1 /*! ========================================================================
3 ** bsd_mpeg1 Target Module
4 ** $Id: trgt_mpg.cpp,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $
6 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
8 ** This package is free software; you can redistribute it and/or
9 ** modify it under the terms of the GNU General Public License as
10 ** published by the Free Software Foundation; either version 2 of
11 ** the License, or (at your option) any later version.
13 ** This package is distributed in the hope that it will be useful,
14 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 ** General Public License for more details.
18 ** === N O T E S ===========================================================
20 ** ========================================================================= */
22 /* === H E A D E R S ======================================================= */
33 #include <ETL/stringf>
41 /* === M A C R O S ========================================================= */
43 using namespace synfig;
47 /* === G L O B A L S ======================================================= */
49 const char bsd_mpeg1::Name[]="mpeg1";
50 const char bsd_mpeg1::Ext[]="mpg";
52 #define tmp_dir string("/tmp/")
54 /* === M E T H O D S ======================================================= */
57 bsd_mpeg1::New(const char *filename)
59 return new bsd_mpeg1(filename);
62 bsd_mpeg1::bsd_mpeg1(const char *Filename)
65 passthru=ppm::New((tmp_dir+"temp.ppm").c_str());
70 bsd_mpeg1::~bsd_mpeg1()
75 cerr<<"Encoding "<<filename<<"with \"mpeg_encode\" utility..."<<endl;
76 if(system("mpeg_encode -float-dct -realquiet /tmp/temp.param")!=0)
78 cerr<<"Failed to encode "<<filename<<"with \"mpeg_encode\" utility"<<endl;
79 cerr<<"Are you sure it is installed?"<<endl;
84 bsd_mpeg1::set_rend_desc(RendDesc *given_desc)
90 paramfile=fopen((tmp_dir+"temp.param").c_str(),"wt");
91 int bitrate=150; // kbytes per second
92 int buffer_drift=50; // bitrate drift (in kbytes per second)
98 "PATTERN IBBPBBPBBPBBPBBP\n"
100 "BASE_FILE_FORMAT PPM\n"
103 "SLICES_PER_FRAME 1\n"
107 "PSEARCH_ALG LOGARITHMIC\n"
108 "BSEARCH_ALG CROSS2\n"
115 "REFERENCE_FRAME ORIGINAL\n"
117 // "BIT_RATE 1000000\n"
118 // "BUFFER_SIZE 327680\n"
120 ,filename.c_str(),bitrate,buffer_drift);
121 float fps=given_desc->get_frame_rate();
124 // 23.976, 24, 25, 29.97, 30, 50 ,59.94, 60
128 fprintf(paramfile,"FRAME_RATE 23.976\n");
129 given_desc->set_frame_rate(23.976);
131 if(fps>=24.0 && fps <25.0)
133 fprintf(paramfile,"FRAME_RATE 24\n");
134 given_desc->set_frame_rate(24);
136 if(fps>=25.0 && fps <29.97)
138 fprintf(paramfile,"FRAME_RATE 25\n");
139 given_desc->set_frame_rate(25);
141 if(fps>=29.97 && fps <30.0)
143 fprintf(paramfile,"FRAME_RATE 29.97\n");
144 given_desc->set_frame_rate(29.97);
146 if(fps>=29.97 && fps <30.0)
148 fprintf(paramfile,"FRAME_RATE 29.97\n");
149 given_desc->set_frame_rate(29.97);
151 if(fps>=30.0 && fps <50.0)
153 fprintf(paramfile,"FRAME_RATE 30\n");
154 given_desc->set_frame_rate(30.0);
156 if(fps>=50.0 && fps <59.94)
158 fprintf(paramfile,"FRAME_RATE 50\n");
159 given_desc->set_frame_rate(50);
163 fprintf(paramfile,"FRAME_RATE 59.94\n");
164 given_desc->set_frame_rate(59.94);
167 // Make sure that the width and height
168 // are multiples of 8
169 given_desc->set_w((given_desc->get_w()+4)/8*8);
170 given_desc->set_h((given_desc->get_h()+4)/8*8);
172 if(!passthru->set_rend_desc(given_desc))
179 "tmp/temp*.ppm [%04d-%04d]\n"
180 "END_INPUT\n",desc.get_frame_start(),desc.get_frame_end()-1);
189 bsd_mpeg1::end_frame()
191 passthru->end_frame();
195 bsd_mpeg1::start_frame(synfig::ProgressCallback *callback)
197 return passthru->start_frame(callback);
201 bsd_mpeg1::start_scanline(int scanline)
203 return passthru->start_scanline(scanline);
207 bsd_mpeg1::end_scanline(void)
209 return passthru->end_scanline();