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rescaler: move the 1x1 or 2x1 handling one level up

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=> no need to handle it in the sub-functions.

Change-Id: I4b0211ecfafbc9c80a73bf2206809a13c94e7911
This commit is contained in:
Pascal Massimino
2015-09-25 18:49:28 +00:00
committed by James Zern
parent cced974bb2
commit 306ce4fde1
5 changed files with 127 additions and 143 deletions
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95
src/dsp/rescaler_mips32.c
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@ -141,61 +141,54 @@ static void ExportRowShrink(WebPRescaler* const wrk) {
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, temp3, temp4, temp5, temp6, temp7, loop_end;
const int temp2 = (int)wrk->fxy_scale;
const int temp8 = x_out_max << 2;
assert(!WebPRescalerOutputDone(wrk));
assert(wrk->y_accum <= 0);
assert(!wrk->y_expand);
if (wrk->fxy_scale != 0) {
const rescaler_t* frow = wrk->frow;
const int yscale = wrk->fy_scale * (-wrk->y_accum);
int temp0, temp1, temp3, temp4, temp5, temp6, temp7, loop_end;
const int temp2 = (int)(wrk->fxy_scale);
const int temp8 = x_out_max << 2;
assert(wrk->fxy_scale != 0);
__asm__ volatile(
"addiu %[temp6], $zero, -256 \n\t"
"addiu %[temp7], $zero, 255 \n\t"
"li %[temp3], 0x10000 \n\t"
"li %[temp4], 0x8000 \n\t"
"addu %[loop_end], %[frow], %[temp8] \n\t"
"1: \n\t"
"lw %[temp0], 0(%[frow]) \n\t"
"mult %[temp3], %[temp4] \n\t"
"addiu %[frow], %[frow], 4 \n\t"
"sll %[temp0], %[temp0], 2 \n\t"
"madd %[temp0], %[yscale] \n\t"
"mfhi %[temp1] \n\t"
"lw %[temp0], 0(%[irow]) \n\t"
"addiu %[dst], %[dst], 1 \n\t"
"addiu %[irow], %[irow], 4 \n\t"
"subu %[temp0], %[temp0], %[temp1] \n\t"
"mult %[temp3], %[temp4] \n\t"
"sll %[temp0], %[temp0], 2 \n\t"
"madd %[temp0], %[temp2] \n\t"
"mfhi %[temp5] \n\t"
"sw %[temp1], -4(%[irow]) \n\t"
"and %[temp0], %[temp5], %[temp6] \n\t"
"slti %[temp1], %[temp5], 0 \n\t"
"beqz %[temp0], 2f \n\t"
"xor %[temp5], %[temp5], %[temp5] \n\t"
"movz %[temp5], %[temp7], %[temp1] \n\t"
"2: \n\t"
"sb %[temp5], -1(%[dst]) \n\t"
"bne %[frow], %[loop_end], 1b \n\t"
__asm__ volatile(
"addiu %[temp6], $zero, -256 \n\t"
"addiu %[temp7], $zero, 255 \n\t"
"li %[temp3], 0x10000 \n\t"
"li %[temp4], 0x8000 \n\t"
"addu %[loop_end], %[frow], %[temp8] \n\t"
"1: \n\t"
"lw %[temp0], 0(%[frow]) \n\t"
"mult %[temp3], %[temp4] \n\t"
"addiu %[frow], %[frow], 4 \n\t"
"sll %[temp0], %[temp0], 2 \n\t"
"madd %[temp0], %[yscale] \n\t"
"mfhi %[temp1] \n\t"
"lw %[temp0], 0(%[irow]) \n\t"
"addiu %[dst], %[dst], 1 \n\t"
"addiu %[irow], %[irow], 4 \n\t"
"subu %[temp0], %[temp0], %[temp1] \n\t"
"mult %[temp3], %[temp4] \n\t"
"sll %[temp0], %[temp0], 2 \n\t"
"madd %[temp0], %[temp2] \n\t"
"mfhi %[temp5] \n\t"
"sw %[temp1], -4(%[irow]) \n\t"
"and %[temp0], %[temp5], %[temp6] \n\t"
"slti %[temp1], %[temp5], 0 \n\t"
"beqz %[temp0], 2f \n\t"
"xor %[temp5], %[temp5], %[temp5] \n\t"
"movz %[temp5], %[temp7], %[temp1] \n\t"
"2: \n\t"
"sb %[temp5], -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), [loop_end]"=&r"(loop_end)
: [temp2]"r"(temp2), [yscale]"r"(yscale), [temp8]"r"(temp8)
: "memory", "hi", "lo"
);
} else { // very special case for src = dst = 1x1
int x_out;
for (x_out = 0; x_out < x_out_max; ++x_out) {
dst[x_out] = irow[x_out];
irow[x_out] = 0;
}
}
: [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), [loop_end]"=&r"(loop_end)
: [temp2]"r"(temp2), [yscale]"r"(yscale), [temp8]"r"(temp8)
: "memory", "hi", "lo"
);
}
// no ExportRowExpand yet.