tijpeg.c

用于DSP下摄像机的图像抓取、图像处理和传输、以及与上位机TCP/IP通信的工程文件。基于Texas Instruments Code Composer Studio实现。

#include "std.h"
#include "celljpegenc_ti.h"
#include "acpy2_6x1x.h"
#include "dman.h"
#include "chan.h"
#include "csl.h"
#include "csl_cache.h"
#include "ijpegenc.h"
#include "ijpegdec.h"

static ICC_Handle  inputIcc;
static ICC_Handle  outputIcc;
static ICELL_Obj cell = ICELL_DEFAULT;
static CHAN_Obj chan;
//static IJPEGENC_Params jpegencParams;
extern far IJPEGENC_Fxns JPEGENC_TI_IJPEGENC;
static int s_nWidth, s_nHeight;
static int s_nOutHeight;

#define  HC 1600
#define  VC 1200

#define  H  1600
#define  V  1200

IJPEGENC_Params IJPEGENC_PARAMS =
{
    sizeof(IJPEGENC_Params),
    8, /* unsigned int  sample_prec; */
    3, /* unsigned int  num_comps; */
    2, /* unsigned int  num_qtables; */
    0, /* unsigned int  interleaved; */
    0x01120112, /* unsigned int  formatflag for 4:2:0; */
    100, /* unsigned int  quality; */
    V, (V/2), (V/2), /* unsigned int  num_lines 4:2:0; */
    H, (H/2), (H/2), /* unsigned int  num_samples; */
    HC,(HC/2),(HC/2) /*unsigned int pitch;*/
};

/*
 *  ======== JPEGDEC_PARAMS ========
 *  This constant structure defines the default parameters for JPEGDEC objects
 */
IJPEGDEC_Params IJPEGDEC_PARAMS = 
{
    sizeof(IJPEGDEC_Params),
    HC, (HC >>1), (HC >> 1)

};
	
/////////////////////////////////////////////////////////////////
void JPEG_init(int nWidth, int nHeight, int nIntHeapNum, int nExtHeapNum, unsigned int nQuality)
{	

	s_nWidth = nWidth;
	s_nHeight = nHeight;
	s_nOutHeight = nHeight & 0xFFFFFFF0;
	
	IJPEGENC_PARAMS.quality = nQuality;
	IJPEGENC_PARAMS.numLines[0] = s_nOutHeight;
	IJPEGENC_PARAMS.numLines[1] = s_nOutHeight >> 1;
	IJPEGENC_PARAMS.numLines[2] = s_nOutHeight >> 1;
	IJPEGENC_PARAMS.numSamples[0] = s_nWidth; 
	IJPEGENC_PARAMS.numSamples[1] = s_nWidth >> 1;
	IJPEGENC_PARAMS.numSamples[2] = s_nWidth >> 1;
	IJPEGENC_PARAMS.pitch[0] = s_nWidth; 
	IJPEGENC_PARAMS.pitch[1] = s_nWidth >> 1;
	IJPEGENC_PARAMS.pitch[2] = s_nWidth >> 1;
	
    ACPY2_6X1X_init();
    DMAN_init();
    DMAN_setup(nIntHeapNum);

    /* initialize RF5 modules */
    CHAN_init();	//这个函数不执行任何操作
    ICC_init();		//这个函数不执行任何操作

    /* setup chan module Ratna - Modified */
    CHAN_setup(nIntHeapNum, nExtHeapNum, nIntHeapNum, 1, NULL, NULL);

    JPEGENC_TI_init();
    
//    jpegencParams = IJPEGENC_PARAMS;
    
    cell.name = "JPEGENC";
    cell.cellFxns = &JPEGENC_CELLFXNS;
    cell.algFxns = (IALG_Fxns *)&JPEGENC_TI_IJPEGENC;
    cell.algParams = (IALG_Params *)&IJPEGENC_PARAMS;
    cell.scrBucketIndex = 0;
    
    //inputIcc->obj.buffer  = NULL;
    //inputIcc->obj.nmaus   = 0;
    //inputIcc->obj.objType = ICC_LINEAROBJ(1);
	inputIcc  = (ICC_Handle)ICC_linearCreate(NULL, 0);
    //outputIcc->obj.buffer  = NULL;
    //outputIcc->obj.nmaus   = 0;
    //outputIcc->obj.objType = ICC_LINEAROBJ(1);	
	outputIcc = (ICC_Handle)ICC_linearCreate(NULL, 0);
	
	CHAN_regCell(&cell, &inputIcc, 1, &outputIcc, 1);
	
    cell.algParams = (IALG_Params *)&IJPEGENC_PARAMS;
    
	CHAN_open(&chan, &cell, 1, NULL);
}  
/////////////////////////////////////////////////////////////////


static void yuyv2yyyyuv(unsigned char *pYUYV, unsigned char *pY, unsigned char *pU, unsigned char *pV, int nWidth, int nHeight)
{
	int i, j;
	for(i = 0; i < nHeight; i += 2)
	{
		//y u
		for(j = 0; j < nWidth; j += 4)
		{
			pY[0] = pYUYV[0];
			pY[1] = pYUYV[2];
			pY[2] = pYUYV[4];
			pY[3] = pYUYV[6];
			pU[0] = pYUYV[1];
			pU[1] = pYUYV[5];
			
			pYUYV += 8;
			pY += 4;
			pU += 2;
		}
		//y v
		for(j = 0; j < nWidth; j += 4)
		{
			pY[0] = pYUYV[0];
			pY[1] = pYUYV[2];
			pY[2] = pYUYV[4];
			pY[3] = pYUYV[6];
			pV[0] = pYUYV[3];
			pV[1] = pYUYV[7];
			
			pYUYV += 8;
			pY += 4;
			pV += 2;
		}		
	}
}

void JPEG_enc(char *pInput, char *pTemp, int *pLen)
{
	void *inBuf[3];
	void *outBuf[3];
	static unsigned int framenum = 0;
	
	framenum ++;

    inBuf[0] = pTemp;
    inBuf[1] = pTemp + s_nWidth * s_nHeight;
    inBuf[2] = pTemp + (s_nWidth * s_nHeight * 5 >> 2);
	
	CACHE_clean(CACHE_L2ALL, NULL, 0);
	
	yuyv2yyyyuv((unsigned char *)pInput, (unsigned char *)inBuf[0], (unsigned char *)inBuf[1], (unsigned char *)inBuf[2], s_nWidth, s_nOutHeight);
	chan.state = CHAN_ACTIVE;
	
	ICC_setBuf(chan.cellSet[0].inputIcc[0], inBuf, sizeof(void *) * 3);
	
	outBuf[0] = pLen;
	outBuf[1] = pInput;
	
	ICC_setBuf(chan.cellSet[0].outputIcc[0], outBuf, sizeof(Void *) * 2);
	
	CACHE_clean(CACHE_L2ALL, NULL, 0);
	
	CHAN_execute(&chan, framenum);
	
//	chan.state = CHAN_INACTIVE;
}

void JPEG_control(int nWidth, int nHeight, unsigned int nQuality)
{
	s_nWidth = nWidth;
	s_nHeight = nHeight;
	s_nOutHeight = s_nHeight & 0xFFFFFFF0;
	
	if ((nQuality > 0) && (nQuality <= 100))
	{
		IJPEGENC_PARAMS.quality = nQuality;
		IJPEGENC_PARAMS.numLines[0] = s_nOutHeight;
		IJPEGENC_PARAMS.numLines[1] = s_nOutHeight >> 1;
		IJPEGENC_PARAMS.numLines[2] = s_nOutHeight >> 1;
		IJPEGENC_PARAMS.numSamples[0] = s_nWidth; 
		IJPEGENC_PARAMS.numSamples[1] = s_nWidth >> 1;
		IJPEGENC_PARAMS.numSamples[2] = s_nWidth >> 1;
		IJPEGENC_PARAMS.pitch[0] = s_nWidth; 
		IJPEGENC_PARAMS.pitch[1] = s_nWidth >> 1;
		IJPEGENC_PARAMS.pitch[2] = s_nWidth >> 1;
			
		cell.cellFxns->cellControl
		(
			&cell,
			(IALG_Cmd)(IJPEG_SETSTATUS),
			(IALG_Status *)(&IJPEGENC_PARAMS)
		);
	}	
}