/src/core/AllocationOp.cpp
http://github.com/imageworks/OpenColorIO · C++ · 128 lines · 84 code · 15 blank · 29 comment · 16 complexity · 80fc5543c02a03b9b2342c748a9365ff MD5 · raw file
- /*
- Copyright (c) 2003-2010 Sony Pictures Imageworks Inc., et al.
- All Rights Reserved.
- Redistribution and use 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 Sony Pictures Imageworks nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
- 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.
- */
- #include "AllocationOp.h"
- #include "LogOps.h"
- #include "MatrixOps.h"
- #include "Op.h"
- #include <OpenColorIO/OpenColorIO.h>
- OCIO_NAMESPACE_ENTER
- {
- void CreateAllocationOps(OpRcPtrVec & ops,
- const AllocationData & data,
- TransformDirection dir)
- {
- if(data.allocation == ALLOCATION_UNIFORM)
- {
- float oldmin[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
- float oldmax[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
- float newmin[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
- float newmax[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
-
- if(data.vars.size() >= 2)
- {
- for(int i=0; i<3; ++i)
- {
- oldmin[i] = data.vars[0];
- oldmax[i] = data.vars[1];
- }
- }
-
- CreateFitOp(ops,
- oldmin, oldmax,
- newmin, newmax,
- dir);
- }
- else if(data.allocation == ALLOCATION_LG2)
- {
- float oldmin[4] = { -10.0f, -10.0f, -10.0f, 0.0f };
- float oldmax[4] = { 6.0f, 6.0f, 6.0f, 1.0f };
- float newmin[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
- float newmax[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
-
- if(data.vars.size() >= 2)
- {
- for(int i=0; i<3; ++i)
- {
- oldmin[i] = data.vars[0];
- oldmax[i] = data.vars[1];
- }
- }
-
-
- // Log Settings
- // output = k * log(mx+b, base) + kb
-
- float k[3] = { 1.0f, 1.0f, 1.0f };
- float m[3] = { 1.0f, 1.0f, 1.0f };
- float b[3] = { 0.0f, 0.0f, 0.0f };
- float base[3] = { 2.0f, 2.0f, 2.0f };
- float kb[3] = { 0.0f, 0.0f, 0.0f };
-
- if(data.vars.size() >= 3)
- {
- for(int i=0; i<3; ++i)
- {
- b[i] = data.vars[2];
- }
- }
-
- if(dir == TRANSFORM_DIR_FORWARD)
- {
- CreateLogOp(ops, k, m, b, base, kb, dir);
-
- CreateFitOp(ops,
- oldmin, oldmax,
- newmin, newmax,
- dir);
- }
- else if(dir == TRANSFORM_DIR_INVERSE)
- {
- CreateFitOp(ops,
- oldmin, oldmax,
- newmin, newmax,
- dir);
-
- CreateLogOp(ops, k, m, b, base, kb, dir);
- }
- else
- {
- throw Exception("Cannot BuildAllocationOps, unspecified transform direction.");
- }
- }
- else
- {
- throw Exception("Unsupported Allocation Type.");
- }
- }
-
- }
- OCIO_NAMESPACE_EXIT