.get_frame_rate());
-
+
bool build_off_previous(multi_image);
Palette prev_palette(curr_palette);
-
+
// Fill in the background color
if(!get_remove_alpha())
{
pen.dec_x(x);
}
}
-
+
if(local_palette)
{
curr_palette=Palette(curr_surface,256/(1<<(8-rootsize))-build_off_previous-1);
- sinfg::info("curr_palette.size()=%d",curr_palette.size());
+ synfig::info("curr_palette.size()=%d",curr_palette.size());
}
-
+
int transparent_index(curr_palette.find_closest(Color(1,0,1,0))-curr_palette.begin());
bool has_transparency(curr_palette[transparent_index].color.get_a()<=0.00001);
-
+
if(has_transparency)
build_off_previous=false;
-
+
if(build_off_previous)
{
transparent_index=0;
has_transparency=true;
}
-
+
#define DISPOSE_UNDEFINED (0)
#define DISPOSE_NONE (1<<2)
#define DISPOSE_RESTORE_BGCOLOR (2<<2)
gec_flags|=DISPOSE_RESTORE_PREVIOUS;
if(has_transparency)
gec_flags|=1;
-
+
// output the Graphic Control Extension
fputc(0x21,file.get()); // Extension introducer
fputc(0xF9,file.get()); // Graphic Control Label
fputc((delaytime&0x0000ff00)>>8,file.get()); // Delay Time (LSB)
fputc(transparent_index,file.get()); // Transparent Color Index
fputc(0,file.get()); // Block Terminator
-
+
// output the image header
fputc(',',file.get());
fputc(0,file.get()); // image left
else
fputc(0x00+ rootsize-1,file.get()); // flags
-
+
if(local_palette)
{
Palette out(curr_palette);
-
+
if(build_off_previous)
curr_palette.insert(curr_palette.begin(),Color(1,0,1,0));
output_curr_palette();
curr_palette=out;
}
-
+
bs=bitstream(file);
// Prepare ourselves for LZW compression
nextcode=(1<<rootsize)+2;
table=lzwcode::NewTable((1<<rootsize));
node=table;
-
+
// Output the rootsize
fputc(rootsize,file.get()); // rootsize;
for(int cur_scanline=0;cur_scanline<desc.get_h();cur_scanline++)
{
//convert_color_format(curr_frame[cur_scanline], curr_surface[cur_scanline], desc.get_w(), PF_GRAY, gamma());
-
+
// Now we compress it!
for(i=0;i<w;i++)
{
Color color(curr_surface[cur_scanline][i].clamped());
Palette::iterator iter(curr_palette.find_closest(color));
-
+
if(dithering)
{
Color error(color-iter->color);
if(curr_surface.get_w()>i+1)
curr_surface[cur_scanline][i+1] += error * ((float)7/(float)16);
}
-
+
curr_frame[cur_scanline][i]=iter-curr_palette.begin();
-
+
value=curr_frame[cur_scanline][i];
if(build_off_previous)
value++;
if(value>(unsigned)(1<<rootsize)-1)
value=(1<<rootsize)-1;
-
+
// If the pixel is the same as the one that
// is already there, then we should make it
// transparent
{
if(lossy)
{
-
+
// Lossy
if(
abs( ( iter->color-prev_palette[prev_frame[cur_scanline][i]-1].color ).get_y() ) > (1.0/16.0) ||
else
{
// lossless version
- if(value!=prev_frame[cur_scanline][i])
+ if(value!=prev_frame[cur_scanline][i])
prev_frame[cur_scanline][i]=value;
else
value=0;
node->AddNode(nextcode, value);
bs.push_value(node->code, codesize);
node = table->FindCode(value);
-
+
// Check to see if we need to increase the codesize
if (nextcode == ( 1 << codesize))
codesize += 1;
-
+
nextcode += 1;
-
+
// check to see if we have filled up the table
if (nextcode == 4096)
{
// output the clear code: make sure to use the current
// codesize
bs.push_value((unsigned) 1 << rootsize, codesize);
-
+
delete table;
table = lzwcode::NewTable((1<<rootsize));
codesize = rootsize + 1;
nextcode = (1 << rootsize) + 2;
-
+
// since we have a new table, need the correct prefix
node = table->FindCode(value);
}
// Push the last code onto the bitstream
bs.push_value(node->code,codesize);
-
+
// Push a end-of-stream code onto the bitstream
bs.push_value((1<<rootsize)+1,codesize);
-
+
// Make sure everything is dumped out
bs.dump();
-
+
delete table;
-
+
fputc(0,file.get()); // Block terminator
fflush(file.get());
imagecount++;
}
-sinfg::Color*
+synfig::Color*
gif::start_scanline(int scanline)
{
cur_scanline=scanline;
projects / synfig.git / blobdiff