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authorMarijn Tamis <[email protected]>2018-05-03 18:22:48 +0200
committerMarijn Tamis <[email protected]>2018-05-03 18:22:48 +0200
commitca32c59a58d37c1822e185a2d5f3d0d3e8943593 (patch)
treeb06b9eec03f34344ef8fc31aa147b2714d3962ee /NvCloth/samples/external/assimp-4.1.0/code/MemoryIOWrapper.h
parentForced rename of platform folders in cmake dir. Git didn't pick this up before. (diff)
downloadnvcloth-ca32c59a58d37c1822e185a2d5f3d0d3e8943593.tar.xz
nvcloth-ca32c59a58d37c1822e185a2d5f3d0d3e8943593.zip
NvCloth 1.1.4 Release. (24070740)
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2017, assimp team
+
+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.
+
+----------------------------------------------------------------------
+*/
+
+/** @file MemoryIOWrapper.h
+ * Handy IOStream/IOSystem implemetation to read directly from a memory buffer */
+#ifndef AI_MEMORYIOSTREAM_H_INC
+#define AI_MEMORYIOSTREAM_H_INC
+
+#include <assimp/IOStream.hpp>
+#include <assimp/IOSystem.hpp>
+#include <assimp/ai_assert.h>
+#include <stdint.h>
+
+namespace Assimp {
+#define AI_MEMORYIO_MAGIC_FILENAME "$$$___magic___$$$"
+#define AI_MEMORYIO_MAGIC_FILENAME_LENGTH 17
+
+// ----------------------------------------------------------------------------------
+/** Implementation of IOStream to read directly from a memory buffer */
+// ----------------------------------------------------------------------------------
+class MemoryIOStream : public IOStream
+{
+ //friend class MemoryIOSystem;
+public:
+ MemoryIOStream (const uint8_t* buff, size_t len, bool own = false)
+ : buffer (buff)
+ , length(len)
+ , pos((size_t)0)
+ , own(own)
+ {
+ }
+
+public:
+
+ ~MemoryIOStream () {
+ if(own) {
+ delete[] buffer;
+ }
+ }
+
+ // -------------------------------------------------------------------
+ // Read from stream
+ size_t Read(void* pvBuffer, size_t pSize, size_t pCount) {
+ const size_t cnt = std::min(pCount,(length-pos)/pSize),ofs = pSize*cnt;
+
+ memcpy(pvBuffer,buffer+pos,ofs);
+ pos += ofs;
+
+ return cnt;
+ }
+
+ // -------------------------------------------------------------------
+ // Write to stream
+ size_t Write(const void* /*pvBuffer*/, size_t /*pSize*/,size_t /*pCount*/) {
+ ai_assert(false); // won't be needed
+ return 0;
+ }
+
+ // -------------------------------------------------------------------
+ // Seek specific position
+ aiReturn Seek(size_t pOffset, aiOrigin pOrigin) {
+ if (aiOrigin_SET == pOrigin) {
+ if (pOffset >= length) {
+ return AI_FAILURE;
+ }
+ pos = pOffset;
+ }
+ else if (aiOrigin_END == pOrigin) {
+ if (pOffset >= length) {
+ return AI_FAILURE;
+ }
+ pos = length-pOffset;
+ }
+ else {
+ if (pOffset+pos >= length) {
+ return AI_FAILURE;
+ }
+ pos += pOffset;
+ }
+ return AI_SUCCESS;
+ }
+
+ // -------------------------------------------------------------------
+ // Get current seek position
+ size_t Tell() const {
+ return pos;
+ }
+
+ // -------------------------------------------------------------------
+ // Get size of file
+ size_t FileSize() const {
+ return length;
+ }
+
+ // -------------------------------------------------------------------
+ // Flush file contents
+ void Flush() {
+ ai_assert(false); // won't be needed
+ }
+
+private:
+ const uint8_t* buffer;
+ size_t length,pos;
+ bool own;
+};
+
+// ---------------------------------------------------------------------------
+/** Dummy IO system to read from a memory buffer */
+class MemoryIOSystem : public IOSystem
+{
+public:
+ /** Constructor. */
+ MemoryIOSystem (const uint8_t* buff, size_t len)
+ : buffer (buff), length(len) {
+ }
+
+ /** Destructor. */
+ ~MemoryIOSystem() {
+ }
+
+ // -------------------------------------------------------------------
+ /** Tests for the existence of a file at the given path. */
+ bool Exists( const char* pFile) const {
+ return !strncmp(pFile,AI_MEMORYIO_MAGIC_FILENAME,AI_MEMORYIO_MAGIC_FILENAME_LENGTH);
+ }
+
+ // -------------------------------------------------------------------
+ /** Returns the directory separator. */
+ char getOsSeparator() const {
+ return '/'; // why not? it doesn't care
+ }
+
+ // -------------------------------------------------------------------
+ /** Open a new file with a given path. */
+ IOStream* Open( const char* pFile, const char* /*pMode*/ = "rb") {
+ if (strncmp(pFile,AI_MEMORYIO_MAGIC_FILENAME,AI_MEMORYIO_MAGIC_FILENAME_LENGTH)) {
+ return NULL;
+ }
+ return new MemoryIOStream(buffer,length);
+ }
+
+ // -------------------------------------------------------------------
+ /** Closes the given file and releases all resources associated with it. */
+ void Close( IOStream* pFile) {
+ delete pFile;
+ }
+
+ // -------------------------------------------------------------------
+ /** Compare two paths */
+ bool ComparePaths (const char* /*one*/, const char* /*second*/) const {
+ return false;
+ }
+
+private:
+ const uint8_t* buffer;
+ size_t length;
+};
+} // end namespace Assimp
+
+#endif