2    Decompression for chipset version 2 et 3
3    (C) 2004-2006  Luc Saillard (luc@saillard.org)
13    the Free Software Foundation; either version 2 of the License, or
36  *   0: use a C version of this tests:  {  a<0?0:(a>255?255:a) }
139 				p0[k + 0x10] = (2 * pw) + 0x80;  in build_table_color()
143 				p0[k + 0x50] = (-2 * pw) + 0x80;  in build_table_color()
173  *   if look_bits(2) == 0:	# op == 2 in the lookup table
174  *      skip_bits(2)
193  *   op == 2 when (i%4)==0
270 	{0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3,},
271 	{0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,},
275 	{1, 3, 0, 2, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3, 0, 2,},
276 	{0, 3, 3, 0, 1, 2, 2, 1, 2, 1, 1, 2, 3, 0, 0, 3,},
277 	{0, 1, 2, 3, 3, 2, 1, 0, 3, 2, 1, 0, 0, 1, 2, 3,},
278 	{1, 1, 1, 1, 3, 3, 3, 3, 0, 0, 0, 0, 2, 2, 2, 2,},
282 	{1, 3, 0, 2, 2, 0, 3, 1, 2, 0, 3, 1, 1, 3, 0, 2,},
283 	{1, 2, 2, 1, 3, 0, 0, 3, 0, 3, 3, 0, 2, 1, 1, 2,},
289 static unsigned char pwc_crop_table[256 + 2*MAX_OUTER_CROP_VALUE];
304 	if (pdec->last_cmd_valid && pdec->last_cmd == cmd[2])  in pwc_dec23_init()
308 		flags = cmd[2] & 0x18;  in pwc_dec23_init()
316 		version = cmd[2] >> 5;  in pwc_dec23_init()
322 		flags = cmd[2] & 6;  in pwc_dec23_init()
323 		if (flags == 2)  in pwc_dec23_init()
330 		version = cmd[2] >> 3;  in pwc_dec23_init()
354 	pdec->last_cmd = cmd[2];  in pwc_dec23_init()
365 	const int *c = src;  in copy_image_block_Y()  local
368 	*d++ = cm[c[0] >> scalebits];  in copy_image_block_Y()
369 	*d++ = cm[c[1] >> scalebits];  in copy_image_block_Y()
370 	*d++ = cm[c[2] >> scalebits];  in copy_image_block_Y()
371 	*d++ = cm[c[3] >> scalebits];  in copy_image_block_Y()
374 	*d++ = cm[c[4] >> scalebits];  in copy_image_block_Y()
375 	*d++ = cm[c[5] >> scalebits];  in copy_image_block_Y()
376 	*d++ = cm[c[6] >> scalebits];  in copy_image_block_Y()
377 	*d++ = cm[c[7] >> scalebits];  in copy_image_block_Y()
379 	d = dst + bytes_per_line*2;  in copy_image_block_Y()
380 	*d++ = cm[c[8] >> scalebits];  in copy_image_block_Y()
381 	*d++ = cm[c[9] >> scalebits];  in copy_image_block_Y()
382 	*d++ = cm[c[10] >> scalebits];  in copy_image_block_Y()
383 	*d++ = cm[c[11] >> scalebits];  in copy_image_block_Y()
386 	*d++ = cm[c[12] >> scalebits];  in copy_image_block_Y()
387 	*d++ = cm[c[13] >> scalebits];  in copy_image_block_Y()
388 	*d++ = cm[c[14] >> scalebits];  in copy_image_block_Y()
389 	*d++ = cm[c[15] >> scalebits];  in copy_image_block_Y()
392 	const int *c = src;  in copy_image_block_Y()
394 	for (i = 0; i < 4; i++, c++)  in copy_image_block_Y()
395 		*d++ = CLAMP((*c) >> scalebits);  in copy_image_block_Y()
398 	for (i = 0; i < 4; i++, c++)  in copy_image_block_Y()
399 		*d++ = CLAMP((*c) >> scalebits);  in copy_image_block_Y()
401 	d = dst + bytes_per_line*2;  in copy_image_block_Y()
402 	for (i = 0; i < 4; i++, c++)  in copy_image_block_Y()
403 		*d++ = CLAMP((*c) >> scalebits);  in copy_image_block_Y()
406 	for (i = 0; i < 4; i++, c++)  in copy_image_block_Y()
407 		*d++ = CLAMP((*c) >> scalebits);  in copy_image_block_Y()
420 	const int *c = src;  in copy_image_block_CrCb()  local
423 	*d++ = cm[c[0] >> scalebits];  in copy_image_block_CrCb()
424 	*d++ = cm[c[4] >> scalebits];  in copy_image_block_CrCb()
425 	*d++ = cm[c[1] >> scalebits];  in copy_image_block_CrCb()
426 	*d++ = cm[c[5] >> scalebits];  in copy_image_block_CrCb()
427 	*d++ = cm[c[2] >> scalebits];  in copy_image_block_CrCb()
428 	*d++ = cm[c[6] >> scalebits];  in copy_image_block_CrCb()
429 	*d++ = cm[c[3] >> scalebits];  in copy_image_block_CrCb()
430 	*d++ = cm[c[7] >> scalebits];  in copy_image_block_CrCb()
433 	*d++ = cm[c[12] >> scalebits];  in copy_image_block_CrCb()
434 	*d++ = cm[c[8] >> scalebits];  in copy_image_block_CrCb()
435 	*d++ = cm[c[13] >> scalebits];  in copy_image_block_CrCb()
436 	*d++ = cm[c[9] >> scalebits];  in copy_image_block_CrCb()
437 	*d++ = cm[c[14] >> scalebits];  in copy_image_block_CrCb()
438 	*d++ = cm[c[10] >> scalebits];  in copy_image_block_CrCb()
439 	*d++ = cm[c[15] >> scalebits];  in copy_image_block_CrCb()
440 	*d++ = cm[c[11] >> scalebits];  in copy_image_block_CrCb()
510 	if (look_nbits(pdec,2) == 0) {  in decode_block()
511 		skip_nbits(pdec, 2);  in decode_block()
524 	channel_v = ((channel_v & 1) << 2) | (channel_v & 2) | ((channel_v & 4) >> 2);  in decode_block()
545 		if (op == 2) {  in decode_block()
546 			skip_nbits(pdec, 2);  in decode_block()
562 			nbits = ptable8004[offset1 * 2];  in decode_block()
569 			shift = ptable8004[offset1 * 2 + 1];  in decode_block()
582 			offset1 += hash_table_ops [htable_idx * 4 + 2];  in decode_block()
594 	} while (op != 2);  in decode_block()
630 	/* pass 2: uncompress UV component */  in DecompressBand23()
639 		copy_image_block_CrCb(pdec->temp_colors, planar_u, real_image_width/2, pdec->scalebits);  in DecompressBand23()
642 		copy_image_block_CrCb(pdec->temp_colors, planar_v, real_image_width/2, pdec->scalebits);  in DecompressBand23()
646 		nblocks -= 2;  in DecompressBand23()