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authorsanine <sanine.not@pm.me>2022-04-16 11:55:09 -0500
committersanine <sanine.not@pm.me>2022-04-16 11:55:09 -0500
commitdb81b925d776103326128bf629cbdda576a223e7 (patch)
tree58bea8155c686733310009f6bed7363f91fbeb9d /libs/assimp/contrib/Open3DGC/o3dgcDynamicVectorDecoder.cpp
parent55860037b14fb3893ba21cf2654c83d349cc1082 (diff)
move 3rd-party librarys into libs/ and add built-in honeysuckle
Diffstat (limited to 'libs/assimp/contrib/Open3DGC/o3dgcDynamicVectorDecoder.cpp')
-rw-r--r--libs/assimp/contrib/Open3DGC/o3dgcDynamicVectorDecoder.cpp278
1 files changed, 278 insertions, 0 deletions
diff --git a/libs/assimp/contrib/Open3DGC/o3dgcDynamicVectorDecoder.cpp b/libs/assimp/contrib/Open3DGC/o3dgcDynamicVectorDecoder.cpp
new file mode 100644
index 0000000..b92452e
--- /dev/null
+++ b/libs/assimp/contrib/Open3DGC/o3dgcDynamicVectorDecoder.cpp
@@ -0,0 +1,278 @@
+/*
+Copyright (c) 2013 Khaled Mammou - Advanced Micro Devices, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+#include "o3dgcDynamicVectorDecoder.h"
+#include "o3dgcArithmeticCodec.h"
+
+
+//#define DEBUG_VERBOSE
+
+namespace o3dgc
+{
+#ifdef DEBUG_VERBOSE
+ FILE * g_fileDebugDVCDec = NULL;
+#endif //DEBUG_VERBOSE
+
+ O3DGCErrorCode IUpdate(long * const data, const long size)
+ {
+ assert(size > 1);
+ const long size1 = size - 1;
+ long p = 2;
+ data[0] -= data[1] >> 1;
+ while(p < size1)
+ {
+ data[p] -= (data[p-1] + data[p+1] + 2) >> 2;
+ p += 2;
+ }
+ if ( p == size1)
+ {
+ data[p] -= data[p-1]>>1;
+ }
+ return O3DGC_OK;
+ }
+ O3DGCErrorCode IPredict(long * const data, const long size)
+ {
+ assert(size > 1);
+ const long size1 = size - 1;
+ long p = 1;
+ while(p < size1)
+ {
+ data[p] += (data[p-1] + data[p+1] + 1) >> 1;
+ p += 2;
+ }
+ if ( p == size1)
+ {
+ data[p] += data[p-1];
+ }
+ return O3DGC_OK;
+ }
+ O3DGCErrorCode Merge(long * const data, const long size)
+ {
+ assert(size > 1);
+ const long h = (size >> 1) + (size & 1);
+ long a = h-1;
+ long b = h;
+ while (a > 0)
+ {
+ for (long i = a; i < b; i += 2)
+ {
+ swap(data[i], data[i+1]);
+ }
+ --a;
+ ++b;
+ }
+ return O3DGC_OK;
+ }
+ inline O3DGCErrorCode ITransform(long * const data, const unsigned long size)
+ {
+ unsigned long n = size;
+ unsigned long even = 0;
+ unsigned long k = 0;
+ even += ((n&1) << k++);
+ while(n > 1)
+ {
+ n = (n >> 1) + (n & 1);
+ even += ((n&1) << k++);
+ }
+ for(long i = k-2; i >= 0; --i)
+ {
+ n = (n << 1) - ((even>>i) & 1);
+ Merge (data, n);
+ IUpdate (data, n);
+ IPredict(data, n);
+ }
+ return O3DGC_OK;
+ }
+ DynamicVectorDecoder::DynamicVectorDecoder(void)
+ {
+ m_streamSize = 0;
+ m_maxNumVectors = 0;
+ m_numVectors = 0;
+ m_dimVectors = 0;
+ m_quantVectors = 0;
+ m_iterator = 0;
+ m_streamType = O3DGC_STREAM_TYPE_UNKOWN;
+ }
+ DynamicVectorDecoder::~DynamicVectorDecoder()
+ {
+ delete [] m_quantVectors;
+ }
+ O3DGCErrorCode DynamicVectorDecoder::DecodeHeader(DynamicVector & dynamicVector,
+ const BinaryStream & bstream)
+ {
+ unsigned long iterator0 = m_iterator;
+ unsigned long start_code = bstream.ReadUInt32(m_iterator, O3DGC_STREAM_TYPE_BINARY);
+ if (start_code != O3DGC_DV_START_CODE)
+ {
+ m_iterator = iterator0;
+ start_code = bstream.ReadUInt32(m_iterator, O3DGC_STREAM_TYPE_ASCII);
+ if (start_code != O3DGC_DV_START_CODE)
+ {
+ return O3DGC_ERROR_CORRUPTED_STREAM;
+ }
+ else
+ {
+ m_streamType = O3DGC_STREAM_TYPE_ASCII;
+ }
+ }
+ else
+ {
+ m_streamType = O3DGC_STREAM_TYPE_BINARY;
+ }
+ m_streamSize = bstream.ReadUInt32(m_iterator, m_streamType);
+ m_params.SetEncodeMode( (O3DGCDVEncodingMode) bstream.ReadUChar(m_iterator, m_streamType));
+ dynamicVector.SetNVector ( bstream.ReadUInt32(m_iterator, m_streamType) );
+
+ if (dynamicVector.GetNVector() > 0)
+ {
+ dynamicVector.SetDimVector( bstream.ReadUInt32(m_iterator, m_streamType) );
+ m_params.SetQuantBits(bstream.ReadUChar(m_iterator, m_streamType));
+ }
+ return O3DGC_OK;
+ }
+ O3DGCErrorCode DynamicVectorDecoder::DecodePlayload(DynamicVector & dynamicVector,
+ const BinaryStream & bstream)
+ {
+ O3DGCErrorCode ret = O3DGC_OK;
+#ifdef DEBUG_VERBOSE
+ g_fileDebugDVCDec = fopen("dv_dec.txt", "w");
+#endif //DEBUG_VERBOSE
+ unsigned long start = m_iterator;
+ unsigned long streamSize = bstream.ReadUInt32(m_iterator, m_streamType); // bitsream size
+
+ const unsigned long dim = dynamicVector.GetDimVector();
+ const unsigned long num = dynamicVector.GetNVector();
+ const unsigned long size = dim * num;
+ for(unsigned long j=0 ; j < dynamicVector.GetDimVector() ; ++j)
+ {
+ dynamicVector.SetMin(j, (Real) bstream.ReadFloat32(m_iterator, m_streamType));
+ dynamicVector.SetMax(j, (Real) bstream.ReadFloat32(m_iterator, m_streamType));
+ }
+ Arithmetic_Codec acd;
+ Static_Bit_Model bModel0;
+ Adaptive_Bit_Model bModel1;
+ unsigned char * buffer = 0;
+ streamSize -= (m_iterator - start);
+ unsigned int exp_k = 0;
+ unsigned int M = 0;
+ if (m_streamType == O3DGC_STREAM_TYPE_BINARY)
+ {
+ bstream.GetBuffer(m_iterator, buffer);
+ m_iterator += streamSize;
+ acd.set_buffer(streamSize, buffer);
+ acd.start_decoder();
+ exp_k = acd.ExpGolombDecode(0, bModel0, bModel1);
+ M = acd.ExpGolombDecode(0, bModel0, bModel1);
+ }
+ Adaptive_Data_Model mModelValues(M+2);
+
+ if (m_maxNumVectors < size)
+ {
+ delete [] m_quantVectors;
+ m_maxNumVectors = size;
+ m_quantVectors = new long [size];
+ }
+ if (m_streamType == O3DGC_STREAM_TYPE_ASCII)
+ {
+ for(unsigned long v = 0; v < num; ++v)
+ {
+ for(unsigned long d = 0; d < dim; ++d)
+ {
+ m_quantVectors[d * num + v] = bstream.ReadIntASCII(m_iterator);
+ }
+ }
+ }
+ else
+ {
+ for(unsigned long v = 0; v < num; ++v)
+ {
+ for(unsigned long d = 0; d < dim; ++d)
+ {
+ m_quantVectors[d * num + v] = DecodeIntACEGC(acd, mModelValues, bModel0, bModel1, exp_k, M);
+ }
+ }
+ }
+ #ifdef DEBUG_VERBOSE
+ printf("IntArray (%i, %i)\n", num, dim);
+ fprintf(g_fileDebugDVCDec, "IntArray (%i, %i)\n", num, dim);
+ for(unsigned long v = 0; v < num; ++v)
+ {
+ for(unsigned long d = 0; d < dim; ++d)
+ {
+ printf("%i\t %i \t %i\n", d * num + v, m_quantVectors[d * num + v], IntToUInt(m_quantVectors[d * num + v]));
+ fprintf(g_fileDebugDVCDec, "%i\t %i \t %i\n", d * num + v, m_quantVectors[d * num + v], IntToUInt(m_quantVectors[d * num + v]));
+ }
+ }
+ fflush(g_fileDebugDVCDec);
+ #endif //DEBUG_VERBOSE
+ for(unsigned long d = 0; d < dim; ++d)
+ {
+ ITransform(m_quantVectors + d * num, num);
+ }
+ IQuantize(dynamicVector.GetVectors(),
+ num,
+ dim,
+ dynamicVector.GetStride(),
+ dynamicVector.GetMin(),
+ dynamicVector.GetMax(),
+ m_params.GetQuantBits());
+
+#ifdef DEBUG_VERBOSE
+ fclose(g_fileDebugDVCDec);
+#endif //DEBUG_VERBOSE
+ return ret;
+ }
+ O3DGCErrorCode DynamicVectorDecoder::IQuantize(Real * const floatArray,
+ unsigned long numFloatArray,
+ unsigned long dimFloatArray,
+ unsigned long stride,
+ const Real * const minFloatArray,
+ const Real * const maxFloatArray,
+ unsigned long nQBits)
+ {
+ const unsigned long size = numFloatArray * dimFloatArray;
+ Real r;
+ if (m_maxNumVectors < size)
+ {
+ delete [] m_quantVectors;
+ m_maxNumVectors = size;
+ m_quantVectors = new long [m_maxNumVectors];
+ }
+ Real idelta;
+ for(unsigned long d = 0; d < dimFloatArray; ++d)
+ {
+ r = maxFloatArray[d] - minFloatArray[d];
+ if (r > 0.0f)
+ {
+ idelta = (float)(r) / ((1 << nQBits) - 1);
+ }
+ else
+ {
+ idelta = 1.0f;
+ }
+ for(unsigned long v = 0; v < numFloatArray; ++v)
+ {
+ floatArray[v * stride + d] = m_quantVectors[v + d * numFloatArray] * idelta + minFloatArray[d];
+ }
+ }
+ return O3DGC_OK;
+ }
+}