Cleanup: Change extension .cpp to .cc

1 files changed, 161 insertions, 0 deletions

diff --git a/source/blender/compositor/operations/COM_PreviewOperation.cc b/source/blender/compositor/operations/COM_PreviewOperation.cc
new file mode 100644
index 00000000000..063421f6525
--- /dev/null
+++ b/source/blender/compositor/operations/COM_PreviewOperation.cc
@@ -0,0 +1,161 @@
+/*
+ * 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_PreviewOperation.h"
+#include "BKE_image.h"
+#include "BLI_listbase.h"
+#include "BLI_math.h"
+#include "BLI_math_color.h"
+#include "BLI_utildefines.h"
+#include "COM_defines.h"
+#include "MEM_guardedalloc.h"
+#include "PIL_time.h"
+#include "WM_api.h"
+#include "WM_types.h"
+
+#include "BKE_node.h"
+#include "IMB_colormanagement.h"
+#include "IMB_imbuf.h"
+#include "IMB_imbuf_types.h"
+
+PreviewOperation::PreviewOperation(const ColorManagedViewSettings *viewSettings,
+                                   const ColorManagedDisplaySettings *displaySettings)
+
+{
+  this->addInputSocket(COM_DT_COLOR, COM_SC_NO_RESIZE);
+  this->m_preview = nullptr;
+  this->m_outputBuffer = nullptr;
+  this->m_input = nullptr;
+  this->m_divider = 1.0f;
+  this->m_viewSettings = viewSettings;
+  this->m_displaySettings = displaySettings;
+}
+
+void PreviewOperation::verifyPreview(bNodeInstanceHash *previews, bNodeInstanceKey key)
+{
+  /* Size (0, 0) ensures the preview rect is not allocated in advance,
+   * this is set later in initExecution once the resolution is determined.
+   */
+  this->m_preview = BKE_node_preview_verify(previews, key, 0, 0, true);
+}
+
+void PreviewOperation::initExecution()
+{
+  this->m_input = getInputSocketReader(0);
+
+  if (this->getWidth() == (unsigned int)this->m_preview->xsize &&
+      this->getHeight() == (unsigned int)this->m_preview->ysize) {
+    this->m_outputBuffer = this->m_preview->rect;
+  }
+
+  if (this->m_outputBuffer == nullptr) {
+    this->m_outputBuffer = (unsigned char *)MEM_callocN(
+        sizeof(unsigned char) * 4 * getWidth() * getHeight(), "PreviewOperation");
+    if (this->m_preview->rect) {
+      MEM_freeN(this->m_preview->rect);
+    }
+    this->m_preview->xsize = getWidth();
+    this->m_preview->ysize = getHeight();
+    this->m_preview->rect = this->m_outputBuffer;
+  }
+}
+
+void PreviewOperation::deinitExecution()
+{
+  this->m_outputBuffer = nullptr;
+  this->m_input = nullptr;
+}
+
+void PreviewOperation::executeRegion(rcti *rect, unsigned int /*tileNumber*/)
+{
+  int offset;
+  float color[4];
+  struct ColormanageProcessor *cm_processor;
+
+  cm_processor = IMB_colormanagement_display_processor_new(this->m_viewSettings,
+                                                           this->m_displaySettings);
+
+  for (int y = rect->ymin; y < rect->ymax; y++) {
+    offset = (y * getWidth() + rect->xmin) * 4;
+    for (int x = rect->xmin; x < rect->xmax; x++) {
+      float rx = floor(x / this->m_divider);
+      float ry = floor(y / this->m_divider);
+
+      color[0] = 0.0f;
+      color[1] = 0.0f;
+      color[2] = 0.0f;
+      color[3] = 1.0f;
+      this->m_input->readSampled(color, rx, ry, COM_PS_NEAREST);
+      IMB_colormanagement_processor_apply_v4(cm_processor, color);
+      rgba_float_to_uchar(this->m_outputBuffer + offset, color);
+      offset += 4;
+    }
+  }
+
+  IMB_colormanagement_processor_free(cm_processor);
+}
+bool PreviewOperation::determineDependingAreaOfInterest(rcti *input,
+                                                        ReadBufferOperation *readOperation,
+                                                        rcti *output)
+{
+  rcti newInput;
+
+  newInput.xmin = input->xmin / this->m_divider;
+  newInput.xmax = input->xmax / this->m_divider;
+  newInput.ymin = input->ymin / this->m_divider;
+  newInput.ymax = input->ymax / this->m_divider;
+
+  return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+}
+void PreviewOperation::determineResolution(unsigned int resolution[2],
+                                           unsigned int preferredResolution[2])
+{
+  NodeOperation::determineResolution(resolution, preferredResolution);
+
+  /* If resolution is 0 there are two possible scenarios:
+   * - Either node is not connected at all
+   * - It is connected to input which doesn't have own resolution (i.e. color input).
+   *
+   * In the former case we rely on the execution system to not evaluate this node.
+   *
+   * For the latter case we use 1 pixel preview, so that it's possible to see preview color in the
+   * preview. This is how final F12 render will behave (flood-fill final frame with the color).
+   *
+   * Having things consistent in terms that node preview is scaled down F12 render is a very
+   * natural thing to do. */
+  int width = max_ii(1, resolution[0]);
+  int height = max_ii(1, resolution[1]);
+
+  this->m_divider = 0.0f;
+  if (width > height) {
+    this->m_divider = (float)COM_PREVIEW_SIZE / (width);
+  }
+  else {
+    this->m_divider = (float)COM_PREVIEW_SIZE / (height);
+  }
+  width = width * this->m_divider;
+  height = height * this->m_divider;
+
+  resolution[0] = width;
+  resolution[1] = height;
+}
+
+CompositorPriority PreviewOperation::getRenderPriority() const
+{
+  return COM_PRIORITY_LOW;
+}