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-rw-r--r--source/gameengine/VideoTexture/ImageBuff.cpp424
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diff --git a/source/gameengine/VideoTexture/ImageBuff.cpp b/source/gameengine/VideoTexture/ImageBuff.cpp
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--- a/source/gameengine/VideoTexture/ImageBuff.cpp
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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.
- *
- * Copyright (c) 2007 The Zdeno Ash Miklas
- *
- * This source file is part of VideoTexture library
- *
- * Contributor(s):
- *
- * ***** END GPL LICENSE BLOCK *****
- */
-
-/** \file gameengine/VideoTexture/ImageBuff.cpp
- * \ingroup bgevideotex
- */
-
-// implementation
-
-#include "EXP_PyObjectPlus.h"
-#include <structmember.h>
-
-#include "ImageBuff.h"
-#include "Exception.h"
-#include "ImageBase.h"
-#include "FilterSource.h"
-
-// use ImBuf API for image manipulation
-extern "C" {
-#include "IMB_imbuf_types.h"
-#include "IMB_imbuf.h"
-#include "bgl.h"
-};
-
-// default filter
-FilterRGB24 defFilter;
-
-// forward declaration;
-extern PyTypeObject ImageBuffType;
-
-static int ImageBuff_init(PyObject *pySelf, PyObject *args, PyObject *kwds)
-{
- short width = -1;
- short height = -1;
- unsigned char color = 0;
- PyObject *py_scale = Py_False;
- ImageBuff *image;
-
- PyImage *self = reinterpret_cast<PyImage*>(pySelf);
- // create source object
- if (self->m_image != NULL)
- delete self->m_image;
- image = new ImageBuff();
- self->m_image = image;
-
- if (PyArg_ParseTuple(args, "hh|bO!:ImageBuff", &width, &height, &color, &PyBool_Type, &py_scale))
- {
- // initialize image buffer
- image->setScale(py_scale == Py_True);
- image->clear(width, height, color);
- }
- else
- {
- // check if at least one argument was passed
- if (width != -1 || height != -1)
- // yes and they didn't match => it's an error
- return -1;
- // empty argument list is okay
- PyErr_Clear();
- }
- // initialization succeded
- return 0;
-
-}
-
-ImageBuff::~ImageBuff (void)
-{
- if (m_imbuf)
- IMB_freeImBuf(m_imbuf);
-}
-
-
-// load image from buffer
-void ImageBuff::load(unsigned char *img, short width, short height)
-{
- // loading a new buffer implies to reset the imbuf if any, because the size may change
- if (m_imbuf)
- {
- IMB_freeImBuf(m_imbuf);
- m_imbuf = NULL;
- }
- // initialize image buffer
- init(width, height);
- // original size
- short orgSize[2] = {width, height};
- // is filter available
- if (m_pyfilter != NULL)
- // use it to process image
- convImage(*(m_pyfilter->m_filter), img, orgSize);
- else
- // otherwise use default filter
- convImage(defFilter, img, orgSize);
- // image is available
- m_avail = true;
-}
-
-void ImageBuff::clear(short width, short height, unsigned char color)
-{
- unsigned char *p;
- int size;
-
- // loading a new buffer implies to reset the imbuf if any, because the size may change
- if (m_imbuf)
- {
- IMB_freeImBuf(m_imbuf);
- m_imbuf = NULL;
- }
- // initialize image buffer
- init(width, height);
- // the width/height may be different due to scaling
- size = (m_size[0] * m_size[1]);
- // initialize memory with color for all channels
- memset(m_image, color, size*4);
- // and change the alpha channel
- p = &((unsigned char*)m_image)[3];
- for (; size>0; size--)
- {
- *p = 0xFF;
- p += 4;
- }
- // image is available
- m_avail = true;
-}
-
-// img must point to a array of RGBA data of size width*height
-void ImageBuff::plot(unsigned char *img, short width, short height, short x, short y, short mode)
-{
- struct ImBuf *tmpbuf;
-
- if (m_size[0] == 0 || m_size[1] == 0 || width <= 0 || height <= 0)
- return;
-
- if (!m_imbuf) {
- // allocate most basic imbuf, we will assign the rect buffer on the fly
- m_imbuf = IMB_allocImBuf(m_size[0], m_size[1], 0, 0);
- }
-
- tmpbuf = IMB_allocImBuf(width, height, 0, 0);
-
- // assign temporarily our buffer to the ImBuf buffer, we use the same format
- tmpbuf->rect = (unsigned int*)img;
- m_imbuf->rect = m_image;
- IMB_rectblend(m_imbuf, m_imbuf, tmpbuf, NULL, NULL, NULL, 0, x, y, x, y, 0, 0, width, height, (IMB_BlendMode)mode, false);
- // remove so that MB_freeImBuf will free our buffer
- m_imbuf->rect = NULL;
- tmpbuf->rect = NULL;
- IMB_freeImBuf(tmpbuf);
-}
-
-void ImageBuff::plot(ImageBuff *img, short x, short y, short mode)
-{
- if (m_size[0] == 0 || m_size[1] == 0 || img->m_size[0] == 0 || img->m_size[1] == 0)
- return;
-
- if (!m_imbuf) {
- // allocate most basic imbuf, we will assign the rect buffer on the fly
- m_imbuf = IMB_allocImBuf(m_size[0], m_size[1], 0, 0);
- }
- if (!img->m_imbuf) {
- // allocate most basic imbuf, we will assign the rect buffer on the fly
- img->m_imbuf = IMB_allocImBuf(img->m_size[0], img->m_size[1], 0, 0);
- }
- // assign temporarily our buffer to the ImBuf buffer, we use the same format
- img->m_imbuf->rect = img->m_image;
- m_imbuf->rect = m_image;
- IMB_rectblend(m_imbuf, m_imbuf, img->m_imbuf, NULL, NULL, NULL, 0, x, y, x, y, 0, 0, img->m_imbuf->x, img->m_imbuf->y, (IMB_BlendMode)mode, false);
- // remove so that MB_freeImBuf will free our buffer
- m_imbuf->rect = NULL;
- img->m_imbuf->rect = NULL;
-}
-
-
-// cast Image pointer to ImageBuff
-inline ImageBuff *getImageBuff(PyImage *self)
-{ return static_cast<ImageBuff *>(self->m_image); }
-
-
-// python methods
-
-static bool testPyBuffer(Py_buffer *buffer, int width, int height, unsigned int pixsize)
-{
- if (buffer->itemsize != 1)
- {
- PyErr_SetString(PyExc_ValueError, "Buffer must be an array of bytes");
- return false;
- }
- if (buffer->len != width*height*pixsize)
- {
- PyErr_SetString(PyExc_ValueError, "Buffer hasn't the correct size");
- return false;
- }
- // multi dimension are ok as long as there is no hole in the memory
- Py_ssize_t size = buffer->itemsize;
- for (int i=buffer->ndim-1; i>=0 ; i--)
- {
- if (buffer->suboffsets != NULL && buffer->suboffsets[i] >= 0)
- {
- PyErr_SetString(PyExc_ValueError, "Buffer must be of one block");
- return false;
- }
- if (buffer->strides != NULL && buffer->strides[i] != size)
- {
- PyErr_SetString(PyExc_ValueError, "Buffer must be of one block");
- return false;
- }
- if (i > 0)
- size *= buffer->shape[i];
- }
- return true;
-}
-
-static bool testBGLBuffer(Buffer *buffer, int width, int height, unsigned int pixsize)
-{
- unsigned int size = BGL_typeSize(buffer->type);
- for (int i=0; i<buffer->ndimensions; i++)
- {
- size *= buffer->dimensions[i];
- }
- if (size != width*height*pixsize)
- {
- PyErr_SetString(PyExc_ValueError, "Buffer hasn't the correct size");
- return false;
- }
- return true;
-}
-
-
-// load image
-static PyObject *load(PyImage *self, PyObject *args)
-{
- // parameters: string image buffer, its size, width, height
- Py_buffer buffer;
- Buffer *bglBuffer;
- short width;
- short height;
- unsigned int pixSize;
-
- // calc proper buffer size
- // use pixel size from filter
- if (self->m_image->getFilter() != NULL)
- pixSize = self->m_image->getFilter()->m_filter->firstPixelSize();
- else
- pixSize = defFilter.firstPixelSize();
-
- // parse parameters
- if (!PyArg_ParseTuple(args, "s*hh:load", &buffer, &width, &height))
- {
- PyErr_Clear();
- // check if it is BGL buffer
- if (!PyArg_ParseTuple(args, "O!hh:load", &BGL_bufferType, &bglBuffer, &width, &height))
- {
- // report error
- return NULL;
- }
- else
- {
- if (testBGLBuffer(bglBuffer, width, height, pixSize))
- {
- try
- {
- // if correct, load image
- getImageBuff(self)->load((unsigned char*)bglBuffer->buf.asvoid, width, height);
- }
- catch (Exception & exp)
- {
- exp.report();
- }
- }
- }
- }
- else
- {
- // check if buffer size is correct
- if (testPyBuffer(&buffer, width, height, pixSize))
- {
- try
- {
- // if correct, load image
- getImageBuff(self)->load((unsigned char*)buffer.buf, width, height);
- }
- catch (Exception & exp)
- {
- exp.report();
- }
- }
- PyBuffer_Release(&buffer);
- }
- if (PyErr_Occurred())
- return NULL;
- Py_RETURN_NONE;
-}
-
-static PyObject *plot(PyImage *self, PyObject *args)
-{
- PyImage * other;
- Buffer* bglBuffer;
- Py_buffer buffer;
- //unsigned char * buff;
- //unsigned int buffSize;
- short width;
- short height;
- short x, y;
- short mode = IMB_BLEND_COPY;
-
- if (PyArg_ParseTuple(args, "s*hhhh|h:plot", &buffer, &width, &height, &x, &y, &mode))
- {
- // correct decoding, verify that buffer size is correct
- // we need a continuous memory buffer
- if (testPyBuffer(&buffer, width, height, 4))
- {
- getImageBuff(self)->plot((unsigned char*)buffer.buf, width, height, x, y, mode);
- }
- PyBuffer_Release(&buffer);
- if (PyErr_Occurred())
- return NULL;
- Py_RETURN_NONE;
- }
- PyErr_Clear();
- // try the other format
- if (PyArg_ParseTuple(args, "O!hh|h:plot", &ImageBuffType, &other, &x, &y, &mode))
- {
- getImageBuff(self)->plot(getImageBuff(other), x, y, mode);
- Py_RETURN_NONE;
- }
- PyErr_Clear();
- // try the last format (BGL buffer)
- if (!PyArg_ParseTuple(args, "O!hhhh|h:plot", &BGL_bufferType, &bglBuffer, &width, &height, &x, &y, &mode))
- {
- PyErr_SetString(PyExc_TypeError, "Expecting ImageBuff or Py buffer or BGL buffer as first argument; width, height next; postion x, y and mode as last arguments");
- return NULL;
- }
- if (testBGLBuffer(bglBuffer, width, height, 4))
- {
- getImageBuff(self)->plot((unsigned char*)bglBuffer->buf.asvoid, width, height, x, y, mode);
- }
- if (PyErr_Occurred())
- return NULL;
- Py_RETURN_NONE;
-}
-
-// methods structure
-static PyMethodDef imageBuffMethods[] = {
- {"load", (PyCFunction)load, METH_VARARGS, "Load image from buffer"},
- {"plot", (PyCFunction)plot, METH_VARARGS, "update image buffer"},
- {NULL}
-};
-// attributes structure
-static PyGetSetDef imageBuffGetSets[] = {
- // attributes from ImageBase class
- {(char*)"valid", (getter)Image_valid, NULL, (char*)"bool to tell if an image is available", NULL},
- {(char*)"image", (getter)Image_getImage, NULL, (char*)"image data", NULL},
- {(char*)"size", (getter)Image_getSize, NULL, (char*)"image size", NULL},
- {(char*)"scale", (getter)Image_getScale, (setter)Image_setScale, (char*)"fast scale of image (near neighbor)", NULL},
- {(char*)"flip", (getter)Image_getFlip, (setter)Image_setFlip, (char*)"flip image vertically", NULL},
- {(char*)"filter", (getter)Image_getFilter, (setter)Image_setFilter, (char*)"pixel filter", NULL},
- {NULL}
-};
-
-
-// define python type
-PyTypeObject ImageBuffType = {
- PyVarObject_HEAD_INIT(NULL, 0)
- "VideoTexture.ImageBuff", /*tp_name*/
- sizeof(PyImage), /*tp_basicsize*/
- 0, /*tp_itemsize*/
- (destructor)Image_dealloc, /*tp_dealloc*/
- 0, /*tp_print*/
- 0, /*tp_getattr*/
- 0, /*tp_setattr*/
- 0, /*tp_compare*/
- 0, /*tp_repr*/
- 0, /*tp_as_number*/
- 0, /*tp_as_sequence*/
- 0, /*tp_as_mapping*/
- 0, /*tp_hash */
- 0, /*tp_call*/
- 0, /*tp_str*/
- 0, /*tp_getattro*/
- 0, /*tp_setattro*/
- &imageBufferProcs, /*tp_as_buffer*/
- Py_TPFLAGS_DEFAULT, /*tp_flags*/
- "Image source from image buffer", /* tp_doc */
- 0, /* tp_traverse */
- 0, /* tp_clear */
- 0, /* tp_richcompare */
- 0, /* tp_weaklistoffset */
- 0, /* tp_iter */
- 0, /* tp_iternext */
- imageBuffMethods, /* tp_methods */
- 0, /* tp_members */
- imageBuffGetSets, /* tp_getset */
- 0, /* tp_base */
- 0, /* tp_dict */
- 0, /* tp_descr_get */
- 0, /* tp_descr_set */
- 0, /* tp_dictoffset */
- (initproc)ImageBuff_init, /* tp_init */
- 0, /* tp_alloc */
- Image_allocNew, /* tp_new */
-};
-
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