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ebedd26eef
FFmpeg/libavcodec/mips/simple_idct_mmi.c
Jin Bo ebedd26eef libavcodec/mips: Fix specification of instruction name 
1.'xor,or,and' to 'pxor,por,pand'. In the case of operating FPR,
  gcc supports both of them, clang only supports the second type.
2.'dsrl,srl' to 'ssrld,ssrlw'. In the case of operating FPR, gcc
  supports both of them, clang only supports the second type.

Signed-off-by: Jin Bo <jinbo@loongson.cn>
Reviewed-by: yinshiyou-hf@loongson.cn
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2021-05-28 17:31:21 +02:00

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/*
* Loongson SIMD optimized simple idct
*
* Copyright (c) 2015 Loongson Technology Corporation Limited
* Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
* Zhang Shuangshuang <zhangshuangshuang@ict.ac.cn>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "idctdsp_mips.h"
#include "constants.h"
#include "libavutil/mips/asmdefs.h"
#include "libavutil/mips/mmiutils.h"
#include "libavutil/mem_internal.h"
#define W1 22725 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W2 21407 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W3 19266 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W4 16383 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W5 12873 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W6 8867 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define W7 4520 //cos(i*M_PI/16)*sqrt(2)*(1<<14) + 0.5
#define ROW_SHIFT 11
#define COL_SHIFT 20
#define DC_SHIFT 3
DECLARE_ALIGNED(16, const int16_t, W_arr)[46] = {
W4, W2, W4, W6,
W1, W3, W5, W7,
W4, W6, -W4, -W2,
W3, -W7, -W1, -W5,
W4, -W6, -W4, W2,
W5, -W1, W7, W3,
W4, -W2, W4, -W6,
W7, -W5, W3, -W1,
1024, 0, 1024, 0, //ff_p32_1024 = 0x0000040000000400ULL
0, -1, -1, -1, //mask = 0xffffffffffff0000ULL
32, 32, 32, 32 //ff_p16_32 = 0x0020002000200020ULL
};
void ff_simple_idct_8_mmi(int16_t *block)
{
BACKUP_REG
__asm__ volatile (
#define IDCT_ROW_COND_DC(src1, src2) \
"dmfc1 $11, "#src1" \n\t" \
"dmfc1 $12, "#src2" \n\t" \
"and $11, $11, $9 \n\t" \
"or $10, $11, $12 \n\t" \
"beqz $10, 1f \n\t" \
\
"punpcklhw $f30, "#src1", "#src2" \n\t" \
"punpckhhw $f31, "#src1", "#src2" \n\t" \
/* s6, s4, s2, s0 */ \
"punpcklhw "#src1", $f30, $f31 \n\t" \
/* s7, s5, s3, s1 */ \
"punpckhhw "#src2", $f30, $f31 \n\t" \
\
"pmaddhw $f30, "#src1", $f18 \n\t" \
"pmaddhw $f31, "#src2", $f19 \n\t" \
"paddw $f28, $f30, $f31 \n\t" \
"psubw $f29, $f30, $f31 \n\t" \
"punpcklwd $f30, $f28, $f29 \n\t" \
"punpckhwd $f31, $f28, $f29 \n\t" \
"paddw $f26, $f30, $f31 \n\t" \
"paddw $f26, $f26, $f16 \n\t" \
/* $f26: src[7], src[0] */ \
"psraw $f26, $f26, $f17 \n\t" \
\
"pmaddhw $f30, "#src1", $f20 \n\t" \
"pmaddhw $f31, "#src2", $f21 \n\t" \
"paddw $f28, $f30, $f31 \n\t" \
"psubw $f29, $f30, $f31 \n\t" \
"punpcklwd $f30, $f28, $f29 \n\t" \
"punpckhwd $f31, $f28, $f29 \n\t" \
"paddw $f27, $f30, $f31 \n\t" \
"paddw $f27, $f27, $f16 \n\t" \
/* $f27: src[6], src[1] */ \
"psraw $f27, $f27, $f17 \n\t" \
\
"pmaddhw $f30, "#src1", $f22 \n\t" \
"pmaddhw $f31, "#src2", $f23 \n\t" \
"paddw $f28, $f30, $f31 \n\t" \
"psubw $f29, $f30, $f31 \n\t" \
"punpcklwd $f30, $f28, $f29 \n\t" \
"punpckhwd $f31, $f28, $f29 \n\t" \
"paddw $f28, $f30, $f31 \n\t" \
"paddw $f28, $f28, $f16 \n\t" \
/* $f28: src[5], src[2] */ \
"psraw $f28, $f28, $f17 \n\t" \
\
"pmaddhw $f30, "#src1", $f24 \n\t" \
"pmaddhw $f31, "#src2", $f25 \n\t" \
"paddw "#src1", $f30, $f31 \n\t" \
"psubw "#src2", $f30, $f31 \n\t" \
"punpcklwd $f30, "#src1", "#src2" \n\t" \
"punpckhwd $f31, "#src1", "#src2" \n\t" \
"paddw $f29, $f30, $f31 \n\t" \
"paddw $f29, $f29, $f16 \n\t" \
/* $f29: src[4], src[3] */ \
"psraw $f29, $f29, $f17 \n\t" \
\
"punpcklhw "#src1", $f26, $f27 \n\t" \
"punpckhhw $f30, $f27, $f26 \n\t" \
"punpcklhw $f31, $f28, $f29 \n\t" \
"punpckhhw "#src2", $f29, $f28 \n\t" \
/* src[3], src[2], src[1], src[0] */ \
"punpcklwd "#src1", "#src1", $f31 \n\t" \
/* src[7], src[6], src[5], src[4] */ \
"punpcklwd "#src2", "#src2", $f30 \n\t" \
"j 2f \n\t" \
\
"1: \n\t" \
"li $10, 3 \n\t" \
"dmtc1 $10, $f30 \n\t" \
"psllh $f28, "#src1", $f30 \n\t" \
"dmtc1 $9, $f31 \n\t" \
"punpcklhw $f29, $f28, $f28 \n\t" \
"pand $f29, $f29, $f31 \n\t" \
"paddw $f28, $f28, $f29 \n\t" \
"punpcklwd "#src1", $f28, $f28 \n\t" \
"punpcklwd "#src2", $f28, $f28 \n\t" \
"2: \n\t" \
/* idctRowCondDC row0~8 */
/* load W */
"gslqc1 $f19, $f18, 0x00(%[w_arr]) \n\t"
"gslqc1 $f21, $f20, 0x10(%[w_arr]) \n\t"
"gslqc1 $f23, $f22, 0x20(%[w_arr]) \n\t"
"gslqc1 $f25, $f24, 0x30(%[w_arr]) \n\t"
"gslqc1 $f17, $f16, 0x40(%[w_arr]) \n\t"
/* load source in block */
"gslqc1 $f1, $f0, 0x00(%[block]) \n\t"
"gslqc1 $f3, $f2, 0x10(%[block]) \n\t"
"gslqc1 $f5, $f4, 0x20(%[block]) \n\t"
"gslqc1 $f7, $f6, 0x30(%[block]) \n\t"
"gslqc1 $f9, $f8, 0x40(%[block]) \n\t"
"gslqc1 $f11, $f10, 0x50(%[block]) \n\t"
"gslqc1 $f13, $f12, 0x60(%[block]) \n\t"
"gslqc1 $f15, $f14, 0x70(%[block]) \n\t"
/* $9: mask ; $f17: ROW_SHIFT */
"dmfc1 $9, $f17 \n\t"
"li $10, 11 \n\t"
"mtc1 $10, $f17 \n\t"
IDCT_ROW_COND_DC($f0,$f1)
IDCT_ROW_COND_DC($f2,$f3)
IDCT_ROW_COND_DC($f4,$f5)
IDCT_ROW_COND_DC($f6,$f7)
IDCT_ROW_COND_DC($f8,$f9)
IDCT_ROW_COND_DC($f10,$f11)
IDCT_ROW_COND_DC($f12,$f13)
IDCT_ROW_COND_DC($f14,$f15)
#define IDCT_COL_CASE1(src, out1, out2) \
"pmaddhw $f26, "#src", $f18 \n\t" \
"pmaddhw $f27, "#src", $f20 \n\t" \
"pmaddhw $f28, "#src", $f22 \n\t" \
"pmaddhw $f29, "#src", $f24 \n\t" \
\
"punpcklwd $f30, $f26, $f26 \n\t" \
"punpckhwd $f31, $f26, $f26 \n\t" \
/* $f26: src[0], src[56] */ \
"paddw $f26, $f30, $f31 \n\t" \
"punpcklwd $f30, $f27, $f27 \n\t" \
"punpckhwd $f31, $f27, $f27 \n\t" \
/* $f27: src[8], src[48] */ \
"paddw $f27, $f30, $f31 \n\t" \
"punpcklwd $f30, $f28, $f28 \n\t" \
"punpckhwd $f31, $f28, $f28 \n\t" \
/* $f28: src[16], src[40] */ \
"paddw $f28, $f30, $f31 \n\t" \
"punpcklwd $f30, $f29, $f29 \n\t" \
"punpckhwd $f31, $f29, $f29 \n\t" \
/* $f29: src[24], src[32] */ \
"paddw $f29, $f30, $f31 \n\t" \
\
/* out1: src[24], src[16], src[8], src[0] */ \
/* out2: src[56], src[48], src[40], src[32] */ \
"punpcklhw $f30, $f26, $f27 \n\t" \
"punpcklhw $f31, $f28, $f29 \n\t" \
"punpckhwd "#out1", $f30, $f31 \n\t" \
"psrah "#out1", "#out1", $f16 \n\t" \
"punpcklhw $f30, $f27, $f26 \n\t" \
"punpcklhw $f31, $f29, $f28 \n\t" \
"punpckhwd "#out2", $f31, $f30 \n\t" \
"psrah "#out2", "#out2", $f16 \n\t"
#define IDCT_COL_CASE2(src1, src2, out1, out2) \
"pmaddhw $f28, "#src1", $f18 \n\t" \
"pmaddhw $f29, "#src2", $f19 \n\t" \
"paddw $f30, $f28, $f29 \n\t" \
"psubw $f31, $f28, $f29 \n\t" \
"punpcklwd $f28, $f30, $f31 \n\t" \
"punpckhwd $f29, $f30, $f31 \n\t" \
"pmaddhw $f30, "#src1", $f20 \n\t" \
"pmaddhw $f31, "#src2", $f21 \n\t" \
/* $f26: src[0], src[56] */ \
"paddw $f26, $f28, $f29 \n\t" \
"paddw $f28, $f30, $f31 \n\t" \
"psubw $f29, $f30, $f31 \n\t" \
"punpcklwd $f30, $f28, $f29 \n\t" \
"punpckhwd $f31, $f28, $f29 \n\t" \
"pmaddhw $f28, "#src1", $f22 \n\t" \
"pmaddhw $f29, "#src2", $f23 \n\t" \
/* $f27: src[8], src[48] */ \
"paddw $f27, $f30, $f31 \n\t" \
"paddw $f30, $f28, $f29 \n\t" \
"psubw $f31, $f28, $f29 \n\t" \
"punpcklwd $f28, $f30, $f31 \n\t" \
"punpckhwd $f29, $f30, $f31 \n\t" \
"pmaddhw $f30, "#src1", $f24 \n\t" \
"pmaddhw $f31, "#src2", $f25 \n\t" \
/* $f28: src[16], src[40] */ \
"paddw $f28, $f28, $f29 \n\t" \
"paddw "#out1", $f30, $f31 \n\t" \
"psubw "#out2", $f30, $f31 \n\t" \
"punpcklwd $f30, "#out1", "#out2" \n\t" \
"punpckhwd $f31, "#out1", "#out2" \n\t" \
/* $f29: src[24], src[32] */ \
"paddw $f29, $f30, $f31 \n\t" \
\
/* out1: src[24], src[16], src[8], src[0] */ \
/* out2: src[56], src[48], src[40], src[32] */ \
"punpcklhw "#out1", $f26, $f27 \n\t" \
"punpckhhw "#out2", $f27, $f26 \n\t" \
"punpcklhw $f30, $f28, $f29 \n\t" \
"punpckhhw $f31, $f29, $f28 \n\t" \
"punpckhwd "#out1", "#out1", $f30 \n\t" \
"punpckhwd "#out2", $f31, "#out2" \n\t" \
"psrah "#out1", "#out1", $f16 \n\t" \
"psrah "#out2", "#out2", $f16 \n\t"
/* idctSparseCol col0~3 */
/* $f17: ff_p16_32; $f16: COL_SHIFT-16 */
"gsldlc1 $f17, 0x57(%[w_arr]) \n\t"
"gsldrc1 $f17, 0x50(%[w_arr]) \n\t"
"li $10, 4 \n\t"
"dmtc1 $10, $f16 \n\t"
"paddh $f0, $f0, $f17 \n\t"
/* Transpose row[0,2,4,6] */
"punpcklhw $f26, $f0, $f4 \n\t"
"punpckhhw $f27, $f0, $f4 \n\t"
"punpcklhw $f28, $f8, $f12 \n\t"
"punpckhhw $f29, $f8, $f12 \n\t"
"punpcklwd $f0, $f26, $f28 \n\t"
"punpckhwd $f4, $f26, $f28 \n\t"
"punpcklwd $f8, $f27, $f29 \n\t"
"punpckhwd $f12, $f27, $f29 \n\t"
"por $f26, $f2, $f6 \n\t"
"por $f26, $f26, $f10 \n\t"
"por $f26, $f26, $f14 \n\t"
"dmfc1 $10, $f26 \n\t"
"bnez $10, 1f \n\t"
/* case1: In this case, row[1,3,5,7] are all zero */
/* col0: $f0: col[24,16,8,0]; $f2: col[56,48,40,32] */
IDCT_COL_CASE1($f0, $f0, $f2)
/* col1: $f4: col[25,17,9,1]; $f6: col[57,49,41,33] */
IDCT_COL_CASE1($f4, $f4, $f6)
/* col2: $f8: col[26,18,10,2]; $f10: col[58,50,42,34] */
IDCT_COL_CASE1($f8, $f8, $f10)
/* col3: $f12: col[27,19,11,3]; $f14: col[59,51,43,35] */
IDCT_COL_CASE1($f12, $f12, $f14)
"j 2f \n\t"
"1: \n\t"
/* case2: row[1,3,5,7] are not all zero */
/* Transpose */
"punpcklhw $f26, $f2, $f6 \n\t"
"punpckhhw $f27, $f2, $f6 \n\t"
"punpcklhw $f28, $f10, $f14 \n\t"
"punpckhhw $f29, $f10, $f14 \n\t"
"punpcklwd $f2, $f26, $f28 \n\t"
"punpckhwd $f6, $f26, $f28 \n\t"
"punpcklwd $f10, $f27, $f29 \n\t"
"punpckhwd $f14, $f27, $f29 \n\t"
/* col0: $f0: col[24,16,8,0]; $f2: col[56,48,40,32] */
IDCT_COL_CASE2($f0, $f2, $f0, $f2)
/* col1: $f4: col[25,17,9,1]; $f6: col[57,49,41,33] */
IDCT_COL_CASE2($f4, $f6, $f4, $f6)
/* col2: $f8: col[26,18,10,2]; $f10: col[58,50,42,34] */
IDCT_COL_CASE2($f8, $f10, $f8, $f10)
/* col3: $f12: col[27,19,11,3]; $f14: col[59,51,43,35] */
IDCT_COL_CASE2($f12, $f14, $f12, $f14)
"2: \n\t"
/* Transpose */
"punpcklhw $f26, $f0, $f4 \n\t"
"punpckhhw $f27, $f0, $f4 \n\t"
"punpcklhw $f28, $f8, $f12 \n\t"
"punpckhhw $f29, $f8, $f12 \n\t"
"punpcklwd $f0, $f26, $f28 \n\t"
"punpckhwd $f4, $f26, $f28 \n\t"
"punpcklwd $f8, $f27, $f29 \n\t"
"punpckhwd $f12, $f27, $f29 \n\t"
/* Transpose */
"punpcklhw $f26, $f2, $f6 \n\t"
"punpckhhw $f27, $f2, $f6 \n\t"
"punpcklhw $f28, $f10, $f14 \n\t"
"punpckhhw $f29, $f10, $f14 \n\t"
"punpcklwd $f2, $f26, $f28 \n\t"
"punpckhwd $f6, $f26, $f28 \n\t"
"punpcklwd $f10, $f27, $f29 \n\t"
"punpckhwd $f14, $f27, $f29 \n\t"
/* idctSparseCol col4~7 */
"paddh $f1, $f1, $f17 \n\t"
/* Transpose */
"punpcklhw $f26, $f1, $f5 \n\t"
"punpckhhw $f27, $f1, $f5 \n\t"
"punpcklhw $f28, $f9, $f13 \n\t"
"punpckhhw $f29, $f9, $f13 \n\t"
"punpcklwd $f1, $f26, $f28 \n\t"
"punpckhwd $f5, $f26, $f28 \n\t"
"punpcklwd $f9, $f27, $f29 \n\t"
"punpckhwd $f13, $f27, $f29 \n\t"
"por $f26, $f3, $f7 \n\t"
"por $f26, $f26, $f11 \n\t"
"por $f26, $f26, $f15 \n\t"
"dmfc1 $10, $f26 \n\t"
"bnez $10, 1f \n\t"
/* case1: In this case, row[1,3,5,7] are all zero */
/* col4: $f1: col[24,16,8,0]; $f3: col[56,48,40,32] */
IDCT_COL_CASE1($f1, $f1, $f3)
/* col5: $f5: col[25,17,9,1]; $f7: col[57,49,41,33] */
IDCT_COL_CASE1($f5, $f5, $f7)
/* col6: $f9: col[26,18,10,2]; $f11: col[58,50,42,34] */
IDCT_COL_CASE1($f9, $f9, $f11)
/* col7: $f13: col[27,19,11,3]; $f15: col[59,51,43,35] */
IDCT_COL_CASE1($f13, $f13, $f15)
"j 2f \n\t"
"1: \n\t"
/* case2: row[1,3,5,7] are not all zero */
/* Transpose */
"punpcklhw $f26, $f3, $f7 \n\t"
"punpckhhw $f27, $f3, $f7 \n\t"
"punpcklhw $f28, $f11, $f15 \n\t"
"punpckhhw $f29, $f11, $f15 \n\t"
"punpcklwd $f3, $f26, $f28 \n\t"
"punpckhwd $f7, $f26, $f28 \n\t"
"punpcklwd $f11, $f27, $f29 \n\t"
"punpckhwd $f15, $f27, $f29 \n\t"
/* col4: $f1: col[24,16,8,0]; $f3: col[56,48,40,32] */
IDCT_COL_CASE2($f1, $f3, $f1, $f3)
/* col5: $f5: col[25,17,9,1]; $f7: col[57,49,41,33] */
IDCT_COL_CASE2($f5, $f7, $f5, $f7)
/* col6: $f9: col[26,18,10,2]; $f11: col[58,50,42,34] */
IDCT_COL_CASE2($f9, $f11, $f9, $f11)
/* col7: $f13: col[27,19,11,3]; $f15: col[59,51,43,35] */
IDCT_COL_CASE2($f13, $f15, $f13, $f15)
"2: \n\t"
/* Transpose */
"punpcklhw $f26, $f1, $f5 \n\t"
"punpckhhw $f27, $f1, $f5 \n\t"
"punpcklhw $f28, $f9, $f13 \n\t"
"punpckhhw $f29, $f9, $f13 \n\t"
"punpcklwd $f1, $f26, $f28 \n\t"
"punpckhwd $f5, $f26, $f28 \n\t"
"punpcklwd $f9, $f27, $f29 \n\t"
"punpckhwd $f13, $f27, $f29 \n\t"
/* Transpose */
"punpcklhw $f26, $f3, $f7 \n\t"
"punpckhhw $f27, $f3, $f7 \n\t"
"punpcklhw $f28, $f11, $f15 \n\t"
"punpckhhw $f29, $f11, $f15 \n\t"
"punpcklwd $f3, $f26, $f28 \n\t"
"punpckhwd $f7, $f26, $f28 \n\t"
"punpcklwd $f11, $f27, $f29 \n\t"
"punpckhwd $f15, $f27, $f29 \n\t"
/* Store */
"gssqc1 $f1, $f0, 0x00(%[block]) \n\t"
"gssqc1 $f5, $f4, 0x10(%[block]) \n\t"
"gssqc1 $f9, $f8, 0x20(%[block]) \n\t"
"gssqc1 $f13, $f12, 0x30(%[block]) \n\t"
"gssqc1 $f3, $f2, 0x40(%[block]) \n\t"
"gssqc1 $f7, $f6, 0x50(%[block]) \n\t"
"gssqc1 $f11, $f10, 0x60(%[block]) \n\t"
"gssqc1 $f15, $f14, 0x70(%[block]) \n\t"
: [block]"+&r"(block)
: [w_arr]"r"(W_arr)
: "memory"
);
RECOVER_REG
}
void ff_simple_idct_put_8_mmi(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
{
ff_simple_idct_8_mmi(block);
ff_put_pixels_clamped_mmi(block, dest, line_size);
}
void ff_simple_idct_add_8_mmi(uint8_t *dest, ptrdiff_t line_size, int16_t *block)
{
ff_simple_idct_8_mmi(block);
ff_add_pixels_clamped_mmi(block, dest, line_size);
}
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