/*
  Copyright 2009 Larry Gritz and the other authors and contributors.
  All Rights Reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are
  met:
  * Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.
  * Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
  * Neither the name of the software's owners nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

  (This is the Modified BSD License)
*/

#include "py_oiio.h"

#include <memory>

#include <OpenImageIO/platform.h>


namespace PyOpenImageIO {



py::tuple
ImageBuf_getpixel(const ImageBuf& buf, int x, int y, int z = 0,
                  const std::string& wrapname = "black")
{
    ImageBuf::WrapMode wrap = ImageBuf::WrapMode_from_string(wrapname);
    int nchans              = buf.nchannels();
    float* pixel            = ALLOCA(float, nchans);
    buf.getpixel(x, y, z, pixel, nchans, wrap);
    return C_to_tuple(pixel, nchans);
}



py::tuple
ImageBuf_interppixel(const ImageBuf& buf, float x, float y,
                     const std::string& wrapname = "black")
{
    ImageBuf::WrapMode wrap = ImageBuf::WrapMode_from_string(wrapname);
    int nchans              = buf.nchannels();
    float* pixel            = ALLOCA(float, nchans);
    buf.interppixel(x, y, pixel, wrap);
    return C_to_tuple(pixel, nchans);
}



py::tuple
ImageBuf_interppixel_NDC(const ImageBuf& buf, float x, float y,
                         const std::string& wrapname = "black")
{
    ImageBuf::WrapMode wrap = ImageBuf::WrapMode_from_string(wrapname);
    int nchans              = buf.nchannels();
    float* pixel            = ALLOCA(float, nchans);
    buf.interppixel_NDC(x, y, pixel, wrap);
    return C_to_tuple(pixel, nchans);
}



py::tuple
ImageBuf_interppixel_bicubic(const ImageBuf& buf, float x, float y,
                             const std::string& wrapname = "black")
{
    ImageBuf::WrapMode wrap = ImageBuf::WrapMode_from_string(wrapname);
    int nchans              = buf.nchannels();
    float* pixel            = ALLOCA(float, nchans);
    buf.interppixel_bicubic(x, y, pixel, wrap);
    return C_to_tuple(pixel, nchans);
}



py::tuple
ImageBuf_interppixel_bicubic_NDC(const ImageBuf& buf, float x, float y,
                                 const std::string& wrapname = "black")
{
    ImageBuf::WrapMode wrap = ImageBuf::WrapMode_from_string(wrapname);
    int nchans              = buf.nchannels();
    float* pixel            = ALLOCA(float, nchans);
    buf.interppixel_bicubic_NDC(x, y, pixel, wrap);
    return C_to_tuple(pixel, nchans);
}



void
ImageBuf_setpixel(ImageBuf& buf, int x, int y, int z, py::object p)
{
    std::vector<float> pixel;
    py_to_stdvector(pixel, p);
    if (pixel.size())
        buf.setpixel(x, y, z, &pixel[0], pixel.size());
}

void
ImageBuf_setpixel2(ImageBuf& buf, int x, int y, py::object p)
{
    ImageBuf_setpixel(buf, x, y, 0, p);
}


void
ImageBuf_setpixel1(ImageBuf& buf, int i, py::object p)
{
    std::vector<float> pixel;
    py_to_stdvector(pixel, p);
    if (pixel.size())
        buf.setpixel(i, &pixel[0], pixel.size());
}



py::object
ImageBuf_get_pixels(const ImageBuf& buf, TypeDesc format, ROI roi = ROI::All())
{
    // Allocate our own temp buffer and try to read the image into it.
    // If the read fails, return None.
    if (!roi.defined())
        roi = buf.roi();
    roi.chend = std::min(roi.chend, buf.nchannels());

    size_t size = (size_t)roi.npixels() * roi.nchannels() * format.size();
    std::unique_ptr<char[]> data(new char[size]);
    if (buf.get_pixels(roi, format, &data[0]))
        return make_numpy_array(format, data.release(),
                                buf.spec().depth > 1 ? 4 : 3, roi.nchannels(),
                                roi.width(), roi.height(), roi.depth());
    else
        return py::none();
}



void
ImageBuf_set_deep_value(ImageBuf& buf, int x, int y, int z, int c, int s,
                        float value)
{
    buf.set_deep_value(x, y, z, c, s, value);
}

void
ImageBuf_set_deep_value_uint(ImageBuf& buf, int x, int y, int z, int c, int s,
                             uint32_t value)
{
    buf.set_deep_value(x, y, z, c, s, value);
}



bool
ImageBuf_set_pixels_buffer(ImageBuf& self, ROI roi, py::buffer& buffer)
{
    if (!roi.defined())
        roi = self.roi();
    roi.chend   = std::min(roi.chend, self.nchannels());
    size_t size = (size_t)roi.npixels() * roi.nchannels();
    if (size == 0) {
        return true;  // done
    }
    oiio_bufinfo buf(buffer.request(), roi.nchannels(), roi.width(),
                     roi.height(), roi.depth(), self.spec().depth > 1 ? 3 : 2);
    if (!buf.data || buf.error.size()) {
        self.errorf("set_pixels error: %s",
                    buf.error.size() ? buf.error.c_str() : "unspecified");
        return false;  // failed sanity checks
    }
    if (!buf.data || buf.size != size) {
        self.error(
            "ImageBuf.set_pixels: array size (%d) did not match ROI size w=%d h=%d d=%d ch=%d (total %d)",
            buf.size, roi.width(), roi.height(), roi.depth(), roi.nchannels(),
            size);
        return false;
    }

    py::gil_scoped_release gil;
    return self.set_pixels(roi, buf.format, buf.data, buf.xstride, buf.ystride,
                           buf.zstride);
}



void
declare_imagebuf(py::module& m)
{
    using namespace pybind11::literals;

    py::class_<ImageBuf>(m, "ImageBuf")
        .def(py::init<>())
        .def(py::init<const std::string&>())
        .def(py::init<const std::string&, int, int>())
        .def(py::init<const ImageSpec&>())
        .def("clear", &ImageBuf::clear)
        .def(
            "reset",
            [](ImageBuf& self, const std::string& name, int subimage,
               int miplevel) { self.reset(name, subimage, miplevel); },
            "name"_a, "subimage"_a = 0, "miplevel"_a = 0)
        .def(
            "reset",
            [](ImageBuf& self, const std::string& name, int subimage,
               int miplevel, const ImageSpec& config) {
                self.reset(name, subimage, miplevel, nullptr, &config);
            },
            "name"_a, "subimage"_a = 0, "miplevel"_a = 0,
            "config"_a = ImageSpec())
        .def(
            "reset",
            [](ImageBuf& self, const ImageSpec& spec) { self.reset(spec); },
            "spec"_a)
        .def_property_readonly("initialized",
                               [](const ImageBuf& self) {
                                   return self.initialized();
                               })
        .def(
            "init_spec",
            [](ImageBuf& self, std::string filename, int subimage,
               int miplevel) {
                py::gil_scoped_release gil;
                self.init_spec(filename, subimage, miplevel);
            },
            "filename"_a, "subimage"_a = 0, "miplevel"_a = 0)
        .def(
            "read",
            [](ImageBuf& self, int subimage, int miplevel, int chbegin,
               int chend, bool force, TypeDesc convert) {
                py::gil_scoped_release gil;
                return self.read(subimage, miplevel, chbegin, chend, force,
                                 convert);
            },
            "subimage"_a, "miplevel"_a, "chbegin"_a, "chend"_a, "force"_a,
            "convert"_a)
        .def(
            "read",
            [](ImageBuf& self, int subimage, int miplevel, bool force,
               TypeDesc convert) {
                py::gil_scoped_release gil;
                return self.read(subimage, miplevel, force, convert);
            },
            "subimage"_a = 0, "miplevel"_a = 0, "force"_a = false,
            "convert"_a = TypeUnknown)

        .def(
            "write",
            [](ImageBuf& self, const std::string& filename, TypeDesc dtype,
               const std::string& fileformat) {
                py::gil_scoped_release gil;
                return self.write(filename, dtype, fileformat);
            },
            "filename"_a, "dtype"_a = TypeUnknown, "fileformat"_a = "")
        // deprecated version:
        .def(
            "write",
            [](ImageBuf& self, const std::string& filename,
               const std::string& fileformat) {
                py::gil_scoped_release gil;
                return self.write(filename, fileformat);
            },
            "filename"_a, "fileformat"_a)
        .def(
            "make_writeable",
            [](ImageBuf& self, bool keep_cache_type) {
                py::gil_scoped_release gil;
                return self.make_writeable(keep_cache_type);
            },
            "keep_cache_type"_a = false)
        .def("set_write_format", &ImageBuf::set_write_format)
        // FIXME -- write(ImageOut&)
        .def("set_write_tiles", &ImageBuf::set_write_tiles, "width"_a = 0,
             "height"_a = 0, "depth"_a = 0)
        .def("spec", &ImageBuf::spec,
             py::return_value_policy::reference_internal)
        .def("nativespec", &ImageBuf::nativespec,
             py::return_value_policy::reference_internal)
        .def("specmod", &ImageBuf::specmod,
             py::return_value_policy::reference_internal)
        .def_property_readonly("name",
                               [](const ImageBuf& self) {
                                   return PY_STR(self.name());
                               })
        .def_property_readonly("file_format_name",
                               [](const ImageBuf& self) {
                                   return PY_STR(self.file_format_name());
                               })
        .def_property_readonly("subimage", &ImageBuf::subimage)
        .def_property_readonly("nsubimages", &ImageBuf::nsubimages)
        .def_property_readonly("miplevel", &ImageBuf::miplevel)
        .def_property_readonly("nmiplevels", &ImageBuf::nmiplevels)
        .def_property_readonly("nchannels", &ImageBuf::nchannels)
        .def_property("orientation", &ImageBuf::orientation,
                      &ImageBuf::set_orientation)
        .def_property_readonly("oriented_width", &ImageBuf::oriented_width)
        .def_property_readonly("oriented_height", &ImageBuf::oriented_height)
        .def_property_readonly("oriented_x", &ImageBuf::oriented_x)
        .def_property_readonly("oriented_y", &ImageBuf::oriented_y)
        .def_property_readonly("oriented_full_width",
                               &ImageBuf::oriented_full_width)
        .def_property_readonly("oriented_full_height",
                               &ImageBuf::oriented_full_height)
        .def_property_readonly("oriented_full_x", &ImageBuf::oriented_full_x)
        .def_property_readonly("oriented_full_y", &ImageBuf::oriented_full_y)
        .def_property_readonly("xbegin", &ImageBuf::xbegin)
        .def_property_readonly("xend", &ImageBuf::xend)
        .def_property_readonly("ybegin", &ImageBuf::ybegin)
        .def_property_readonly("yend", &ImageBuf::yend)
        .def_property_readonly("zbegin", &ImageBuf::zbegin)
        .def_property_readonly("zend", &ImageBuf::zend)
        .def_property_readonly("xmin", &ImageBuf::xmin)
        .def_property_readonly("xmax", &ImageBuf::xmax)
        .def_property_readonly("ymin", &ImageBuf::ymin)
        .def_property_readonly("ymax", &ImageBuf::ymax)
        .def_property_readonly("zmin", &ImageBuf::zmin)
        .def_property_readonly("zmax", &ImageBuf::zmax)
        .def_property_readonly("roi", &ImageBuf::roi)
        .def_property("roi_full", &ImageBuf::roi_full, &ImageBuf::set_roi_full)
        .def("set_origin", &ImageBuf::set_origin, "x"_a, "y"_a, "z"_a = 0)
        .def("set_full", &ImageBuf::set_full)
        .def_property_readonly("pixels_valid", &ImageBuf::pixels_valid)
        .def_property_readonly("pixeltype", &ImageBuf::pixeltype)
        .def_property_readonly("has_error", &ImageBuf::has_error)
        .def("geterror",
             [](const ImageBuf& self) { return PY_STR(self.geterror()); })

        .def("pixelindex", &ImageBuf::pixelindex, "x"_a, "y"_a, "z"_a,
             "check_range"_a = false)
        .def("copy_metadata", &ImageBuf::copy_metadata)
        .def("copy_pixels", &ImageBuf::copy_pixels)
        .def(
            "copy",
            [](ImageBuf& self, const ImageBuf& src, TypeDesc format) {
                py::gil_scoped_release gil;
                return self.copy(src, format);
            },
            "src"_a, "format"_a = TypeUnknown)
        .def(
            "copy",
            [](const ImageBuf& src, TypeDesc format) {
                py::gil_scoped_release gil;
                return src.copy(format);
            },
            "format"_a = TypeUnknown)
        .def("swap", &ImageBuf::swap)
        .def("getchannel", &ImageBuf::getchannel, "x"_a, "y"_a, "z"_a, "c"_a,
             "wrap"_a = "black")
        .def("getpixel", &ImageBuf_getpixel, "x"_a, "y"_a, "z"_a = 0,
             "wrap"_a = "black")

        .def("interppixel", &ImageBuf_interppixel, "x"_a, "y"_a,
             "wrap"_a = "black")
        .def("interppixel_NDC", &ImageBuf_interppixel_NDC, "x"_a, "y"_a,
             "wrap"_a = "black")
        .def("interppixel_NDC_full", &ImageBuf_interppixel_NDC, "x"_a, "y"_a,
             "wrap"_a = "black")
        .def("interppixel_bicubic", &ImageBuf_interppixel_bicubic, "x"_a, "y"_a,
             "wrap"_a = "black")
        .def("interppixel_bicubic_NDC", &ImageBuf_interppixel_bicubic_NDC,
             "x"_a, "y"_a, "wrap"_a = "black")
        .def("setpixel", &ImageBuf_setpixel, "x"_a, "y"_a, "z"_a, "pixel"_a)
        .def("setpixel", &ImageBuf_setpixel2, "x"_a, "y"_a, "pixel"_a)
        .def("setpixel", &ImageBuf_setpixel1, "i"_a, "pixel"_a)
        .def("get_pixels", &ImageBuf_get_pixels, "format"_a = TypeFloat,
             "roi"_a = ROI::All())
        .def("set_pixels", &ImageBuf_set_pixels_buffer, "roi"_a, "pixels"_a)

        .def_property_readonly("deep", &ImageBuf::deep)
        .def("deep_samples", &ImageBuf::deep_samples, "x"_a, "y"_a, "z"_a = 0)
        .def("set_deep_samples", &ImageBuf::set_deep_samples, "x"_a, "y"_a,
             "z"_a = 0, "nsamples"_a = 1)
        .def("deep_insert_samples", &ImageBuf::deep_insert_samples, "x"_a,
             "y"_a, "z"_a = 0, "samplepos"_a, "nsamples"_a = 1)
        .def("deep_erase_samples", &ImageBuf::deep_erase_samples, "x"_a, "y"_a,
             "z"_a = 0, "samplepos"_a, "nsamples"_a = 1)
        .def("deep_value", &ImageBuf::deep_value, "x"_a, "y"_a, "z"_a,
             "channel"_a, "sample"_a)
        .def("deep_value_uint", &ImageBuf::deep_value_uint, "x"_a, "y"_a, "z"_a,
             "channel"_a, "sample"_a)
        .def("set_deep_value", &ImageBuf_set_deep_value, "x"_a, "y"_a, "z"_a,
             "channel"_a, "sample"_a, "value"_a = 0.0f)
        .def("set_deep_value_uint", &ImageBuf_set_deep_value_uint, "x"_a, "y"_a,
             "z"_a, "channel"_a, "sample"_a, "value"_a = 0)
        .def(
            "deepdata", [](ImageBuf& self) { return *self.deepdata(); },
            py::return_value_policy::reference_internal)

        // FIXME -- do we want to provide pixel iterators?
        ;
}

}  // namespace PyOpenImageIO
