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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2011, Blender Foundation.
*/
#include "COM_ImageOperation.h"
#include "BKE_image.h"
#include "BKE_scene.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "DNA_image_types.h"
#include "IMB_colormanagement.h"
#include "IMB_imbuf.h"
#include "IMB_imbuf_types.h"
#include "RE_pipeline.h"
#include "RE_texture.h"
BaseImageOperation::BaseImageOperation()
{
this->m_image = nullptr;
this->m_buffer = nullptr;
this->m_imageFloatBuffer = nullptr;
this->m_imageByteBuffer = nullptr;
this->m_imageUser = nullptr;
this->m_imagewidth = 0;
this->m_imageheight = 0;
this->m_framenumber = 0;
this->m_depthBuffer = nullptr;
this->m_numberOfChannels = 0;
this->m_rd = nullptr;
this->m_viewName = nullptr;
}
ImageOperation::ImageOperation() : BaseImageOperation()
{
this->addOutputSocket(DataType::Color);
}
ImageAlphaOperation::ImageAlphaOperation() : BaseImageOperation()
{
this->addOutputSocket(DataType::Value);
}
ImageDepthOperation::ImageDepthOperation() : BaseImageOperation()
{
this->addOutputSocket(DataType::Value);
}
ImBuf *BaseImageOperation::getImBuf()
{
ImBuf *ibuf;
ImageUser iuser = *this->m_imageUser;
if (this->m_image == nullptr) {
return nullptr;
}
/* local changes to the original ImageUser */
if (BKE_image_is_multilayer(this->m_image) == false) {
iuser.multi_index = BKE_scene_multiview_view_id_get(this->m_rd, this->m_viewName);
}
ibuf = BKE_image_acquire_ibuf(this->m_image, &iuser, nullptr);
if (ibuf == nullptr || (ibuf->rect == nullptr && ibuf->rect_float == nullptr)) {
BKE_image_release_ibuf(this->m_image, ibuf, nullptr);
return nullptr;
}
return ibuf;
}
void BaseImageOperation::initExecution()
{
ImBuf *stackbuf = getImBuf();
this->m_buffer = stackbuf;
if (stackbuf) {
this->m_imageFloatBuffer = stackbuf->rect_float;
this->m_imageByteBuffer = stackbuf->rect;
this->m_depthBuffer = stackbuf->zbuf_float;
this->m_imagewidth = stackbuf->x;
this->m_imageheight = stackbuf->y;
this->m_numberOfChannels = stackbuf->channels;
}
}
void BaseImageOperation::deinitExecution()
{
this->m_imageFloatBuffer = nullptr;
this->m_imageByteBuffer = nullptr;
BKE_image_release_ibuf(this->m_image, this->m_buffer, nullptr);
}
void BaseImageOperation::determineResolution(unsigned int resolution[2],
unsigned int /*preferredResolution*/[2])
{
ImBuf *stackbuf = getImBuf();
resolution[0] = 0;
resolution[1] = 0;
if (stackbuf) {
resolution[0] = stackbuf->x;
resolution[1] = stackbuf->y;
}
BKE_image_release_ibuf(this->m_image, stackbuf, nullptr);
}
static void sampleImageAtLocation(
ImBuf *ibuf, float x, float y, PixelSampler sampler, bool make_linear_rgb, float color[4])
{
if (ibuf->rect_float) {
switch (sampler) {
case PixelSampler::Nearest:
nearest_interpolation_color(ibuf, nullptr, color, x, y);
break;
case PixelSampler::Bilinear:
bilinear_interpolation_color(ibuf, nullptr, color, x, y);
break;
case PixelSampler::Bicubic:
bicubic_interpolation_color(ibuf, nullptr, color, x, y);
break;
}
}
else {
unsigned char byte_color[4];
switch (sampler) {
case PixelSampler::Nearest:
nearest_interpolation_color(ibuf, byte_color, nullptr, x, y);
break;
case PixelSampler::Bilinear:
bilinear_interpolation_color(ibuf, byte_color, nullptr, x, y);
break;
case PixelSampler::Bicubic:
bicubic_interpolation_color(ibuf, byte_color, nullptr, x, y);
break;
}
rgba_uchar_to_float(color, byte_color);
if (make_linear_rgb) {
IMB_colormanagement_colorspace_to_scene_linear_v4(color, false, ibuf->rect_colorspace);
}
}
}
void ImageOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
{
int ix = x, iy = y;
if (this->m_imageFloatBuffer == nullptr && this->m_imageByteBuffer == nullptr) {
zero_v4(output);
}
else if (ix < 0 || iy < 0 || ix >= this->m_buffer->x || iy >= this->m_buffer->y) {
zero_v4(output);
}
else {
sampleImageAtLocation(this->m_buffer, x, y, sampler, true, output);
}
}
void ImageAlphaOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float tempcolor[4];
if (this->m_imageFloatBuffer == nullptr && this->m_imageByteBuffer == nullptr) {
output[0] = 0.0f;
}
else {
tempcolor[3] = 1.0f;
sampleImageAtLocation(this->m_buffer, x, y, sampler, false, tempcolor);
output[0] = tempcolor[3];
}
}
void ImageDepthOperation::executePixelSampled(float output[4],
float x,
float y,
PixelSampler /*sampler*/)
{
if (this->m_depthBuffer == nullptr) {
output[0] = 0.0f;
}
else {
if (x < 0 || y < 0 || x >= this->getWidth() || y >= this->getHeight()) {
output[0] = 0.0f;
}
else {
int offset = y * this->m_width + x;
output[0] = this->m_depthBuffer[offset];
}
}
}
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