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/*
Psychtoolbox3/Source/Common/SCREENPixelSizes.c
AUTHORS:
Allen.Ingling@nyu.edu awi
PLATFORMS:
This file should build on any platform.
HISTORY:
12/03/02 awi Created.
DESCRIPTION:
Return a list of the valid pixel sizes for the specified screen.
TO DO:
*/
#include "Screen.h"
// If you change the useString then also change the corresponding synopsis string in ScreenSynopsis.c
static char useString[] = "pixelSizes=Screen('PixelSizes', windowPtrOrScreenNumber)";
static char synopsisString[] =
"List all possible pixelSizes for this screen available at the current height and width settings. "
"pixelSizes refer to the color depth of single pixels in bits - also known as bpp or bits per pixel. "
"If you change height and with settings the avaialable depths might change.";
static char seeAlsoString[] = "Resolutions Resolution";
PsychError SCREENPixelSizes(void)
{
int screenNumber;
PsychDepthType depths;
//all sub functions should have these two lines
PsychPushHelp(useString, synopsisString, seeAlsoString);
if(PsychIsGiveHelp()){PsychGiveHelp();return(PsychError_none);};
//check to see if the user supplied superfluous arguments
PsychErrorExit(PsychCapNumOutputArgs(1));
PsychErrorExit(PsychCapNumInputArgs(1));
//get specified screen number. This also sanity checks against the number of displays.
PsychCopyInScreenNumberArg(kPsychUseDefaultArgPosition, TRUE, &screenNumber);
//get the screen depths
PsychInitDepthStruct(&depths);
PsychGetScreenDepths(screenNumber, &depths);
//Allocate a return matrix and load it with the depth values.
PsychCopyOutDepthArg(1, FALSE, &depths);
return(PsychError_none);
}
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