ref: 624f8105f5ae7e0bc82bdc7e10a4253295134a8b
dir: /vpx_dsp/mips/vpx_convolve8_mmi.c/
/*
* Copyright (c) 2018 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 <string.h>
#include "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx/vpx_integer.h"
#include "vpx_dsp/vpx_dsp_common.h"
#include "vpx_dsp/vpx_filter.h"
#include "vpx_ports/asmdefs_mmi.h"
#include "vpx_ports/mem.h"
#define GET_DATA_H_MMI \
"pmaddhw %[ftmp4], %[ftmp4], %[filter1] \n\t" \
"pmaddhw %[ftmp5], %[ftmp5], %[filter2] \n\t" \
"paddw %[ftmp4], %[ftmp4], %[ftmp5] \n\t" \
"punpckhwd %[ftmp5], %[ftmp4], %[ftmp0] \n\t" \
"paddw %[ftmp4], %[ftmp4], %[ftmp5] \n\t" \
"pmaddhw %[ftmp6], %[ftmp6], %[filter1] \n\t" \
"pmaddhw %[ftmp7], %[ftmp7], %[filter2] \n\t" \
"paddw %[ftmp6], %[ftmp6], %[ftmp7] \n\t" \
"punpckhwd %[ftmp7], %[ftmp6], %[ftmp0] \n\t" \
"paddw %[ftmp6], %[ftmp6], %[ftmp7] \n\t" \
"punpcklwd %[srcl], %[ftmp4], %[ftmp6] \n\t" \
"pmaddhw %[ftmp8], %[ftmp8], %[filter1] \n\t" \
"pmaddhw %[ftmp9], %[ftmp9], %[filter2] \n\t" \
"paddw %[ftmp8], %[ftmp8], %[ftmp9] \n\t" \
"punpckhwd %[ftmp9], %[ftmp8], %[ftmp0] \n\t" \
"paddw %[ftmp8], %[ftmp8], %[ftmp9] \n\t" \
"pmaddhw %[ftmp10], %[ftmp10], %[filter1] \n\t" \
"pmaddhw %[ftmp11], %[ftmp11], %[filter2] \n\t" \
"paddw %[ftmp10], %[ftmp10], %[ftmp11] \n\t" \
"punpckhwd %[ftmp11], %[ftmp10], %[ftmp0] \n\t" \
"paddw %[ftmp10], %[ftmp10], %[ftmp11] \n\t" \
"punpcklwd %[srch], %[ftmp8], %[ftmp10] \n\t"
#define GET_DATA_V_MMI \
"punpcklhw %[srcl], %[ftmp4], %[ftmp5] \n\t" \
"pmaddhw %[srcl], %[srcl], %[filter10] \n\t" \
"punpcklhw %[ftmp12], %[ftmp6], %[ftmp7] \n\t" \
"pmaddhw %[ftmp12], %[ftmp12], %[filter32] \n\t" \
"paddw %[srcl], %[srcl], %[ftmp12] \n\t" \
"punpcklhw %[ftmp12], %[ftmp8], %[ftmp9] \n\t" \
"pmaddhw %[ftmp12], %[ftmp12], %[filter54] \n\t" \
"paddw %[srcl], %[srcl], %[ftmp12] \n\t" \
"punpcklhw %[ftmp12], %[ftmp10], %[ftmp11] \n\t" \
"pmaddhw %[ftmp12], %[ftmp12], %[filter76] \n\t" \
"paddw %[srcl], %[srcl], %[ftmp12] \n\t" \
"punpckhhw %[srch], %[ftmp4], %[ftmp5] \n\t" \
"pmaddhw %[srch], %[srch], %[filter10] \n\t" \
"punpckhhw %[ftmp12], %[ftmp6], %[ftmp7] \n\t" \
"pmaddhw %[ftmp12], %[ftmp12], %[filter32] \n\t" \
"paddw %[srch], %[srch], %[ftmp12] \n\t" \
"punpckhhw %[ftmp12], %[ftmp8], %[ftmp9] \n\t" \
"pmaddhw %[ftmp12], %[ftmp12], %[filter54] \n\t" \
"paddw %[srch], %[srch], %[ftmp12] \n\t" \
"punpckhhw %[ftmp12], %[ftmp10], %[ftmp11] \n\t" \
"pmaddhw %[ftmp12], %[ftmp12], %[filter76] \n\t" \
"paddw %[srch], %[srch], %[ftmp12] \n\t"
/* clang-format off */
#define ROUND_POWER_OF_TWO_MMI \
/* Add para[0] */ \
"lw %[tmp0], 0x00(%[para]) \n\t" \
MMI_MTC1(%[tmp0], %[ftmp6]) \
"punpcklwd %[ftmp6], %[ftmp6], %[ftmp6] \n\t" \
"paddw %[srcl], %[srcl], %[ftmp6] \n\t" \
"paddw %[srch], %[srch], %[ftmp6] \n\t" \
/* Arithmetic right shift para[1] bits */ \
"lw %[tmp0], 0x04(%[para]) \n\t" \
MMI_MTC1(%[tmp0], %[ftmp5]) \
"psraw %[srcl], %[srcl], %[ftmp5] \n\t" \
"psraw %[srch], %[srch], %[ftmp5] \n\t"
/* clang-format on */
#define CLIP_PIXEL_MMI \
/* Staturated operation */ \
"packsswh %[srcl], %[srcl], %[srch] \n\t" \
"packushb %[ftmp12], %[srcl], %[ftmp0] \n\t"
static void convolve_horiz_mmi(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4,
int x_step_q4, int32_t w, int32_t h) {
const int16_t *filter_x = filter[x0_q4];
double ftmp[14];
uint32_t tmp[2];
uint32_t para[5];
para[0] = (1 << ((FILTER_BITS)-1));
para[1] = FILTER_BITS;
src -= SUBPEL_TAPS / 2 - 1;
src_stride -= w;
dst_stride -= w;
(void)x_step_q4;
/* clang-format off */
__asm__ volatile(
"move %[tmp1], %[width] \n\t"
"xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"gsldlc1 %[filter1], 0x03(%[filter]) \n\t"
"gsldrc1 %[filter1], 0x00(%[filter]) \n\t"
"gsldlc1 %[filter2], 0x0b(%[filter]) \n\t"
"gsldrc1 %[filter2], 0x08(%[filter]) \n\t"
"1: \n\t"
/* Get 8 data per row */
"gsldlc1 %[ftmp5], 0x07(%[src]) \n\t"
"gsldrc1 %[ftmp5], 0x00(%[src]) \n\t"
"gsldlc1 %[ftmp7], 0x08(%[src]) \n\t"
"gsldrc1 %[ftmp7], 0x01(%[src]) \n\t"
"gsldlc1 %[ftmp9], 0x09(%[src]) \n\t"
"gsldrc1 %[ftmp9], 0x02(%[src]) \n\t"
"gsldlc1 %[ftmp11], 0x0A(%[src]) \n\t"
"gsldrc1 %[ftmp11], 0x03(%[src]) \n\t"
"punpcklbh %[ftmp4], %[ftmp5], %[ftmp0] \n\t"
"punpckhbh %[ftmp5], %[ftmp5], %[ftmp0] \n\t"
"punpcklbh %[ftmp6], %[ftmp7], %[ftmp0] \n\t"
"punpckhbh %[ftmp7], %[ftmp7], %[ftmp0] \n\t"
"punpcklbh %[ftmp8], %[ftmp9], %[ftmp0] \n\t"
"punpckhbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t"
"punpcklbh %[ftmp10], %[ftmp11], %[ftmp0] \n\t"
"punpckhbh %[ftmp11], %[ftmp11], %[ftmp0] \n\t"
MMI_ADDIU(%[width], %[width], -0x04)
/* Get raw data */
GET_DATA_H_MMI
ROUND_POWER_OF_TWO_MMI
CLIP_PIXEL_MMI
"swc1 %[ftmp12], 0x00(%[dst]) \n\t"
MMI_ADDIU(%[dst], %[dst], 0x04)
MMI_ADDIU(%[src], %[src], 0x04)
/* Loop count */
"bnez %[width], 1b \n\t"
"move %[width], %[tmp1] \n\t"
MMI_ADDU(%[src], %[src], %[src_stride])
MMI_ADDU(%[dst], %[dst], %[dst_stride])
MMI_ADDIU(%[height], %[height], -0x01)
"bnez %[height], 1b \n\t"
: [srcl]"=&f"(ftmp[0]), [srch]"=&f"(ftmp[1]),
[filter1]"=&f"(ftmp[2]), [filter2]"=&f"(ftmp[3]),
[ftmp0]"=&f"(ftmp[4]), [ftmp4]"=&f"(ftmp[5]),
[ftmp5]"=&f"(ftmp[6]), [ftmp6]"=&f"(ftmp[7]),
[ftmp7]"=&f"(ftmp[8]), [ftmp8]"=&f"(ftmp[9]),
[ftmp9]"=&f"(ftmp[10]), [ftmp10]"=&f"(ftmp[11]),
[ftmp11]"=&f"(ftmp[12]), [ftmp12]"=&f"(ftmp[13]),
[tmp0]"=&r"(tmp[0]), [tmp1]"=&r"(tmp[1]),
[src]"+&r"(src), [width]"+&r"(w),
[dst]"+&r"(dst), [height]"+&r"(h)
: [filter]"r"(filter_x), [para]"r"(para),
[src_stride]"r"((mips_reg)src_stride),
[dst_stride]"r"((mips_reg)dst_stride)
: "memory"
);
/* clang-format on */
}
static void convolve_vert_mmi(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int y0_q4,
int y_step_q4, int32_t w, int32_t h) {
const int16_t *filter_y = filter[y0_q4];
double ftmp[16];
uint32_t tmp[1];
uint32_t para[2];
ptrdiff_t addr = src_stride;
para[0] = (1 << ((FILTER_BITS)-1));
para[1] = FILTER_BITS;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
src_stride -= w;
dst_stride -= w;
(void)y_step_q4;
__asm__ volatile(
"xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"gsldlc1 %[ftmp4], 0x03(%[filter]) \n\t"
"gsldrc1 %[ftmp4], 0x00(%[filter]) \n\t"
"gsldlc1 %[ftmp5], 0x0b(%[filter]) \n\t"
"gsldrc1 %[ftmp5], 0x08(%[filter]) \n\t"
"punpcklwd %[filter10], %[ftmp4], %[ftmp4] \n\t"
"punpckhwd %[filter32], %[ftmp4], %[ftmp4] \n\t"
"punpcklwd %[filter54], %[ftmp5], %[ftmp5] \n\t"
"punpckhwd %[filter76], %[ftmp5], %[ftmp5] \n\t"
"1: \n\t"
/* Get 8 data per column */
"gsldlc1 %[ftmp4], 0x07(%[src]) \n\t"
"gsldrc1 %[ftmp4], 0x00(%[src]) \n\t"
MMI_ADDU(%[tmp0], %[src], %[addr])
"gsldlc1 %[ftmp5], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp5], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp6], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp6], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp7], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp7], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp8], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp8], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp9], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp9], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp10], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp10], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp11], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp11], 0x00(%[tmp0]) \n\t"
"punpcklbh %[ftmp4], %[ftmp4], %[ftmp0] \n\t"
"punpcklbh %[ftmp5], %[ftmp5], %[ftmp0] \n\t"
"punpcklbh %[ftmp6], %[ftmp6], %[ftmp0] \n\t"
"punpcklbh %[ftmp7], %[ftmp7], %[ftmp0] \n\t"
"punpcklbh %[ftmp8], %[ftmp8], %[ftmp0] \n\t"
"punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t"
"punpcklbh %[ftmp10], %[ftmp10], %[ftmp0] \n\t"
"punpcklbh %[ftmp11], %[ftmp11], %[ftmp0] \n\t"
MMI_ADDIU(%[width], %[width], -0x04)
/* Get raw data */
GET_DATA_V_MMI
ROUND_POWER_OF_TWO_MMI
CLIP_PIXEL_MMI
"swc1 %[ftmp12], 0x00(%[dst]) \n\t"
MMI_ADDIU(%[dst], %[dst], 0x04)
MMI_ADDIU(%[src], %[src], 0x04)
/* Loop count */
"bnez %[width], 1b \n\t"
MMI_SUBU(%[width], %[addr], %[src_stride])
MMI_ADDU(%[src], %[src], %[src_stride])
MMI_ADDU(%[dst], %[dst], %[dst_stride])
MMI_ADDIU(%[height], %[height], -0x01)
"bnez %[height], 1b \n\t"
: [srcl]"=&f"(ftmp[0]), [srch]"=&f"(ftmp[1]),
[filter10]"=&f"(ftmp[2]), [filter32]"=&f"(ftmp[3]),
[filter54]"=&f"(ftmp[4]), [filter76]"=&f"(ftmp[5]),
[ftmp0]"=&f"(ftmp[6]), [ftmp4]"=&f"(ftmp[7]),
[ftmp5]"=&f"(ftmp[8]), [ftmp6]"=&f"(ftmp[9]),
[ftmp7]"=&f"(ftmp[10]), [ftmp8]"=&f"(ftmp[11]),
[ftmp9]"=&f"(ftmp[12]), [ftmp10]"=&f"(ftmp[13]),
[ftmp11]"=&f"(ftmp[14]), [ftmp12]"=&f"(ftmp[15]),
[src]"+&r"(src), [dst]"+&r"(dst),
[width]"+&r"(w), [height]"+&r"(h),
[tmp0]"=&r"(tmp[0])
: [filter]"r"(filter_y), [para]"r"(para),
[src_stride]"r"((mips_reg)src_stride),
[dst_stride]"r"((mips_reg)dst_stride),
[addr]"r"((mips_reg)addr)
: "memory"
);
}
static void convolve_avg_horiz_mmi(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4,
int x_step_q4, int32_t w, int32_t h) {
const int16_t *filter_x = filter[x0_q4];
double ftmp[14];
uint32_t tmp[2];
uint32_t para[2];
para[0] = (1 << ((FILTER_BITS)-1));
para[1] = FILTER_BITS;
src -= SUBPEL_TAPS / 2 - 1;
src_stride -= w;
dst_stride -= w;
(void)x_step_q4;
__asm__ volatile(
"move %[tmp1], %[width] \n\t"
"xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"gsldlc1 %[filter1], 0x03(%[filter]) \n\t"
"gsldrc1 %[filter1], 0x00(%[filter]) \n\t"
"gsldlc1 %[filter2], 0x0b(%[filter]) \n\t"
"gsldrc1 %[filter2], 0x08(%[filter]) \n\t"
"1: \n\t"
/* Get 8 data per row */
"gsldlc1 %[ftmp5], 0x07(%[src]) \n\t"
"gsldrc1 %[ftmp5], 0x00(%[src]) \n\t"
"gsldlc1 %[ftmp7], 0x08(%[src]) \n\t"
"gsldrc1 %[ftmp7], 0x01(%[src]) \n\t"
"gsldlc1 %[ftmp9], 0x09(%[src]) \n\t"
"gsldrc1 %[ftmp9], 0x02(%[src]) \n\t"
"gsldlc1 %[ftmp11], 0x0A(%[src]) \n\t"
"gsldrc1 %[ftmp11], 0x03(%[src]) \n\t"
"punpcklbh %[ftmp4], %[ftmp5], %[ftmp0] \n\t"
"punpckhbh %[ftmp5], %[ftmp5], %[ftmp0] \n\t"
"punpcklbh %[ftmp6], %[ftmp7], %[ftmp0] \n\t"
"punpckhbh %[ftmp7], %[ftmp7], %[ftmp0] \n\t"
"punpcklbh %[ftmp8], %[ftmp9], %[ftmp0] \n\t"
"punpckhbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t"
"punpcklbh %[ftmp10], %[ftmp11], %[ftmp0] \n\t"
"punpckhbh %[ftmp11], %[ftmp11], %[ftmp0] \n\t"
MMI_ADDIU(%[width], %[width], -0x04)
/* Get raw data */
GET_DATA_H_MMI
ROUND_POWER_OF_TWO_MMI
CLIP_PIXEL_MMI
"punpcklbh %[ftmp12], %[ftmp12], %[ftmp0] \n\t"
"gsldlc1 %[ftmp4], 0x07(%[dst]) \n\t"
"gsldrc1 %[ftmp4], 0x00(%[dst]) \n\t"
"punpcklbh %[ftmp4], %[ftmp4], %[ftmp0] \n\t"
"paddh %[ftmp12], %[ftmp12], %[ftmp4] \n\t"
"li %[tmp0], 0x10001 \n\t"
MMI_MTC1(%[tmp0], %[ftmp5])
"punpcklhw %[ftmp5], %[ftmp5], %[ftmp5] \n\t"
"paddh %[ftmp12], %[ftmp12], %[ftmp5] \n\t"
"psrah %[ftmp12], %[ftmp12], %[ftmp5] \n\t"
"packushb %[ftmp12], %[ftmp12], %[ftmp0] \n\t"
"swc1 %[ftmp12], 0x00(%[dst]) \n\t"
MMI_ADDIU(%[dst], %[dst], 0x04)
MMI_ADDIU(%[src], %[src], 0x04)
/* Loop count */
"bnez %[width], 1b \n\t"
"move %[width], %[tmp1] \n\t"
MMI_ADDU(%[src], %[src], %[src_stride])
MMI_ADDU(%[dst], %[dst], %[dst_stride])
MMI_ADDIU(%[height], %[height], -0x01)
"bnez %[height], 1b \n\t"
: [srcl]"=&f"(ftmp[0]), [srch]"=&f"(ftmp[1]),
[filter1]"=&f"(ftmp[2]), [filter2]"=&f"(ftmp[3]),
[ftmp0]"=&f"(ftmp[4]), [ftmp4]"=&f"(ftmp[5]),
[ftmp5]"=&f"(ftmp[6]), [ftmp6]"=&f"(ftmp[7]),
[ftmp7]"=&f"(ftmp[8]), [ftmp8]"=&f"(ftmp[9]),
[ftmp9]"=&f"(ftmp[10]), [ftmp10]"=&f"(ftmp[11]),
[ftmp11]"=&f"(ftmp[12]), [ftmp12]"=&f"(ftmp[13]),
[tmp0]"=&r"(tmp[0]), [tmp1]"=&r"(tmp[1]),
[src]"+&r"(src), [width]"+&r"(w),
[dst]"+&r"(dst), [height]"+&r"(h)
: [filter]"r"(filter_x), [para]"r"(para),
[src_stride]"r"((mips_reg)src_stride),
[dst_stride]"r"((mips_reg)dst_stride)
: "memory"
);
}
static void convolve_avg_vert_mmi(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int y0_q4,
int y_step_q4, int32_t w, int32_t h) {
const int16_t *filter_y = filter[y0_q4];
double ftmp[16];
uint32_t tmp[1];
uint32_t para[2];
ptrdiff_t addr = src_stride;
para[0] = (1 << ((FILTER_BITS)-1));
para[1] = FILTER_BITS;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
src_stride -= w;
dst_stride -= w;
(void)y_step_q4;
__asm__ volatile(
"xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"gsldlc1 %[ftmp4], 0x03(%[filter]) \n\t"
"gsldrc1 %[ftmp4], 0x00(%[filter]) \n\t"
"gsldlc1 %[ftmp5], 0x0b(%[filter]) \n\t"
"gsldrc1 %[ftmp5], 0x08(%[filter]) \n\t"
"punpcklwd %[filter10], %[ftmp4], %[ftmp4] \n\t"
"punpckhwd %[filter32], %[ftmp4], %[ftmp4] \n\t"
"punpcklwd %[filter54], %[ftmp5], %[ftmp5] \n\t"
"punpckhwd %[filter76], %[ftmp5], %[ftmp5] \n\t"
"1: \n\t"
/* Get 8 data per column */
"gsldlc1 %[ftmp4], 0x07(%[src]) \n\t"
"gsldrc1 %[ftmp4], 0x00(%[src]) \n\t"
MMI_ADDU(%[tmp0], %[src], %[addr])
"gsldlc1 %[ftmp5], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp5], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp6], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp6], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp7], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp7], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp8], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp8], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp9], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp9], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp10], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp10], 0x00(%[tmp0]) \n\t"
MMI_ADDU(%[tmp0], %[tmp0], %[addr])
"gsldlc1 %[ftmp11], 0x07(%[tmp0]) \n\t"
"gsldrc1 %[ftmp11], 0x00(%[tmp0]) \n\t"
"punpcklbh %[ftmp4], %[ftmp4], %[ftmp0] \n\t"
"punpcklbh %[ftmp5], %[ftmp5], %[ftmp0] \n\t"
"punpcklbh %[ftmp6], %[ftmp6], %[ftmp0] \n\t"
"punpcklbh %[ftmp7], %[ftmp7], %[ftmp0] \n\t"
"punpcklbh %[ftmp8], %[ftmp8], %[ftmp0] \n\t"
"punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t"
"punpcklbh %[ftmp10], %[ftmp10], %[ftmp0] \n\t"
"punpcklbh %[ftmp11], %[ftmp11], %[ftmp0] \n\t"
MMI_ADDIU(%[width], %[width], -0x04)
/* Get raw data */
GET_DATA_V_MMI
ROUND_POWER_OF_TWO_MMI
CLIP_PIXEL_MMI
"punpcklbh %[ftmp12], %[ftmp12], %[ftmp0] \n\t"
"gsldlc1 %[ftmp4], 0x07(%[dst]) \n\t"
"gsldrc1 %[ftmp4], 0x00(%[dst]) \n\t"
"punpcklbh %[ftmp4], %[ftmp4], %[ftmp0] \n\t"
"paddh %[ftmp12], %[ftmp12], %[ftmp4] \n\t"
"li %[tmp0], 0x10001 \n\t"
MMI_MTC1(%[tmp0], %[ftmp5])
"punpcklhw %[ftmp5], %[ftmp5], %[ftmp5] \n\t"
"paddh %[ftmp12], %[ftmp12], %[ftmp5] \n\t"
"psrah %[ftmp12], %[ftmp12], %[ftmp5] \n\t"
"packushb %[ftmp12], %[ftmp12], %[ftmp0] \n\t"
"swc1 %[ftmp12], 0x00(%[dst]) \n\t"
MMI_ADDIU(%[dst], %[dst], 0x04)
MMI_ADDIU(%[src], %[src], 0x04)
/* Loop count */
"bnez %[width], 1b \n\t"
MMI_SUBU(%[width], %[addr], %[src_stride])
MMI_ADDU(%[src], %[src], %[src_stride])
MMI_ADDU(%[dst], %[dst], %[dst_stride])
MMI_ADDIU(%[height], %[height], -0x01)
"bnez %[height], 1b \n\t"
: [srcl]"=&f"(ftmp[0]), [srch]"=&f"(ftmp[1]),
[filter10]"=&f"(ftmp[2]), [filter32]"=&f"(ftmp[3]),
[filter54]"=&f"(ftmp[4]), [filter76]"=&f"(ftmp[5]),
[ftmp0]"=&f"(ftmp[6]), [ftmp4]"=&f"(ftmp[7]),
[ftmp5]"=&f"(ftmp[8]), [ftmp6]"=&f"(ftmp[9]),
[ftmp7]"=&f"(ftmp[10]), [ftmp8]"=&f"(ftmp[11]),
[ftmp9]"=&f"(ftmp[12]), [ftmp10]"=&f"(ftmp[13]),
[ftmp11]"=&f"(ftmp[14]), [ftmp12]"=&f"(ftmp[15]),
[src]"+&r"(src), [dst]"+&r"(dst),
[width]"+&r"(w), [height]"+&r"(h),
[tmp0]"=&r"(tmp[0])
: [filter]"r"(filter_y), [para]"r"(para),
[src_stride]"r"((mips_reg)src_stride),
[dst_stride]"r"((mips_reg)dst_stride),
[addr]"r"((mips_reg)addr)
: "memory"
);
}
void vpx_convolve_avg_mmi(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4, int x_step_q4,
int y0_q4, int y_step_q4, int w, int h) {
int x, y;
(void)filter;
(void)x0_q4;
(void)x_step_q4;
(void)y0_q4;
(void)y_step_q4;
if (w & 0x03) {
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) dst[x] = ROUND_POWER_OF_TWO(dst[x] + src[x], 1);
src += src_stride;
dst += dst_stride;
}
} else {
double ftmp[4];
uint32_t tmp[2];
src_stride -= w;
dst_stride -= w;
__asm__ volatile(
"move %[tmp1], %[width] \n\t"
"xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t"
"li %[tmp0], 0x10001 \n\t"
MMI_MTC1(%[tmp0], %[ftmp3])
"punpcklhw %[ftmp3], %[ftmp3], %[ftmp3] \n\t"
"1: \n\t"
"gsldlc1 %[ftmp1], 0x07(%[src]) \n\t"
"gsldrc1 %[ftmp1], 0x00(%[src]) \n\t"
"gsldlc1 %[ftmp2], 0x07(%[dst]) \n\t"
"gsldrc1 %[ftmp2], 0x00(%[dst]) \n\t"
"punpcklbh %[ftmp1], %[ftmp1], %[ftmp0] \n\t"
"punpcklbh %[ftmp2], %[ftmp2], %[ftmp0] \n\t"
"paddh %[ftmp1], %[ftmp1], %[ftmp2] \n\t"
"paddh %[ftmp1], %[ftmp1], %[ftmp3] \n\t"
"psrah %[ftmp1], %[ftmp1], %[ftmp3] \n\t"
"packushb %[ftmp1], %[ftmp1], %[ftmp0] \n\t"
"swc1 %[ftmp1], 0x00(%[dst]) \n\t"
MMI_ADDIU(%[width], %[width], -0x04)
MMI_ADDIU(%[dst], %[dst], 0x04)
MMI_ADDIU(%[src], %[src], 0x04)
"bnez %[width], 1b \n\t"
"move %[width], %[tmp1] \n\t"
MMI_ADDU(%[dst], %[dst], %[dst_stride])
MMI_ADDU(%[src], %[src], %[src_stride])
MMI_ADDIU(%[height], %[height], -0x01)
"bnez %[height], 1b \n\t"
: [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]),
[ftmp2]"=&f"(ftmp[2]), [ftmp3]"=&f"(ftmp[3]),
[tmp0]"=&r"(tmp[0]), [tmp1]"=&r"(tmp[1]),
[src]"+&r"(src), [dst]"+&r"(dst),
[width]"+&r"(w), [height]"+&r"(h)
: [src_stride]"r"((mips_reg)src_stride),
[dst_stride]"r"((mips_reg)dst_stride)
: "memory"
);
}
}
static void convolve_horiz(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *x_filters, int x0_q4,
int x_step_q4, int w, int h) {
int x, y;
src -= SUBPEL_TAPS / 2 - 1;
for (y = 0; y < h; ++y) {
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS];
const int16_t *const x_filter = x_filters[x_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k) sum += src_x[k] * x_filter[k];
dst[x] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS));
x_q4 += x_step_q4;
}
src += src_stride;
dst += dst_stride;
}
}
static void convolve_vert(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *y_filters, int y0_q4,
int y_step_q4, int w, int h) {
int x, y;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
for (x = 0; x < w; ++x) {
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
const uint8_t *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k)
sum += src_y[k * src_stride] * y_filter[k];
dst[y * dst_stride] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS));
y_q4 += y_step_q4;
}
++src;
++dst;
}
}
static void convolve_avg_vert(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *y_filters, int y0_q4,
int y_step_q4, int w, int h) {
int x, y;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
for (x = 0; x < w; ++x) {
int y_q4 = y0_q4;
for (y = 0; y < h; ++y) {
const uint8_t *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
const int16_t *const y_filter = y_filters[y_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k)
sum += src_y[k * src_stride] * y_filter[k];
dst[y * dst_stride] = ROUND_POWER_OF_TWO(
dst[y * dst_stride] +
clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)),
1);
y_q4 += y_step_q4;
}
++src;
++dst;
}
}
static void convolve_avg_horiz(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *x_filters, int x0_q4,
int x_step_q4, int w, int h) {
int x, y;
src -= SUBPEL_TAPS / 2 - 1;
for (y = 0; y < h; ++y) {
int x_q4 = x0_q4;
for (x = 0; x < w; ++x) {
const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS];
const int16_t *const x_filter = x_filters[x_q4 & SUBPEL_MASK];
int k, sum = 0;
for (k = 0; k < SUBPEL_TAPS; ++k) sum += src_x[k] * x_filter[k];
dst[x] = ROUND_POWER_OF_TWO(
dst[x] + clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS)), 1);
x_q4 += x_step_q4;
}
src += src_stride;
dst += dst_stride;
}
}
void vpx_convolve8_mmi(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,
int32_t y_step_q4, int32_t w, int32_t h) {
// Note: Fixed size intermediate buffer, temp, places limits on parameters.
// 2d filtering proceeds in 2 steps:
// (1) Interpolate horizontally into an intermediate buffer, temp.
// (2) Interpolate temp vertically to derive the sub-pixel result.
// Deriving the maximum number of rows in the temp buffer (135):
// --Smallest scaling factor is x1/2 ==> y_step_q4 = 32 (Normative).
// --Largest block size is 64x64 pixels.
// --64 rows in the downscaled frame span a distance of (64 - 1) * 32 in the
// original frame (in 1/16th pixel units).
// --Must round-up because block may be located at sub-pixel position.
// --Require an additional SUBPEL_TAPS rows for the 8-tap filter tails.
// --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
// When calling in frame scaling function, the smallest scaling factor is x1/4
// ==> y_step_q4 = 64. Since w and h are at most 16, the temp buffer is still
// big enough.
uint8_t temp[64 * 135];
const int intermediate_height =
(((h - 1) * y_step_q4 + y0_q4) >> SUBPEL_BITS) + SUBPEL_TAPS;
assert(w <= 64);
assert(h <= 64);
assert(y_step_q4 <= 32 || (y_step_q4 <= 64 && h <= 32));
assert(x_step_q4 <= 64);
if (w & 0x03) {
convolve_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride, temp,
64, filter, x0_q4, x_step_q4, w, intermediate_height);
convolve_vert(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst, dst_stride,
filter, y0_q4, y_step_q4, w, h);
} else {
convolve_horiz_mmi(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride,
temp, 64, filter, x0_q4, x_step_q4, w,
intermediate_height);
convolve_vert_mmi(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst, dst_stride,
filter, y0_q4, y_step_q4, w, h);
}
}
void vpx_convolve8_horiz_mmi(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, int32_t y_step_q4,
int32_t w, int32_t h) {
(void)y0_q4;
(void)y_step_q4;
if (w & 0x03)
convolve_horiz(src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4,
w, h);
else
convolve_horiz_mmi(src, src_stride, dst, dst_stride, filter, x0_q4,
x_step_q4, w, h);
}
void vpx_convolve8_vert_mmi(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) {
(void)x0_q4;
(void)x_step_q4;
if (w & 0x03)
convolve_vert(src, src_stride, dst, dst_stride, filter, y0_q4, y_step_q4, w,
h);
else
convolve_vert_mmi(src, src_stride, dst, dst_stride, filter, y0_q4,
y_step_q4, w, h);
}
void vpx_convolve8_avg_horiz_mmi(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) {
(void)y0_q4;
(void)y_step_q4;
if (w & 0x03)
convolve_avg_horiz(src, src_stride, dst, dst_stride, filter, x0_q4,
x_step_q4, w, h);
else
convolve_avg_horiz_mmi(src, src_stride, dst, dst_stride, filter, x0_q4,
x_step_q4, w, h);
}
void vpx_convolve8_avg_vert_mmi(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) {
(void)x0_q4;
(void)x_step_q4;
if (w & 0x03)
convolve_avg_vert(src, src_stride, dst, dst_stride, filter, y0_q4,
y_step_q4, w, h);
else
convolve_avg_vert_mmi(src, src_stride, dst, dst_stride, filter, y0_q4,
y_step_q4, w, h);
}
void vpx_convolve8_avg_mmi(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, int32_t y_step_q4,
int32_t w, int32_t h) {
// Fixed size intermediate buffer places limits on parameters.
DECLARE_ALIGNED(16, uint8_t, temp[64 * 64]);
assert(w <= 64);
assert(h <= 64);
vpx_convolve8_mmi(src, src_stride, temp, 64, filter, x0_q4, x_step_q4, y0_q4,
y_step_q4, w, h);
vpx_convolve_avg_mmi(temp, 64, dst, dst_stride, NULL, 0, 0, 0, 0, w, h);
}