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-rw-r--r--source/blender/imbuf/intern/openexr.cpp397
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diff --git a/source/blender/imbuf/intern/openexr.cpp b/source/blender/imbuf/intern/openexr.cpp
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-/**
- *
- * ***** BEGIN GPL/BL DUAL 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. The Blender
- * Foundation also sells licenses for use in proprietary software under
- * the Blender License. See http://www.blender.org/BL/ for information
- * about this.
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright by Gernot Ziegler <gz@lysator.liu.se>.
- * All rights reserved.
- *
- * The Original Code is: all of this file.
- *
- * Contributor(s): none yet.
- *
- * ***** END GPL/BL DUAL LICENSE BLOCK *****
- *
- */
-
-#ifdef WITH_OPENEXR
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string>
-
-#include <iostream>
-
-#include <half.h>
-#include <ImfVersion.h>
-#include <ImathBox.h>
-#include <ImfArray.h>
-#include <ImfIO.h>
-#include <ImfChannelList.h>
-#include <ImfPixelType.h>
-#include <ImfInputFile.h>
-#include <ImfOutputFile.h>
-
-using namespace Imf;
-using namespace Imath;
-
-extern "C"
-{
-#ifdef WIN32
-#include "BLI_winstuff.h"
-#endif
-#include "BLI_blenlib.h"
-
-#include "imbuf.h"
-#include "imbuf_patch.h"
-
-#include "IMB_imbuf_types.h"
-#include "IMB_imbuf.h"
-
-#include "IMB_allocimbuf.h"
-#include "IMB_cmap.h"
-}
-
-
-int imb_is_a_openexr(void *mem)
-{
- return Imf::isImfMagic ((const char *)mem);
-}
-
-
-class Mem_IStream: public IStream
-{
- public:
-
- Mem_IStream (unsigned char *exrbuf, int exrsize):
- IStream("dummy"), _exrpos (0), _exrsize(exrsize) { _exrbuf = exrbuf; }
-
- virtual bool read (char c[], int n);
- virtual Int64 tellg ();
- virtual void seekg (Int64 pos);
- virtual void clear ();
-//virtual ~Mem_IStream() {}; // unused
-
- private:
-
- Int64 _exrpos;
- Int64 _exrsize;
- unsigned char *_exrbuf;
-};
-
-bool Mem_IStream::read (char c[], int n)
-{
- if (n + _exrpos <= _exrsize)
- {
- memcpy(c, (void *)(&_exrbuf[_exrpos]), n);
- _exrpos += n;
- return true;
- }
- else
- return false;
-}
-
-
-Int64 Mem_IStream::tellg ()
-{
- return _exrpos;
-}
-
-
-void Mem_IStream::seekg (Int64 pos)
-{
- _exrpos = pos;
-}
-
-
-void Mem_IStream::clear ()
-{
-}
-
-
-struct _RGBAZ
-{
- half r;
- half g;
- half b;
- half a;
- half z;
-};
-
-typedef struct _RGBAZ RGBAZ;
-
-extern "C"
-{
- short imb_save_openexr(struct ImBuf *ibuf, char *name, int flags)
- {
- int width = ibuf->x;
- int height = ibuf->y;
- int i;
-
- // summarize
- int write_zbuf = (flags & IB_zbuf) && ibuf->zbuf != 0;
-
- printf("OpenEXR-save: Saving %s image of %d x %d\n",
- write_zbuf ? "RGBAZ" : "RGBA", width, height);
-
- try
- {
- Header header (width, height);
- header.channels().insert ("R", Channel (HALF));
- header.channels().insert ("G", Channel (HALF));
- header.channels().insert ("B", Channel (HALF));
- header.channels().insert ("A", Channel (HALF));
- if (write_zbuf)
- header.channels().insert ("Z", Channel (HALF));
-
- FrameBuffer frameBuffer;
- OutputFile *file;
-
- if (flags & IB_mem)
- {
- printf("OpenEXR-save: Create EXR in memory CURRENTLY NOT SUPPORTED !\n");
- imb_addencodedbufferImBuf(ibuf);
- ibuf->encodedsize = 0;
- return(0);
- }
- else
- {
- printf("OpenEXR-save: Creating output file %s\n", name);
- file = new OutputFile(name, header);
- }
-
- RGBAZ *pixels = new RGBAZ[height * width];
-
- int bytesperpixel = (ibuf->depth + 7) >> 3;
- if ((bytesperpixel > 4) || (bytesperpixel == 2))
- {
- printf("OpenEXR-save: unsupported bytes per pixel: %d\n", bytesperpixel);
- return (0);
- }
-
- frameBuffer.insert ("R",
- Slice (HALF,
- (char *) &pixels[0].r,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- frameBuffer.insert ("G",
- Slice (HALF,
- (char *) &pixels[0].g,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- frameBuffer.insert ("B",
- Slice (HALF,
- (char *) &pixels[0].b,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- frameBuffer.insert ("A",
- Slice (HALF,
- (char *) &pixels[0].a,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- if (write_zbuf)
- frameBuffer.insert ("Z",
- Slice (HALF,
- (char *) &pixels[0].z,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- if (!ibuf->rect_float)
- {
- printf("OpenEXR-save: Converting Blender 8/8/8/8 pixels to OpenEXR format\n");
-
- RGBAZ *to = pixels;
- unsigned char *from = (unsigned char *) ibuf->rect;
-
- for (i = ibuf->x * ibuf->y; i > 0; i--)
- {
- to->r = (float)(from[0])/255.0;
- to->g = (float)(from[1])/255.0;
- to->b = (float)(from[2])/255.0;
- to->a = (float)(from[3])/255.0;
- to++; from += 4;
- }
- }
- else
- {
- printf("OpenEXR-save: Converting Blender FLOAT pixels to OpenEXR format\n");
-
- RGBAZ *to = pixels;
- float *from = ibuf->rect_float;
-
- for (i = ibuf->x * ibuf->y; i > 0; i--)
- {
- to->r = from[0];
- to->g = from[1];
- to->b = from[2];
- to->a = from[3];
- to++; from += 4;
- }
- }
-
- if (write_zbuf)
- {
- RGBAZ *to = pixels;
- int *fromz = ibuf->zbuf;
-
- for (int i = ibuf->x * ibuf->y; i > 0; i--)
- {
- to->z = (0.5+((float)(*fromz/65536)/65536.0));
- to++; fromz ++;
- }
- }
-
- printf("OpenEXR-save: Writing OpenEXR file of height %d.\n", height);
-
- file->setFrameBuffer (frameBuffer);
- file->writePixels (height);
- delete file;
- }
- catch (const std::exception &exc)
- {
- printf("OpenEXR-save: ERROR: %s\n", exc.what());
- if (ibuf) IMB_freeImBuf(ibuf);
-
- return (0);
- }
-
- return (1);
- printf("OpenEXR-save: Done.\n");
- }
-
- struct ImBuf *imb_load_openexr(unsigned char *mem, int size, int flags)
- {
- struct ImBuf *ibuf = 0;
-
- printf("OpenEXR-load: testing input, size is %d\n", size);
- if (imb_is_a_openexr(mem) == 0) return(0);
-
- InputFile *file = NULL;
-
- try
- {
- printf("OpenEXR-load: Creating InputFile from mem source\n");
- Mem_IStream membuf(mem, size);
- file = new InputFile(membuf);
-
- Box2i dw = file->header().dataWindow();
- int width = dw.max.x - dw.min.x + 1;
- int height = dw.max.y - dw.min.y + 1;
-
- printf("OpenEXR-load: image data window %d %d %d %d\n",
- dw.min.x, dw.min.y, dw.max.x, dw.max.y);
-
- const ChannelList &channels = file->header().channels();
-
- for (ChannelList::ConstIterator i = channels.begin(); i != channels.end(); ++i)
- {
- const Channel &channel = i.channel();
- printf("OpenEXR-load: Found channel %s of type %d\n", i.name(), channel.type);
- if (channel.type != 1)
- {
- printf("OpenEXR-load: Can only process HALF input !!\n");
- return(NULL);
- }
- }
-
- RGBAZ *pixels = new RGBAZ[height * width];
-
- FrameBuffer frameBuffer;
-
- frameBuffer.insert ("R",
- Slice (HALF,
- (char *) &pixels[0].r,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- frameBuffer.insert ("G",
- Slice (HALF,
- (char *) &pixels[0].g,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- frameBuffer.insert ("B",
- Slice (HALF,
- (char *) &pixels[0].b,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
- frameBuffer.insert ("A",
- Slice (HALF,
- (char *) &pixels[0].a,
- sizeof (pixels[0]) * 1,
- sizeof (pixels[0]) * width));
-
-// FIXME ? Would be able to read Z data or other channels here !
-
- printf("OpenEXR-load: Reading pixel data\n");
- file->setFrameBuffer (frameBuffer);
- file->readPixels (dw.min.y, dw.max.y);
-
- printf("OpenEXR-load: Converting to Blender ibuf\n");
-
- int bytesperpixel = 4; // since OpenEXR fills in unknown channels
- ibuf = IMB_allocImBuf(width, height, 8 * bytesperpixel, 0, 0);
-
- if (ibuf)
- {
- ibuf->ftype = PNG;
- imb_addrectImBuf(ibuf);
-
- if (!(flags & IB_test))
- {
- unsigned char *to = (unsigned char *) ibuf->rect;
- RGBAZ *from = pixels;
- RGBAZ prescale;
-
- for (int i = ibuf->x * ibuf->y; i > 0; i--)
- {
- to[0] = (unsigned char)(((float)from->r > 1.0) ? 1.0 : (float)from->r) * 255;
- to[1] = (unsigned char)(((float)from->g > 1.0) ? 1.0 : (float)from->g) * 255;
- to[2] = (unsigned char)(((float)from->b > 1.0) ? 1.0 : (float)from->b) * 255;
- to[3] = (unsigned char)(((float)from->a > 1.0) ? 1.0 : (float)from->a) * 255;
- to += 4; from++;
- }
- }
-
- }
- else
- printf("Couldn't allocate memory for PNG image\n");
-
- printf("OpenEXR-load: Done\n");
-
- return(ibuf);
- }
- catch (const std::exception &exc)
- {
- std::cerr << exc.what() << std::endl;
- if (ibuf) IMB_freeImBuf(ibuf);
-
- return (0);
- }
-
- }
-
-} // export "C"
-
-#endif // #ifdef WITH_OPENEXR
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