source/collada/DLL.cpp

   1 /* Copyright (C) 2011 Wildfire Games.
   2  * This file is part of 0 A.D.
   3  *
   4  * 0 A.D. 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  * 0 A.D. 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 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "precompiled.h"
  19
  20 #include "CommonConvert.h"
  21 #include "PMDConvert.h"
  22 #include "PSAConvert.h"
  23 #include "StdSkeletons.h"
  24
  25 #include <cstdarg>
  26 #include <cassert>
  27
  28 void default_logger(void*, int severity, const char* message)
  29 {
  30         fprintf(stderr, "[%d] %s\n", severity, message);
  31 }
  32
  33 static LogFn g_Logger = &default_logger;
  34 static void* g_LoggerCBData = NULL;
  35
  36 EXPORT void set_logger(LogFn logger, void* cb_data)
  37 {
  38         if (logger)
  39         {
  40                 g_Logger = logger;
  41                 g_LoggerCBData = cb_data;
  42         }
  43         else
  44         {
  45                 g_Logger = &default_logger;
  46                 g_LoggerCBData = NULL;
  47         }
  48 }
  49
  50 void Log(int severity, const char* msg, ...)
  51 {
  52         char buffer[1024];
  53         va_list ap;
  54         va_start(ap, msg);
  55         vsnprintf(buffer, sizeof(buffer), msg, ap);
  56         buffer[sizeof(buffer)-1] = '\0';
  57         va_end(ap);
  58
  59         g_Logger(g_LoggerCBData, severity, buffer);
  60 }
  61
  62 struct BufferedOutputCallback : public OutputCB
  63 {
  64         static const unsigned int bufferSize = 4096;
  65         char buffer[bufferSize];
  66         unsigned int bufferUsed;
  67
  68         OutputFn fn;
  69         void* cb_data;
  70
  71         BufferedOutputCallback(OutputFn fn, void* cb_data)
  72                 : fn(fn), cb_data(cb_data), bufferUsed(0)
  73         {
  74         }
  75
  76         ~BufferedOutputCallback()
  77         {
  78                 // flush the buffer if it's not empty
  79                 if (bufferUsed > 0)
  80                         fn(cb_data, buffer, bufferUsed);
  81         }
  82
  83         virtual void operator() (const char* data, unsigned int length)
  84         {
  85                 if (bufferUsed+length > bufferSize)
  86                 {
  87                         // will overflow buffer, so flush the buffer first
  88                         fn(cb_data, buffer, bufferUsed);
  89                         bufferUsed = 0;
  90
  91                         if (length > bufferSize)
  92                         {
  93                                 // new data won't fit in buffer, so send it out unbuffered
  94                                 fn(cb_data, data, length);
  95                                 return;
  96                         }
  97                 }
  98
  99                 // append onto buffer
 100                 memcpy(buffer+bufferUsed, data, length);
 101                 bufferUsed += length;
 102                 assert(bufferUsed <= bufferSize);
 103         }
 104 };
 105
 106 int convert_dae_to_whatever(const char* dae, OutputFn writer, void* cb_data, void(*conv)(const char*, OutputCB&, std::string&))
 107 {
 108         Log(LOG_INFO, "Starting conversion");
 109
 110         FCollada::Initialize();
 111
 112         std::string xmlErrors;
 113         BufferedOutputCallback cb(writer, cb_data);
 114         try
 115         {
 116                 conv(dae, cb, xmlErrors);
 117         }
 118         catch (const ColladaException& e)
 119         {
 120                 if (! xmlErrors.empty())
 121                         Log(LOG_ERROR, "%s", xmlErrors.c_str());
 122
 123                 Log(LOG_ERROR, "%s", e.what());
 124
 125                 FCollada::Release();
 126
 127                 return -2;
 128         }
 129
 130         FCollada::Release();
 131
 132         if (! xmlErrors.empty())
 133         {
 134                 Log(LOG_ERROR, "%s", xmlErrors.c_str());
 135
 136                 return -1;
 137         }
 138
 139         return 0;
 140 }
 141
 142 EXPORT int convert_dae_to_pmd(const char* dae, OutputFn pmd_writer, void* cb_data)
 143 {
 144         return convert_dae_to_whatever(dae, pmd_writer, cb_data, ColladaToPMD);
 145 }
 146
 147 EXPORT int convert_dae_to_psa(const char* dae, OutputFn psa_writer, void* cb_data)
 148 {
 149         return convert_dae_to_whatever(dae, psa_writer, cb_data, ColladaToPSA);
 150 }
 151
 152 EXPORT int set_skeleton_definitions(const char* xml, int length)
 153 {
 154         std::string xmlErrors;
 155         try
 156         {
 157                 Skeleton::LoadSkeletonDataFromXml(xml, length, xmlErrors);
 158         }
 159         catch (const ColladaException& e)
 160         {
 161                 if (! xmlErrors.empty())
 162                         Log(LOG_ERROR, "%s", xmlErrors.c_str());
 163
 164                 Log(LOG_ERROR, "%s", e.what());
 165
 166                 return -1;
 167         }
 168
 169         return 0;
 170 }