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 "j2k_image_proxy.h"
  25 #include "scaler.h"
  26
  27 using std::string;
  28 using std::cout;
  29 using dcp::raw_convert;
  30 using boost::shared_ptr;
  31 using boost::dynamic_pointer_cast;
  32
  33 PlayerVideo::PlayerVideo (
  34         shared_ptr<const ImageProxy> in,
  35         DCPTime time,
  36         Crop crop,
  37         dcp::Size inter_size,
  38         dcp::Size out_size,
  39         Scaler const * scaler,
  40         Eyes eyes,
  41         Part part,
  42         ColourConversion colour_conversion
  43         )
  44         : _in (in)
  45         , _time (time)
  46         , _crop (crop)
  47         , _inter_size (inter_size)
  48         , _out_size (out_size)
  49         , _scaler (scaler)
  50         , _eyes (eyes)
  51         , _part (part)
  52         , _colour_conversion (colour_conversion)
  53 {
  54
  55 }
  56
  57 PlayerVideo::PlayerVideo (shared_ptr<cxml::Node> node, shared_ptr<Socket> socket, shared_ptr<Log> log)
  58 {
  59         _time = DCPTime (node->number_child<DCPTime::Type> ("Time"));
  60         _crop = Crop (node);
  61
  62         _inter_size = dcp::Size (node->number_child<int> ("InterWidth"), node->number_child<int> ("InterHeight"));
  63         _out_size = dcp::Size (node->number_child<int> ("OutWidth"), node->number_child<int> ("OutHeight"));
  64         _scaler = Scaler::from_id (node->string_child ("Scaler"));
  65         _eyes = (Eyes) node->number_child<int> ("Eyes");
  66         _part = (Part) node->number_child<int> ("Part");
  67         _colour_conversion = ColourConversion (node);
  68
  69         _in = image_proxy_factory (node->node_child ("In"), socket, log);
  70
  71         if (node->optional_number_child<int> ("SubtitleX")) {
  72
  73                 _subtitle.position = Position<int> (node->number_child<int> ("SubtitleX"), node->number_child<int> ("SubtitleY"));
  74
  75                 _subtitle.image.reset (
  76                         new Image (PIX_FMT_RGBA, dcp::Size (node->number_child<int> ("SubtitleWidth"), node->number_child<int> ("SubtitleHeight")), true)
  77                         );
  78
  79                 _subtitle.image->read_from_socket (socket);
  80         }
  81 }
  82
  83 void
  84 PlayerVideo::set_subtitle (PositionImage image)
  85 {
  86         _subtitle = image;
  87 }
  88
  89 shared_ptr<Image>
  90 PlayerVideo::image (bool burn_subtitle) const
  91 {
  92         shared_ptr<Image> im = _in->image ();
  93
  94         Crop total_crop = _crop;
  95         switch (_part) {
  96         case PART_LEFT_HALF:
  97                 total_crop.right += im->size().width / 2;
  98                 break;
  99         case PART_RIGHT_HALF:
 100                 total_crop.left += im->size().width / 2;
 101                 break;
 102         case PART_TOP_HALF:
 103                 total_crop.bottom += im->size().height / 2;
 104                 break;
 105         case PART_BOTTOM_HALF:
 106                 total_crop.top += im->size().height / 2;
 107                 break;
 108         default:
 109                 break;
 110         }
 111
 112         shared_ptr<Image> out = im->crop_scale_window (total_crop, _inter_size, _out_size, _scaler, PIX_FMT_RGB24, true);
 113
 114         Position<int> const container_offset ((_out_size.width - _inter_size.width) / 2, (_out_size.height - _inter_size.width) / 2);
 115
 116         if (burn_subtitle && _subtitle.image) {
 117                 out->alpha_blend (_subtitle.image, _subtitle.position);
 118         }
 119
 120         return out;
 121 }
 122
 123 void
 124 PlayerVideo::add_metadata (xmlpp::Node* node, bool send_subtitles) const
 125 {
 126         node->add_child("Time")->add_child_text (raw_convert<string> (_time.get ()));
 127         _crop.as_xml (node);
 128         _in->add_metadata (node->add_child ("In"));
 129         node->add_child("InterWidth")->add_child_text (raw_convert<string> (_inter_size.width));
 130         node->add_child("InterHeight")->add_child_text (raw_convert<string> (_inter_size.height));
 131         node->add_child("OutWidth")->add_child_text (raw_convert<string> (_out_size.width));
 132         node->add_child("OutHeight")->add_child_text (raw_convert<string> (_out_size.height));
 133         node->add_child("Scaler")->add_child_text (_scaler->id ());
 134         node->add_child("Eyes")->add_child_text (raw_convert<string> (_eyes));
 135         node->add_child("Part")->add_child_text (raw_convert<string> (_part));
 136         _colour_conversion.as_xml (node);
 137         if (send_subtitles && _subtitle.image) {
 138                 node->add_child ("SubtitleWidth")->add_child_text (raw_convert<string> (_subtitle.image->size().width));
 139                 node->add_child ("SubtitleHeight")->add_child_text (raw_convert<string> (_subtitle.image->size().height));
 140                 node->add_child ("SubtitleX")->add_child_text (raw_convert<string> (_subtitle.position.x));
 141                 node->add_child ("SubtitleY")->add_child_text (raw_convert<string> (_subtitle.position.y));
 142         }
 143 }
 144
 145 void
 146 PlayerVideo::send_binary (shared_ptr<Socket> socket, bool send_subtitles) const
 147 {
 148         _in->send_binary (socket);
 149         if (send_subtitles && _subtitle.image) {
 150                 _subtitle.image->write_to_socket (socket);
 151         }
 152 }
 153
 154 bool
 155 PlayerVideo::has_j2k () const
 156 {
 157         /* XXX: burnt-in subtitle; maybe other things */
 158
 159         shared_ptr<const J2KImageProxy> j2k = dynamic_pointer_cast<const J2KImageProxy> (_in);
 160         if (!j2k) {
 161                 return false;
 162         }
 163
 164         return _crop == Crop () && _inter_size == j2k->size();
 165 }
 166
 167 shared_ptr<EncodedData>
 168 PlayerVideo::j2k () const
 169 {
 170         shared_ptr<const J2KImageProxy> j2k = dynamic_pointer_cast<const J2KImageProxy> (_in);
 171         assert (j2k);
 172         return j2k->j2k ();
 173 }