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/*
EyelinkImageTransfer.c
AUTHORS:
nuha@sr-research.com nj
li@sr-research.com lj
PLATFORMS:
All.
HISTORY:
10/10/10 nj Created.
05/24/11 mk Cleanup.
12/20/13 lj fixed EyelinkImageTransfer for crash due to unallocated memory in EYEBITMAP.
*/
#include "PsychEyelink.h"
#include "bitmap.h"
// Help strings
static char useString[] = "[status] = Eyelink('ImageTransfer', imagePath [, xPosition=0][, yPosition=0][, width=0][, height=0][, trackerXPosition=0][, trackerYPosition=0][, xferoptions=0]);";
static char synopsisString[] =
"This function transfers a 24-bit or 32-bit bitmap to the tracker PC as backdrop for gaze cursors.\n"
"'width' and 'height' define image size. If set to zero will use bitmap height and width.\n"
"'xferoptions' Transfer options set with bitwise OR of the following constants, determines how bitmap is processed:\n"
" 0 Averaging combined pixels\n"
" 1 Choosing darkest and keep thin dark lines\n"
" 2 Choosing darkest and keep thin white lines and control how bitmap size is reduced to fit tracker display\n"
" 4 Maximizes contrast for clearest image\n"
" 8 Disables the dithering of the image\n"
" 16 Converts the image to grayscale (grayscale works best for EyeLinkI,text,etc.)\n";
static char seeAlsoString[] = "";
PsychError EyelinkImageTransfer(void)
{
int iStatus = -1;
int xs = 0;
int ys = 0;
int width = 0;
int height = 0;
int xd = 0;
int yd = 0;
int i;
int xferoptions = 0;
char *filename;
int pitch,j,size;
int pitch24, pitch32;
EYEBITMAP bmp;
BITMAPINFO *BitmapInfo; /* Bitmap information */
psych_uint8 *BitmapBits; /* Bitmap data */
#if PSYCH_SYSTEM == PSYCH_WINDOWS
BYTE* pPixels;
BYTE *dest;
BYTE *src;
BYTE* pDest;
BYTE* pReturn;
#else
byte* pPixels;
byte* dest;
byte* src;
byte* pDest;
byte* pReturn;
#endif
PsychPushHelp(useString, synopsisString, seeAlsoString);
// Output help if asked
if(PsychIsGiveHelp()) {
PsychGiveHelp();
return(PsychError_none);
}
// Check arguments
PsychErrorExit(PsychCapNumInputArgs(8));
PsychErrorExit(PsychRequireNumInputArgs(1));
PsychErrorExit(PsychCapNumOutputArgs(1));
// Verify eyelink is up and running
EyelinkSystemIsConnected();
EyelinkSystemIsInitialized();
// assign arguments
PsychAllocInCharArg(1, TRUE, &filename);
PsychCopyInIntegerArg(2, FALSE, &xs);
PsychCopyInIntegerArg(3, FALSE, &ys);
PsychCopyInIntegerArg(4, FALSE, &width);
PsychCopyInIntegerArg(5, FALSE, &height);
PsychCopyInIntegerArg(6, FALSE, &xd);
PsychCopyInIntegerArg(7, FALSE, &yd);
PsychCopyInIntegerArg(8, FALSE, &xferoptions);
BitmapBits = LoadDIBitmap(filename, &BitmapInfo);
if (BitmapBits == NULL){
PsychErrorExitMsg(PsychError_user, "Loading Bitmap failed\n");
}
bmp.w = (int) BitmapInfo->bmiHeader.biWidth;
bmp.h = (int) BitmapInfo->bmiHeader.biHeight;
bmp.depth = (int) 32;
bmp.pitch = (int) bmp.w * 4;
pPixels = BitmapBits;
size = (((int) BitmapInfo->bmiHeader.biBitCount * (int) BitmapInfo->bmiHeader.biWidth + 31) / 32) * 4 * bmp.h;
// invert
pitch24 = ((abs(bmp.w) * 24 + 31) / 32) * 4;
pitch32 = abs(bmp.w) * 4;
pDest = (byte*) PsychMallocTemp(sizeof(byte) * pitch32 * abs(bmp.h));
pReturn = (byte*) PsychMallocTemp(sizeof(byte) * pitch32 * abs(bmp.h));
if (!pDest || !pReturn) PsychErrorExitMsg(PsychError_outofMemory, "Out of memory while trying to load bitmap!");
memset(pDest, 0, pitch32 * abs(bmp.h));
memset(pReturn, 0, pitch32 * abs(bmp.h));
if ((int) BitmapInfo->bmiHeader.biBitCount == 24) {
for( i=0; i<abs(bmp.h); ++i)
for( j=0; j<abs(bmp.w); ++j) {
pDest[i*pitch32+j*4+0] = BitmapBits[i*pitch24+j*3+0];
pDest[i*pitch32+j*4+1] = BitmapBits[i*pitch24+j*3+1];
pDest[i*pitch32+j*4+2] = BitmapBits[i*pitch24+j*3+2];
pDest[i*pitch32+j*4+3] = 0;
}
if(bmp.w>0 && bmp.h>0) {
pitch = bmp.w*4; // for 32bits img
for(i=0; i<bmp.h; ++i) {
dest = pReturn +((bmp.h-1-i)*(pitch));
src = pDest +(i*pitch);
for(j=0; j<pitch; ++j)
dest[j]= src[j];
}
}
else {
memcpy(pReturn, pDest, abs(bmp.w)*4*abs(bmp.h));
}
bmp.pixels = pReturn;
} else {
if(bmp.w>0 && bmp.h>0) {
pitch = bmp.w*4;
for(i=0; i<bmp.h; ++i)
{
dest = pReturn +((bmp.h-1-i)*(pitch));
src = pPixels +(i*pitch);
for(j=0; j<pitch; ++j)
dest[j]= src[j];
}
} else {
memcpy(pReturn, pPixels, abs(bmp.w)*4*abs(bmp.h));
}
bmp.pixels = pReturn;
}
bmp.format = (EYEPIXELFORMAT* ) PsychMallocTemp(sizeof(EYEPIXELFORMAT));
memset(bmp.format, 0, sizeof(EYEPIXELFORMAT));
bmp.format->Rmask = 0x000000ff;
bmp.format->Gmask = 0x0000ff00;
bmp.format->Bmask = 0x00ff0000;
bmp.format->Amask = 0xff000000;
iStatus = el_bitmap_to_backdrop(&bmp, xs, ys, width, height, xd, yd, xferoptions);
if (BitmapInfo) {
free(BitmapInfo);
if (BitmapBits) free(BitmapBits);
}
if(bmp.format)
{
if(bmp.format) PsychFreeTemp(bmp.format);
}
PsychCopyOutDoubleArg(1, FALSE, iStatus);
return(PsychError_none);
}
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