assimp.assimp/code/FBX/FBXExportProperty.cpp

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

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All rights reserved.

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* Redistributions in binary form must reproduce the above
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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

namespace Assimp {
namespace FBX {

// constructors for single element properties

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

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

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

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

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

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

// constructors for array-type properties

FBXExportProperty::FBXExportProperty(const char* c, bool raw)
: FBXExportProperty(std::string(c), raw) {
    // empty
}

// strings can either be saved as "raw" (R) data, or "string" (S) data
FBXExportProperty::FBXExportProperty(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]);
    }
}

FBXExportProperty::FBXExportProperty(const std::vector<uint8_t>& r)
: type('R')
, data(r) {
    // empty
}

FBXExportProperty::FBXExportProperty(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];
    }
}

FBXExportProperty::FBXExportProperty(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];
    }
}

FBXExportProperty::FBXExportProperty(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];
    }
}

FBXExportProperty::FBXExportProperty(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];
    }
}

FBXExportProperty::FBXExportProperty(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 FBXExportProperty::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 FBXExportProperty::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 FBXExportProperty::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 FBXExportProperty::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());
    }
}

} // Namespace FBX
} // Namespace Assimp

#endif // ASSIMP_BUILD_NO_FBX_EXPORTER
#endif // ASSIMP_BUILD_NO_EXPORT