GLubyte * EJTexture::loadPixelsWithLodePNGFromPath(NSString * path) {
unsigned int w, h;
unsigned char * origPixels = NULL;
unsigned int error = lodepng_decode32_file(&origPixels, &w, &h, path->getCString());
if( error ) {
NSLOG("Error Loading image %s - %u: %s", path->getCString(), error, lodepng_error_text(error));
return origPixels;
}
setWidthAndHeight(w, h);
// If the image is already in the correct (power of 2) size, just return
// the original pixels unmodified
if( width == realWidth && height == realHeight ) {
return origPixels;
}
// Copy the original pixels into the upper left corner of a larger
// (power of 2) pixel buffer, free the original pixels and return
// the larger buffer
else {
GLubyte * pixels = (GLubyte *)calloc( realWidth * realHeight * 4, sizeof(GLubyte) );
for( int y = 0; y < height; y++ ) {
memcpy( &pixels[y*realWidth*4], &origPixels[y*width*4], width*4 );
}
free( origPixels );
return pixels;
}
}
EJTexture::EJTexture(int widthp, int heightp, GLenum formatp) : textureId(0), width(0), height(0), realWidth(0), realHeight(0) {
// Create an empty texture
contentScale = 1;
NSString* empty = NSStringMake("[Empty]");
empty->retain();
fullPath = empty;
setWidthAndHeight(widthp, heightp);
createTextureWithPixels(NULL, formatp);
}
void GLFramebuffer::finish(bool depth)
{
if (mFinished)
{
return;
}
mFinished = true;
glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
if (depth and mDepthTexture == NULL)
{
glGenRenderbuffers(1, &mDepthRBO);
glBindRenderbuffer(GL_RENDERBUFFER, mDepthRBO);
}
setWidthAndHeight(mWidth, mHeight);
}
EJTexture::EJTexture(int widthp, int heightp, GLubyte * pixels) : textureId(0), width(0), height(0), realWidth(0), realHeight(0) {
// Creates a texture with the given pixels
contentScale = 1;
NSString* empty = NSStringMake("[From Pixels]");
empty->retain();
fullPath = empty;
setWidthAndHeight(widthp, heightp);
if( width != realWidth || height != realHeight ) {
GLubyte * pixelsPow2 = (GLubyte *)calloc( realWidth * realHeight * 4, sizeof(GLubyte) );
for( int y = 0; y < height; y++ ) {
memcpy( &pixelsPow2[y*realWidth*4], &pixels[y*width*4], width * 4 );
}
createTextureWithPixels(pixelsPow2, GL_RGBA);
free(pixelsPow2);
}
else {
createTextureWithPixels(pixels, GL_RGBA);
}
}
Driver::Driver( const Config& cfg, const hydroutil::Context& context ) :
config_(cfg),
context_(context)
{
cameras_.resize( config_.size() );
frames_.resize( config_.size() );
for( unsigned int i=0; i<cameras_.size(); ++i )
{
// picks up the first camera it finds on the firewire bus
cameras_.at(i) = cvCreateCameraCapture( i );
if( cameras_.at(i) == NULL )
{
std::string ss = "Failed to initialize CvCameraDevice " + i ;
gbxutilacfr::Exception( ERROR_INFO, ss );
throw ss;
}
// the default in opencv is CV_CAP_PROP_CONVERT_RGB=1 which causes
// cameras with bayer encoding to be converted from mono to rgb
// without using the bayer functions. CV_CAP_PROP_CONVERT_RGB=0
// keeps the original format.
cvSetCaptureProperty( cameras_.at(i), CV_CAP_PROP_CONVERT_RGB, 0 );
// assume all the cameras should be set to the same size as camera 0
setWidthAndHeight(static_cast<int>(config_.at(i).width), static_cast<int>(config_.at(i).height), i );
// record the actual width and height
frames_.at(i) = cvQueryFrame( cameras_.at(i) );
// int width = frame_->width;
// int height = frame_->height;
// this following call should work in opencv but have had mixed results
// int width = (int)cvGetCaptureProperty( capture_, CV_CAP_PROP_FRAME_WIDTH );
//int height = (int)cvGetCaptureProperty( capture_, CV_CAP_PROP_FRAME_HEIGHT );
if(cameras_.at(i) == NULL )
{
stringstream ss;
ss << "Camera " << i << " could not be initialized" ;
throw gbxutilacfr::Exception( ERROR_INFO, ss.str() );
}
if( frames_.at(i)->width != static_cast<int>(config_.at(i).width) )
{
std::stringstream sse;
sse << "config does not match image properties of camera " << i << ": actual width=" << frames_.at(i)->width << " config width=" << config_.at(i).width;
throw gbxutilacfr::Exception(ERROR_INFO, sse.str());
}
if( frames_.at(i)->height != static_cast<int>(config_.at(i).height) )
{
std::stringstream sse;
sse << "config does not match image properties " << i << ": actual height=" << frames_.at(i)->height << " config height=" << config_.at(i).height;
throw gbxutilacfr::Exception(ERROR_INFO, sse.str());
}
if( frames_.at(i)->width*frames_.at(i)->height*3 != static_cast<int>(config_.at(i).size) )
{
std::stringstream sse;
sse << "config does not match image properties " << i << ": actual size=" << frames_.at(i)->width*frames_.at(i)->height*3 << " config size=" << config_.at(i).size;
throw gbxutilacfr::Exception(ERROR_INFO, sse.str());
}
if( config_.at(i).format!="BGR8"
&& config_.at(i).format!="RGB8"
&& config_.at(i).format!="BayerRG8"
&& config_.at(i).format!="BayerGR8"
&& config_.at(i).format!="BayerGB8"
&& config_.at(i).format!="BayerBG8"
&& config_.at(i).format!="GRAY8" )
{
std::stringstream sse;
sse << "config does not match supported image properties " << i << ": config format=" << config_.at(i).format;
throw gbxutilacfr::Exception(ERROR_INFO, sse.str());
}
}
}
void GLFramebuffer::setWidth(unsigned int width)
{
setWidthAndHeight(width, mHeight);
}
void GLFramebuffer::setHeight(unsigned int height)
{
setWidthAndHeight(mWidth, height);
}
