diff options
author | sanine <sanine.not@pm.me> | 2022-03-04 10:47:15 -0600 |
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committer | sanine <sanine.not@pm.me> | 2022-03-04 10:47:15 -0600 |
commit | 058f98a63658dc1a2579826ba167fd61bed1e21f (patch) | |
tree | bcba07a1615a14d943f3af3f815a42f3be86b2f3 /src/mesh/assimp-master/code/AssetLib/M3D/M3DWrapper.cpp | |
parent | 2f8028ac9e0812cb6f3cbb08f0f419e4e717bd22 (diff) |
add assimp submodule
Diffstat (limited to 'src/mesh/assimp-master/code/AssetLib/M3D/M3DWrapper.cpp')
-rw-r--r-- | src/mesh/assimp-master/code/AssetLib/M3D/M3DWrapper.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/mesh/assimp-master/code/AssetLib/M3D/M3DWrapper.cpp b/src/mesh/assimp-master/code/AssetLib/M3D/M3DWrapper.cpp new file mode 100644 index 0000000..30452c7 --- /dev/null +++ b/src/mesh/assimp-master/code/AssetLib/M3D/M3DWrapper.cpp @@ -0,0 +1,152 @@ +/* +Open Asset Import Library (assimp) +---------------------------------------------------------------------- + +Copyright (c) 2006-2022, assimp team +Copyright (c) 2019 bzt + +All rights reserved. + +Redistribution and use of this software in source and binary forms, +with or without modification, are permitted provided that the +following conditions are met: + +* Redistributions of source code must retain the above +copyright notice, this list of conditions and the +following disclaimer. + +* Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the +following disclaimer in the documentation and/or other +materials provided with the distribution. + +* Neither the name of the assimp team, nor the names of its +contributors may be used to endorse or promote products +derived from this software without specific prior +written permission of the assimp team. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +---------------------------------------------------------------------- +*/ +#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER +#if !(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER) + +#include "M3DWrapper.h" + +#include <assimp/DefaultIOSystem.h> +#include <assimp/IOStreamBuffer.h> +#include <assimp/ai_assert.h> + +#ifdef ASSIMP_USE_M3D_READFILECB + +#if (__cplusplus >= 201103L) || !defined(_MSC_VER) || (_MSC_VER >= 1900) // C++11 and MSVC 2015 onwards +#define threadlocal thread_local +#else +#if defined(_MSC_VER) && (_MSC_VER >= 1800) // there's an alternative for MSVC 2013 +#define threadlocal __declspec(thread) +#else +#define threadlocal +#endif +#endif + +extern "C" { + +// workaround: the M3D SDK expects a C callback, but we want to use Assimp::IOSystem to implement that +threadlocal void *m3dimporter_pIOHandler; + +unsigned char *m3dimporter_readfile(char *fn, unsigned int *size) { + ai_assert(nullptr != fn); + ai_assert(nullptr != size); + std::string file(fn); + std::unique_ptr<Assimp::IOStream> pStream( + (reinterpret_cast<Assimp::IOSystem *>(m3dimporter_pIOHandler))->Open(file, "rb")); + size_t fileSize = 0; + unsigned char *data = nullptr; + // sometimes pStream is nullptr in a single-threaded scenario too for some reason + // (should be an empty object returning nothing I guess) + if (pStream) { + fileSize = pStream->FileSize(); + // should be allocated with malloc(), because the library will call free() to deallocate + data = (unsigned char *)malloc(fileSize); + if (!data || !pStream.get() || !fileSize || fileSize != pStream->Read(data, 1, fileSize)) { + pStream.reset(); + *size = 0; + // don't throw a deadly exception, it's not fatal if we can't read an external asset + return nullptr; + } + pStream.reset(); + } + *size = (int)fileSize; + return data; +} +} +#endif + +namespace Assimp { +M3DWrapper::M3DWrapper() { + // use malloc() here because m3d_free() will call free() + m3d_ = (m3d_t *)calloc(1, sizeof(m3d_t)); +} + +M3DWrapper::M3DWrapper(IOSystem *pIOHandler, const std::vector<unsigned char> &buffer) { + if (nullptr == pIOHandler) { + ai_assert(nullptr != pIOHandler); + } + +#ifdef ASSIMP_USE_M3D_READFILECB + // pass this IOHandler to the C callback in a thread-local pointer + m3dimporter_pIOHandler = pIOHandler; + m3d_ = m3d_load(const_cast<unsigned char *>(buffer.data()), m3dimporter_readfile, free, nullptr); + // Clear the C callback + m3dimporter_pIOHandler = nullptr; +#else + m3d_ = m3d_load(const_cast<unsigned char *>(buffer.data()), nullptr, nullptr, nullptr); +#endif +} + +M3DWrapper::~M3DWrapper() { + reset(); +} + +void M3DWrapper::reset() { + ClearSave(); + if (m3d_) { + m3d_free(m3d_); + } + m3d_ = nullptr; +} + +unsigned char *M3DWrapper::Save(int quality, int flags, unsigned int &size) { +#if (!(ASSIMP_BUILD_NO_EXPORT || ASSIMP_BUILD_NO_M3D_EXPORTER)) + ClearSave(); + saved_output_ = m3d_save(m3d_, quality, flags, &size); + return saved_output_; +#else + (void)quality; + (void)flags; + (void)size; + return nullptr; +#endif +} + +void M3DWrapper::ClearSave() { + if (saved_output_) { + M3D_FREE(saved_output_); + } + saved_output_ = nullptr; +} +} // namespace Assimp + +#endif +#endif |