ref: a3ec6c7fb3a25c8058b420639f85eea02c354e97
dir: /vpx_dsp/mips/convolve2_vert_dspr2.c/
/*
* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <assert.h>
#include <stdio.h>
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/mips/convolve_common_dspr2.h"
#include "vpx_dsp/vpx_convolve.h"
#include "vpx_dsp/vpx_dsp_common.h"
#include "vpx_ports/mem.h"
#if HAVE_DSPR2
static void convolve_bi_vert_4_dspr2(const uint8_t *src, int32_t src_stride,
uint8_t *dst, int32_t dst_stride,
const int16_t *filter_y, int32_t w,
int32_t h) {
int32_t x, y;
const uint8_t *src_ptr;
uint8_t *dst_ptr;
uint8_t *cm = vpx_ff_cropTbl;
uint32_t vector4a = 64;
uint32_t load1, load2;
uint32_t p1, p2;
uint32_t scratch1;
uint32_t store1, store2;
int32_t Temp1, Temp2;
const int16_t *filter = &filter_y[3];
uint32_t filter45;
filter45 = ((const int32_t *)filter)[0];
for (y = h; y--;) {
/* prefetch data to cache memory */
prefetch_store(dst + dst_stride);
for (x = 0; x < w; x += 4) {
src_ptr = src + x;
dst_ptr = dst + x;
__asm__ __volatile__(
"ulw %[load1], 0(%[src_ptr]) \n\t"
"add %[src_ptr], %[src_ptr], %[src_stride] \n\t"
"ulw %[load2], 0(%[src_ptr]) \n\t"
"mtlo %[vector4a], $ac0 \n\t"
"mtlo %[vector4a], $ac1 \n\t"
"mtlo %[vector4a], $ac2 \n\t"
"mtlo %[vector4a], $ac3 \n\t"
"mthi $zero, $ac0 \n\t"
"mthi $zero, $ac1 \n\t"
"mthi $zero, $ac2 \n\t"
"mthi $zero, $ac3 \n\t"
"preceu.ph.qbr %[scratch1], %[load1] \n\t"
"preceu.ph.qbr %[p1], %[load2] \n\t"
"precrq.ph.w %[p2], %[p1], %[scratch1] \n\t" /* pixel 2 */
"append %[p1], %[scratch1], 16 \n\t" /* pixel 1 */
"dpa.w.ph $ac0, %[p1], %[filter45] \n\t"
"dpa.w.ph $ac1, %[p2], %[filter45] \n\t"
"preceu.ph.qbl %[scratch1], %[load1] \n\t"
"preceu.ph.qbl %[p1], %[load2] \n\t"
"precrq.ph.w %[p2], %[p1], %[scratch1] \n\t" /* pixel 2 */
"append %[p1], %[scratch1], 16 \n\t" /* pixel 1 */
"dpa.w.ph $ac2, %[p1], %[filter45] \n\t"
"dpa.w.ph $ac3, %[p2], %[filter45] \n\t"
"extp %[Temp1], $ac0, 31 \n\t"
"extp %[Temp2], $ac1, 31 \n\t"
"lbux %[store1], %[Temp1](%[cm]) \n\t"
"extp %[Temp1], $ac2, 31 \n\t"
"lbux %[store2], %[Temp2](%[cm]) \n\t"
"extp %[Temp2], $ac3, 31 \n\t"
"sb %[store1], 0(%[dst_ptr]) \n\t"
"sb %[store2], 1(%[dst_ptr]) \n\t"
"lbux %[store1], %[Temp1](%[cm]) \n\t"
"lbux %[store2], %[Temp2](%[cm]) \n\t"
"sb %[store1], 2(%[dst_ptr]) \n\t"
"sb %[store2], 3(%[dst_ptr]) \n\t"
: [load1] "=&r"(load1), [load2] "=&r"(load2), [p1] "=&r"(p1),
[p2] "=&r"(p2), [scratch1] "=&r"(scratch1), [Temp1] "=&r"(Temp1),
[Temp2] "=&r"(Temp2), [store1] "=&r"(store1),
[store2] "=&r"(store2), [src_ptr] "+r"(src_ptr)
: [filter45] "r"(filter45), [vector4a] "r"(vector4a),
[src_stride] "r"(src_stride), [cm] "r"(cm), [dst_ptr] "r"(dst_ptr));
}
/* Next row... */
src += src_stride;
dst += dst_stride;
}
}
static void convolve_bi_vert_64_dspr2(const uint8_t *src, int32_t src_stride,
uint8_t *dst, int32_t dst_stride,
const int16_t *filter_y, int32_t h) {
int32_t x, y;
const uint8_t *src_ptr;
uint8_t *dst_ptr;
uint8_t *cm = vpx_ff_cropTbl;
uint32_t vector4a = 64;
uint32_t load1, load2;
uint32_t p1, p2;
uint32_t scratch1;
uint32_t store1, store2;
int32_t Temp1, Temp2;
const int16_t *filter = &filter_y[3];
uint32_t filter45;
filter45 = ((const int32_t *)filter)[0];
for (y = h; y--;) {
/* prefetch data to cache memory */
prefetch_store(dst + dst_stride);
for (x = 0; x < 64; x += 4) {
src_ptr = src + x;
dst_ptr = dst + x;
__asm__ __volatile__(
"ulw %[load1], 0(%[src_ptr]) \n\t"
"add %[src_ptr], %[src_ptr], %[src_stride] \n\t"
"ulw %[load2], 0(%[src_ptr]) \n\t"
"mtlo %[vector4a], $ac0 \n\t"
"mtlo %[vector4a], $ac1 \n\t"
"mtlo %[vector4a], $ac2 \n\t"
"mtlo %[vector4a], $ac3 \n\t"
"mthi $zero, $ac0 \n\t"
"mthi $zero, $ac1 \n\t"
"mthi $zero, $ac2 \n\t"
"mthi $zero, $ac3 \n\t"
"preceu.ph.qbr %[scratch1], %[load1] \n\t"
"preceu.ph.qbr %[p1], %[load2] \n\t"
"precrq.ph.w %[p2], %[p1], %[scratch1] \n\t" /* pixel 2 */
"append %[p1], %[scratch1], 16 \n\t" /* pixel 1 */
"dpa.w.ph $ac0, %[p1], %[filter45] \n\t"
"dpa.w.ph $ac1, %[p2], %[filter45] \n\t"
"preceu.ph.qbl %[scratch1], %[load1] \n\t"
"preceu.ph.qbl %[p1], %[load2] \n\t"
"precrq.ph.w %[p2], %[p1], %[scratch1] \n\t" /* pixel 2 */
"append %[p1], %[scratch1], 16 \n\t" /* pixel 1 */
"dpa.w.ph $ac2, %[p1], %[filter45] \n\t"
"dpa.w.ph $ac3, %[p2], %[filter45] \n\t"
"extp %[Temp1], $ac0, 31 \n\t"
"extp %[Temp2], $ac1, 31 \n\t"
"lbux %[store1], %[Temp1](%[cm]) \n\t"
"extp %[Temp1], $ac2, 31 \n\t"
"lbux %[store2], %[Temp2](%[cm]) \n\t"
"extp %[Temp2], $ac3, 31 \n\t"
"sb %[store1], 0(%[dst_ptr]) \n\t"
"sb %[store2], 1(%[dst_ptr]) \n\t"
"lbux %[store1], %[Temp1](%[cm]) \n\t"
"lbux %[store2], %[Temp2](%[cm]) \n\t"
"sb %[store1], 2(%[dst_ptr]) \n\t"
"sb %[store2], 3(%[dst_ptr]) \n\t"
: [load1] "=&r"(load1), [load2] "=&r"(load2), [p1] "=&r"(p1),
[p2] "=&r"(p2), [scratch1] "=&r"(scratch1), [Temp1] "=&r"(Temp1),
[Temp2] "=&r"(Temp2), [store1] "=&r"(store1),
[store2] "=&r"(store2), [src_ptr] "+r"(src_ptr)
: [filter45] "r"(filter45), [vector4a] "r"(vector4a),
[src_stride] "r"(src_stride), [cm] "r"(cm), [dst_ptr] "r"(dst_ptr));
}
/* Next row... */
src += src_stride;
dst += dst_stride;
}
}
void vpx_convolve2_vert_dspr2(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4,
int32_t x_step_q4, int y0_q4, int y_step_q4,
int w, int h) {
const int16_t *const filter_y = filter[y0_q4];
uint32_t pos = 38;
assert(y_step_q4 == 16);
/* bit positon for extract from acc */
__asm__ __volatile__("wrdsp %[pos], 1 \n\t"
:
: [pos] "r"(pos));
prefetch_store(dst);
switch (w) {
case 4:
case 8:
case 16:
case 32:
convolve_bi_vert_4_dspr2(src, src_stride, dst, dst_stride, filter_y, w,
h);
break;
case 64:
prefetch_store(dst + 32);
convolve_bi_vert_64_dspr2(src, src_stride, dst, dst_stride, filter_y, h);
break;
default:
vpx_convolve8_vert_c(src, src_stride, dst, dst_stride, filter, x0_q4,
x_step_q4, y0_q4, y_step_q4, w, h);
break;
}
}
#endif