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/*
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* $Id: png.c 36777 2011-05-19 11:54:03Z blendix $
*/
/** \file blender/imbuf/intern/png.c
* \ingroup imbuf
*/
#ifdef WITH_OPENIMAGEIO
#include "MEM_sys_types.h"
#include "imbuf.h"
extern "C" {
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_allocimbuf.h"
#include "IMB_metadata.h"
#include "IMB_filetype.h"
}
#include <OpenImageIO/imageio.h>
OIIO_NAMESPACE_USING
int imb_is_a_openimageio(unsigned char *buf)
{
return 0;
}
int imb_is_a_filepath_openimageio(const char *filepath)
{
ImageInput *in = ImageInput::create(filepath);
ImageSpec spec;
int recognized = in->open(filepath, spec);
in->close();
return recognized;
}
template<typename T> static void pack_pixels(T *pixels, int width, int height, int components, T alpha)
{
if(components == 3) {
for(int i = width*height-1; i >= 0; i--) {
pixels[i*4+3] = alpha;
pixels[i*4+2] = pixels[i*3+2];
pixels[i*4+1] = pixels[i*3+1];
pixels[i*4+0] = pixels[i*3+0];
}
}
else if(components == 1) {
for(int i = width*height-1; i >= 0; i--) {
pixels[i*4+3] = alpha;
pixels[i*4+2] = pixels[i];
pixels[i*4+1] = pixels[i];
pixels[i*4+0] = pixels[i];
}
}
}
int imb_ftype_openimageio(ImFileType *type, ImBuf *ibuf)
{
return ibuf->ftype & (PNG|TGA|JPG|BMP|RADHDR|TIF|OPENEXR|CINEON|DPX|DDS|JP2);
}
static int format_name_to_ftype(const char *format_name)
{
if(strcmp(format_name, "png") == 0)
return PNG;
else if(strcmp(format_name, "targa") == 0)
return TGA; /* RAWTGA */
else if(strcmp(format_name, "jpeg") == 0)
return JPG;
else if(strcmp(format_name, "bmp") == 0)
return BMP;
else if(strcmp(format_name, "hdr") == 0)
return RADHDR;
else if(strcmp(format_name, "tiff") == 0)
return TIF; /* TIF_16BIT */
else if(strcmp(format_name, "openexr") == 0)
return OPENEXR; /* OPENEXR_HALF, OPENEXR_COMPRESS */
else if(strcmp(format_name, "cineon") == 0)
return CINEON;
else if(strcmp(format_name, "dpx") == 0)
return DPX;
else if(strcmp(format_name, "dds") == 0)
return DDS;
else if(strcmp(format_name, "jpeg2000") == 0)
return JP2; /* JP2_12BIT, JP2_16BIT, JP2_YCC , JP2_CINE , JP2_CINE_48FPS */
/* not handled: "field3d", "fits", "ico", "iff", "pnm", "ptex", "sgi", "zfile" */
return 0;
}
ImBuf *imb_load_openimageio(const char *filepath, int flags)
{
ImageInput *in = ImageInput::create(filepath);
ImageSpec spec;
bool success;
if(!in->open(filepath, spec)) {
delete in;
return NULL;
}
/* we only handle certain number of components */
int width = spec.width;
int height = spec.height;
int components = spec.nchannels;
if(!(components == 1 || components == 3 || components == 4)) {
delete in;
return NULL;
}
ImBuf *ibuf = IMB_allocImBuf(width, height, 32, 0);
ibuf->ftype = format_name_to_ftype(in->format_name());
/* TODO: handle oiio:ColorSpace, oiio:Gamma, metadata, multilayer, size_t_safe */
/* read RGBA pixels */
if(spec.format == TypeDesc::UINT8 || spec.format == TypeDesc::INT8) {
//if(in->get_string_attribute("oiio:ColorSpace") == "sRGB")
ibuf->profile = IB_PROFILE_SRGB;
imb_addrectImBuf(ibuf);
uint8_t *pixels = (uint8_t*)ibuf->rect;
int scanlinesize = width*components;
success = in->read_image(TypeDesc::UINT8,
pixels + (height-1)*scanlinesize,
AutoStride,
-scanlinesize*sizeof(uint8_t),
AutoStride);
pack_pixels<uint8_t>(pixels, width, height, components, 255);
}
else {
ibuf->profile = IB_PROFILE_LINEAR_RGB; /* XXX assumption */
imb_addrectfloatImBuf(ibuf);
float *pixels = ibuf->rect_float;
int scanlinesize = width*components;
success = in->read_image(TypeDesc::FLOAT,
pixels + (height-1)*scanlinesize,
AutoStride,
-scanlinesize*sizeof(float),
AutoStride);
pack_pixels<float>(pixels, width, height, components, 1.0f);
}
if(!success)
fprintf(stderr, "OpenImageIO: error loading image: %s\n", in->geterror().c_str());
in->close();
delete in;
return ibuf;
}
int imb_save_openimageio(struct ImBuf *ibuf, const char *filepath, int flags)
{
ImageOutput *out = ImageOutput::create(filepath);
if(ibuf->rect_float) {
/* XXX profile */
/* save as float image XXX works? */
ImageSpec spec(ibuf->x, ibuf->y, 4, TypeDesc::FLOAT);
int scanlinesize = ibuf->x*4;
out->open(filepath, spec);
/* conversion for different top/bottom convention */
out->write_image(TypeDesc::FLOAT,
ibuf->rect_float + (ibuf->y-1)*scanlinesize,
AutoStride,
-scanlinesize*sizeof(float),
AutoStride);
}
else {
/* save as 8bit image */
ImageSpec spec(ibuf->x, ibuf->y, 4, TypeDesc::UINT8);
int scanlinesize = ibuf->x*4;
out->open(filepath, spec);
/* conversion for different top/bottom convention */
out->write_image(TypeDesc::UINT8,
(uint8_t*)ibuf->rect + (ibuf->y-1)*scanlinesize,
AutoStride,
-scanlinesize*sizeof(uint8_t),
AutoStride);
}
out->close();
delete out;
return 1;
}
#endif /* WITH_OPENIMAGEIO */
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