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ardour/gtk2_ardour/transcode_ffmpeg.cc

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/*
Copyright (C) 2010-2013 Paul Davis
Author: Robin Gareus <robin@gareus.org>
This program 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 program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <string.h>
#include <sstream>
#include <sys/types.h>
#include "pbd/error.h"
#include "pbd/convert.h"
#include "pbd/file_utils.h"
#include "gui_thread.h"
#include "transcode_ffmpeg.h"
#include "utils_videotl.h"
#include "i18n.h"
using namespace PBD;
using namespace VideoUtils;
TranscodeFfmpeg::TranscodeFfmpeg (std::string f)
: infile(f)
{
probeok = false;
ffexecok = false;
ffmpeg_exe = "";
ffprobe_exe = "";
m_duration = 0;
m_avoffset = m_lead_in = m_lead_out = 0;
m_width = m_height = 0;
m_aspect = m_fps = 0;
#if 1 /* tentative debug mode */
debug_enable = false;
#endif
std::string ff_file_path;
if (find_file_in_search_path (Searchpath(Glib::getenv("PATH")), X_("ffmpeg_harvid"), ff_file_path)) { ffmpeg_exe = ff_file_path; }
else if (Glib::file_test(X_("C:\\Program Files\\harvid\\ffmpeg.exe"), Glib::FILE_TEST_EXISTS)) {
ffmpeg_exe = X_("C:\\Program Files\\ffmpeg\\ffmpeg.exe");
}
else if (Glib::file_test(X_("C:\\Program Files\\ffmpeg\\ffmpeg.exe"), Glib::FILE_TEST_EXISTS)) {
ffmpeg_exe = X_("C:\\Program Files\\ffmpeg\\ffmpeg.exe");
}
if (find_file_in_search_path (Searchpath(Glib::getenv("PATH")), X_("ffprobe_harvid"), ff_file_path)) { ffprobe_exe = ff_file_path; }
else if (Glib::file_test(X_("C:\\Program Files\\harvid\\ffprobe.exe"), Glib::FILE_TEST_EXISTS)) {
ffprobe_exe = X_("C:\\Program Files\\ffmpeg\\ffprobe.exe");
}
else if (Glib::file_test(X_("C:\\Program Files\\ffmpeg\\ffprobe.exe"), Glib::FILE_TEST_EXISTS)) {
ffprobe_exe = X_("C:\\Program Files\\ffmpeg\\ffprobe.exe");
}
if (ffmpeg_exe.empty() || ffprobe_exe.empty()) {
warning << string_compose(
_(
"No ffprobe or ffmpeg executables could be found on this system.\n"
"Video import and export is not possible until you install those tools.\n"
"%1 requires ffmpeg and ffprobe from ffmpeg.org - version 1.1 or newer.\n"
"\n"
"The tools are included with the %1 releases from ardour.org "
"and also available with the video-server at http://x42.github.com/harvid/\n"
"\n"
"Important: the files need to be installed in $PATH and named ffmpeg_harvid and ffprobe_harvid.\n"
"If you already have a suitable ffmpeg installation on your system, we recommend creating "
"symbolic links from ffmpeg to ffmpeg_harvid and from ffprobe to ffprobe_harvid.\n"
), PROGRAM_NAME) << endmsg;
return;
}
ffexecok = true;
if (infile.empty() || !probe()) {
return;
}
probeok = true;
}
TranscodeFfmpeg::~TranscodeFfmpeg ()
{
;
}
bool
TranscodeFfmpeg::probe ()
{
ffoutput = "";
char **argp;
argp=(char**) calloc(7,sizeof(char*));
argp[0] = strdup(ffprobe_exe.c_str());
argp[1] = strdup("-print_format");
argp[2] = strdup("csv=nk=0");
argp[3] = strdup("-show_format");
argp[4] = strdup("-show_streams");
argp[5] = strdup(infile.c_str());
argp[6] = 0;
ffcmd = new ARDOUR::SystemExec(ffprobe_exe, argp);
ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffprobeparse, this, _1 ,_2));
ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
if (ffcmd->start(1)) {
ffexit();
return false;
}
/* wait for ffprobe process to exit */
ffcmd->wait();
/* wait for interposer thread to copy all data.
* SystemExec::Terminated is emitted and ffcmd set to NULL */
int timeout = 300; // 1.5 sec
while (ffcmd && --timeout > 0) {
Glib::usleep(5000);
}
if (timeout == 0 || ffoutput.empty()) {
return false;
}
/* parse */
std::vector<std::vector<std::string> > lines;
ParseCSV(ffoutput, lines);
double timebase = 0;
m_width = m_height = 0;
m_fps = m_aspect = 0;
m_duration = 0;
m_codec.clear();
m_audio.clear();
#define PARSE_FRACTIONAL_FPS(VAR) \
{ \
std::string::size_type pos; \
VAR = atof(value); \
pos = value.find_first_of('/'); \
if (pos != std::string::npos) { \
VAR = atof(value.substr(0, pos)) / atof(value.substr(pos+1)); \
} \
}
for (std::vector<std::vector<std::string> >::iterator i = lines.begin(); i != lines.end(); ++i) {
if (i->at(0) == X_("format")) {
/* format,filename,#streams,format-name,format-long-name,start-time,duration,size,bitrate */
} else
if (i->at(0) == X_("stream")) {
if (i->at(5) == X_("codec_type=video") && m_width == 0) {
for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
const size_t kvsep = kv->find('=');
if(kvsep == std::string::npos) continue;
std::string key = kv->substr(0, kvsep);
std::string value = kv->substr(kvsep + 1);
if (key == X_("index")) {
m_videoidx = atoi(value);
} else if (key == X_("width")) {
m_width = atoi(value);
} else if (key == X_("height")) {
m_height = atoi(value);
} else if (key == X_("codec_name")) {
if (!m_codec.empty()) m_codec += " ";
m_codec += value;
} else if (key == X_("codec_long_name")) {
if (!m_codec.empty()) m_codec += " ";
m_codec += "[" + value + "]";
} else if (key == X_("codec_tag_string")) {
if (!m_codec.empty()) m_codec += " ";
m_codec += "(" + value + ")";
} else if (key == X_("r_frame_rate")) {
PARSE_FRACTIONAL_FPS(m_fps)
} else if (key == X_("avg_frame_rate") && m_fps == 0) {
PARSE_FRACTIONAL_FPS(m_fps)
} else if (key == X_("time_base")) {
PARSE_FRACTIONAL_FPS(timebase)
} else if (key == X_("timecode") && m_duration == 0) {
int h,m,s; char f[7];
if (sscanf(i->at(16).c_str(), "%d:%d:%d:%s",&h,&m,&s,f) == 4) {
m_duration = (ARDOUR::framecnt_t) floor(m_fps * (
h * 3600.0
+ m * 60.0
+ s * 1.0
+ atoi(f) / pow((double)10, (int)strlen(f))
));
}
} else if (key == X_("duration_ts") && m_fps == 0 && timebase !=0 ) {
m_duration = atof(value) * m_fps * timebase;
} else if (key == X_("duration") && m_fps != 0 && m_duration == 0) {
m_duration = atof(value) * m_fps;
} else if (key == X_("display_aspect_ratio")) {
std::string::size_type pos;
pos = value.find_first_of(':');
if (pos != std::string::npos && atof(value.substr(pos+1)) != 0) {
m_aspect = atof(value.substr(0, pos)) / atof(value.substr(pos+1));
}
}
}
if (m_aspect == 0) {
m_aspect = (double)m_width / (double)m_height;
}
} else if (i->at(5) == X_("codec_type=audio")) { /* new ffprobe */
FFAudioStream as;
for (std::vector<std::string>::iterator kv = i->begin(); kv != i->end(); ++kv) {
const size_t kvsep = kv->find('=');
if(kvsep == std::string::npos) continue;
std::string key = kv->substr(0, kvsep);
std::string value = kv->substr(kvsep + 1);
if (key == X_("channels")) {
as.channels = atoi(value);
} else if (key == X_("index")) {
as.stream_id = value;
} else if (key == X_("codec_long_name")) {
if (!as.name.empty()) as.name += " ";
as.name += value;
} else if (key == X_("codec_name")) {
if (!as.name.empty()) as.name += " ";
as.name += value;
} else if (key == X_("sample_fmt")) {
if (!as.name.empty()) as.name += " ";
as.name += "FMT:" + value;
} else if (key == X_("sample_rate")) {
if (!as.name.empty()) as.name += " ";
as.name += "SR:" + value;
}
}
m_audio.push_back(as);
}
}
}
/* end parse */
#if 0 /* DEBUG */
printf("FPS: %f\n", m_fps);
printf("Duration: %lu frames\n",(unsigned long)m_duration);
printf("W/H: %ix%i\n",m_width, m_height);
printf("aspect: %f\n",m_aspect);
printf("codec: %s\n",m_codec.c_str());
if (m_audio.size() > 0) {
for (AudioStreams::iterator it = m_audio.begin(); it < m_audio.end(); ++it) {
printf("audio: %s - %i channels\n",(*it).stream_id.c_str(), (*it).channels);
}
} else {
printf("audio: no audio streams in file.\n");
}
#endif
return true;
}
TranscodeFfmpeg::FFSettings
TranscodeFfmpeg::default_encoder_settings ()
{
TranscodeFfmpeg::FFSettings ffs;
ffs.clear();
ffs["-vcodec"] = "mpeg4";
ffs["-acodec"] = "ac3";
ffs["-b:v"] = "5000k";
ffs["-b:a"] = "160k";
return ffs;
}
TranscodeFfmpeg::FFSettings
TranscodeFfmpeg::default_meta_data ()
{
TranscodeFfmpeg::FFSettings ffm;
ffm.clear();
ffm["comment"] = "Created with ardour";
return ffm;
}
char *
TranscodeFfmpeg::format_metadata (std::string key, std::string value)
{
size_t start_pos = 0;
std::string v1 = value;
while((start_pos = v1.find_first_not_of(
"abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789(),.\"'",
start_pos)) != std::string::npos)
{
v1.replace(start_pos, 1, "_");
start_pos += 1;
}
start_pos = 0;
while((start_pos = v1.find("\"", start_pos)) != std::string::npos) {
v1.replace(start_pos, 1, "\\\"");
start_pos += 2;
}
size_t len = key.length() + v1.length() + 4;
char *mds = (char*) calloc(len, sizeof(char));
snprintf(mds, len, "%s=\"%s\"", key.c_str(), v1.c_str());
return mds;
}
bool
TranscodeFfmpeg::encode (std::string outfile, std::string inf_a, std::string inf_v, TranscodeFfmpeg::FFSettings ffs, TranscodeFfmpeg::FFSettings meta, bool map)
{
#define MAX_FFMPEG_ENCODER_ARGS (100)
char **argp;
int a=0;
argp=(char**) calloc(MAX_FFMPEG_ENCODER_ARGS,sizeof(char*));
argp[a++] = strdup(ffmpeg_exe.c_str());
if (m_avoffset < 0 || m_avoffset > 0) {
std::ostringstream osstream; osstream << m_avoffset;
argp[a++] = strdup("-itsoffset");
argp[a++] = strdup(osstream.str().c_str());
}
argp[a++] = strdup("-i");
argp[a++] = strdup(inf_v.c_str());
argp[a++] = strdup("-i");
argp[a++] = strdup(inf_a.c_str());
for(TranscodeFfmpeg::FFSettings::const_iterator it = ffs.begin(); it != ffs.end(); ++it) {
argp[a++] = strdup(it->first.c_str());
argp[a++] = strdup(it->second.c_str());
}
for(TranscodeFfmpeg::FFSettings::const_iterator it = meta.begin(); it != meta.end(); ++it) {
argp[a++] = strdup("-metadata");
argp[a++] = format_metadata(it->first.c_str(), it->second.c_str());
}
if (m_lead_in != 0 && m_lead_out != 0) {
std::ostringstream osstream;
argp[a++] = strdup("-vf");
osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in << X_(" [pre]; ");
osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out << X_(" [post]; ");
osstream << X_("[pre] [in] [post] concat=n=3");
argp[a++] = strdup(osstream.str().c_str());
} else if (m_lead_in != 0) {
std::ostringstream osstream;
argp[a++] = strdup("-vf");
osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_in << X_(" [pre]; ");
osstream << X_("[pre] [in] concat=n=2");
argp[a++] = strdup(osstream.str().c_str());
} else if (m_lead_out != 0) {
std::ostringstream osstream;
argp[a++] = strdup("-vf");
osstream << X_("color=c=black:s=") << m_width << X_("x") << m_height << X_(":d=") << m_lead_out << X_(" [post]; ");
osstream << X_("[in] [post] concat=n=2");
argp[a++] = strdup(osstream.str().c_str());
}
if (map) {
std::ostringstream osstream;
argp[a++] = strdup("-map");
osstream << X_("0:") << m_videoidx;
argp[a++] = strdup(osstream.str().c_str());
argp[a++] = strdup("-map");
argp[a++] = strdup("1:0");
}
argp[a++] = strdup("-y");
argp[a++] = strdup(outfile.c_str());
argp[a] = (char *)0;
assert(a<MAX_FFMPEG_ENCODER_ARGS);
/* Note: these are free()d in ~SystemExec */
#if 1 /* DEBUG */
if (debug_enable) { /* tentative debug mode */
printf("EXPORT ENCODE:\n");
for (int i=0; i< a; ++i) {
printf("%s ", argp[i]);
}
printf("\n");
}
#endif
ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
if (ffcmd->start(2)) {
ffexit();
return false;
}
return true;
}
bool
TranscodeFfmpeg::extract_audio (std::string outfile, ARDOUR::framecnt_t /*samplerate*/, unsigned int stream)
{
if (!probeok) return false;
if (stream >= m_audio.size()) return false;
char **argp;
int i = 0;
argp=(char**) calloc(15,sizeof(char*));
argp[i++] = strdup(ffmpeg_exe.c_str());
argp[i++] = strdup("-i");
argp[i++] = strdup(infile.c_str());
#if 0 /* ffmpeg write original samplerate, use a3/SRC to resample */
argp[i++] = strdup("-ar");
argp[i] = (char*) calloc(7,sizeof(char)); snprintf(argp[i++], 7, "%"PRId64, samplerate);
#endif
argp[i++] = strdup("-ac");
argp[i] = (char*) calloc(3,sizeof(char)); snprintf(argp[i++], 3, "%i", m_audio.at(stream).channels);
argp[i++] = strdup("-map");
argp[i] = (char*) calloc(8,sizeof(char)); snprintf(argp[i++], 8, "0:%s", m_audio.at(stream).stream_id.c_str());
argp[i++] = strdup("-vn");
argp[i++] = strdup("-acodec");
argp[i++] = strdup("pcm_f32le");
argp[i++] = strdup("-y");
argp[i++] = strdup(outfile.c_str());
argp[i++] = (char *)0;
/* Note: argp is free()d in ~SystemExec */
#if 1 /* DEBUG */
if (debug_enable) { /* tentative debug mode */
printf("EXTRACT AUDIO:\n");
for (int i=0; i< 14; ++i) {
printf("%s ", argp[i]);
}
printf("\n");
}
#endif
ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_a, this, _1 ,_2));
ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
if (ffcmd->start(2)) {
ffexit();
return false;
}
return true;
}
bool
TranscodeFfmpeg::transcode (std::string outfile, const int outw, const int outh, const int kbitps)
{
if (!probeok) return false;
char **argp;
int bitrate = kbitps;
int width = outw;
int height = outh;
if (width < 1 || width > m_width) { width = m_width; } /* don't allow upscaling */
if (height < 1 || height > m_height) { height = floor(width / m_aspect); }
if (bitrate == 0) {
const double bitperpixel = .7; /* avg quality */
bitrate = floor(m_fps * width * height * bitperpixel / 10000.0);
} else {
bitrate = bitrate / 10;
}
if (bitrate < 10) bitrate = 10;
if (bitrate > 1000) bitrate = 1000;
argp=(char**) calloc(16,sizeof(char*));
argp[0] = strdup(ffmpeg_exe.c_str());
argp[1] = strdup("-i");
argp[2] = strdup(infile.c_str());
argp[3] = strdup("-b:v");
argp[4] = (char*) calloc(7,sizeof(char)); snprintf(argp[4], 7, "%i0k", bitrate);
argp[5] = strdup("-s");
argp[6] = (char*) calloc(10,sizeof(char)); snprintf(argp[6], 10, "%ix%i", width, height);
argp[7] = strdup("-y");
argp[8] = strdup("-vcodec");
argp[9] = strdup("mjpeg");
argp[10] = strdup("-an");
argp[11] = strdup("-intra");
argp[12] = strdup("-g");
argp[13] = strdup("1");
argp[14] = strdup(outfile.c_str());
argp[15] = (char *)0;
/* Note: these are free()d in ~SystemExec */
#if 1 /* DEBUG */
if (debug_enable) { /* tentative debug mode */
printf("TRANSCODE VIDEO:\n");
for (int i=0; i< 15; ++i) {
printf("%s ", argp[i]);
}
printf("\n");
}
#endif
ffcmd = new ARDOUR::SystemExec(ffmpeg_exe, argp);
ffcmd->ReadStdout.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffmpegparse_v, this, _1 ,_2));
ffcmd->Terminated.connect_same_thread (*this, boost::bind (&TranscodeFfmpeg::ffexit, this));
if (ffcmd->start(2)) {
ffexit();
return false;
}
return true;
}
void
TranscodeFfmpeg::cancel ()
{
if (!ffcmd || !ffcmd->is_running()) { return;}
ffcmd->write_to_stdin("q");
#ifdef PLATFORM_WINDOWS
Sleep(1000);
#else
sleep (1);
#endif
if (ffcmd) {
ffcmd->terminate();
}
}
void
TranscodeFfmpeg::ffexit ()
{
delete ffcmd;
ffcmd=0;
Finished(); /* EMIT SIGNAL */
}
void
TranscodeFfmpeg::ffprobeparse (std::string d, size_t /* s */)
{
ffoutput+=d;
}
void
TranscodeFfmpeg::ffmpegparse_a (std::string d, size_t /* s */)
{
const char *t;
int h,m,s; char f[7];
ARDOUR::framecnt_t p = -1;
if (!(t=strstr(d.c_str(), "time="))) { return; }
if (sscanf(t+5, "%d:%d:%d.%s",&h,&m,&s,f) == 4) {
p = (ARDOUR::framecnt_t) floor( 100.0 * (
h * 3600.0
+ m * 60.0
+ s * 1.0
+ atoi(f) / pow((double)10, (int)strlen(f))
));
p = p * m_fps / 100.0;
if (p > m_duration ) { p = m_duration; }
Progress(p, m_duration); /* EMIT SIGNAL */
} else {
Progress(0, 0); /* EMIT SIGNAL */
}
}
void
TranscodeFfmpeg::ffmpegparse_v (std::string d, size_t /* s */)
{
if (strstr(d.c_str(), "ERROR") || strstr(d.c_str(), "Error") || strstr(d.c_str(), "error")) {
warning << "ffmpeg-error: " << d << endmsg;
}
if (strncmp(d.c_str(), "frame=",6)) {
#if 1 /* DEBUG */
if (debug_enable) {
d.erase(d.find_last_not_of(" \t\r\n") + 1);
printf("ffmpeg: '%s'\n", d.c_str());
}
#endif
Progress(0, 0); /* EMIT SIGNAL */
return;
}
ARDOUR::framecnt_t f = atol(d.substr(6));
if (f == 0) {
Progress(0, 0); /* EMIT SIGNAL */
} else {
Progress(f, m_duration); /* EMIT SIGNAL */
}
}
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