#include <stdio.h>#include <stdlib.h>#include <string.h>#include <sys/socket.h>#include <sys/stat.h>#include <sys/types.h>#include <netinet/in.h>#include <arpa/inet.h>#include <errno.h>#include <netdb.h>#include <sys/types.h>#include <sys/wait.h>#include <time.h>#include <sys/time.h>#include <signal.h>#include <unistd.h>#include <fcntl.h>#include <malloc.h>#include <sys/mman.h>#include <sys/ioctl.h>#include <signal.h>#define _AUDIO_ADPCM_ //#define _AUDIO_PCM_ //#define _AUDIO_UPCM_ //#define _AUDIO_APCM_ //define global varibleint AudioID; #define AUDIO_RECODE        // for recoder//#define AUDIO_PLAYBACK  // for audio playback#define DWORD unsigned long#define BYTE  unsigned char#define WORD unsigned short#define INDATA_T unsigned short#define OUTDATA_T unsigned longtypedef void AU_SEND(void* indata, OUTDATA_T* outdata,int nSrcSize, BYTE *private);#define R4(indata, x) (indata>>((x-1)*4))//***************************************************************//***  for debug **#define DEBUG 1#ifdef DEBUG#define PDEBUG(fmt, args...) printf(fmt,##args)#define KDEBUG(fmt, args...) printk("KDEBUG: "fmt, ##args)#else#define PDEBUG(fmt, args...)#define KDEBUG(fmt, args...)#endif//***************************************************************#define VIDEOBLOCKNUM   (1024)   #define VIDEOPACKSIZE    (528)#define VIDEOBUFSIZE  	(sizeof(char)*VIDEOBLOCKNUM*VIDEOPACKSIZE)#define LEAFLET 			(8)         //READ LEAFLET PACKAGE FORM VIDEO DRIVER#define APACKCOUNT 		(512)   //(AUDIOBUFSIZE/ADSAMP_PER_PACK)#define ADSAMP_PER_PACK ((508-4)*2+1) // 1009#define USAMP_PER_PACK (508)#define APCMPACKSIZE    (508)//#define UPCMPACKSIZE 	((508-4)*2+1)#define AUDIOBUFSIZE	(APACKCOUNT*ADSAMP_PER_PACK)//#define AUDIOPACKSIZE (PACKSIZE*8)#define DELAY (2)#define RECODERSIZE (4*120)#define	AUDIO_ENCODING_ULAW	(1)	/* ISDN u-law */#define	AUDIO_ENCODING_ALAW	(2)	/* ISDN A-law */#define	AUDIO_ENCODING_LINEAR (3)	/* PCM 2's-complement (0-center) */#define AUDIO_ENCODING_ADPCM (4) /*IMA ADPCM */#define BUFFERINC(x,y,z)  ((x+y)%z)  //z: num of package  y: inc  x: indicate//**************************************************typedef struct WTAudioStream{	int coding;	AU_SEND *AudioSend;	BYTE * destBuffer;	int 	   destBufSize;	int       nDestTag;	int nOutPSize;  //send package size		char *private;	}WTAudioStream;typedef struct WTMediaStream{	BYTE * srcBuffer;	int srcBufSize;	int nSrcTag;	int nInPSize;  //send package size	int nInBSize;	WORD ChnNo;       WORD MediaType;       WORD FrameSize;}WTMediaStream;// audio devicetypedef struct WTAudio_dev{	int major;  	int tx_irq; 	int tx_nBufT; 	int tx_nBufB;  	int tx_nDmaStart;	int tx_nDmaCount;	//unsigned long SysDelay;	unsigned long mmstart; //buffer base addr	unsigned long mmsize;  //buffer size = packsize*packcount	unsigned long dmasize; //dma buffer size = packsize*dmasize	unsigned long packsize;	//adpcm:1009  upcm: 508	unsigned long mmcount;  // mmsize/packsize	unsigned long dmacount; // dmssize/packsize#ifdef AUDIO_RECODE	int rx_nBufT;	int rx_nBufB;	//int rx_nDmaCount;	unsigned long rxmmstart; //mmstart+mmsize	unsigned long rxmmsize;  //	unsigned long rxpacksize; //	unsigned long rxmmcount; //rxmmsize/rxpacksize#endif}WTAudio_dev;typedef struct WTDevBufStatus{	int tx_nBufT;	int tx_nBufB;	int tx_nDmaStart;}WTDevBufStatus;//**************************//unsigned char *VBuffer;  //video buffer map from kernel (wtmpeg)//unsigned char *ABuffer; //audio buffer map from kernel  (wtaudio)//int    nVRD = 0; //indicate the read offset from video buffer base//int    nAWR = 0;//WTMediaStream VU_Stream = //					{NULL,VIDEOBUFSIZE,0,VIDEOPACKSIZE,LEAFLET,0,0,0};//**************************//*************************************//** audio ioctl ***#define IOC_MAGIC ('k')#define IOCASTOP _IO(IOC_MAGIC,0)#define IOCASTART _IO(IOC_MAGIC,1)#define IOCASPACKSIZE _IOW(IOC_MAGIC,2,int)#define IOCAGDEVBUFSTATUS _IOR(IOC_MAGIC,3,sizeof(WTDevBufStatus))#define IOCAGDEVSTATUS _IOR(IOC_MAGIC,4,sizeof(WTAudio_dev)) #define IOCASRXSTART _IO(IOC_MAGIC,5)//#define IOCASDELAYSIZE _IOW(IOC_MAGIC,5,int)//** video ioctl ***#define IOCVGSTATUE _IOR(IOC_MAGIC,0,int)/***************************************************///******************************************//***    globe  Function                                    ****//******************************************// Big-endian <==> Little-endian#ifdef _REVERSE_#define Reverse16(r)	(((WORD)r<<8)|((WORD)r>>8))#else#define Reverse16(r) (r)#endif//***   pointer for mem space#define	mcf32p(r)	((DWORD *) (r))#define	mcf16p(r)	((WORD *) (r))#define	mcf8p(r)	((BYTE *) (r))//***   pointer for mbar register#define	mcfReg32p(r)	(mcf32p(MCF_MBAR + (r)))#define	mcfReg16p(r)	(mcf16p(MCF_MBAR + (r)))#define	mcfReg8p(r) 	(mcf8p(MCF_MBAR + (r)))#ifdef _MCF5249_//***   pointer for 5249 mbar2 register#define	mcf2Reg32p(r)	(mcf32p(MCF_MBAR2 + (r)))#define	mcf2Reg16p(r)	(mcf16p(MCF_MBAR2 + (r)))#define	mcf2Reg8p(r) 	(mcf8p(MCF_MBAR2 + (r)))#endif/**********************************************************//***   auido  decoder/encoder                                                         */#define	AUDIO_ENCODING_ULAW	(1)	/* ISDN u-law */#define	AUDIO_ENCODING_ALAW	(2)	/* ISDN A-law */#define	AUDIO_ENCODING_LINEAR (3)	/* PCM 2's-complement (0-center) */#define AUDIO_ENCODING_ADPCM (4) /*IMA ADPCM *//* * g711.c * * u-law, A-law and linear PCM conversions. */#define	SIGN_BIT	(0x80)		/* Sign bit for a A-law byte. */#define	QUANT_MASK	(0xf)		/* Quantization field mask. */#define	NSEGS		(8)		/* Number of A-law segments. */#define	SEG_SHIFT	(4)		/* Left shift for segment number. */#define	SEG_MASK	(0x70)		/* Segment field mask. */#define CLIP            (8159)static short seg_end[8] = {0xFF, 0x1FF, 0x3FF, 0x7FF,			    0xFFF, 0x1FFF, 0x3FFF, 0x7FFF};static short seg_aend[8] = {0x1F, 0x3F, 0x7F, 0xFF,			    0x1FF, 0x3FF, 0x7FF, 0xFFF};static short seg_uend[8] = {0x3F, 0x7F, 0xFF, 0x1FF,			    0x3FF, 0x7FF, 0xFFF, 0x1FFF};/* copy from CCITT G.711 specifications */unsigned char _u2a[128] = {			/* u- to A-law conversions */	1,	1,	2,	2,	3,	3,	4,	4,	5,	5,	6,	6,	7,	7,	8,	8,	9,	10,	11,	12,	13,	14,	15,	16,	17,	18,	19,	20,	21,	22,	23,	24,	25,	27,	29,	31,	33,	34,	35,	36,	37,	38,	39,	40,	41,	42,	43,	44,	46,	48,	49,	50,	51,	52,	53,	54,	55,	56,	57,	58,	59,	60,	61,	62,	64,	65,	66,	67,	68,	69,	70,	71,	72,	73,	74,	75,	76,	77,	78,	79,	81,	82,	83,	84,	85,	86,	87,	88,	89,	90,	91,	92,	93,	94,	95,	96,	97,	98,	99,	100,	101,	102,	103,	104,	105,	106,	107,	108,	109,	110,	111,	112,	113,	114,	115,	116,	117,	118,	119,	120,	121,	122,	123,	124,	125,	126,	127,	128};unsigned char _a2u[128] = {			/* A- to u-law conversions */	1,	3,	5,	7,	9,	11,	13,	15,	16,	17,	18,	19,	20,	21,	22,	23,	24,	25,	26,	27,	28,	29,	30,	31,	32,	32,	33,	33,	34,	34,	35,	35,	36,	37,	38,	39,	40,	41,	42,	43,	44,	45,	46,	47,	48,	48,	49,	49,	50,	51,	52,	53,	54,	55,	56,	57,	58,	59,	60,	61,	62,	63,	64,	64,	65,	66,	67,	68,	69,	70,	71,	72,	73,	74,	75,	76,	77,	78,	79,	79,	80,	81,	82,	83,	84,	85,	86,	87,	88,	89,	90,	91,	92,	93,	94,	95,	96,	97,	98,	99,	100,	101,	102,	103,	104,	105,	106,	107,	108,	109,	110,	111,	112,	113,	114,	115,	116,	117,	118,	119,	120,	121,	122,	123,	124,	125,	126,	127};static intsearch(	int		val,	short		*table,	int		size){	int		i;	for (i = 0; i < size; i++) {		if (val <= *table++)			return (i);	}	return (size);}/* * linear2alaw() - Convert a 16-bit linear PCM value to 8-bit A-law * * linear2alaw() accepts an 16-bit integer and encodes it as A-law data. * *		Linear Input Code	Compressed Code *	------------------------	--------------- *	0000000wxyza			000wxyz *	0000001wxyza			001wxyz *	000001wxyzab			010wxyz *	00001wxyzabc			011wxyz *	0001wxyzabcd			100wxyz *	001wxyzabcde			101wxyz *	01wxyzabcdef			110wxyz *	1wxyzabcdefg			111wxyz * * For further information see John C. Bellamy's Digital Telephony, 1982, * John Wiley & Sons, pps 98-111 and 472-476. */unsigned charlinear2alaw(	int		pcm_val)	/* 2's complement (16-bit range) */{	int		mask;	int		seg;	unsigned char	aval;	if (pcm_val >= 0) {		mask = 0xD5;		/* sign (7th) bit = 1 */	} else {		mask = 0x55;		/* sign bit = 0 */		pcm_val = -pcm_val - 8;	}	/* Convert the scaled magnitude to segment number. */	seg = search(pcm_val, seg_end, 8);	/* Combine the sign, segment, and quantization bits. */	if (seg >= 8)		/* out of range, return maximum value. */		return (0x7F ^ mask);	else {		aval = seg << SEG_SHIFT;		if (seg < 2)			aval |= (pcm_val >> 4) & QUANT_MASK;		else			aval |= (pcm_val >> (seg + 3)) & QUANT_MASK;		return (aval ^ mask);	}}/* * alaw2linear() - Convert an A-law value to 16-bit linear PCM * */intalaw2linear(	unsigned char	a_val){	int		t;	int		seg;	a_val ^= 0x55;	t = (a_val & QUANT_MASK) << 4;	seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT;	switch (seg) {	case 0:		t += 8;		break;	case 1:		t += 0x108;		break;	default:		t += 0x108;		t <<= seg - 1;	}	return ((a_val & SIGN_BIT) ? t : -t);}#define	BIAS		(0x84)		/* Bias for linear code. *//* * linear2ulaw() - Convert a linear PCM value to u-law * * In order to simplify the encoding process, the original linear magnitude * is biased by adding 33 which shifts the encoding range from (0 - 8158) to * (33 - 8191). The result can be seen in the following encoding table: * *	Biased Linear Input Code	Compressed Code *	------------------------	--------------- *	00000001wxyza			000wxyz *	0000001wxyzab			001wxyz *	000001wxyzabc			010wxyz *	00001wxyzabcd			011wxyz *	0001wxyzabcde			100wxyz *	001wxyzabcdef			101wxyz *	01wxyzabcdefg			110wxyz *	1wxyzabcdefgh			111wxyz * * Each biased linear code has a leading 1 which identifies the segment * number. The value of the segment number is equal to 7 minus the number * of leading 0's. The quantization interval is directly available as the * four bits wxyz.  * The trailing bits (a - h) are ignored. * * Ordinarily the complement of the resulting code word is used for * transmission, and so the code word is complemented before it is returned. * * For further information see John C. Bellamy's Digital Telephony, 1982, * John Wiley & Sons, pps 98-111 and 472-476. */static inline unsigned charlinear2ulaw(short pcm_val)	/* 2's complement (16-bit range) */{    short		mask;    short		seg;    unsigned char	uval;        /* Get the sign and the magnitude of the value. */    pcm_val = pcm_val >> 2;    if (pcm_val < 0) {        pcm_val = -pcm_val;        mask = 0x7F;    } else {        mask = 0xFF;    }    if ( pcm_val > CLIP ) pcm_val = CLIP;		/* clip the magnitude */    pcm_val += (BIAS >> 2);        /* Convert the scaled magnitude to segment number. */    seg = search(pcm_val, seg_uend, 8);        /*     * Combine the sign, segment, quantization bits;     * and complement the code word.     */    if (seg >= 8)		/* out of range, return maximum value. */        return (unsigned char) (0x7F ^ mask);    else {        uval = (unsigned char) (seg << 4) | ((pcm_val >> (seg + 1)) & 0xF);        return (uval ^ mask);    }}/* * ulaw2linear() - Convert a u-law value to 16-bit linear PCM * * First, a biased linear code is derived from the code word. An unbiased * output can then be obtained by subtracting 33 from the biased code. * * Note that this function expects to be passed the complement of the * original code word. This is in keeping with ISDN conventions. */intulaw2linear(	unsigned char	u_val){	int		t;	/* Complement to obtain normal u-law value. */	u_val = ~u_val;	/*	 * Extract and bias the quantization bits. Then	 * shift up by the segment number and subtract out the bias.	 */	t = ((u_val & QUANT_MASK) << 3) + BIAS;	t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT;	return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));}/* A-law to u-law conversion */unsigned charalaw2ulaw(	unsigned char	aval){	aval &= 0xff;	return ((aval & 0x80) ? (0xFF ^ _a2u[aval ^ 0xD5]) :	    (0x7F ^ _a2u[aval ^ 0x55]));}/* u-law to A-law conversion */unsigned charulaw2alaw(	unsigned char	uval){	uval &= 0xff;	return ((uval & 0x80) ? (0xD5 ^ (_u2a[0xFF ^ uval] - 1)) :	    (0x55 ^ (_u2a[0x7F ^ uval] - 1)));}//*******************************************/**    IMA ADPCM*/#define CLAMP_TO_SHORT(value) \if (value > 32767) \    value = 32767; \else if (value < -32768) \    value = -32768; \/* Intel ADPCM step variation table */static int indexTable[16] = {    -1, -1, -1, -1, 2, 4, 6, 8,    -1, -1, -1, -1, 2, 4, 6, 8,};static int stepsizeTable[89] = {    7, 8, 9, 10, 11, 12, 13, 14, 16, 17,    19, 21, 23, 25, 28, 31, 34, 37, 41, 45,    50, 55, 60, 66, 73, 80, 88, 97, 107, 118,    130, 143, 157, 173, 190, 209, 230, 253, 279, 307,