gtk2_ardour/transcode_ffmpeg.cc

   1 /*
   2     Copyright (C) 2010-2013 Paul Davis
   3     Author: Robin Gareus <robin@gareus.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <sstream>
  23 #include <sys/types.h>
  24
  25 #include "pbd/error.h"
  26 #include "pbd/convert.h"
  27 #include "pbd/file_utils.h"
  28 #include "gui_thread.h"
  29
  30 #include "ardour/filesystem_paths.h"
  31
  32 #include "transcode_ffmpeg.h"
  33 #include "utils_videotl.h"
  34
  35 #include "pbd/i18n.h"
  36
  37 using namespace PBD;
  38 using namespace VideoUtils;
  39
  40 TranscodeFfmpeg::TranscodeFfmpeg (std::string f)
  41         : infile(f)
  42 {
  43         probeok = false;
  44         ffexecok = false;
  45         m_duration = 0;
  46         m_avoffset = m_lead_in = m_lead_out = 0;
  47         m_width = m_height = 0;
  48         m_aspect = m_fps = 0;
  49         m_sar = "";
  50 #if 1 /* tentative debug mode */
  51         debug_enable = false;
  52 #endif
  53
  54         if (!ARDOUR::ArdourVideoToolPaths::transcoder_exe(ffmpeg_exe, ffprobe_exe)) {
  55                 warning << string_compose(
  56                                 _(
  57                                         "ffmpeg installation was not found on this system.\n"
  58                                         "%1 requires ffmpeg and ffprobe from ffmpeg.org - version 1.1 or newer.\n"
  59                                         "Video import and export is not possible until you install tools.\n"
  60                                         "\n"
  61                                         "The tools are included with the %1 releases from ardour.org "
  62                                         "and also available with the video-server at http://x42.github.com/harvid/\n"
  63                                         "\n"
  64                                         "Important: the files need to be installed in $PATH and named ffmpeg_harvid and ffprobe_harvid.\n"
  65                                         "If you already have a suitable ffmpeg installation on your system, we recommend creating "
  66                                         "symbolic links from ffmpeg to ffmpeg_harvid and from ffprobe to ffprobe_harvid.\n"
  67                                         "\n"
  68                                         "see also http://manual.ardour.org/video-timeline/setup/"
  69                                  ), PROGRAM_NAME) << endmsg;
  70                 return;
  71         }
  72         ffexecok = true;
  73
  74         if (infile.empty() || !probe()) {
  75                 return;
  76         }
  77         probeok = true;
  78 }
  79
  80 TranscodeFfmpeg::~TranscodeFfmpeg ()
  81 {
  82   ;
  83 }
  84
  85 bool
  86 TranscodeFfmpeg::probe ()
  87 {
  88         ffoutput = "";
  89         char **argp;
  90         argp=(char**) calloc(7,sizeof(char*));
  91         argp[0] = strdup(ffprobe_exe.c_str());
  92         argp[1] = strdup("-print_format");
  93         argp[2] = strdup("csv=nk=0");
  94         argp[3] = strdup("-show_format");
  95         argp[4] = strdup("-show_streams");
  96         argp[5] = strdup(infile.c_str());
  97         argp[6] = 0;
  98         ffcmd = new ARDOUR::SystemExec(ffprobe_exe, argp);
  99         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffprobeparse, this, _1 ,_2));
 100         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 101         if (ffcmd->start(1)) {
 102                 ffexit();
 103                 return false;
 104         }
 105
 106         /* wait for ffprobe process to exit */
 107         ffcmd->wait();
 108
 109         /* wait for interposer thread to copy all data.
 110          * SystemExec::Terminated is emitted and ffcmd set to NULL */
 111         int timeout = 300; // 1.5 sec
 112         while (ffcmd && --timeout > 0) {
 113                 Glib::usleep(5000);
 114                 ARDOUR::GUIIdle();
 115         }
 116         if (timeout == 0 || ffoutput.empty()) {
 117                 return false;
 118         }
 119
 120         /* parse */
 121
 122         std::vector<std::vector<std::string> > lines;
 123         ParseCSV(ffoutput, lines);
 124         double timebase = 0;
 125         m_width = m_height = 0;
 126         m_fps = m_aspect = 0;
 127         m_duration = 0;
 128         m_sar.clear();
 129         m_codec.clear();
 130         m_audio.clear();
 131
 132 #define PARSE_FRACTIONAL_FPS(VAR) \
 133         { \
 134                 std::string::size_type pos; \
 135                 VAR = atof(value); \
 136                 pos = value.find_first_of('/'); \
 137                 if (pos != std::string::npos) { \
 138                         VAR = atof(value.substr(0, pos)) / atof(value.substr(pos+1)); \
 139                 } \
 140         }
 141
 142         std::string duration_from_format;
 143
 144         for (std::vector<std::vector<std::string> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 145                 if (i->at(0) == X_("format")) {
 146                         /* format,filename,#streams,format-name,format-long-name,start-time,duration,size,bitrate */
 147                         for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 148                                 const size_t kvsep = kv->find('=');
 149                                 if(kvsep == std::string::npos) continue;
 150                                 std::string key = kv->substr(0, kvsep);
 151                                 std::string value = kv->substr(kvsep + 1);
 152                                 if (key == X_("duration")) {
 153                                         duration_from_format = value;
 154                                 }
 155                         }
 156                 } else
 157                 if (i->at(0) == X_("stream")) {
 158                         if (i->at(5) == X_("codec_type=video") && m_width == 0) {
 159
 160                                 for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 161                                         const size_t kvsep = kv->find('=');
 162                                         if(kvsep == std::string::npos) continue;
 163                                         std::string key = kv->substr(0, kvsep);
 164                                         std::string value = kv->substr(kvsep + 1);
 165
 166                                         if (key == X_("index")) {
 167                                                 m_videoidx = atoi(value);
 168                                         } else if (key == X_("width")) {
 169                                                 m_width = atoi(value);
 170                                         } else if (key == X_("height")) {
 171                                                 m_height = atoi(value);
 172                                         } else if (key == X_("codec_name")) {
 173                                                 if (!m_codec.empty()) m_codec += " ";
 174                                                 m_codec += value;
 175                                         } else if (key == X_("codec_long_name")) {
 176                                                 if (!m_codec.empty()) m_codec += " ";
 177                                                 m_codec += "[" + value + "]";
 178                                         } else if (key == X_("codec_tag_string")) {
 179                                                 if (!m_codec.empty()) m_codec += " ";
 180                                                 m_codec += "(" + value + ")";
 181                                         } else if (key == X_("r_frame_rate")) {
 182                                                 PARSE_FRACTIONAL_FPS(m_fps)
 183                                         } else if (key == X_("avg_frame_rate") && m_fps == 0) {
 184                                                 PARSE_FRACTIONAL_FPS(m_fps)
 185                                         } else if (key == X_("time_base")) {
 186                                                 PARSE_FRACTIONAL_FPS(timebase)
 187                                         } else if (key == X_("timecode") && m_duration == 0 && m_fps > 0) {
 188                                                 int h,m,s; char f[32];
 189                                                 if (sscanf(i->at(16).c_str(), "%d:%d:%d:%32s",&h,&m,&s,f) == 4) {
 190                                                         m_duration = (ARDOUR::samplecnt_t) floor(m_fps * (
 191                                                                         h * 3600.0
 192                                                                 + m * 60.0
 193                                                                 + s * 1.0
 194                                                                 + atoi(f) / pow((double)10, (int)strlen(f))
 195                                                         ));
 196                                                 }
 197                                         } else if (key == X_("duration_ts") && m_fps == 0 && timebase !=0 ) {
 198                                                 m_duration = atof(value) * m_fps * timebase;
 199                                         } else if (key == X_("duration") && m_fps != 0 && m_duration == 0) {
 200                                                 m_duration = atof(value) * m_fps;
 201                                         } else if (key == X_("sample_aspect_ratio")) {
 202                                                 std::string::size_type pos;
 203                                                 pos = value.find_first_of(':');
 204                                                 if (pos != std::string::npos && atof(value.substr(pos+1)) != 0) {
 205                                                         m_sar = value;
 206                                                         m_sar.replace(pos, 1, "/");
 207                                                 }
 208                                         } else if (key == X_("display_aspect_ratio")) {
 209                                                 std::string::size_type pos;
 210                                                 pos = value.find_first_of(':');
 211                                                 if (pos != std::string::npos && atof(value.substr(pos+1)) != 0) {
 212                                                         m_aspect = atof(value.substr(0, pos)) / atof(value.substr(pos+1));
 213                                                 }
 214                                         }
 215                                 }
 216
 217                                 if (m_aspect == 0) {
 218                                         m_aspect = (double)m_width / (double)m_height;
 219                                 }
 220
 221                         } else if (i->at(5) == X_("codec_type=audio")) { /* new ffprobe */
 222                                 FFAudioStream as;
 223                                 for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
 224                                         const size_t kvsep = kv->find('=');
 225                                         if(kvsep == std::string::npos) continue;
 226                                         std::string key = kv->substr(0, kvsep);
 227                                         std::string value = kv->substr(kvsep + 1);
 228
 229                                         if (key == X_("channels")) {
 230                                                 as.channels   = atoi(value);
 231                                         } else if (key == X_("index")) {
 232                                                 as.stream_id  = value;
 233                                         } else if (key == X_("codec_long_name")) {
 234                                                 if (!as.name.empty()) as.name += " ";
 235                                                 as.name += value;
 236                                         } else if (key == X_("codec_name")) {
 237                                                 if (!as.name.empty()) as.name += " ";
 238                                                 as.name += value;
 239                                         } else if (key == X_("sample_fmt")) {
 240                                                 if (!as.name.empty()) as.name += " ";
 241                                                 as.name += "FMT:" + value;
 242                                         } else if (key == X_("sample_rate")) {
 243                                                 if (!as.name.empty()) as.name += " ";
 244                                                 as.name += "SR:" + value;
 245                                         }
 246
 247                                 }
 248                                 m_audio.push_back(as);
 249                         }
 250                 }
 251         }
 252         /* end parse */
 253
 254         if (m_duration == 0 && !duration_from_format.empty() && m_fps > 0) {
 255                 warning << "using video-duration from format (container)." << endmsg;
 256                 m_duration = atof(duration_from_format) * m_fps;
 257         }
 258
 259 #if 0 /* DEBUG */
 260         printf("FPS: %f\n", m_fps);
 261         printf("Duration: %lu frames\n",(unsigned long)m_duration);
 262         printf("W/H: %ix%i\n",m_width, m_height);
 263         printf("aspect: %f\n",m_aspect);
 264         printf("codec: %s\n",m_codec.c_str());
 265         if (m_audio.size() > 0) {
 266                 for (AudioStreams::iterator it = m_audio.begin(); it < m_audio.end(); ++it) {
 267                         printf("audio: %s - %i channels\n",(*it).stream_id.c_str(), (*it).channels);
 268                 }
 269         } else {
 270           printf("audio: no audio streams in file.\n");
 271         }
 272 #endif
 273
 274         return true;
 275 }
 276
 277 TranscodeFfmpeg::FFSettings
 278 TranscodeFfmpeg::default_encoder_settings ()
 279 {
 280         TranscodeFfmpeg::FFSettings ffs;
 281         ffs.clear();
 282         ffs["-vcodec"] = "mpeg4";
 283         ffs["-acodec"] = "ac3";
 284         ffs["-b:v"] = "5000k";
 285         ffs["-b:a"] = "160k";
 286         return ffs;
 287 }
 288
 289 TranscodeFfmpeg::FFSettings
 290 TranscodeFfmpeg::default_meta_data ()
 291 {
 292         TranscodeFfmpeg::FFSettings ffm;
 293         ffm.clear();
 294         ffm["comment"] = "Created with " PROGRAM_NAME;
 295         return ffm;
 296 }
 297
 298
 299 bool
 300 TranscodeFfmpeg::encode (std::string outfile, std::string inf_a, std::string inf_v, TranscodeFfmpeg::FFSettings ffs, TranscodeFfmpeg::FFSettings meta, bool map)
 301 {
 302 #define MAX_FFMPEG_ENCODER_ARGS (100)
 303         char **argp;
 304         int a=0;
 305
 306         argp=(char**) calloc(MAX_FFMPEG_ENCODER_ARGS,sizeof(char*));
 307         argp[a++] = strdup(ffmpeg_exe.c_str());
 308         if (m_avoffset < 0 || m_avoffset > 0) {
 309                 std::ostringstream osstream; osstream << m_avoffset;
 310                 argp[a++] = strdup("-itsoffset");
 311                 argp[a++] = strdup(osstream.str().c_str());
 312         }
 313         argp[a++] = strdup("-i");
 314         argp[a++] = strdup(inf_v.c_str());
 315
 316         argp[a++] = strdup("-i");
 317         argp[a++] = strdup(inf_a.c_str());
 318
 319         for(TranscodeFfmpeg::FFSettings::const_iterator it = ffs.begin(); it != ffs.end(); ++it) {
 320                 argp[a++] = strdup(it->first.c_str());
 321                 argp[a++] = strdup(it->second.c_str());
 322         }
 323         for(TranscodeFfmpeg::FFSettings::const_iterator it = meta.begin(); it != meta.end(); ++it) {
 324                 argp[a++] = strdup("-metadata");
 325                 argp[a++] = SystemExec::format_key_value_parameter (it->first.c_str(), it->second.c_str());
 326         }
 327
 328         if (m_fps > 0) {
 329                 m_lead_in  = rint (m_lead_in * m_fps) / m_fps;
 330                 m_lead_out = rint (m_lead_out * m_fps) / m_fps;
 331         }
 332
 333         if (m_lead_in != 0 && m_lead_out != 0) {
 334                 std::ostringstream osstream;
 335                 argp[a++] = strdup("-vf");
 336                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in;
 337                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 338                 osstream << X_(" [pre]; ");
 339                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out;
 340                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 341                 osstream << X_(" [post]; ");
 342                 osstream << X_("[pre] [in] [post] concat=n=3");
 343                 argp[a++] = strdup(osstream.str().c_str());
 344         } else if (m_lead_in != 0) {
 345                 std::ostringstream osstream;
 346                 argp[a++] = strdup("-vf");
 347                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in;
 348                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 349                 osstream << X_(" [pre]; ");
 350                 osstream << X_("[pre] [in] concat=n=2");
 351                 argp[a++] = strdup(osstream.str().c_str());
 352         } else if (m_lead_out != 0) {
 353                 std::ostringstream osstream;
 354                 argp[a++] = strdup("-vf");
 355                 osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out;
 356                 if (!m_sar.empty()) osstream << X_(":sar=") << m_sar;
 357                 osstream << X_(" [post]; ");
 358                 osstream << X_("[in] [post] concat=n=2");
 359                 argp[a++] = strdup(osstream.str().c_str());
 360         }
 361
 362         if (map) {
 363                 std::ostringstream osstream;
 364                 argp[a++] = strdup("-map");
 365                 osstream << X_("0:") << m_videoidx;
 366                 argp[a++] = strdup(osstream.str().c_str());
 367                 argp[a++] = strdup("-map");
 368                 argp[a++] = strdup("1:0");
 369         }
 370
 371         argp[a++] = strdup("-y");
 372         argp[a++] = strdup(outfile.c_str());
 373         argp[a] = (char *)0;
 374         assert(a<MAX_FFMPEG_ENCODER_ARGS);
 375         /* Note: these are free()d in ~SystemExec */
 376 #if 1 /* DEBUG */
 377         if (debug_enable) { /* tentative debug mode */
 378         printf("EXPORT ENCODE:\n");
 379         for (int i=0; i< a; ++i) {
 380           printf("%s ", argp[i]);
 381         }
 382         printf("\n");
 383         }
 384 #endif
 385
 386         ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
 387         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
 388         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 389         if (ffcmd->start(2)) {
 390                 ffexit();
 391                 return false;
 392         }
 393         return true;
 394 }
 395
 396 bool
 397 TranscodeFfmpeg::extract_audio (std::string outfile, ARDOUR::samplecnt_t /*samplerate*/, unsigned int stream)
 398 {
 399         if (!probeok) return false;
 400   if (stream >= m_audio.size()) return false;
 401
 402         char **argp;
 403         int i = 0;
 404
 405         argp=(char**) calloc(15,sizeof(char*));
 406         argp[i++] = strdup(ffmpeg_exe.c_str());
 407         argp[i++] = strdup("-i");
 408         argp[i++] = strdup(infile.c_str());
 409 #if 0 /* ffmpeg write original samplerate, use a3/SRC to resample */
 410         argp[i++] = strdup("-ar");
 411         argp[i] = (char*) calloc(7,sizeof(char)); snprintf(argp[i++], 7, "%"PRId64, samplerate);
 412 #endif
 413         argp[i++] = strdup("-ac");
 414         argp[i] = (char*) calloc(3,sizeof(char)); snprintf(argp[i++], 3, "%i", m_audio.at(stream).channels);
 415         argp[i++] = strdup("-map");
 416         argp[i] = (char*) calloc(8,sizeof(char)); snprintf(argp[i++], 8, "0:%s", m_audio.at(stream).stream_id.c_str());
 417         argp[i++] = strdup("-vn");
 418         argp[i++] = strdup("-acodec");
 419         argp[i++] = strdup("pcm_f32le");
 420         argp[i++] = strdup("-y");
 421         argp[i++] = strdup(outfile.c_str());
 422         argp[i++] = (char *)0;
 423         /* Note: argp is free()d in ~SystemExec */
 424 #if 1 /* DEBUG */
 425         if (debug_enable) { /* tentative debug mode */
 426         printf("EXTRACT AUDIO:\n");
 427         for (int i=0; i< 14; ++i) {
 428           printf("%s ", argp[i]);
 429         }
 430         printf("\n");
 431         }
 432 #endif
 433
 434         ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
 435         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_a, this, _1 ,_2));
 436         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 437         if (ffcmd->start(2)) {
 438                 ffexit();
 439                 return false;
 440         }
 441         return true;
 442 }
 443
 444
 445 bool
 446 TranscodeFfmpeg::transcode (std::string outfile, const int outw, const int outh, const int kbitps)
 447 {
 448         if (!probeok) return false;
 449
 450         char **argp;
 451         int bitrate = kbitps;
 452         int width = outw;
 453         int height = outh;
 454
 455         if (width < 1 || width > m_width) { width = m_width; } /* don't allow upscaling */
 456         if (height < 1 || height > m_height) { height = floor(width / m_aspect); }
 457
 458         if (bitrate == 0) {
 459                 const double bitperpixel = .7; /* avg quality */
 460                 bitrate = floor(m_fps * width * height * bitperpixel / 10000.0);
 461         } else {
 462                 bitrate = bitrate / 10;
 463         }
 464         if (bitrate < 10)  bitrate = 10;
 465         if (bitrate > 1000) bitrate = 1000;
 466
 467         argp=(char**) calloc(16,sizeof(char*));
 468         argp[0] = strdup(ffmpeg_exe.c_str());
 469         argp[1] = strdup("-i");
 470         argp[2] = strdup(infile.c_str());
 471         argp[3] = strdup("-b:v");
 472         argp[4] = (char*) calloc(7,sizeof(char)); snprintf(argp[4], 7, "%i0k", bitrate);
 473         argp[5] = strdup("-s");
 474         argp[6] = (char*) calloc(10,sizeof(char)); snprintf(argp[6], 10, "%ix%i", width, height);
 475         argp[7] = strdup("-y");
 476         argp[8] = strdup("-vcodec");
 477         argp[9] = strdup("mjpeg");
 478         argp[10] = strdup("-an");
 479         argp[11] = strdup("-intra");
 480         argp[12] = strdup("-g");
 481         argp[13] = strdup("1");
 482         argp[14] = strdup(outfile.c_str());
 483         argp[15] = (char *)0;
 484         /* Note: these are free()d in ~SystemExec */
 485 #if 1 /* DEBUG */
 486         if (debug_enable) { /* tentative debug mode */
 487         printf("TRANSCODE VIDEO:\n");
 488         for (int i=0; i< 15; ++i) {
 489           printf("%s ", argp[i]);
 490         }
 491         printf("\n");
 492         }
 493 #endif
 494         ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
 495         ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
 496         ffcmd->Terminated.connect (*this, invalidator (*this), boost::bind (&TranscodeFfmpeg::ffexit, this), gui_context());
 497         if (ffcmd->start(2)) {
 498                 ffexit();
 499                 return false;
 500         }
 501         return true;
 502 }
 503
 504 void
 505 TranscodeFfmpeg::cancel ()
 506 {
 507         if (!ffcmd || !ffcmd->is_running()) { return;}
 508         ffcmd->write_to_stdin("q");
 509 #ifdef PLATFORM_WINDOWS
 510         Sleep(1000);
 511 #else
 512         sleep (1);
 513 #endif
 514         if (ffcmd) {
 515           ffcmd->terminate();
 516         }
 517 }
 518
 519 void
 520 TranscodeFfmpeg::ffexit ()
 521 {
 522         delete ffcmd;
 523         ffcmd=0;
 524         Finished(); /* EMIT SIGNAL */
 525 }
 526
 527 void
 528 TranscodeFfmpeg::ffprobeparse (std::string d, size_t /* s */)
 529 {
 530         ffoutput+=d;
 531 }
 532
 533 void
 534 TranscodeFfmpeg::ffmpegparse_a (std::string d, size_t /* s */)
 535 {
 536         const char *t;
 537         int h,m,s; char f[7];
 538         ARDOUR::samplecnt_t p = -1;
 539
 540         if (!(t=strstr(d.c_str(), "time="))) { return; }
 541
 542         if (sscanf(t+5, "%d:%d:%d.%s",&h,&m,&s,f) == 4) {
 543                 p = (ARDOUR::samplecnt_t) floor( 100.0 * (
 544                       h * 3600.0
 545                     + m * 60.0
 546                     + s * 1.0
 547                     + atoi(f) / pow((double)10, (int)strlen(f))
 548                 ));
 549                 p = p * m_fps / 100.0;
 550                 if (p > m_duration ) { p = m_duration; }
 551                 Progress(p, m_duration); /* EMIT SIGNAL */
 552         } else {
 553                 Progress(0, 0); /* EMIT SIGNAL */
 554         }
 555 }
 556
 557 void
 558 TranscodeFfmpeg::ffmpegparse_v (std::string d, size_t /* s */)
 559 {
 560         if (strstr(d.c_str(), "ERROR") || strstr(d.c_str(), "Error") || strstr(d.c_str(), "error")) {
 561                 warning << "ffmpeg-error: " << d << endmsg;
 562         }
 563         if (strncmp(d.c_str(), "frame=",6)) {
 564 #if 1 /* DEBUG */
 565                 if (debug_enable) {
 566                         d.erase(d.find_last_not_of(" \t\r\n") + 1);
 567                   printf("ffmpeg: '%s'\n", d.c_str());
 568                 }
 569 #endif
 570                 return;
 571         }
 572         ARDOUR::samplecnt_t f = atol(d.substr(6));
 573         if (f == 0) {
 574                 Progress(0, 0); /* EMIT SIGNAL */
 575         } else {
 576                 Progress(f, m_duration); /* EMIT SIGNAL */
 577         }
 578 }