288 lines
6.5 KiB
C++
288 lines
6.5 KiB
C++
/*
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* Copyright 2011, Blender Foundation.
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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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* Contributor: Peter Schlaile
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* Jeroen Bakker
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* Monique Dewanchand
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*/
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#include "MEM_guardedalloc.h"
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#include "COM_InpaintOperation.h"
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#include "COM_OpenCLDevice.h"
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#include "BLI_math.h"
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#define ASSERT_XY_RANGE(x, y) \
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BLI_assert(x >= 0 && x < this->getWidth() && \
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y >= 0 && y < this->getHeight())
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// Inpaint (simple convolve using average of known pixels)
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InpaintSimpleOperation::InpaintSimpleOperation() : NodeOperation()
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{
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this->addInputSocket(COM_DT_COLOR);
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this->addOutputSocket(COM_DT_COLOR);
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this->setComplex(true);
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this->m_inputImageProgram = NULL;
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this->m_pixelorder = NULL;
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this->m_manhatten_distance = NULL;
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this->m_cached_buffer = NULL;
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this->m_cached_buffer_ready = false;
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}
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void InpaintSimpleOperation::initExecution()
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{
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this->m_inputImageProgram = this->getInputSocketReader(0);
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this->m_pixelorder = NULL;
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this->m_manhatten_distance = NULL;
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this->m_cached_buffer = NULL;
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this->m_cached_buffer_ready = false;
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this->initMutex();
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}
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void InpaintSimpleOperation::clamp_xy(int &x, int &y)
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{
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int width = this->getWidth();
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int height = this->getHeight();
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if (x < 0) {
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x = 0;
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}
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else if (x >= width) {
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x = width - 1;
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}
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if (y < 0) {
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y = 0;
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}
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else if (y >= height) {
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y = height - 1;
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}
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}
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float *InpaintSimpleOperation::get_pixel(int x, int y)
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{
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int width = this->getWidth();
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ASSERT_XY_RANGE(x, y);
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return &this->m_cached_buffer[
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y * width * COM_NUMBER_OF_CHANNELS +
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x * COM_NUMBER_OF_CHANNELS];
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}
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int InpaintSimpleOperation::mdist(int x, int y)
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{
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int width = this->getWidth();
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ASSERT_XY_RANGE(x, y);
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return this->m_manhatten_distance[y * width + x];
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}
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bool InpaintSimpleOperation::next_pixel(int &x, int &y, int & curr, int iters)
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{
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int width = this->getWidth();
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if (curr >= this->m_area_size) {
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return false;
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}
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int r = this->m_pixelorder[curr++];
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x = r % width;
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y = r / width;
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if (this->mdist(x, y) > iters) {
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return false;
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}
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return true;
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}
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void InpaintSimpleOperation::calc_manhatten_distance()
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{
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int width = this->getWidth();
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int height = this->getHeight();
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short *m = this->m_manhatten_distance = (short *)MEM_mallocN(sizeof(short) * width * height, __func__);
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int *offsets;
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offsets = (int *)MEM_callocN(sizeof(int) * (width + height + 1), "InpaintSimpleOperation offsets");
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for (int j = 0; j < height; j++) {
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for (int i = 0; i < width; i++) {
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int r = 0;
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/* no need to clamp here */
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if (this->get_pixel(i, j)[3] < 1.0f) {
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r = width + height;
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if (i > 0)
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r = min_ii(r, m[j * width + i - 1] + 1);
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if (j > 0)
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r = min_ii(r, m[(j - 1) * width + i] + 1);
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}
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m[j * width + i] = r;
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}
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}
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for (int j = height - 1; j >= 0; j--) {
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for (int i = width - 1; i >= 0; i--) {
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int r = m[j * width + i];
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if (i + 1 < width)
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r = min_ii(r, m[j * width + i + 1] + 1);
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if (j + 1 < height)
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r = min_ii(r, m[(j + 1) * width + i] + 1);
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m[j * width + i] = r;
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offsets[r]++;
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}
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}
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offsets[0] = 0;
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for (int i = 1; i < width + height + 1; i++) {
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offsets[i] += offsets[i - 1];
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}
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this->m_area_size = offsets[width + height];
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this->m_pixelorder = (int *)MEM_mallocN(sizeof(int) * this->m_area_size, __func__);
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for (int i = 0; i < width * height; i++) {
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if (m[i] > 0) {
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this->m_pixelorder[offsets[m[i] - 1]++] = i;
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}
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}
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MEM_freeN(offsets);
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}
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void InpaintSimpleOperation::pix_step(int x, int y)
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{
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const int d = this->mdist(x, y);
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float pix[3] = {0.0f, 0.0f, 0.0f};
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float pix_divider = 0.0f;
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for (int dx = -1; dx <= 1; dx++) {
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for (int dy = -1; dy <= 1; dy++) {
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/* changing to both != 0 gives dithering artifacts */
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if (dx != 0 || dy != 0) {
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int x_ofs = x + dx;
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int y_ofs = y + dy;
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this->clamp_xy(x_ofs, y_ofs);
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if (this->mdist(x_ofs, y_ofs) < d) {
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float weight;
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if (dx == 0 || dy == 0) {
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weight = 1.0f;
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}
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else {
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weight = M_SQRT1_2; /* 1.0f / sqrt(2) */
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}
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madd_v3_v3fl(pix, this->get_pixel(x_ofs, y_ofs), weight);
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pix_divider += weight;
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}
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}
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}
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}
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float *output = this->get_pixel(x, y);
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if (pix_divider != 0.0f) {
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mul_v3_fl(pix, 1.0f / pix_divider);
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/* use existing pixels alpha to blend into */
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interp_v3_v3v3(output, pix, output, output[3]);
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output[3] = 1.0f;
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}
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}
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void *InpaintSimpleOperation::initializeTileData(rcti *rect)
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{
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if (this->m_cached_buffer_ready) {
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return this->m_cached_buffer;
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}
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lockMutex();
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if (!this->m_cached_buffer_ready) {
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MemoryBuffer *buf = (MemoryBuffer *)this->m_inputImageProgram->initializeTileData(rect);
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this->m_cached_buffer = (float *)MEM_dupallocN(buf->getBuffer());
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this->calc_manhatten_distance();
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int curr = 0;
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int x, y;
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while (this->next_pixel(x, y, curr, this->m_iterations)) {
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this->pix_step(x, y);
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}
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this->m_cached_buffer_ready = true;
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}
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unlockMutex();
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return this->m_cached_buffer;
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}
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void InpaintSimpleOperation::executePixel(float output[4], int x, int y, void *data)
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{
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this->clamp_xy(x, y);
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copy_v4_v4(output, this->get_pixel(x, y));
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}
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void InpaintSimpleOperation::deinitExecution()
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{
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this->m_inputImageProgram = NULL;
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this->deinitMutex();
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if (this->m_cached_buffer) {
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MEM_freeN(this->m_cached_buffer);
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this->m_cached_buffer = NULL;
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}
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if (this->m_pixelorder) {
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MEM_freeN(this->m_pixelorder);
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this->m_pixelorder = NULL;
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}
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if (this->m_manhatten_distance) {
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MEM_freeN(this->m_manhatten_distance);
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this->m_manhatten_distance = NULL;
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}
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this->m_cached_buffer_ready = false;
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}
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bool InpaintSimpleOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
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{
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if (this->m_cached_buffer_ready) {
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return false;
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}
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else {
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rcti newInput;
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newInput.xmax = getWidth();
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newInput.xmin = 0;
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newInput.ymax = getHeight();
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newInput.ymin = 0;
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return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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}
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