assimp/code/FBXExportProperty.cpp

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

Copyright (c) 2006-2019, assimp team

All rights reserved.

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following disclaimer.

* Redistributions in binary form must reproduce the above
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*/
#ifndef ASSIMP_BUILD_NO_EXPORT
#ifndef ASSIMP_BUILD_NO_FBX_EXPORTER

#include "FBXExportProperty.h"

#include <assimp/StreamWriter.h> // StreamWriterLE
#include <assimp/Exceptional.h> // DeadlyExportError

#include <string>
#include <vector>
#include <ostream>
#include <locale>
#include <sstream> // ostringstream


// constructors for single element properties

FBX::Property::Property(bool v)
    : type('C'), data(1)
{
    data = {uint8_t(v)};
}

FBX::Property::Property(int16_t v) : type('Y'), data(2)
{
    uint8_t* d = data.data();
    (reinterpret_cast<int16_t*>(d))[0] = v;
}

FBX::Property::Property(int32_t v) : type('I'), data(4)
{
    uint8_t* d = data.data();
    (reinterpret_cast<int32_t*>(d))[0] = v;
}

FBX::Property::Property(float v) : type('F'), data(4)
{
    uint8_t* d = data.data();
    (reinterpret_cast<float*>(d))[0] = v;
}

FBX::Property::Property(double v) : type('D'), data(8)
{
    uint8_t* d = data.data();
    (reinterpret_cast<double*>(d))[0] = v;
}

FBX::Property::Property(int64_t v) : type('L'), data(8)
{
    uint8_t* d = data.data();
    (reinterpret_cast<int64_t*>(d))[0] = v;
}


// constructors for array-type properties

FBX::Property::Property(const char* c, bool raw)
    : Property(std::string(c), raw)
{}

// strings can either be saved as "raw" (R) data, or "string" (S) data
FBX::Property::Property(const std::string& s, bool raw)
    : type(raw ? 'R' : 'S'), data(s.size())
{
    for (size_t i = 0; i < s.size(); ++i) {
        data[i] = uint8_t(s[i]);
    }
}

FBX::Property::Property(const std::vector<uint8_t>& r)
    : type('R'), data(r)
{}

FBX::Property::Property(const std::vector<int32_t>& va)
    : type('i'), data(4*va.size())
{
    int32_t* d = reinterpret_cast<int32_t*>(data.data());
    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
}

FBX::Property::Property(const std::vector<int64_t>& va)
    : type('l'), data(8*va.size())
{
    int64_t* d = reinterpret_cast<int64_t*>(data.data());
    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
}

FBX::Property::Property(const std::vector<float>& va)
    : type('f'), data(4*va.size())
{
    float* d = reinterpret_cast<float*>(data.data());
    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
}

FBX::Property::Property(const std::vector<double>& va)
    : type('d'), data(8*va.size())
{
    double* d = reinterpret_cast<double*>(data.data());
    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
}

FBX::Property::Property(const aiMatrix4x4& vm)
    : type('d'), data(8*16)
{
    double* d = reinterpret_cast<double*>(data.data());
    for (unsigned int c = 0; c < 4; ++c) {
        for (unsigned int r = 0; r < 4; ++r) {
            d[4*c+r] = vm[r][c];
        }
    }
}

// public member functions

size_t FBX::Property::size()
{
    switch (type) {
    case 'C': case 'Y': case 'I': case 'F': case 'D': case 'L':
        return data.size() + 1;
    case 'S': case 'R':
        return data.size() + 5;
    case 'i': case 'd':
        return data.size() + 13;
    default:
        throw DeadlyExportError("Requested size on property of unknown type");
    }
}

void FBX::Property::DumpBinary(Assimp::StreamWriterLE &s)
{
    s.PutU1(type);
    uint8_t* d = data.data();
    size_t N;
    switch (type) {
    case 'C': s.PutU1(*(reinterpret_cast<uint8_t*>(d))); return;
    case 'Y': s.PutI2(*(reinterpret_cast<int16_t*>(d))); return;
    case 'I': s.PutI4(*(reinterpret_cast<int32_t*>(d))); return;
    case 'F': s.PutF4(*(reinterpret_cast<float*>(d))); return;
    case 'D': s.PutF8(*(reinterpret_cast<double*>(d))); return;
    case 'L': s.PutI8(*(reinterpret_cast<int64_t*>(d))); return;
    case 'S':
    case 'R':
        s.PutU4(uint32_t(data.size()));
        for (size_t i = 0; i < data.size(); ++i) { s.PutU1(data[i]); }
        return;
    case 'i':
        N = data.size() / 4;
        s.PutU4(uint32_t(N)); // number of elements
        s.PutU4(0); // no encoding (1 would be zip-compressed)
        // TODO: compress if large?
        s.PutU4(uint32_t(data.size())); // data size
        for (size_t i = 0; i < N; ++i) {
            s.PutI4((reinterpret_cast<int32_t*>(d))[i]);
        }
        return;
    case 'l':
        N = data.size() / 8;
        s.PutU4(uint32_t(N)); // number of elements
        s.PutU4(0); // no encoding (1 would be zip-compressed)
        // TODO: compress if large?
        s.PutU4(uint32_t(data.size())); // data size
        for (size_t i = 0; i < N; ++i) {
            s.PutI8((reinterpret_cast<int64_t*>(d))[i]);
        }
        return;
    case 'f':
        N = data.size() / 4;
        s.PutU4(uint32_t(N)); // number of elements
        s.PutU4(0); // no encoding (1 would be zip-compressed)
        // TODO: compress if large?
        s.PutU4(uint32_t(data.size())); // data size
        for (size_t i = 0; i < N; ++i) {
            s.PutF4((reinterpret_cast<float*>(d))[i]);
        }
        return;
    case 'd':
        N = data.size() / 8;
        s.PutU4(uint32_t(N)); // number of elements
        s.PutU4(0); // no encoding (1 would be zip-compressed)
        // TODO: compress if large?
        s.PutU4(uint32_t(data.size())); // data size
        for (size_t i = 0; i < N; ++i) {
            s.PutF8((reinterpret_cast<double*>(d))[i]);
        }
        return;
    default:
        std::ostringstream err;
        err << "Tried to dump property with invalid type '";
        err << type << "'!";
        throw DeadlyExportError(err.str());
    }
}

void FBX::Property::DumpAscii(Assimp::StreamWriterLE &outstream, int indent)
{
    std::ostringstream ss;
    ss.imbue(std::locale::classic());
    ss.precision(15); // this seems to match official FBX SDK exports
    DumpAscii(ss, indent);
    outstream.PutString(ss.str());
}

void FBX::Property::DumpAscii(std::ostream& s, int indent)
{
    // no writing type... or anything. just shove it into the stream.
    uint8_t* d = data.data();
    size_t N;
    size_t swap = data.size();
    size_t count = 0;
    switch (type) {
    case 'C':
        if (*(reinterpret_cast<uint8_t*>(d))) { s << 'T'; }
        else { s << 'F'; }
        return;
    case 'Y': s << *(reinterpret_cast<int16_t*>(d)); return;
    case 'I': s << *(reinterpret_cast<int32_t*>(d)); return;
    case 'F': s << *(reinterpret_cast<float*>(d)); return;
    case 'D': s << *(reinterpret_cast<double*>(d)); return;
    case 'L': s << *(reinterpret_cast<int64_t*>(d)); return;
    case 'S':
        // first search to see if it has "\x00\x01" in it -
        // which separates fields which are reversed in the ascii version.
        // yeah.
        // FBX, yeah.
        for (size_t i = 0; i < data.size(); ++i) {
            if (data[i] == '\0') {
                swap = i;
                break;
            }
        }
    case 'R':
        s << '"';
        // we might as well check this now,
        // probably it will never happen
        for (size_t i = 0; i < data.size(); ++i) {
            char c = data[i];
            if (c == '"') {
                throw runtime_error("can't handle quotes in property string");
            }
        }
        // first write the SWAPPED member (if any)
        for (size_t i = swap + 2; i < data.size(); ++i) {
            char c = data[i];
            s << c;
        }
        // then a separator
        if (swap != data.size()) {
            s << "::";
        }
        // then the initial member
        for (size_t i = 0; i < swap; ++i) {
            char c = data[i];
            s << c;
        }
        s << '"';
        return;
    case 'i':
        N = data.size() / 4; // number of elements
        s << '*' << N << " {\n";
        for (int i = 0; i < indent + 1; ++i) { s << '\t'; }
        s << "a: ";
        for (size_t i = 0; i < N; ++i) {
            if (i > 0) { s << ','; }
            if (count++ > 120) { s << '\n'; count = 0; }
            s << (reinterpret_cast<int32_t*>(d))[i];
        }
        s << '\n';
        for (int i = 0; i < indent; ++i) { s << '\t'; }
        s << "} ";
        return;
    case 'l':
        N = data.size() / 8;
        s << '*' << N << " {\n";
        for (int i = 0; i < indent + 1; ++i) { s << '\t'; }
        s << "a: ";
        for (size_t i = 0; i < N; ++i) {
            if (i > 0) { s << ','; }
            if (count++ > 120) { s << '\n'; count = 0; }
            s << (reinterpret_cast<int64_t*>(d))[i];
        }
        s << '\n';
        for (int i = 0; i < indent; ++i) { s << '\t'; }
        s << "} ";
        return;
    case 'f':
        N = data.size() / 4;
        s << '*' << N << " {\n";
        for (int i = 0; i < indent + 1; ++i) { s << '\t'; }
        s << "a: ";
        for (size_t i = 0; i < N; ++i) {
            if (i > 0) { s << ','; }
            if (count++ > 120) { s << '\n'; count = 0; }
            s << (reinterpret_cast<float*>(d))[i];
        }
        s << '\n';
        for (int i = 0; i < indent; ++i) { s << '\t'; }
        s << "} ";
        return;
    case 'd':
        N = data.size() / 8;
        s << '*' << N << " {\n";
        for (int i = 0; i < indent + 1; ++i) { s << '\t'; }
        s << "a: ";
        // set precision to something that can handle doubles
        s.precision(15);
        for (size_t i = 0; i < N; ++i) {
            if (i > 0) { s << ','; }
            if (count++ > 120) { s << '\n'; count = 0; }
            s << (reinterpret_cast<double*>(d))[i];
        }
        s << '\n';
        for (int i = 0; i < indent; ++i) { s << '\t'; }
        s << "} ";
        return;
    default:
        std::ostringstream err;
        err << "Tried to dump property with invalid type '";
        err << type << "'!";
        throw runtime_error(err.str());
    }
}

#endif // ASSIMP_BUILD_NO_FBX_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT