+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file trgt_yuv.cpp
-** \brief Template File
-**
-** $Id: trgt_yuv.cpp,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**
-** 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
-*/
-/* ========================================================================= */
-
-/* === 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_yuv.h"
-#include <ETL/stringf>
-#include <cstdio>
-#include <algorithm>
-#include <functional>
-#endif
-
-using namespace synfig;
-using namespace std;
-using namespace etl;
-
-/* === M A C R O S ========================================================= */
-
-#define Y_FLOOR (16)
-#define Y_CEIL (235)
-#define Y_RANGE (Y_CEIL-Y_FLOOR)
-
-#define UV_FLOOR (16)
-#define UV_CEIL (240)
-#define UV_RANGE (UV_CEIL-UV_FLOOR)
-
-/* === G L O B A L S ======================================================= */
-
-SYNFIG_TARGET_INIT(yuv);
-SYNFIG_TARGET_SET_NAME(yuv,"yuv420p");
-SYNFIG_TARGET_SET_EXT(yuv,"yuv");
-SYNFIG_TARGET_SET_VERSION(yuv,"0.1");
-SYNFIG_TARGET_SET_CVS_ID(yuv,"$Id: trgt_yuv.cpp,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $");
-
-/* === M E T H O D S ======================================================= */
-
-yuv::yuv(const char *FILENAME):
- filename(FILENAME),
- file( (filename=="-")?stdout:fopen(filename.c_str(),"wb") ),
- dithering(true)
-{
- // YUV420P doesn't have an alpha channel
- set_remove_alpha();
-}
-
-yuv::~yuv()
-{
-}
-
-bool
-yuv::set_rend_desc(RendDesc *given_desc)
-{
- given_desc->clear_flags();
-
- // Make sure our width is divisible by two
- given_desc->set_w(given_desc->get_w()*2/2);
- given_desc->set_h(given_desc->get_h()*2/2);
-
- desc=*given_desc;
-
- // Set up our surface
- surface.set_wh(desc.get_w(),desc.get_h());
-
- return true;
-}
-
-bool
-yuv::start_frame(synfig::ProgressCallback *callback)
-{
- return static_cast<bool>(file);
-}
-
-Color *
-yuv::start_scanline(int x)
-{
- return surface[x];
-}
-
-bool
-yuv::end_scanline()
-{
- return static_cast<bool>(file);
-}
-
-void
-yuv::end_frame()
-{
- const int w=desc.get_w(),h=desc.get_h();
- int x,y;
-
- assert(file);
-
- // Output Y' channel, adjusting
- // the gamma as we go
- for(y=0;y<h;y++)
- for(x=0;x<w;x++)
- {
- Color& c(surface[y][x]);
- c=c.clamped();
- c.set_r(gamma().r_F32_to_F32(c.get_r()));
- c.set_g(gamma().g_F32_to_F32(c.get_g()));
- c.set_b(gamma().b_F32_to_F32(c.get_b()));
- float f(c.get_y());
- int i(max(min(round_to_int(c.get_y()*Y_RANGE),Y_RANGE),0)+Y_FLOOR);
-
- if(dithering)
- {
- const float er(f-((float)i-Y_FLOOR)/Y_RANGE);
- const Color error(er,er,er);
-
- if(surface.get_h()>y+1)
- {
- surface[y+1][x-1]+=error * ((float)3/(float)16);
- surface[y+1][x]+=error * ((float)5/(float)16);
- if(surface.get_w()>x+1)
- surface[y+1][x+1]+=error * ((float)1/(float)16);
- }
- if(surface.get_w()>x+1)
- surface[y][x+1]+=error * ((float)7/(float)16);
- }
-
- fputc(i,file.get());
- }
-
-
- // Create new super-sampled surface
- Surface sm_surface(w/2,h/2);
- for(y=0;y<h;y+=2)
- for(x=0;x<w;x+=2)
- {
- Color c(Color::alpha());
- c+=surface[y][x];
- c+=surface[y+1][x];
- c+=surface[y][x+1];
- c+=surface[y+1][x+1];
- c/=4;
- sm_surface[y/2][x/2]=c;
- }
-
- // Output U channel
- for(y=0;y<sm_surface.get_h();y++)
- for(x=0;x<sm_surface.get_w();x++)
- {
- const Color& c(sm_surface[y][x]);
- const float f(c.get_u());
- const int i(max(min(round_to_int((f+0.5f)*UV_RANGE),UV_RANGE),0)+UV_FLOOR);
-
- if(dithering)
- {
- const float er(f-((((float)i-UV_FLOOR)/UV_RANGE)-0.5f));
- const Color error(Color::YUV(0,er,0));
-
- if(sm_surface.get_h()>y+1)
- {
- sm_surface[y+1][x-1]+=error * ((float)3/(float)16);
- sm_surface[y+1][x]+=error * ((float)5/(float)16);
- if(sm_surface.get_w()>x+1)
- sm_surface[y+1][x+1]+=error * ((float)1/(float)16);
- }
- if(sm_surface.get_w()>x+1)
- sm_surface[y][x+1]+=error * ((float)7/(float)16);
- }
- fputc(i,file.get());
- }
-
- // Output V channel
- for(y=0;y<sm_surface.get_h();y++)
- for(x=0;x<sm_surface.get_w();x++)
- {
- const Color& c(sm_surface[y][x]);
- const float f(c.get_v());
- const int i(max(min(round_to_int((f+0.5f)*UV_RANGE),UV_RANGE),0)+UV_FLOOR);
-
- if(dithering)
- {
- const float er(f-((((float)i-UV_FLOOR)/UV_RANGE)-0.5f));
- const Color error(Color::YUV(0,0,er));
-
- if(sm_surface.get_h()>y+1)
- {
- sm_surface[y+1][x-1]+=error * ((float)3/(float)16);
- sm_surface[y+1][x]+=error * ((float)5/(float)16);
- if(sm_surface.get_w()>x+1)
- sm_surface[y+1][x+1]+=error * ((float)1/(float)16);
- }
- if(sm_surface.get_w()>x+1)
- sm_surface[y][x+1]+=error * ((float)7/(float)16);
- }
- fputc(i,file.get());
- }
-
- // Flush out the frame
- fflush(file.get());
-}
projects / synfig.git / blobdiff