#include "stdafx.h"
#include "stddef.h"
#include "string.h"
#include "PortabilityLayer.h"

/// Implementation of a logging function.  See 'SetLoggingCallback' function.
void Logit(String it)
{
	printf("%s\n", it);
}

void Usage(_TCHAR* arg0)
{
	printf("Purpose: Downloads 1+ images to image frame buffer memory\n");
	printf("%s file1 [file2 | ...]\n", arg0);
	printf("Usage:\n");
	printf("  Input one or more filenames to download to the DLP LightCommander\n");
	printf("  image frame buffer memory.\n");
	printf("  All input files must be DBI-formatted files.  These files are created\n");
	printf("  by the Application SW written by LOGIC.  See documentation for further details.\n");
}

// DBI image utility function
int ReadDbiImageHdr_NBPP(const char* filename);


int _tmain(int argc, _TCHAR* argv[])
{
	Byte loglvl = 0;
	Boolean stopOnError = 1;
	Status rc;
	int i;
	unsigned char imgcnt = 4;
	int nbpp   = -1;
	Double intensityPerCent;
	int j;


#define MAX_IMAGES  64
	char file[MAX_IMAGES][256];  // fyi: 64 is just a convenient limit for this driver
	UInt16 imgOrderLUT[MAX_IMAGES];


	for(i=0; i < MAX_IMAGES; i++) {
		file[i][0] = '\0'; // add NULL terminator
		imgOrderLUT[i] = 0;
	}


	strcpy(file[0],"C:\\Documents and Settings\\Dragon\\My Documents\\LightCommander Control\\CodingTest\\Solutions\\Test Batchfile for Coding\\Images\\duijiao.dbi");
	strcpy(file[1],"C:\\Documents and Settings\\Dragon\\My Documents\\LightCommander Control\\CodingTest\\Solutions\\Test Batchfile for Coding\\Images\\dxctest1.dbi");
	strcpy(file[2],"C:\\Documents and Settings\\Dragon\\My Documents\\LightCommander Control\\newgreen\\Solutions\\12\\Images\\12NO.1.dbi");
	strcpy(file[3],"C:\\Documents and Settings\\Dragon\\My Documents\\LightCommander Control\\newgreen\\Solutions\\12\\Images\\12NO.2.dbi");



	// REQUIRED INITIALIZATION...
	if((rc = InitPortabilityLayer(loglvl+1, loglvl, Logit)) != STAT_OK) {
		printf("ERROR running InitPortabilityLayer (ret code = %d)\n", (int)rc);
		return(1);
	}
	printf("%45s:  ret code = OK\n","InitPortabilityLayer");

	// 1. Program image order LUT...
	nbpp = ReadDbiImageHdr_NBPP(file[0]);
	for(i=0; i < imgcnt; i++)
		imgOrderLUT[i] = i;  // maintain the same image order as was passed into this app...

	if((rc = DLP_RegIO_WriteImageOrderLut((Byte)nbpp, imgOrderLUT, (UInt16)imgcnt)) != STAT_OK) {
		printf("ERROR running WriteImageOrderTable (ret code = %d)\n", (int)rc);
		return(1);
	}


	// 2. Download images...
	for(i=0; i < imgcnt; i++)
	{
		printf("Downloading image# %3d:  %s  ...\n", i, file[i]);
		if((rc = WriteExternalImage(file[i], i)) != STAT_OK) {
			printf("ERROR running WriteExternalImage (ret code = %d)\n", (int)rc);
			return(1);
		}
	}


	if((rc = DLP_Display_DisplayPatternAutoStepForSinglePass()) != 0) {
		printf("ERROR running DisplayPatternAutoStepForSinglePass (ret code = %d)\n", (int)rc);
		return(1);
	}

	return 0;
}

// *Temporary* function used to read the NBPP field from the header of a DBI Image file.
// This function has no guarantees of working in the future and should be used 
// at your own risk.  It exists here since a similar function is not available as an
// exported function in the portability DLL.
int ReadDbiImageHdr_NBPP(const char* filename)
{
	unsigned char bpp=0;
	FILE* pFile = NULL;
	int nBytesToRead = 0;
	int nBytesInFile = 0;
	int nBytesRead = 0;

	typedef struct
	{
		char	 signature[4];
		UInt32	 cbSize;
		UInt32	 rows;
		UInt32	 cols;
		UInt32	 bpp;
		UInt16	 data[1];

	} dbiImage;
	dbiImage dbi;
	nBytesToRead = offsetof(dbiImage,bpp);   // get byte offset to start of "bpp"
	nBytesToRead += sizeof(UInt32);

	if((pFile = fopen(filename, "rb")) == NULL)
	{
		printf("File open error on %s\n", filename);
		printf("Hint: check spelling or path\n");
		return -1;
	}
	fseek(pFile, 0, SEEK_END);
	nBytesInFile = ftell(pFile);
	//printf("#bytes in file = %d\n", nBytesInFile);
	if(nBytesInFile < nBytesToRead) {
		printf("Insufficent data in file to read BPP parameter; must be at least %d bytes\n", nBytesToRead);
		return -1;
	}
	fseek(pFile, 0, SEEK_SET);
	nBytesRead = (long)fread((void*)&dbi, 1, nBytesToRead, pFile);
	if(nBytesRead != nBytesToRead) {
		printf("Error: did not read %d bytes...only read % bytes\n", nBytesToRead, nBytesRead);
		return -1;
	}
	return (int)dbi.bpp;
}