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Diffstat (limited to 'intern/cycles/util/image.h')
-rw-r--r-- | intern/cycles/util/image.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/intern/cycles/util/image.h b/intern/cycles/util/image.h new file mode 100644 index 00000000000..69fc3a50c1d --- /dev/null +++ b/intern/cycles/util/image.h @@ -0,0 +1,98 @@ +/* + * Copyright 2011-2013 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __UTIL_IMAGE_H__ +# define __UTIL_IMAGE_H__ + +/* OpenImageIO is used for all image file reading and writing. */ + +# include <OpenImageIO/imageio.h> + +# include "util/half.h" +# include "util/vector.h" + +CCL_NAMESPACE_BEGIN + +OIIO_NAMESPACE_USING + +template<typename T> +void util_image_resize_pixels(const vector<T> &input_pixels, + const size_t input_width, + const size_t input_height, + const size_t input_depth, + const size_t components, + vector<T> *output_pixels, + size_t *output_width, + size_t *output_height, + size_t *output_depth); + +/* Cast input pixel from unknown storage to float. */ +template<typename T> inline float util_image_cast_to_float(T value); + +template<> inline float util_image_cast_to_float(float value) +{ + return value; +} +template<> inline float util_image_cast_to_float(uchar value) +{ + return (float)value / 255.0f; +} +template<> inline float util_image_cast_to_float(uint16_t value) +{ + return (float)value / 65535.0f; +} +template<> inline float util_image_cast_to_float(half value) +{ + return half_to_float_image(value); +} + +/* Cast float value to output pixel type. */ +template<typename T> inline T util_image_cast_from_float(float value); + +template<> inline float util_image_cast_from_float(float value) +{ + return value; +} +template<> inline uchar util_image_cast_from_float(float value) +{ + if (value < 0.0f) { + return 0; + } + else if (value > (1.0f - 0.5f / 255.0f)) { + return 255; + } + return (uchar)((255.0f * value) + 0.5f); +} +template<> inline uint16_t util_image_cast_from_float(float value) +{ + if (value < 0.0f) { + return 0; + } + else if (value > (1.0f - 0.5f / 65535.0f)) { + return 65535; + } + return (uint16_t)((65535.0f * value) + 0.5f); +} +template<> inline half util_image_cast_from_float(float value) +{ + return float_to_half_image(value); +} + +CCL_NAMESPACE_END + +#endif /* __UTIL_IMAGE_H__ */ + +#include "util/image_impl.h" |