Brecht Van Lommel
9cfc7967dd
* Replace license text in headers with SPDX identifiers. * Remove specific license info from outdated readme.txt, instead leave details to the source files. * Add list of SPDX license identifiers used, and corresponding license texts. * Update copyright dates while we're at it. Ref D14069, T95597
86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#ifndef __UTIL_IMAGE_H__
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# define __UTIL_IMAGE_H__
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/* OpenImageIO is used for all image file reading and writing. */
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# include <OpenImageIO/imageio.h>
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# include "util/half.h"
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# include "util/vector.h"
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CCL_NAMESPACE_BEGIN
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OIIO_NAMESPACE_USING
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template<typename T>
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void util_image_resize_pixels(const vector<T> &input_pixels,
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const size_t input_width,
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const size_t input_height,
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const size_t input_depth,
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const size_t components,
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vector<T> *output_pixels,
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size_t *output_width,
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size_t *output_height,
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size_t *output_depth);
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/* Cast input pixel from unknown storage to float. */
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template<typename T> inline float util_image_cast_to_float(T value);
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template<> inline float util_image_cast_to_float(float value)
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{
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return value;
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}
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template<> inline float util_image_cast_to_float(uchar value)
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{
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return (float)value / 255.0f;
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}
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template<> inline float util_image_cast_to_float(uint16_t value)
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{
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return (float)value / 65535.0f;
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}
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template<> inline float util_image_cast_to_float(half value)
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{
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return half_to_float_image(value);
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}
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/* Cast float value to output pixel type. */
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template<typename T> inline T util_image_cast_from_float(float value);
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template<> inline float util_image_cast_from_float(float value)
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{
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return value;
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}
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template<> inline uchar util_image_cast_from_float(float value)
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{
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if (value < 0.0f) {
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return 0;
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}
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else if (value > (1.0f - 0.5f / 255.0f)) {
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return 255;
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}
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return (uchar)((255.0f * value) + 0.5f);
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}
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template<> inline uint16_t util_image_cast_from_float(float value)
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{
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if (value < 0.0f) {
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return 0;
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}
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else if (value > (1.0f - 0.5f / 65535.0f)) {
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return 65535;
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}
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return (uint16_t)((65535.0f * value) + 0.5f);
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}
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template<> inline half util_image_cast_from_float(float value)
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{
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return float_to_half_image(value);
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}
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CCL_NAMESPACE_END
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#endif /* __UTIL_IMAGE_H__ */
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#include "util/image_impl.h"
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