FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/x86/mpegvideoenc_qns_template.c
Date: 2024-07-24 19:24:46
Exec Total Coverage
Lines: 0 15 0.0%
Functions: 0 6 0.0%
Branches: 0 6 0.0%

Line Branch Exec Source
1 /*
2 * QNS functions are compiled 3 times for MMX/3DNOW/SSSE3
3 * Copyright (c) 2004 Michael Niedermayer
4 *
5 * MMX optimization by Michael Niedermayer <michaelni@gmx.at>
6 * 3DNow! and SSSE3 optimization by Zuxy Meng <zuxy.meng@gmail.com>
7 *
8 * This file is part of FFmpeg.
9 *
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 #include <stdint.h>
26
27 #include "libavutil/avassert.h"
28 #include "libavutil/common.h"
29 #include "libavutil/x86/asm.h"
30
31 #include "inline_asm.h"
32
33 #define MAX_ABS (512 >> (SCALE_OFFSET>0 ? SCALE_OFFSET : 0))
34
35 static int DEF(try_8x8basis)(const int16_t rem[64], const int16_t weight[64], const int16_t basis[64], int scale)
36 {
37 x86_reg i=0;
38
39 av_assert2(FFABS(scale) < MAX_ABS);
40 scale<<= 16 + SCALE_OFFSET - BASIS_SHIFT + RECON_SHIFT;
41
42 SET_RND(mm6);
43 __asm__ volatile(
44 "pxor %%mm7, %%mm7 \n\t"
45 "movd %4, %%mm5 \n\t"
46 "punpcklwd %%mm5, %%mm5 \n\t"
47 "punpcklwd %%mm5, %%mm5 \n\t"
48 ".p2align 4 \n\t"
49 "1: \n\t"
50 "movq (%1, %0), %%mm0 \n\t"
51 "movq 8(%1, %0), %%mm1 \n\t"
52 PMULHRW(%%mm0, %%mm1, %%mm5, %%mm6)
53 "paddw (%2, %0), %%mm0 \n\t"
54 "paddw 8(%2, %0), %%mm1 \n\t"
55 "psraw $6, %%mm0 \n\t"
56 "psraw $6, %%mm1 \n\t"
57 "pmullw (%3, %0), %%mm0 \n\t"
58 "pmullw 8(%3, %0), %%mm1 \n\t"
59 "pmaddwd %%mm0, %%mm0 \n\t"
60 "pmaddwd %%mm1, %%mm1 \n\t"
61 "paddd %%mm1, %%mm0 \n\t"
62 "psrld $4, %%mm0 \n\t"
63 "paddd %%mm0, %%mm7 \n\t"
64 "add $16, %0 \n\t"
65 "cmp $128, %0 \n\t" //FIXME optimize & bench
66 " jb 1b \n\t"
67 PHADDD(%%mm7, %%mm6)
68 "psrld $2, %%mm7 \n\t"
69 "movd %%mm7, %0 \n\t"
70
71 : "+r" (i)
72 : "r"(basis), "r"(rem), "r"(weight), "g"(scale)
73 );
74 return i;
75 }
76
77 static void DEF(add_8x8basis)(int16_t rem[64], const int16_t basis[64], int scale)
78 {
79 x86_reg i=0;
80
81 if(FFABS(scale) < MAX_ABS){
82 scale<<= 16 + SCALE_OFFSET - BASIS_SHIFT + RECON_SHIFT;
83 SET_RND(mm6);
84 __asm__ volatile(
85 "movd %3, %%mm5 \n\t"
86 "punpcklwd %%mm5, %%mm5 \n\t"
87 "punpcklwd %%mm5, %%mm5 \n\t"
88 ".p2align 4 \n\t"
89 "1: \n\t"
90 "movq (%1, %0), %%mm0 \n\t"
91 "movq 8(%1, %0), %%mm1 \n\t"
92 PMULHRW(%%mm0, %%mm1, %%mm5, %%mm6)
93 "paddw (%2, %0), %%mm0 \n\t"
94 "paddw 8(%2, %0), %%mm1 \n\t"
95 "movq %%mm0, (%2, %0) \n\t"
96 "movq %%mm1, 8(%2, %0) \n\t"
97 "add $16, %0 \n\t"
98 "cmp $128, %0 \n\t" // FIXME optimize & bench
99 " jb 1b \n\t"
100
101 : "+r" (i)
102 : "r"(basis), "r"(rem), "g"(scale)
103 );
104 }else{
105 for(i=0; i<8*8; i++){
106 rem[i] += (basis[i]*scale + (1<<(BASIS_SHIFT - RECON_SHIFT-1)))>>(BASIS_SHIFT - RECON_SHIFT);
107 }
108 }
109 }
110