git.sesse.net Git - casparcg/blob - modules/psd/descriptor.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Niklas P Andersson, niklas.p.andersson@svt.se
  20 */
  21
  22 #include "descriptor.h"
  23 #include "misc.h"
  24 #include "util/pdf_reader.h"
  25
  26 #include <common/log.h>
  27
  28 #include <boost/property_tree/ptree.hpp>
  29 #include <boost/property_tree/xml_parser.hpp>
  30 #include <boost/locale.hpp>
  31
  32 #include <memory>
  33
  34 namespace caspar { namespace psd {
  35
  36         class descriptor::context::scoped_holder
  37         {
  38                 descriptor::context::ptr_type ctx_;
  39         public:
  40                 explicit scoped_holder(const std::wstring& key, descriptor::context::ptr_type ctx) : ctx_(ctx)
  41                 {
  42                         Ptree *parent = ctx_->stack.back();
  43                         Ptree *child = &parent->push_back(std::make_pair(key, Ptree()))->second;
  44                         ctx_->stack.push_back(child);
  45                 }
  46                 ~scoped_holder()
  47                 {
  48                         ctx_->stack.pop_back();
  49                 }
  50         };
  51
  52         descriptor::descriptor(const std::wstring& debug_name) : context_(std::make_shared<context>(debug_name))
  53         {
  54                 context_->stack.push_back(&context_->root);
  55         }
  56         descriptor::descriptor(const std::wstring& key, context::ptr_type context) : context_(context)
  57         {
  58                 Ptree *parent = context_->stack.back();
  59                 Ptree *child = &parent->push_back(std::make_pair(key, Ptree()))->second;
  60                 context->stack.push_back(child);
  61         }
  62         descriptor::~descriptor()
  63         {
  64                 context_->stack.pop_back();
  65         }
  66
  67 void descriptor::populate(bigendian_file_input_stream& stream)
  68 {
  69         stream.read_unicode_string();
  70         stream.read_id_string();
  71         int element_count = stream.read_long();
  72         for (int element_index = 0; element_index < element_count; ++element_index)
  73         {
  74                 std::wstring key = stream.read_id_string();
  75                 read_value(key, stream);
  76         }
  77
  78         if (context_->stack.size() == 1)
  79                 log::print_child(boost::log::trivial::trace, context_->debug_name + L": ", L"", context_->root);
  80 }
  81
  82 void descriptor::read_value(const std::wstring& key, bigendian_file_input_stream& stream)
  83 {
  84         auto value_type = stream.read_long();
  85
  86         switch(value_type)
  87         {
  88         case 'Objc':
  89                 {
  90                         descriptor desc(key, context_);
  91                         desc.populate(stream);
  92                 }
  93                 break;
  94
  95         case 'doub':
  96                 {
  97                         context_->stack.back()->put(key, stream.read_double());
  98                 }
  99                 break;
 100
 101         case 'TEXT':
 102                 {
 103                         context_->stack.back()->put(key, stream.read_unicode_string());
 104                 }
 105                 break;
 106
 107         case 'enum':
 108                 {
 109                         auto k = stream.read_id_string();
 110                         auto v = stream.read_id_string();
 111                         context_->stack.back()->put(k, v);
 112                 }
 113                 break;
 114
 115         case 'long':
 116                 {
 117                         std::int32_t value = stream.read_long();
 118                         context_->stack.back()->put(key, value);
 119                 }
 120                 break;
 121
 122         case 'bool':
 123                 {
 124                         context_->stack.back()->put(key, stream.read_byte());
 125                 }
 126                 break;
 127
 128         case 'VlLs':
 129                 {
 130                         context::scoped_holder list(key, context_);
 131                         int count = stream.read_long();
 132
 133                         for (int i = 0; i < count; ++i)
 134                         {
 135                                 read_value(L"li", stream);
 136                         }
 137                 }
 138                 break;
 139
 140         case 'tdta':
 141                 {
 142                         auto rawdata_length = stream.read_long();
 143                         std::vector<char> rawdata(rawdata_length);
 144                         stream.read(rawdata.data(), rawdata_length);
 145                         std::wstring data_str(rawdata.begin(), rawdata.end());
 146                         context_->stack.back()->put(key, data_str);
 147                 }
 148                 break;
 149
 150         case 'UntF':
 151                 {
 152                         context::scoped_holder list(key, context_);
 153                         auto unit = stream.read_long();
 154                         std::string type(reinterpret_cast<char*>(&unit), 4);
 155                         std::wstring wtype(type.rbegin(), type.rend());
 156                         context_->stack.back()->put(wtype, stream.read_double());
 157                 }
 158                 break;
 159
 160         case 'obj ':
 161         case 'GlbO':
 162         case 'type':
 163         case 'GlbC':
 164         case 'alis':
 165         default:
 166                 //descriptor type not supported yet
 167                 CASPAR_THROW_EXCEPTION(psd_file_format_exception() << msg_info("descriptor type not supported yet"));
 168         }
 169 }
 170
 171 }       //namespace psd
 172 }       //namespace caspar