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         video_codec = params.video_codec;
  94         bitrate = params.bitrate;
  95 }
  96
  97 ffmpeg_trgt::~ffmpeg_trgt()
  98 {
  99         if(file)
 100         {
 101                 etl::yield();
 102                 sleep(1);
 103 #if defined(WIN32_PIPE_TO_PROCESSES)
 104                 pclose(file);
 105 #elif defined(UNIX_PIPE_TO_PROCESSES)
 106                 fclose(file);
 107                 int status;
 108                 waitpid(pid,&status,0);
 109 #endif
 110         }
 111         file=NULL;
 112         delete [] buffer;
 113         delete [] color_buffer;
 114 }
 115
 116 bool
 117 ffmpeg_trgt::set_rend_desc(RendDesc *given_desc)
 118 {
 119         //given_desc->set_pixel_format(PF_RGB);
 120
 121         // Make sure that the width and height
 122         // are multiples of 8
 123         given_desc->set_w((given_desc->get_w()+4)/8*8);
 124         given_desc->set_h((given_desc->get_h()+4)/8*8);
 125
 126         /*
 127         // Valid framerates:
 128         // 23.976, 24, 25, 29.97, 30, 50 ,59.94, 60
 129         float fps=given_desc->get_frame_rate();
 130         if(fps <24.0)
 131                 given_desc->set_frame_rate(23.976);
 132         if(fps>=24.0 && fps <25.0)
 133                 given_desc->set_frame_rate(24);
 134         if(fps>=25.0 && fps <29.97)
 135                 given_desc->set_frame_rate(25);
 136         if(fps>=29.97 && fps <30.0)
 137                 given_desc->set_frame_rate(29.97);
 138         if(fps>=29.97 && fps <30.0)
 139                 given_desc->set_frame_rate(29.97);
 140         if(fps>=30.0 && fps <50.0)
 141                 given_desc->set_frame_rate(30.0);
 142         if(fps>=50.0 && fps <59.94)
 143                 given_desc->set_frame_rate(50);
 144         if(fps>=59.94)
 145                 given_desc->set_frame_rate(59.94);
 146     */
 147
 148         desc=*given_desc;
 149
 150         return true;
 151 }
 152
 153 bool
 154 ffmpeg_trgt::init()
 155 {
 156         imagecount=desc.get_frame_start();
 157         if(desc.get_frame_end()-desc.get_frame_start()>0)
 158                 multi_image=true;
 159
 160 #if defined(WIN32_PIPE_TO_PROCESSES)
 161
 162         string command;
 163
 164         if( filename.c_str()[0] == '-' )
 165                 command = strprintf("ffmpeg -f image2pipe -vcodec ppm -an"
 166                                                         " -r %f -i pipe: -loop_input"
 167                                                         " -metadata title=\"%s\" "
 168                                                         " -vcodec %s -b %ik"
 169                                                         " -y -- \"%s\"\n",
 170                                                         desc.get_frame_rate(),
 171                                                         get_canvas()->get_name().c_str(),
 172                                                         video_codec.c_str(), bitrate,
 173                                                         filename.c_str());
 174         else
 175                 command = strprintf("ffmpeg -f image2pipe -vcodec ppm -an"
 176                                                         " -r %f -i pipe: -loop_input"
 177                                                         " -metadata title=\"%s\" "
 178                                                         "-vcodec %s -b %ik"
 179                                                         " -y -- \"%s\"\n",
 180                                                         desc.get_frame_rate(),
 181                                                         get_canvas()->get_name().c_str(),
 182                                                         video_codec.c_str(), bitrate,
 183                                                         filename.c_str());
 184
 185         file=popen(command.c_str(),POPEN_BINARY_WRITE_TYPE);
 186
 187 #elif defined(UNIX_PIPE_TO_PROCESSES)
 188
 189         int p[2];
 190
 191         if (pipe(p)) {
 192                 synfig::error(_("Unable to open pipe to ffmpeg"));
 193                 return false;
 194         };
 195
 196         pid = fork();
 197
 198         if (pid == -1) {
 199                 synfig::error(_("Unable to open pipe to ffmpeg"));
 200                 return false;
 201         }
 202
 203         if (pid == 0){
 204                 // Child process
 205                 // Close pipeout, not needed
 206                 close(p[1]);
 207                 // Dup pipeout to stdin
 208                 if( dup2( p[0], STDIN_FILENO ) == -1 ){
 209                         synfig::error(_("Unable to open pipe to ffmpeg"));
 210                         return false;
 211                 }
 212                 // Close the unneeded pipeout
 213                 close(p[0]);
 214                 if( filename.c_str()[0] == '-' )
 215                         execlp("ffmpeg", "ffmpeg", "-f", "image2pipe", "-vcodec",
 216                                    "ppm", "-an", "-r",
 217                                    strprintf("%f", desc.get_frame_rate()).c_str(),
 218                                    "-i", "pipe:", "-loop_input",
 219                                    "-metadata",
 220                                    strprintf("title=\"%s\"", get_canvas()->get_name().c_str()).c_str(),
 221                                    "-vcodec", video_codec.c_str(),
 222                                    "-b", strprintf("%ik", bitrate).c_str(),
 223                                    "-y", "--", filename.c_str(), (const char *)NULL);
 224                 else
 225                         execlp("ffmpeg", "ffmpeg", "-f", "image2pipe", "-vcodec",
 226                                    "ppm", "-an", "-r",
 227                                    strprintf("%f", desc.get_frame_rate()).c_str(),
 228                                    "-i", "pipe:", "-loop_input",
 229                                    "-metadata",
 230                                    strprintf("title=\"%s\"", get_canvas()->get_name().c_str()).c_str(),
 231                                    "-vcodec", video_codec.c_str(),
 232                                    "-b", strprintf("%ik", bitrate).c_str(),
 233                                    "-y", filename.c_str(), (const char *)NULL);
 234
 235                 // We should never reach here unless the exec failed
 236                 synfig::error(_("Unable to open pipe to ffmpeg"));
 237                 return false;
 238         } else {
 239                 // Parent process
 240                 // Close pipein, not needed
 241                 close(p[0]);
 242                 // Save pipeout to file handle, will write to it later
 243                 file = fdopen(p[1], "wb");
 244         }
 245
 246 #else
 247         #error There are no known APIs for creating child processes
 248 #endif
 249
 250         // etl::yield();
 251
 252         if(!file)
 253         {
 254                 synfig::error(_("Unable to open pipe to ffmpeg"));
 255                 return false;
 256         }
 257
 258         return true;
 259 }
 260
 261 void
 262 ffmpeg_trgt::end_frame()
 263 {
 264         //fprintf(file, " ");
 265         fflush(file);
 266         imagecount++;
 267 }
 268
 269 bool
 270 ffmpeg_trgt::start_frame(synfig::ProgressCallback */*callback*/)
 271 {
 272         int w=desc.get_w(),h=desc.get_h();
 273
 274         if(!file)
 275                 return false;
 276
 277         fprintf(file, "P6\n");
 278         fprintf(file, "%d %d\n", w, h);
 279         fprintf(file, "%d\n", 255);
 280
 281         delete [] buffer;
 282         buffer=new unsigned char[3*w];
 283         delete [] color_buffer;
 284         color_buffer=new Color[w];
 285
 286         return true;
 287 }
 288
 289 Color *
 290 ffmpeg_trgt::start_scanline(int /*scanline*/)
 291 {
 292         return color_buffer;
 293 }
 294
 295 bool
 296 ffmpeg_trgt::end_scanline()
 297 {
 298         if(!file)
 299                 return false;
 300
 301         convert_color_format(buffer, color_buffer, desc.get_w(), PF_RGB, gamma());
 302
 303         if(!fwrite(buffer,1,desc.get_w()*3,file))
 304                 return false;
 305
 306         return true;
 307 }