/******************************************************************************
*
* Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer.
*
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*
* OpenGLBitmap.h
*
*****************************************************************************/
//2017/09/5 Added capture method.
#pragma once
#include <oz++/opengl/OpenGLObject.h>
#include <oz++/JPGFileWriter.h>
#include <oz++/PNGFileWriter.h>
namespace OZ {
class OpenGLBitmap :public OpenGLObject {
private:
GLint x;
GLint y;
GLsizei width;
GLsizei height;
GLenum format;
GLenum type;
GLvoid* pixels;
int channels;
int depth;
public:
OpenGLBitmap(GLint x, GLint y, GLsizei width, GLsizei height,
int depth, GLenum format=GL_RGB, GLenum type = GL_UNSIGNED_BYTE)
:x(x),
y(x),
width(width),
height(height),
format(format),
type(type),
pixels(NULL),
channels(0),
depth(depth)
{
channels = 1;
switch (format) {
//case GL_BGR:
case GL_RGB:
channels = 3;
break;
case GL_RGBA:
channels = 4;
break;
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
channels = 1;
break;
}
size_t size = width*height*channels;
pixels = new GLubyte[size];
memset(pixels, '\0', size);
}
~OpenGLBitmap()
{
delete [] (unsigned char*)pixels;
pixels = NULL;
}
GLvoid* read(GLenum buffer=GL_BACK)
{
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadBuffer(buffer);
glReadPixels(x, y, width, height, format, type, pixels);
return pixels;
}
bool saveAsJPG(const char* filename, bool vertFlip=true)
{
bool rc = false;
try {
JPGFileWriter writer(filename);
int quality = 100;
writer.write(width, height, depth, channels,(unsigned char*)pixels, quality, vertFlip);
rc = true;
} catch (Exception& ex) {
ex.display();
}
return rc;
}
bool saveAsPNG(const char* filename, bool vertFlip=true)
{
bool rc = false;
try {
PNGFileWriter writer(filename);
writer.write(width, height, depth, channels, (unsigned char*)pixels, vertFlip);
rc = true;
} catch (Exception& ex) {
ex.display();
}
return rc;
}
};
}