Fixed multiple bugs in VSX filter functions
Now up,sub and avg filter VSX functions pass tests
This commit is contained in:
Vadim Barkov
parent
58e9d5d59d
commit
d4bdca45b3
@ -39,24 +39,28 @@
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* ( this is taken from ../intel/filter_sse2_intrinsics.c )
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*/
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#define declare_common_vars(row_info,row,prev_row) \
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#define declare_common_vars(row_info,row,prev_row,offset) \
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png_size_t i;\
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png_bytep rp = row;\
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png_bytep rp = row + offset;\
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png_const_bytep pp = prev_row;\
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png_size_t unaligned_top = 16 - (((png_size_t)row % 16));\
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png_size_t unaligned_top = 16 - (((png_size_t)rp % 16));\
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png_size_t istop;\
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if(unaligned_top == 16)\
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unaligned_top = 0;\
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istop = row_info->rowbytes - unaligned_top;
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istop = row_info->rowbytes;\
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if((unaligned_top < istop))\
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istop -= unaligned_top;\
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else{\
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unaligned_top = istop;\
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istop = 0;\
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}
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void png_read_filter_row_up_vsx(png_row_infop row_info, png_bytep row,
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png_const_bytep prev_row)
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{
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vector unsigned char rp_vec;
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vector unsigned char pp_vec;
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declare_common_vars(row_info,row,prev_row)
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declare_common_vars(row_info,row,prev_row,0)
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/* Altivec operations require 16-byte aligned data
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* but input can be unaligned. So we calculate
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@ -83,7 +87,7 @@ void png_read_filter_row_up_vsx(png_row_infop row_info, png_bytep row,
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istop -= 16;
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}
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if(istop % 16 > 0)
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if(istop > 0)
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{
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/* If byte count of row is not divisible by 16
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* we will process remaining part as usual
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@ -116,14 +120,12 @@ void png_read_filter_row_up_vsx(png_row_infop row_info, png_bytep row,
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#define VEC_AVG_SELECT3_3 (vector unsigned char){16,16,16,16,16,16,16,16,16, 9,10,11,16,16,16,16}
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#define VEC_AVG_SELECT4_3 (vector unsigned char){16,16,16,16,16,16,16,16,16,16,16,16,12,13,14,16}
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#ifdef PNG_USE_ABS
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# define vsx_abs(number) abs(number)
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#else
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# define vsx_abs(number) (number > 0) ? (number) : -(number)
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#endif
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void png_read_filter_row_sub4_vsx(png_row_infop row_info, png_bytep row,
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png_const_bytep prev_row)
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{
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@ -133,8 +135,7 @@ void png_read_filter_row_sub4_vsx(png_row_infop row_info, png_bytep row,
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vector unsigned char part_vec;
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vector unsigned char zero_vec = {0};
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declare_common_vars(row_info,row,prev_row)
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rp += bpp;
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declare_common_vars(row_info,row,prev_row,bpp)
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PNG_UNUSED(pp)
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@ -142,8 +143,7 @@ void png_read_filter_row_sub4_vsx(png_row_infop row_info, png_bytep row,
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* but input can be unaligned. So we calculate
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* unaligned part as usual.
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*/
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for (i = bpp; i < unaligned_top; i++)
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for (i = 0; i < unaligned_top; i++)
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{
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*rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff);
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rp++;
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@ -171,14 +171,16 @@ void png_read_filter_row_sub4_vsx(png_row_infop row_info, png_bytep row,
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istop -= 16;
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}
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if(istop % 16 > 0)
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if(istop > 0)
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for (i = 0; i < istop % 16; i++)
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{
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*rp = (png_byte)(((int)(*rp) + (int)(*(rp - bpp))) & 0xff);
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rp++;
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}
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}
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void png_read_filter_row_sub3_vsx(png_row_infop row_info, png_bytep row,
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png_const_bytep prev_row)
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{
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@ -188,16 +190,15 @@ void png_read_filter_row_sub3_vsx(png_row_infop row_info, png_bytep row,
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vector unsigned char part_vec;
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vector unsigned char zero_vec = {0};
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declare_common_vars(row_info,row,prev_row)
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rp += bpp;
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declare_common_vars(row_info,row,prev_row,bpp)
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PNG_UNUSED(pp)
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/* Altivec operations require 16-byte aligned data
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* but input can be unaligned. So we calculate
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* unaligned part as usual.
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*/
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for (i = bpp; i < unaligned_top; i++)
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for (i = 0; i < unaligned_top; i++)
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{
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*rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff);
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rp++;
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@ -232,7 +233,7 @@ void png_read_filter_row_sub3_vsx(png_row_infop row_info, png_bytep row,
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*(rp - 1) += *(rp - 1 - 3);
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}
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if(istop % 16 > 0)
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if(istop > 0)
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for (i = 0; i < istop % 16; i++)
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{
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*rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff);
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@ -252,7 +253,10 @@ void png_read_filter_row_avg4_vsx(png_row_infop row_info, png_bytep row,
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vector unsigned char avg_vec;
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vector unsigned char zero_vec = {0};
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declare_common_vars(row_info,row,prev_row)
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declare_common_vars(row_info,row,prev_row,bpp)
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rp -= bpp;
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if(istop >= bpp)
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istop -= bpp;
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for (i = 0; i < bpp; i++)
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{
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@ -266,7 +270,7 @@ void png_read_filter_row_avg4_vsx(png_row_infop row_info, png_bytep row,
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* but input can be unaligned. So we calculate
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* unaligned part as usual.
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*/
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for (i = bpp; i < unaligned_top; i++)
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for (i = 0; i < unaligned_top; i++)
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{
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*rp = (png_byte)(((int)(*rp) +
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(int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff);
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@ -315,7 +319,7 @@ void png_read_filter_row_avg4_vsx(png_row_infop row_info, png_bytep row,
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istop -= 16;
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}
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if(istop % 16 > 0)
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if(istop > 0)
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for (i = 0; i < istop % 16; i++)
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{
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*rp = (png_byte)(((int)(*rp) +
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@ -337,7 +341,10 @@ void png_read_filter_row_avg3_vsx(png_row_infop row_info, png_bytep row,
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vector unsigned char avg_vec;
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vector unsigned char zero_vec = {0};
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declare_common_vars(row_info,row,prev_row)
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declare_common_vars(row_info,row,prev_row,bpp)
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rp -= bpp;
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if(istop >= bpp)
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istop -= bpp;
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for (i = 0; i < bpp; i++)
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{
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@ -351,7 +358,7 @@ void png_read_filter_row_avg3_vsx(png_row_infop row_info, png_bytep row,
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* but input can be unaligned. So we calculate
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* unaligned part as usual.
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*/
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for (i = bpp; i < unaligned_top; i++)
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for (i = 0; i < unaligned_top; i++)
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{
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*rp = (png_byte)(((int)(*rp) +
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(int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff);
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@ -393,19 +400,27 @@ void png_read_filter_row_avg3_vsx(png_row_infop row_info, png_bytep row,
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avg_vec = vec_sub(avg_vec, vec_and(vec_xor(rp_part_vec,pp_part_vec),vec_splat_u8(1)));
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rp_vec = vec_add(rp_vec,avg_vec);
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rp_part_vec = vec_perm(rp_vec,zero_vec,VEC_SELECT4_3);
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pp_part_vec = vec_perm(pp_vec,zero_vec,VEC_AVG_SELECT4_3);
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avg_vec = vec_avg(rp_part_vec,pp_part_vec);
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avg_vec = vec_sub(avg_vec, vec_and(vec_xor(rp_part_vec,pp_part_vec),vec_splat_u8(1)));
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rp_vec = vec_add(rp_vec,avg_vec);
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vec_st(rp_vec,0,rp);
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rp += 16;
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pp += 16;
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rp += 15;
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pp += 15;
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istop -= 16;
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/* Since 16 % bpp = 16 % 3 = 1, last element of array must
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* be proceeded manually
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*/
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*(rp - 1) += ((int)(*(pp-1) + *(rp-1-bpp)) / 2 ) & 0xff;
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*rp = (png_byte)(((int)(*rp) +
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(int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff);
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rp++;
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}
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if(istop % 16 > 0)
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if(istop > 0)
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for (i = 0; i < istop % 16; i++)
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{
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*rp = (png_byte)(((int)(*rp) +
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@ -413,7 +428,6 @@ void png_read_filter_row_avg3_vsx(png_row_infop row_info, png_bytep row,
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rp++;
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}
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}
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/* Bytewise c ? t : e. */
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@ -443,10 +457,14 @@ void png_read_filter_row_paeth4_vsx(png_row_infop row_info, png_bytep row,
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vector unsigned char rp_vec;
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vector unsigned char pp_vec;
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vector unsigned char a_vec,b_vec,c_vec,nearest_vec;
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vector signed char pa_vec,pb_vec,pc_vec,smallest_vec;
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vector signed char pa_vec,pb_vec,pc_vec;
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vector unsigned char pa_vec_abs,pb_vec_abs,pc_vec_abs,smallest_vec;
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vector unsigned char zero_vec = {0};
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declare_common_vars(row_info,row,prev_row)
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declare_common_vars(row_info,row,prev_row,bpp)
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rp -= bpp;
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if(istop >= bpp)
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istop -= bpp;
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/* Process the first pixel in the row completely (this is the same as 'up'
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* because there is only one candidate predictor for the first row).
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@ -458,12 +476,12 @@ void png_read_filter_row_paeth4_vsx(png_row_infop row_info, png_bytep row,
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pp++;
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}
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for(i = bpp; i < unaligned_top ; i++)
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for(i = 0; i < unaligned_top ; i++)
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{
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vsx_paeth_process(rp,pp,a,b,c,pa,pb,pc,bpp)
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}
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while( istop > 16)
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while( istop >= 16)
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{
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for(i = 0; i < bpp ; i++)
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{
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@ -481,14 +499,14 @@ void png_read_filter_row_paeth4_vsx(png_row_infop row_info, png_bytep row,
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pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
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pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
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pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
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pa_vec = vec_abs(pa_vec);
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pb_vec = vec_abs(pb_vec);
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pc_vec = vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
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pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
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pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
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pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
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nearest_vec = if_then_else(
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vec_cmpeq(pa_vec,smallest_vec),
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vec_cmpeq(pa_vec_abs,smallest_vec),
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a_vec,
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if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
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if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
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);
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rp_vec = vec_add(rp_vec, nearest_vec);
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@ -498,16 +516,15 @@ void png_read_filter_row_paeth4_vsx(png_row_infop row_info, png_bytep row,
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pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
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pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
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pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
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pa_vec = vec_abs(pa_vec);
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pb_vec = vec_abs(pb_vec);
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pc_vec = vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
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pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
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pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
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pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
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nearest_vec = if_then_else(
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vec_cmpeq(pa_vec,smallest_vec),
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vec_cmpeq(pa_vec_abs,smallest_vec),
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a_vec,
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if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
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if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
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);
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rp_vec = vec_add(rp_vec, nearest_vec);
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a_vec = vec_perm(rp_vec , zero_vec , VEC_SELECT3_4);
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@ -516,16 +533,15 @@ void png_read_filter_row_paeth4_vsx(png_row_infop row_info, png_bytep row,
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pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
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pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
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pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
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pa_vec = vec_abs(pa_vec);
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pb_vec = vec_abs(pb_vec);
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pc_vec = vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
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pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
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pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
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pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
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nearest_vec = if_then_else(
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vec_cmpeq(pa_vec,smallest_vec),
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vec_cmpeq(pa_vec_abs,smallest_vec),
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a_vec,
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if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
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if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
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);
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rp_vec = vec_add(rp_vec, nearest_vec);
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vec_st(rp_vec,0,rp);
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@ -551,10 +567,14 @@ void png_read_filter_row_paeth3_vsx(png_row_infop row_info, png_bytep row,
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vector unsigned char rp_vec;
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vector unsigned char pp_vec;
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vector unsigned char a_vec,b_vec,c_vec,nearest_vec;
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vector signed char pa_vec,pb_vec,pc_vec,smallest_vec;
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vector signed char pa_vec,pb_vec,pc_vec;
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vector unsigned char pa_vec_abs,pb_vec_abs,pc_vec_abs,smallest_vec;
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vector unsigned char zero_vec = {0};
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declare_common_vars(row_info,row,prev_row)
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declare_common_vars(row_info,row,prev_row,bpp)
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rp -= bpp;
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if(istop >= bpp)
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istop -= bpp;
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/* Process the first pixel in the row completely (this is the same as 'up'
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* because there is only one candidate predictor for the first row).
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@ -566,12 +586,12 @@ void png_read_filter_row_paeth3_vsx(png_row_infop row_info, png_bytep row,
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pp++;
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}
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for(i = bpp; i < unaligned_top ; i++)
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for(i = 0; i < unaligned_top ; i++)
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{
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vsx_paeth_process(rp,pp,a,b,c,pa,pb,pc,bpp)
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}
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while( istop > 16)
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while( istop >= 16)
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{
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for(i = 0; i < bpp ; i++)
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{
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@ -589,14 +609,14 @@ void png_read_filter_row_paeth3_vsx(png_row_infop row_info, png_bytep row,
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pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
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pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
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pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
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pa_vec = vec_abs(pa_vec);
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pb_vec = vec_abs(pb_vec);
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pc_vec = vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
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pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
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pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
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pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
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smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
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nearest_vec = if_then_else(
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vec_cmpeq(pa_vec,smallest_vec),
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vec_cmpeq(pa_vec_abs,smallest_vec),
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a_vec,
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if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
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if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
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);
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rp_vec = vec_add(rp_vec, nearest_vec);
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@ -606,16 +626,15 @@ void png_read_filter_row_paeth3_vsx(png_row_infop row_info, png_bytep row,
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pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
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pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
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pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
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pa_vec = vec_abs(pa_vec);
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pb_vec = vec_abs(pb_vec);
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pc_vec = vec_abs(pc_vec);
|
||||
smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
|
||||
pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
|
||||
pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
|
||||
pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
|
||||
smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
|
||||
nearest_vec = if_then_else(
|
||||
vec_cmpeq(pa_vec,smallest_vec),
|
||||
vec_cmpeq(pa_vec_abs,smallest_vec),
|
||||
a_vec,
|
||||
if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
|
||||
if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
|
||||
);
|
||||
|
||||
rp_vec = vec_add(rp_vec, nearest_vec);
|
||||
|
||||
a_vec = vec_perm(rp_vec , zero_vec , VEC_SELECT3_3);
|
||||
@ -624,16 +643,15 @@ void png_read_filter_row_paeth3_vsx(png_row_infop row_info, png_bytep row,
|
||||
pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
|
||||
pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
|
||||
pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
|
||||
pa_vec = vec_abs(pa_vec);
|
||||
pb_vec = vec_abs(pb_vec);
|
||||
pc_vec = vec_abs(pc_vec);
|
||||
smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
|
||||
pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
|
||||
pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
|
||||
pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
|
||||
smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
|
||||
nearest_vec = if_then_else(
|
||||
vec_cmpeq(pa_vec,smallest_vec),
|
||||
vec_cmpeq(pa_vec_abs,smallest_vec),
|
||||
a_vec,
|
||||
if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
|
||||
if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
|
||||
);
|
||||
|
||||
rp_vec = vec_add(rp_vec, nearest_vec);
|
||||
|
||||
a_vec = vec_perm(rp_vec , zero_vec , VEC_SELECT4_3);
|
||||
@ -642,24 +660,23 @@ void png_read_filter_row_paeth3_vsx(png_row_infop row_info, png_bytep row,
|
||||
pa_vec = (vector signed char) vec_sub(b_vec,c_vec);
|
||||
pb_vec = (vector signed char) vec_sub(a_vec , c_vec);
|
||||
pc_vec = (vector signed char) vec_add(pa_vec,pb_vec);
|
||||
pa_vec = vec_abs(pa_vec);
|
||||
pb_vec = vec_abs(pb_vec);
|
||||
pc_vec = vec_abs(pc_vec);
|
||||
smallest_vec = vec_min(pc_vec, vec_min(pa_vec,pb_vec));
|
||||
pa_vec_abs = (vector unsigned char)vec_abs(pa_vec);
|
||||
pb_vec_abs = (vector unsigned char)vec_abs(pb_vec);
|
||||
pc_vec_abs = (vector unsigned char)vec_abs(pc_vec);
|
||||
smallest_vec = vec_min(pc_vec_abs, vec_min(pa_vec_abs,pb_vec_abs));
|
||||
nearest_vec = if_then_else(
|
||||
vec_cmpeq(pa_vec,smallest_vec),
|
||||
vec_cmpeq(pa_vec_abs,smallest_vec),
|
||||
a_vec,
|
||||
if_then_else(vec_cmpeq(pb_vec,smallest_vec),b_vec,c_vec)
|
||||
if_then_else(vec_cmpeq(pb_vec_abs,smallest_vec),b_vec,c_vec)
|
||||
);
|
||||
|
||||
rp_vec = vec_add(rp_vec, nearest_vec);
|
||||
|
||||
|
||||
vec_st(rp_vec,0,rp);
|
||||
|
||||
rp += 16-1;
|
||||
pp += 16-1;
|
||||
rp += 15;
|
||||
pp += 15;
|
||||
istop -= 16;
|
||||
|
||||
/* Since 16 % bpp = 16 % 3 = 1, last element of array must
|
||||
* be proceeded manually
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user