assimp.assimp/code/AssbinLoader.cpp

/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
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Copyright (c) 2006-2012, assimp team

All rights reserved.

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  following disclaimer.

* Redistributions in binary form must reproduce the above
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*/

/** @file  AssbinLoader.cpp
 *  @brief Implementation of the .assbin importer class
 *
 *  see assbin_chunks.h
 */

#include "AssimpPCH.h"
#ifndef ASSIMP_BUILD_NO_ASSBIN_IMPORTER

// internal headers
#include "AssbinLoader.h"
#include "assbin_chunks.h"

using namespace Assimp;

static const aiImporterDesc desc = {
  ".assbin Importer",
  "Gargaj / Conspiracy",
  "",
  "",
  aiImporterFlags_SupportBinaryFlavour | aiImporterFlags_SupportCompressedFlavour,
  0,
  0,
  0,
  0,
  "assbin" 
};

const aiImporterDesc* AssbinImporter::GetInfo() const
{
  return &desc;
}

bool AssbinImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig ) const
{
  IOStream * in = pIOHandler->Open(pFile);
  if (!in)
    return false;

  char s[32];
  in->Read( s, sizeof(char), 32 );

  pIOHandler->Close(in);

  return strncmp( s, "ASSIMP.binary-dump.", 19 ) == 0;
}

template <typename T>
T Read(IOStream * stream)
{
  T t;
  stream->Read( &t, sizeof(T), 1 );
  return t;
}

template <>
aiString Read<aiString>(IOStream * stream)
{
  aiString s;
	stream->Read(&s.length,4,1);
  stream->Read(s.data,s.length,1);
  return s;
}

template <>
aiMatrix4x4 Read<aiMatrix4x4>(IOStream * stream)
{
  aiMatrix4x4 m;
	for (unsigned int i = 0; i < 4;++i) {
		for (unsigned int i2 = 0; i2 < 4;++i2) {
			m[i][i2] = Read<float>(stream);
		}
	}
	return m;
}

void AssbinImporter::ReadBinaryNode( IOStream * stream, aiNode** node )
{
	ai_assert( Read<uint32_t>(stream) == ASSBIN_CHUNK_AINODE);
  uint32_t size = Read<uint32_t>(stream);

  *node = new aiNode();

	(*node)->mName = Read<aiString>(stream);
	(*node)->mTransformation = Read<aiMatrix4x4>(stream);
	(*node)->mNumChildren = Read<unsigned int>(stream);
	(*node)->mNumMeshes = Read<unsigned int>(stream);

  if ((*node)->mNumMeshes)
  {
    (*node)->mMeshes = new unsigned int[(*node)->mNumMeshes];
	  for (unsigned int i = 0; i < (*node)->mNumMeshes; ++i) {
		  (*node)->mMeshes[i] = Read<unsigned int>(stream);
	  }
  }

  if ((*node)->mNumChildren)
  {
    (*node)->mChildren = new aiNode*[(*node)->mNumChildren];
	  for (unsigned int i = 0; i < (*node)->mNumChildren; ++i) {
		  ReadBinaryNode( stream, &(*node)->mChildren[i] );
	  }
  }

}

void AssbinImporter::ReadBinaryScene( IOStream * stream, aiScene* scene )
{
	ai_assert( Read<uint32_t>(stream) == ASSBIN_CHUNK_AISCENE);
  uint32_t size = Read<uint32_t>(stream);

	scene->mFlags         = Read<unsigned int>(stream);
	scene->mNumMeshes     = Read<unsigned int>(stream);
	scene->mNumMaterials  = Read<unsigned int>(stream);
	scene->mNumAnimations = Read<unsigned int>(stream);
	scene->mNumTextures   = Read<unsigned int>(stream);
	scene->mNumLights     = Read<unsigned int>(stream);
	scene->mNumCameras    = Read<unsigned int>(stream);

	// Read node graph
  scene->mRootNode = new aiNode[1];
	ReadBinaryNode( stream, &scene->mRootNode );

/*
	// Read all meshes
	for (unsigned int i = 0; i < scene->mNumMeshes;++i) {
		const aiMesh* mesh = scene->mMeshes[i];
		ReadBinaryMesh( stream,mesh);
	}

	// Read materials
	for (unsigned int i = 0; i< scene->mNumMaterials; ++i) {
		const aiMaterial* mat = scene->mMaterials[i];
		ReadBinaryMaterial(stream,mat);
	}

	// Read all animations
	for (unsigned int i = 0; i < scene->mNumAnimations;++i) {
		const aiAnimation* anim = scene->mAnimations[i];
		ReadBinaryAnim(stream,anim);
	}


	// Read all textures
	for (unsigned int i = 0; i < scene->mNumTextures;++i) {
		const aiTexture* mesh = scene->mTextures[i];
		ReadBinaryTexture(stream,mesh);
	}

	// Read lights
	for (unsigned int i = 0; i < scene->mNumLights;++i) {
		const aiLight* l = scene->mLights[i];
		ReadBinaryLight(stream,l);
	}

	// Read cameras
	for (unsigned int i = 0; i < scene->mNumCameras;++i) {
		const aiCamera* cam = scene->mCameras[i];
		ReadBinaryCamera(stream,cam);
	}
*/

}

void AssbinImporter::InternReadFile( const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler )
{
	IOStream * stream = pIOHandler->Open(pFile,"rb");
	if (!stream)
    return;

  stream->Seek( 44, aiOrigin_CUR ); // signature

	unsigned int versionMajor = Read<unsigned int>(stream);
	unsigned int versionMinor = Read<unsigned int>(stream);
	unsigned int versionRevision = Read<unsigned int>(stream);
	unsigned int compileFlags = Read<unsigned int>(stream);

	shortened = Read<uint16_t>(stream) > 0;
	compressed = Read<uint16_t>(stream) > 0;

  stream->Seek( 256, aiOrigin_CUR ); // original filename
  stream->Seek( 128, aiOrigin_CUR ); // options
  stream->Seek( 64, aiOrigin_CUR ); // padding

  if (compressed)
  {
    // TODO
  }
  else
  {
    ReadBinaryScene(stream,pScene);
  }
  
  pIOHandler->Close(stream);
}

#endif // !! ASSIMP_BUILD_NO_ASSBIN_IMPORTER