forked from bartvdbraak/blender
cf8cddf07a
This commit implement's OCIO's Looks idea which is about applying some color correction on the buffer before it get's affected by a display transform. This is mainly used to modify images in an artistics way. Currently we've got looks generated from film response curves for all sorts of cameras. Patch by both of me and Brecht.
433 lines
11 KiB
C++
433 lines
11 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2012 Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Brecht van Lommel
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#include <string.h>
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#include "MEM_guardedalloc.h"
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#include "BLI_math_color.h"
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#include "ocio_impl.h"
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#define CONFIG_DEFAULT ((OCIO_ConstConfigRcPtr*)1)
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#define PROCESSOR_LINEAR_TO_SRGB ((OCIO_ConstProcessorRcPtr*)1)
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#define PROCESSOR_SRGB_TO_LINEAR ((OCIO_ConstProcessorRcPtr*)2)
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#define PROCESSOR_UNKNOWN ((OCIO_ConstProcessorRcPtr*)3)
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#define COLORSPACE_LINEAR ((OCIO_ConstColorSpaceRcPtr*)1)
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#define COLORSPACE_SRGB ((OCIO_ConstColorSpaceRcPtr*)2)
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typedef struct OCIO_PackedImageDescription {
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float *data;
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long width;
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long height;
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long numChannels;
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long chanStrideBytes;
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long xStrideBytes;
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long yStrideBytes;
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} OCIO_PackedImageDescription;
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OCIO_ConstConfigRcPtr *FallbackImpl::getCurrentConfig(void)
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{
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return CONFIG_DEFAULT;
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}
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void FallbackImpl::setCurrentConfig(const OCIO_ConstConfigRcPtr * /*config*/)
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{
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}
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OCIO_ConstConfigRcPtr *FallbackImpl::configCreateFromEnv(void)
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{
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return CONFIG_DEFAULT;
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}
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OCIO_ConstConfigRcPtr *FallbackImpl::configCreateFromFile(const char * /*filename*/)
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{
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return CONFIG_DEFAULT;
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}
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void FallbackImpl::configRelease(OCIO_ConstConfigRcPtr * /*config*/)
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{
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}
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int FallbackImpl::configGetNumColorSpaces(OCIO_ConstConfigRcPtr * /*config*/)
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{
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return 2;
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}
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const char *FallbackImpl::configGetColorSpaceNameByIndex(OCIO_ConstConfigRcPtr * /*config*/, int index)
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{
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if (index == 0)
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return "Linear";
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else if (index == 1)
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return "sRGB";
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return NULL;
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}
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OCIO_ConstColorSpaceRcPtr *FallbackImpl::configGetColorSpace(OCIO_ConstConfigRcPtr * /*config*/, const char *name)
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{
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if (strcmp(name, "scene_linear") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "color_picking") == 0)
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return COLORSPACE_SRGB;
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else if (strcmp(name, "texture_paint") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "default_byte") == 0)
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return COLORSPACE_SRGB;
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else if (strcmp(name, "default_float") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "default_sequencer") == 0)
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return COLORSPACE_SRGB;
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else if (strcmp(name, "Linear") == 0)
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return COLORSPACE_LINEAR;
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else if (strcmp(name, "sRGB") == 0)
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return COLORSPACE_SRGB;
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return NULL;
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}
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int FallbackImpl::configGetIndexForColorSpace(OCIO_ConstConfigRcPtr *config, const char *name)
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{
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OCIO_ConstColorSpaceRcPtr *cs = configGetColorSpace(config, name);
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if (cs == COLORSPACE_LINEAR)
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return 0;
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else if (cs == COLORSPACE_SRGB)
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return 1;
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return -1;
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}
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const char *FallbackImpl::configGetDefaultDisplay(OCIO_ConstConfigRcPtr * /*config*/)
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{
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return "sRGB";
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}
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int FallbackImpl::configGetNumDisplays(OCIO_ConstConfigRcPtr * /*config*/)
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{
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return 1;
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}
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const char *FallbackImpl::configGetDisplay(OCIO_ConstConfigRcPtr * /*config*/, int index)
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{
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if (index == 0)
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return "sRGB";
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return NULL;
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}
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const char *FallbackImpl::configGetDefaultView(OCIO_ConstConfigRcPtr * /*config*/, const char * /*display*/)
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{
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return "Default";
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}
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int FallbackImpl::configGetNumViews(OCIO_ConstConfigRcPtr * /*config*/, const char * /*display*/)
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{
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return 1;
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}
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const char *FallbackImpl::configGetView(OCIO_ConstConfigRcPtr * /*config*/, const char * /*display*/, int index)
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{
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if (index == 0)
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return "Default";
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return NULL;
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}
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const char *FallbackImpl::configGetDisplayColorSpaceName(OCIO_ConstConfigRcPtr * /*config*/, const char * /*display*/, const char * /*view*/)
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{
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return "sRGB";
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}
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int FallbackImpl::configGetNumLooks(OCIO_ConstConfigRcPtr * /*config*/)
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{
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return 0;
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}
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const char *FallbackImpl::configGetLookNameByIndex(OCIO_ConstConfigRcPtr * /*config*/, int /*index*/)
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{
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return "";
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}
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OCIO_ConstLookRcPtr *FallbackImpl::configGetLook(OCIO_ConstConfigRcPtr * /*config*/, const char * /*name*/)
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{
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return NULL;
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}
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const char *FallbackImpl::lookGetProcessSpace(OCIO_ConstLookRcPtr *look)
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{
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return NULL;
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}
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void FallbackImpl::lookRelease(OCIO_ConstLookRcPtr * /*look*/)
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{
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}
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int FallbackImpl::colorSpaceIsInvertible(OCIO_ConstColorSpaceRcPtr * /*cs*/)
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{
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return 1;
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}
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int FallbackImpl::colorSpaceIsData(OCIO_ConstColorSpaceRcPtr * /*cs*/)
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{
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return 0;
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}
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void FallbackImpl::colorSpaceRelease(OCIO_ConstColorSpaceRcPtr * /*cs*/)
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{
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}
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OCIO_ConstProcessorRcPtr *FallbackImpl::configGetProcessorWithNames(OCIO_ConstConfigRcPtr *config, const char *srcName, const char *dstName)
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{
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OCIO_ConstColorSpaceRcPtr *cs_src = configGetColorSpace(config, srcName);
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OCIO_ConstColorSpaceRcPtr *cs_dst = configGetColorSpace(config, dstName);
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if (cs_src == COLORSPACE_LINEAR && cs_dst == COLORSPACE_SRGB)
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return PROCESSOR_LINEAR_TO_SRGB;
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else if (cs_src == COLORSPACE_SRGB && cs_dst == COLORSPACE_LINEAR)
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return PROCESSOR_SRGB_TO_LINEAR;
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return 0;
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}
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OCIO_ConstProcessorRcPtr *FallbackImpl::configGetProcessor(OCIO_ConstConfigRcPtr * /*config*/, OCIO_ConstTransformRcPtr *tfm)
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{
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return (OCIO_ConstProcessorRcPtr*)tfm;
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}
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void FallbackImpl::processorApply(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img)
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{
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/* OCIO_TODO stride not respected, channels must be 3 or 4 */
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OCIO_PackedImageDescription *desc = (OCIO_PackedImageDescription*)img;
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int channels = desc->numChannels;
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float *pixels = desc->data;
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int width = desc->width;
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int height = desc->height;
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int x, y;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++) {
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float *pixel = pixels + channels * (y * width + x);
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if (channels == 4)
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processorApplyRGBA(processor, pixel);
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else if (channels == 3)
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processorApplyRGB(processor, pixel);
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}
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}
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}
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void FallbackImpl::processorApply_predivide(OCIO_ConstProcessorRcPtr *processor, OCIO_PackedImageDesc *img)
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{
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/* OCIO_TODO stride not respected, channels must be 3 or 4 */
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OCIO_PackedImageDescription *desc = (OCIO_PackedImageDescription*)img;
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int channels = desc->numChannels;
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float *pixels = desc->data;
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int width = desc->width;
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int height = desc->height;
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int x, y;
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for (y = 0; y < height; y++) {
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for (x = 0; x < width; x++) {
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float *pixel = pixels + channels * (y * width + x);
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if (channels == 4)
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processorApplyRGBA_predivide(processor, pixel);
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else if (channels == 3)
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processorApplyRGB(processor, pixel);
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}
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}
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}
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void FallbackImpl::processorApplyRGB(OCIO_ConstProcessorRcPtr *processor, float *pixel)
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{
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if (processor == PROCESSOR_LINEAR_TO_SRGB)
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linearrgb_to_srgb_v3_v3(pixel, pixel);
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else if (processor == PROCESSOR_SRGB_TO_LINEAR)
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srgb_to_linearrgb_v3_v3(pixel, pixel);
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}
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void FallbackImpl::processorApplyRGBA(OCIO_ConstProcessorRcPtr *processor, float *pixel)
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{
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if (processor == PROCESSOR_LINEAR_TO_SRGB)
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linearrgb_to_srgb_v4(pixel, pixel);
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else if (processor == PROCESSOR_SRGB_TO_LINEAR)
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srgb_to_linearrgb_v4(pixel, pixel);
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}
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void FallbackImpl::processorApplyRGBA_predivide(OCIO_ConstProcessorRcPtr *processor, float *pixel)
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{
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if (pixel[3] == 1.0f || pixel[3] == 0.0f) {
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processorApplyRGBA(processor, pixel);
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}
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else {
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float alpha, inv_alpha;
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alpha = pixel[3];
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inv_alpha = 1.0f / alpha;
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pixel[0] *= inv_alpha;
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pixel[1] *= inv_alpha;
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pixel[2] *= inv_alpha;
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processorApplyRGBA(processor, pixel);
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pixel[0] *= alpha;
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pixel[1] *= alpha;
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pixel[2] *= alpha;
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}
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}
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void FallbackImpl::processorRelease(OCIO_ConstProcessorRcPtr * /*p*/)
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{
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}
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const char *FallbackImpl::colorSpaceGetName(OCIO_ConstColorSpaceRcPtr *cs)
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{
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if (cs == COLORSPACE_LINEAR)
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return "Linear";
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else if (cs == COLORSPACE_SRGB)
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return "sRGB";
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return NULL;
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}
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const char *FallbackImpl::colorSpaceGetDescription(OCIO_ConstColorSpaceRcPtr * /*cs*/)
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{
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return "";
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}
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const char *FallbackImpl::colorSpaceGetFamily(OCIO_ConstColorSpaceRcPtr * /*cs*/)
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{
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return "";
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}
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OCIO_DisplayTransformRcPtr *FallbackImpl::createDisplayTransform(void)
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{
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return (OCIO_DisplayTransformRcPtr*)PROCESSOR_LINEAR_TO_SRGB;
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}
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void FallbackImpl::displayTransformSetInputColorSpaceName(OCIO_DisplayTransformRcPtr * /*dt*/, const char * /*name*/)
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{
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}
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void FallbackImpl::displayTransformSetDisplay(OCIO_DisplayTransformRcPtr * /*dt*/, const char * /*name*/)
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{
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}
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void FallbackImpl::displayTransformSetView(OCIO_DisplayTransformRcPtr * /*dt*/, const char * /*name*/)
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{
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}
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void FallbackImpl::displayTransformSetDisplayCC(OCIO_DisplayTransformRcPtr * /*dt*/, OCIO_ConstTransformRcPtr * /*et*/)
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{
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}
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void FallbackImpl::displayTransformSetLinearCC(OCIO_DisplayTransformRcPtr * /*dt*/, OCIO_ConstTransformRcPtr * /*et*/)
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{
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}
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void FallbackImpl::displayTransformSetLooksOverride(OCIO_DisplayTransformRcPtr * /*dt*/, const char * /*looks*/)
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{
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}
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void FallbackImpl::displayTransformSetLooksOverrideEnabled(OCIO_DisplayTransformRcPtr * /*dt*/, bool /*enabled*/)
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{
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}
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void FallbackImpl::displayTransformRelease(OCIO_DisplayTransformRcPtr * /*dt*/)
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{
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}
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OCIO_PackedImageDesc *FallbackImpl::createOCIO_PackedImageDesc(float *data, long width, long height, long numChannels,
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long chanStrideBytes, long xStrideBytes, long yStrideBytes)
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{
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OCIO_PackedImageDescription *desc = (OCIO_PackedImageDescription*)MEM_callocN(sizeof(OCIO_PackedImageDescription), "OCIO_PackedImageDescription");
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desc->data = data;
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desc->width = width;
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desc->height = height;
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desc->numChannels = numChannels;
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desc->chanStrideBytes = chanStrideBytes;
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desc->xStrideBytes = xStrideBytes;
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desc->yStrideBytes = yStrideBytes;
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return (OCIO_PackedImageDesc*)desc;
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}
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void FallbackImpl::OCIO_PackedImageDescRelease(OCIO_PackedImageDesc* id)
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{
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MEM_freeN(id);
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}
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OCIO_ExponentTransformRcPtr *FallbackImpl::createExponentTransform(void)
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{
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return (OCIO_ExponentTransformRcPtr*)PROCESSOR_UNKNOWN;
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}
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void FallbackImpl::exponentTransformSetValue(OCIO_ExponentTransformRcPtr * /*et*/, const float * /*exponent*/)
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{
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}
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void FallbackImpl::exponentTransformRelease(OCIO_ExponentTransformRcPtr * /*et*/)
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{
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}
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OCIO_MatrixTransformRcPtr *FallbackImpl::createMatrixTransform(void)
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{
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return (OCIO_MatrixTransformRcPtr*)PROCESSOR_UNKNOWN;
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}
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void FallbackImpl::matrixTransformSetValue(OCIO_MatrixTransformRcPtr * /*mt*/, const float * /*m44*/, const float * /*offset4*/)
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{
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}
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void FallbackImpl::matrixTransformRelease(OCIO_MatrixTransformRcPtr * /*mt*/)
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{
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}
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void FallbackImpl::matrixTransformScale(float * /*m44*/, float * /*offset44*/, const float * /*scale4*/)
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{
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}
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bool FallbackImpl::supportGLSLDraw(void)
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{
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return false;
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}
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bool FallbackImpl::setupGLSLDraw(struct OCIO_GLSLDrawState ** /*state_r*/, OCIO_ConstProcessorRcPtr * /*processor*/, bool /*predivide*/)
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{
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return false;
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}
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void FallbackImpl::finishGLSLDraw(OCIO_GLSLDrawState * /*state*/)
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{
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}
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void FallbackImpl::freeGLState(struct OCIO_GLSLDrawState * /*state_r*/)
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{
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}
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