53 static void build_subblock_pattern(struct pwc_dec23_private *pdec)  in build_subblock_pattern()  argument
74 			pdec->table_subblock[i][j] = temp_values[j];  in build_subblock_pattern()
80 static void build_bit_powermask_table(struct pwc_dec23_private *pdec)  in build_bit_powermask_table()  argument
88 		p = pdec->table_bitpowermask[bit];  in build_bit_powermask_table()
154 static void fill_table_dc00_d800(struct pwc_dec23_private *pdec)  in fill_table_dc00_d800()  argument
163 		pdec->table_dc00[i] = offset1 & ~(ONE_HALF);  in fill_table_dc00_d800()
164 		pdec->table_d800[i] = offset2;  in fill_table_dc00_d800()
300 	struct pwc_dec23_private *pdec = &pdev->dec23;  in pwc_dec23_init()  local
302 	mutex_init(&pdec->lock);  in pwc_dec23_init()
304 	if (pdec->last_cmd_valid && pdec->last_cmd == cmd[2])  in pwc_dec23_init()
310 			pdec->nbits = 7;	/* More bits, mean more bits to encode the stream, but better quality */  in pwc_dec23_init()
312 			pdec->nbits = 8;  in pwc_dec23_init()
314 			pdec->nbits = 6;  in pwc_dec23_init()
317 		build_table_color(KiaraRomTable[version][0], pdec->table_0004_pass1, pdec->table_8004_pass1);  in pwc_dec23_init()
318 		build_table_color(KiaraRomTable[version][1], pdec->table_0004_pass2, pdec->table_8004_pass2);  in pwc_dec23_init()
324 			pdec->nbits = 7;  in pwc_dec23_init()
326 			pdec->nbits = 8;  in pwc_dec23_init()
328 			pdec->nbits = 6;  in pwc_dec23_init()
331 		build_table_color(TimonRomTable[version][0], pdec->table_0004_pass1, pdec->table_8004_pass1);  in pwc_dec23_init()
332 		build_table_color(TimonRomTable[version][1], pdec->table_0004_pass2, pdec->table_8004_pass2);  in pwc_dec23_init()
336 	shift = 8 - pdec->nbits;  in pwc_dec23_init()
337 	pdec->scalebits = SCALEBITS - shift;  in pwc_dec23_init()
338 	pdec->nbitsmask = 0xFF >> shift;  in pwc_dec23_init()
340 	fill_table_dc00_d800(pdec);  in pwc_dec23_init()
341 	build_subblock_pattern(pdec);  in pwc_dec23_init()
342 	build_bit_powermask_table(pdec);  in pwc_dec23_init()
354 	pdec->last_cmd = cmd[2];  in pwc_dec23_init()
355 	pdec->last_cmd_valid = 1;  in pwc_dec23_init()
469 #define fill_nbits(pdec, nbits_wanted) do { \  argument
470    while (pdec->nbits_in_reservoir<(nbits_wanted)) \
472       pdec->reservoir |= (*(pdec->stream)++) << (pdec->nbits_in_reservoir); \
473       pdec->nbits_in_reservoir += 8; \
477 #define skip_nbits(pdec, nbits_to_skip) do { \  argument
478    pdec->reservoir >>= (nbits_to_skip); \
479    pdec->nbits_in_reservoir -= (nbits_to_skip); \
482 #define get_nbits(pdec, nbits_wanted, result) do { \  argument
483    fill_nbits(pdec, nbits_wanted); \
484    result = (pdec->reservoir) & ((1U<<(nbits_wanted))-1); \
485    skip_nbits(pdec, nbits_wanted); \
488 #define __get_nbits(pdec, nbits_wanted, result) do { \  argument
489    result = (pdec->reservoir) & ((1U<<(nbits_wanted))-1); \
490    skip_nbits(pdec, nbits_wanted); \
493 #define look_nbits(pdec, nbits_wanted) \  argument
494    ((pdec->reservoir) & ((1U<<(nbits_wanted))-1))
499 static void decode_block(struct pwc_dec23_private *pdec,  in decode_block()  argument
507 	fill_nbits(pdec, 16);  in decode_block()
508 	__get_nbits(pdec, pdec->nbits, primary_color);  in decode_block()
510 	if (look_nbits(pdec,2) == 0) {  in decode_block()
511 		skip_nbits(pdec, 2);  in decode_block()
514 			pdec->temp_colors[i] = pdec->table_dc00[primary_color];  in decode_block()
521 		pdec->temp_colors[i] = pdec->table_d800[primary_color];  in decode_block()
523 	__get_nbits(pdec, 3, channel_v);  in decode_block()
541 		fill_nbits(pdec, 16);  in decode_block()
542 		htable_idx = look_nbits(pdec, 6);  in decode_block()
546 			skip_nbits(pdec, 2);  in decode_block()
557 			skip_nbits(pdec, 3);  in decode_block()
559 			__get_nbits(pdec, 4, yyyy);  in decode_block()
565 			__get_nbits(pdec, nbits+1, col1);  in decode_block()
568 			mask = pdec->table_bitpowermask[nbits][col1];  in decode_block()
572 			block = pdec->table_subblock[rows];  in decode_block()
574 				pdec->temp_colors[i] += block[MulIdx[offset1][i]];  in decode_block()
586 			block = pdec->table_subblock[rows];  in decode_block()
588 				pdec->temp_colors[i] += block[MulIdx[offset1][i]];  in decode_block()
591 			skip_nbits(pdec, shift);  in decode_block()
598 static void DecompressBand23(struct pwc_dec23_private *pdec,  in DecompressBand23()  argument
610 	pdec->reservoir = 0;  in DecompressBand23()
611 	pdec->nbits_in_reservoir = 0;  in DecompressBand23()
612 	pdec->stream = rawyuv + 1;	/* The first byte of the stream is skipped */  in DecompressBand23()
614 	get_nbits(pdec, 4, compression_index);  in DecompressBand23()
619 	ptable0004 = pdec->table_0004_pass1[compression_index];  in DecompressBand23()
620 	ptable8004 = pdec->table_8004_pass1[compression_index];  in DecompressBand23()
624 		decode_block(pdec, ptable0004, ptable8004);  in DecompressBand23()
625 		copy_image_block_Y(pdec->temp_colors, planar_y, real_image_width, pdec->scalebits);  in DecompressBand23()
633 	ptable0004 = pdec->table_0004_pass2[compression_index];  in DecompressBand23()
634 	ptable8004 = pdec->table_8004_pass2[compression_index];  in DecompressBand23()
638 		decode_block(pdec, ptable0004, ptable8004);  in DecompressBand23()
639 		copy_image_block_CrCb(pdec->temp_colors, planar_u, real_image_width/2, pdec->scalebits);  in DecompressBand23()
641 		decode_block(pdec, ptable0004, ptable8004);  in DecompressBand23()
642 		copy_image_block_CrCb(pdec->temp_colors, planar_v, real_image_width/2, pdec->scalebits);  in DecompressBand23()
663 	struct pwc_dec23_private *pdec = &pdev->dec23;  in pwc_dec23_decompress()  local
671 	mutex_lock(&pdec->lock);  in pwc_dec23_decompress()
682 		DecompressBand23(pdec, src,  in pwc_dec23_decompress()
690 	mutex_unlock(&pdec->lock);  in pwc_dec23_decompress()