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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
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 <sstream>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include <poll.h>
#include <boost/thread.hpp>
#include <boost/algorithm/string.hpp>
#include "player.h"
#include "filter.h"
#include "screen.h"
#include "exceptions.h"
using namespace std;
using namespace boost;
Player::Player (shared_ptr<const FilmState> fs, shared_ptr<const Screen> screen, Split split)
: _stdout_reader_should_run (true)
, _position (0)
, _paused (false)
{
assert (fs->format);
if (pipe (_mplayer_stdin) < 0) {
throw PlayError ("could not create pipe");
}
if (pipe (_mplayer_stdout) < 0) {
throw PlayError ("could not create pipe");
}
if (pipe (_mplayer_stderr) < 0) {
throw PlayError ("could not create pipe");
}
int const p = fork ();
if (p < 0) {
throw PlayError ("could not fork for mplayer");
} else if (p == 0) {
close (_mplayer_stdin[1]);
dup2 (_mplayer_stdin[0], STDIN_FILENO);
close (_mplayer_stdout[0]);
dup2 (_mplayer_stdout[1], STDOUT_FILENO);
close (_mplayer_stderr[0]);
dup2 (_mplayer_stderr[1], STDERR_FILENO);
char* p[] = { strdup ("TERM=xterm"), strdup ("DISPLAY=:0"), 0 };
environ = p;
stringstream s;
s << "/usr/local/bin/mplayer";
s << " -vo x11 -noaspect -noautosub -nosub -vo x11 -noborder -slave -quiet -input nodefault-bindings:conf=/dev/null";
s << " -sws " << fs->scaler->mplayer_id ();
stringstream vf;
Position position = screen->position (fs->format);
Size screen_size = screen->size (fs->format);
Size const cropped_size = fs->cropped_size (fs->size);
switch (split) {
case SPLIT_NONE:
vf << crop_string (Position (fs->left_crop, fs->top_crop), cropped_size);
s << " -geometry " << position.x << ":" << position.y;
break;
case SPLIT_LEFT:
{
Size split_size = cropped_size;
split_size.width /= 2;
vf << crop_string (Position (fs->left_crop, fs->top_crop), split_size);
screen_size.width /= 2;
s << " -geometry " << position.x << ":" << position.y;
break;
}
case SPLIT_RIGHT:
{
Size split_size = cropped_size;
split_size.width /= 2;
vf << crop_string (Position (fs->left_crop + split_size.width, fs->top_crop), split_size);
screen_size.width /= 2;
s << " -geometry " << (position.x + screen_size.width) << ":" << position.y;
break;
}
}
vf << ",scale=" << screen_size.width << ":" << screen_size.height;
pair<string, string> filters = Filter::ffmpeg_strings (fs->filters);
if (!filters.first.empty()) {
vf << "," << filters.first;
}
if (!filters.second.empty ()) {
vf << ",pp=" << filters.second;
}
s << " -vf " << vf.str();
s << " \"" << fs->content_path() << "\" ";
string cmd (s.str ());
vector<string> b = split_at_spaces_considering_quotes (cmd);
char** cl = new char*[b.size() + 1];
for (vector<string>::size_type i = 0; i < b.size(); ++i) {
cl[i] = strdup (b[i].c_str ());
}
cl[b.size()] = 0;
execv (cl[0], cl);
stringstream e;
e << "exec of mplayer failed " << strerror (errno);
throw PlayError (e.str ());
} else {
_mplayer_pid = p;
command ("pause");
_stdout_reader = new boost::thread (boost::bind (&Player::stdout_reader, this));
}
}
Player::~Player ()
{
_stdout_reader_should_run = false;
_stdout_reader->join ();
delete _stdout_reader;
close (_mplayer_stdin[0]);
close (_mplayer_stdout[1]);
kill (_mplayer_pid, SIGTERM);
}
void
Player::command (string c)
{
char buf[64];
snprintf (buf, sizeof (buf), "%s\n", c.c_str ());
write (_mplayer_stdin[1], buf, strlen (buf));
}
void
Player::stdout_reader ()
{
while (_stdout_reader_should_run) {
char buf[1024];
int r = read (_mplayer_stdout[0], buf, sizeof (buf));
if (r > 0) {
stringstream s (buf);
while (s.good ()) {
string line;
getline (s, line);
vector<string> b;
split (b, line, is_any_of ("="));
if (b.size() < 2) {
continue;
}
if (b[0] == "ANS_time_pos") {
set_position (atof (b[1].c_str ()));
} else if (b[0] == "ANS_pause") {
set_paused (b[1] == "yes");
}
}
}
usleep (5e5);
snprintf (buf, sizeof (buf), "pausing_keep_force get_property time_pos\npausing_keep_force get_property pause\n");
write (_mplayer_stdin[1], buf, strlen (buf));
}
}
void
Player::set_position (float p)
{
/* XXX: could be an atomic */
boost::mutex::scoped_lock lm (_state_mutex);
_position = p;
}
void
Player::set_paused (bool p)
{
/* XXX: could be an atomic */
boost::mutex::scoped_lock lm (_state_mutex);
_paused = p;
}
float
Player::position () const
{
boost::mutex::scoped_lock lm (_state_mutex);
return _position;
}
bool
Player::paused () const
{
boost::mutex::scoped_lock lm (_state_mutex);
return _paused;
}
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