mirror of
https://github.com/webmproject/libwebp.git
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MIPS: rescaler code synced with C implementation
Change-Id: I4cec115d3fe6f3f825084d7388249694c500256a
This commit is contained in:
Djordje Pesut
committed by
Pascal Massimino
Pascal Massimino
parent
d26d9def80
commit
e7fb267df7
@@ -18,6 +18,9 @@
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#include <assert.h>
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#include "../utils/rescaler.h"
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//------------------------------------------------------------------------------
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// Row import
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static void ImportRowShrink(WebPRescaler* const wrk, const uint8_t* src) {
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const int x_stride = wrk->num_channels;
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const int x_out_max = wrk->dst_width * wrk->num_channels;
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@@ -35,7 +38,7 @@ static void ImportRowShrink(WebPRescaler* const wrk, const uint8_t* src) {
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int temp1, temp2, temp3;
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int base, frac, sum;
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int accum, accum1;
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int loop_c = x_out_max;
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int loop_c = x_out_max - channel;
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__asm__ volatile (
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"li %[temp1], 0x8000 \n\t"
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@@ -57,23 +60,23 @@ static void ImportRowShrink(WebPRescaler* const wrk, const uint8_t* src) {
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"mul %[frac], %[base], %[accum1] \n\t"
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"mul %[temp3], %[sum], %[x_sub] \n\t"
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"subu %[loop_c], %[loop_c], %[x_stride] \n\t"
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"sll %[accum1], %[frac], 2 \n\t"
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"mult %[temp1], %[temp2] \n\t"
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"madd %[accum1], %[fx_scale] \n\t"
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"maddu %[frac], %[fx_scale] \n\t"
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"mfhi %[sum] \n\t"
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"subu %[temp3], %[temp3], %[frac] \n\t"
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"sw %[temp3], 0(%[frow]) \n\t"
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"addu %[frow], %[frow], %[x_stride1] \n\t"
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"bgtz %[loop_c], 1b \n\t"
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: [accum] "=&r" (accum), [src1] "+r" (src1), [temp3] "=&r" (temp3),
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[sum] "=&r" (sum), [base] "=&r" (base), [frac] "=&r" (frac),
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[frow] "+r" (frow), [accum1] "=&r" (accum1),
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[temp2] "=&r" (temp2), [temp1] "=&r" (temp1)
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: [x_stride] "r" (x_stride), [fx_scale] "r" (fx_scale),
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[x_sub] "r" (x_sub), [x_add] "r" (x_add),
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[loop_c] "r" (loop_c), [x_stride1] "r" (x_stride1)
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: [accum]"=&r"(accum), [src1]"+r"(src1), [temp3]"=&r"(temp3),
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[sum]"=&r"(sum), [base]"=&r"(base), [frac]"=&r"(frac),
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[frow]"+r"(frow), [accum1]"=&r"(accum1),
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[temp2]"=&r"(temp2), [temp1]"=&r"(temp1)
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: [x_stride]"r"(x_stride), [fx_scale]"r"(fx_scale),
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[x_sub]"r"(x_sub), [x_add]"r"(x_add),
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[loop_c]"r"(loop_c), [x_stride1]"r"(x_stride1)
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: "memory", "hi", "lo"
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);
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assert(accum == 0);
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}
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}
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@@ -94,7 +97,7 @@ static void ImportRowExpand(WebPRescaler* const wrk, const uint8_t* src) {
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int temp1, temp2, temp3, temp4;
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int frac;
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int accum;
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int x_out = 0;
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int x_out = channel;
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__asm__ volatile (
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"addiu %[temp3], %[src_width], -1 \n\t"
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@@ -126,12 +129,79 @@ static void ImportRowExpand(WebPRescaler* const wrk, const uint8_t* src) {
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"4: \n\t"
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"b 1b \n\t"
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"2: \n\t"
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: [src1] "+r" (src1), [accum] "=&r" (accum), [temp1] "=&r" (temp1),
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[temp2] "=&r" (temp2), [temp3] "=&r" (temp3), [temp4] "=&r" (temp4),
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[x_out] "+r" (x_out), [frac] "=&r" (frac), [frow] "+r" (frow)
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: [x_stride] "r" (x_stride), [x_add] "r" (x_add), [x_sub] "r" (x_sub),
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[x_stride1] "r" (x_stride1), [src_width] "r" (src_width),
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[x_out_max] "r" (x_out_max)
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: [src1]"+r"(src1), [accum]"=&r"(accum), [temp1]"=&r"(temp1),
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[temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4),
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[x_out]"+r"(x_out), [frac]"=&r"(frac), [frow]"+r"(frow)
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: [x_stride]"r"(x_stride), [x_add]"r"(x_add), [x_sub]"r"(x_sub),
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[x_stride1]"r"(x_stride1), [src_width]"r"(src_width),
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[x_out_max]"r"(x_out_max)
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: "memory", "hi", "lo"
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);
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assert(wrk->x_sub == 0 /* <- special case for src_width=1 */ || accum == 0);
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}
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}
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//------------------------------------------------------------------------------
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// Row export
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static void ExportRowExpand(WebPRescaler* const wrk) {
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uint8_t* dst = wrk->dst;
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rescaler_t* irow = wrk->irow;
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const int x_out_max = wrk->dst_width * wrk->num_channels;
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const rescaler_t* frow = wrk->frow;
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int temp0, temp1, temp3, temp4, temp5, loop_end;
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const int temp2 = (int)wrk->fy_scale;
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const int temp6 = x_out_max << 2;
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assert(!WebPRescalerOutputDone(wrk));
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assert(wrk->y_accum <= 0);
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assert(wrk->y_expand);
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assert(wrk->y_sub != 0);
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if (wrk->y_accum == 0) {
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__asm__ volatile (
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"li %[temp3], 0x10000 \n\t"
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"li %[temp4], 0x8000 \n\t"
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"addu %[loop_end], %[frow], %[temp6] \n\t"
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"1: \n\t"
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"lw %[temp0], 0(%[frow]) \n\t"
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"addiu %[dst], %[dst], 1 \n\t"
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"addiu %[frow], %[frow], 4 \n\t"
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"mult %[temp3], %[temp4] \n\t"
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"maddu %[temp0], %[temp2] \n\t"
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"mfhi %[temp5] \n\t"
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"sb %[temp5], -1(%[dst]) \n\t"
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"bne %[frow], %[loop_end], 1b \n\t"
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: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
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[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
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[dst]"+r"(dst), [loop_end]"=&r"(loop_end)
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: [temp2]"r"(temp2), [temp6]"r"(temp6)
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: "memory", "hi", "lo"
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);
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} else {
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const uint32_t B = WEBP_RESCALER_FRAC(-wrk->y_accum, wrk->y_sub);
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const uint32_t A = (uint32_t)(WEBP_RESCALER_ONE - B);
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__asm__ volatile (
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"li %[temp3], 0x10000 \n\t"
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"li %[temp4], 0x8000 \n\t"
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"addu %[loop_end], %[frow], %[temp6] \n\t"
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"1: \n\t"
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"lw %[temp0], 0(%[frow]) \n\t"
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"lw %[temp1], 0(%[irow]) \n\t"
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"addiu %[dst], %[dst], 1 \n\t"
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"mult %[temp3], %[temp4] \n\t"
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"maddu %[A], %[temp0] \n\t"
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"maddu %[B], %[temp1] \n\t"
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"addiu %[frow], %[frow], 4 \n\t"
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"addiu %[irow], %[irow], 4 \n\t"
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"mfhi %[temp5] \n\t"
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"mult %[temp3], %[temp4] \n\t"
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"maddu %[temp5], %[temp2] \n\t"
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"mfhi %[temp5] \n\t"
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"sb %[temp5], -1(%[dst]) \n\t"
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"bne %[frow], %[loop_end], 1b \n\t"
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: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
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[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
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[irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end)
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: [temp2]"r"(temp2), [temp6]"r"(temp6), [A]"r"(A), [B]"r"(B)
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: "memory", "hi", "lo"
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);
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}
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@@ -143,73 +213,75 @@ static void ExportRowShrink(WebPRescaler* const wrk) {
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rescaler_t* irow = wrk->irow;
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const rescaler_t* frow = wrk->frow;
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const int yscale = wrk->fy_scale * (-wrk->y_accum);
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int temp0, temp1, temp3, temp4, temp5, temp6, temp7, loop_end;
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int temp0, temp1, temp3, temp4, temp5, loop_end;
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const int temp2 = (int)wrk->fxy_scale;
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const int temp8 = x_out_max << 2;
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const int temp6 = x_out_max << 2;
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assert(!WebPRescalerOutputDone(wrk));
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assert(wrk->y_accum <= 0);
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assert(!wrk->y_expand);
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assert(wrk->fxy_scale != 0);
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__asm__ volatile(
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"addiu %[temp6], $zero, -256 \n\t"
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"addiu %[temp7], $zero, 255 \n\t"
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if (yscale) {
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__asm__ volatile (
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"li %[temp3], 0x10000 \n\t"
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"li %[temp4], 0x8000 \n\t"
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"addu %[loop_end], %[frow], %[temp8] \n\t"
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"addu %[loop_end], %[frow], %[temp6] \n\t"
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"1: \n\t"
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"lw %[temp0], 0(%[frow]) \n\t"
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"mult %[temp3], %[temp4] \n\t"
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"addiu %[frow], %[frow], 4 \n\t"
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"sll %[temp0], %[temp0], 2 \n\t"
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"madd %[temp0], %[yscale] \n\t"
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"maddu %[temp0], %[yscale] \n\t"
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"mfhi %[temp1] \n\t"
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"lw %[temp0], 0(%[irow]) \n\t"
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"addiu %[dst], %[dst], 1 \n\t"
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"addiu %[irow], %[irow], 4 \n\t"
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"subu %[temp0], %[temp0], %[temp1] \n\t"
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"mult %[temp3], %[temp4] \n\t"
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"sll %[temp0], %[temp0], 2 \n\t"
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"madd %[temp0], %[temp2] \n\t"
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"maddu %[temp0], %[temp2] \n\t"
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"mfhi %[temp5] \n\t"
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"sw %[temp1], -4(%[irow]) \n\t"
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"and %[temp0], %[temp5], %[temp6] \n\t"
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"slti %[temp1], %[temp5], 0 \n\t"
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"beqz %[temp0], 2f \n\t"
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"xor %[temp5], %[temp5], %[temp5] \n\t"
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"movz %[temp5], %[temp7], %[temp1] \n\t"
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"2: \n\t"
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"sb %[temp5], -1(%[dst]) \n\t"
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"bne %[frow], %[loop_end], 1b \n\t"
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: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
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[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp6]"=&r"(temp6),
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[temp7]"=&r"(temp7), [frow]"+r"(frow), [irow]"+r"(irow),
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[dst]"+r"(dst), [loop_end]"=&r"(loop_end)
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: [temp2]"r"(temp2), [yscale]"r"(yscale), [temp8]"r"(temp8)
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[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
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[irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end)
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: [temp2]"r"(temp2), [yscale]"r"(yscale), [temp6]"r"(temp6)
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: "memory", "hi", "lo"
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);
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} else {
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__asm__ volatile (
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"li %[temp3], 0x10000 \n\t"
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"li %[temp4], 0x8000 \n\t"
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"addu %[loop_end], %[irow], %[temp6] \n\t"
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"1: \n\t"
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"lw %[temp0], 0(%[irow]) \n\t"
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"addiu %[dst], %[dst], 1 \n\t"
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"addiu %[irow], %[irow], 4 \n\t"
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"mult %[temp3], %[temp4] \n\t"
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"maddu %[temp0], %[temp2] \n\t"
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"mfhi %[temp5] \n\t"
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"sw $zero, -4(%[irow]) \n\t"
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"sb %[temp5], -1(%[dst]) \n\t"
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"bne %[irow], %[loop_end], 1b \n\t"
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: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
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[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [irow]"+r"(irow),
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[dst]"+r"(dst), [loop_end]"=&r"(loop_end)
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: [temp2]"r"(temp2), [temp6]"r"(temp6)
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: "memory", "hi", "lo"
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);
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}
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}
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// no ExportRowExpand yet.
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//------------------------------------------------------------------------------
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// Entry point
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extern void WebPRescalerDspInitMIPS32(void);
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WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInitMIPS32(void) {
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#if 0
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// The assembly code is currently out-of-sync wrt the C-implementation.
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// Disabled for now.
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WebPRescalerImportRowExpand = ImportRowExpand;
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WebPRescalerImportRowShrink = ImportRowShrink;
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WebPRescalerExportRowExpand = ExportRowExpand;
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WebPRescalerExportRowShrink = ExportRowShrink;
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#else
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(void)ImportRowExpand;
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(void)ImportRowShrink;
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(void)ExportRowShrink;
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#endif
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}
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#else // !WEBP_USE_MIPS32
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@@ -18,201 +18,284 @@
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#include <assert.h>
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#include "../utils/rescaler.h"
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static void ImportRowShrink(WebPRescaler* const wrk, const uint8_t* src) {
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const int x_stride = wrk->num_channels;
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const int x_out_max = wrk->dst_width * wrk->num_channels;
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const int fx_scale = wrk->fx_scale;
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const int x_add = wrk->x_add;
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const int x_sub = wrk->x_sub;
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const int x_stride1 = x_stride << 2;
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int channel;
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assert(!wrk->x_expand);
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assert(!WebPRescalerInputDone(wrk));
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#define ROUNDER (WEBP_RESCALER_ONE >> 1)
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#define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX)
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for (channel = 0; channel < x_stride; ++channel) {
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rescaler_t* frow = wrk->frow + channel;
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const uint8_t* src1 = src + channel;
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int temp3;
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int base, frac, sum;
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int accum, accum1;
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int loop_c = x_out_max;
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__asm__ volatile (
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"li %[sum], 0 \n\t"
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"li %[accum], 0 \n\t"
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"1: \n\t"
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"addu %[accum], %[accum], %[x_add] \n\t"
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"li %[base], 0 \n\t"
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"blez %[accum], 3f \n\t"
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"2: \n\t"
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"lbu %[base], 0(%[src1]) \n\t"
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"subu %[accum], %[accum], %[x_sub] \n\t"
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"addu %[src1], %[src1], %[x_stride] \n\t"
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"addu %[sum], %[sum], %[base] \n\t"
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"bgtz %[accum], 2b \n\t"
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"3: \n\t"
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"negu %[accum1], %[accum] \n\t"
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"mul %[frac], %[base], %[accum1] \n\t"
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"mul %[temp3], %[sum], %[x_sub] \n\t"
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"sll %[accum1], %[frac], 1 \n\t"
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"subu %[loop_c], %[loop_c], %[x_stride] \n\t"
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"mulq_rs.w %[sum], %[accum1], %[fx_scale] \n\t"
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"subu %[temp3], %[temp3], %[frac] \n\t"
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"sw %[temp3], 0(%[frow]) \n\t"
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"addu %[frow], %[frow], %[x_stride1] \n\t"
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"bgtz %[loop_c], 1b \n\t"
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: [accum]"=&r"(accum), [src1]"+&r"(src1), [temp3]"=&r"(temp3),
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[sum]"=&r"(sum), [base]"=&r"(base), [frac]"=&r"(frac),
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[frow]"+&r"(frow), [accum1]"=&r"(accum1),
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[loop_c]"+&r"(loop_c)
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: [x_stride]"r"(x_stride), [fx_scale]"r"(fx_scale), [x_sub]"r"(x_sub),
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[x_add] "r" (x_add), [x_stride1] "r" (x_stride1)
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: "memory", "hi", "lo"
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);
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}
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}
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static void ImportRowExpand(WebPRescaler* const wrk, const uint8_t* src) {
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const int x_stride = wrk->num_channels;
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const int x_out_max = wrk->dst_width * wrk->num_channels;
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const int x_add = wrk->x_add;
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const int x_sub = wrk->x_sub;
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const int src_width = wrk->src_width;
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const int x_stride1 = x_stride << 2;
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int channel;
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assert(wrk->x_expand);
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assert(!WebPRescalerInputDone(wrk));
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for (channel = 0; channel < x_stride; ++channel) {
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rescaler_t* frow = wrk->frow + channel;
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const uint8_t* src1 = src + channel;
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int temp1, temp2, temp3, temp4;
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int frac;
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int accum;
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int x_out = channel;
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__asm__ volatile (
|
||||
"addiu %[temp3], %[src_width], -1 \n\t"
|
||||
"lbu %[temp2], 0(%[src1]) \n\t"
|
||||
"addu %[src1], %[src1], %[x_stride] \n\t"
|
||||
"bgtz %[temp3], 0f \n\t"
|
||||
"addiu %[temp1], %[temp2], 0 \n\t"
|
||||
"b 3f \n\t"
|
||||
"0: \n\t"
|
||||
"lbu %[temp1], 0(%[src1]) \n\t"
|
||||
"3: \n\t"
|
||||
"addiu %[accum], %[x_add], 0 \n\t"
|
||||
"1: \n\t"
|
||||
"subu %[temp3], %[temp2], %[temp1] \n\t"
|
||||
"mul %[temp3], %[temp3], %[accum] \n\t"
|
||||
"mul %[temp4], %[temp1], %[x_add] \n\t"
|
||||
"addu %[temp3], %[temp4], %[temp3] \n\t"
|
||||
"sw %[temp3], 0(%[frow]) \n\t"
|
||||
"addu %[frow], %[frow], %[x_stride1] \n\t"
|
||||
"addu %[x_out], %[x_out], %[x_stride] \n\t"
|
||||
"subu %[temp3], %[x_out], %[x_out_max] \n\t"
|
||||
"bgez %[temp3], 2f \n\t"
|
||||
"subu %[accum], %[accum], %[x_sub] \n\t"
|
||||
"bgez %[accum], 4f \n\t"
|
||||
"addiu %[temp2], %[temp1], 0 \n\t"
|
||||
"addu %[src1], %[src1], %[x_stride] \n\t"
|
||||
"lbu %[temp1], 0(%[src1]) \n\t"
|
||||
"addu %[accum], %[accum], %[x_add] \n\t"
|
||||
"4: \n\t"
|
||||
"b 1b \n\t"
|
||||
"2: \n\t"
|
||||
: [src1] "+r" (src1), [accum] "=&r" (accum), [temp1] "=&r" (temp1),
|
||||
[temp2] "=&r" (temp2), [temp3] "=&r" (temp3), [temp4] "=&r" (temp4),
|
||||
[x_out] "+r" (x_out), [frac] "=&r" (frac), [frow] "+r" (frow)
|
||||
: [x_stride] "r" (x_stride), [x_add] "r" (x_add), [x_sub] "r" (x_sub),
|
||||
[x_stride1] "r" (x_stride1), [src_width] "r" (src_width),
|
||||
[x_out_max] "r" (x_out_max)
|
||||
: "memory", "hi", "lo"
|
||||
);
|
||||
}
|
||||
}
|
||||
//------------------------------------------------------------------------------
|
||||
// Row export
|
||||
|
||||
static void ExportRowShrink(WebPRescaler* const wrk) {
|
||||
int i;
|
||||
const int x_out_max = wrk->dst_width * wrk->num_channels;
|
||||
uint8_t* dst = wrk->dst;
|
||||
rescaler_t* irow = wrk->irow;
|
||||
const rescaler_t* frow = wrk->frow;
|
||||
const int yscale = wrk->fy_scale * (-wrk->y_accum);
|
||||
int temp0, temp1, temp2, temp3, temp4, temp5, loop_end;
|
||||
const int temp7 = (int)wrk->fxy_scale;
|
||||
const int temp6 = (x_out_max & ~0x3) << 2;
|
||||
assert(!WebPRescalerOutputDone(wrk));
|
||||
assert(wrk->y_accum <= 0);
|
||||
assert(!wrk->y_expand);
|
||||
assert(wrk->fxy_scale != 0);
|
||||
if (yscale) {
|
||||
if (x_out_max >= 4) {
|
||||
int temp8, temp9, temp10, temp11;
|
||||
__asm__ volatile (
|
||||
"li %[temp3], 0x10000 \n\t"
|
||||
"li %[temp4], 0x8000 \n\t"
|
||||
"addu %[loop_end], %[frow], %[temp6] \n\t"
|
||||
"1: \n\t"
|
||||
"lw %[temp0], 0(%[frow]) \n\t"
|
||||
"lw %[temp1], 4(%[frow]) \n\t"
|
||||
"lw %[temp2], 8(%[frow]) \n\t"
|
||||
"lw %[temp5], 12(%[frow]) \n\t"
|
||||
"mult $ac0, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac0, %[temp0], %[yscale] \n\t"
|
||||
"mult $ac1, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac1, %[temp1], %[yscale] \n\t"
|
||||
"mult $ac2, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac2, %[temp2], %[yscale] \n\t"
|
||||
"mult $ac3, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac3, %[temp5], %[yscale] \n\t"
|
||||
"addiu %[frow], %[frow], 16 \n\t"
|
||||
"mfhi %[temp0], $ac0 \n\t"
|
||||
"mfhi %[temp1], $ac1 \n\t"
|
||||
"mfhi %[temp2], $ac2 \n\t"
|
||||
"mfhi %[temp5], $ac3 \n\t"
|
||||
"lw %[temp8], 0(%[irow]) \n\t"
|
||||
"lw %[temp9], 4(%[irow]) \n\t"
|
||||
"lw %[temp10], 8(%[irow]) \n\t"
|
||||
"lw %[temp11], 12(%[irow]) \n\t"
|
||||
"addiu %[dst], %[dst], 4 \n\t"
|
||||
"addiu %[irow], %[irow], 16 \n\t"
|
||||
"subu %[temp8], %[temp8], %[temp0] \n\t"
|
||||
"subu %[temp9], %[temp9], %[temp1] \n\t"
|
||||
"subu %[temp10], %[temp10], %[temp2] \n\t"
|
||||
"subu %[temp11], %[temp11], %[temp5] \n\t"
|
||||
"mult $ac0, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac0, %[temp8], %[temp7] \n\t"
|
||||
"mult $ac1, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac1, %[temp9], %[temp7] \n\t"
|
||||
"mult $ac2, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac2, %[temp10], %[temp7] \n\t"
|
||||
"mult $ac3, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac3, %[temp11], %[temp7] \n\t"
|
||||
"mfhi %[temp8], $ac0 \n\t"
|
||||
"mfhi %[temp9], $ac1 \n\t"
|
||||
"mfhi %[temp10], $ac2 \n\t"
|
||||
"mfhi %[temp11], $ac3 \n\t"
|
||||
"sw %[temp0], -16(%[irow]) \n\t"
|
||||
"sw %[temp1], -12(%[irow]) \n\t"
|
||||
"sw %[temp2], -8(%[irow]) \n\t"
|
||||
"sw %[temp5], -4(%[irow]) \n\t"
|
||||
"sb %[temp8], -4(%[dst]) \n\t"
|
||||
"sb %[temp9], -3(%[dst]) \n\t"
|
||||
"sb %[temp10], -2(%[dst]) \n\t"
|
||||
"sb %[temp11], -1(%[dst]) \n\t"
|
||||
"bne %[frow], %[loop_end], 1b \n\t"
|
||||
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
|
||||
[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
|
||||
[irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end),
|
||||
[temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10),
|
||||
[temp11]"=&r"(temp11), [temp2]"=&r"(temp2)
|
||||
: [temp7]"r"(temp7), [yscale]"r"(yscale), [temp6]"r"(temp6)
|
||||
: "memory", "hi", "lo", "$ac1hi", "$ac1lo",
|
||||
"$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
|
||||
);
|
||||
}
|
||||
for (i = 0; i < (x_out_max & 0x3); ++i) {
|
||||
const uint32_t frac = (uint32_t)MULT_FIX(*frow++, yscale);
|
||||
const int v = (int)MULT_FIX(*irow - frac, wrk->fxy_scale);
|
||||
assert(v >= 0 && v <= 255);
|
||||
*dst++ = v;
|
||||
*irow++ = frac; // new fractional start
|
||||
}
|
||||
} else {
|
||||
if (x_out_max >= 4) {
|
||||
__asm__ volatile (
|
||||
"li %[temp3], 0x10000 \n\t"
|
||||
"li %[temp4], 0x8000 \n\t"
|
||||
"addu %[loop_end], %[irow], %[temp6] \n\t"
|
||||
"1: \n\t"
|
||||
"lw %[temp0], 0(%[irow]) \n\t"
|
||||
"lw %[temp1], 4(%[irow]) \n\t"
|
||||
"lw %[temp2], 8(%[irow]) \n\t"
|
||||
"lw %[temp5], 12(%[irow]) \n\t"
|
||||
"addiu %[dst], %[dst], 4 \n\t"
|
||||
"addiu %[irow], %[irow], 16 \n\t"
|
||||
"mult $ac0, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac0, %[temp0], %[temp7] \n\t"
|
||||
"mult $ac1, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac1, %[temp1], %[temp7] \n\t"
|
||||
"mult $ac2, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac2, %[temp2], %[temp7] \n\t"
|
||||
"mult $ac3, %[temp3], %[temp4] \n\t"
|
||||
"maddu $ac3, %[temp5], %[temp7] \n\t"
|
||||
"mfhi %[temp0], $ac0 \n\t"
|
||||
"mfhi %[temp1], $ac1 \n\t"
|
||||
"mfhi %[temp2], $ac2 \n\t"
|
||||
"mfhi %[temp5], $ac3 \n\t"
|
||||
"sw $zero, -16(%[irow]) \n\t"
|
||||
"sw $zero, -12(%[irow]) \n\t"
|
||||
"sw $zero, -8(%[irow]) \n\t"
|
||||
"sw $zero, -4(%[irow]) \n\t"
|
||||
"sb %[temp0], -4(%[dst]) \n\t"
|
||||
"sb %[temp1], -3(%[dst]) \n\t"
|
||||
"sb %[temp2], -2(%[dst]) \n\t"
|
||||
"sb %[temp5], -1(%[dst]) \n\t"
|
||||
"bne %[irow], %[loop_end], 1b \n\t"
|
||||
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
|
||||
[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [irow]"+r"(irow),
|
||||
[dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2)
|
||||
: [temp7]"r"(temp7), [temp6]"r"(temp6)
|
||||
: "memory", "hi", "lo", "$ac1hi", "$ac1lo",
|
||||
"$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
|
||||
);
|
||||
}
|
||||
for (i = 0; i < (x_out_max & 0x3); ++i) {
|
||||
const int v = (int)MULT_FIX(*irow, wrk->fxy_scale);
|
||||
assert(v >= 0 && v <= 255);
|
||||
*dst++ = v;
|
||||
*irow++ = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void ExportRowExpand(WebPRescaler* const wrk) {
|
||||
int i;
|
||||
uint8_t* dst = wrk->dst;
|
||||
rescaler_t* irow = wrk->irow;
|
||||
const int x_out_max = wrk->dst_width * wrk->num_channels;
|
||||
const rescaler_t* frow = wrk->frow;
|
||||
const int yscale = wrk->fy_scale * (-wrk->y_accum);
|
||||
|
||||
int temp0, temp1, temp3, temp4, temp5, temp6, temp7;
|
||||
const int temp2 = (int)wrk->fxy_scale;
|
||||
const int rest = x_out_max & 1;
|
||||
const rescaler_t* const loop_end = frow + x_out_max - rest;
|
||||
|
||||
int temp0, temp1, temp2, temp3, temp4, temp5, loop_end;
|
||||
const int temp6 = (x_out_max & ~0x3) << 2;
|
||||
const int temp7 = (int)wrk->fy_scale;
|
||||
assert(!WebPRescalerOutputDone(wrk));
|
||||
assert(wrk->y_accum <= 0);
|
||||
assert(!wrk->y_expand);
|
||||
assert(wrk->fxy_scale);
|
||||
assert(wrk->y_expand);
|
||||
assert(wrk->y_sub != 0);
|
||||
if (wrk->y_accum == 0) {
|
||||
if (x_out_max >= 4) {
|
||||
__asm__ volatile (
|
||||
".set push \n\t"
|
||||
".set noreorder \n\t"
|
||||
"beq %[frow], %[loop_end], 1f \n\t"
|
||||
" nop \n\t"
|
||||
"0: \n\t"
|
||||
"lw %[temp0], 0(%[frow]) \n\t"
|
||||
"lw %[temp1], 0(%[irow]) \n\t"
|
||||
"lw %[temp3], 4(%[frow]) \n\t"
|
||||
"lw %[temp4], 4(%[irow]) \n\t"
|
||||
"sll %[temp0], %[temp0], 1 \n\t"
|
||||
"sll %[temp3], %[temp3], 1 \n\t"
|
||||
"mulq_rs.w %[temp5], %[temp0], %[yscale] \n\t"
|
||||
"mulq_rs.w %[temp6], %[temp3], %[yscale] \n\t"
|
||||
"addiu %[frow], %[frow], 8 \n\t"
|
||||
"addiu %[dst], %[dst], 2 \n\t"
|
||||
"addiu %[irow], %[irow], 8 \n\t"
|
||||
"subu %[temp1], %[temp1], %[temp5] \n\t"
|
||||
"subu %[temp4], %[temp4], %[temp6] \n\t"
|
||||
"sll %[temp1], %[temp1], 1 \n\t"
|
||||
"sll %[temp4], %[temp4], 1 \n\t"
|
||||
"mulq_rs.w %[temp0], %[temp1], %[temp2] \n\t"
|
||||
"mulq_rs.w %[temp3], %[temp4], %[temp2] \n\t"
|
||||
"sw %[temp5], -8(%[irow]) \n\t"
|
||||
"sw %[temp6], -4(%[irow]) \n\t"
|
||||
"shll_s.ph %[temp0], %[temp0], 7 \n\t"
|
||||
"shll_s.ph %[temp3], %[temp3], 7 \n\t"
|
||||
"precrqu_s.qb.ph %[temp0], %[temp0], %[temp3] \n\t"
|
||||
"sb %[temp0], -1(%[dst]) \n\t"
|
||||
"srl %[temp0], %[temp0], 16 \n\t"
|
||||
"bne %[frow], %[loop_end], 0b \n\t"
|
||||
" sb %[temp0], -2(%[dst]) \n\t"
|
||||
"li %[temp4], 0x10000 \n\t"
|
||||
"li %[temp5], 0x8000 \n\t"
|
||||
"addu %[loop_end], %[frow], %[temp6] \n\t"
|
||||
"1: \n\t"
|
||||
"beqz %[rest], 3f \n\t"
|
||||
" nop \n\t"
|
||||
"addiu %[temp6], $zero, -256 \n\t"
|
||||
"addiu %[temp7], $zero, 255 \n\t"
|
||||
"lw %[temp0], 0(%[frow]) \n\t"
|
||||
"sll %[temp0], %[temp0], 1 \n\t"
|
||||
"mulq_rs.w %[temp1], %[temp0], %[yscale] \n\t"
|
||||
"lw %[temp0], 0(%[irow]) \n\t"
|
||||
"subu %[temp0], %[temp0], %[temp1] \n\t"
|
||||
"sll %[temp0], %[temp0], 1 \n\t"
|
||||
"mulq_rs.w %[temp5], %[temp0], %[temp2] \n\t"
|
||||
"sw %[temp1], 0(%[irow]) \n\t"
|
||||
"and %[temp0], %[temp5], %[temp6] \n\t"
|
||||
"beqz %[temp0], 2f \n\t"
|
||||
" slti %[temp1], %[temp5], 0 \n\t"
|
||||
"xor %[temp5], %[temp5], %[temp5] \n\t"
|
||||
"movz %[temp5], %[temp7], %[temp1] \n\t"
|
||||
"2: \n\t"
|
||||
"sb %[temp5], 0(%[dst]) \n\t"
|
||||
"3: \n\t"
|
||||
".set pop \n\t"
|
||||
"lw %[temp1], 4(%[frow]) \n\t"
|
||||
"lw %[temp2], 8(%[frow]) \n\t"
|
||||
"lw %[temp3], 12(%[frow]) \n\t"
|
||||
"addiu %[dst], %[dst], 4 \n\t"
|
||||
"addiu %[frow], %[frow], 16 \n\t"
|
||||
"mult $ac0, %[temp4], %[temp5] \n\t"
|
||||
"maddu $ac0, %[temp0], %[temp7] \n\t"
|
||||
"mult $ac1, %[temp4], %[temp5] \n\t"
|
||||
"maddu $ac1, %[temp1], %[temp7] \n\t"
|
||||
"mult $ac2, %[temp4], %[temp5] \n\t"
|
||||
"maddu $ac2, %[temp2], %[temp7] \n\t"
|
||||
"mult $ac3, %[temp4], %[temp5] \n\t"
|
||||
"maddu $ac3, %[temp3], %[temp7] \n\t"
|
||||
"mfhi %[temp0], $ac0 \n\t"
|
||||
"mfhi %[temp1], $ac1 \n\t"
|
||||
"mfhi %[temp2], $ac2 \n\t"
|
||||
"mfhi %[temp3], $ac3 \n\t"
|
||||
"sb %[temp0], -4(%[dst]) \n\t"
|
||||
"sb %[temp1], -3(%[dst]) \n\t"
|
||||
"sb %[temp2], -2(%[dst]) \n\t"
|
||||
"sb %[temp3], -1(%[dst]) \n\t"
|
||||
"bne %[frow], %[loop_end], 1b \n\t"
|
||||
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
|
||||
[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp6]"=&r"(temp6),
|
||||
[temp7]"=&r"(temp7), [frow]"+&r"(frow), [irow]"+&r"(irow),
|
||||
[dst]"+&r"(dst)
|
||||
: [temp2]"r"(temp2), [yscale]"r"(yscale), [loop_end]"r"(loop_end),
|
||||
[rest]"r"(rest)
|
||||
: "memory", "hi", "lo"
|
||||
[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
|
||||
[dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2)
|
||||
: [temp7]"r"(temp7), [temp6]"r"(temp6)
|
||||
: "memory", "hi", "lo", "$ac1hi", "$ac1lo",
|
||||
"$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
|
||||
);
|
||||
}
|
||||
for (i = 0; i < (x_out_max & 0x3); ++i) {
|
||||
const uint32_t J = *frow++;
|
||||
const int v = (int)MULT_FIX(J, wrk->fy_scale);
|
||||
assert(v >= 0 && v <= 255);
|
||||
*dst++ = v;
|
||||
}
|
||||
} else {
|
||||
const uint32_t B = WEBP_RESCALER_FRAC(-wrk->y_accum, wrk->y_sub);
|
||||
const uint32_t A = (uint32_t)(WEBP_RESCALER_ONE - B);
|
||||
if (x_out_max >= 4) {
|
||||
int temp8, temp9, temp10, temp11;
|
||||
__asm__ volatile (
|
||||
"li %[temp8], 0x10000 \n\t"
|
||||
"li %[temp9], 0x8000 \n\t"
|
||||
"addu %[loop_end], %[frow], %[temp6] \n\t"
|
||||
"1: \n\t"
|
||||
"lw %[temp0], 0(%[frow]) \n\t"
|
||||
"lw %[temp1], 4(%[frow]) \n\t"
|
||||
"lw %[temp2], 8(%[frow]) \n\t"
|
||||
"lw %[temp3], 12(%[frow]) \n\t"
|
||||
"lw %[temp4], 0(%[irow]) \n\t"
|
||||
"lw %[temp5], 4(%[irow]) \n\t"
|
||||
"lw %[temp10], 8(%[irow]) \n\t"
|
||||
"lw %[temp11], 12(%[irow]) \n\t"
|
||||
"addiu %[dst], %[dst], 4 \n\t"
|
||||
"mult $ac0, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac0, %[A], %[temp0] \n\t"
|
||||
"maddu $ac0, %[B], %[temp4] \n\t"
|
||||
"mult $ac1, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac1, %[A], %[temp1] \n\t"
|
||||
"maddu $ac1, %[B], %[temp5] \n\t"
|
||||
"mult $ac2, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac2, %[A], %[temp2] \n\t"
|
||||
"maddu $ac2, %[B], %[temp10] \n\t"
|
||||
"mult $ac3, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac3, %[A], %[temp3] \n\t"
|
||||
"maddu $ac3, %[B], %[temp11] \n\t"
|
||||
"addiu %[frow], %[frow], 16 \n\t"
|
||||
"addiu %[irow], %[irow], 16 \n\t"
|
||||
"mfhi %[temp0], $ac0 \n\t"
|
||||
"mfhi %[temp1], $ac1 \n\t"
|
||||
"mfhi %[temp2], $ac2 \n\t"
|
||||
"mfhi %[temp3], $ac3 \n\t"
|
||||
"mult $ac0, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac0, %[temp0], %[temp7] \n\t"
|
||||
"mult $ac1, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac1, %[temp1], %[temp7] \n\t"
|
||||
"mult $ac2, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac2, %[temp2], %[temp7] \n\t"
|
||||
"mult $ac3, %[temp8], %[temp9] \n\t"
|
||||
"maddu $ac3, %[temp3], %[temp7] \n\t"
|
||||
"mfhi %[temp0], $ac0 \n\t"
|
||||
"mfhi %[temp1], $ac1 \n\t"
|
||||
"mfhi %[temp2], $ac2 \n\t"
|
||||
"mfhi %[temp3], $ac3 \n\t"
|
||||
"sb %[temp0], -4(%[dst]) \n\t"
|
||||
"sb %[temp1], -3(%[dst]) \n\t"
|
||||
"sb %[temp2], -2(%[dst]) \n\t"
|
||||
"sb %[temp3], -1(%[dst]) \n\t"
|
||||
"bne %[frow], %[loop_end], 1b \n\t"
|
||||
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
|
||||
[temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
|
||||
[irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end),
|
||||
[temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10),
|
||||
[temp11]"=&r"(temp11), [temp2]"=&r"(temp2)
|
||||
: [temp7]"r"(temp7), [temp6]"r"(temp6), [A]"r"(A), [B]"r"(B)
|
||||
: "memory", "hi", "lo", "$ac1hi", "$ac1lo",
|
||||
"$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
|
||||
);
|
||||
}
|
||||
for (i = 0; i < (x_out_max & 0x3); ++i) {
|
||||
const uint64_t I = (uint64_t)A * *frow++
|
||||
+ (uint64_t)B * *irow++;
|
||||
const uint32_t J = (uint32_t)((I + ROUNDER) >> WEBP_RESCALER_RFIX);
|
||||
const int v = (int)MULT_FIX(J, wrk->fy_scale);
|
||||
assert(v >= 0 && v <= 255);
|
||||
*dst++ = v;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// no ExportRowExpand yet.
|
||||
#undef MULT_FIX
|
||||
#undef ROUNDER
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
// Entry point
|
||||
@@ -220,17 +303,8 @@ static void ExportRowShrink(WebPRescaler* const wrk) {
|
||||
extern void WebPRescalerDspInitMIPSdspR2(void);
|
||||
|
||||
WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInitMIPSdspR2(void) {
|
||||
#if 0
|
||||
// The assembly code is currently out-of-sync wrt the C-implementation.
|
||||
// Disabled for now.
|
||||
WebPRescalerImportRowExpand = ImportRowExpand;
|
||||
WebPRescalerImportRowShrink = ImportRowShrink;
|
||||
WebPRescalerExportRowExpand = ExportRowExpand;
|
||||
WebPRescalerExportRowShrink = ExportRowShrink;
|
||||
#else
|
||||
(void)ImportRowExpand;
|
||||
(void)ImportRowShrink;
|
||||
(void)ExportRowShrink;
|
||||
#endif
|
||||
}
|
||||
|
||||
#else // !WEBP_USE_MIPS_DSP_R2
|
||||
|
||||
Reference in New Issue
Block a user