src/lib/player_video.cc

   1 /*
   2     Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <dcp/raw_convert.h>
  21 #include "player_video.h"
  22 #include "image.h"
  23 #include "image_proxy.h"
  24 #include "scaler.h"
  25
  26 using std::string;
  27 using std::cout;
  28 using boost::shared_ptr;
  29 using dcp::raw_convert;
  30
  31 PlayerVideo::PlayerVideo (
  32         shared_ptr<const ImageProxy> in,
  33         DCPTime time,
  34         Crop crop,
  35         dcp::Size inter_size,
  36         dcp::Size out_size,
  37         Scaler const * scaler,
  38         Eyes eyes,
  39         Part part,
  40         ColourConversion colour_conversion
  41         )
  42         : _in (in)
  43         , _time (time)
  44         , _crop (crop)
  45         , _inter_size (inter_size)
  46         , _out_size (out_size)
  47         , _scaler (scaler)
  48         , _eyes (eyes)
  49         , _part (part)
  50         , _colour_conversion (colour_conversion)
  51 {
  52
  53 }
  54
  55 PlayerVideo::PlayerVideo (shared_ptr<cxml::Node> node, shared_ptr<Socket> socket, shared_ptr<Log> log)
  56 {
  57         _time = DCPTime (node->number_child<DCPTime::Type> ("Time"));
  58         _crop = Crop (node);
  59
  60         _inter_size = dcp::Size (node->number_child<int> ("InterWidth"), node->number_child<int> ("InterHeight"));
  61         _out_size = dcp::Size (node->number_child<int> ("OutWidth"), node->number_child<int> ("OutHeight"));
  62         _scaler = Scaler::from_id (node->string_child ("Scaler"));
  63         _eyes = (Eyes) node->number_child<int> ("Eyes");
  64         _part = (Part) node->number_child<int> ("Part");
  65         _colour_conversion = ColourConversion (node);
  66
  67         _in = image_proxy_factory (node->node_child ("In"), socket, log);
  68
  69         if (node->optional_number_child<int> ("SubtitleX")) {
  70
  71                 _subtitle.position = Position<int> (node->number_child<int> ("SubtitleX"), node->number_child<int> ("SubtitleY"));
  72
  73                 _subtitle.image.reset (
  74                         new Image (PIX_FMT_RGBA, dcp::Size (node->number_child<int> ("SubtitleWidth"), node->number_child<int> ("SubtitleHeight")), true)
  75                         );
  76
  77                 _subtitle.image->read_from_socket (socket);
  78         }
  79 }
  80
  81 void
  82 PlayerVideo::set_subtitle (PositionImage image)
  83 {
  84         _subtitle = image;
  85 }
  86
  87 shared_ptr<Image>
  88 PlayerVideo::image () const
  89 {
  90         shared_ptr<Image> im = _in->image ();
  91
  92         Crop total_crop = _crop;
  93         switch (_part) {
  94         case PART_LEFT_HALF:
  95                 total_crop.right += im->size().width / 2;
  96                 break;
  97         case PART_RIGHT_HALF:
  98                 total_crop.left += im->size().width / 2;
  99                 break;
 100         case PART_TOP_HALF:
 101                 total_crop.bottom += im->size().height / 2;
 102                 break;
 103         case PART_BOTTOM_HALF:
 104                 total_crop.top += im->size().height / 2;
 105                 break;
 106         default:
 107                 break;
 108         }
 109
 110         shared_ptr<Image> out = im->crop_scale_window (total_crop, _inter_size, _out_size, _scaler, PIX_FMT_RGB24, true);
 111
 112         Position<int> const container_offset ((_out_size.width - _inter_size.width) / 2, (_out_size.height - _inter_size.width) / 2);
 113
 114         if (_subtitle.image) {
 115                 out->alpha_blend (_subtitle.image, _subtitle.position);
 116         }
 117
 118         return out;
 119 }
 120
 121 void
 122 PlayerVideo::add_metadata (xmlpp::Node* node) const
 123 {
 124         node->add_child("Time")->add_child_text (raw_convert<string> (_time.get ()));
 125         _crop.as_xml (node);
 126         _in->add_metadata (node->add_child ("In"));
 127         node->add_child("InterWidth")->add_child_text (raw_convert<string> (_inter_size.width));
 128         node->add_child("InterHeight")->add_child_text (raw_convert<string> (_inter_size.height));
 129         node->add_child("OutWidth")->add_child_text (raw_convert<string> (_out_size.width));
 130         node->add_child("OutHeight")->add_child_text (raw_convert<string> (_out_size.height));
 131         node->add_child("Scaler")->add_child_text (_scaler->id ());
 132         node->add_child("Eyes")->add_child_text (raw_convert<string> (_eyes));
 133         node->add_child("Part")->add_child_text (raw_convert<string> (_part));
 134         _colour_conversion.as_xml (node);
 135         if (_subtitle.image) {
 136                 node->add_child ("SubtitleWidth")->add_child_text (raw_convert<string> (_subtitle.image->size().width));
 137                 node->add_child ("SubtitleHeight")->add_child_text (raw_convert<string> (_subtitle.image->size().height));
 138                 node->add_child ("SubtitleX")->add_child_text (raw_convert<string> (_subtitle.position.x));
 139                 node->add_child ("SubtitleY")->add_child_text (raw_convert<string> (_subtitle.position.y));
 140         }
 141 }
 142
 143 void
 144 PlayerVideo::send_binary (shared_ptr<Socket> socket) const
 145 {
 146         _in->send_binary (socket);
 147         if (_subtitle.image) {
 148                 _subtitle.image->write_to_socket (socket);
 149         }
 150 }