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📄 gspcadecoder.c

📁 Linux下面摄像头最新源代码:支持200多中摄像头
💻 C
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    if (tmp > 43)	return 0xff;    refill(bitfill);    return tab[tab1[tmp]];}static int fun_D(int *bitfill, int gkw){    if (gkw == 0xfd) {	if (nbits(bitfill, 1) == 0)	    return 12;	else	    return -13;    }    if (gkw == 0xfc) {	if (nbits(bitfill, 1) == 0)	    return 13;	else	    return -14;    }    if (gkw == 0xfe) {	switch (nbits(bitfill, 2)) {	case 0:	    return 14;	case 1:	    return -15;	case 2:	    return 15;	case 3:	    return -16;	}    }    if (gkw == 0xff) {	switch (nbits(bitfill, 3)) {	case 4:	    return 16;	case 5:	    return -17;	case 6:	    return 17;	case 7:	    return -18;	case 2:	    return _nbits(bitfill, 1) ? 0xed : 0x12;	case 3:	    (*bitfill)--;	    return 18;	}	return 0xff;    }    return gkw;}static int fun_E(int cur_byte, int *bitfill){    static int tab0[] = { 0, -1, 1, -2, 2, -3, 3, -4 };    static int tab1[] = { 4, -5, 5, -6, 6, -7, 7, -8 };    static int tab2[] = { 8, -9, 9, -10, 10, -11, 11, -12 };    static int tab3[] = { 12, -13, 13, -14, 14, -15, 15, -16 };    static int tab4[] = { 16, -17, 17, -18, 18, -19, 19, -19 };    if ((cur_byte & 0xf0) >= 0x80) {	*bitfill -= 4;	return tab0[(cur_byte >> 4) & 7];    } else if ((cur_byte & 0xc0) == 0x40) {	*bitfill -= 5;	return tab1[(cur_byte >> 3) & 7];    } else if ((cur_byte & 0xe0) == 0x20) {	*bitfill -= 6;	return tab2[(cur_byte >> 2) & 7];    } else if ((cur_byte & 0xf0) == 0x10) {	*bitfill -= 7;	return tab3[(cur_byte >> 1) & 7];    } else if ((cur_byte & 0xf8) == 8) {	*bitfill -= 8;	return tab4[cur_byte & 7];    }    return 0xff;}static int fun_F(int cur_byte, int *bitfill){    *bitfill -= 5;    switch (cur_byte & 0xf8) {    case 0x80:	return 0;    case 0x88:	return -1;    case 0x90:	return 1;    case 0x98:	return -2;    case 0xa0:	return 2;    case 0xa8:	return -3;    case 0xb0:	return 3;    case 0xb8:	return -4;    case 0xc0:	return 4;    case 0xc8:	return -5;    case 0xd0:	return 5;    case 0xd8:	return -6;    case 0xe0:	return 6;    case 0xe8:	return -7;    case 0xf0:	return 7;    case 0xf8:	return -8;    }    *bitfill -= 1;    switch (cur_byte & 0xfc) {    case 0x40:	return 8;    case 0x44:	return -9;    case 0x48:	return 9;    case 0x4c:	return -10;    case 0x50:	return 10;    case 0x54:	return -11;    case 0x58:	return 11;    case 0x5c:	return -12;    case 0x60:	return 12;    case 0x64:	return -13;    case 0x68:	return 13;    case 0x6c:	return -14;    case 0x70:	return 14;    case 0x74:	return -15;    case 0x78:	return 15;    case 0x7c:	return -16;    }    *bitfill -= 1;    switch (cur_byte & 0xfe) {    case 0x20:	return 16;    case 0x22:	return -17;    case 0x24:	return 17;    case 0x26:	return -18;    case 0x28:	return 18;    case 0x2a:	return -19;    case 0x2c:	return 19;    }    *bitfill += 7;    return 0xff;}staticint internal_spca561_decode(int width, int height, unsigned char *inbuf, unsigned char *outbuf)	// {{{{    // buffers    static int accum[8 * 8 * 8];    static int i_hits[8 * 8 * 8];    const static int nbits_A[] =	{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 0, 0, 7, 7, 7, 7,	7, 7, 7, 7, 7,	7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,	5, 5, 5, 5, 5,	5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,    };    const static int tab_A[] =	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 11, -11, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10,	255, 254, -4,	-4, -5, -5, -6, -6, -7, -7, -8, -8, -9, -9, -10, -10, -1, -1, -1,	-1, -1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, -1, -1, -1, -1, -1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,	3, 3, 3,	-2, -2, -2, -2, -2, -2, -2, -2, -3, -3, -3, -3, -3, -3, -3, -3, 1,	1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1,	1    };    const static int nbits_B[] =	{ 0, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4,	4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,    };    const static int tab_B[] =	{ 0xff, -4, 3, 3, -3, -3, -3, -3, 2, 2, 2, 2, 2, 2, 2, 2, -2,	-2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, 1, 1,	1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0,    };    const static int nbits_C[] =	{ 0, 0, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5,	5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,	4, 4, 4, 4, 4,	4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, 2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,    };    const static int tab_C[] =	{ 0xff, 0xfe, 6, -7, 5, 5, -6, -6, 4, 4, 4, 4, -5, -5, -5, -5,	3, 3, 3, 3, 3, 3, 3, 3, -4, -4, -4, -4, -4, -4, -4, -4, 2, 2, 2, 2,	2, 2, 2,	2, 2, 2, 2, 2, 2, 2, 2, 2, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,	-3, -3, -3,	-3, -3, -3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -2, -2, -2, -2, -2, -2, -2, -2, -2,	-2, -2, -2,	-2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,	-2, -2,	-2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1,	-1, -1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,    };    const static int nbits_D[] =	{ 0, 0, 0, 0, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6,	6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,	5, 5, 5, 5, 5,	5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4,	4, 4, 4, 4, 4,	4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,	4, 4, 4, 4, 4,	4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,	4, 4, 4, 4, 4,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,	3, 3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3    };    const static int tab_D[] =	{ 0xff, 0xfe, 0xfd, 0xfc, 10, -11, 11, -12, 8, 8, -9, -9, 9, 9,	-10, -10, 6, 6, 6, 6, -7, -7, -7, -7, 7, 7, 7, 7, -8, -8, -8, -8,	4, 4, 4, 4,	4, 4, 4, 4, -5, -5, -5, -5, -5, -5, -5, -5, 5, 5, 5, 5, 5, 5, 5, 5,	-6, -6,	-6, -6, -6, -6, -6, -6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,	2, 2, -3,	-3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, 3, 3,	3, 3, 3, 3,	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, -4, -4, -4, -4, -4, -4, -4, -4, -4,	-4, -4, -4,	-4, -4, -4, -4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1, -1,	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	-1, -1,	-1, -1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,	1, 1, 1,	1, 1, 1, 1, 1, 1, 1, 1, 1, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,	-2, -2, -2,	-2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,	-2, -2    };    // a_curve[19 + i] = ... [-19..19] => [-160..160]    const static int a_curve[] =	{ -160, -144, -128, -112, -98, -88, -80, -72, -64, -56, -48,	-40, -32, -24, -18, -12, -8, -5, -2, 0, 2, 5, 8, 12, 18, 24, 32,	40, 48, 56, 64,	72, 80, 88, 98, 112, 128, 144, 160    };    // clamp0_255[256 + i] = min(max(i,255),0)    const static unsigned char clamp0_255[] =	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0,	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2,	3, 4, 5, 6, 7, 8, 9, 10,	11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,	28, 29, 30, 31, 32, 33,	34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,	51, 52, 53, 54, 55, 56,	57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,	74, 75, 76, 77, 78, 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, 128, 129, 130, 131, 132,	133, 134, 135, 136, 137,	138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150,	151, 152, 153, 154, 155,	156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168,	169, 170, 171, 172, 173,	174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186,	187, 188, 189, 190, 191,	192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204,	205, 206, 207, 208, 209,	210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222,	223, 224, 225, 226, 227,	228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240,	241, 242, 243, 244, 245,	246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 255, 255, 255,	255, 255, 255, 255, 255,	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,	255, 255, 255, 255, 255,	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,	255, 255, 255, 255, 255,	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,	255, 255, 255, 255, 255,	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,	255, 255, 255, 255, 255,

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