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/*
* pix_2pdp : pix to pdp bridge
*
* Capture the contents of the Gem pix and transform it to a PDP Packet whenever a bang is received
*
* Based on code of gem2pdp by Yves Degoyon
* Many thanks to IOhannes M Zmölnig
*
* Copyright (c) 2005 Georg Holzmann <grh@mur.at>
* parts Copyright (c) 2005-2006 James Tittle II <tigital@mac.com>
*
*/
#include "pix_2pdp.h"
#include "yuv.h"
//#define __TIMING__
CPPEXTERN_NEW(pix_2pdp)
pix_2pdp::pix_2pdp(void)
{
gem_image = NULL;
m_pdpoutlet = outlet_new(this->x_obj, &s_anything);
}
pix_2pdp::~pix_2pdp()
{
gem_image = NULL;
gem_xsize = 0;
gem_ysize = 0;
gem_csize = 0;
gem_upsidedown = 0;
}
// Image processing
void pix_2pdp::processImage(imageStruct &image)
{
gem_image = image.data;
gem_xsize = image.xsize;
gem_ysize = image.ysize;
gem_csize = image.csize;
gem_format = image.format;
gem_upsidedown = image.upsidedown;
}
// pdp processing
void pix_2pdp::bangMess()
{
t_int psize, px, py;
short int *pY, *pY2, *pU, *pV;
unsigned char g1,g2,g3,g4;
t_int helper;
if(gem_image)
{
// make pdp packet
psize = gem_xsize * gem_ysize;
m_packet0 = pdp_packet_new_image_YCrCb( gem_xsize, gem_ysize);
m_header = pdp_packet_header(m_packet0);
m_data = (short int *)pdp_packet_data(m_packet0);
pY = m_data;
pY2 = m_data + gem_xsize;
pV = m_data+psize;
pU = m_data+psize+(psize>>2);
switch(gem_format)
{
// RGB
case GL_RGB:
case GL_RGBA:
case GL_BGR:
case GL_BGRA:
for ( py=0; py<gem_ysize; py++)
{
const t_int py2=(gem_upsidedown)?py:(gem_ysize-py);
for ( px=0; px<gem_xsize; px++)
{
// the way to access the pixels: (C=chRed, chBlue, ...)
// image[Y * xsize * csize + X * csize + C]
helper = py2*gem_xsize*gem_csize + px*gem_csize;
g1=gem_image[helper+chRed]; // R
g2=gem_image[helper+chGreen]; // G
g3=gem_image[helper+chBlue]; // B
*(pY) = yuv_RGBtoY( (g1<<16) + (g2<<8) + g3 ) << 7;
*(pV) = ( yuv_RGBtoV( (g1<<16) + (g2<<8) + g3 ) - 128 ) << 8;
*(pU) = ( yuv_RGBtoU( (g1<<16) + (g2<<8) + g3 ) - 128 ) << 8;
pY++;
if ( (px%2==0) && (py%2==0) )
pV++; pU++;
}
}
pdp_packet_pass_if_valid(m_pdpoutlet, &m_packet0);
break;
// YUV
case GL_YUV422_GEM: {
#ifdef __TIMING__
UnsignedWide start, end;
Microseconds(&start);
#endif
#ifdef __VEC__
YUV422_to_YV12_altivec(pY, pY2, pV, pU, gem_image, gem_xsize, gem_ysize);
#else
int row=gem_ysize>>1;
int cols=gem_xsize>>1;
short u,v;
unsigned char *pixel = gem_image;
unsigned char *pixel2 = gem_image + gem_xsize * gem_csize;
const int row_length = gem_xsize* gem_csize;
if(0==gem_upsidedown){
pixel=gem_image+row_length * (gem_ysize-1);
pixel2=gem_image+row_length * (gem_ysize-2);
}
while (row--){
int col=cols;
while(col--){
u=(pixel[0]-128)<<8; v=(pixel[2]-128)<<8;
*pU = u;
*pY++ = (pixel[1])<<7;
*pV = v;
*pY++ = (pixel[3])<<7;
*pY2++ = (pixel2[1])<<7;
*pY2++ = (pixel2[3])<<7;
pixel+=4;
pixel2+=4;
pU++; pV++;
}
if(gem_upsidedown){
pixel += row_length;
pixel2 += row_length;
} else {
pixel -= 3*row_length;
pixel2 -= 3*row_length;
}
pY += gem_xsize; pY2 += gem_xsize;
}
#endif // __VEC__
#ifdef __TIMING__
Microseconds(&end);
float seconds = (float)(end.lo - start.lo) / 1000000.f;
post("UYVYtoYV12 frame time = %f", seconds);
#endif
pdp_packet_pass_if_valid(m_pdpoutlet, &m_packet0);
} break;
// grey
case GL_LUMINANCE:
for ( py=0; py<gem_ysize; py++)
{
const t_int py2=(gem_upsidedown)?py:(gem_ysize-py);
for ( px=0; px<gem_xsize; px++)
{
*pY = gem_image[py2*gem_xsize*gem_csize + px*gem_csize] << 7;
pY++;
if ( (px%2==0) && (py%2==0) )
{
*pV++=128;
*pU++=128;
}
}
}
pdp_packet_pass_if_valid(m_pdpoutlet, &m_packet0);
break;
default:
post( "pix_2pdp: Sorry, wrong input type!" );
}
}
}
void pix_2pdp::obj_setupCallback(t_class *classPtr)
{
::post( "pix_2pdp : a bridge between a Gem pix and PDP/PiDiP, Georg Holzmann 2005 <grh@mur.at> & tigital 2005 <tigital@mac.com>" );
class_addmethod(classPtr, (t_method)&pix_2pdp::bangMessCallback,
gensym("bang"), A_NULL);
}
void pix_2pdp::bangMessCallback(void *data)
{
GetMyClass(data)->bangMess();
}
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