synfig-core/src/modules/mod_ffmpeg/trgt_ffmpeg.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file trgt_ffmpeg.cpp
   3 **      \brief ppm Target Module
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007 Chris Moore
  10 **      Copyright (c) 2010 Diego Barrios Romero
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 **
  23 ** === N O T E S ===========================================================
  24 **
  25 ** ========================================================================= */
  26
  27 /* === H E A D E R S ======================================================= */
  28
  29 #define SYNFIG_TARGET
  30
  31 #ifdef USING_PCH
  32 #       include "pch.h"
  33 #else
  34 #ifdef HAVE_CONFIG_H
  35 #       include <config.h>
  36 #endif
  37
  38 #include <ETL/stringf>
  39 #include "trgt_ffmpeg.h"
  40 #include <stdio.h>
  41 #include <sys/types.h>
  42 #if HAVE_SYS_WAIT_H
  43  #include <sys/wait.h>
  44 #endif
  45 #if HAVE_IO_H
  46  #include <io.h>
  47 #endif
  48 #if HAVE_PROCESS_H
  49  #include <process.h>
  50 #endif
  51 #if HAVE_FCNTL_H
  52  #include <fcntl.h>
  53 #endif
  54 #include <unistd.h>
  55 #include <algorithm>
  56 #include <functional>
  57 #include <ETL/clock>
  58
  59 #endif
  60
  61 /* === M A C R O S ========================================================= */
  62
  63 using namespace synfig;
  64 using namespace std;
  65 using namespace etl;
  66
  67 #if defined(HAVE_FORK) && defined(HAVE_PIPE) && defined(HAVE_WAITPID)
  68  #define UNIX_PIPE_TO_PROCESSES
  69 #else
  70  #define WIN32_PIPE_TO_PROCESSES
  71 #endif
  72
  73 /* === G L O B A L S ======================================================= */
  74
  75 SYNFIG_TARGET_INIT(ffmpeg_trgt);
  76 SYNFIG_TARGET_SET_NAME(ffmpeg_trgt,"ffmpeg");
  77 SYNFIG_TARGET_SET_EXT(ffmpeg_trgt,"mpg");
  78 SYNFIG_TARGET_SET_VERSION(ffmpeg_trgt,"0.1");
  79 SYNFIG_TARGET_SET_CVS_ID(ffmpeg_trgt,"$Id$");
  80
  81 /* === M E T H O D S ======================================================= */
  82
  83 ffmpeg_trgt::ffmpeg_trgt(const char *Filename,
  84                                                  const synfig::TargetParam& params)
  85 {
  86         pid=-1;
  87         file=NULL;
  88         filename=Filename;
  89         multi_image=false;
  90         buffer=NULL;
  91         color_buffer=0;
  92         set_remove_alpha();
  93
  94         // Set default video codec and bitrate if they weren't given.
  95         if (params.video_codec == "none")
  96                 video_codec = "mpeg1video";
  97         else
  98                 video_codec = params.video_codec;
  99
 100         if (params.bitrate == -1)
 101                 bitrate = 200;
 102         else
 103                 bitrate = params.bitrate;
 104 }
 105
 106 ffmpeg_trgt::~ffmpeg_trgt()
 107 {
 108         if(file)
 109         {
 110                 etl::yield();
 111                 sleep(1);
 112 #if defined(WIN32_PIPE_TO_PROCESSES)
 113                 pclose(file);
 114 #elif defined(UNIX_PIPE_TO_PROCESSES)
 115                 fclose(file);
 116                 int status;
 117                 waitpid(pid,&status,0);
 118 #endif
 119         }
 120         file=NULL;
 121         delete [] buffer;
 122         delete [] color_buffer;
 123 }
 124
 125 bool
 126 ffmpeg_trgt::set_rend_desc(RendDesc *given_desc)
 127 {
 128         //given_desc->set_pixel_format(PF_RGB);
 129
 130         // Make sure that the width and height
 131         // are multiples of 8
 132         given_desc->set_w((given_desc->get_w()+4)/8*8);
 133         given_desc->set_h((given_desc->get_h()+4)/8*8);
 134
 135         /*
 136         // Valid framerates:
 137         // 23.976, 24, 25, 29.97, 30, 50 ,59.94, 60
 138         float fps=given_desc->get_frame_rate();
 139         if(fps <24.0)
 140                 given_desc->set_frame_rate(23.976);
 141         if(fps>=24.0 && fps <25.0)
 142                 given_desc->set_frame_rate(24);
 143         if(fps>=25.0 && fps <29.97)
 144                 given_desc->set_frame_rate(25);
 145         if(fps>=29.97 && fps <30.0)
 146                 given_desc->set_frame_rate(29.97);
 147         if(fps>=29.97 && fps <30.0)
 148                 given_desc->set_frame_rate(29.97);
 149         if(fps>=30.0 && fps <50.0)
 150                 given_desc->set_frame_rate(30.0);
 151         if(fps>=50.0 && fps <59.94)
 152                 given_desc->set_frame_rate(50);
 153         if(fps>=59.94)
 154                 given_desc->set_frame_rate(59.94);
 155     */
 156
 157         desc=*given_desc;
 158
 159         return true;
 160 }
 161
 162 bool
 163 ffmpeg_trgt::init()
 164 {
 165         imagecount=desc.get_frame_start();
 166         if(desc.get_frame_end()-desc.get_frame_start()>0)
 167                 multi_image=true;
 168
 169 #if defined(WIN32_PIPE_TO_PROCESSES)
 170
 171         string command;
 172
 173         if( filename.c_str()[0] == '-' )
 174                 command = strprintf("ffmpeg -f image2pipe -vcodec ppm -an"
 175                                                         " -r %f -i pipe: -loop_input"
 176                                                         " -metadata title=\"%s\" "
 177                                                         " -vcodec %s -b %ik"
 178                                                         " -y -- \"%s\"\n",
 179                                                         desc.get_frame_rate(),
 180                                                         get_canvas()->get_name().c_str(),
 181                                                         video_codec.c_str(), bitrate,
 182                                                         filename.c_str());
 183         else
 184                 command = strprintf("ffmpeg -f image2pipe -vcodec ppm -an"
 185                                                         " -r %f -i pipe: -loop_input"
 186                                                         " -metadata title=\"%s\" "
 187                                                         "-vcodec %s -b %ik"
 188                                                         " -y -- \"%s\"\n",
 189                                                         desc.get_frame_rate(),
 190                                                         get_canvas()->get_name().c_str(),
 191                                                         video_codec.c_str(), bitrate,
 192                                                         filename.c_str());
 193
 194         file=popen(command.c_str(),POPEN_BINARY_WRITE_TYPE);
 195
 196 #elif defined(UNIX_PIPE_TO_PROCESSES)
 197
 198         int p[2];
 199
 200         if (pipe(p)) {
 201                 synfig::error(_("Unable to open pipe to ffmpeg"));
 202                 return false;
 203         };
 204
 205         pid = fork();
 206
 207         if (pid == -1) {
 208                 synfig::error(_("Unable to open pipe to ffmpeg"));
 209                 return false;
 210         }
 211
 212         if (pid == 0){
 213                 // Child process
 214                 // Close pipeout, not needed
 215                 close(p[1]);
 216                 // Dup pipeout to stdin
 217                 if( dup2( p[0], STDIN_FILENO ) == -1 ){
 218                         synfig::error(_("Unable to open pipe to ffmpeg"));
 219                         return false;
 220                 }
 221                 // Close the unneeded pipeout
 222                 close(p[0]);
 223                 if( filename.c_str()[0] == '-' )
 224                         execlp("ffmpeg", "ffmpeg", "-f", "image2pipe", "-vcodec",
 225                                    "ppm", "-an", "-r",
 226                                    strprintf("%f", desc.get_frame_rate()).c_str(),
 227                                    "-i", "pipe:", "-loop_input",
 228                                    "-metadata",
 229                                    strprintf("title=\"%s\"", get_canvas()->get_name().c_str()).c_str(),
 230                                    "-vcodec", video_codec.c_str(),
 231                                    "-b", strprintf("%ik", bitrate).c_str(),
 232                                    "-y", "--", filename.c_str(), (const char *)NULL);
 233                 else
 234                         execlp("ffmpeg", "ffmpeg", "-f", "image2pipe", "-vcodec",
 235                                    "ppm", "-an", "-r",
 236                                    strprintf("%f", desc.get_frame_rate()).c_str(),
 237                                    "-i", "pipe:", "-loop_input",
 238                                    "-metadata",
 239                                    strprintf("title=\"%s\"", get_canvas()->get_name().c_str()).c_str(),
 240                                    "-vcodec", video_codec.c_str(),
 241                                    "-b", strprintf("%ik", bitrate).c_str(),
 242                                    "-y", filename.c_str(), (const char *)NULL);
 243
 244                 // We should never reach here unless the exec failed
 245                 synfig::error(_("Unable to open pipe to ffmpeg"));
 246                 return false;
 247         } else {
 248                 // Parent process
 249                 // Close pipein, not needed
 250                 close(p[0]);
 251                 // Save pipeout to file handle, will write to it later
 252                 file = fdopen(p[1], "wb");
 253         }
 254
 255 #else
 256         #error There are no known APIs for creating child processes
 257 #endif
 258
 259         // etl::yield();
 260
 261         if(!file)
 262         {
 263                 synfig::error(_("Unable to open pipe to ffmpeg"));
 264                 return false;
 265         }
 266
 267         return true;
 268 }
 269
 270 void
 271 ffmpeg_trgt::end_frame()
 272 {
 273         //fprintf(file, " ");
 274         fflush(file);
 275         imagecount++;
 276 }
 277
 278 bool
 279 ffmpeg_trgt::start_frame(synfig::ProgressCallback */*callback*/)
 280 {
 281         int w=desc.get_w(),h=desc.get_h();
 282
 283         if(!file)
 284                 return false;
 285
 286         fprintf(file, "P6\n");
 287         fprintf(file, "%d %d\n", w, h);
 288         fprintf(file, "%d\n", 255);
 289
 290         delete [] buffer;
 291         buffer=new unsigned char[3*w];
 292         delete [] color_buffer;
 293         color_buffer=new Color[w];
 294
 295         return true;
 296 }
 297
 298 Color *
 299 ffmpeg_trgt::start_scanline(int /*scanline*/)
 300 {
 301         return color_buffer;
 302 }
 303
 304 bool
 305 ffmpeg_trgt::end_scanline()
 306 {
 307         if(!file)
 308                 return false;
 309
 310         convert_color_format(buffer, color_buffer, desc.get_w(), PF_RGB, gamma());
 311
 312         if(!fwrite(buffer,1,desc.get_w()*3,file))
 313                 return false;
 314
 315         return true;
 316 }