| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <algorithm> |
| #include "skia/ext/convolver.h" |
| #include "skia/ext/convolver_mips_dspr2.h" |
| #include "third_party/skia/include/core/SkTypes.h" |
| |
| namespace skia { |
| // Convolves horizontally along a single row. The row data is given in |
| // |src_data| and continues for the num_values() of the filter. |
| void ConvolveHorizontally_mips_dspr2(const unsigned char* src_data, |
| const ConvolutionFilter1D& filter, |
| unsigned char* out_row, |
| bool has_alpha) { |
| #if SIMD_MIPS_DSPR2 |
| int row_to_filter = 0; |
| int num_values = filter.num_values(); |
| if (has_alpha) { |
| for (int out_x = 0; out_x < num_values; out_x++) { |
| // Get the filter that determines the current output pixel. |
| int filter_offset, filter_length; |
| const ConvolutionFilter1D::Fixed* filter_values = |
| filter.FilterForValue(out_x, &filter_offset, &filter_length); |
| int filter_x = 0; |
| |
| __asm__ __volatile__ ( |
| ".set push \n" |
| ".set noreorder \n" |
| |
| "beqz %[filter_len], 3f \n" |
| " sll $t0, %[filter_offset], 2 \n" |
| "addu %[rtf], %[src_data], $t0 \n" |
| "mtlo $0, $ac0 \n" |
| "mtlo $0, $ac1 \n" |
| "mtlo $0, $ac2 \n" |
| "mtlo $0, $ac3 \n" |
| "srl $t7, %[filter_len], 2 \n" |
| "beqz $t7, 2f \n" |
| " li %[fx], 0 \n" |
| |
| "11: \n" |
| "addu $t4, %[filter_val], %[fx] \n" |
| "sll $t5, %[fx], 1 \n" |
| "ulw $t6, 0($t4) \n" // t6 = |cur[1]|cur[0]| |
| "ulw $t8, 4($t4) \n" // t8 = |cur[3]|cur[2]| |
| "addu $t0, %[rtf], $t5 \n" |
| "lw $t1, 0($t0) \n" // t1 = |a0|b0|g0|r0| |
| "lw $t2, 4($t0) \n" // t2 = |a1|b1|g1|r1| |
| "lw $t3, 8($t0) \n" // t3 = |a2|b2|g2|r2| |
| "lw $t4, 12($t0) \n" // t4 = |a3|b3|g3|r3| |
| "precrq.qb.ph $t0, $t2, $t1 \n" // t0 = |a1|g1|a0|g0| |
| "precr.qb.ph $t5, $t2, $t1 \n" // t5 = |b1|r1|b0|r0| |
| "preceu.ph.qbla $t1, $t0 \n" // t1 = |0|a1|0|a0| |
| "preceu.ph.qbra $t2, $t0 \n" // t2 = |0|g1|0|g0| |
| "preceu.ph.qbla $t0, $t5 \n" // t0 = |0|b1|0|b0| |
| "preceu.ph.qbra $t5, $t5 \n" // t5 = |0|r1|0|r0| |
| "dpa.w.ph $ac0, $t1, $t6 \n" // ac0+(cur*a1)+(cur*a0) |
| "dpa.w.ph $ac1, $t0, $t6 \n" // ac1+(cur*b1)+(cur*b0) |
| "dpa.w.ph $ac2, $t2, $t6 \n" // ac2+(cur*g1)+(cur*g0) |
| "dpa.w.ph $ac3, $t5, $t6 \n" // ac3+(cur*r1)+(cur*r0) |
| "precrq.qb.ph $t0, $t4, $t3 \n" // t0 = |a3|g3|a2|g2| |
| "precr.qb.ph $t5, $t4, $t3 \n" // t5 = |b3|r3|b2|r2| |
| "preceu.ph.qbla $t1, $t0 \n" // t1 = |0|a3|0|a2| |
| "preceu.ph.qbra $t2, $t0 \n" // t2 = |0|g3|0|g2| |
| "preceu.ph.qbla $t0, $t5 \n" // t0 = |0|b3|0|b2| |
| "preceu.ph.qbra $t5, $t5 \n" // t5 = |0|r3|0|r2| |
| "dpa.w.ph $ac0, $t1, $t8 \n" // ac0+(cur*a3)+(cur*a2) |
| "dpa.w.ph $ac1, $t0, $t8 \n" // ac1+(cur*b3)+(cur*b2) |
| "dpa.w.ph $ac2, $t2, $t8 \n" // ac2+(cur*g3)+(cur*g2) |
| "dpa.w.ph $ac3, $t5, $t8 \n" // ac3+(cur*r3)+(cur*r2) |
| "addiu $t7, $t7, -1 \n" |
| "bgtz $t7, 11b \n" |
| " addiu %[fx], %[fx], 8 \n" |
| |
| "2: \n" |
| "andi $t7, %[filter_len], 0x3 \n" // residual |
| "beqz $t7, 3f \n" |
| " nop \n" |
| |
| "21: \n" |
| "sll $t1, %[fx], 1 \n" |
| "addu $t2, %[filter_val], %[fx] \n" |
| "addu $t0, %[rtf], $t1 \n" |
| "lh $t6, 0($t2) \n" // t6 = filter_val[fx] |
| "lbu $t1, 0($t0) \n" // t1 = row[fx * 4 + 0] |
| "lbu $t2, 1($t0) \n" // t2 = row[fx * 4 + 1] |
| "lbu $t3, 2($t0) \n" // t3 = row[fx * 4 + 2] |
| "lbu $t4, 3($t0) \n" // t4 = row[fx * 4 + 2] |
| "maddu $ac3, $t6, $t1 \n" |
| "maddu $ac2, $t6, $t2 \n" |
| "maddu $ac1, $t6, $t3 \n" |
| "maddu $ac0, $t6, $t4 \n" |
| "addiu $t7, $t7, -1 \n" |
| "bgtz $t7, 21b \n" |
| " addiu %[fx], %[fx], 2 \n" |
| |
| "3: \n" |
| "extrv.w $t0, $ac0, %[kShiftBits] \n" // a >> kShiftBits |
| "extrv.w $t1, $ac1, %[kShiftBits] \n" // b >> kShiftBits |
| "extrv.w $t2, $ac2, %[kShiftBits] \n" // g >> kShiftBits |
| "extrv.w $t3, $ac3, %[kShiftBits] \n" // r >> kShiftBits |
| "sll $t5, %[out_x], 2 \n" |
| "repl.ph $t6, 128 \n" // t6 = | 128 | 128 | |
| "addu $t5, %[out_row], $t5 \n" |
| "append $t2, $t3, 16 \n" |
| "append $t0, $t1, 16 \n" |
| "subu.ph $t1, $t0, $t6 \n" |
| "shll_s.ph $t1, $t1, 8 \n" |
| "shra.ph $t1, $t1, 8 \n" |
| "addu.ph $t1, $t1, $t6 \n" |
| "subu.ph $t3, $t2, $t6 \n" |
| "shll_s.ph $t3, $t3, 8 \n" |
| "shra.ph $t3, $t3, 8 \n" |
| "addu.ph $t3, $t3, $t6 \n" |
| "precr.qb.ph $t0, $t1, $t3 \n" |
| "usw $t0, 0($t5) \n" |
| |
| ".set pop \n" |
| : [fx] "+r" (filter_x), [out_x] "+r" (out_x), [out_row] "+r" (out_row), |
| [rtf] "+r" (row_to_filter) |
| : [filter_val] "r" (filter_values), [filter_len] "r" (filter_length), |
| [kShiftBits] "r" (ConvolutionFilter1D::kShiftBits), |
| [filter_offset] "r" (filter_offset), [src_data] "r" (src_data) |
| : "lo", "hi", "$ac1lo", "$ac1hi", "$ac2lo", "$ac2hi", "$ac3lo", "$ac3hi", |
| "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8" |
| ); |
| } |
| } else { |
| for (int out_x = 0; out_x < num_values; out_x++) { |
| // Get the filter that determines the current output pixel. |
| int filter_offset, filter_length; |
| const ConvolutionFilter1D::Fixed* filter_values = |
| filter.FilterForValue(out_x, &filter_offset, &filter_length); |
| int filter_x = 0; |
| __asm__ __volatile__ ( |
| ".set push \n" |
| ".set noreorder \n" |
| |
| "beqz %[filter_len], 3f \n" |
| " sll $t0, %[filter_offset], 2 \n" |
| "addu %[rtf], %[src_data], $t0 \n" |
| "mtlo $0, $ac1 \n" |
| "mtlo $0, $ac2 \n" |
| "mtlo $0, $ac3 \n" |
| "srl $t7, %[filter_len], 2 \n" |
| "beqz $t7, 2f \n" |
| " li %[fx], 0 \n" |
| |
| "11: \n" |
| "addu $t4, %[filter_val], %[fx] \n" |
| "sll $t5, %[fx], 1 \n" |
| "ulw $t6, 0($t4) \n" // t6 = |cur[1]|cur[0]| |
| "ulw $t8, 4($t4) \n" // t8 = |cur[3]|cur[2]| |
| "addu $t0, %[rtf], $t5 \n" |
| "lw $t1, 0($t0) \n" // t1 = |a0|b0|g0|r0| |
| "lw $t2, 4($t0) \n" // t2 = |a1|b1|g1|r1| |
| "lw $t3, 8($t0) \n" // t3 = |a2|b2|g2|r2| |
| "lw $t4, 12($t0) \n" // t4 = |a3|b3|g3|r3| |
| "precrq.qb.ph $t0, $t2, $t1 \n" // t0 = |a1|g1|a0|g0| |
| "precr.qb.ph $t5, $t2, $t1 \n" // t5 = |b1|r1|b0|r0| |
| "preceu.ph.qbra $t2, $t0 \n" // t2 = |0|g1|0|g0| |
| "preceu.ph.qbla $t0, $t5 \n" // t0 = |0|b1|0|b0| |
| "preceu.ph.qbra $t5, $t5 \n" // t5 = |0|r1|0|r0| |
| "dpa.w.ph $ac1, $t0, $t6 \n" // ac1+(cur*b1)+(cur*b0) |
| "dpa.w.ph $ac2, $t2, $t6 \n" // ac2+(cur*g1)+(cur*g0) |
| "dpa.w.ph $ac3, $t5, $t6 \n" // ac3+(cur*r1)+(cur*r0) |
| "precrq.qb.ph $t0, $t4, $t3 \n" // t0 = |a3|g3|a2|g2| |
| "precr.qb.ph $t5, $t4, $t3 \n" // t5 = |b3|r3|b2|r2| |
| "preceu.ph.qbra $t2, $t0 \n" // t2 = |0|g3|0|g2| |
| "preceu.ph.qbla $t0, $t5 \n" // t0 = |0|b3|0|b2| |
| "preceu.ph.qbra $t5, $t5 \n" // t5 = |0|r3|0|r2| |
| "dpa.w.ph $ac1, $t0, $t8 \n" // ac1+(cur*b3)+(cur*b2) |
| "dpa.w.ph $ac2, $t2, $t8 \n" // ac2+(cur*g3)+(cur*g2) |
| "dpa.w.ph $ac3, $t5, $t8 \n" // ac3+(cur*r3)+(cur*r2) |
| "addiu $t7, $t7, -1 \n" |
| "bgtz $t7, 11b \n" |
| " addiu %[fx], %[fx], 8 \n" |
| |
| "2: \n" |
| "andi $t7, %[filter_len], 0x3 \n" // residual |
| "beqz $t7, 3f \n" |
| " nop \n" |
| |
| "21: \n" |
| "sll $t1, %[fx], 1 \n" |
| "addu $t2, %[filter_val], %[fx] \n" |
| "addu $t0, %[rtf], $t1 \n" |
| "lh $t6, 0($t2) \n" // t6 = filter_val[fx] |
| "lbu $t1, 0($t0) \n" // t1 = row[fx * 4 + 0] |
| "lbu $t2, 1($t0) \n" // t2 = row[fx * 4 + 1] |
| "lbu $t3, 2($t0) \n" // t3 = row[fx * 4 + 2] |
| "maddu $ac3, $t6, $t1 \n" |
| "maddu $ac2, $t6, $t2 \n" |
| "maddu $ac1, $t6, $t3 \n" |
| "addiu $t7, $t7, -1 \n" |
| "bgtz $t7, 21b \n" |
| " addiu %[fx], %[fx], 2 \n" |
| |
| "3: \n" |
| "extrv.w $t1, $ac1, %[kShiftBits] \n" // b >> kShiftBits |
| "extrv.w $t2, $ac2, %[kShiftBits] \n" // g >> kShiftBits |
| "extrv.w $t3, $ac3, %[kShiftBits] \n" // r >> kShiftBits |
| "repl.ph $t6, 128 \n" // t6 = | 128 | 128 | |
| "sll $t8, %[out_x], 2 \n" |
| "addu $t8, %[out_row], $t8 \n" |
| "append $t2, $t3, 16 \n" |
| "andi $t1, 0xFFFF \n" |
| "subu.ph $t5, $t1, $t6 \n" |
| "shll_s.ph $t5, $t5, 8 \n" |
| "shra.ph $t5, $t5, 8 \n" |
| "addu.ph $t5, $t5, $t6 \n" |
| "subu.ph $t4, $t2, $t6 \n" |
| "shll_s.ph $t4, $t4, 8 \n" |
| "shra.ph $t4, $t4, 8 \n" |
| "addu.ph $t4, $t4, $t6 \n" |
| "precr.qb.ph $t0, $t5, $t4 \n" |
| "usw $t0, 0($t8) \n" |
| |
| ".set pop \n" |
| : [fx] "+r" (filter_x), [out_x] "+r" (out_x), [out_row] "+r" (out_row), |
| [rtf] "+r" (row_to_filter) |
| : [filter_val] "r" (filter_values), [filter_len] "r" (filter_length), |
| [kShiftBits] "r" (ConvolutionFilter1D::kShiftBits), |
| [filter_offset] "r" (filter_offset), [src_data] "r" (src_data) |
| : "lo", "hi", "$ac1lo", "$ac1hi", "$ac2lo", "$ac2hi", "$ac3lo", "$ac3hi", |
| "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", "t8" |
| ); |
| } |
| } |
| #endif |
| } |
| void ConvolveVertically_mips_dspr2(const ConvolutionFilter1D::Fixed* filter_val, |
| int filter_length, |
| unsigned char* const* source_data_rows, |
| int pixel_width, |
| unsigned char* out_row, |
| bool has_alpha) { |
| #if SIMD_MIPS_DSPR2 |
| // We go through each column in the output and do a vertical convolution, |
| // generating one output pixel each time. |
| int byte_offset; |
| int cnt; |
| int filter_y; |
| if (has_alpha) { |
| for (int out_x = 0; out_x < pixel_width; out_x++) { |
| __asm__ __volatile__ ( |
| ".set push \n" |
| ".set noreorder \n" |
| |
| "beqz %[filter_len], 3f \n" |
| " sll %[offset], %[out_x], 2 \n" |
| "mtlo $0, $ac0 \n" |
| "mtlo $0, $ac1 \n" |
| "mtlo $0, $ac2 \n" |
| "mtlo $0, $ac3 \n" |
| "srl %[cnt], %[filter_len], 2 \n" |
| "beqz %[cnt], 2f \n" |
| " li %[fy], 0 \n" |
| |
| "11: \n" |
| "sll $t1, %[fy], 1 \n" |
| "addu $t0, %[src_data_rows], $t1 \n" |
| "lw $t1, 0($t0) \n" |
| "lw $t2, 4($t0) \n" |
| "lw $t3, 8($t0) \n" |
| "lw $t4, 12($t0) \n" |
| "addu $t1, $t1, %[offset] \n" |
| "addu $t2, $t2, %[offset] \n" |
| "addu $t3, $t3, %[offset] \n" |
| "addu $t4, $t4, %[offset] \n" |
| "lw $t1, 0($t1) \n" // t1 = |a0|b0|g0|r0| |
| "lw $t2, 0($t2) \n" // t2 = |a1|b1|g1|r1| |
| "lw $t3, 0($t3) \n" // t3 = |a0|b0|g0|r0| |
| "lw $t4, 0($t4) \n" // t4 = |a1|b1|g1|r1| |
| "precrq.qb.ph $t5, $t2, $t1 \n" // t5 = |a1|g1|a0|g0| |
| "precr.qb.ph $t6, $t2, $t1 \n" // t6 = |b1|r1|b0|r0| |
| "preceu.ph.qbla $t0, $t5 \n" // t0 = |0|a1|0|a0| |
| "preceu.ph.qbra $t1, $t5 \n" // t1 = |0|g1|0|g0| |
| "preceu.ph.qbla $t2, $t6 \n" // t2 = |0|b1|0|b0| |
| "preceu.ph.qbra $t5, $t6 \n" // t5 = |0|r1|0|r0| |
| "addu $t6, %[filter_val], %[fy] \n" |
| "ulw $t7, 0($t6) \n" // t7 = |cur_1|cur_0| |
| "ulw $t6, 4($t6) \n" // t6 = |cur_3|cur_2| |
| "dpa.w.ph $ac0, $t5, $t7 \n" // (cur*r1)+(cur*r0) |
| "dpa.w.ph $ac1, $t1, $t7 \n" // (cur*g1)+(cur*g0) |
| "dpa.w.ph $ac2, $t2, $t7 \n" // (cur*b1)+(cur*b0) |
| "dpa.w.ph $ac3, $t0, $t7 \n" // (cur*a1)+(cur*a0) |
| "precrq.qb.ph $t5, $t4, $t3 \n" // t5 = |a3|g3|a2|g2| |
| "precr.qb.ph $t7, $t4, $t3 \n" // t7 = |b3|r3|b2|r2| |
| "preceu.ph.qbla $t0, $t5 \n" // t0 = |0|a3|0|a2| |
| "preceu.ph.qbra $t1, $t5 \n" // t1 = |0|g3|0|g2| |
| "preceu.ph.qbla $t2, $t7 \n" // t2 = |0|b3|0|b2| |
| "preceu.ph.qbra $t5, $t7 \n" // t5 = |0|r3|0|r2| |
| "dpa.w.ph $ac0, $t5, $t6 \n" // (cur*r3)+(cur*r2) |
| "dpa.w.ph $ac1, $t1, $t6 \n" // (cur*g3)+(cur*g2) |
| "dpa.w.ph $ac2, $t2, $t6 \n" // (cur*b3)+(cur*b2) |
| "dpa.w.ph $ac3, $t0, $t6 \n" // (cur*a3)+(cur*a2) |
| "addiu %[cnt], %[cnt], -1 \n" |
| "bgtz %[cnt], 11b \n" |
| " addiu %[fy], %[fy], 8 \n" |
| |
| "2: \n" |
| "andi %[cnt], %[filter_len], 0x3 \n" // residual |
| "beqz %[cnt], 3f \n" |
| " nop \n" |
| |
| "21: \n" |
| "addu $t0, %[filter_val], %[fy] \n" |
| "lh $t4, 0($t0) \n" // t4=filter_val[fx] |
| "sll $t1, %[fy], 1 \n" |
| "addu $t0, %[src_data_rows], $t1 \n" |
| "lw $t1, 0($t0) \n" |
| "addu $t0, $t1, %[offset] \n" |
| "lbu $t1, 0($t0) \n" // t1 = row[fx*4 + 0] |
| "lbu $t2, 1($t0) \n" // t2 = row[fx*4 + 1] |
| "lbu $t3, 2($t0) \n" // t3 = row[fx*4 + 2] |
| "lbu $t0, 3($t0) \n" // t4 = row[fx*4 + 2] |
| "maddu $ac0, $t4, $t1 \n" |
| "maddu $ac1, $t4, $t2 \n" |
| "maddu $ac2, $t4, $t3 \n" |
| "maddu $ac3, $t4, $t0 \n" |
| "addiu %[cnt], %[cnt], -1 \n" |
| "bgtz %[cnt], 21b \n" |
| " addiu %[fy], %[fy], 2 \n" |
| |
| "3: \n" |
| "extrv.w $t3, $ac0, %[kShiftBits] \n" // a >> kShiftBits |
| "extrv.w $t2, $ac1, %[kShiftBits] \n" // b >> kShiftBits |
| "extrv.w $t1, $ac2, %[kShiftBits] \n" // g >> kShiftBits |
| "extrv.w $t0, $ac3, %[kShiftBits] \n" // r >> kShiftBits |
| "repl.ph $t4, 128 \n" // t4 = | 128 | 128 | |
| "addu $t5, %[out_row], %[offset] \n" |
| "append $t2, $t3, 16 \n" // t2 = |0|g|0|r| |
| "append $t0, $t1, 16 \n" // t0 = |0|a|0|b| |
| "subu.ph $t1, $t0, $t4 \n" |
| "shll_s.ph $t1, $t1, 8 \n" |
| "shra.ph $t1, $t1, 8 \n" |
| "addu.ph $t1, $t1, $t4 \n" // Clamp(a)|Clamp(b) |
| "subu.ph $t2, $t2, $t4 \n" |
| "shll_s.ph $t2, $t2, 8 \n" |
| "shra.ph $t2, $t2, 8 \n" |
| "addu.ph $t2, $t2, $t4 \n" // Clamp(g)|Clamp(r) |
| "andi $t3, $t1, 0xFF \n" // t3 = ClampTo8(b) |
| "cmp.lt.ph $t3, $t2 \n" // cmp b, g, r |
| "pick.ph $t0, $t2, $t3 \n" |
| "andi $t3, $t0, 0xFF \n" |
| "srl $t4, $t0, 16 \n" |
| "cmp.lt.ph $t3, $t4 \n" |
| "pick.ph $t0, $t4, $t3 \n" // t0 = max_color_ch |
| "srl $t3, $t1, 16 \n" // t1 = ClampTo8(a) |
| "cmp.lt.ph $t3, $t0 \n" |
| "pick.ph $t0, $t0, $t3 \n" |
| "ins $t1, $t0, 16, 8 \n" |
| "precr.qb.ph $t0, $t1, $t2 \n" // t0 = |a|b|g|r| |
| "usw $t0, 0($t5) \n" |
| |
| ".set pop \n" |
| : [filter_val] "+r" (filter_val), [filter_len] "+r" (filter_length), |
| [offset] "+r" (byte_offset), [fy] "+r" (filter_y), [cnt] "+r" (cnt), |
| [out_x] "+r" (out_x), [pixel_width] "+r" (pixel_width) |
| : [src_data_rows] "r" (source_data_rows), [out_row] "r" (out_row), |
| [kShiftBits] "r" (ConvolutionFilter1D::kShiftBits) |
| : "lo", "hi", "$ac1lo", "$ac1hi", "$ac2lo", "$ac2hi", "$ac3lo", "$ac3hi", |
| "t0", "t1", "t2", "t3", "t4", "t5", "t6","t7", "memory" |
| ); |
| } |
| } else { |
| for (int out_x = 0; out_x < pixel_width; out_x++) { |
| __asm__ __volatile__ ( |
| ".set push \n" |
| ".set noreorder \n" |
| |
| "beqz %[filter_len], 3f \n" |
| " sll %[offset], %[out_x], 2 \n" |
| "mtlo $0, $ac0 \n" |
| "mtlo $0, $ac1 \n" |
| "mtlo $0, $ac2 \n" |
| "srl %[cnt], %[filter_len], 2 \n" |
| "beqz %[cnt], 2f \n" |
| " li %[fy], 0 \n" |
| |
| "11: \n" |
| "sll $t1, %[fy], 1 \n" |
| "addu $t0, %[src_data_rows], $t1 \n" |
| "lw $t1, 0($t0) \n" |
| "lw $t2, 4($t0) \n" |
| "lw $t3, 8($t0) \n" |
| "lw $t4, 12($t0) \n" |
| "addu $t1, $t1, %[offset] \n" |
| "addu $t2, $t2, %[offset] \n" |
| "addu $t3, $t3, %[offset] \n" |
| "addu $t4, $t4, %[offset] \n" |
| "lw $t1, 0($t1) \n" // t1 = |a0|b0|g0|r0| |
| "lw $t2, 0($t2) \n" // t2 = |a1|b1|g1|r1| |
| "lw $t3, 0($t3) \n" // t3 = |a0|b0|g0|r0| |
| "lw $t4, 0($t4) \n" // t4 = |a1|b1|g1|r1| |
| "precrq.qb.ph $t5, $t2, $t1 \n" // t5 = |a1|g1|a0|g0| |
| "precr.qb.ph $t6, $t2, $t1 \n" // t6 = |b1|r1|b0|r0| |
| "preceu.ph.qbra $t1, $t5 \n" // t1 = |0|g1|0|g0| |
| "preceu.ph.qbla $t2, $t6 \n" // t2 = |0|b1|0|b0| |
| "preceu.ph.qbra $t5, $t6 \n" // t5 = |0|r1|0|r0| |
| "addu $t6, %[filter_val], %[fy] \n" |
| "ulw $t0, 0($t6) \n" // t0 = |cur_1|cur_0| |
| "ulw $t6, 4($t6) \n" // t6 = |cur_1|cur_0| |
| "dpa.w.ph $ac0, $t5, $t0 \n" // (cur*r1)+(cur*r0) |
| "dpa.w.ph $ac1, $t1, $t0 \n" // (cur*g1)+(cur*g0) |
| "dpa.w.ph $ac2, $t2, $t0 \n" // (cur*b1)+(cur*b0) |
| "precrq.qb.ph $t5, $t4, $t3 \n" // t5 = |a3|g3|a2|g2| |
| "precr.qb.ph $t0, $t4, $t3 \n" // t0 = |b3|r3|b2|r2| |
| "preceu.ph.qbra $t1, $t5 \n" // t1 = |0|g3|0|g2| |
| "preceu.ph.qbla $t2, $t0 \n" // t2 = |0|b3|0|b2| |
| "preceu.ph.qbra $t5, $t0 \n" // t5 = |0|r3|0|r2| |
| "dpa.w.ph $ac0, $t5, $t6 \n" // (cur*r1)+(cur*r0) |
| "dpa.w.ph $ac1, $t1, $t6 \n" // (cur*g1)+(cur*g0) |
| "dpa.w.ph $ac2, $t2, $t6 \n" // (cur*b1)+(cur*b0) |
| "addiu %[cnt], %[cnt], -1 \n" |
| "bgtz %[cnt], 11b \n" |
| " addiu %[fy], %[fy], 8 \n" |
| |
| "2: \n" |
| "andi %[cnt], %[filter_len], 0x3 \n" // residual |
| "beqz %[cnt], 3f \n" |
| " nop \n" |
| |
| "21: \n" |
| "addu $t0, %[filter_val], %[fy] \n" |
| "lh $t4, 0($t0) \n" // filter_val[fx] |
| "sll $t1, %[fy], 1 \n" |
| "addu $t0, %[src_data_rows], $t1 \n" |
| "lw $t1, 0($t0) \n" |
| "addu $t0, $t1, %[offset] \n" |
| "lbu $t1, 0($t0) \n" // t1 = row[fx*4 + 0] |
| "lbu $t2, 1($t0) \n" // t2 = row[fx*4 + 1] |
| "lbu $t3, 2($t0) \n" // t3 = row[fx*4 + 2] |
| "maddu $ac0, $t4, $t1 \n" |
| "maddu $ac1, $t4, $t2 \n" |
| "maddu $ac2, $t4, $t3 \n" |
| "addiu %[cnt], %[cnt], -1 \n" |
| "bgtz %[cnt], 21b \n" |
| " addiu %[fy], %[fy], 2 \n" |
| |
| "3: \n" |
| "extrv.w $t3, $ac0, %[kShiftBits] \n" // r >> kShiftBits |
| "extrv.w $t2, $ac1, %[kShiftBits] \n" // g >> kShiftBits |
| "extrv.w $t1, $ac2, %[kShiftBits] \n" // b >> kShiftBits |
| "repl.ph $t6, 128 \n" // t6 = | 128 | 128 | |
| "addu $t5, %[out_row], %[offset] \n" |
| "append $t2, $t3, 16 \n" // t2 = |0|g|0|r| |
| "andi $t1, $t1, 0xFFFF \n" |
| "subu.ph $t1, $t1, $t6 \n" |
| "shll_s.ph $t1, $t1, 8 \n" |
| "shra.ph $t1, $t1, 8 \n" |
| "addu.ph $t1, $t1, $t6 \n" // Clamp(a)|Clamp(b) |
| "subu.ph $t2, $t2, $t6 \n" |
| "shll_s.ph $t2, $t2, 8 \n" |
| "shra.ph $t2, $t2, 8 \n" |
| "addu.ph $t2, $t2, $t6 \n" // Clamp(g)|Clamp(r) |
| "li $t0, 0xFF \n" |
| "ins $t1, $t0, 16, 8 \n" |
| "precr.qb.ph $t0, $t1, $t2 \n" // t0 = |a|b|g|r| |
| "usw $t0, 0($t5) \n" |
| |
| ".set pop \n" |
| : [filter_val] "+r" (filter_val), [filter_len] "+r" (filter_length), |
| [offset] "+r" (byte_offset), [fy] "+r" (filter_y), [cnt] "+r" (cnt), |
| [out_x] "+r" (out_x), [pixel_width] "+r" (pixel_width) |
| : [src_data_rows] "r" (source_data_rows), [out_row] "r" (out_row), |
| [kShiftBits] "r" (ConvolutionFilter1D::kShiftBits) |
| : "lo", "hi", "$ac1lo", "$ac1hi", "$ac2lo", "$ac2hi", "$ac3lo", "$ac3hi", |
| "t0", "t1", "t2", "t3", "t4", "t5", "t6", "memory" |
| ); |
| } |
| } |
| #endif |
| } |
| } // namespace skia |
