e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup imbuf
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*/
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#include "oiio/openimageio_support.hh"
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#include "IMB_colormanagement.h"
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#include "IMB_filetype.h"
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#include "IMB_imbuf_types.h"
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OIIO_NAMESPACE_USING
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using namespace blender::imbuf;
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extern "C" {
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bool imb_is_a_dpx(const uchar *mem, size_t size)
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{
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return imb_oiio_check(mem, size, "dpx");
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}
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ImBuf *imb_load_dpx(const uchar *mem, size_t size, int flags, char colorspace[IM_MAX_SPACE])
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{
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ImageSpec config, spec;
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ReadContext ctx{mem, size, "dpx", IMB_FTYPE_DPX, flags};
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ctx.use_colorspace_role = COLOR_ROLE_DEFAULT_FLOAT;
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ImBuf *ibuf = imb_oiio_read(ctx, config, colorspace, spec);
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if (ibuf) {
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if (flags & IB_alphamode_detect) {
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ibuf->flags |= IB_alphamode_premul;
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}
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}
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return ibuf;
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}
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bool imb_save_dpx(ImBuf *ibuf, const char *filepath, int flags)
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{
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int bits_per_sample = 8;
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if (ibuf->foptions.flag & CINEON_10BIT) {
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bits_per_sample = 10;
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}
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else if (ibuf->foptions.flag & CINEON_12BIT) {
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bits_per_sample = 12;
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}
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else if (ibuf->foptions.flag & CINEON_16BIT) {
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bits_per_sample = 16;
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}
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const int file_channels = ibuf->planes >> 3;
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const TypeDesc data_format = bits_per_sample == 8 ? TypeDesc::UINT8 : TypeDesc::UINT16;
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WriteContext ctx = imb_create_write_context("dpx", ibuf, flags);
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ImageSpec file_spec = imb_create_write_spec(ctx, file_channels, data_format);
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const float max_value = powf(2, bits_per_sample) - 1.0f;
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file_spec.attribute("oiio:BitsPerSample", bits_per_sample);
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file_spec.attribute("dpx:WhiteLevel", 685.0f / 1023.0f * max_value);
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file_spec.attribute("dpx:BlackLevel", 95.0f / 1023.0f * max_value);
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file_spec.attribute("dpx:HighData", max_value);
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file_spec.attribute("dpx:LowData", 0);
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file_spec.attribute("dpx:LowQuantity", 0.0f);
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if (ibuf->foptions.flag & CINEON_LOG) {
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/* VERIFY: This matches previous code but seems odd. Needs a comment if confirmed. */
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file_spec.attribute("dpx:Transfer", "Printing density");
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file_spec.attribute("dpx:HighQuantity", 2.048f);
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}
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else {
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file_spec.attribute("dpx:Transfer", "Linear");
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file_spec.attribute("dpx:HighQuantity", max_value);
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}
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if (ELEM(bits_per_sample, 8, 16)) {
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file_spec.attribute("dpx:Packing", "Packed");
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}
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else {
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file_spec.attribute("dpx:Packing", "Filled, method A");
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}
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return imb_oiio_write(ctx, filepath, file_spec);
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}
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}
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